Merging upstream version 1.70.0+dfsg1.

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

176 files changed, 7375 insertions, 0 deletions

diff --git a/vendor/basic-toml/.cargo-checksum.json b/vendor/basic-toml/.cargo-checksum.json
new file mode 100644
index 000000000..f875b19ff
--- /dev/null
+++ b/vendor/basic-toml/.cargo-checksum.json
@@ -0,0 +1 @@
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new file mode 100644
index 000000000..e30127d7d
--- /dev/null
+++ b/vendor/basic-toml/Cargo.lock
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new file mode 100644
index 000000000..df64feadb
--- /dev/null
+++ b/vendor/basic-toml/Cargo.toml
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+# THIS FILE IS AUTOMATICALLY GENERATED BY CARGO
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+# When uploading crates to the registry Cargo will automatically
+# "normalize" Cargo.toml files for maximal compatibility
+# with all versions of Cargo and also rewrite `path` dependencies
+# to registry (e.g., crates.io) dependencies.
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+# If you are reading this file be aware that the original Cargo.toml
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+authors = [
+    "Alex Crichton <alex@alexcrichton.com>",
+    "David Tolnay <dtolnay@gmail.com>",
+]
+description = "Minimal TOML library with few dependencies"
+documentation = "https://docs.rs/basic-toml"
+readme = "README.md"
+keywords = [
+    "toml",
+    "serde",
+]
+categories = [
+    "config",
+    "encoding",
+    "parser-implementations",
+]
+license = "MIT OR Apache-2.0"
+repository = "https://github.com/dtolnay/basic-toml"
+
+[package.metadata.docs.rs]
+targets = ["x86_64-unknown-linux-gnu"]
+
+[lib]
+doc-scrape-examples = false
+
+[dependencies.serde]
+version = "1.0.97"
+
+[dev-dependencies.semver]
+version = "1.0"
+features = ["serde"]
+
+[dev-dependencies.serde]
+version = "1.0"
+features = ["derive"]
+
+[dev-dependencies.serde_derive]
+version = "1.0"
+
+[dev-dependencies.serde_json]
+version = "1.0"
diff --git a/vendor/basic-toml/LICENSE-APACHE b/vendor/basic-toml/LICENSE-APACHE
new file mode 100644
index 000000000..1b5ec8b78
--- /dev/null
+++ b/vendor/basic-toml/LICENSE-APACHE
@@ -0,0 +1,176 @@
+                              Apache License
+                        Version 2.0, January 2004
+                     http://www.apache.org/licenses/
+
+TERMS AND CONDITIONS FOR USE, REPRODUCTION, AND DISTRIBUTION
+
+1. Definitions.
+
+   "License" shall mean the terms and conditions for use, reproduction,
+   and distribution as defined by Sections 1 through 9 of this document.
+
+   "Licensor" shall mean the copyright owner or entity authorized by
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+
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+   direction or management of such entity, whether by contract or
+   otherwise, or (ii) ownership of fifty percent (50%) or more of the
+   outstanding shares, or (iii) beneficial ownership of such entity.
+
+   "You" (or "Your") shall mean an individual or Legal Entity
+   exercising permissions granted by this License.
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+   including but not limited to software source code, documentation
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+
+   "Work" shall mean the work of authorship, whether in Source or
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+   copyright notice that is included in or attached to the work
+   (an example is provided in the Appendix below).
+
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+   editorial revisions, annotations, elaborations, or other modifications
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+   on behalf of whom a Contribution has been received by Licensor and
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+2. Grant of Copyright License. Subject to the terms and conditions of
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+
+   You may add Your own copyright statement to Your modifications and
+   may provide additional or different license terms and conditions
+   for use, reproduction, or distribution of Your modifications, or
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+   the conditions stated in this License.
+
+5. Submission of Contributions. Unless You explicitly state otherwise,
+   any Contribution intentionally submitted for inclusion in the Work
+   by You to the Licensor shall be under the terms and conditions of
+   this License, without any additional terms or conditions.
+   Notwithstanding the above, nothing herein shall supersede or modify
+   the terms of any separate license agreement you may have executed
+   with Licensor regarding such Contributions.
+
+6. Trademarks. This License does not grant permission to use the trade
+   names, trademarks, service marks, or product names of the Licensor,
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+   origin of the Work and reproducing the content of the NOTICE file.
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+7. Disclaimer of Warranty. Unless required by applicable law or
+   agreed to in writing, Licensor provides the Work (and each
+   Contributor provides its Contributions) on an "AS IS" BASIS,
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+   PARTICULAR PURPOSE. You are solely responsible for determining the
+   appropriateness of using or redistributing the Work and assume any
+   risks associated with Your exercise of permissions under this License.
+
+8. Limitation of Liability. In no event and under no legal theory,
+   whether in tort (including negligence), contract, or otherwise,
+   unless required by applicable law (such as deliberate and grossly
+   negligent acts) or agreed to in writing, shall any Contributor be
+   liable to You for damages, including any direct, indirect, special,
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+   of your accepting any such warranty or additional liability.
+
+END OF TERMS AND CONDITIONS
diff --git a/vendor/basic-toml/LICENSE-MIT b/vendor/basic-toml/LICENSE-MIT
new file mode 100644
index 000000000..31aa79387
--- /dev/null
+++ b/vendor/basic-toml/LICENSE-MIT
@@ -0,0 +1,23 @@
+Permission is hereby granted, free of charge, to any
+person obtaining a copy of this software and associated
+documentation files (the "Software"), to deal in the
+Software without restriction, including without
+limitation the rights to use, copy, modify, merge,
+publish, distribute, sublicense, and/or sell copies of
+the Software, and to permit persons to whom the Software
+is furnished to do so, subject to the following
+conditions:
+
+The above copyright notice and this permission notice
+shall be included in all copies or substantial portions
+of the Software.
+
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF
+ANY KIND, EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED
+TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A
+PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT
+SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY
+CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
+OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR
+IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
+DEALINGS IN THE SOFTWARE.
diff --git a/vendor/basic-toml/README.md b/vendor/basic-toml/README.md
new file mode 100644
index 000000000..c76fa400f
--- /dev/null
+++ b/vendor/basic-toml/README.md
@@ -0,0 +1,36 @@
+# basic-toml
+
+[<img alt="github" src="https://img.shields.io/badge/github-dtolnay/basic--toml-8da0cb?style=for-the-badge&labelColor=555555&logo=github" height="20">](https://github.com/dtolnay/basic-toml)
+[<img alt="crates.io" src="https://img.shields.io/crates/v/basic-toml.svg?style=for-the-badge&color=fc8d62&logo=rust" height="20">](https://crates.io/crates/basic-toml)
+[<img alt="docs.rs" src="https://img.shields.io/badge/docs.rs-basic--toml-66c2a5?style=for-the-badge&labelColor=555555&logo=docs.rs" height="20">](https://docs.rs/basic-toml)
+[<img alt="build status" src="https://img.shields.io/github/actions/workflow/status/dtolnay/basic-toml/ci.yml?branch=master&style=for-the-badge" height="20">](https://github.com/dtolnay/basic-toml/actions?query=branch%3Amaster)
+
+A library for parsing and producing data in [TOML] format using [Serde].
+
+This crate is a stripped down fork of version 0.5 of the `toml` crate (from
+before the `toml_edit` rewrite).
+
+[TOML]: https://toml.io
+[Serde]: https://serde.rs
+
+```toml
+[dependencies]
+basic-toml = "0.1"
+```
+
+<br>
+
+#### License
+
+<sup>
+Licensed under either of <a href="LICENSE-APACHE">Apache License, Version
+2.0</a> or <a href="LICENSE-MIT">MIT license</a> at your option.
+</sup>
+
+<br>
+
+<sub>
+Unless you explicitly state otherwise, any contribution intentionally submitted
+for inclusion in this crate by you, as defined in the Apache-2.0 license, shall
+be dual licensed as above, without any additional terms or conditions.
+</sub>
diff --git a/vendor/basic-toml/examples/decode.rs b/vendor/basic-toml/examples/decode.rs
new file mode 100644
index 000000000..21e438294
--- /dev/null
+++ b/vendor/basic-toml/examples/decode.rs
@@ -0,0 +1,54 @@
+//! An example showing off the usage of `Deserialize` to automatically decode
+//! TOML into a Rust `struct`
+
+#![deny(warnings)]
+#![allow(dead_code)]
+
+use serde_derive::Deserialize;
+
+/// This is what we're going to decode into. Each field is optional, meaning
+/// that it doesn't have to be present in TOML.
+#[derive(Debug, Deserialize)]
+struct Config {
+    global_string: Option<String>,
+    global_integer: Option<u64>,
+    server: Option<ServerConfig>,
+    peers: Option<Vec<PeerConfig>>,
+}
+
+/// Sub-structs are decoded from tables, so this will decode from the `[server]`
+/// table.
+///
+/// Again, each field is optional, meaning they don't have to be present.
+#[derive(Debug, Deserialize)]
+struct ServerConfig {
+    ip: Option<String>,
+    port: Option<u64>,
+}
+
+#[derive(Debug, Deserialize)]
+struct PeerConfig {
+    ip: Option<String>,
+    port: Option<u64>,
+}
+
+fn main() {
+    let toml_str = r#"
+        global_string = "test"
+        global_integer = 5
+
+        [server]
+        ip = "127.0.0.1"
+        port = 80
+
+        [[peers]]
+        ip = "127.0.0.1"
+        port = 8080
+
+        [[peers]]
+        ip = "127.0.0.1"
+    "#;
+
+    let decoded: Config = basic_toml::from_str(toml_str).unwrap();
+    println!("{:#?}", decoded);
+}
diff --git a/vendor/basic-toml/src/de.rs b/vendor/basic-toml/src/de.rs
new file mode 100644
index 000000000..21531f565
--- /dev/null
+++ b/vendor/basic-toml/src/de.rs
@@ -0,0 +1,1723 @@
+use crate::tokens::{Error as TokenError, Span, Token, Tokenizer};
+use serde::de;
+use serde::de::IntoDeserializer;
+use std::borrow::Cow;
+use std::collections::{HashMap, HashSet};
+use std::error;
+use std::f64;
+use std::fmt::{self, Display};
+use std::iter;
+use std::str;
+use std::vec;
+
+type TablePair<'a> = ((Span, Cow<'a, str>), Value<'a>);
+
+/// Deserializes a byte slice into a type.
+///
+/// This function will attempt to interpret `bytes` as UTF-8 data and then
+/// deserialize `T` from the TOML document provided.
+pub fn from_slice<'de, T>(bytes: &'de [u8]) -> Result<T, crate::Error>
+where
+    T: de::Deserialize<'de>,
+{
+    match str::from_utf8(bytes) {
+        Ok(s) => from_str(s),
+        Err(e) => Err(crate::Error::from(*Error::custom(None, e.to_string()))),
+    }
+}
+
+/// Deserializes a string into a type.
+///
+/// This function will attempt to interpret `s` as a TOML document and
+/// deserialize `T` from the document.
+pub fn from_str<'de, T>(s: &'de str) -> Result<T, crate::Error>
+where
+    T: de::Deserialize<'de>,
+{
+    let mut d = Deserializer::new(s);
+    T::deserialize(&mut d).map_err(|e| crate::Error::from(*e))
+}
+
+#[derive(Debug)]
+pub(crate) struct Error {
+    kind: ErrorKind,
+    line: Option<usize>,
+    col: usize,
+    at: Option<usize>,
+    message: String,
+    key: Vec<String>,
+}
+
+/// Errors that can occur when deserializing a type.
+#[derive(Debug)]
+enum ErrorKind {
+    /// EOF was reached when looking for a value.
+    UnexpectedEof,
+
+    /// An invalid character not allowed in a string was found.
+    InvalidCharInString(char),
+
+    /// An invalid character was found as an escape.
+    InvalidEscape(char),
+
+    /// An invalid character was found in a hex escape.
+    InvalidHexEscape(char),
+
+    /// An invalid escape value was specified in a hex escape in a string.
+    ///
+    /// Valid values are in the plane of unicode codepoints.
+    InvalidEscapeValue(u32),
+
+    /// A newline in a string was encountered when one was not allowed.
+    NewlineInString,
+
+    /// An unexpected character was encountered, typically when looking for a
+    /// value.
+    Unexpected(char),
+
+    /// An unterminated string was found where EOF was found before the ending
+    /// EOF mark.
+    UnterminatedString,
+
+    /// A newline was found in a table key.
+    NewlineInTableKey,
+
+    /// A number failed to parse.
+    NumberInvalid,
+
+    /// Wanted one sort of token, but found another.
+    Wanted {
+        /// Expected token type.
+        expected: &'static str,
+        /// Actually found token type.
+        found: &'static str,
+    },
+
+    /// A duplicate table definition was found.
+    DuplicateTable(String),
+
+    /// Duplicate key in table.
+    DuplicateKey(String),
+
+    /// A previously defined table was redefined as an array.
+    RedefineAsArray,
+
+    /// Multiline strings are not allowed for key.
+    MultilineStringKey,
+
+    /// A custom error which could be generated when deserializing a particular
+    /// type.
+    Custom,
+
+    /// A tuple with a certain number of elements was expected but something
+    /// else was found.
+    ExpectedTuple(usize),
+
+    /// Expected table keys to be in increasing tuple index order, but something
+    /// else was found.
+    ExpectedTupleIndex {
+        /// Expected index.
+        expected: usize,
+        /// Key that was specified.
+        found: String,
+    },
+
+    /// An empty table was expected but entries were found.
+    ExpectedEmptyTable,
+
+    /// Dotted key attempted to extend something that is not a table.
+    DottedKeyInvalidType,
+
+    /// An unexpected key was encountered.
+    ///
+    /// Used when deserializing a struct with a limited set of fields.
+    UnexpectedKeys {
+        /// The unexpected keys.
+        keys: Vec<String>,
+        /// Keys that may be specified.
+        available: &'static [&'static str],
+    },
+
+    /// Unquoted string was found when quoted one was expected.
+    UnquotedString,
+}
+
+struct Deserializer<'a> {
+    input: &'a str,
+    tokens: Tokenizer<'a>,
+}
+
+impl<'de, 'b> de::Deserializer<'de> for &'b mut Deserializer<'de> {
+    type Error = Box<Error>;
+
+    fn deserialize_any<V>(self, visitor: V) -> Result<V::Value, Box<Error>>
+    where
+        V: de::Visitor<'de>,
+    {
+        let mut tables = self.tables()?;
+        let table_indices = build_table_indices(&tables);
+        let table_pindices = build_table_pindices(&tables);
+
+        let res = visitor.visit_map(MapVisitor {
+            values: Vec::new().into_iter().peekable(),
+            next_value: None,
+            depth: 0,
+            cur: 0,
+            cur_parent: 0,
+            max: tables.len(),
+            table_indices: &table_indices,
+            table_pindices: &table_pindices,
+            tables: &mut tables,
+            array: false,
+            de: self,
+            keys: HashSet::new(),
+        });
+        res.map_err(|mut err| {
+            // Errors originating from this library (toml), have an offset
+            // attached to them already. Other errors, like those originating
+            // from serde (like "missing field") or from a custom deserializer,
+            // do not have offsets on them. Here, we do a best guess at their
+            // location, by attributing them to the "current table" (the last
+            // item in `tables`).
+            err.fix_offset(|| tables.last().map(|table| table.at));
+            err.fix_linecol(|at| self.to_linecol(at));
+            err
+        })
+    }
+
+    serde::forward_to_deserialize_any! {
+        bool u8 u16 u32 u64 i8 i16 i32 i64 f32 f64 char str string seq
+        bytes byte_buf map unit newtype_struct
+        ignored_any unit_struct tuple_struct tuple option identifier struct enum
+    }
+}
+
+// Builds a datastructure that allows for efficient sublinear lookups. The
+// returned HashMap contains a mapping from table header (like [a.b.c]) to list
+// of tables with that precise name. The tables are being identified by their
+// index in the passed slice. We use a list as the implementation uses this data
+// structure for arrays as well as tables, so if any top level [[name]] array
+// contains multiple entries, there are multiple entries in the list. The lookup
+// is performed in the `SeqAccess` implementation of `MapVisitor`. The lists are
+// ordered, which we exploit in the search code by using bisection.
+fn build_table_indices<'de>(tables: &[Table<'de>]) -> HashMap<Vec<Cow<'de, str>>, Vec<usize>> {
+    let mut res = HashMap::new();
+    for (i, table) in tables.iter().enumerate() {
+        let header = table.header.iter().map(|v| v.1.clone()).collect::<Vec<_>>();
+        res.entry(header).or_insert_with(Vec::new).push(i);
+    }
+    res
+}
+
+// Builds a datastructure that allows for efficient sublinear lookups. The
+// returned HashMap contains a mapping from table header (like [a.b.c]) to list
+// of tables whose name at least starts with the specified name. So searching
+// for [a.b] would give both [a.b.c.d] as well as [a.b.e]. The tables are being
+// identified by their index in the passed slice.
+//
+// A list is used for two reasons: First, the implementation also stores arrays
+// in the same data structure and any top level array of size 2 or greater
+// creates multiple entries in the list with the same shared name. Second, there
+// can be multiple tables sharing the same prefix.
+//
+// The lookup is performed in the `MapAccess` implementation of `MapVisitor`.
+// The lists are ordered, which we exploit in the search code by using
+// bisection.
+fn build_table_pindices<'de>(tables: &[Table<'de>]) -> HashMap<Vec<Cow<'de, str>>, Vec<usize>> {
+    let mut res = HashMap::new();
+    for (i, table) in tables.iter().enumerate() {
+        let header = table.header.iter().map(|v| v.1.clone()).collect::<Vec<_>>();
+        for len in 0..=header.len() {
+            res.entry(header[..len].to_owned())
+                .or_insert_with(Vec::new)
+                .push(i);
+        }
+    }
+    res
+}
+
+fn headers_equal(hdr_a: &[(Span, Cow<str>)], hdr_b: &[(Span, Cow<str>)]) -> bool {
+    if hdr_a.len() != hdr_b.len() {
+        return false;
+    }
+    hdr_a.iter().zip(hdr_b.iter()).all(|(h1, h2)| h1.1 == h2.1)
+}
+
+struct Table<'a> {
+    at: usize,
+    header: Vec<(Span, Cow<'a, str>)>,
+    values: Option<Vec<TablePair<'a>>>,
+    array: bool,
+}
+
+struct MapVisitor<'de, 'b> {
+    values: iter::Peekable<vec::IntoIter<TablePair<'de>>>,
+    next_value: Option<TablePair<'de>>,
+    depth: usize,
+    cur: usize,
+    cur_parent: usize,
+    max: usize,
+    table_indices: &'b HashMap<Vec<Cow<'de, str>>, Vec<usize>>,
+    table_pindices: &'b HashMap<Vec<Cow<'de, str>>, Vec<usize>>,
+    tables: &'b mut [Table<'de>],
+    array: bool,
+    de: &'b mut Deserializer<'de>,
+    keys: HashSet<Cow<'de, str>>,
+}
+
+impl<'de, 'b> de::MapAccess<'de> for MapVisitor<'de, 'b> {
+    type Error = Box<Error>;
+
+    fn next_key_seed<K>(&mut self, seed: K) -> Result<Option<K::Value>, Box<Error>>
+    where
+        K: de::DeserializeSeed<'de>,
+    {
+        if self.cur_parent == self.max || self.cur == self.max {
+            return Ok(None);
+        }
+
+        loop {
+            assert!(self.next_value.is_none());
+            if let Some(((span, key), value)) = self.values.next() {
+                if !self.keys.insert(key.clone()) {
+                    return Err(Error::from_kind(
+                        Some(span.start),
+                        ErrorKind::DuplicateKey(key.into_owned()),
+                    ));
+                }
+                let ret = seed.deserialize(StrDeserializer::new(key.clone()))?;
+                self.next_value = Some(((span, key), value));
+                return Ok(Some(ret));
+            }
+
+            let next_table = {
+                let prefix_stripped = self.tables[self.cur_parent].header[..self.depth]
+                    .iter()
+                    .map(|v| v.1.clone())
+                    .collect::<Vec<_>>();
+                self.table_pindices
+                    .get(&prefix_stripped)
+                    .and_then(|entries| {
+                        let start = entries.binary_search(&self.cur).unwrap_or_else(|v| v);
+                        if start == entries.len() || entries[start] < self.cur {
+                            return None;
+                        }
+                        entries[start..]
+                            .iter()
+                            .filter_map(|i| if *i < self.max { Some(*i) } else { None })
+                            .map(|i| (i, &self.tables[i]))
+                            .find(|(_, table)| table.values.is_some())
+                            .map(|p| p.0)
+                    })
+            };
+
+            let pos = match next_table {
+                Some(pos) => pos,
+                None => return Ok(None),
+            };
+            self.cur = pos;
+
+            // Test to see if we're duplicating our parent's table, and if so
+            // then this is an error in the toml format
+            if self.cur_parent != pos {
+                if headers_equal(
+                    &self.tables[self.cur_parent].header,
+                    &self.tables[pos].header,
+                ) {
+                    let at = self.tables[pos].at;
+                    let name = self.tables[pos]
+                        .header
+                        .iter()
+                        .map(|k| k.1.clone())
+                        .collect::<Vec<_>>()
+                        .join(".");
+                    return Err(self.de.error(at, ErrorKind::DuplicateTable(name)));
+                }
+
+                // If we're here we know we should share the same prefix, and if
+                // the longer table was defined first then we want to narrow
+                // down our parent's length if possible to ensure that we catch
+                // duplicate tables defined afterwards.
+                let parent_len = self.tables[self.cur_parent].header.len();
+                let cur_len = self.tables[pos].header.len();
+                if cur_len < parent_len {
+                    self.cur_parent = pos;
+                }
+            }
+
+            let table = &mut self.tables[pos];
+
+            // If we're not yet at the appropriate depth for this table then we
+            // just next the next portion of its header and then continue
+            // decoding.
+            if self.depth != table.header.len() {
+                let (span, key) = &table.header[self.depth];
+                if !self.keys.insert(key.clone()) {
+                    return Err(Error::from_kind(
+                        Some(span.start),
+                        ErrorKind::DuplicateKey(key.clone().into_owned()),
+                    ));
+                }
+                let key = seed.deserialize(StrDeserializer::new(key.clone()))?;
+                return Ok(Some(key));
+            }
+
+            // Rule out cases like:
+            //
+            //      [[foo.bar]]
+            //      [[foo]]
+            if table.array {
+                let kind = ErrorKind::RedefineAsArray;
+                return Err(self.de.error(table.at, kind));
+            }
+
+            self.values = table
+                .values
+                .take()
+                .expect("Unable to read table values")
+                .into_iter()
+                .peekable();
+        }
+    }
+
+    fn next_value_seed<V>(&mut self, seed: V) -> Result<V::Value, Box<Error>>
+    where
+        V: de::DeserializeSeed<'de>,
+    {
+        if let Some((k, v)) = self.next_value.take() {
+            match seed.deserialize(ValueDeserializer::new(v)) {
+                Ok(v) => return Ok(v),
+                Err(mut e) => {
+                    e.add_key_context(&k.1);
+                    return Err(e);
+                }
+            }
+        }
+
+        let array =
+            self.tables[self.cur].array && self.depth == self.tables[self.cur].header.len() - 1;
+        self.cur += 1;
+        let res = seed.deserialize(MapVisitor {
+            values: Vec::new().into_iter().peekable(),
+            next_value: None,
+            depth: self.depth + if array { 0 } else { 1 },
+            cur_parent: self.cur - 1,
+            cur: 0,
+            max: self.max,
+            array,
+            table_indices: self.table_indices,
+            table_pindices: self.table_pindices,
+            tables: &mut *self.tables,
+            de: &mut *self.de,
+            keys: HashSet::new(),
+        });
+        res.map_err(|mut e| {
+            e.add_key_context(&self.tables[self.cur - 1].header[self.depth].1);
+            e
+        })
+    }
+}
+
+impl<'de, 'b> de::SeqAccess<'de> for MapVisitor<'de, 'b> {
+    type Error = Box<Error>;
+
+    fn next_element_seed<K>(&mut self, seed: K) -> Result<Option<K::Value>, Box<Error>>
+    where
+        K: de::DeserializeSeed<'de>,
+    {
+        assert!(self.next_value.is_none());
+        assert!(self.values.next().is_none());
+
+        if self.cur_parent == self.max {
+            return Ok(None);
+        }
+
+        let header_stripped = self.tables[self.cur_parent]
+            .header
+            .iter()
+            .map(|v| v.1.clone())
+            .collect::<Vec<_>>();
+        let start_idx = self.cur_parent + 1;
+        let next = self
+            .table_indices
+            .get(&header_stripped)
+            .and_then(|entries| {
+                let start = entries.binary_search(&start_idx).unwrap_or_else(|v| v);
+                if start == entries.len() || entries[start] < start_idx {
+                    return None;
+                }
+                entries[start..]
+                    .iter()
+                    .filter_map(|i| if *i < self.max { Some(*i) } else { None })
+                    .map(|i| (i, &self.tables[i]))
+                    .find(|(_, table)| table.array)
+                    .map(|p| p.0)
+            })
+            .unwrap_or(self.max);
+
+        let ret = seed.deserialize(MapVisitor {
+            values: self.tables[self.cur_parent]
+                .values
+                .take()
+                .expect("Unable to read table values")
+                .into_iter()
+                .peekable(),
+            next_value: None,
+            depth: self.depth + 1,
+            cur_parent: self.cur_parent,
+            max: next,
+            cur: 0,
+            array: false,
+            table_indices: self.table_indices,
+            table_pindices: self.table_pindices,
+            tables: self.tables,
+            de: self.de,
+            keys: HashSet::new(),
+        })?;
+        self.cur_parent = next;
+        Ok(Some(ret))
+    }
+}
+
+impl<'de, 'b> de::Deserializer<'de> for MapVisitor<'de, 'b> {
+    type Error = Box<Error>;
+
+    fn deserialize_any<V>(self, visitor: V) -> Result<V::Value, Box<Error>>
+    where
+        V: de::Visitor<'de>,
+    {
+        if self.array {
+            visitor.visit_seq(self)
+        } else {
+            visitor.visit_map(self)
+        }
+    }
+
+    // `None` is interpreted as a missing field so be sure to implement `Some`
+    // as a present field.
+    fn deserialize_option<V>(self, visitor: V) -> Result<V::Value, Box<Error>>
+    where
+        V: de::Visitor<'de>,
+    {
+        visitor.visit_some(self)
+    }
+
+    fn deserialize_newtype_struct<V>(
+        self,
+        _name: &'static str,
+        visitor: V,
+    ) -> Result<V::Value, Box<Error>>
+    where
+        V: de::Visitor<'de>,
+    {
+        visitor.visit_newtype_struct(self)
+    }
+
+    serde::forward_to_deserialize_any! {
+        bool u8 u16 u32 u64 i8 i16 i32 i64 f32 f64 char str string seq
+        bytes byte_buf map unit identifier
+        ignored_any unit_struct tuple_struct tuple struct enum
+    }
+}
+
+struct StrDeserializer<'a> {
+    key: Cow<'a, str>,
+}
+
+impl<'a> StrDeserializer<'a> {
+    fn new(key: Cow<'a, str>) -> StrDeserializer<'a> {
+        StrDeserializer { key }
+    }
+}
+
+impl<'a> de::IntoDeserializer<'a, Box<Error>> for StrDeserializer<'a> {
+    type Deserializer = Self;
+
+    fn into_deserializer(self) -> Self::Deserializer {
+        self
+    }
+}
+
+impl<'de> de::Deserializer<'de> for StrDeserializer<'de> {
+    type Error = Box<Error>;
+
+    fn deserialize_any<V>(self, visitor: V) -> Result<V::Value, Box<Error>>
+    where
+        V: de::Visitor<'de>,
+    {
+        match self.key {
+            Cow::Borrowed(s) => visitor.visit_borrowed_str(s),
+            Cow::Owned(s) => visitor.visit_string(s),
+        }
+    }
+
+    serde::forward_to_deserialize_any! {
+        bool u8 u16 u32 u64 i8 i16 i32 i64 f32 f64 char str string seq
+        bytes byte_buf map option unit newtype_struct
+        ignored_any unit_struct tuple_struct tuple enum identifier struct
+    }
+}
+
+struct ValueDeserializer<'a> {
+    value: Value<'a>,
+    validate_struct_keys: bool,
+}
+
+impl<'a> ValueDeserializer<'a> {
+    fn new(value: Value<'a>) -> ValueDeserializer<'a> {
+        ValueDeserializer {
+            value,
+            validate_struct_keys: false,
+        }
+    }
+
+    fn with_struct_key_validation(mut self) -> Self {
+        self.validate_struct_keys = true;
+        self
+    }
+}
+
+impl<'de> de::Deserializer<'de> for ValueDeserializer<'de> {
+    type Error = Box<Error>;
+
+    fn deserialize_any<V>(self, visitor: V) -> Result<V::Value, Box<Error>>
+    where
+        V: de::Visitor<'de>,
+    {
+        let start = self.value.start;
+        let res = match self.value.e {
+            E::Integer(i) => visitor.visit_i64(i),
+            E::Boolean(b) => visitor.visit_bool(b),
+            E::Float(f) => visitor.visit_f64(f),
+            E::String(Cow::Borrowed(s)) => visitor.visit_borrowed_str(s),
+            E::String(Cow::Owned(s)) => visitor.visit_string(s),
+            E::Array(values) => {
+                let mut s = de::value::SeqDeserializer::new(values.into_iter());
+                let ret = visitor.visit_seq(&mut s)?;
+                s.end()?;
+                Ok(ret)
+            }
+            E::InlineTable(values) | E::DottedTable(values) => {
+                visitor.visit_map(InlineTableDeserializer {
+                    values: values.into_iter(),
+                    next_value: None,
+                    keys: HashSet::new(),
+                })
+            }
+        };
+        res.map_err(|mut err| {
+            // Attribute the error to whatever value returned the error.
+            err.fix_offset(|| Some(start));
+            err
+        })
+    }
+
+    fn deserialize_struct<V>(
+        self,
+        _name: &'static str,
+        fields: &'static [&'static str],
+        visitor: V,
+    ) -> Result<V::Value, Box<Error>>
+    where
+        V: de::Visitor<'de>,
+    {
+        if self.validate_struct_keys {
+            match self.value.e {
+                E::InlineTable(ref values) | E::DottedTable(ref values) => {
+                    let extra_fields = values
+                        .iter()
+                        .filter_map(|key_value| {
+                            let (ref key, ref _val) = *key_value;
+                            if fields.contains(&&*(key.1)) {
+                                None
+                            } else {
+                                Some(key.clone())
+                            }
+                        })
+                        .collect::<Vec<_>>();
+
+                    if !extra_fields.is_empty() {
+                        return Err(Error::from_kind(
+                            Some(self.value.start),
+                            ErrorKind::UnexpectedKeys {
+                                keys: extra_fields
+                                    .iter()
+                                    .map(|k| k.1.to_string())
+                                    .collect::<Vec<_>>(),
+                                available: fields,
+                            },
+                        ));
+                    }
+                }
+                _ => {}
+            }
+        }
+
+        self.deserialize_any(visitor)
+    }
+
+    // `None` is interpreted as a missing field so be sure to implement `Some`
+    // as a present field.
+    fn deserialize_option<V>(self, visitor: V) -> Result<V::Value, Box<Error>>
+    where
+        V: de::Visitor<'de>,
+    {
+        visitor.visit_some(self)
+    }
+
+    fn deserialize_enum<V>(
+        self,
+        _name: &'static str,
+        _variants: &'static [&'static str],
+        visitor: V,
+    ) -> Result<V::Value, Box<Error>>
+    where
+        V: de::Visitor<'de>,
+    {
+        match self.value.e {
+            E::String(val) => visitor.visit_enum(val.into_deserializer()),
+            e => Err(Error::from_kind(
+                Some(self.value.start),
+                ErrorKind::Wanted {
+                    expected: "string",
+                    found: e.type_name(),
+                },
+            )),
+        }
+    }
+
+    fn deserialize_newtype_struct<V>(
+        self,
+        _name: &'static str,
+        visitor: V,
+    ) -> Result<V::Value, Box<Error>>
+    where
+        V: de::Visitor<'de>,
+    {
+        visitor.visit_newtype_struct(self)
+    }
+
+    serde::forward_to_deserialize_any! {
+        bool u8 u16 u32 u64 i8 i16 i32 i64 f32 f64 char str string seq
+        bytes byte_buf map unit identifier
+        ignored_any unit_struct tuple_struct tuple
+    }
+}
+
+impl<'de, 'b> de::IntoDeserializer<'de, Box<Error>> for MapVisitor<'de, 'b> {
+    type Deserializer = MapVisitor<'de, 'b>;
+
+    fn into_deserializer(self) -> Self::Deserializer {
+        self
+    }
+}
+
+impl<'de, 'b> de::IntoDeserializer<'de, Box<Error>> for &'b mut Deserializer<'de> {
+    type Deserializer = Self;
+
+    fn into_deserializer(self) -> Self::Deserializer {
+        self
+    }
+}
+
+impl<'de> de::IntoDeserializer<'de, Box<Error>> for Value<'de> {
+    type Deserializer = ValueDeserializer<'de>;
+
+    fn into_deserializer(self) -> Self::Deserializer {
+        ValueDeserializer::new(self)
+    }
+}
+
+struct DottedTableDeserializer<'a> {
+    name: Cow<'a, str>,
+    value: Value<'a>,
+}
+
+impl<'de> de::EnumAccess<'de> for DottedTableDeserializer<'de> {
+    type Error = Box<Error>;
+    type Variant = TableEnumDeserializer<'de>;
+
+    fn variant_seed<V>(self, seed: V) -> Result<(V::Value, Self::Variant), Self::Error>
+    where
+        V: de::DeserializeSeed<'de>,
+    {
+        let (name, value) = (self.name, self.value);
+        seed.deserialize(StrDeserializer::new(name))
+            .map(|val| (val, TableEnumDeserializer { value }))
+    }
+}
+
+struct InlineTableDeserializer<'de> {
+    values: vec::IntoIter<TablePair<'de>>,
+    next_value: Option<Value<'de>>,
+    keys: HashSet<Cow<'de, str>>,
+}
+
+impl<'de> de::MapAccess<'de> for InlineTableDeserializer<'de> {
+    type Error = Box<Error>;
+
+    fn next_key_seed<K>(&mut self, seed: K) -> Result<Option<K::Value>, Box<Error>>
+    where
+        K: de::DeserializeSeed<'de>,
+    {
+        let ((span, key), value) = match self.values.next() {
+            Some(pair) => pair,
+            None => return Ok(None),
+        };
+        self.next_value = Some(value);
+        if !self.keys.insert(key.clone()) {
+            return Err(Error::from_kind(
+                Some(span.start),
+                ErrorKind::DuplicateKey(key.into_owned()),
+            ));
+        }
+        seed.deserialize(StrDeserializer::new(key)).map(Some)
+    }
+
+    fn next_value_seed<V>(&mut self, seed: V) -> Result<V::Value, Box<Error>>
+    where
+        V: de::DeserializeSeed<'de>,
+    {
+        let value = self.next_value.take().expect("Unable to read table values");
+        seed.deserialize(ValueDeserializer::new(value))
+    }
+}
+
+impl<'de> de::EnumAccess<'de> for InlineTableDeserializer<'de> {
+    type Error = Box<Error>;
+    type Variant = TableEnumDeserializer<'de>;
+
+    fn variant_seed<V>(mut self, seed: V) -> Result<(V::Value, Self::Variant), Self::Error>
+    where
+        V: de::DeserializeSeed<'de>,
+    {
+        let (key, value) = match self.values.next() {
+            Some(pair) => pair,
+            None => {
+                return Err(Error::from_kind(
+                    None, // FIXME: How do we get an offset here?
+                    ErrorKind::Wanted {
+                        expected: "table with exactly 1 entry",
+                        found: "empty table",
+                    },
+                ));
+            }
+        };
+
+        seed.deserialize(StrDeserializer::new(key.1))
+            .map(|val| (val, TableEnumDeserializer { value }))
+    }
+}
+
+/// Deserializes table values into enum variants.
+struct TableEnumDeserializer<'a> {
+    value: Value<'a>,
+}
+
+impl<'de> de::VariantAccess<'de> for TableEnumDeserializer<'de> {
+    type Error = Box<Error>;
+
+    fn unit_variant(self) -> Result<(), Self::Error> {
+        match self.value.e {
+            E::InlineTable(values) | E::DottedTable(values) => {
+                if values.is_empty() {
+                    Ok(())
+                } else {
+                    Err(Error::from_kind(
+                        Some(self.value.start),
+                        ErrorKind::ExpectedEmptyTable,
+                    ))
+                }
+            }
+            e => Err(Error::from_kind(
+                Some(self.value.start),
+                ErrorKind::Wanted {
+                    expected: "table",
+                    found: e.type_name(),
+                },
+            )),
+        }
+    }
+
+    fn newtype_variant_seed<T>(self, seed: T) -> Result<T::Value, Self::Error>
+    where
+        T: de::DeserializeSeed<'de>,
+    {
+        seed.deserialize(ValueDeserializer::new(self.value))
+    }
+
+    fn tuple_variant<V>(self, len: usize, visitor: V) -> Result<V::Value, Self::Error>
+    where
+        V: de::Visitor<'de>,
+    {
+        match self.value.e {
+            E::InlineTable(values) | E::DottedTable(values) => {
+                let tuple_values = values
+                    .into_iter()
+                    .enumerate()
+                    .map(|(index, (key, value))| match key.1.parse::<usize>() {
+                        Ok(key_index) if key_index == index => Ok(value),
+                        Ok(_) | Err(_) => Err(Error::from_kind(
+                            Some(key.0.start),
+                            ErrorKind::ExpectedTupleIndex {
+                                expected: index,
+                                found: key.1.to_string(),
+                            },
+                        )),
+                    })
+                    // Fold all values into a `Vec`, or return the first error.
+                    .fold(Ok(Vec::with_capacity(len)), |result, value_result| {
+                        result.and_then(move |mut tuple_values| match value_result {
+                            Ok(value) => {
+                                tuple_values.push(value);
+                                Ok(tuple_values)
+                            }
+                            // `Result<de::Value, Self::Error>` to `Result<Vec<_>, Self::Error>`
+                            Err(e) => Err(e),
+                        })
+                    })?;
+
+                if tuple_values.len() == len {
+                    de::Deserializer::deserialize_seq(
+                        ValueDeserializer::new(Value {
+                            e: E::Array(tuple_values),
+                            start: self.value.start,
+                            end: self.value.end,
+                        }),
+                        visitor,
+                    )
+                } else {
+                    Err(Error::from_kind(
+                        Some(self.value.start),
+                        ErrorKind::ExpectedTuple(len),
+                    ))
+                }
+            }
+            e => Err(Error::from_kind(
+                Some(self.value.start),
+                ErrorKind::Wanted {
+                    expected: "table",
+                    found: e.type_name(),
+                },
+            )),
+        }
+    }
+
+    fn struct_variant<V>(
+        self,
+        fields: &'static [&'static str],
+        visitor: V,
+    ) -> Result<V::Value, Self::Error>
+    where
+        V: de::Visitor<'de>,
+    {
+        de::Deserializer::deserialize_struct(
+            ValueDeserializer::new(self.value).with_struct_key_validation(),
+            "", // TODO: this should be the variant name
+            fields,
+            visitor,
+        )
+    }
+}
+
+impl<'a> Deserializer<'a> {
+    fn new(input: &'a str) -> Deserializer<'a> {
+        Deserializer {
+            tokens: Tokenizer::new(input),
+            input,
+        }
+    }
+
+    fn tables(&mut self) -> Result<Vec<Table<'a>>, Box<Error>> {
+        let mut tables = Vec::new();
+        let mut cur_table = Table {
+            at: 0,
+            header: Vec::new(),
+            values: None,
+            array: false,
+        };
+
+        while let Some(line) = self.line()? {
+            match line {
+                Line::Table {
+                    at,
+                    mut header,
+                    array,
+                } => {
+                    if !cur_table.header.is_empty() || cur_table.values.is_some() {
+                        tables.push(cur_table);
+                    }
+                    cur_table = Table {
+                        at,
+                        header: Vec::new(),
+                        values: Some(Vec::new()),
+                        array,
+                    };
+                    loop {
+                        let part = header.next().map_err(|e| self.token_error(e));
+                        match part? {
+                            Some(part) => cur_table.header.push(part),
+                            None => break,
+                        }
+                    }
+                }
+                Line::KeyValue(key, value) => {
+                    if cur_table.values.is_none() {
+                        cur_table.values = Some(Vec::new());
+                    }
+                    self.add_dotted_key(key, value, cur_table.values.as_mut().unwrap())?;
+                }
+            }
+        }
+        if !cur_table.header.is_empty() || cur_table.values.is_some() {
+            tables.push(cur_table);
+        }
+        Ok(tables)
+    }
+
+    fn line(&mut self) -> Result<Option<Line<'a>>, Box<Error>> {
+        loop {
+            self.eat_whitespace();
+            if self.eat_comment()? {
+                continue;
+            }
+            if self.eat(Token::Newline)? {
+                continue;
+            }
+            break;
+        }
+
+        match self.peek()? {
+            Some((_, Token::LeftBracket)) => self.table_header().map(Some),
+            Some(_) => self.key_value().map(Some),
+            None => Ok(None),
+        }
+    }
+
+    fn table_header(&mut self) -> Result<Line<'a>, Box<Error>> {
+        let start = self.tokens.current();
+        self.expect(Token::LeftBracket)?;
+        let array = self.eat(Token::LeftBracket)?;
+        let ret = Header::new(self.tokens.clone(), array);
+        self.tokens.skip_to_newline();
+        Ok(Line::Table {
+            at: start,
+            header: ret,
+            array,
+        })
+    }
+
+    fn key_value(&mut self) -> Result<Line<'a>, Box<Error>> {
+        let key = self.dotted_key()?;
+        self.eat_whitespace();
+        self.expect(Token::Equals)?;
+        self.eat_whitespace();
+
+        let value = self.value()?;
+        self.eat_whitespace();
+        if !self.eat_comment()? {
+            self.eat_newline_or_eof()?;
+        }
+
+        Ok(Line::KeyValue(key, value))
+    }
+
+    fn value(&mut self) -> Result<Value<'a>, Box<Error>> {
+        let at = self.tokens.current();
+        let value = match self.next()? {
+            Some((Span { start, end }, Token::String { val, .. })) => Value {
+                e: E::String(val),
+                start,
+                end,
+            },
+            Some((Span { start, end }, Token::Keylike("true"))) => Value {
+                e: E::Boolean(true),
+                start,
+                end,
+            },
+            Some((Span { start, end }, Token::Keylike("false"))) => Value {
+                e: E::Boolean(false),
+                start,
+                end,
+            },
+            Some((span, Token::Keylike(key))) => self.parse_keylike(at, span, key)?,
+            Some((span, Token::Plus)) => self.number_leading_plus(span)?,
+            Some((Span { start, .. }, Token::LeftBrace)) => {
+                self.inline_table().map(|(Span { end, .. }, table)| Value {
+                    e: E::InlineTable(table),
+                    start,
+                    end,
+                })?
+            }
+            Some((Span { start, .. }, Token::LeftBracket)) => {
+                self.array().map(|(Span { end, .. }, array)| Value {
+                    e: E::Array(array),
+                    start,
+                    end,
+                })?
+            }
+            Some(token) => {
+                return Err(self.error(
+                    at,
+                    ErrorKind::Wanted {
+                        expected: "a value",
+                        found: token.1.describe(),
+                    },
+                ));
+            }
+            None => return Err(self.eof()),
+        };
+        Ok(value)
+    }
+
+    fn parse_keylike(
+        &mut self,
+        at: usize,
+        span: Span,
+        key: &'a str,
+    ) -> Result<Value<'a>, Box<Error>> {
+        if key == "inf" || key == "nan" {
+            return self.number(span, key);
+        }
+
+        let first_char = key.chars().next().expect("key should not be empty here");
+        match first_char {
+            '-' | '0'..='9' => self.number(span, key),
+            _ => Err(self.error(at, ErrorKind::UnquotedString)),
+        }
+    }
+
+    fn number(&mut self, Span { start, end }: Span, s: &'a str) -> Result<Value<'a>, Box<Error>> {
+        let to_integer = |f| Value {
+            e: E::Integer(f),
+            start,
+            end,
+        };
+        if let Some(s) = s.strip_prefix("0x") {
+            self.integer(s, 16).map(to_integer)
+        } else if let Some(s) = s.strip_prefix("0o") {
+            self.integer(s, 8).map(to_integer)
+        } else if let Some(s) = s.strip_prefix("0b") {
+            self.integer(s, 2).map(to_integer)
+        } else if s.contains('e') || s.contains('E') {
+            self.float(s, None).map(|f| Value {
+                e: E::Float(f),
+                start,
+                end,
+            })
+        } else if self.eat(Token::Period)? {
+            let at = self.tokens.current();
+            match self.next()? {
+                Some((Span { start, end }, Token::Keylike(after))) => {
+                    self.float(s, Some(after)).map(|f| Value {
+                        e: E::Float(f),
+                        start,
+                        end,
+                    })
+                }
+                _ => Err(self.error(at, ErrorKind::NumberInvalid)),
+            }
+        } else if s == "inf" {
+            Ok(Value {
+                e: E::Float(f64::INFINITY),
+                start,
+                end,
+            })
+        } else if s == "-inf" {
+            Ok(Value {
+                e: E::Float(f64::NEG_INFINITY),
+                start,
+                end,
+            })
+        } else if s == "nan" {
+            Ok(Value {
+                e: E::Float(f64::NAN),
+                start,
+                end,
+            })
+        } else if s == "-nan" {
+            Ok(Value {
+                e: E::Float(-f64::NAN),
+                start,
+                end,
+            })
+        } else {
+            self.integer(s, 10).map(to_integer)
+        }
+    }
+
+    fn number_leading_plus(&mut self, Span { start, .. }: Span) -> Result<Value<'a>, Box<Error>> {
+        let start_token = self.tokens.current();
+        match self.next()? {
+            Some((Span { end, .. }, Token::Keylike(s))) => self.number(Span { start, end }, s),
+            _ => Err(self.error(start_token, ErrorKind::NumberInvalid)),
+        }
+    }
+
+    fn integer(&self, s: &'a str, radix: u32) -> Result<i64, Box<Error>> {
+        let allow_sign = radix == 10;
+        let allow_leading_zeros = radix != 10;
+        let (prefix, suffix) = self.parse_integer(s, allow_sign, allow_leading_zeros, radix)?;
+        let start = self.tokens.substr_offset(s);
+        if !suffix.is_empty() {
+            return Err(self.error(start, ErrorKind::NumberInvalid));
+        }
+        i64::from_str_radix(prefix.replace('_', "").trim_start_matches('+'), radix)
+            .map_err(|_e| self.error(start, ErrorKind::NumberInvalid))
+    }
+
+    fn parse_integer(
+        &self,
+        s: &'a str,
+        allow_sign: bool,
+        allow_leading_zeros: bool,
+        radix: u32,
+    ) -> Result<(&'a str, &'a str), Box<Error>> {
+        let start = self.tokens.substr_offset(s);
+
+        let mut first = true;
+        let mut first_zero = false;
+        let mut underscore = false;
+        let mut end = s.len();
+        for (i, c) in s.char_indices() {
+            let at = i + start;
+            if i == 0 && (c == '+' || c == '-') && allow_sign {
+                continue;
+            }
+
+            if c == '0' && first {
+                first_zero = true;
+            } else if c.is_digit(radix) {
+                if !first && first_zero && !allow_leading_zeros {
+                    return Err(self.error(at, ErrorKind::NumberInvalid));
+                }
+                underscore = false;
+            } else if c == '_' && first {
+                return Err(self.error(at, ErrorKind::NumberInvalid));
+            } else if c == '_' && !underscore {
+                underscore = true;
+            } else {
+                end = i;
+                break;
+            }
+            first = false;
+        }
+        if first || underscore {
+            return Err(self.error(start, ErrorKind::NumberInvalid));
+        }
+        Ok((&s[..end], &s[end..]))
+    }
+
+    fn float(&mut self, s: &'a str, after_decimal: Option<&'a str>) -> Result<f64, Box<Error>> {
+        let (integral, mut suffix) = self.parse_integer(s, true, false, 10)?;
+        let start = self.tokens.substr_offset(integral);
+
+        let mut fraction = None;
+        if let Some(after) = after_decimal {
+            if !suffix.is_empty() {
+                return Err(self.error(start, ErrorKind::NumberInvalid));
+            }
+            let (a, b) = self.parse_integer(after, false, true, 10)?;
+            fraction = Some(a);
+            suffix = b;
+        }
+
+        let mut exponent = None;
+        if suffix.starts_with('e') || suffix.starts_with('E') {
+            let (a, b) = if suffix.len() == 1 {
+                self.eat(Token::Plus)?;
+                match self.next()? {
+                    Some((_, Token::Keylike(s))) => self.parse_integer(s, false, true, 10)?,
+                    _ => return Err(self.error(start, ErrorKind::NumberInvalid)),
+                }
+            } else {
+                self.parse_integer(&suffix[1..], true, true, 10)?
+            };
+            if !b.is_empty() {
+                return Err(self.error(start, ErrorKind::NumberInvalid));
+            }
+            exponent = Some(a);
+        } else if !suffix.is_empty() {
+            return Err(self.error(start, ErrorKind::NumberInvalid));
+        }
+
+        let mut number = integral
+            .trim_start_matches('+')
+            .chars()
+            .filter(|c| *c != '_')
+            .collect::<String>();
+        if let Some(fraction) = fraction {
+            number.push('.');
+            number.extend(fraction.chars().filter(|c| *c != '_'));
+        }
+        if let Some(exponent) = exponent {
+            number.push('E');
+            number.extend(exponent.chars().filter(|c| *c != '_'));
+        }
+        number
+            .parse()
+            .map_err(|_e| self.error(start, ErrorKind::NumberInvalid))
+            .and_then(|n: f64| {
+                if n.is_finite() {
+                    Ok(n)
+                } else {
+                    Err(self.error(start, ErrorKind::NumberInvalid))
+                }
+            })
+    }
+
+    // TODO(#140): shouldn't buffer up this entire table in memory, it'd be
+    // great to defer parsing everything until later.
+    fn inline_table(&mut self) -> Result<(Span, Vec<TablePair<'a>>), Box<Error>> {
+        let mut ret = Vec::new();
+        self.eat_whitespace();
+        if let Some(span) = self.eat_spanned(Token::RightBrace)? {
+            return Ok((span, ret));
+        }
+        loop {
+            let key = self.dotted_key()?;
+            self.eat_whitespace();
+            self.expect(Token::Equals)?;
+            self.eat_whitespace();
+            let value = self.value()?;
+            self.add_dotted_key(key, value, &mut ret)?;
+
+            self.eat_whitespace();
+            if let Some(span) = self.eat_spanned(Token::RightBrace)? {
+                return Ok((span, ret));
+            }
+            self.expect(Token::Comma)?;
+            self.eat_whitespace();
+        }
+    }
+
+    // TODO(#140): shouldn't buffer up this entire array in memory, it'd be
+    // great to defer parsing everything until later.
+    fn array(&mut self) -> Result<(Span, Vec<Value<'a>>), Box<Error>> {
+        let mut ret = Vec::new();
+
+        let intermediate = |me: &mut Deserializer| -> Result<(), Box<Error>> {
+            loop {
+                me.eat_whitespace();
+                if !me.eat(Token::Newline)? && !me.eat_comment()? {
+                    break;
+                }
+            }
+            Ok(())
+        };
+
+        loop {
+            intermediate(self)?;
+            if let Some(span) = self.eat_spanned(Token::RightBracket)? {
+                return Ok((span, ret));
+            }
+            let value = self.value()?;
+            ret.push(value);
+            intermediate(self)?;
+            if !self.eat(Token::Comma)? {
+                break;
+            }
+        }
+        intermediate(self)?;
+        let span = self.expect_spanned(Token::RightBracket)?;
+        Ok((span, ret))
+    }
+
+    fn table_key(&mut self) -> Result<(Span, Cow<'a, str>), Box<Error>> {
+        self.tokens.table_key().map_err(|e| self.token_error(e))
+    }
+
+    fn dotted_key(&mut self) -> Result<Vec<(Span, Cow<'a, str>)>, Box<Error>> {
+        let mut result = Vec::new();
+        result.push(self.table_key()?);
+        self.eat_whitespace();
+        while self.eat(Token::Period)? {
+            self.eat_whitespace();
+            result.push(self.table_key()?);
+            self.eat_whitespace();
+        }
+        Ok(result)
+    }
+
+    /// Stores a value in the appropriate hierarchical structure positioned based on the dotted key.
+    ///
+    /// Given the following definition: `multi.part.key = "value"`, `multi` and `part` are
+    /// intermediate parts which are mapped to the relevant fields in the deserialized type's data
+    /// hierarchy.
+    ///
+    /// # Parameters
+    ///
+    /// * `key_parts`: Each segment of the dotted key, e.g. `part.one` maps to
+    ///                `vec![Cow::Borrowed("part"), Cow::Borrowed("one")].`
+    /// * `value`: The parsed value.
+    /// * `values`: The `Vec` to store the value in.
+    fn add_dotted_key(
+        &self,
+        mut key_parts: Vec<(Span, Cow<'a, str>)>,
+        value: Value<'a>,
+        values: &mut Vec<TablePair<'a>>,
+    ) -> Result<(), Box<Error>> {
+        let key = key_parts.remove(0);
+        if key_parts.is_empty() {
+            values.push((key, value));
+            return Ok(());
+        }
+        match values.iter_mut().find(|&&mut (ref k, _)| *k.1 == key.1) {
+            Some(&mut (
+                _,
+                Value {
+                    e: E::DottedTable(ref mut v),
+                    ..
+                },
+            )) => {
+                return self.add_dotted_key(key_parts, value, v);
+            }
+            Some(&mut (_, Value { start, .. })) => {
+                return Err(self.error(start, ErrorKind::DottedKeyInvalidType));
+            }
+            None => {}
+        }
+        // The start/end value is somewhat misleading here.
+        let table_values = Value {
+            e: E::DottedTable(Vec::new()),
+            start: value.start,
+            end: value.end,
+        };
+        values.push((key, table_values));
+        let last_i = values.len() - 1;
+        if let (
+            _,
+            Value {
+                e: E::DottedTable(ref mut v),
+                ..
+            },
+        ) = values[last_i]
+        {
+            self.add_dotted_key(key_parts, value, v)?;
+        }
+        Ok(())
+    }
+
+    fn eat_whitespace(&mut self) {
+        self.tokens.eat_whitespace();
+    }
+
+    fn eat_comment(&mut self) -> Result<bool, Box<Error>> {
+        self.tokens.eat_comment().map_err(|e| self.token_error(e))
+    }
+
+    fn eat_newline_or_eof(&mut self) -> Result<(), Box<Error>> {
+        self.tokens
+            .eat_newline_or_eof()
+            .map_err(|e| self.token_error(e))
+    }
+
+    fn eat(&mut self, expected: Token<'a>) -> Result<bool, Box<Error>> {
+        self.tokens.eat(expected).map_err(|e| self.token_error(e))
+    }
+
+    fn eat_spanned(&mut self, expected: Token<'a>) -> Result<Option<Span>, Box<Error>> {
+        self.tokens
+            .eat_spanned(expected)
+            .map_err(|e| self.token_error(e))
+    }
+
+    fn expect(&mut self, expected: Token<'a>) -> Result<(), Box<Error>> {
+        self.tokens
+            .expect(expected)
+            .map_err(|e| self.token_error(e))
+    }
+
+    fn expect_spanned(&mut self, expected: Token<'a>) -> Result<Span, Box<Error>> {
+        self.tokens
+            .expect_spanned(expected)
+            .map_err(|e| self.token_error(e))
+    }
+
+    fn next(&mut self) -> Result<Option<(Span, Token<'a>)>, Box<Error>> {
+        self.tokens.next().map_err(|e| self.token_error(e))
+    }
+
+    fn peek(&mut self) -> Result<Option<(Span, Token<'a>)>, Box<Error>> {
+        self.tokens.peek().map_err(|e| self.token_error(e))
+    }
+
+    fn eof(&self) -> Box<Error> {
+        self.error(self.input.len(), ErrorKind::UnexpectedEof)
+    }
+
+    fn token_error(&self, error: TokenError) -> Box<Error> {
+        match error {
+            TokenError::InvalidCharInString(at, ch) => {
+                self.error(at, ErrorKind::InvalidCharInString(ch))
+            }
+            TokenError::InvalidEscape(at, ch) => self.error(at, ErrorKind::InvalidEscape(ch)),
+            TokenError::InvalidEscapeValue(at, v) => {
+                self.error(at, ErrorKind::InvalidEscapeValue(v))
+            }
+            TokenError::InvalidHexEscape(at, ch) => self.error(at, ErrorKind::InvalidHexEscape(ch)),
+            TokenError::NewlineInString(at) => self.error(at, ErrorKind::NewlineInString),
+            TokenError::Unexpected(at, ch) => self.error(at, ErrorKind::Unexpected(ch)),
+            TokenError::UnterminatedString(at) => self.error(at, ErrorKind::UnterminatedString),
+            TokenError::NewlineInTableKey(at) => self.error(at, ErrorKind::NewlineInTableKey),
+            TokenError::Wanted {
+                at,
+                expected,
+                found,
+            } => self.error(at, ErrorKind::Wanted { expected, found }),
+            TokenError::MultilineStringKey(at) => self.error(at, ErrorKind::MultilineStringKey),
+        }
+    }
+
+    fn error(&self, at: usize, kind: ErrorKind) -> Box<Error> {
+        let mut err = Error::from_kind(Some(at), kind);
+        err.fix_linecol(|at| self.to_linecol(at));
+        err
+    }
+
+    /// Converts a byte offset from an error message to a (line, column) pair
+    ///
+    /// All indexes are 0-based.
+    fn to_linecol(&self, offset: usize) -> (usize, usize) {
+        let mut cur = 0;
+        // Use split_terminator instead of lines so that if there is a `\r`, it
+        // is included in the offset calculation. The `+1` values below account
+        // for the `\n`.
+        for (i, line) in self.input.split_terminator('\n').enumerate() {
+            if cur + line.len() + 1 > offset {
+                return (i, offset - cur);
+            }
+            cur += line.len() + 1;
+        }
+        (self.input.lines().count(), 0)
+    }
+}
+
+impl Error {
+    pub(crate) fn line_col(&self) -> Option<(usize, usize)> {
+        self.line.map(|line| (line, self.col))
+    }
+
+    fn from_kind(at: Option<usize>, kind: ErrorKind) -> Box<Self> {
+        Box::new(Error {
+            kind,
+            line: None,
+            col: 0,
+            at,
+            message: String::new(),
+            key: Vec::new(),
+        })
+    }
+
+    fn custom(at: Option<usize>, s: String) -> Box<Self> {
+        Box::new(Error {
+            kind: ErrorKind::Custom,
+            line: None,
+            col: 0,
+            at,
+            message: s,
+            key: Vec::new(),
+        })
+    }
+
+    pub(crate) fn add_key_context(&mut self, key: &str) {
+        self.key.insert(0, key.to_string());
+    }
+
+    fn fix_offset<F>(&mut self, f: F)
+    where
+        F: FnOnce() -> Option<usize>,
+    {
+        // An existing offset is always better positioned than anything we might
+        // want to add later.
+        if self.at.is_none() {
+            self.at = f();
+        }
+    }
+
+    fn fix_linecol<F>(&mut self, f: F)
+    where
+        F: FnOnce(usize) -> (usize, usize),
+    {
+        if let Some(at) = self.at {
+            let (line, col) = f(at);
+            self.line = Some(line);
+            self.col = col;
+        }
+    }
+}
+
+impl std::convert::From<Error> for std::io::Error {
+    fn from(e: Error) -> Self {
+        std::io::Error::new(std::io::ErrorKind::InvalidData, e.to_string())
+    }
+}
+
+impl Display for Error {
+    fn fmt(&self, f: &mut fmt::Formatter) -> fmt::Result {
+        match &self.kind {
+            ErrorKind::UnexpectedEof => "unexpected eof encountered".fmt(f)?,
+            ErrorKind::InvalidCharInString(c) => write!(
+                f,
+                "invalid character in string: `{}`",
+                c.escape_default().collect::<String>()
+            )?,
+            ErrorKind::InvalidEscape(c) => write!(
+                f,
+                "invalid escape character in string: `{}`",
+                c.escape_default().collect::<String>()
+            )?,
+            ErrorKind::InvalidHexEscape(c) => write!(
+                f,
+                "invalid hex escape character in string: `{}`",
+                c.escape_default().collect::<String>()
+            )?,
+            ErrorKind::InvalidEscapeValue(c) => write!(f, "invalid escape value: `{}`", c)?,
+            ErrorKind::NewlineInString => "newline in string found".fmt(f)?,
+            ErrorKind::Unexpected(ch) => write!(
+                f,
+                "unexpected character found: `{}`",
+                ch.escape_default().collect::<String>()
+            )?,
+            ErrorKind::UnterminatedString => "unterminated string".fmt(f)?,
+            ErrorKind::NewlineInTableKey => "found newline in table key".fmt(f)?,
+            ErrorKind::Wanted { expected, found } => {
+                write!(f, "expected {}, found {}", expected, found)?;
+            }
+            ErrorKind::NumberInvalid => "invalid number".fmt(f)?,
+            ErrorKind::DuplicateTable(ref s) => {
+                write!(f, "redefinition of table `{}`", s)?;
+            }
+            ErrorKind::DuplicateKey(ref s) => {
+                write!(f, "duplicate key: `{}`", s)?;
+            }
+            ErrorKind::RedefineAsArray => "table redefined as array".fmt(f)?,
+            ErrorKind::MultilineStringKey => "multiline strings are not allowed for key".fmt(f)?,
+            ErrorKind::Custom => self.message.fmt(f)?,
+            ErrorKind::ExpectedTuple(l) => write!(f, "expected table with length {}", l)?,
+            ErrorKind::ExpectedTupleIndex {
+                expected,
+                ref found,
+            } => write!(f, "expected table key `{}`, but was `{}`", expected, found)?,
+            ErrorKind::ExpectedEmptyTable => "expected empty table".fmt(f)?,
+            ErrorKind::DottedKeyInvalidType => {
+                "dotted key attempted to extend non-table type".fmt(f)?;
+            }
+            ErrorKind::UnexpectedKeys {
+                ref keys,
+                available,
+            } => write!(
+                f,
+                "unexpected keys in table: `{:?}`, available keys: `{:?}`",
+                keys, available
+            )?,
+            ErrorKind::UnquotedString => write!(
+                f,
+                "invalid TOML value, did you mean to use a quoted string?"
+            )?,
+        }
+
+        if !self.key.is_empty() {
+            write!(f, " for key `")?;
+            for (i, k) in self.key.iter().enumerate() {
+                if i > 0 {
+                    write!(f, ".")?;
+                }
+                write!(f, "{}", k)?;
+            }
+            write!(f, "`")?;
+        }
+
+        if let Some(line) = self.line {
+            write!(f, " at line {} column {}", line + 1, self.col + 1)?;
+        }
+
+        Ok(())
+    }
+}
+
+impl error::Error for Error {}
+
+impl de::Error for Box<Error> {
+    fn custom<T: Display>(msg: T) -> Self {
+        Error::custom(None, msg.to_string())
+    }
+}
+
+enum Line<'a> {
+    Table {
+        at: usize,
+        header: Header<'a>,
+        array: bool,
+    },
+    KeyValue(Vec<(Span, Cow<'a, str>)>, Value<'a>),
+}
+
+struct Header<'a> {
+    first: bool,
+    array: bool,
+    tokens: Tokenizer<'a>,
+}
+
+impl<'a> Header<'a> {
+    fn new(tokens: Tokenizer<'a>, array: bool) -> Header<'a> {
+        Header {
+            first: true,
+            array,
+            tokens,
+        }
+    }
+
+    fn next(&mut self) -> Result<Option<(Span, Cow<'a, str>)>, TokenError> {
+        self.tokens.eat_whitespace();
+
+        if self.first || self.tokens.eat(Token::Period)? {
+            self.first = false;
+            self.tokens.eat_whitespace();
+            self.tokens.table_key().map(Some)
+        } else {
+            self.tokens.expect(Token::RightBracket)?;
+            if self.array {
+                self.tokens.expect(Token::RightBracket)?;
+            }
+
+            self.tokens.eat_whitespace();
+            if !self.tokens.eat_comment()? {
+                self.tokens.eat_newline_or_eof()?;
+            }
+            Ok(None)
+        }
+    }
+}
+
+#[derive(Debug)]
+struct Value<'a> {
+    e: E<'a>,
+    start: usize,
+    end: usize,
+}
+
+#[derive(Debug)]
+enum E<'a> {
+    Integer(i64),
+    Float(f64),
+    Boolean(bool),
+    String(Cow<'a, str>),
+    Array(Vec<Value<'a>>),
+    InlineTable(Vec<TablePair<'a>>),
+    DottedTable(Vec<TablePair<'a>>),
+}
+
+impl<'a> E<'a> {
+    fn type_name(&self) -> &'static str {
+        match *self {
+            E::String(..) => "string",
+            E::Integer(..) => "integer",
+            E::Float(..) => "float",
+            E::Boolean(..) => "boolean",
+            E::Array(..) => "array",
+            E::InlineTable(..) => "inline table",
+            E::DottedTable(..) => "dotted table",
+        }
+    }
+}
diff --git a/vendor/basic-toml/src/error.rs b/vendor/basic-toml/src/error.rs
new file mode 100644
index 000000000..9abfd53e8
--- /dev/null
+++ b/vendor/basic-toml/src/error.rs
@@ -0,0 +1,54 @@
+use std::fmt::{self, Debug, Display};
+
+/// Errors that can occur when serializing or deserializing TOML.
+pub struct Error(Box<ErrorInner>);
+
+pub(crate) enum ErrorInner {
+    Ser(crate::ser::Error),
+    De(crate::de::Error),
+}
+
+impl Error {
+    /// Produces a (line, column) pair of the position of the error if
+    /// available.
+    ///
+    /// All indexes are 0-based.
+    pub fn line_col(&self) -> Option<(usize, usize)> {
+        match &*self.0 {
+            ErrorInner::Ser(_) => None,
+            ErrorInner::De(error) => error.line_col(),
+        }
+    }
+}
+
+impl From<crate::ser::Error> for Error {
+    fn from(error: crate::ser::Error) -> Self {
+        Error(Box::new(ErrorInner::Ser(error)))
+    }
+}
+
+impl From<crate::de::Error> for Error {
+    fn from(error: crate::de::Error) -> Self {
+        Error(Box::new(ErrorInner::De(error)))
+    }
+}
+
+impl Display for Error {
+    fn fmt(&self, formatter: &mut fmt::Formatter) -> fmt::Result {
+        match &*self.0 {
+            ErrorInner::Ser(error) => Display::fmt(error, formatter),
+            ErrorInner::De(error) => Display::fmt(error, formatter),
+        }
+    }
+}
+
+impl Debug for Error {
+    fn fmt(&self, formatter: &mut fmt::Formatter) -> fmt::Result {
+        match &*self.0 {
+            ErrorInner::Ser(error) => Debug::fmt(error, formatter),
+            ErrorInner::De(error) => Debug::fmt(error, formatter),
+        }
+    }
+}
+
+impl std::error::Error for Error {}
diff --git a/vendor/basic-toml/src/lib.rs b/vendor/basic-toml/src/lib.rs
new file mode 100644
index 000000000..d060fd046
--- /dev/null
+++ b/vendor/basic-toml/src/lib.rs
@@ -0,0 +1,141 @@
+//! [![github]](https://github.com/dtolnay/basic-toml)&ensp;[![crates-io]](https://crates.io/crates/basic-toml)&ensp;[![docs-rs]](https://docs.rs/basic-toml)
+//!
+//! [github]: https://img.shields.io/badge/github-8da0cb?style=for-the-badge&labelColor=555555&logo=github
+//! [crates-io]: https://img.shields.io/badge/crates.io-fc8d62?style=for-the-badge&labelColor=555555&logo=rust
+//! [docs-rs]: https://img.shields.io/badge/docs.rs-66c2a5?style=for-the-badge&labelColor=555555&logo=docs.rs
+//!
+//! <br>
+//!
+//! A library for parsing and producing data in [TOML] format using [Serde].
+//!
+//! TOML is designed to be "a config file format for humans": minimal and easy
+//! to read due to obvious semantics.
+//!
+//! ```toml
+//! [package]
+//! name = "basic-toml"
+#![doc = concat!("version = \"", env!("CARGO_PKG_VERSION_MAJOR"), ".", env!("CARGO_PKG_VERSION_MINOR"), ".", env!("CARGO_PKG_VERSION_PATCH"), "\"")]
+//! authors = ["Alex Crichton <alex@alexcrichton.com>"]
+//!
+//! [dependencies]
+//! serde = "1.0"
+//! ```
+//!
+//! The TOML format is widely used throughout the Rust community for
+//! configuration, notably being used by [Cargo], Rust's package manager.
+//!
+//! [TOML]: https://toml.io
+//! [Serde]: https://serde.rs
+//! [Cargo]: https://crates.io
+//!
+//! # Deserialization
+//!
+//! ```
+//! use semver::{Version, VersionReq};
+//! use serde_derive::Deserialize;
+//! use std::collections::BTreeMap as Map;
+//!
+//! #[derive(Deserialize)]
+//! struct Manifest {
+//!     package: Package,
+//!     #[serde(default)]
+//!     dependencies: Map<String, VersionReq>,
+//! }
+//!
+//! #[derive(Deserialize)]
+//! struct Package {
+//!     name: String,
+//!     version: Version,
+//!     #[serde(default)]
+//!     authors: Vec<String>,
+//! }
+//!
+//! fn main() {
+//!     let manifest: Manifest = basic_toml::from_str(r#"
+//!         [package]
+//!         name = "basic-toml"
+#![doc = concat!("        version = \"", env!("CARGO_PKG_VERSION_MAJOR"), ".", env!("CARGO_PKG_VERSION_MINOR"), ".", env!("CARGO_PKG_VERSION_PATCH"), "\"")]
+//!         authors = ["Alex Crichton <alex@alexcrichton.com>"]
+//!
+//!         [dependencies]
+//!         serde = "^1.0"
+//!     "#).unwrap();
+//!
+//!     assert_eq!(manifest.package.name, "basic-toml");
+#![doc = concat!("    assert_eq!(manifest.package.version, Version::new(", env!("CARGO_PKG_VERSION_MAJOR"), ", ", env!("CARGO_PKG_VERSION_MINOR"), ", ", env!("CARGO_PKG_VERSION_PATCH"), "));")]
+//!     assert_eq!(manifest.package.authors, ["Alex Crichton <alex@alexcrichton.com>"]);
+//!     assert_eq!(manifest.dependencies["serde"].to_string(), "^1.0");
+//! }
+//! ```
+//!
+//! # Serialization
+//!
+//! ```
+//! use semver::{Version, VersionReq};
+//! use serde_derive::Serialize;
+//! use std::collections::BTreeMap as Map;
+//!
+//! #[derive(Serialize)]
+//! struct Manifest {
+//!     package: Package,
+//!     dependencies: Map<String, VersionReq>,
+//! }
+//!
+//! #[derive(Serialize)]
+//! struct Package {
+//!     name: String,
+//!     version: Version,
+//!     authors: Vec<String>,
+//! }
+//!
+//! fn main() {
+//!     let manifest = Manifest {
+//!         package: Package {
+//!             name: "basic-toml".to_owned(),
+#![doc = concat!("            version: Version::new(", env!("CARGO_PKG_VERSION_MAJOR"), ", ", env!("CARGO_PKG_VERSION_MINOR"), ", ", env!("CARGO_PKG_VERSION_PATCH"), "),")]
+//!             authors: vec!["Alex Crichton <alex@alexcrichton.com>".to_owned()],
+//!         },
+//!         dependencies: {
+//!             let mut dependencies = Map::new();
+//!             dependencies.insert("serde".to_owned(), "^1.0".parse().unwrap());
+//!             dependencies
+//!         },
+//!     };
+//!
+//!     let toml = basic_toml::to_string(&manifest).unwrap();
+//!     print!("{}", toml);
+//! }
+//! ```
+//!
+//! # Spec compatibility
+//!
+//! TOML v0.5.0.
+//!
+//! TOML's date and time syntax are not supported.
+
+#![doc(html_root_url = "https://docs.rs/basic-toml/0.1.2")]
+#![deny(missing_docs)]
+#![allow(
+    clippy::bool_to_int_with_if,
+    clippy::let_underscore_untyped,
+    clippy::manual_let_else,
+    clippy::manual_range_contains,
+    clippy::match_like_matches_macro,
+    clippy::missing_errors_doc,
+    clippy::must_use_candidate,
+    clippy::needless_doctest_main,
+    clippy::needless_pass_by_value,
+    clippy::similar_names,
+    clippy::type_complexity,
+    clippy::uninlined_format_args,
+    clippy::unwrap_or_else_default
+)]
+
+mod de;
+mod error;
+mod ser;
+mod tokens;
+
+pub use crate::de::{from_slice, from_str};
+pub use crate::error::Error;
+pub use crate::ser::to_string;
diff --git a/vendor/basic-toml/src/ser.rs b/vendor/basic-toml/src/ser.rs
new file mode 100644
index 000000000..c7a600898
--- /dev/null
+++ b/vendor/basic-toml/src/ser.rs
@@ -0,0 +1,838 @@
+use serde::ser::{self, Serialize};
+use std::cell::Cell;
+use std::error;
+use std::fmt::{self, Display, Write};
+
+/// Serialize the given data structure as a String of TOML.
+///
+/// Serialization can fail if `T`'s implementation of `Serialize` decides to
+/// fail, if `T` contains a map with non-string keys, or if `T` attempts to
+/// serialize an unsupported datatype such as an enum, tuple, or tuple struct.
+pub fn to_string<T: ?Sized>(value: &T) -> Result<String, crate::Error>
+where
+    T: Serialize,
+{
+    let mut dst = String::with_capacity(128);
+    value.serialize(&mut Serializer::new(&mut dst))?;
+    Ok(dst)
+}
+
+#[derive(Debug)]
+pub(crate) enum Error {
+    /// Indicates that a Rust type was requested to be serialized but it was not
+    /// supported.
+    ///
+    /// Currently the TOML format does not support serializing types such as
+    /// enums, tuples and tuple structs.
+    UnsupportedType,
+
+    /// The key of all TOML maps must be strings, but serialization was
+    /// attempted where the key of a map was not a string.
+    KeyNotString,
+
+    /// All values in a TOML table must be emitted before further tables are
+    /// emitted. If a value is emitted *after* a table then this error is
+    /// generated.
+    ValueAfterTable,
+
+    /// None was attempted to be serialized, but it's not supported.
+    UnsupportedNone,
+
+    /// A custom error which could be generated when serializing a particular
+    /// type.
+    Custom(String),
+}
+
+struct Serializer<'a> {
+    dst: &'a mut String,
+    state: State<'a>,
+}
+
+#[derive(Debug, Copy, Clone)]
+enum ArrayState {
+    Started,
+    StartedAsATable,
+}
+
+#[derive(Debug, Clone)]
+enum State<'a> {
+    Table {
+        key: &'a str,
+        parent: &'a State<'a>,
+        first: &'a Cell<bool>,
+        table_emitted: &'a Cell<bool>,
+    },
+    Array {
+        parent: &'a State<'a>,
+        first: &'a Cell<bool>,
+        type_: &'a Cell<Option<ArrayState>>,
+        len: Option<usize>,
+    },
+    End,
+}
+
+struct SerializeSeq<'a, 'b> {
+    ser: &'b mut Serializer<'a>,
+    first: Cell<bool>,
+    type_: Cell<Option<ArrayState>>,
+    len: Option<usize>,
+}
+
+struct SerializeTable<'a, 'b> {
+    ser: &'b mut Serializer<'a>,
+    key: String,
+    first: Cell<bool>,
+    table_emitted: Cell<bool>,
+}
+
+impl<'a> Serializer<'a> {
+    fn new(dst: &'a mut String) -> Serializer<'a> {
+        Serializer {
+            dst,
+            state: State::End,
+        }
+    }
+
+    fn display<T: Display>(&mut self, t: T, type_: ArrayState) -> Result<(), Error> {
+        self.emit_key(type_)?;
+        write!(self.dst, "{}", t).map_err(ser::Error::custom)?;
+        if let State::Table { .. } = self.state {
+            self.dst.push('\n');
+        }
+        Ok(())
+    }
+
+    fn emit_key(&mut self, type_: ArrayState) -> Result<(), Error> {
+        self.array_type(type_);
+        let state = self.state.clone();
+        self._emit_key(&state)
+    }
+
+    // recursive implementation of `emit_key` above
+    fn _emit_key(&mut self, state: &State) -> Result<(), Error> {
+        match *state {
+            State::End => Ok(()),
+            State::Array {
+                parent,
+                first,
+                type_,
+                len,
+            } => {
+                assert!(type_.get().is_some());
+                if first.get() {
+                    self._emit_key(parent)?;
+                }
+                self.emit_array(first, len);
+                Ok(())
+            }
+            State::Table {
+                parent,
+                first,
+                table_emitted,
+                key,
+            } => {
+                if table_emitted.get() {
+                    return Err(Error::ValueAfterTable);
+                }
+                if first.get() {
+                    self.emit_table_header(parent)?;
+                    first.set(false);
+                }
+                self.escape_key(key)?;
+                self.dst.push_str(" = ");
+                Ok(())
+            }
+        }
+    }
+
+    fn emit_array(&mut self, first: &Cell<bool>, _len: Option<usize>) {
+        if first.get() {
+            self.dst.push('[');
+        } else {
+            self.dst.push_str(", ");
+        }
+    }
+
+    fn array_type(&mut self, type_: ArrayState) {
+        let prev = match self.state {
+            State::Array { type_, .. } => type_,
+            _ => return,
+        };
+        if prev.get().is_none() {
+            prev.set(Some(type_));
+        }
+    }
+
+    fn escape_key(&mut self, key: &str) -> Result<(), Error> {
+        let ok = !key.is_empty()
+            && key.chars().all(|c| match c {
+                'a'..='z' | 'A'..='Z' | '0'..='9' | '-' | '_' => true,
+                _ => false,
+            });
+        if ok {
+            write!(self.dst, "{}", key).map_err(ser::Error::custom)?;
+        } else {
+            self.emit_str(key)?;
+        }
+        Ok(())
+    }
+
+    fn emit_str(&mut self, value: &str) -> Result<(), Error> {
+        self.dst.push('"');
+        for ch in value.chars() {
+            match ch {
+                '\u{8}' => self.dst.push_str("\\b"),
+                '\u{9}' => self.dst.push_str("\\t"),
+                '\u{a}' => self.dst.push_str("\\n"),
+                '\u{c}' => self.dst.push_str("\\f"),
+                '\u{d}' => self.dst.push_str("\\r"),
+                '\u{22}' => self.dst.push_str("\\\""),
+                '\u{5c}' => self.dst.push_str("\\\\"),
+                c if c <= '\u{1f}' || c == '\u{7f}' => {
+                    write!(self.dst, "\\u{:04X}", ch as u32).map_err(ser::Error::custom)?;
+                }
+                ch => self.dst.push(ch),
+            }
+        }
+        self.dst.push('"');
+        Ok(())
+    }
+
+    fn emit_table_header(&mut self, state: &State) -> Result<(), Error> {
+        let array_of_tables = match *state {
+            State::End => return Ok(()),
+            State::Array { .. } => true,
+            State::Table { .. } => false,
+        };
+
+        // Unlike [..]s, we can't omit [[..]] ancestors, so be sure to emit
+        // table headers for them.
+        let mut p = state;
+        if let State::Array { first, parent, .. } = *state {
+            if first.get() {
+                p = parent;
+            }
+        }
+        while let State::Table { first, parent, .. } = *p {
+            p = parent;
+            if !first.get() {
+                break;
+            }
+            if let State::Array {
+                parent: &State::Table { .. },
+                ..
+            } = *parent
+            {
+                self.emit_table_header(parent)?;
+                break;
+            }
+        }
+
+        match *state {
+            State::Table { first, .. } => {
+                if !first.get() {
+                    // Newline if we are a table that is not the first table in
+                    // the document.
+                    self.dst.push('\n');
+                }
+            }
+            State::Array { parent, first, .. } => {
+                if !first.get() {
+                    // Always newline if we are not the first item in the
+                    // table-array
+                    self.dst.push('\n');
+                } else if let State::Table { first, .. } = *parent {
+                    if !first.get() {
+                        // Newline if we are not the first item in the document
+                        self.dst.push('\n');
+                    }
+                }
+            }
+            State::End => {}
+        }
+        self.dst.push('[');
+        if array_of_tables {
+            self.dst.push('[');
+        }
+        self.emit_key_part(state)?;
+        if array_of_tables {
+            self.dst.push(']');
+        }
+        self.dst.push_str("]\n");
+        Ok(())
+    }
+
+    fn emit_key_part(&mut self, key: &State) -> Result<bool, Error> {
+        match *key {
+            State::Array { parent, .. } => self.emit_key_part(parent),
+            State::End => Ok(true),
+            State::Table {
+                key,
+                parent,
+                table_emitted,
+                ..
+            } => {
+                table_emitted.set(true);
+                let first = self.emit_key_part(parent)?;
+                if !first {
+                    self.dst.push('.');
+                }
+                self.escape_key(key)?;
+                Ok(false)
+            }
+        }
+    }
+}
+
+macro_rules! serialize_float {
+    ($this:expr, $v:expr) => {{
+        $this.emit_key(ArrayState::Started)?;
+        match ($v.is_sign_negative(), $v.is_nan(), $v == 0.0) {
+            (true, true, _) => write!($this.dst, "-nan"),
+            (false, true, _) => write!($this.dst, "nan"),
+            (true, false, true) => write!($this.dst, "-0.0"),
+            (false, false, true) => write!($this.dst, "0.0"),
+            (_, false, false) => write!($this.dst, "{}", $v).and_then(|_| {
+                if $v % 1.0 == 0.0 {
+                    write!($this.dst, ".0")
+                } else {
+                    Ok(())
+                }
+            }),
+        }
+        .map_err(ser::Error::custom)?;
+
+        if let State::Table { .. } = $this.state {
+            $this.dst.push_str("\n");
+        }
+        return Ok(());
+    }};
+}
+
+impl<'a, 'b> ser::Serializer for &'b mut Serializer<'a> {
+    type Ok = ();
+    type Error = Error;
+    type SerializeSeq = SerializeSeq<'a, 'b>;
+    type SerializeTuple = SerializeSeq<'a, 'b>;
+    type SerializeTupleStruct = SerializeSeq<'a, 'b>;
+    type SerializeTupleVariant = ser::Impossible<(), Error>;
+    type SerializeMap = SerializeTable<'a, 'b>;
+    type SerializeStruct = SerializeTable<'a, 'b>;
+    type SerializeStructVariant = ser::Impossible<(), Error>;
+
+    fn serialize_bool(self, v: bool) -> Result<(), Self::Error> {
+        self.display(v, ArrayState::Started)
+    }
+
+    fn serialize_i8(self, v: i8) -> Result<(), Self::Error> {
+        self.display(v, ArrayState::Started)
+    }
+
+    fn serialize_i16(self, v: i16) -> Result<(), Self::Error> {
+        self.display(v, ArrayState::Started)
+    }
+
+    fn serialize_i32(self, v: i32) -> Result<(), Self::Error> {
+        self.display(v, ArrayState::Started)
+    }
+
+    fn serialize_i64(self, v: i64) -> Result<(), Self::Error> {
+        self.display(v, ArrayState::Started)
+    }
+
+    fn serialize_u8(self, v: u8) -> Result<(), Self::Error> {
+        self.display(v, ArrayState::Started)
+    }
+
+    fn serialize_u16(self, v: u16) -> Result<(), Self::Error> {
+        self.display(v, ArrayState::Started)
+    }
+
+    fn serialize_u32(self, v: u32) -> Result<(), Self::Error> {
+        self.display(v, ArrayState::Started)
+    }
+
+    fn serialize_u64(self, v: u64) -> Result<(), Self::Error> {
+        self.display(v, ArrayState::Started)
+    }
+
+    fn serialize_f32(self, v: f32) -> Result<(), Self::Error> {
+        serialize_float!(self, v)
+    }
+
+    fn serialize_f64(self, v: f64) -> Result<(), Self::Error> {
+        serialize_float!(self, v)
+    }
+
+    fn serialize_char(self, v: char) -> Result<(), Self::Error> {
+        let mut buf = [0; 4];
+        self.serialize_str(v.encode_utf8(&mut buf))
+    }
+
+    fn serialize_str(self, value: &str) -> Result<(), Self::Error> {
+        self.emit_key(ArrayState::Started)?;
+        self.emit_str(value)?;
+        if let State::Table { .. } = self.state {
+            self.dst.push('\n');
+        }
+        Ok(())
+    }
+
+    fn serialize_bytes(self, value: &[u8]) -> Result<(), Self::Error> {
+        value.serialize(self)
+    }
+
+    fn serialize_none(self) -> Result<(), Self::Error> {
+        Err(Error::UnsupportedNone)
+    }
+
+    fn serialize_some<T: ?Sized>(self, value: &T) -> Result<(), Self::Error>
+    where
+        T: Serialize,
+    {
+        value.serialize(self)
+    }
+
+    fn serialize_unit(self) -> Result<(), Self::Error> {
+        Err(Error::UnsupportedType)
+    }
+
+    fn serialize_unit_struct(self, _name: &'static str) -> Result<(), Self::Error> {
+        Err(Error::UnsupportedType)
+    }
+
+    fn serialize_unit_variant(
+        self,
+        _name: &'static str,
+        _variant_index: u32,
+        variant: &'static str,
+    ) -> Result<(), Self::Error> {
+        self.serialize_str(variant)
+    }
+
+    fn serialize_newtype_struct<T: ?Sized>(
+        self,
+        _name: &'static str,
+        value: &T,
+    ) -> Result<(), Self::Error>
+    where
+        T: Serialize,
+    {
+        value.serialize(self)
+    }
+
+    fn serialize_newtype_variant<T: ?Sized>(
+        self,
+        _name: &'static str,
+        _variant_index: u32,
+        _variant: &'static str,
+        _value: &T,
+    ) -> Result<(), Self::Error>
+    where
+        T: Serialize,
+    {
+        Err(Error::UnsupportedType)
+    }
+
+    fn serialize_seq(self, len: Option<usize>) -> Result<Self::SerializeSeq, Self::Error> {
+        self.array_type(ArrayState::Started);
+        Ok(SerializeSeq {
+            ser: self,
+            first: Cell::new(true),
+            type_: Cell::new(None),
+            len,
+        })
+    }
+
+    fn serialize_tuple(self, len: usize) -> Result<Self::SerializeTuple, Self::Error> {
+        self.serialize_seq(Some(len))
+    }
+
+    fn serialize_tuple_struct(
+        self,
+        _name: &'static str,
+        len: usize,
+    ) -> Result<Self::SerializeTupleStruct, Self::Error> {
+        self.serialize_seq(Some(len))
+    }
+
+    fn serialize_tuple_variant(
+        self,
+        _name: &'static str,
+        _variant_index: u32,
+        _variant: &'static str,
+        _len: usize,
+    ) -> Result<Self::SerializeTupleVariant, Self::Error> {
+        Err(Error::UnsupportedType)
+    }
+
+    fn serialize_map(self, _len: Option<usize>) -> Result<Self::SerializeMap, Self::Error> {
+        self.array_type(ArrayState::StartedAsATable);
+        Ok(SerializeTable {
+            ser: self,
+            key: String::new(),
+            first: Cell::new(true),
+            table_emitted: Cell::new(false),
+        })
+    }
+
+    fn serialize_struct(
+        self,
+        _name: &'static str,
+        _len: usize,
+    ) -> Result<Self::SerializeStruct, Self::Error> {
+        self.array_type(ArrayState::StartedAsATable);
+        Ok(SerializeTable {
+            ser: self,
+            key: String::new(),
+            first: Cell::new(true),
+            table_emitted: Cell::new(false),
+        })
+    }
+
+    fn serialize_struct_variant(
+        self,
+        _name: &'static str,
+        _variant_index: u32,
+        _variant: &'static str,
+        _len: usize,
+    ) -> Result<Self::SerializeStructVariant, Self::Error> {
+        Err(Error::UnsupportedType)
+    }
+}
+
+impl<'a, 'b> ser::SerializeSeq for SerializeSeq<'a, 'b> {
+    type Ok = ();
+    type Error = Error;
+
+    fn serialize_element<T: ?Sized>(&mut self, value: &T) -> Result<(), Error>
+    where
+        T: Serialize,
+    {
+        value.serialize(&mut Serializer {
+            dst: &mut *self.ser.dst,
+            state: State::Array {
+                parent: &self.ser.state,
+                first: &self.first,
+                type_: &self.type_,
+                len: self.len,
+            },
+        })?;
+        self.first.set(false);
+        Ok(())
+    }
+
+    fn end(self) -> Result<(), Error> {
+        match self.type_.get() {
+            Some(ArrayState::StartedAsATable) => return Ok(()),
+            Some(ArrayState::Started) => self.ser.dst.push(']'),
+            None => {
+                assert!(self.first.get());
+                self.ser.emit_key(ArrayState::Started)?;
+                self.ser.dst.push_str("[]");
+            }
+        }
+        if let State::Table { .. } = self.ser.state {
+            self.ser.dst.push('\n');
+        }
+        Ok(())
+    }
+}
+
+impl<'a, 'b> ser::SerializeTuple for SerializeSeq<'a, 'b> {
+    type Ok = ();
+    type Error = Error;
+
+    fn serialize_element<T: ?Sized>(&mut self, value: &T) -> Result<(), Error>
+    where
+        T: Serialize,
+    {
+        ser::SerializeSeq::serialize_element(self, value)
+    }
+
+    fn end(self) -> Result<(), Error> {
+        ser::SerializeSeq::end(self)
+    }
+}
+
+impl<'a, 'b> ser::SerializeTupleStruct for SerializeSeq<'a, 'b> {
+    type Ok = ();
+    type Error = Error;
+
+    fn serialize_field<T: ?Sized>(&mut self, value: &T) -> Result<(), Error>
+    where
+        T: Serialize,
+    {
+        ser::SerializeSeq::serialize_element(self, value)
+    }
+
+    fn end(self) -> Result<(), Error> {
+        ser::SerializeSeq::end(self)
+    }
+}
+
+impl<'a, 'b> ser::SerializeMap for SerializeTable<'a, 'b> {
+    type Ok = ();
+    type Error = Error;
+
+    fn serialize_key<T: ?Sized>(&mut self, input: &T) -> Result<(), Error>
+    where
+        T: Serialize,
+    {
+        self.key = input.serialize(StringExtractor)?;
+        Ok(())
+    }
+
+    fn serialize_value<T: ?Sized>(&mut self, value: &T) -> Result<(), Error>
+    where
+        T: Serialize,
+    {
+        let res = value.serialize(&mut Serializer {
+            dst: &mut *self.ser.dst,
+            state: State::Table {
+                key: &self.key,
+                parent: &self.ser.state,
+                first: &self.first,
+                table_emitted: &self.table_emitted,
+            },
+        });
+        match res {
+            Ok(()) => self.first.set(false),
+            Err(Error::UnsupportedNone) => {}
+            Err(e) => return Err(e),
+        }
+        Ok(())
+    }
+
+    fn end(self) -> Result<(), Error> {
+        if self.first.get() {
+            let state = self.ser.state.clone();
+            self.ser.emit_table_header(&state)?;
+        }
+        Ok(())
+    }
+}
+
+impl<'a, 'b> ser::SerializeStruct for SerializeTable<'a, 'b> {
+    type Ok = ();
+    type Error = Error;
+
+    fn serialize_field<T: ?Sized>(&mut self, key: &'static str, value: &T) -> Result<(), Error>
+    where
+        T: Serialize,
+    {
+        let res = value.serialize(&mut Serializer {
+            dst: &mut *self.ser.dst,
+            state: State::Table {
+                key,
+                parent: &self.ser.state,
+                first: &self.first,
+                table_emitted: &self.table_emitted,
+            },
+        });
+        match res {
+            Ok(()) => self.first.set(false),
+            Err(Error::UnsupportedNone) => {}
+            Err(e) => return Err(e),
+        }
+        Ok(())
+    }
+
+    fn end(self) -> Result<(), Error> {
+        if self.first.get() {
+            let state = self.ser.state.clone();
+            self.ser.emit_table_header(&state)?;
+        }
+        Ok(())
+    }
+}
+
+struct StringExtractor;
+
+impl ser::Serializer for StringExtractor {
+    type Ok = String;
+    type Error = Error;
+    type SerializeSeq = ser::Impossible<String, Error>;
+    type SerializeTuple = ser::Impossible<String, Error>;
+    type SerializeTupleStruct = ser::Impossible<String, Error>;
+    type SerializeTupleVariant = ser::Impossible<String, Error>;
+    type SerializeMap = ser::Impossible<String, Error>;
+    type SerializeStruct = ser::Impossible<String, Error>;
+    type SerializeStructVariant = ser::Impossible<String, Error>;
+
+    fn serialize_bool(self, _v: bool) -> Result<String, Self::Error> {
+        Err(Error::KeyNotString)
+    }
+
+    fn serialize_i8(self, _v: i8) -> Result<String, Self::Error> {
+        Err(Error::KeyNotString)
+    }
+
+    fn serialize_i16(self, _v: i16) -> Result<String, Self::Error> {
+        Err(Error::KeyNotString)
+    }
+
+    fn serialize_i32(self, _v: i32) -> Result<String, Self::Error> {
+        Err(Error::KeyNotString)
+    }
+
+    fn serialize_i64(self, _v: i64) -> Result<String, Self::Error> {
+        Err(Error::KeyNotString)
+    }
+
+    fn serialize_u8(self, _v: u8) -> Result<String, Self::Error> {
+        Err(Error::KeyNotString)
+    }
+
+    fn serialize_u16(self, _v: u16) -> Result<String, Self::Error> {
+        Err(Error::KeyNotString)
+    }
+
+    fn serialize_u32(self, _v: u32) -> Result<String, Self::Error> {
+        Err(Error::KeyNotString)
+    }
+
+    fn serialize_u64(self, _v: u64) -> Result<String, Self::Error> {
+        Err(Error::KeyNotString)
+    }
+
+    fn serialize_f32(self, _v: f32) -> Result<String, Self::Error> {
+        Err(Error::KeyNotString)
+    }
+
+    fn serialize_f64(self, _v: f64) -> Result<String, Self::Error> {
+        Err(Error::KeyNotString)
+    }
+
+    fn serialize_char(self, _v: char) -> Result<String, Self::Error> {
+        Err(Error::KeyNotString)
+    }
+
+    fn serialize_str(self, value: &str) -> Result<String, Self::Error> {
+        Ok(value.to_string())
+    }
+
+    fn serialize_bytes(self, _value: &[u8]) -> Result<String, Self::Error> {
+        Err(Error::KeyNotString)
+    }
+
+    fn serialize_none(self) -> Result<String, Self::Error> {
+        Err(Error::KeyNotString)
+    }
+
+    fn serialize_some<T: ?Sized>(self, _value: &T) -> Result<String, Self::Error>
+    where
+        T: Serialize,
+    {
+        Err(Error::KeyNotString)
+    }
+
+    fn serialize_unit(self) -> Result<String, Self::Error> {
+        Err(Error::KeyNotString)
+    }
+
+    fn serialize_unit_struct(self, _name: &'static str) -> Result<String, Self::Error> {
+        Err(Error::KeyNotString)
+    }
+
+    fn serialize_unit_variant(
+        self,
+        _name: &'static str,
+        _variant_index: u32,
+        _variant: &'static str,
+    ) -> Result<String, Self::Error> {
+        Err(Error::KeyNotString)
+    }
+
+    fn serialize_newtype_struct<T: ?Sized>(
+        self,
+        _name: &'static str,
+        value: &T,
+    ) -> Result<String, Self::Error>
+    where
+        T: Serialize,
+    {
+        value.serialize(self)
+    }
+
+    fn serialize_newtype_variant<T: ?Sized>(
+        self,
+        _name: &'static str,
+        _variant_index: u32,
+        _variant: &'static str,
+        _value: &T,
+    ) -> Result<String, Self::Error>
+    where
+        T: Serialize,
+    {
+        Err(Error::KeyNotString)
+    }
+
+    fn serialize_seq(self, _len: Option<usize>) -> Result<Self::SerializeSeq, Self::Error> {
+        Err(Error::KeyNotString)
+    }
+
+    fn serialize_tuple(self, _len: usize) -> Result<Self::SerializeTuple, Self::Error> {
+        Err(Error::KeyNotString)
+    }
+
+    fn serialize_tuple_struct(
+        self,
+        _name: &'static str,
+        _len: usize,
+    ) -> Result<Self::SerializeTupleStruct, Self::Error> {
+        Err(Error::KeyNotString)
+    }
+
+    fn serialize_tuple_variant(
+        self,
+        _name: &'static str,
+        _variant_index: u32,
+        _variant: &'static str,
+        _len: usize,
+    ) -> Result<Self::SerializeTupleVariant, Self::Error> {
+        Err(Error::KeyNotString)
+    }
+
+    fn serialize_map(self, _len: Option<usize>) -> Result<Self::SerializeMap, Self::Error> {
+        Err(Error::KeyNotString)
+    }
+
+    fn serialize_struct(
+        self,
+        _name: &'static str,
+        _len: usize,
+    ) -> Result<Self::SerializeStruct, Self::Error> {
+        Err(Error::KeyNotString)
+    }
+
+    fn serialize_struct_variant(
+        self,
+        _name: &'static str,
+        _variant_index: u32,
+        _variant: &'static str,
+        _len: usize,
+    ) -> Result<Self::SerializeStructVariant, Self::Error> {
+        Err(Error::KeyNotString)
+    }
+}
+
+impl Display for Error {
+    fn fmt(&self, f: &mut fmt::Formatter) -> fmt::Result {
+        match *self {
+            Error::UnsupportedType => "unsupported Rust type".fmt(f),
+            Error::KeyNotString => "map key was not a string".fmt(f),
+            Error::ValueAfterTable => "values must be emitted before tables".fmt(f),
+            Error::UnsupportedNone => "unsupported None value".fmt(f),
+            Error::Custom(ref s) => s.fmt(f),
+        }
+    }
+}
+
+impl error::Error for Error {}
+
+impl ser::Error for Error {
+    fn custom<T: Display>(msg: T) -> Error {
+        Error::Custom(msg.to_string())
+    }
+}
diff --git a/vendor/basic-toml/src/tokens.rs b/vendor/basic-toml/src/tokens.rs
new file mode 100644
index 000000000..22aebc65b
--- /dev/null
+++ b/vendor/basic-toml/src/tokens.rs
@@ -0,0 +1,546 @@
+use std::borrow::Cow;
+use std::char;
+use std::str;
+
+/// A span, designating a range of bytes where a token is located.
+#[derive(Eq, PartialEq, Debug, Clone, Copy)]
+pub struct Span {
+    /// The start of the range.
+    pub start: usize,
+    /// The end of the range (exclusive).
+    pub end: usize,
+}
+
+impl From<Span> for (usize, usize) {
+    fn from(Span { start, end }: Span) -> (usize, usize) {
+        (start, end)
+    }
+}
+
+#[derive(Eq, PartialEq, Debug)]
+pub enum Token<'a> {
+    Whitespace(&'a str),
+    Newline,
+    Comment(&'a str),
+
+    Equals,
+    Period,
+    Comma,
+    Colon,
+    Plus,
+    LeftBrace,
+    RightBrace,
+    LeftBracket,
+    RightBracket,
+
+    Keylike(&'a str),
+    String {
+        src: &'a str,
+        val: Cow<'a, str>,
+        multiline: bool,
+    },
+}
+
+#[derive(Eq, PartialEq, Debug)]
+pub enum Error {
+    InvalidCharInString(usize, char),
+    InvalidEscape(usize, char),
+    InvalidHexEscape(usize, char),
+    InvalidEscapeValue(usize, u32),
+    NewlineInString(usize),
+    Unexpected(usize, char),
+    UnterminatedString(usize),
+    NewlineInTableKey(usize),
+    MultilineStringKey(usize),
+    Wanted {
+        at: usize,
+        expected: &'static str,
+        found: &'static str,
+    },
+}
+
+#[derive(Clone)]
+pub struct Tokenizer<'a> {
+    input: &'a str,
+    chars: CrlfFold<'a>,
+}
+
+#[derive(Clone)]
+struct CrlfFold<'a> {
+    chars: str::CharIndices<'a>,
+}
+
+#[derive(Debug)]
+enum MaybeString {
+    NotEscaped(usize),
+    Owned(String),
+}
+
+impl<'a> Tokenizer<'a> {
+    pub fn new(input: &'a str) -> Tokenizer<'a> {
+        let mut t = Tokenizer {
+            input,
+            chars: CrlfFold {
+                chars: input.char_indices(),
+            },
+        };
+        // Eat utf-8 BOM
+        t.eatc('\u{feff}');
+        t
+    }
+
+    pub fn next(&mut self) -> Result<Option<(Span, Token<'a>)>, Error> {
+        let (start, token) = match self.one() {
+            Some((start, '\n')) => (start, Token::Newline),
+            Some((start, ' ' | '\t')) => (start, self.whitespace_token(start)),
+            Some((start, '#')) => (start, self.comment_token(start)),
+            Some((start, '=')) => (start, Token::Equals),
+            Some((start, '.')) => (start, Token::Period),
+            Some((start, ',')) => (start, Token::Comma),
+            Some((start, ':')) => (start, Token::Colon),
+            Some((start, '+')) => (start, Token::Plus),
+            Some((start, '{')) => (start, Token::LeftBrace),
+            Some((start, '}')) => (start, Token::RightBrace),
+            Some((start, '[')) => (start, Token::LeftBracket),
+            Some((start, ']')) => (start, Token::RightBracket),
+            Some((start, '\'')) => {
+                return self
+                    .literal_string(start)
+                    .map(|t| Some((self.step_span(start), t)))
+            }
+            Some((start, '"')) => {
+                return self
+                    .basic_string(start)
+                    .map(|t| Some((self.step_span(start), t)))
+            }
+            Some((start, ch)) if is_keylike(ch) => (start, self.keylike(start)),
+
+            Some((start, ch)) => return Err(Error::Unexpected(start, ch)),
+            None => return Ok(None),
+        };
+
+        let span = self.step_span(start);
+        Ok(Some((span, token)))
+    }
+
+    pub fn peek(&mut self) -> Result<Option<(Span, Token<'a>)>, Error> {
+        self.clone().next()
+    }
+
+    pub fn eat(&mut self, expected: Token<'a>) -> Result<bool, Error> {
+        self.eat_spanned(expected).map(|s| s.is_some())
+    }
+
+    /// Eat a value, returning it's span if it was consumed.
+    pub fn eat_spanned(&mut self, expected: Token<'a>) -> Result<Option<Span>, Error> {
+        let span = match self.peek()? {
+            Some((span, ref found)) if expected == *found => span,
+            Some(_) | None => return Ok(None),
+        };
+
+        drop(self.next());
+        Ok(Some(span))
+    }
+
+    pub fn expect(&mut self, expected: Token<'a>) -> Result<(), Error> {
+        // ignore span
+        let _ = self.expect_spanned(expected)?;
+        Ok(())
+    }
+
+    /// Expect the given token returning its span.
+    pub fn expect_spanned(&mut self, expected: Token<'a>) -> Result<Span, Error> {
+        let current = self.current();
+        match self.next()? {
+            Some((span, found)) => {
+                if expected == found {
+                    Ok(span)
+                } else {
+                    Err(Error::Wanted {
+                        at: current,
+                        expected: expected.describe(),
+                        found: found.describe(),
+                    })
+                }
+            }
+            None => Err(Error::Wanted {
+                at: self.input.len(),
+                expected: expected.describe(),
+                found: "eof",
+            }),
+        }
+    }
+
+    pub fn table_key(&mut self) -> Result<(Span, Cow<'a, str>), Error> {
+        let current = self.current();
+        match self.next()? {
+            Some((span, Token::Keylike(k))) => Ok((span, k.into())),
+            Some((
+                span,
+                Token::String {
+                    src,
+                    val,
+                    multiline,
+                },
+            )) => {
+                let offset = self.substr_offset(src);
+                if multiline {
+                    return Err(Error::MultilineStringKey(offset));
+                }
+                match src.find('\n') {
+                    None => Ok((span, val)),
+                    Some(i) => Err(Error::NewlineInTableKey(offset + i)),
+                }
+            }
+            Some((_, other)) => Err(Error::Wanted {
+                at: current,
+                expected: "a table key",
+                found: other.describe(),
+            }),
+            None => Err(Error::Wanted {
+                at: self.input.len(),
+                expected: "a table key",
+                found: "eof",
+            }),
+        }
+    }
+
+    pub fn eat_whitespace(&mut self) {
+        while self.eatc(' ') || self.eatc('\t') {
+            // ...
+        }
+    }
+
+    pub fn eat_comment(&mut self) -> Result<bool, Error> {
+        if !self.eatc('#') {
+            return Ok(false);
+        }
+        drop(self.comment_token(0));
+        self.eat_newline_or_eof().map(|()| true)
+    }
+
+    pub fn eat_newline_or_eof(&mut self) -> Result<(), Error> {
+        let current = self.current();
+        match self.next()? {
+            None | Some((_, Token::Newline)) => Ok(()),
+            Some((_, other)) => Err(Error::Wanted {
+                at: current,
+                expected: "newline",
+                found: other.describe(),
+            }),
+        }
+    }
+
+    pub fn skip_to_newline(&mut self) {
+        loop {
+            match self.one() {
+                Some((_, '\n')) | None => break,
+                _ => {}
+            }
+        }
+    }
+
+    fn eatc(&mut self, ch: char) -> bool {
+        match self.chars.clone().next() {
+            Some((_, ch2)) if ch == ch2 => {
+                self.one();
+                true
+            }
+            _ => false,
+        }
+    }
+
+    pub fn current(&mut self) -> usize {
+        match self.chars.clone().next() {
+            Some(i) => i.0,
+            None => self.input.len(),
+        }
+    }
+
+    fn whitespace_token(&mut self, start: usize) -> Token<'a> {
+        while self.eatc(' ') || self.eatc('\t') {
+            // ...
+        }
+        Token::Whitespace(&self.input[start..self.current()])
+    }
+
+    fn comment_token(&mut self, start: usize) -> Token<'a> {
+        while let Some((_, ch)) = self.chars.clone().next() {
+            if ch != '\t' && (ch < '\u{20}' || ch > '\u{10ffff}') {
+                break;
+            }
+            self.one();
+        }
+        Token::Comment(&self.input[start..self.current()])
+    }
+
+    fn read_string(
+        &mut self,
+        delim: char,
+        start: usize,
+        new_ch: &mut dyn FnMut(
+            &mut Tokenizer,
+            &mut MaybeString,
+            bool,
+            usize,
+            char,
+        ) -> Result<(), Error>,
+    ) -> Result<Token<'a>, Error> {
+        let mut multiline = false;
+        if self.eatc(delim) {
+            if self.eatc(delim) {
+                multiline = true;
+            } else {
+                return Ok(Token::String {
+                    src: &self.input[start..start + 2],
+                    val: Cow::Borrowed(""),
+                    multiline: false,
+                });
+            }
+        }
+        let mut val = MaybeString::NotEscaped(self.current());
+        let mut n = 0;
+        loop {
+            n += 1;
+            match self.one() {
+                Some((i, '\n')) => {
+                    if multiline {
+                        if self.input.as_bytes()[i] == b'\r' {
+                            val.make_owned(&self.input[..i]);
+                        }
+                        if n == 1 {
+                            val = MaybeString::NotEscaped(self.current());
+                        } else {
+                            val.push('\n');
+                        }
+                    } else {
+                        return Err(Error::NewlineInString(i));
+                    }
+                }
+                Some((mut i, ch)) if ch == delim => {
+                    if multiline {
+                        if !self.eatc(delim) {
+                            val.push(delim);
+                            continue;
+                        }
+                        if !self.eatc(delim) {
+                            val.push(delim);
+                            val.push(delim);
+                            continue;
+                        }
+                        if self.eatc(delim) {
+                            val.push(delim);
+                            i += 1;
+                        }
+                        if self.eatc(delim) {
+                            val.push(delim);
+                            i += 1;
+                        }
+                    }
+                    return Ok(Token::String {
+                        src: &self.input[start..self.current()],
+                        val: val.into_cow(&self.input[..i]),
+                        multiline,
+                    });
+                }
+                Some((i, c)) => new_ch(self, &mut val, multiline, i, c)?,
+                None => return Err(Error::UnterminatedString(start)),
+            }
+        }
+    }
+
+    fn literal_string(&mut self, start: usize) -> Result<Token<'a>, Error> {
+        self.read_string('\'', start, &mut |_me, val, _multi, i, ch| {
+            if ch == '\u{09}' || ('\u{20}' <= ch && ch <= '\u{10ffff}' && ch != '\u{7f}') {
+                val.push(ch);
+                Ok(())
+            } else {
+                Err(Error::InvalidCharInString(i, ch))
+            }
+        })
+    }
+
+    fn basic_string(&mut self, start: usize) -> Result<Token<'a>, Error> {
+        self.read_string('"', start, &mut |me, val, multi, i, ch| match ch {
+            '\\' => {
+                val.make_owned(&me.input[..i]);
+                match me.chars.next() {
+                    Some((_, '"')) => val.push('"'),
+                    Some((_, '\\')) => val.push('\\'),
+                    Some((_, 'b')) => val.push('\u{8}'),
+                    Some((_, 'f')) => val.push('\u{c}'),
+                    Some((_, 'n')) => val.push('\n'),
+                    Some((_, 'r')) => val.push('\r'),
+                    Some((_, 't')) => val.push('\t'),
+                    Some((i, c @ ('u' | 'U'))) => {
+                        let len = if c == 'u' { 4 } else { 8 };
+                        val.push(me.hex(start, i, len)?);
+                    }
+                    Some((i, c @ (' ' | '\t' | '\n'))) if multi => {
+                        if c != '\n' {
+                            while let Some((_, ch)) = me.chars.clone().next() {
+                                match ch {
+                                    ' ' | '\t' => {
+                                        me.chars.next();
+                                        continue;
+                                    }
+                                    '\n' => {
+                                        me.chars.next();
+                                        break;
+                                    }
+                                    _ => return Err(Error::InvalidEscape(i, c)),
+                                }
+                            }
+                        }
+                        while let Some((_, ch)) = me.chars.clone().next() {
+                            match ch {
+                                ' ' | '\t' | '\n' => {
+                                    me.chars.next();
+                                }
+                                _ => break,
+                            }
+                        }
+                    }
+                    Some((i, c)) => return Err(Error::InvalidEscape(i, c)),
+                    None => return Err(Error::UnterminatedString(start)),
+                }
+                Ok(())
+            }
+            ch if ch == '\u{09}' || ('\u{20}' <= ch && ch <= '\u{10ffff}' && ch != '\u{7f}') => {
+                val.push(ch);
+                Ok(())
+            }
+            _ => Err(Error::InvalidCharInString(i, ch)),
+        })
+    }
+
+    fn hex(&mut self, start: usize, i: usize, len: usize) -> Result<char, Error> {
+        let mut buf = String::with_capacity(len);
+        for _ in 0..len {
+            match self.one() {
+                Some((_, ch)) if ch as u32 <= 0x7F && ch.is_ascii_hexdigit() => buf.push(ch),
+                Some((i, ch)) => return Err(Error::InvalidHexEscape(i, ch)),
+                None => return Err(Error::UnterminatedString(start)),
+            }
+        }
+        let val = u32::from_str_radix(&buf, 16).unwrap();
+        match char::from_u32(val) {
+            Some(ch) => Ok(ch),
+            None => Err(Error::InvalidEscapeValue(i, val)),
+        }
+    }
+
+    fn keylike(&mut self, start: usize) -> Token<'a> {
+        while let Some((_, ch)) = self.peek_one() {
+            if !is_keylike(ch) {
+                break;
+            }
+            self.one();
+        }
+        Token::Keylike(&self.input[start..self.current()])
+    }
+
+    pub fn substr_offset(&self, s: &'a str) -> usize {
+        assert!(s.len() <= self.input.len());
+        let a = self.input.as_ptr() as usize;
+        let b = s.as_ptr() as usize;
+        assert!(a <= b);
+        b - a
+    }
+
+    /// Calculate the span of a single character.
+    fn step_span(&mut self, start: usize) -> Span {
+        let end = match self.peek_one() {
+            Some(t) => t.0,
+            None => self.input.len(),
+        };
+        Span { start, end }
+    }
+
+    /// Peek one char without consuming it.
+    fn peek_one(&mut self) -> Option<(usize, char)> {
+        self.chars.clone().next()
+    }
+
+    /// Take one char.
+    pub fn one(&mut self) -> Option<(usize, char)> {
+        self.chars.next()
+    }
+}
+
+impl<'a> Iterator for CrlfFold<'a> {
+    type Item = (usize, char);
+
+    fn next(&mut self) -> Option<(usize, char)> {
+        self.chars.next().map(|(i, c)| {
+            if c == '\r' {
+                let mut attempt = self.chars.clone();
+                if let Some((_, '\n')) = attempt.next() {
+                    self.chars = attempt;
+                    return (i, '\n');
+                }
+            }
+            (i, c)
+        })
+    }
+}
+
+impl MaybeString {
+    fn push(&mut self, ch: char) {
+        match *self {
+            MaybeString::NotEscaped(..) => {}
+            MaybeString::Owned(ref mut s) => s.push(ch),
+        }
+    }
+
+    fn make_owned(&mut self, input: &str) {
+        match *self {
+            MaybeString::NotEscaped(start) => {
+                *self = MaybeString::Owned(input[start..].to_owned());
+            }
+            MaybeString::Owned(..) => {}
+        }
+    }
+
+    fn into_cow(self, input: &str) -> Cow<str> {
+        match self {
+            MaybeString::NotEscaped(start) => Cow::Borrowed(&input[start..]),
+            MaybeString::Owned(s) => Cow::Owned(s),
+        }
+    }
+}
+
+fn is_keylike(ch: char) -> bool {
+    ('A' <= ch && ch <= 'Z')
+        || ('a' <= ch && ch <= 'z')
+        || ('0' <= ch && ch <= '9')
+        || ch == '-'
+        || ch == '_'
+}
+
+impl<'a> Token<'a> {
+    pub fn describe(&self) -> &'static str {
+        match *self {
+            Token::Keylike(_) => "an identifier",
+            Token::Equals => "an equals",
+            Token::Period => "a period",
+            Token::Comment(_) => "a comment",
+            Token::Newline => "a newline",
+            Token::Whitespace(_) => "whitespace",
+            Token::Comma => "a comma",
+            Token::RightBrace => "a right brace",
+            Token::LeftBrace => "a left brace",
+            Token::RightBracket => "a right bracket",
+            Token::LeftBracket => "a left bracket",
+            Token::String { multiline, .. } => {
+                if multiline {
+                    "a multiline string"
+                } else {
+                    "a string"
+                }
+            }
+            Token::Colon => "a colon",
+            Token::Plus => "a plus",
+        }
+    }
+}
diff --git a/vendor/basic-toml/tests/README.md b/vendor/basic-toml/tests/README.md
new file mode 100644
index 000000000..ebbc01ccf
--- /dev/null
+++ b/vendor/basic-toml/tests/README.md
@@ -0,0 +1 @@
+Tests are from https://github.com/BurntSushi/toml-test
diff --git a/vendor/basic-toml/tests/datetime.rs b/vendor/basic-toml/tests/datetime.rs
new file mode 100644
index 000000000..0672a3ba7
--- /dev/null
+++ b/vendor/basic-toml/tests/datetime.rs
@@ -0,0 +1,142 @@
+use serde_json::Value;
+
+macro_rules! bad {
+    ($toml:expr, $msg:expr) => {
+        match basic_toml::from_str::<Value>($toml) {
+            Ok(s) => panic!("parsed to: {:#?}", s),
+            Err(e) => assert_eq!(e.to_string(), $msg),
+        }
+    };
+}
+
+#[test]
+fn times() {
+    fn multi_bad(s: &str, msg: &str) {
+        bad!(s, msg);
+        bad!(&s.replace('T', " "), msg);
+        bad!(&s.replace('T', "t"), msg);
+        bad!(&s.replace('Z', "z"), msg);
+    }
+
+    multi_bad(
+        "foo = 1997-09-09T09:09:09Z",
+        "invalid number at line 1 column 7",
+    );
+    multi_bad(
+        "foo = 1997-09-09T09:09:09+09:09",
+        "invalid number at line 1 column 7",
+    );
+    multi_bad(
+        "foo = 1997-09-09T09:09:09-09:09",
+        "invalid number at line 1 column 7",
+    );
+    multi_bad(
+        "foo = 1997-09-09T09:09:09",
+        "invalid number at line 1 column 7",
+    );
+    multi_bad("foo = 1997-09-09", "invalid number at line 1 column 7");
+    bad!("foo = 1997-09-09 ", "invalid number at line 1 column 7");
+    bad!(
+        "foo = 1997-09-09 # comment",
+        "invalid number at line 1 column 7"
+    );
+    multi_bad("foo = 09:09:09", "invalid number at line 1 column 8");
+    multi_bad(
+        "foo = 1997-09-09T09:09:09.09Z",
+        "invalid number at line 1 column 7",
+    );
+    multi_bad(
+        "foo = 1997-09-09T09:09:09.09+09:09",
+        "invalid number at line 1 column 7",
+    );
+    multi_bad(
+        "foo = 1997-09-09T09:09:09.09-09:09",
+        "invalid number at line 1 column 7",
+    );
+    multi_bad(
+        "foo = 1997-09-09T09:09:09.09",
+        "invalid number at line 1 column 7",
+    );
+    multi_bad("foo = 09:09:09.09", "invalid number at line 1 column 8");
+}
+
+#[test]
+fn bad_times() {
+    bad!("foo = 199-09-09", "invalid number at line 1 column 7");
+    bad!("foo = 199709-09", "invalid number at line 1 column 7");
+    bad!("foo = 1997-9-09", "invalid number at line 1 column 7");
+    bad!("foo = 1997-09-9", "invalid number at line 1 column 7");
+    bad!(
+        "foo = 1997-09-0909:09:09",
+        "invalid number at line 1 column 7"
+    );
+    bad!(
+        "foo = 1997-09-09T09:09:09.",
+        "invalid number at line 1 column 7"
+    );
+    bad!(
+        "foo = T",
+        "invalid TOML value, did you mean to use a quoted string? at line 1 column 7"
+    );
+    bad!(
+        "foo = T.",
+        "invalid TOML value, did you mean to use a quoted string? at line 1 column 7"
+    );
+    bad!(
+        "foo = TZ",
+        "invalid TOML value, did you mean to use a quoted string? at line 1 column 7"
+    );
+    bad!(
+        "foo = 1997-09-09T09:09:09.09+",
+        "invalid number at line 1 column 7"
+    );
+    bad!(
+        "foo = 1997-09-09T09:09:09.09+09",
+        "invalid number at line 1 column 7"
+    );
+    bad!(
+        "foo = 1997-09-09T09:09:09.09+09:9",
+        "invalid number at line 1 column 7"
+    );
+    bad!(
+        "foo = 1997-09-09T09:09:09.09+0909",
+        "invalid number at line 1 column 7"
+    );
+    bad!(
+        "foo = 1997-09-09T09:09:09.09-",
+        "invalid number at line 1 column 7"
+    );
+    bad!(
+        "foo = 1997-09-09T09:09:09.09-09",
+        "invalid number at line 1 column 7"
+    );
+    bad!(
+        "foo = 1997-09-09T09:09:09.09-09:9",
+        "invalid number at line 1 column 7"
+    );
+    bad!(
+        "foo = 1997-09-09T09:09:09.09-0909",
+        "invalid number at line 1 column 7"
+    );
+
+    bad!(
+        "foo = 1997-00-09T09:09:09.09Z",
+        "invalid number at line 1 column 7"
+    );
+    bad!(
+        "foo = 1997-09-00T09:09:09.09Z",
+        "invalid number at line 1 column 7"
+    );
+    bad!(
+        "foo = 1997-09-09T30:09:09.09Z",
+        "invalid number at line 1 column 7"
+    );
+    bad!(
+        "foo = 1997-09-09T12:69:09.09Z",
+        "invalid number at line 1 column 7"
+    );
+    bad!(
+        "foo = 1997-09-09T12:09:69.09Z",
+        "invalid number at line 1 column 7"
+    );
+}
diff --git a/vendor/basic-toml/tests/de-errors.rs b/vendor/basic-toml/tests/de-errors.rs
new file mode 100644
index 000000000..aac0c432e
--- /dev/null
+++ b/vendor/basic-toml/tests/de-errors.rs
@@ -0,0 +1,350 @@
+#![allow(clippy::too_many_lines)]
+
+use serde::{de, Deserialize};
+use std::fmt;
+
+macro_rules! bad {
+    ($toml:expr, $ty:ty, $msg:expr) => {
+        match basic_toml::from_str::<$ty>($toml) {
+            Ok(s) => panic!("parsed to: {:#?}", s),
+            Err(e) => assert_eq!(e.to_string(), $msg),
+        }
+    };
+}
+
+#[derive(Debug, Deserialize, PartialEq)]
+struct Parent<T> {
+    p_a: T,
+    p_b: Vec<Child<T>>,
+}
+
+#[derive(Debug, Deserialize, PartialEq)]
+#[serde(deny_unknown_fields)]
+struct Child<T> {
+    c_a: T,
+    c_b: T,
+}
+
+#[derive(Debug, PartialEq)]
+enum CasedString {
+    Lowercase(String),
+    Uppercase(String),
+}
+
+impl<'de> de::Deserialize<'de> for CasedString {
+    fn deserialize<D>(deserializer: D) -> Result<Self, D::Error>
+    where
+        D: de::Deserializer<'de>,
+    {
+        struct CasedStringVisitor;
+
+        impl<'de> de::Visitor<'de> for CasedStringVisitor {
+            type Value = CasedString;
+
+            fn expecting(&self, formatter: &mut fmt::Formatter) -> fmt::Result {
+                formatter.write_str("a string")
+            }
+
+            fn visit_str<E>(self, s: &str) -> Result<Self::Value, E>
+            where
+                E: de::Error,
+            {
+                if s.is_empty() {
+                    Err(de::Error::invalid_length(0, &"a non-empty string"))
+                } else if s.chars().all(|x| x.is_ascii_lowercase()) {
+                    Ok(CasedString::Lowercase(s.to_string()))
+                } else if s.chars().all(|x| x.is_ascii_uppercase()) {
+                    Ok(CasedString::Uppercase(s.to_string()))
+                } else {
+                    Err(de::Error::invalid_value(
+                        de::Unexpected::Str(s),
+                        &"all lowercase or all uppercase",
+                    ))
+                }
+            }
+        }
+
+        deserializer.deserialize_any(CasedStringVisitor)
+    }
+}
+
+#[test]
+fn custom_errors() {
+    basic_toml::from_str::<Parent<CasedString>>(
+        "
+            p_a = 'a'
+            p_b = [{c_a = 'a', c_b = 'c'}]
+        ",
+    )
+    .unwrap();
+
+    // Custom error at p_b value.
+    bad!(
+        "
+            p_a = ''
+                # ^
+        ",
+        Parent<CasedString>,
+        "invalid length 0, expected a non-empty string for key `p_a` at line 2 column 19"
+    );
+
+    // Missing field in table.
+    bad!(
+        "
+            p_a = 'a'
+          # ^
+        ",
+        Parent<CasedString>,
+        "missing field `p_b` at line 1 column 1"
+    );
+
+    // Invalid type in p_b.
+    bad!(
+        "
+            p_a = 'a'
+            p_b = 1
+                # ^
+        ",
+        Parent<CasedString>,
+        "invalid type: integer `1`, expected a sequence for key `p_b` at line 3 column 19"
+    );
+
+    // Sub-table in Vec is missing a field.
+    bad!(
+        "
+            p_a = 'a'
+            p_b = [
+                {c_a = 'a'}
+              # ^
+            ]
+        ",
+        Parent<CasedString>,
+        "missing field `c_b` for key `p_b` at line 4 column 17"
+    );
+
+    // Sub-table in Vec has a field with a bad value.
+    bad!(
+        "
+            p_a = 'a'
+            p_b = [
+                {c_a = 'a', c_b = '*'}
+                                # ^
+            ]
+        ",
+        Parent<CasedString>,
+        "invalid value: string \"*\", expected all lowercase or all uppercase for key `p_b` at line 4 column 35"
+    );
+
+    // Sub-table in Vec is missing a field.
+    bad!(
+        "
+            p_a = 'a'
+            p_b = [
+                {c_a = 'a', c_b = 'b'},
+                {c_a = 'aa'}
+              # ^
+            ]
+        ",
+        Parent<CasedString>,
+        "missing field `c_b` for key `p_b` at line 5 column 17"
+    );
+
+    // Sub-table in the middle of a Vec is missing a field.
+    bad!(
+        "
+            p_a = 'a'
+            p_b = [
+                {c_a = 'a', c_b = 'b'},
+                {c_a = 'aa'},
+              # ^
+                {c_a = 'aaa', c_b = 'bbb'},
+            ]
+        ",
+        Parent<CasedString>,
+        "missing field `c_b` for key `p_b` at line 5 column 17"
+    );
+
+    // Sub-table in the middle of a Vec has a field with a bad value.
+    bad!(
+        "
+            p_a = 'a'
+            p_b = [
+                {c_a = 'a', c_b = 'b'},
+                {c_a = 'aa', c_b = 1},
+                                 # ^
+                {c_a = 'aaa', c_b = 'bbb'},
+            ]
+        ",
+        Parent<CasedString>,
+        "invalid type: integer `1`, expected a string for key `p_b` at line 5 column 36"
+    );
+
+    // Sub-table in the middle of a Vec has an extra field.
+    // FIXME: This location could be better.
+    bad!(
+        "
+            p_a = 'a'
+            p_b = [
+                {c_a = 'a', c_b = 'b'},
+                {c_a = 'aa', c_b = 'bb', c_d = 'd'},
+              # ^
+                {c_a = 'aaa', c_b = 'bbb'},
+                {c_a = 'aaaa', c_b = 'bbbb'},
+            ]
+        ",
+        Parent<CasedString>,
+        "unknown field `c_d`, expected `c_a` or `c_b` for key `p_b` at line 5 column 17"
+    );
+
+    // Sub-table in the middle of a Vec is missing a field.
+    // FIXME: This location is pretty off.
+    bad!(
+        "
+            p_a = 'a'
+            [[p_b]]
+            c_a = 'a'
+            c_b = 'b'
+            [[p_b]]
+            c_a = 'aa'
+            # c_b = 'bb' # <- missing field
+            [[p_b]]
+            c_a = 'aaa'
+            c_b = 'bbb'
+            [[p_b]]
+          # ^
+            c_a = 'aaaa'
+            c_b = 'bbbb'
+        ",
+        Parent<CasedString>,
+        "missing field `c_b` for key `p_b` at line 12 column 13"
+    );
+
+    // Sub-table in the middle of a Vec has a field with a bad value.
+    bad!(
+        "
+            p_a = 'a'
+            [[p_b]]
+            c_a = 'a'
+            c_b = 'b'
+            [[p_b]]
+            c_a = 'aa'
+            c_b = '*'
+                # ^
+            [[p_b]]
+            c_a = 'aaa'
+            c_b = 'bbb'
+        ",
+        Parent<CasedString>,
+        "invalid value: string \"*\", expected all lowercase or all uppercase for key `p_b.c_b` at line 8 column 19"
+    );
+
+    // Sub-table in the middle of a Vec has an extra field.
+    // FIXME: This location is pretty off.
+    bad!(
+        "
+            p_a = 'a'
+            [[p_b]]
+            c_a = 'a'
+            c_b = 'b'
+            [[p_b]]
+            c_a = 'aa'
+            c_d = 'dd' # unknown field
+            [[p_b]]
+            c_a = 'aaa'
+            c_b = 'bbb'
+            [[p_b]]
+          # ^
+            c_a = 'aaaa'
+            c_b = 'bbbb'
+        ",
+        Parent<CasedString>,
+        "unknown field `c_d`, expected `c_a` or `c_b` for key `p_b` at line 12 column 13"
+    );
+}
+
+#[test]
+fn serde_derive_deserialize_errors() {
+    bad!(
+        "
+            p_a = ''
+          # ^
+        ",
+        Parent<String>,
+        "missing field `p_b` at line 1 column 1"
+    );
+
+    bad!(
+        "
+            p_a = ''
+            p_b = [
+                {c_a = ''}
+              # ^
+            ]
+        ",
+        Parent<String>,
+        "missing field `c_b` for key `p_b` at line 4 column 17"
+    );
+
+    bad!(
+        "
+            p_a = ''
+            p_b = [
+                {c_a = '', c_b = 1}
+                               # ^
+            ]
+        ",
+        Parent<String>,
+        "invalid type: integer `1`, expected a string for key `p_b` at line 4 column 34"
+    );
+
+    // FIXME: This location could be better.
+    bad!(
+        "
+            p_a = ''
+            p_b = [
+                {c_a = '', c_b = '', c_d = ''},
+              # ^
+            ]
+        ",
+        Parent<String>,
+        "unknown field `c_d`, expected `c_a` or `c_b` for key `p_b` at line 4 column 17"
+    );
+
+    bad!(
+        "
+            p_a = 'a'
+            p_b = [
+                {c_a = '', c_b = 1, c_d = ''},
+                               # ^
+            ]
+        ",
+        Parent<String>,
+        "invalid type: integer `1`, expected a string for key `p_b` at line 4 column 34"
+    );
+}
+
+#[test]
+fn error_handles_crlf() {
+    bad!(
+        "\r\n\
+         [t1]\r\n\
+         [t2]\r\n\
+         a = 1\r\n\
+         . = 2\r\n\
+         ",
+        serde_json::Value,
+        "expected a table key, found a period at line 5 column 1"
+    );
+
+    // Should be the same as above.
+    bad!(
+        "\n\
+         [t1]\n\
+         [t2]\n\
+         a = 1\n\
+         . = 2\n\
+         ",
+        serde_json::Value,
+        "expected a table key, found a period at line 5 column 1"
+    );
+}
diff --git a/vendor/basic-toml/tests/display-tricky.rs b/vendor/basic-toml/tests/display-tricky.rs
new file mode 100644
index 000000000..274b380e9
--- /dev/null
+++ b/vendor/basic-toml/tests/display-tricky.rs
@@ -0,0 +1,53 @@
+use serde::{Deserialize, Serialize};
+
+#[derive(Debug, Serialize, Deserialize)]
+pub struct Recipe {
+    pub name: String,
+    pub description: Option<String>,
+    #[serde(default)]
+    pub modules: Vec<Modules>,
+    #[serde(default)]
+    pub packages: Vec<Packages>,
+}
+
+#[derive(Debug, Serialize, Deserialize)]
+pub struct Modules {
+    pub name: String,
+    pub version: Option<String>,
+}
+
+#[derive(Debug, Serialize, Deserialize)]
+pub struct Packages {
+    pub name: String,
+    pub version: Option<String>,
+}
+
+#[test]
+fn both_ends() {
+    let recipe_works = basic_toml::from_str::<Recipe>(
+        r#"
+        name = "testing"
+        description = "example"
+        modules = []
+
+        [[packages]]
+        name = "base"
+    "#,
+    )
+    .unwrap();
+    basic_toml::to_string(&recipe_works).unwrap();
+
+    let recipe_fails = basic_toml::from_str::<Recipe>(
+        r#"
+        name = "testing"
+        description = "example"
+        packages = []
+
+        [[modules]]
+        name = "base"
+    "#,
+    )
+    .unwrap();
+    let err = basic_toml::to_string(&recipe_fails).unwrap_err();
+    assert_eq!(err.to_string(), "values must be emitted before tables");
+}
diff --git a/vendor/basic-toml/tests/enum_external_deserialize.rs b/vendor/basic-toml/tests/enum_external_deserialize.rs
new file mode 100644
index 000000000..337fddf80
--- /dev/null
+++ b/vendor/basic-toml/tests/enum_external_deserialize.rs
@@ -0,0 +1,30 @@
+#![allow(clippy::wildcard_imports)]
+
+use serde::Deserialize;
+
+#[derive(Debug, Deserialize, PartialEq)]
+struct Struct {
+    value: Enum,
+}
+
+#[derive(Debug, Deserialize, PartialEq)]
+enum Enum {
+    Variant,
+}
+
+#[test]
+fn unknown_variant() {
+    let error = basic_toml::from_str::<Struct>("value = \"NonExistent\"").unwrap_err();
+
+    assert_eq!(
+        error.to_string(),
+        "unknown variant `NonExistent`, expected `Variant` for key `value` at line 1 column 1"
+    );
+}
+
+#[test]
+fn from_str() {
+    let s = basic_toml::from_str::<Struct>("value = \"Variant\"").unwrap();
+
+    assert_eq!(Enum::Variant, s.value);
+}
diff --git a/vendor/basic-toml/tests/float.rs b/vendor/basic-toml/tests/float.rs
new file mode 100644
index 000000000..6923456fc
--- /dev/null
+++ b/vendor/basic-toml/tests/float.rs
@@ -0,0 +1,81 @@
+#![allow(clippy::float_cmp)]
+
+use serde::{Deserialize, Serialize};
+use serde_json::Value;
+
+#[rustfmt::skip] // appears to be a bug in rustfmt to make this converge...
+macro_rules! float_inf_tests {
+    ($ty:ty) => {{
+        #[derive(Serialize, Deserialize)]
+        struct S {
+            sf1: $ty,
+            sf2: $ty,
+            sf3: $ty,
+            sf4: $ty,
+            sf5: $ty,
+            sf6: $ty,
+            sf7: $ty,
+            sf8: $ty,
+        }
+        let inf: S = basic_toml::from_str(
+            r"
+        # infinity
+        sf1 = inf  # positive infinity
+        sf2 = +inf # positive infinity
+        sf3 = -inf # negative infinity
+
+        # not a number
+        sf4 = nan  # actual sNaN/qNaN encoding is implementation specific
+        sf5 = +nan # same as `nan`
+        sf6 = -nan # valid, actual encoding is implementation specific
+
+        # zero
+        sf7 = +0.0
+        sf8 = -0.0
+        ",
+        )
+        .expect("Parse infinities.");
+
+        assert!(inf.sf1.is_infinite());
+        assert!(inf.sf1.is_sign_positive());
+        assert!(inf.sf2.is_infinite());
+        assert!(inf.sf2.is_sign_positive());
+        assert!(inf.sf3.is_infinite());
+        assert!(inf.sf3.is_sign_negative());
+
+        assert!(inf.sf4.is_nan());
+        assert!(inf.sf4.is_sign_positive());
+        assert!(inf.sf5.is_nan());
+        assert!(inf.sf5.is_sign_positive());
+        assert!(inf.sf6.is_nan());
+        assert!(inf.sf6.is_sign_negative());
+
+        assert_eq!(inf.sf7, 0.0);
+        assert!(inf.sf7.is_sign_positive());
+        assert_eq!(inf.sf8, 0.0);
+        assert!(inf.sf8.is_sign_negative());
+
+        let s = basic_toml::to_string(&inf).unwrap();
+        assert_eq!(
+            s,
+            "\
+sf1 = inf
+sf2 = inf
+sf3 = -inf
+sf4 = nan
+sf5 = nan
+sf6 = -nan
+sf7 = 0.0
+sf8 = -0.0
+"
+        );
+
+        basic_toml::from_str::<Value>(&s).expect("roundtrip");
+    }};
+}
+
+#[test]
+fn float_inf() {
+    float_inf_tests!(f32);
+    float_inf_tests!(f64);
+}
diff --git a/vendor/basic-toml/tests/formatting.rs b/vendor/basic-toml/tests/formatting.rs
new file mode 100644
index 000000000..5e3fb794a
--- /dev/null
+++ b/vendor/basic-toml/tests/formatting.rs
@@ -0,0 +1,53 @@
+use basic_toml::to_string;
+use serde::{Deserialize, Serialize};
+
+#[derive(Debug, Clone, Hash, PartialEq, Eq, Serialize, Deserialize)]
+struct User {
+    pub name: String,
+    pub surname: String,
+}
+
+#[derive(Debug, Clone, Hash, PartialEq, Eq, Serialize, Deserialize)]
+struct Users {
+    pub user: Vec<User>,
+}
+
+#[derive(Debug, Clone, Hash, PartialEq, Eq, Serialize, Deserialize)]
+struct TwoUsers {
+    pub user0: User,
+    pub user1: User,
+}
+
+#[test]
+fn no_unnecessary_newlines_array() {
+    assert!(!to_string(&Users {
+        user: vec![
+            User {
+                name: "John".to_string(),
+                surname: "Doe".to_string(),
+            },
+            User {
+                name: "Jane".to_string(),
+                surname: "Dough".to_string(),
+            },
+        ],
+    })
+    .unwrap()
+    .starts_with('\n'));
+}
+
+#[test]
+fn no_unnecessary_newlines_table() {
+    assert!(!to_string(&TwoUsers {
+        user0: User {
+            name: "John".to_string(),
+            surname: "Doe".to_string(),
+        },
+        user1: User {
+            name: "Jane".to_string(),
+            surname: "Dough".to_string(),
+        },
+    })
+    .unwrap()
+    .starts_with('\n'));
+}
diff --git a/vendor/basic-toml/tests/invalid-encoder/array-mixed-types-ints-and-floats.json b/vendor/basic-toml/tests/invalid-encoder/array-mixed-types-ints-and-floats.json
new file mode 100644
index 000000000..2d42ead67
--- /dev/null
+++ b/vendor/basic-toml/tests/invalid-encoder/array-mixed-types-ints-and-floats.json
@@ -0,0 +1,15 @@
+{
+    "ints-and-floats": {
+        "type": "array",
+        "value": [
+            {
+                "type": "integer",
+                "value": "1"
+            },
+            {
+                "type": "float",
+                "value": "1.1"
+            }
+        ]
+    }
+}
diff --git a/vendor/basic-toml/tests/invalid-misc.rs b/vendor/basic-toml/tests/invalid-misc.rs
new file mode 100644
index 000000000..a02bf045a
--- /dev/null
+++ b/vendor/basic-toml/tests/invalid-misc.rs
@@ -0,0 +1,48 @@
+use serde_json::Value;
+
+macro_rules! bad {
+    ($toml:expr, $msg:expr) => {
+        match basic_toml::from_str::<Value>($toml) {
+            Ok(s) => panic!("parsed to: {:#?}", s),
+            Err(e) => assert_eq!(e.to_string(), $msg),
+        }
+    };
+}
+
+#[test]
+fn bad() {
+    bad!("a = 01", "invalid number at line 1 column 6");
+    bad!("a = 1__1", "invalid number at line 1 column 5");
+    bad!("a = 1_", "invalid number at line 1 column 5");
+    bad!("''", "expected an equals, found eof at line 1 column 3");
+    bad!("a = 9e99999", "invalid number at line 1 column 5");
+
+    bad!(
+        "a = \"\u{7f}\"",
+        "invalid character in string: `\\u{7f}` at line 1 column 6"
+    );
+    bad!(
+        "a = '\u{7f}'",
+        "invalid character in string: `\\u{7f}` at line 1 column 6"
+    );
+
+    bad!("a = -0x1", "invalid number at line 1 column 5");
+    bad!("a = 0x-1", "invalid number at line 1 column 7");
+
+    // Dotted keys.
+    bad!(
+        "a.b.c = 1
+         a.b = 2
+        ",
+        "duplicate key: `b` for key `a` at line 2 column 12"
+    );
+    bad!(
+        "a = 1
+         a.b = 2",
+        "dotted key attempted to extend non-table type at line 1 column 5"
+    );
+    bad!(
+        "a = {k1 = 1, k1.name = \"joe\"}",
+        "dotted key attempted to extend non-table type at line 1 column 11"
+    );
+}
diff --git a/vendor/basic-toml/tests/invalid.rs b/vendor/basic-toml/tests/invalid.rs
new file mode 100644
index 000000000..cb5ef78c4
--- /dev/null
+++ b/vendor/basic-toml/tests/invalid.rs
@@ -0,0 +1,226 @@
+use serde_json::Value;
+
+macro_rules! bad {
+    ($toml:expr, $msg:expr) => {
+        match basic_toml::from_str::<Value>($toml) {
+            Ok(s) => panic!("parsed to: {:#?}", s),
+            Err(e) => assert_eq!(e.to_string(), $msg),
+        }
+    };
+}
+
+macro_rules! test( ($name:ident, $s:expr, $msg:expr) => (
+    #[test]
+    fn $name() { bad!($s, $msg); }
+) );
+
+test!(
+    datetime_malformed_no_leads,
+    include_str!("invalid/datetime-malformed-no-leads.toml"),
+    "invalid number at line 1 column 12"
+);
+test!(
+    datetime_malformed_no_secs,
+    include_str!("invalid/datetime-malformed-no-secs.toml"),
+    "invalid number at line 1 column 11"
+);
+test!(
+    datetime_malformed_no_t,
+    include_str!("invalid/datetime-malformed-no-t.toml"),
+    "invalid number at line 1 column 8"
+);
+test!(
+    datetime_malformed_with_milli,
+    include_str!("invalid/datetime-malformed-with-milli.toml"),
+    "invalid number at line 1 column 14"
+);
+test!(
+    duplicate_key_table,
+    include_str!("invalid/duplicate-key-table.toml"),
+    "duplicate key: `type` for key `fruit` at line 4 column 8"
+);
+test!(
+    duplicate_keys,
+    include_str!("invalid/duplicate-keys.toml"),
+    "duplicate key: `dupe` at line 2 column 1"
+);
+test!(
+    duplicate_table,
+    include_str!("invalid/duplicate-table.toml"),
+    "redefinition of table `dependencies` for key `dependencies` at line 7 column 1"
+);
+test!(
+    duplicate_tables,
+    include_str!("invalid/duplicate-tables.toml"),
+    "redefinition of table `a` for key `a` at line 2 column 1"
+);
+test!(
+    empty_implicit_table,
+    include_str!("invalid/empty-implicit-table.toml"),
+    "expected a table key, found a period at line 1 column 10"
+);
+test!(
+    empty_table,
+    include_str!("invalid/empty-table.toml"),
+    "expected a table key, found a right bracket at line 1 column 2"
+);
+test!(
+    float_no_leading_zero,
+    include_str!("invalid/float-no-leading-zero.toml"),
+    "expected a value, found a period at line 1 column 10"
+);
+test!(
+    float_no_suffix,
+    include_str!("invalid/float-no-suffix.toml"),
+    "invalid number at line 1 column 5"
+);
+test!(
+    float_no_trailing_digits,
+    include_str!("invalid/float-no-trailing-digits.toml"),
+    "invalid number at line 1 column 12"
+);
+test!(
+    key_after_array,
+    include_str!("invalid/key-after-array.toml"),
+    "expected newline, found an identifier at line 1 column 14"
+);
+test!(
+    key_after_table,
+    include_str!("invalid/key-after-table.toml"),
+    "expected newline, found an identifier at line 1 column 11"
+);
+test!(
+    key_empty,
+    include_str!("invalid/key-empty.toml"),
+    "expected a table key, found an equals at line 1 column 2"
+);
+test!(
+    key_hash,
+    include_str!("invalid/key-hash.toml"),
+    "expected an equals, found a comment at line 1 column 2"
+);
+test!(
+    key_newline,
+    include_str!("invalid/key-newline.toml"),
+    "expected an equals, found a newline at line 1 column 2"
+);
+test!(
+    key_open_bracket,
+    include_str!("invalid/key-open-bracket.toml"),
+    "expected a right bracket, found an equals at line 1 column 6"
+);
+test!(
+    key_single_open_bracket,
+    include_str!("invalid/key-single-open-bracket.toml"),
+    "expected a table key, found eof at line 1 column 2"
+);
+test!(
+    key_space,
+    include_str!("invalid/key-space.toml"),
+    "expected an equals, found an identifier at line 1 column 3"
+);
+test!(
+    key_start_bracket,
+    include_str!("invalid/key-start-bracket.toml"),
+    "expected a right bracket, found an equals at line 2 column 6"
+);
+test!(
+    key_two_equals,
+    include_str!("invalid/key-two-equals.toml"),
+    "expected a value, found an equals at line 1 column 6"
+);
+test!(
+    string_bad_byte_escape,
+    include_str!("invalid/string-bad-byte-escape.toml"),
+    "invalid escape character in string: `x` at line 1 column 13"
+);
+test!(
+    string_bad_escape,
+    include_str!("invalid/string-bad-escape.toml"),
+    "invalid escape character in string: `a` at line 1 column 42"
+);
+test!(
+    string_bad_line_ending_escape,
+    include_str!("invalid/string-bad-line-ending-escape.toml"),
+    "invalid escape character in string: ` ` at line 2 column 79"
+);
+test!(
+    string_byte_escapes,
+    include_str!("invalid/string-byte-escapes.toml"),
+    "invalid escape character in string: `x` at line 1 column 12"
+);
+test!(
+    string_no_close,
+    include_str!("invalid/string-no-close.toml"),
+    "newline in string found at line 1 column 42"
+);
+test!(
+    table_array_implicit,
+    include_str!("invalid/table-array-implicit.toml"),
+    "table redefined as array for key `albums` at line 13 column 1"
+);
+test!(
+    table_array_malformed_bracket,
+    include_str!("invalid/table-array-malformed-bracket.toml"),
+    "expected a right bracket, found a newline at line 1 column 10"
+);
+test!(
+    table_array_malformed_empty,
+    include_str!("invalid/table-array-malformed-empty.toml"),
+    "expected a table key, found a right bracket at line 1 column 3"
+);
+test!(
+    table_empty,
+    include_str!("invalid/table-empty.toml"),
+    "expected a table key, found a right bracket at line 1 column 2"
+);
+test!(
+    table_nested_brackets_close,
+    include_str!("invalid/table-nested-brackets-close.toml"),
+    "expected newline, found an identifier at line 1 column 4"
+);
+test!(
+    table_nested_brackets_open,
+    include_str!("invalid/table-nested-brackets-open.toml"),
+    "expected a right bracket, found a left bracket at line 1 column 3"
+);
+test!(
+    table_whitespace,
+    include_str!("invalid/table-whitespace.toml"),
+    "expected a right bracket, found an identifier at line 1 column 10"
+);
+test!(
+    table_with_pound,
+    include_str!("invalid/table-with-pound.toml"),
+    "expected a right bracket, found a comment at line 1 column 5"
+);
+test!(
+    text_after_array_entries,
+    include_str!("invalid/text-after-array-entries.toml"),
+    "invalid TOML value, did you mean to use a quoted string? at line 2 column 46"
+);
+test!(
+    text_after_integer,
+    include_str!("invalid/text-after-integer.toml"),
+    "expected newline, found an identifier at line 1 column 13"
+);
+test!(
+    text_after_string,
+    include_str!("invalid/text-after-string.toml"),
+    "expected newline, found an identifier at line 1 column 41"
+);
+test!(
+    text_after_table,
+    include_str!("invalid/text-after-table.toml"),
+    "expected newline, found an identifier at line 1 column 9"
+);
+test!(
+    text_before_array_separator,
+    include_str!("invalid/text-before-array-separator.toml"),
+    "expected a right bracket, found an identifier at line 2 column 46"
+);
+test!(
+    text_in_array,
+    include_str!("invalid/text-in-array.toml"),
+    "invalid TOML value, did you mean to use a quoted string? at line 3 column 3"
+);
diff --git a/vendor/basic-toml/tests/invalid/datetime-malformed-no-leads.toml b/vendor/basic-toml/tests/invalid/datetime-malformed-no-leads.toml
new file mode 100644
index 000000000..123f173be
--- /dev/null
+++ b/vendor/basic-toml/tests/invalid/datetime-malformed-no-leads.toml
@@ -0,0 +1 @@
+no-leads = 1987-7-05T17:45:00Z
diff --git a/vendor/basic-toml/tests/invalid/datetime-malformed-no-secs.toml b/vendor/basic-toml/tests/invalid/datetime-malformed-no-secs.toml
new file mode 100644
index 000000000..ba9390076
--- /dev/null
+++ b/vendor/basic-toml/tests/invalid/datetime-malformed-no-secs.toml
@@ -0,0 +1 @@
+no-secs = 1987-07-05T17:45Z
diff --git a/vendor/basic-toml/tests/invalid/datetime-malformed-no-t.toml b/vendor/basic-toml/tests/invalid/datetime-malformed-no-t.toml
new file mode 100644
index 000000000..617e3c56d
--- /dev/null
+++ b/vendor/basic-toml/tests/invalid/datetime-malformed-no-t.toml
@@ -0,0 +1 @@
+no-t = 1987-07-0517:45:00Z
diff --git a/vendor/basic-toml/tests/invalid/datetime-malformed-with-milli.toml b/vendor/basic-toml/tests/invalid/datetime-malformed-with-milli.toml
new file mode 100644
index 000000000..eef792f34
--- /dev/null
+++ b/vendor/basic-toml/tests/invalid/datetime-malformed-with-milli.toml
@@ -0,0 +1 @@
+with-milli = 1987-07-5T17:45:00.12Z
diff --git a/vendor/basic-toml/tests/invalid/duplicate-key-table.toml b/vendor/basic-toml/tests/invalid/duplicate-key-table.toml
new file mode 100644
index 000000000..cedf05fc5
--- /dev/null
+++ b/vendor/basic-toml/tests/invalid/duplicate-key-table.toml
@@ -0,0 +1,5 @@
+[fruit]
+type = "apple"
+
+[fruit.type]
+apple = "yes"
diff --git a/vendor/basic-toml/tests/invalid/duplicate-keys.toml b/vendor/basic-toml/tests/invalid/duplicate-keys.toml
new file mode 100644
index 000000000..9b5aee0e5
--- /dev/null
+++ b/vendor/basic-toml/tests/invalid/duplicate-keys.toml
@@ -0,0 +1,2 @@
+dupe = false
+dupe = true
diff --git a/vendor/basic-toml/tests/invalid/duplicate-table.toml b/vendor/basic-toml/tests/invalid/duplicate-table.toml
new file mode 100644
index 000000000..5bd2571e6
--- /dev/null
+++ b/vendor/basic-toml/tests/invalid/duplicate-table.toml
@@ -0,0 +1,8 @@
+[dependencies.openssl-sys]
+version = "0.5.2"
+
+[dependencies]
+libc = "0.1"
+
+[dependencies]
+bitflags = "0.1.1"
diff --git a/vendor/basic-toml/tests/invalid/duplicate-tables.toml b/vendor/basic-toml/tests/invalid/duplicate-tables.toml
new file mode 100644
index 000000000..8ddf49b4e
--- /dev/null
+++ b/vendor/basic-toml/tests/invalid/duplicate-tables.toml
@@ -0,0 +1,2 @@
+[a]
+[a]
diff --git a/vendor/basic-toml/tests/invalid/empty-implicit-table.toml b/vendor/basic-toml/tests/invalid/empty-implicit-table.toml
new file mode 100644
index 000000000..0cc36d0d2
--- /dev/null
+++ b/vendor/basic-toml/tests/invalid/empty-implicit-table.toml
@@ -0,0 +1 @@
+[naughty..naughty]
diff --git a/vendor/basic-toml/tests/invalid/empty-table.toml b/vendor/basic-toml/tests/invalid/empty-table.toml
new file mode 100644
index 000000000..fe51488c7
--- /dev/null
+++ b/vendor/basic-toml/tests/invalid/empty-table.toml
@@ -0,0 +1 @@
+[]
diff --git a/vendor/basic-toml/tests/invalid/float-no-leading-zero.toml b/vendor/basic-toml/tests/invalid/float-no-leading-zero.toml
new file mode 100644
index 000000000..cab76bfd1
--- /dev/null
+++ b/vendor/basic-toml/tests/invalid/float-no-leading-zero.toml
@@ -0,0 +1,2 @@
+answer = .12345
+neganswer = -.12345
diff --git a/vendor/basic-toml/tests/invalid/float-no-suffix.toml b/vendor/basic-toml/tests/invalid/float-no-suffix.toml
new file mode 100644
index 000000000..76106de75
--- /dev/null
+++ b/vendor/basic-toml/tests/invalid/float-no-suffix.toml
@@ -0,0 +1 @@
+a = 1.2f
diff --git a/vendor/basic-toml/tests/invalid/float-no-trailing-digits.toml b/vendor/basic-toml/tests/invalid/float-no-trailing-digits.toml
new file mode 100644
index 000000000..cbff2d06f
--- /dev/null
+++ b/vendor/basic-toml/tests/invalid/float-no-trailing-digits.toml
@@ -0,0 +1,2 @@
+answer = 1.
+neganswer = -1.
diff --git a/vendor/basic-toml/tests/invalid/key-after-array.toml b/vendor/basic-toml/tests/invalid/key-after-array.toml
new file mode 100644
index 000000000..5c1a1b0a9
--- /dev/null
+++ b/vendor/basic-toml/tests/invalid/key-after-array.toml
@@ -0,0 +1 @@
+[[agencies]] owner = "S Cjelli"
diff --git a/vendor/basic-toml/tests/invalid/key-after-table.toml b/vendor/basic-toml/tests/invalid/key-after-table.toml
new file mode 100644
index 000000000..4bc82136c
--- /dev/null
+++ b/vendor/basic-toml/tests/invalid/key-after-table.toml
@@ -0,0 +1 @@
+[history] guard = "sleeping"
diff --git a/vendor/basic-toml/tests/invalid/key-empty.toml b/vendor/basic-toml/tests/invalid/key-empty.toml
new file mode 100644
index 000000000..09f998f41
--- /dev/null
+++ b/vendor/basic-toml/tests/invalid/key-empty.toml
@@ -0,0 +1 @@
+ = 1
diff --git a/vendor/basic-toml/tests/invalid/key-hash.toml b/vendor/basic-toml/tests/invalid/key-hash.toml
new file mode 100644
index 000000000..e321b1fbd
--- /dev/null
+++ b/vendor/basic-toml/tests/invalid/key-hash.toml
@@ -0,0 +1 @@
+a# = 1
diff --git a/vendor/basic-toml/tests/invalid/key-newline.toml b/vendor/basic-toml/tests/invalid/key-newline.toml
new file mode 100644
index 000000000..707aad54e
--- /dev/null
+++ b/vendor/basic-toml/tests/invalid/key-newline.toml
@@ -0,0 +1,2 @@
+a
+= 1
diff --git a/vendor/basic-toml/tests/invalid/key-open-bracket.toml b/vendor/basic-toml/tests/invalid/key-open-bracket.toml
new file mode 100644
index 000000000..f0aeb16e5
--- /dev/null
+++ b/vendor/basic-toml/tests/invalid/key-open-bracket.toml
@@ -0,0 +1 @@
+[abc = 1
diff --git a/vendor/basic-toml/tests/invalid/key-single-open-bracket.toml b/vendor/basic-toml/tests/invalid/key-single-open-bracket.toml
new file mode 100644
index 000000000..8e2f0bef1
--- /dev/null
+++ b/vendor/basic-toml/tests/invalid/key-single-open-bracket.toml
@@ -0,0 +1 @@
+[
\ No newline at end of file
diff --git a/vendor/basic-toml/tests/invalid/key-space.toml b/vendor/basic-toml/tests/invalid/key-space.toml
new file mode 100644
index 000000000..201806d28
--- /dev/null
+++ b/vendor/basic-toml/tests/invalid/key-space.toml
@@ -0,0 +1 @@
+a b = 1
\ No newline at end of file
diff --git a/vendor/basic-toml/tests/invalid/key-start-bracket.toml b/vendor/basic-toml/tests/invalid/key-start-bracket.toml
new file mode 100644
index 000000000..e0597ae1c
--- /dev/null
+++ b/vendor/basic-toml/tests/invalid/key-start-bracket.toml
@@ -0,0 +1,3 @@
+[a]
+[xyz = 5
+[b]
diff --git a/vendor/basic-toml/tests/invalid/key-two-equals.toml b/vendor/basic-toml/tests/invalid/key-two-equals.toml
new file mode 100644
index 000000000..25a037894
--- /dev/null
+++ b/vendor/basic-toml/tests/invalid/key-two-equals.toml
@@ -0,0 +1 @@
+key= = 1
diff --git a/vendor/basic-toml/tests/invalid/string-bad-byte-escape.toml b/vendor/basic-toml/tests/invalid/string-bad-byte-escape.toml
new file mode 100644
index 000000000..4c7be59f4
--- /dev/null
+++ b/vendor/basic-toml/tests/invalid/string-bad-byte-escape.toml
@@ -0,0 +1 @@
+naughty = "\xAg"
diff --git a/vendor/basic-toml/tests/invalid/string-bad-escape.toml b/vendor/basic-toml/tests/invalid/string-bad-escape.toml
new file mode 100644
index 000000000..60acb0ccc
--- /dev/null
+++ b/vendor/basic-toml/tests/invalid/string-bad-escape.toml
@@ -0,0 +1 @@
+invalid-escape = "This string has a bad \a escape character."
diff --git a/vendor/basic-toml/tests/invalid/string-bad-line-ending-escape.toml b/vendor/basic-toml/tests/invalid/string-bad-line-ending-escape.toml
new file mode 100644
index 000000000..32e2c4862
--- /dev/null
+++ b/vendor/basic-toml/tests/invalid/string-bad-line-ending-escape.toml
@@ -0,0 +1,3 @@
+invalid-escape = """\
+    This string has a non whitespace-character after the line ending escape. \  a
+"""
diff --git a/vendor/basic-toml/tests/invalid/string-byte-escapes.toml b/vendor/basic-toml/tests/invalid/string-byte-escapes.toml
new file mode 100644
index 000000000..e94452a8d
--- /dev/null
+++ b/vendor/basic-toml/tests/invalid/string-byte-escapes.toml
@@ -0,0 +1 @@
+answer = "\x33"
diff --git a/vendor/basic-toml/tests/invalid/string-no-close.toml b/vendor/basic-toml/tests/invalid/string-no-close.toml
new file mode 100644
index 000000000..0c292fcab
--- /dev/null
+++ b/vendor/basic-toml/tests/invalid/string-no-close.toml
@@ -0,0 +1 @@
+no-ending-quote = "One time, at band camp
diff --git a/vendor/basic-toml/tests/invalid/table-array-implicit.toml b/vendor/basic-toml/tests/invalid/table-array-implicit.toml
new file mode 100644
index 000000000..05f2507ec
--- /dev/null
+++ b/vendor/basic-toml/tests/invalid/table-array-implicit.toml
@@ -0,0 +1,14 @@
+# This test is a bit tricky. It should fail because the first use of
+# `[[albums.songs]]` without first declaring `albums` implies that `albums`
+# must be a table. The alternative would be quite weird. Namely, it wouldn't
+# comply with the TOML spec: "Each double-bracketed sub-table will belong to 
+# the most *recently* defined table element *above* it."
+#
+# This is in contrast to the *valid* test, table-array-implicit where
+# `[[albums.songs]]` works by itself, so long as `[[albums]]` isn't declared
+# later. (Although, `[albums]` could be.)
+[[albums.songs]]
+name = "Glory Days"
+
+[[albums]]
+name = "Born in the USA"
diff --git a/vendor/basic-toml/tests/invalid/table-array-malformed-bracket.toml b/vendor/basic-toml/tests/invalid/table-array-malformed-bracket.toml
new file mode 100644
index 000000000..39c73b05c
--- /dev/null
+++ b/vendor/basic-toml/tests/invalid/table-array-malformed-bracket.toml
@@ -0,0 +1,2 @@
+[[albums]
+name = "Born to Run"
diff --git a/vendor/basic-toml/tests/invalid/table-array-malformed-empty.toml b/vendor/basic-toml/tests/invalid/table-array-malformed-empty.toml
new file mode 100644
index 000000000..a470ca332
--- /dev/null
+++ b/vendor/basic-toml/tests/invalid/table-array-malformed-empty.toml
@@ -0,0 +1,2 @@
+[[]]
+name = "Born to Run"
diff --git a/vendor/basic-toml/tests/invalid/table-empty.toml b/vendor/basic-toml/tests/invalid/table-empty.toml
new file mode 100644
index 000000000..fe51488c7
--- /dev/null
+++ b/vendor/basic-toml/tests/invalid/table-empty.toml
@@ -0,0 +1 @@
+[]
diff --git a/vendor/basic-toml/tests/invalid/table-nested-brackets-close.toml b/vendor/basic-toml/tests/invalid/table-nested-brackets-close.toml
new file mode 100644
index 000000000..c8b5a6785
--- /dev/null
+++ b/vendor/basic-toml/tests/invalid/table-nested-brackets-close.toml
@@ -0,0 +1,2 @@
+[a]b]
+zyx = 42
diff --git a/vendor/basic-toml/tests/invalid/table-nested-brackets-open.toml b/vendor/basic-toml/tests/invalid/table-nested-brackets-open.toml
new file mode 100644
index 000000000..246d7e91f
--- /dev/null
+++ b/vendor/basic-toml/tests/invalid/table-nested-brackets-open.toml
@@ -0,0 +1,2 @@
+[a[b]
+zyx = 42
diff --git a/vendor/basic-toml/tests/invalid/table-whitespace.toml b/vendor/basic-toml/tests/invalid/table-whitespace.toml
new file mode 100644
index 000000000..79bbcb1e2
--- /dev/null
+++ b/vendor/basic-toml/tests/invalid/table-whitespace.toml
@@ -0,0 +1 @@
+[invalid key]
\ No newline at end of file
diff --git a/vendor/basic-toml/tests/invalid/table-with-pound.toml b/vendor/basic-toml/tests/invalid/table-with-pound.toml
new file mode 100644
index 000000000..0d8edb524
--- /dev/null
+++ b/vendor/basic-toml/tests/invalid/table-with-pound.toml
@@ -0,0 +1,2 @@
+[key#group]
+answer = 42
\ No newline at end of file
diff --git a/vendor/basic-toml/tests/invalid/text-after-array-entries.toml b/vendor/basic-toml/tests/invalid/text-after-array-entries.toml
new file mode 100644
index 000000000..1a7289074
--- /dev/null
+++ b/vendor/basic-toml/tests/invalid/text-after-array-entries.toml
@@ -0,0 +1,4 @@
+array = [
+  "Is there life after an array separator?", No
+  "Entry"
+]
diff --git a/vendor/basic-toml/tests/invalid/text-after-integer.toml b/vendor/basic-toml/tests/invalid/text-after-integer.toml
new file mode 100644
index 000000000..42de7aff4
--- /dev/null
+++ b/vendor/basic-toml/tests/invalid/text-after-integer.toml
@@ -0,0 +1 @@
+answer = 42 the ultimate answer?
diff --git a/vendor/basic-toml/tests/invalid/text-after-string.toml b/vendor/basic-toml/tests/invalid/text-after-string.toml
new file mode 100644
index 000000000..c92a6f11d
--- /dev/null
+++ b/vendor/basic-toml/tests/invalid/text-after-string.toml
@@ -0,0 +1 @@
+string = "Is there life after strings?" No.
diff --git a/vendor/basic-toml/tests/invalid/text-after-table.toml b/vendor/basic-toml/tests/invalid/text-after-table.toml
new file mode 100644
index 000000000..87da9db26
--- /dev/null
+++ b/vendor/basic-toml/tests/invalid/text-after-table.toml
@@ -0,0 +1 @@
+[error] this shouldn't be here
diff --git a/vendor/basic-toml/tests/invalid/text-before-array-separator.toml b/vendor/basic-toml/tests/invalid/text-before-array-separator.toml
new file mode 100644
index 000000000..9b06a3924
--- /dev/null
+++ b/vendor/basic-toml/tests/invalid/text-before-array-separator.toml
@@ -0,0 +1,4 @@
+array = [
+  "Is there life before an array separator?" No,
+  "Entry"
+]
diff --git a/vendor/basic-toml/tests/invalid/text-in-array.toml b/vendor/basic-toml/tests/invalid/text-in-array.toml
new file mode 100644
index 000000000..a6a6c4207
--- /dev/null
+++ b/vendor/basic-toml/tests/invalid/text-in-array.toml
@@ -0,0 +1,5 @@
+array = [
+  "Entry 1",
+  I don't belong,
+  "Entry 2",
+]
diff --git a/vendor/basic-toml/tests/parser.rs b/vendor/basic-toml/tests/parser.rs
new file mode 100644
index 000000000..22b40a54e
--- /dev/null
+++ b/vendor/basic-toml/tests/parser.rs
@@ -0,0 +1,687 @@
+#![allow(clippy::let_underscore_untyped, clippy::uninlined_format_args)]
+
+use serde_json::{json, Value};
+
+macro_rules! bad {
+    ($toml:expr, $msg:expr) => {
+        match basic_toml::from_str::<Value>($toml) {
+            Ok(s) => panic!("parsed to: {:#?}", s),
+            Err(e) => assert_eq!(e.to_string(), $msg),
+        }
+    };
+}
+
+#[test]
+fn crlf() {
+    let toml = "\
+     [project]\r\n\
+     \r\n\
+     name = \"splay\"\r\n\
+     version = \"0.1.0\"\r\n\
+     authors = [\"alex@crichton.co\"]\r\n\
+     \r\n\
+     [[lib]]\r\n\
+     \r\n\
+     path = \"lib.rs\"\r\n\
+     name = \"splay\"\r\n\
+     description = \"\"\"\
+     A Rust implementation of a TAR file reader and writer. This library does not\r\n\
+     currently handle compression, but it is abstract over all I/O readers and\r\n\
+     writers. Additionally, great lengths are taken to ensure that the entire\r\n\
+     contents are never required to be entirely resident in memory all at once.\r\n\
+     \"\"\"\
+     ";
+    basic_toml::from_str::<Value>(toml).unwrap();
+}
+
+#[test]
+fn fun_with_strings() {
+    let toml = r#"
+bar = "\U00000000"
+key1 = "One\nTwo"
+key2 = """One\nTwo"""
+key3 = """
+One
+Two"""
+
+key4 = "The quick brown fox jumps over the lazy dog."
+key5 = """
+The quick brown \
+
+
+fox jumps over \
+the lazy dog."""
+key6 = """\
+   The quick brown \
+   fox jumps over \
+   the lazy dog.\
+   """
+# What you see is what you get.
+winpath  = 'C:\Users\nodejs\templates'
+winpath2 = '\\ServerX\admin$\system32\'
+quoted   = 'Tom "Dubs" Preston-Werner'
+regex    = '<\i\c*\s*>'
+
+regex2 = '''I [dw]on't need \d{2} apples'''
+lines  = '''
+The first newline is
+trimmed in raw strings.
+All other whitespace
+is preserved.
+'''
+"#;
+    let table: Value = basic_toml::from_str(toml).unwrap();
+    assert_eq!(table["bar"], json!("\0"));
+    assert_eq!(table["key1"], json!("One\nTwo"));
+    assert_eq!(table["key2"], json!("One\nTwo"));
+    assert_eq!(table["key3"], json!("One\nTwo"));
+
+    let msg = "The quick brown fox jumps over the lazy dog.";
+    assert_eq!(table["key4"], json!(msg));
+    assert_eq!(table["key5"], json!(msg));
+    assert_eq!(table["key6"], json!(msg));
+
+    assert_eq!(table["winpath"], json!(r"C:\Users\nodejs\templates"));
+    assert_eq!(table["winpath2"], json!(r"\\ServerX\admin$\system32\"));
+    assert_eq!(table["quoted"], json!(r#"Tom "Dubs" Preston-Werner"#));
+    assert_eq!(table["regex"], json!(r"<\i\c*\s*>"));
+    assert_eq!(table["regex2"], json!(r"I [dw]on't need \d{2} apples"));
+    assert_eq!(
+        table["lines"],
+        json!(
+            "The first newline is\n\
+             trimmed in raw strings.\n\
+             All other whitespace\n\
+             is preserved.\n"
+        )
+    );
+}
+
+#[test]
+fn tables_in_arrays() {
+    let toml = r#"
+[[foo]]
+#…
+[foo.bar]
+#…
+
+[[foo]] # ...
+#…
+[foo.bar]
+#...
+"#;
+    let table: Value = basic_toml::from_str(toml).unwrap();
+    table["foo"][0]["bar"].as_object().unwrap();
+    table["foo"][1]["bar"].as_object().unwrap();
+}
+
+#[test]
+fn empty_table() {
+    let toml = r#"
+[foo]"#;
+    let table: Value = basic_toml::from_str(toml).unwrap();
+    table["foo"].as_object().unwrap();
+}
+
+#[test]
+fn fruit() {
+    let toml = r#"
+[[fruit]]
+name = "apple"
+
+[fruit.physical]
+color = "red"
+shape = "round"
+
+[[fruit.variety]]
+name = "red delicious"
+
+[[fruit.variety]]
+name = "granny smith"
+
+[[fruit]]
+name = "banana"
+
+[[fruit.variety]]
+name = "plantain"
+"#;
+    let table: Value = basic_toml::from_str(toml).unwrap();
+    assert_eq!(table["fruit"][0]["name"], json!("apple"));
+    assert_eq!(table["fruit"][0]["physical"]["color"], json!("red"));
+    assert_eq!(table["fruit"][0]["physical"]["shape"], json!("round"));
+    assert_eq!(
+        table["fruit"][0]["variety"][0]["name"],
+        json!("red delicious")
+    );
+    assert_eq!(
+        table["fruit"][0]["variety"][1]["name"],
+        json!("granny smith")
+    );
+    assert_eq!(table["fruit"][1]["name"], json!("banana"));
+    assert_eq!(table["fruit"][1]["variety"][0]["name"], json!("plantain"));
+}
+
+#[test]
+fn stray_cr() {
+    bad!("\r", "unexpected character found: `\\r` at line 1 column 1");
+    bad!(
+        "a = [ \r ]",
+        "unexpected character found: `\\r` at line 1 column 7"
+    );
+    bad!(
+        "a = \"\"\"\r\"\"\"",
+        "invalid character in string: `\\r` at line 1 column 8"
+    );
+    bad!(
+        "a = \"\"\"\\  \r  \"\"\"",
+        "invalid escape character in string: ` ` at line 1 column 9"
+    );
+    bad!(
+        "a = '''\r'''",
+        "invalid character in string: `\\r` at line 1 column 8"
+    );
+    bad!(
+        "a = '\r'",
+        "invalid character in string: `\\r` at line 1 column 6"
+    );
+    bad!(
+        "a = \"\r\"",
+        "invalid character in string: `\\r` at line 1 column 6"
+    );
+}
+
+#[test]
+fn blank_literal_string() {
+    let table: Value = basic_toml::from_str("foo = ''").unwrap();
+    assert_eq!(table["foo"], json!(""));
+}
+
+#[test]
+fn many_blank() {
+    let table: Value = basic_toml::from_str("foo = \"\"\"\n\n\n\"\"\"").unwrap();
+    assert_eq!(table["foo"], json!("\n\n"));
+}
+
+#[test]
+fn literal_eats_crlf() {
+    let toml = "
+        foo = \"\"\"\\\r\n\"\"\"
+        bar = \"\"\"\\\r\n   \r\n   \r\n   a\"\"\"
+    ";
+    let table: Value = basic_toml::from_str(toml).unwrap();
+    assert_eq!(table["foo"], json!(""));
+    assert_eq!(table["bar"], json!("a"));
+}
+
+#[test]
+fn string_no_newline() {
+    bad!("a = \"\n\"", "newline in string found at line 1 column 6");
+    bad!("a = '\n'", "newline in string found at line 1 column 6");
+}
+
+#[test]
+fn bad_leading_zeros() {
+    bad!("a = 00", "invalid number at line 1 column 6");
+    bad!("a = -00", "invalid number at line 1 column 7");
+    bad!("a = +00", "invalid number at line 1 column 7");
+    bad!("a = 00.0", "invalid number at line 1 column 6");
+    bad!("a = -00.0", "invalid number at line 1 column 7");
+    bad!("a = +00.0", "invalid number at line 1 column 7");
+    bad!(
+        "a = 9223372036854775808",
+        "invalid number at line 1 column 5"
+    );
+    bad!(
+        "a = -9223372036854775809",
+        "invalid number at line 1 column 5"
+    );
+}
+
+#[test]
+fn bad_floats() {
+    bad!("a = 0.", "invalid number at line 1 column 7");
+    bad!("a = 0.e", "invalid number at line 1 column 7");
+    bad!("a = 0.E", "invalid number at line 1 column 7");
+    bad!("a = 0.0E", "invalid number at line 1 column 5");
+    bad!("a = 0.0e", "invalid number at line 1 column 5");
+    bad!("a = 0.0e-", "invalid number at line 1 column 9");
+    bad!("a = 0.0e+", "invalid number at line 1 column 5");
+}
+
+#[test]
+fn floats() {
+    macro_rules! t {
+        ($actual:expr, $expected:expr) => {{
+            let f = format!("foo = {}", $actual);
+            println!("{}", f);
+            let a: Value = basic_toml::from_str(&f).unwrap();
+            assert_eq!(a["foo"], json!($expected));
+        }};
+    }
+
+    t!("1.0", 1.0);
+    t!("1.0e0", 1.0);
+    t!("1.0e+0", 1.0);
+    t!("1.0e-0", 1.0);
+    t!("1E-0", 1.0);
+    t!("1.001e-0", 1.001);
+    t!("2e10", 2e10);
+    t!("2e+10", 2e10);
+    t!("2e-10", 2e-10);
+    t!("2_0.0", 20.0);
+    t!("2_0.0_0e1_0", 20.0e10);
+    t!("2_0.1_0e1_0", 20.1e10);
+}
+
+#[test]
+fn bare_key_names() {
+    let toml = "
+        foo = 3
+        foo_3 = 3
+        foo_-2--3--r23f--4-f2-4 = 3
+        _ = 3
+        - = 3
+        8 = 8
+        \"a\" = 3
+        \"!\" = 3
+        \"a^b\" = 3
+        \"\\\"\" = 3
+        \"character encoding\" = \"value\"
+        'ʎǝʞ' = \"value\"
+    ";
+    let a: Value = basic_toml::from_str(toml).unwrap();
+    let _ = &a["foo"];
+    let _ = &a["-"];
+    let _ = &a["_"];
+    let _ = &a["8"];
+    let _ = &a["foo_3"];
+    let _ = &a["foo_-2--3--r23f--4-f2-4"];
+    let _ = &a["a"];
+    let _ = &a["!"];
+    let _ = &a["\""];
+    let _ = &a["character encoding"];
+    let _ = &a["ʎǝʞ"];
+}
+
+#[test]
+fn bad_keys() {
+    bad!(
+        "key\n=3",
+        "expected an equals, found a newline at line 1 column 4"
+    );
+    bad!(
+        "key=\n3",
+        "expected a value, found a newline at line 1 column 5"
+    );
+    bad!(
+        "key|=3",
+        "unexpected character found: `|` at line 1 column 4"
+    );
+    bad!(
+        "=3",
+        "expected a table key, found an equals at line 1 column 1"
+    );
+    bad!(
+        "\"\"|=3",
+        "unexpected character found: `|` at line 1 column 3"
+    );
+    bad!("\"\n\"|=3", "newline in string found at line 1 column 2");
+    bad!(
+        "\"\r\"|=3",
+        "invalid character in string: `\\r` at line 1 column 2"
+    );
+    bad!(
+        "''''''=3",
+        "multiline strings are not allowed for key at line 1 column 1"
+    );
+    bad!(
+        "\"\"\"\"\"\"=3",
+        "multiline strings are not allowed for key at line 1 column 1"
+    );
+    bad!(
+        "'''key'''=3",
+        "multiline strings are not allowed for key at line 1 column 1"
+    );
+    bad!(
+        "\"\"\"key\"\"\"=3",
+        "multiline strings are not allowed for key at line 1 column 1"
+    );
+}
+
+#[test]
+fn bad_table_names() {
+    bad!(
+        "[]",
+        "expected a table key, found a right bracket at line 1 column 2"
+    );
+    bad!(
+        "[.]",
+        "expected a table key, found a period at line 1 column 2"
+    );
+    bad!(
+        "[a.]",
+        "expected a table key, found a right bracket at line 1 column 4"
+    );
+    bad!("[!]", "unexpected character found: `!` at line 1 column 2");
+    bad!("[\"\n\"]", "newline in string found at line 1 column 3");
+    bad!(
+        "[a.b]\n[a.\"b\"]",
+        "redefinition of table `a.b` for key `a.b` at line 2 column 1"
+    );
+    bad!("[']", "unterminated string at line 1 column 2");
+    bad!("[''']", "unterminated string at line 1 column 2");
+    bad!(
+        "['''''']",
+        "multiline strings are not allowed for key at line 1 column 2"
+    );
+    bad!(
+        "['''foo''']",
+        "multiline strings are not allowed for key at line 1 column 2"
+    );
+    bad!(
+        "[\"\"\"bar\"\"\"]",
+        "multiline strings are not allowed for key at line 1 column 2"
+    );
+    bad!("['\n']", "newline in string found at line 1 column 3");
+    bad!("['\r\n']", "newline in string found at line 1 column 3");
+}
+
+#[test]
+fn table_names() {
+    let toml = "
+        [a.\"b\"]
+        [\"f f\"]
+        [\"f.f\"]
+        [\"\\\"\"]
+        ['a.a']
+        ['\"\"']
+    ";
+    let a: Value = basic_toml::from_str(toml).unwrap();
+    println!("{:?}", a);
+    let _ = &a["a"]["b"];
+    let _ = &a["f f"];
+    let _ = &a["f.f"];
+    let _ = &a["\""];
+    let _ = &a["\"\""];
+}
+
+#[test]
+fn invalid_bare_numeral() {
+    bad!("4", "expected an equals, found eof at line 1 column 2");
+}
+
+#[test]
+fn inline_tables() {
+    basic_toml::from_str::<Value>("a = {}").unwrap();
+    basic_toml::from_str::<Value>("a = {b=1}").unwrap();
+    basic_toml::from_str::<Value>("a = {   b   =   1    }").unwrap();
+    basic_toml::from_str::<Value>("a = {a=1,b=2}").unwrap();
+    basic_toml::from_str::<Value>("a = {a=1,b=2,c={}}").unwrap();
+
+    bad!(
+        "a = {a=1,}",
+        "expected a table key, found a right brace at line 1 column 10"
+    );
+    bad!(
+        "a = {,}",
+        "expected a table key, found a comma at line 1 column 6"
+    );
+    bad!(
+        "a = {a=1,a=1}",
+        "duplicate key: `a` for key `a` at line 1 column 10"
+    );
+    bad!(
+        "a = {\n}",
+        "expected a table key, found a newline at line 1 column 6"
+    );
+    bad!(
+        "a = {",
+        "expected a table key, found eof at line 1 column 6"
+    );
+
+    basic_toml::from_str::<Value>("a = {a=[\n]}").unwrap();
+    basic_toml::from_str::<Value>("a = {\"a\"=[\n]}").unwrap();
+    basic_toml::from_str::<Value>("a = [\n{},\n{},\n]").unwrap();
+}
+
+#[test]
+fn number_underscores() {
+    macro_rules! t {
+        ($actual:expr, $expected:expr) => {{
+            let f = format!("foo = {}", $actual);
+            let table: Value = basic_toml::from_str(&f).unwrap();
+            assert_eq!(table["foo"], json!($expected));
+        }};
+    }
+
+    t!("1_0", 10);
+    t!("1_0_0", 100);
+    t!("1_000", 1000);
+    t!("+1_000", 1000);
+    t!("-1_000", -1000);
+}
+
+#[test]
+fn bad_underscores() {
+    bad!("foo = 0_", "invalid number at line 1 column 7");
+    bad!("foo = 0__0", "invalid number at line 1 column 7");
+    bad!(
+        "foo = __0",
+        "invalid TOML value, did you mean to use a quoted string? at line 1 column 7"
+    );
+    bad!("foo = 1_0_", "invalid number at line 1 column 7");
+}
+
+#[test]
+fn bad_unicode_codepoint() {
+    bad!(
+        "foo = \"\\uD800\"",
+        "invalid escape value: `55296` at line 1 column 9"
+    );
+}
+
+#[test]
+fn bad_strings() {
+    bad!(
+        "foo = \"\\uxx\"",
+        "invalid hex escape character in string: `x` at line 1 column 10"
+    );
+    bad!(
+        "foo = \"\\u\"",
+        "invalid hex escape character in string: `\\\"` at line 1 column 10"
+    );
+    bad!("foo = \"\\", "unterminated string at line 1 column 7");
+    bad!("foo = '", "unterminated string at line 1 column 7");
+}
+
+#[test]
+fn empty_string() {
+    let table: Value = basic_toml::from_str::<Value>("foo = \"\"").unwrap();
+    assert_eq!(table["foo"], json!(""));
+}
+
+#[test]
+fn booleans() {
+    let table: Value = basic_toml::from_str("foo = true").unwrap();
+    assert_eq!(table["foo"], json!(true));
+
+    let table: Value = basic_toml::from_str("foo = false").unwrap();
+    assert_eq!(table["foo"], json!(false));
+
+    bad!(
+        "foo = true2",
+        "invalid TOML value, did you mean to use a quoted string? at line 1 column 7"
+    );
+    bad!(
+        "foo = false2",
+        "invalid TOML value, did you mean to use a quoted string? at line 1 column 7"
+    );
+    bad!(
+        "foo = t1",
+        "invalid TOML value, did you mean to use a quoted string? at line 1 column 7"
+    );
+    bad!(
+        "foo = f2",
+        "invalid TOML value, did you mean to use a quoted string? at line 1 column 7"
+    );
+}
+
+#[test]
+fn bad_nesting() {
+    bad!(
+        "
+        a = [2]
+        [[a]]
+        b = 5
+        ",
+        "duplicate key: `a` at line 3 column 11"
+    );
+    bad!(
+        "
+        a = 1
+        [a.b]
+        ",
+        "duplicate key: `a` at line 3 column 10"
+    );
+    bad!(
+        "
+        a = []
+        [a.b]
+        ",
+        "duplicate key: `a` at line 3 column 10"
+    );
+    bad!(
+        "
+        a = []
+        [[a.b]]
+        ",
+        "duplicate key: `a` at line 3 column 11"
+    );
+    bad!(
+        "
+        [a]
+        b = { c = 2, d = {} }
+        [a.b]
+        c = 2
+        ",
+        "duplicate key: `b` for key `a` at line 4 column 12"
+    );
+}
+
+#[test]
+fn bad_table_redefine() {
+    bad!(
+        "
+        [a]
+        foo=\"bar\"
+        [a.b]
+        foo=\"bar\"
+        [a]
+        ",
+        "redefinition of table `a` for key `a` at line 6 column 9"
+    );
+    bad!(
+        "
+        [a]
+        foo=\"bar\"
+        b = { foo = \"bar\" }
+        [a]
+        ",
+        "redefinition of table `a` for key `a` at line 5 column 9"
+    );
+    bad!(
+        "
+        [a]
+        b = {}
+        [a.b]
+        ",
+        "duplicate key: `b` for key `a` at line 4 column 12"
+    );
+
+    bad!(
+        "
+        [a]
+        b = {}
+        [a]
+        ",
+        "redefinition of table `a` for key `a` at line 4 column 9"
+    );
+}
+
+#[test]
+fn datetimes() {
+    bad!(
+        "foo = 2016-09-09T09:09:09Z",
+        "invalid number at line 1 column 7"
+    );
+    bad!(
+        "foo = 2016-09-09T09:09:09.1Z",
+        "invalid number at line 1 column 7"
+    );
+    bad!(
+        "foo = 2016-09-09T09:09:09.2+10:00",
+        "invalid number at line 1 column 7"
+    );
+    bad!(
+        "foo = 2016-09-09T09:09:09.123456789-02:00",
+        "invalid number at line 1 column 7"
+    );
+    bad!(
+        "foo = 2016-09-09T09:09:09.Z",
+        "invalid number at line 1 column 7"
+    );
+    bad!(
+        "foo = 2016-9-09T09:09:09Z",
+        "invalid number at line 1 column 7"
+    );
+    bad!(
+        "foo = 2016-09-09T09:09:09+2:00",
+        "invalid number at line 1 column 7"
+    );
+    bad!(
+        "foo = 2016-09-09T09:09:09-2:00",
+        "invalid number at line 1 column 7"
+    );
+    bad!(
+        "foo = 2016-09-09T09:09:09Z-2:00",
+        "invalid number at line 1 column 7"
+    );
+}
+
+#[test]
+fn require_newline_after_value() {
+    bad!("0=0r=false", "invalid number at line 1 column 3");
+    bad!(
+        r#"
+0=""o=""m=""r=""00="0"q="""0"""e="""0"""
+"#,
+        "expected newline, found an identifier at line 2 column 5"
+    );
+    bad!(
+        r#"
+[[0000l0]]
+0="0"[[0000l0]]
+0="0"[[0000l0]]
+0="0"l="0"
+"#,
+        "expected newline, found a left bracket at line 3 column 6"
+    );
+    bad!(
+        r#"
+0=[0]00=[0,0,0]t=["0","0","0"]s=[1000-00-00T00:00:00Z,2000-00-00T00:00:00Z]
+"#,
+        "expected newline, found an identifier at line 2 column 6"
+    );
+    bad!(
+        r#"
+0=0r0=0r=false
+"#,
+        "invalid number at line 2 column 3"
+    );
+    bad!(
+        r#"
+0=0r0=0r=falsefal=false
+"#,
+        "invalid number at line 2 column 3"
+    );
+}
diff --git a/vendor/basic-toml/tests/tokens.rs b/vendor/basic-toml/tests/tokens.rs
new file mode 100644
index 000000000..0cc6e2e2d
--- /dev/null
+++ b/vendor/basic-toml/tests/tokens.rs
@@ -0,0 +1,188 @@
+#![allow(
+    clippy::let_underscore_untyped,
+    clippy::manual_range_contains,
+    clippy::needless_pass_by_value,
+    clippy::type_complexity
+)]
+
+#[path = "../src/tokens.rs"]
+#[allow(dead_code)]
+mod tokens;
+
+use crate::tokens::{Error, Token, Tokenizer};
+use std::borrow::Cow;
+
+fn err(input: &str, err: Error) {
+    let mut t = Tokenizer::new(input);
+    let token = t.next().unwrap_err();
+    assert_eq!(token, err);
+    assert!(t.next().unwrap().is_none());
+}
+
+#[test]
+fn literal_strings() {
+    fn t(input: &str, val: &str, multiline: bool) {
+        let mut t = Tokenizer::new(input);
+        let (_, token) = t.next().unwrap().unwrap();
+        assert_eq!(
+            token,
+            Token::String {
+                src: input,
+                val: Cow::Borrowed(val),
+                multiline,
+            }
+        );
+        assert!(t.next().unwrap().is_none());
+    }
+
+    t("''", "", false);
+    t("''''''", "", true);
+    t("'''\n'''", "", true);
+    t("'a'", "a", false);
+    t("'\"a'", "\"a", false);
+    t("''''a'''", "'a", true);
+    t("'''\n'a\n'''", "'a\n", true);
+    t("'''a\n'a\r\n'''", "a\n'a\n", true);
+}
+
+#[test]
+fn basic_strings() {
+    fn t(input: &str, val: &str, multiline: bool) {
+        let mut t = Tokenizer::new(input);
+        let (_, token) = t.next().unwrap().unwrap();
+        assert_eq!(
+            token,
+            Token::String {
+                src: input,
+                val: Cow::Borrowed(val),
+                multiline,
+            }
+        );
+        assert!(t.next().unwrap().is_none());
+    }
+
+    t(r#""""#, "", false);
+    t(r#""""""""#, "", true);
+    t(r#""a""#, "a", false);
+    t(r#""""a""""#, "a", true);
+    t(r#""\t""#, "\t", false);
+    t(r#""\u0000""#, "\0", false);
+    t(r#""\U00000000""#, "\0", false);
+    t(r#""\U000A0000""#, "\u{A0000}", false);
+    t(r#""\\t""#, "\\t", false);
+    t("\"\t\"", "\t", false);
+    t("\"\"\"\n\t\"\"\"", "\t", true);
+    t("\"\"\"\\\n\"\"\"", "", true);
+    t(
+        "\"\"\"\\\n     \t   \t  \\\r\n  \t \n  \t \r\n\"\"\"",
+        "",
+        true,
+    );
+    t(r#""\r""#, "\r", false);
+    t(r#""\n""#, "\n", false);
+    t(r#""\b""#, "\u{8}", false);
+    t(r#""a\fa""#, "a\u{c}a", false);
+    t(r#""\"a""#, "\"a", false);
+    t("\"\"\"\na\"\"\"", "a", true);
+    t("\"\"\"\n\"\"\"", "", true);
+    t(r#""""a\"""b""""#, "a\"\"\"b", true);
+    err(r#""\a"#, Error::InvalidEscape(2, 'a'));
+    err("\"\\\n", Error::InvalidEscape(2, '\n'));
+    err("\"\\\r\n", Error::InvalidEscape(2, '\n'));
+    err("\"\\", Error::UnterminatedString(0));
+    err("\"\u{0}", Error::InvalidCharInString(1, '\u{0}'));
+    err(r#""\U00""#, Error::InvalidHexEscape(5, '"'));
+    err(r#""\U00"#, Error::UnterminatedString(0));
+    err(r#""\uD800"#, Error::InvalidEscapeValue(2, 0xd800));
+    err(r#""\UFFFFFFFF"#, Error::InvalidEscapeValue(2, 0xffff_ffff));
+}
+
+#[test]
+fn keylike() {
+    fn t(input: &str) {
+        let mut t = Tokenizer::new(input);
+        let (_, token) = t.next().unwrap().unwrap();
+        assert_eq!(token, Token::Keylike(input));
+        assert!(t.next().unwrap().is_none());
+    }
+    t("foo");
+    t("0bar");
+    t("bar0");
+    t("1234");
+    t("a-b");
+    t("a_B");
+    t("-_-");
+    t("___");
+}
+
+#[test]
+fn all() {
+    fn t(input: &str, expected: &[((usize, usize), Token, &str)]) {
+        let mut tokens = Tokenizer::new(input);
+        let mut actual: Vec<((usize, usize), Token, &str)> = Vec::new();
+        while let Some((span, token)) = tokens.next().unwrap() {
+            actual.push((span.into(), token, &input[span.start..span.end]));
+        }
+        for (a, b) in actual.iter().zip(expected) {
+            assert_eq!(a, b);
+        }
+        assert_eq!(actual.len(), expected.len());
+    }
+
+    t(
+        " a ",
+        &[
+            ((0, 1), Token::Whitespace(" "), " "),
+            ((1, 2), Token::Keylike("a"), "a"),
+            ((2, 3), Token::Whitespace(" "), " "),
+        ],
+    );
+
+    t(
+        " a\t [[]] \t [] {} , . =\n# foo \r\n#foo \n ",
+        &[
+            ((0, 1), Token::Whitespace(" "), " "),
+            ((1, 2), Token::Keylike("a"), "a"),
+            ((2, 4), Token::Whitespace("\t "), "\t "),
+            ((4, 5), Token::LeftBracket, "["),
+            ((5, 6), Token::LeftBracket, "["),
+            ((6, 7), Token::RightBracket, "]"),
+            ((7, 8), Token::RightBracket, "]"),
+            ((8, 11), Token::Whitespace(" \t "), " \t "),
+            ((11, 12), Token::LeftBracket, "["),
+            ((12, 13), Token::RightBracket, "]"),
+            ((13, 14), Token::Whitespace(" "), " "),
+            ((14, 15), Token::LeftBrace, "{"),
+            ((15, 16), Token::RightBrace, "}"),
+            ((16, 17), Token::Whitespace(" "), " "),
+            ((17, 18), Token::Comma, ","),
+            ((18, 19), Token::Whitespace(" "), " "),
+            ((19, 20), Token::Period, "."),
+            ((20, 21), Token::Whitespace(" "), " "),
+            ((21, 22), Token::Equals, "="),
+            ((22, 23), Token::Newline, "\n"),
+            ((23, 29), Token::Comment("# foo "), "# foo "),
+            ((29, 31), Token::Newline, "\r\n"),
+            ((31, 36), Token::Comment("#foo "), "#foo "),
+            ((36, 37), Token::Newline, "\n"),
+            ((37, 38), Token::Whitespace(" "), " "),
+        ],
+    );
+}
+
+#[test]
+fn bare_cr_bad() {
+    err("\r", Error::Unexpected(0, '\r'));
+    err("'\n", Error::NewlineInString(1));
+    err("'\u{0}", Error::InvalidCharInString(1, '\u{0}'));
+    err("'", Error::UnterminatedString(0));
+    err("\u{0}", Error::Unexpected(0, '\u{0}'));
+}
+
+#[test]
+fn bad_comment() {
+    let mut t = Tokenizer::new("#\u{0}");
+    t.next().unwrap().unwrap();
+    assert_eq!(t.next(), Err(Error::Unexpected(1, '\u{0}')));
+    assert!(t.next().unwrap().is_none());
+}
diff --git a/vendor/basic-toml/tests/valid.rs b/vendor/basic-toml/tests/valid.rs
new file mode 100644
index 000000000..c0b4479c0
--- /dev/null
+++ b/vendor/basic-toml/tests/valid.rs
@@ -0,0 +1,368 @@
+#![allow(
+    clippy::match_like_matches_macro,
+    clippy::needless_pass_by_value,
+    clippy::uninlined_format_args
+)]
+
+use serde_json::{json, Value};
+
+fn to_json(toml: Value) -> Value {
+    fn doit(s: &str, json: Value) -> Value {
+        json!({ "type": s, "value": json })
+    }
+
+    match toml {
+        Value::Null => unreachable!(),
+        Value::String(s) => doit("string", Value::String(s)),
+        Value::Number(n) => {
+            let repr = n.to_string();
+            if repr.contains('.') {
+                let float: f64 = repr.parse().unwrap();
+                let mut repr = format!("{:.15}", float);
+                repr.truncate(repr.trim_end_matches('0').len());
+                if repr.ends_with('.') {
+                    repr.push('0');
+                }
+                doit("float", Value::String(repr))
+            } else {
+                doit("integer", Value::String(repr))
+            }
+        }
+        Value::Bool(b) => doit("bool", Value::String(format!("{}", b))),
+        Value::Array(arr) => {
+            let is_table = match arr.first() {
+                Some(&Value::Object(_)) => true,
+                _ => false,
+            };
+            let json = Value::Array(arr.into_iter().map(to_json).collect());
+            if is_table {
+                json
+            } else {
+                doit("array", json)
+            }
+        }
+        Value::Object(table) => {
+            let mut map = serde_json::Map::new();
+            for (k, v) in table {
+                map.insert(k, to_json(v));
+            }
+            Value::Object(map)
+        }
+    }
+}
+
+fn run(toml_raw: &str, json_raw: &str) {
+    println!("parsing:\n{}", toml_raw);
+    let toml: Value = basic_toml::from_str(toml_raw).unwrap();
+    let json: Value = serde_json::from_str(json_raw).unwrap();
+
+    // Assert toml == json
+    let toml_json = to_json(toml.clone());
+    assert!(
+        json == toml_json,
+        "expected\n{}\ngot\n{}\n",
+        serde_json::to_string_pretty(&json).unwrap(),
+        serde_json::to_string_pretty(&toml_json).unwrap()
+    );
+
+    // Assert round trip
+    println!("round trip parse: {}", toml);
+    let toml2: Value = basic_toml::from_str(&basic_toml::to_string(&toml).unwrap()).unwrap();
+    assert_eq!(toml, toml2);
+}
+
+macro_rules! test( ($name:ident, $toml:expr, $json:expr) => (
+    #[test]
+    fn $name() { run($toml, $json); }
+) );
+
+test!(
+    array_empty,
+    include_str!("valid/array-empty.toml"),
+    include_str!("valid/array-empty.json")
+);
+test!(
+    array_nospaces,
+    include_str!("valid/array-nospaces.toml"),
+    include_str!("valid/array-nospaces.json")
+);
+test!(
+    arrays_hetergeneous,
+    include_str!("valid/arrays-hetergeneous.toml"),
+    include_str!("valid/arrays-hetergeneous.json")
+);
+#[cfg(any())]
+test!(
+    arrays,
+    include_str!("valid/arrays.toml"),
+    include_str!("valid/arrays.json")
+);
+test!(
+    arrays_nested,
+    include_str!("valid/arrays-nested.toml"),
+    include_str!("valid/arrays-nested.json")
+);
+test!(
+    array_mixed_types_ints_and_floats,
+    include_str!("valid/array-mixed-types-ints-and-floats.toml"),
+    include_str!("valid/array-mixed-types-ints-and-floats.json")
+);
+test!(
+    array_mixed_types_arrays_and_ints,
+    include_str!("valid/array-mixed-types-arrays-and-ints.toml"),
+    include_str!("valid/array-mixed-types-arrays-and-ints.json")
+);
+test!(
+    array_mixed_types_strings_and_ints,
+    include_str!("valid/array-mixed-types-strings-and-ints.toml"),
+    include_str!("valid/array-mixed-types-strings-and-ints.json")
+);
+test!(
+    empty,
+    include_str!("valid/empty.toml"),
+    include_str!("valid/empty.json")
+);
+test!(
+    bool,
+    include_str!("valid/bool.toml"),
+    include_str!("valid/bool.json")
+);
+test!(
+    comments_everywhere,
+    include_str!("valid/comments-everywhere.toml"),
+    include_str!("valid/comments-everywhere.json")
+);
+#[cfg(any())]
+test!(
+    datetime,
+    include_str!("valid/datetime.toml"),
+    include_str!("valid/datetime.json")
+);
+#[cfg(any())]
+test!(
+    example,
+    include_str!("valid/example.toml"),
+    include_str!("valid/example.json")
+);
+test!(
+    float,
+    include_str!("valid/float.toml"),
+    include_str!("valid/float.json")
+);
+#[cfg(any())]
+test!(
+    implicit_and_explicit_after,
+    include_str!("valid/implicit-and-explicit-after.toml"),
+    include_str!("valid/implicit-and-explicit-after.json")
+);
+#[cfg(any())]
+test!(
+    implicit_and_explicit_before,
+    include_str!("valid/implicit-and-explicit-before.toml"),
+    include_str!("valid/implicit-and-explicit-before.json")
+);
+test!(
+    implicit_groups,
+    include_str!("valid/implicit-groups.toml"),
+    include_str!("valid/implicit-groups.json")
+);
+test!(
+    integer,
+    include_str!("valid/integer.toml"),
+    include_str!("valid/integer.json")
+);
+test!(
+    key_equals_nospace,
+    include_str!("valid/key-equals-nospace.toml"),
+    include_str!("valid/key-equals-nospace.json")
+);
+test!(
+    key_space,
+    include_str!("valid/key-space.toml"),
+    include_str!("valid/key-space.json")
+);
+test!(
+    key_special_chars,
+    include_str!("valid/key-special-chars.toml"),
+    include_str!("valid/key-special-chars.json")
+);
+test!(
+    key_with_pound,
+    include_str!("valid/key-with-pound.toml"),
+    include_str!("valid/key-with-pound.json")
+);
+test!(
+    key_empty,
+    include_str!("valid/key-empty.toml"),
+    include_str!("valid/key-empty.json")
+);
+test!(
+    long_float,
+    include_str!("valid/long-float.toml"),
+    include_str!("valid/long-float.json")
+);
+test!(
+    long_integer,
+    include_str!("valid/long-integer.toml"),
+    include_str!("valid/long-integer.json")
+);
+test!(
+    multiline_string,
+    include_str!("valid/multiline-string.toml"),
+    include_str!("valid/multiline-string.json")
+);
+test!(
+    raw_multiline_string,
+    include_str!("valid/raw-multiline-string.toml"),
+    include_str!("valid/raw-multiline-string.json")
+);
+test!(
+    raw_string,
+    include_str!("valid/raw-string.toml"),
+    include_str!("valid/raw-string.json")
+);
+test!(
+    string_empty,
+    include_str!("valid/string-empty.toml"),
+    include_str!("valid/string-empty.json")
+);
+test!(
+    string_escapes,
+    include_str!("valid/string-escapes.toml"),
+    include_str!("valid/string-escapes.json")
+);
+test!(
+    string_simple,
+    include_str!("valid/string-simple.toml"),
+    include_str!("valid/string-simple.json")
+);
+test!(
+    string_with_pound,
+    include_str!("valid/string-with-pound.toml"),
+    include_str!("valid/string-with-pound.json")
+);
+test!(
+    table_array_implicit,
+    include_str!("valid/table-array-implicit.toml"),
+    include_str!("valid/table-array-implicit.json")
+);
+test!(
+    table_array_many,
+    include_str!("valid/table-array-many.toml"),
+    include_str!("valid/table-array-many.json")
+);
+test!(
+    table_array_nest,
+    include_str!("valid/table-array-nest.toml"),
+    include_str!("valid/table-array-nest.json")
+);
+test!(
+    table_array_one,
+    include_str!("valid/table-array-one.toml"),
+    include_str!("valid/table-array-one.json")
+);
+test!(
+    table_empty,
+    include_str!("valid/table-empty.toml"),
+    include_str!("valid/table-empty.json")
+);
+test!(
+    table_sub_empty,
+    include_str!("valid/table-sub-empty.toml"),
+    include_str!("valid/table-sub-empty.json")
+);
+test!(
+    table_multi_empty,
+    include_str!("valid/table-multi-empty.toml"),
+    include_str!("valid/table-multi-empty.json")
+);
+test!(
+    table_whitespace,
+    include_str!("valid/table-whitespace.toml"),
+    include_str!("valid/table-whitespace.json")
+);
+test!(
+    table_with_pound,
+    include_str!("valid/table-with-pound.toml"),
+    include_str!("valid/table-with-pound.json")
+);
+test!(
+    unicode_escape,
+    include_str!("valid/unicode-escape.toml"),
+    include_str!("valid/unicode-escape.json")
+);
+test!(
+    unicode_literal,
+    include_str!("valid/unicode-literal.toml"),
+    include_str!("valid/unicode-literal.json")
+);
+#[cfg(any())]
+test!(
+    hard_example,
+    include_str!("valid/hard_example.toml"),
+    include_str!("valid/hard_example.json")
+);
+#[cfg(any())]
+test!(
+    example2,
+    include_str!("valid/example2.toml"),
+    include_str!("valid/example2.json")
+);
+#[cfg(any())]
+test!(
+    example3,
+    include_str!("valid/example-v0.3.0.toml"),
+    include_str!("valid/example-v0.3.0.json")
+);
+#[cfg(any())]
+test!(
+    example4,
+    include_str!("valid/example-v0.4.0.toml"),
+    include_str!("valid/example-v0.4.0.json")
+);
+#[cfg(any())]
+test!(
+    example_bom,
+    include_str!("valid/example-bom.toml"),
+    include_str!("valid/example.json")
+);
+
+#[cfg(any())]
+test!(
+    datetime_truncate,
+    include_str!("valid/datetime-truncate.toml"),
+    include_str!("valid/datetime-truncate.json")
+);
+test!(
+    key_quote_newline,
+    include_str!("valid/key-quote-newline.toml"),
+    include_str!("valid/key-quote-newline.json")
+);
+test!(
+    table_array_nest_no_keys,
+    include_str!("valid/table-array-nest-no-keys.toml"),
+    include_str!("valid/table-array-nest-no-keys.json")
+);
+test!(
+    dotted_keys,
+    include_str!("valid/dotted-keys.toml"),
+    include_str!("valid/dotted-keys.json")
+);
+
+test!(
+    quote_surrounded_value,
+    include_str!("valid/quote-surrounded-value.toml"),
+    include_str!("valid/quote-surrounded-value.json")
+);
+
+test!(
+    float_exponent,
+    include_str!("valid/float-exponent.toml"),
+    include_str!("valid/float-exponent.json")
+);
+
+test!(
+    string_delim_end,
+    include_str!("valid/string-delim-end.toml"),
+    include_str!("valid/string-delim-end.json")
+);
diff --git a/vendor/basic-toml/tests/valid/array-empty.json b/vendor/basic-toml/tests/valid/array-empty.json
new file mode 100644
index 000000000..2fbf2567f
--- /dev/null
+++ b/vendor/basic-toml/tests/valid/array-empty.json
@@ -0,0 +1,11 @@
+{
+    "thevoid": { "type": "array", "value": [
+        {"type": "array", "value": [
+            {"type": "array", "value": [
+                {"type": "array", "value": [
+                    {"type": "array", "value": []}
+                ]}
+            ]}
+        ]}
+    ]}
+}
diff --git a/vendor/basic-toml/tests/valid/array-empty.toml b/vendor/basic-toml/tests/valid/array-empty.toml
new file mode 100644
index 000000000..fa58dc63d
--- /dev/null
+++ b/vendor/basic-toml/tests/valid/array-empty.toml
@@ -0,0 +1 @@
+thevoid = [[[[[]]]]]
diff --git a/vendor/basic-toml/tests/valid/array-mixed-types-arrays-and-ints.json b/vendor/basic-toml/tests/valid/array-mixed-types-arrays-and-ints.json
new file mode 100644
index 000000000..10074ec86
--- /dev/null
+++ b/vendor/basic-toml/tests/valid/array-mixed-types-arrays-and-ints.json
@@ -0,0 +1,11 @@
+{
+    "arrays-and-ints": {
+        "type": "array",
+        "value": [
+            {"type": "integer", "value": "1"},
+            {"type": "array", "value": [
+                { "type": "string", "value":"Arrays are not integers."}
+            ]}
+        ]
+    }
+}
diff --git a/vendor/basic-toml/tests/valid/array-mixed-types-arrays-and-ints.toml b/vendor/basic-toml/tests/valid/array-mixed-types-arrays-and-ints.toml
new file mode 100644
index 000000000..051ec7313
--- /dev/null
+++ b/vendor/basic-toml/tests/valid/array-mixed-types-arrays-and-ints.toml
@@ -0,0 +1 @@
+arrays-and-ints =  [1, ["Arrays are not integers."]]
diff --git a/vendor/basic-toml/tests/valid/array-mixed-types-ints-and-floats.json b/vendor/basic-toml/tests/valid/array-mixed-types-ints-and-floats.json
new file mode 100644
index 000000000..c90665ead
--- /dev/null
+++ b/vendor/basic-toml/tests/valid/array-mixed-types-ints-and-floats.json
@@ -0,0 +1,9 @@
+{
+    "ints-and-floats": {
+        "type": "array",
+        "value": [
+            {"type": "integer", "value": "1"},
+            {"type": "float", "value": "1.1"}
+        ]
+    }
+}
diff --git a/vendor/basic-toml/tests/valid/array-mixed-types-ints-and-floats.toml b/vendor/basic-toml/tests/valid/array-mixed-types-ints-and-floats.toml
new file mode 100644
index 000000000..a5aa9b7a0
--- /dev/null
+++ b/vendor/basic-toml/tests/valid/array-mixed-types-ints-and-floats.toml
@@ -0,0 +1 @@
+ints-and-floats = [1, 1.1]
diff --git a/vendor/basic-toml/tests/valid/array-mixed-types-strings-and-ints.json b/vendor/basic-toml/tests/valid/array-mixed-types-strings-and-ints.json
new file mode 100644
index 000000000..8ae322ed4
--- /dev/null
+++ b/vendor/basic-toml/tests/valid/array-mixed-types-strings-and-ints.json
@@ -0,0 +1,9 @@
+{
+    "strings-and-ints": {
+        "type": "array",
+        "value": [
+            {"type": "string", "value": "hi"},
+            {"type": "integer", "value": "42"}
+        ]
+    }
+}
diff --git a/vendor/basic-toml/tests/valid/array-mixed-types-strings-and-ints.toml b/vendor/basic-toml/tests/valid/array-mixed-types-strings-and-ints.toml
new file mode 100644
index 000000000..f34830805
--- /dev/null
+++ b/vendor/basic-toml/tests/valid/array-mixed-types-strings-and-ints.toml
@@ -0,0 +1 @@
+strings-and-ints = ["hi", 42]
diff --git a/vendor/basic-toml/tests/valid/array-nospaces.json b/vendor/basic-toml/tests/valid/array-nospaces.json
new file mode 100644
index 000000000..1833d61c5
--- /dev/null
+++ b/vendor/basic-toml/tests/valid/array-nospaces.json
@@ -0,0 +1,10 @@
+{
+    "ints": {
+        "type": "array",
+        "value": [
+            {"type": "integer", "value": "1"},
+            {"type": "integer", "value": "2"},
+            {"type": "integer", "value": "3"}
+        ]
+    }
+}
diff --git a/vendor/basic-toml/tests/valid/array-nospaces.toml b/vendor/basic-toml/tests/valid/array-nospaces.toml
new file mode 100644
index 000000000..66189367f
--- /dev/null
+++ b/vendor/basic-toml/tests/valid/array-nospaces.toml
@@ -0,0 +1 @@
+ints = [1,2,3]
diff --git a/vendor/basic-toml/tests/valid/arrays-hetergeneous.json b/vendor/basic-toml/tests/valid/arrays-hetergeneous.json
new file mode 100644
index 000000000..478fa5c70
--- /dev/null
+++ b/vendor/basic-toml/tests/valid/arrays-hetergeneous.json
@@ -0,0 +1,19 @@
+{
+    "mixed": {
+        "type": "array",
+        "value": [
+            {"type": "array", "value": [
+                {"type": "integer", "value": "1"},
+                {"type": "integer", "value": "2"}
+            ]},
+            {"type": "array", "value": [
+                {"type": "string", "value": "a"},
+                {"type": "string", "value": "b"}
+            ]},
+            {"type": "array", "value": [
+                {"type": "float", "value": "1.1"},
+                {"type": "float", "value": "2.1"}
+            ]}
+        ]
+    }
+}
diff --git a/vendor/basic-toml/tests/valid/arrays-hetergeneous.toml b/vendor/basic-toml/tests/valid/arrays-hetergeneous.toml
new file mode 100644
index 000000000..a246fcf1d
--- /dev/null
+++ b/vendor/basic-toml/tests/valid/arrays-hetergeneous.toml
@@ -0,0 +1 @@
+mixed = [[1, 2], ["a", "b"], [1.1, 2.1]]
diff --git a/vendor/basic-toml/tests/valid/arrays-nested.json b/vendor/basic-toml/tests/valid/arrays-nested.json
new file mode 100644
index 000000000..d21920cc3
--- /dev/null
+++ b/vendor/basic-toml/tests/valid/arrays-nested.json
@@ -0,0 +1,13 @@
+{
+    "nest": {
+        "type": "array",
+        "value": [
+            {"type": "array", "value": [
+                {"type": "string", "value": "a"}
+            ]},
+            {"type": "array", "value": [
+                {"type": "string", "value": "b"}
+            ]}
+        ]
+    }
+}
diff --git a/vendor/basic-toml/tests/valid/arrays-nested.toml b/vendor/basic-toml/tests/valid/arrays-nested.toml
new file mode 100644
index 000000000..ce3302249
--- /dev/null
+++ b/vendor/basic-toml/tests/valid/arrays-nested.toml
@@ -0,0 +1 @@
+nest = [["a"], ["b"]]
diff --git a/vendor/basic-toml/tests/valid/arrays.json b/vendor/basic-toml/tests/valid/arrays.json
new file mode 100644
index 000000000..58aedbccb
--- /dev/null
+++ b/vendor/basic-toml/tests/valid/arrays.json
@@ -0,0 +1,34 @@
+{
+    "ints": {
+        "type": "array",
+        "value": [
+            {"type": "integer", "value": "1"},
+            {"type": "integer", "value": "2"},
+            {"type": "integer", "value": "3"}
+        ]
+    },
+    "floats": {
+        "type": "array",
+        "value": [
+            {"type": "float", "value": "1.1"},
+            {"type": "float", "value": "2.1"},
+            {"type": "float", "value": "3.1"}
+        ]
+    },
+    "strings": {
+        "type": "array",
+        "value": [
+            {"type": "string", "value": "a"},
+            {"type": "string", "value": "b"},
+            {"type": "string", "value": "c"}
+        ]
+    },
+    "dates": {
+        "type": "array",
+        "value": [
+            {"type": "datetime", "value": "1987-07-05T17:45:00Z"},
+            {"type": "datetime", "value": "1979-05-27T07:32:00Z"},
+            {"type": "datetime", "value": "2006-06-01T11:00:00Z"}
+        ]
+    }
+}
diff --git a/vendor/basic-toml/tests/valid/arrays.toml b/vendor/basic-toml/tests/valid/arrays.toml
new file mode 100644
index 000000000..c435f57b6
--- /dev/null
+++ b/vendor/basic-toml/tests/valid/arrays.toml
@@ -0,0 +1,8 @@
+ints = [1, 2, 3]
+floats = [1.1, 2.1, 3.1]
+strings = ["a", "b", "c"]
+dates = [
+  1987-07-05T17:45:00Z,
+  1979-05-27T07:32:00Z,
+  2006-06-01T11:00:00Z,
+]
diff --git a/vendor/basic-toml/tests/valid/bool.json b/vendor/basic-toml/tests/valid/bool.json
new file mode 100644
index 000000000..ae368e949
--- /dev/null
+++ b/vendor/basic-toml/tests/valid/bool.json
@@ -0,0 +1,4 @@
+{
+    "f": {"type": "bool", "value": "false"},
+    "t": {"type": "bool", "value": "true"}
+}
diff --git a/vendor/basic-toml/tests/valid/bool.toml b/vendor/basic-toml/tests/valid/bool.toml
new file mode 100644
index 000000000..a8a829b34
--- /dev/null
+++ b/vendor/basic-toml/tests/valid/bool.toml
@@ -0,0 +1,2 @@
+t = true
+f = false
diff --git a/vendor/basic-toml/tests/valid/comments-everywhere.json b/vendor/basic-toml/tests/valid/comments-everywhere.json
new file mode 100644
index 000000000..e69a2e958
--- /dev/null
+++ b/vendor/basic-toml/tests/valid/comments-everywhere.json
@@ -0,0 +1,12 @@
+{
+    "group": {
+        "answer": {"type": "integer", "value": "42"},
+        "more": {
+            "type": "array",
+            "value": [
+                {"type": "integer", "value": "42"},
+                {"type": "integer", "value": "42"}
+            ]
+        }
+    }
+}
diff --git a/vendor/basic-toml/tests/valid/comments-everywhere.toml b/vendor/basic-toml/tests/valid/comments-everywhere.toml
new file mode 100644
index 000000000..a13951d60
--- /dev/null
+++ b/vendor/basic-toml/tests/valid/comments-everywhere.toml
@@ -0,0 +1,24 @@
+# Top comment.
+  # Top comment.
+# Top comment.
+
+# [no-extraneous-groups-please]
+
+[group] # Comment
+answer = 42 # Comment
+# no-extraneous-keys-please = 999
+# In between comment.
+more = [ # Comment
+  # What about multiple # comments?
+  # Can you handle it?
+  #
+          # Evil.
+# Evil.
+  42, 42, # Comments within arrays are fun.
+  # What about multiple # comments?
+  # Can you handle it?
+  #
+          # Evil.
+# Evil.
+# ] Did I fool you?
+] # Hopefully not.
diff --git a/vendor/basic-toml/tests/valid/datetime-truncate.json b/vendor/basic-toml/tests/valid/datetime-truncate.json
new file mode 100644
index 000000000..8c512e10c
--- /dev/null
+++ b/vendor/basic-toml/tests/valid/datetime-truncate.json
@@ -0,0 +1,6 @@
+{
+    "bestdayever": {
+        "type": "datetime",
+        "value": "1987-07-05T17:45:00.123456789Z"
+    }
+}
diff --git a/vendor/basic-toml/tests/valid/datetime-truncate.toml b/vendor/basic-toml/tests/valid/datetime-truncate.toml
new file mode 100644
index 000000000..05de84105
--- /dev/null
+++ b/vendor/basic-toml/tests/valid/datetime-truncate.toml
@@ -0,0 +1 @@
+bestdayever = 1987-07-05T17:45:00.123456789012345Z
diff --git a/vendor/basic-toml/tests/valid/datetime.json b/vendor/basic-toml/tests/valid/datetime.json
new file mode 100644
index 000000000..2ca93ce96
--- /dev/null
+++ b/vendor/basic-toml/tests/valid/datetime.json
@@ -0,0 +1,3 @@
+{
+    "bestdayever": {"type": "datetime", "value": "1987-07-05T17:45:00Z"}
+}
diff --git a/vendor/basic-toml/tests/valid/datetime.toml b/vendor/basic-toml/tests/valid/datetime.toml
new file mode 100644
index 000000000..2e993407d
--- /dev/null
+++ b/vendor/basic-toml/tests/valid/datetime.toml
@@ -0,0 +1 @@
+bestdayever = 1987-07-05T17:45:00Z
diff --git a/vendor/basic-toml/tests/valid/dotted-keys.json b/vendor/basic-toml/tests/valid/dotted-keys.json
new file mode 100644
index 000000000..cf9dd048f
--- /dev/null
+++ b/vendor/basic-toml/tests/valid/dotted-keys.json
@@ -0,0 +1,34 @@
+{
+  "a": {
+    "b": {
+      "type": "integer",
+      "value": "123"
+    }
+  },
+  "table": {
+    "a": {
+      "b": {
+        "c": {
+          "type": "integer",
+          "value": "1"
+        },
+        "d": {
+          "type": "integer",
+          "value": "2"
+        }
+      }
+    },
+    "in": {
+      "type": {
+        "color": {
+          "type": "string",
+          "value": "blue"
+        },
+        "name": {
+          "type": "string",
+          "value": "cat"
+        }
+      }
+    }
+  }
+}
diff --git a/vendor/basic-toml/tests/valid/dotted-keys.toml b/vendor/basic-toml/tests/valid/dotted-keys.toml
new file mode 100644
index 000000000..234d64c8d
--- /dev/null
+++ b/vendor/basic-toml/tests/valid/dotted-keys.toml
@@ -0,0 +1,7 @@
+a.b = 123
+
+[table]
+a.b.c = 1
+a  .  b  .  d = 2
+
+in = { type.name = "cat", type.color = "blue" }
diff --git a/vendor/basic-toml/tests/valid/empty.json b/vendor/basic-toml/tests/valid/empty.json
new file mode 100644
index 000000000..0967ef424
--- /dev/null
+++ b/vendor/basic-toml/tests/valid/empty.json
@@ -0,0 +1 @@
+{}
diff --git a/vendor/basic-toml/tests/valid/empty.toml b/vendor/basic-toml/tests/valid/empty.toml
new file mode 100644
index 000000000..e69de29bb
--- /dev/null
+++ b/vendor/basic-toml/tests/valid/empty.toml
diff --git a/vendor/basic-toml/tests/valid/example-bom.toml b/vendor/basic-toml/tests/valid/example-bom.toml
new file mode 100644
index 000000000..fb5ac815c
--- /dev/null
+++ b/vendor/basic-toml/tests/valid/example-bom.toml
@@ -0,0 +1,5 @@
+best-day-ever = 1987-07-05T17:45:00Z
+
+[numtheory]
+boring = false
+perfection = [6, 28, 496]
diff --git a/vendor/basic-toml/tests/valid/example-v0.3.0.json b/vendor/basic-toml/tests/valid/example-v0.3.0.json
new file mode 100644
index 000000000..1d9dcb581
--- /dev/null
+++ b/vendor/basic-toml/tests/valid/example-v0.3.0.json
@@ -0,0 +1 @@
+{"Array":{"key1":{"type":"array","value":[{"type":"integer","value":"1"},{"type":"integer","value":"2"},{"type":"integer","value":"3"}]},"key2":{"type":"array","value":[{"type":"string","value":"red"},{"type":"string","value":"yellow"},{"type":"string","value":"green"}]},"key3":{"type":"array","value":[{"type":"array","value":[{"type":"integer","value":"1"},{"type":"integer","value":"2"}]},{"type":"array","value":[{"type":"integer","value":"3"},{"type":"integer","value":"4"},{"type":"integer","value":"5"}]}]},"key4":{"type":"array","value":[{"type":"array","value":[{"type":"integer","value":"1"},{"type":"integer","value":"2"}]},{"type":"array","value":[{"type":"string","value":"a"},{"type":"string","value":"b"},{"type":"string","value":"c"}]}]},"key5":{"type":"array","value":[{"type":"integer","value":"1"},{"type":"integer","value":"2"},{"type":"integer","value":"3"}]},"key6":{"type":"array","value":[{"type":"integer","value":"1"},{"type":"integer","value":"2"}]}},"Booleans":{"False":{"type":"bool","value":"false"},"True":{"type":"bool","value":"true"}},"Datetime":{"key1":{"type":"datetime","value":"1979-05-27T07:32:00Z"}},"Float":{"both":{},"exponent":{},"fractional":{"key1":{"type":"float","value":"1.0"},"key2":{"type":"float","value":"3.1415"},"key3":{"type":"float","value":"-0.01"}}},"Integer":{"key1":{"type":"integer","value":"99"},"key2":{"type":"integer","value":"42"},"key3":{"type":"integer","value":"0"},"key4":{"type":"integer","value":"-17"}},"String":{"Literal":{"Multiline":{"lines":{"type":"string","value":"The first newline is\ntrimmed in raw strings.\n   All other whitespace\n   is preserved.\n"},"regex2":{"type":"string","value":"I [dw]on't need \\d{2} apples"}},"quoted":{"type":"string","value":"Tom \"Dubs\" Preston-Werner"},"regex":{"type":"string","value":"\u003c\\i\\c*\\s*\u003e"},"winpath":{"type":"string","value":"C:\\Users\\nodejs\\templates"},"winpath2":{"type":"string","value":"\\\\ServerX\\admin$\\system32\\"}},"Multiline":{"key1":{"type":"string","value":"One\nTwo"},"key2":{"type":"string","value":"One\nTwo"},"key3":{"type":"string","value":"One\nTwo"}},"Multilined":{"Singleline":{"key1":{"type":"string","value":"The quick brown fox jumps over the lazy dog."},"key2":{"type":"string","value":"The quick brown fox jumps over the lazy dog."},"key3":{"type":"string","value":"The quick brown fox jumps over the lazy dog."}}},"basic":{"type":"string","value":"I'm a string. \"You can quote me\". Name\u0009José\nLocation\u0009SF."}},"Table":{"key":{"type":"string","value":"value"}},"dog":{"tater":{"type":{"type":"string","value":"pug"}}},"fruit":[{"name":{"type":"string","value":"apple"},"physical":{"color":{"type":"string","value":"red"},"shape":{"type":"string","value":"round"}},"variety":[{"name":{"type":"string","value":"red delicious"}},{"name":{"type":"string","value":"granny smith"}}]},{"name":{"type":"string","value":"banana"},"variety":[{"name":{"type":"string","value":"plantain"}}]}],"products":[{"name":{"type":"string","value":"Hammer"},"sku":{"type":"integer","value":"738594937"}},{},{"color":{"type":"string","value":"gray"},"name":{"type":"string","value":"Nail"},"sku":{"type":"integer","value":"284758393"}}],"x":{"y":{"z":{"w":{}}}}}
diff --git a/vendor/basic-toml/tests/valid/example-v0.3.0.toml b/vendor/basic-toml/tests/valid/example-v0.3.0.toml
new file mode 100644
index 000000000..76aacc31a
--- /dev/null
+++ b/vendor/basic-toml/tests/valid/example-v0.3.0.toml
@@ -0,0 +1,182 @@
+# Comment
+# I am a comment. Hear me roar. Roar.
+
+# Table
+# Tables (also known as hash tables or dictionaries) are collections of key/value pairs.
+# They appear in square brackets on a line by themselves.
+
+[Table]
+
+key = "value" # Yeah, you can do this.
+
+# Nested tables are denoted by table names with dots in them. Name your tables whatever crap you please, just don't use #, ., [ or ].
+
+[dog.tater]
+type = "pug"
+
+# You don't need to specify all the super-tables if you don't want to. TOML knows how to do it for you.
+
+# [x] you
+# [x.y] don't
+# [x.y.z] need these
+[x.y.z.w] # for this to work
+
+# String
+# There are four ways to express strings: basic, multi-line basic, literal, and multi-line literal.
+# All strings must contain only valid UTF-8 characters.
+
+[String]
+basic = "I'm a string. \"You can quote me\". Name\tJos\u00E9\nLocation\tSF."
+
+[String.Multiline]
+
+# The following strings are byte-for-byte equivalent:
+key1 = "One\nTwo"
+key2 = """One\nTwo"""
+key3 = """
+One
+Two"""
+
+[String.Multilined.Singleline]
+
+# The following strings are byte-for-byte equivalent:
+key1 = "The quick brown fox jumps over the lazy dog."
+
+key2 = """
+The quick brown \
+
+
+  fox jumps over \
+    the lazy dog."""
+
+key3 = """\
+       The quick brown \
+       fox jumps over \
+       the lazy dog.\
+       """
+
+[String.Literal]
+
+# What you see is what you get.
+winpath  = 'C:\Users\nodejs\templates'
+winpath2 = '\\ServerX\admin$\system32\'
+quoted   = 'Tom "Dubs" Preston-Werner'
+regex    = '<\i\c*\s*>'
+
+
+[String.Literal.Multiline]
+
+regex2 = '''I [dw]on't need \d{2} apples'''
+lines  = '''
+The first newline is
+trimmed in raw strings.
+   All other whitespace
+   is preserved.
+'''
+
+# Integer
+# Integers are whole numbers. Positive numbers may be prefixed with a plus sign.
+# Negative numbers are prefixed with a minus sign.
+
+[Integer]
+key1 = +99
+key2 = 42
+key3 = 0
+key4 = -17
+
+# Float
+# A float consists of an integer part (which may be prefixed with a plus or minus sign)
+# followed by a fractional part and/or an exponent part.
+
+[Float.fractional]
+
+# fractional
+key1 = +1.0
+key2 = 3.1415
+key3 = -0.01
+
+[Float.exponent]
+
+# exponent
+#key1 = 5e+22
+#key2 = 1e6
+#key3 = -2E-2
+
+[Float.both]
+
+# both
+#key = 6.626e-34
+
+# Boolean
+# Booleans are just the tokens you're used to. Always lowercase.
+
+[Booleans]
+True = true
+False = false
+
+# Datetime
+# Datetimes are RFC 3339 dates.
+
+[Datetime]
+key1 = 1979-05-27T07:32:00Z
+#key2 = 1979-05-27T00:32:00-07:00
+#key3 = 1979-05-27T00:32:00.999999-07:00
+
+# Array
+# Arrays are square brackets with other primitives inside. Whitespace is ignored. Elements are separated by commas. Data types may not be mixed.
+
+[Array]
+key1 = [ 1, 2, 3 ]
+key2 = [ "red", "yellow", "green" ]
+key3 = [ [ 1, 2 ], [3, 4, 5] ]
+key4 = [ [ 1, 2 ], ["a", "b", "c"] ] # this is ok
+
+#Arrays can also be multiline. So in addition to ignoring whitespace, arrays also ignore newlines between the brackets.
+# Terminating commas are ok before the closing bracket.
+
+key5 = [
+  1, 2, 3
+]
+key6 = [
+  1,
+  2, # this is ok
+]
+
+# Array of Tables
+# These can be expressed by using a table name in double brackets.
+# Each table with the same double bracketed name will be an element in the array.
+# The tables are inserted in the order encountered.
+
+[[products]]
+name = "Hammer"
+sku = 738594937
+
+[[products]]
+
+[[products]]
+name = "Nail"
+sku = 284758393
+color = "gray"
+
+
+# You can create nested arrays of tables as well.
+
+[[fruit]]
+  name = "apple"
+
+  [fruit.physical]
+    color = "red"
+    shape = "round"
+
+  [[fruit.variety]]
+    name = "red delicious"
+
+  [[fruit.variety]]
+    name = "granny smith"
+
+[[fruit]]
+  name = "banana"
+
+  [[fruit.variety]]
+    name = "plantain"
+
diff --git a/vendor/basic-toml/tests/valid/example-v0.4.0.json b/vendor/basic-toml/tests/valid/example-v0.4.0.json
new file mode 100644
index 000000000..d5cac343a
--- /dev/null
+++ b/vendor/basic-toml/tests/valid/example-v0.4.0.json
@@ -0,0 +1 @@
+{"array":{"key1":{"type":"array","value":[{"type":"integer","value":"1"},{"type":"integer","value":"2"},{"type":"integer","value":"3"}]},"key2":{"type":"array","value":[{"type":"string","value":"red"},{"type":"string","value":"yellow"},{"type":"string","value":"green"}]},"key3":{"type":"array","value":[{"type":"array","value":[{"type":"integer","value":"1"},{"type":"integer","value":"2"}]},{"type":"array","value":[{"type":"integer","value":"3"},{"type":"integer","value":"4"},{"type":"integer","value":"5"}]}]},"key4":{"type":"array","value":[{"type":"array","value":[{"type":"integer","value":"1"},{"type":"integer","value":"2"}]},{"type":"array","value":[{"type":"string","value":"a"},{"type":"string","value":"b"},{"type":"string","value":"c"}]}]},"key5":{"type":"array","value":[{"type":"integer","value":"1"},{"type":"integer","value":"2"},{"type":"integer","value":"3"}]},"key6":{"type":"array","value":[{"type":"integer","value":"1"},{"type":"integer","value":"2"}]}},"boolean":{"False":{"type":"bool","value":"false"},"True":{"type":"bool","value":"true"}},"datetime":{},"float":{"both":{},"exponent":{},"fractional":{"key1":{"type":"float","value":"1.0"},"key2":{"type":"float","value":"3.1415"},"key3":{"type":"float","value":"-0.01"}},"underscores":{}},"fruit":[{"name":{"type":"string","value":"apple"},"physical":{"color":{"type":"string","value":"red"},"shape":{"type":"string","value":"round"}},"variety":[{"name":{"type":"string","value":"red delicious"}},{"name":{"type":"string","value":"granny smith"}}]},{"name":{"type":"string","value":"banana"},"variety":[{"name":{"type":"string","value":"plantain"}}]}],"integer":{"key1":{"type":"integer","value":"99"},"key2":{"type":"integer","value":"42"},"key3":{"type":"integer","value":"0"},"key4":{"type":"integer","value":"-17"},"underscores":{"key1":{"type":"integer","value":"1000"},"key2":{"type":"integer","value":"5349221"},"key3":{"type":"integer","value":"12345"}}},"products":[{"name":{"type":"string","value":"Hammer"},"sku":{"type":"integer","value":"738594937"}},{},{"color":{"type":"string","value":"gray"},"name":{"type":"string","value":"Nail"},"sku":{"type":"integer","value":"284758393"}}],"string":{"basic":{"basic":{"type":"string","value":"I'm a string. \"You can quote me\". Name\u0009José\nLocation\u0009SF."}},"literal":{"multiline":{"lines":{"type":"string","value":"The first newline is\ntrimmed in raw strings.\n   All other whitespace\n   is preserved.\n"},"regex2":{"type":"string","value":"I [dw]on't need \\d{2} apples"}},"quoted":{"type":"string","value":"Tom \"Dubs\" Preston-Werner"},"regex":{"type":"string","value":"\u003c\\i\\c*\\s*\u003e"},"winpath":{"type":"string","value":"C:\\Users\\nodejs\\templates"},"winpath2":{"type":"string","value":"\\\\ServerX\\admin$\\system32\\"}},"multiline":{"continued":{"key1":{"type":"string","value":"The quick brown fox jumps over the lazy dog."},"key2":{"type":"string","value":"The quick brown fox jumps over the lazy dog."},"key3":{"type":"string","value":"The quick brown fox jumps over the lazy dog."}},"key1":{"type":"string","value":"One\nTwo"},"key2":{"type":"string","value":"One\nTwo"},"key3":{"type":"string","value":"One\nTwo"}}},"table":{"inline":{"name":{"first":{"type":"string","value":"Tom"},"last":{"type":"string","value":"Preston-Werner"}},"point":{"x":{"type":"integer","value":"1"},"y":{"type":"integer","value":"2"}}},"key":{"type":"string","value":"value"},"subtable":{"key":{"type":"string","value":"another value"}}},"x":{"y":{"z":{"w":{}}}}}
diff --git a/vendor/basic-toml/tests/valid/example-v0.4.0.toml b/vendor/basic-toml/tests/valid/example-v0.4.0.toml
new file mode 100644
index 000000000..69f1c1b0f
--- /dev/null
+++ b/vendor/basic-toml/tests/valid/example-v0.4.0.toml
@@ -0,0 +1,236 @@
+################################################################################
+## Comment
+
+# Speak your mind with the hash symbol. They go from the symbol to the end of
+# the line.
+
+
+################################################################################
+## Table
+
+# Tables (also known as hash tables or dictionaries) are collections of
+# key/value pairs. They appear in square brackets on a line by themselves.
+
+[table]
+
+key = "value" # Yeah, you can do this.
+
+# Nested tables are denoted by table names with dots in them. Name your tables
+# whatever crap you please, just don't use #, ., [ or ].
+
+[table.subtable]
+
+key = "another value"
+
+# You don't need to specify all the super-tables if you don't want to. TOML
+# knows how to do it for you.
+
+# [x] you
+# [x.y] don't
+# [x.y.z] need these
+[x.y.z.w] # for this to work
+
+
+################################################################################
+## Inline Table
+
+# Inline tables provide a more compact syntax for expressing tables. They are
+# especially useful for grouped data that can otherwise quickly become verbose.
+# Inline tables are enclosed in curly braces `{` and `}`. No newlines are
+# allowed between the curly braces unless they are valid within a value.
+
+[table.inline]
+
+name = { first = "Tom", last = "Preston-Werner" }
+point = { x = 1, y = 2 }
+
+
+################################################################################
+## String
+
+# There are four ways to express strings: basic, multi-line basic, literal, and
+# multi-line literal. All strings must contain only valid UTF-8 characters.
+
+[string.basic]
+
+basic = "I'm a string. \"You can quote me\". Name\tJos\u00E9\nLocation\tSF."
+
+[string.multiline]
+
+# The following strings are byte-for-byte equivalent:
+key1 = "One\nTwo"
+key2 = """One\nTwo"""
+key3 = """
+One
+Two"""
+
+[string.multiline.continued]
+
+# The following strings are byte-for-byte equivalent:
+key1 = "The quick brown fox jumps over the lazy dog."
+
+key2 = """
+The quick brown \
+
+
+  fox jumps over \
+    the lazy dog."""
+
+key3 = """\
+       The quick brown \
+       fox jumps over \
+       the lazy dog.\
+       """
+
+[string.literal]
+
+# What you see is what you get.
+winpath  = 'C:\Users\nodejs\templates'
+winpath2 = '\\ServerX\admin$\system32\'
+quoted   = 'Tom "Dubs" Preston-Werner'
+regex    = '<\i\c*\s*>'
+
+
+[string.literal.multiline]
+
+regex2 = '''I [dw]on't need \d{2} apples'''
+lines  = '''
+The first newline is
+trimmed in raw strings.
+   All other whitespace
+   is preserved.
+'''
+
+
+################################################################################
+## Integer
+
+# Integers are whole numbers. Positive numbers may be prefixed with a plus sign.
+# Negative numbers are prefixed with a minus sign.
+
+[integer]
+
+key1 = +99
+key2 = 42
+key3 = 0
+key4 = -17
+
+[integer.underscores]
+
+# For large numbers, you may use underscores to enhance readability. Each
+# underscore must be surrounded by at least one digit.
+key1 = 1_000
+key2 = 5_349_221
+key3 = 1_2_3_4_5     # valid but inadvisable
+
+
+################################################################################
+## Float
+
+# A float consists of an integer part (which may be prefixed with a plus or
+# minus sign) followed by a fractional part and/or an exponent part.
+
+[float.fractional]
+
+key1 = +1.0
+key2 = 3.1415
+key3 = -0.01
+
+[float.exponent]
+
+[float.both]
+
+[float.underscores]
+
+
+################################################################################
+## Boolean
+
+# Booleans are just the tokens you're used to. Always lowercase.
+
+[boolean]
+
+True = true
+False = false
+
+
+################################################################################
+## Datetime
+
+# Datetimes are RFC 3339 dates.
+
+[datetime]
+
+#key1 = 1979-05-27T07:32:00Z
+#key2 = 1979-05-27T00:32:00-07:00
+#key3 = 1979-05-27T00:32:00.999999-07:00
+
+
+################################################################################
+## Array
+
+# Arrays are square brackets with other primitives inside. Whitespace is
+# ignored. Elements are separated by commas. Since 2019-11-06 data types can be
+# mixed.
+
+[array]
+
+key1 = [ 1, 2, 3 ]
+key2 = [ "red", "yellow", "green" ]
+key3 = [ [ 1, 2 ], [3, 4, 5] ]
+key4 = [ [ 1, 2 ], ["a", "b", "c"] ] # this is ok
+
+# Arrays can also be multiline. So in addition to ignoring whitespace, arrays
+# also ignore newlines between the brackets.  Terminating commas are ok before
+# the closing bracket.
+
+key5 = [
+  1, 2, 3
+]
+key6 = [
+  1,
+  2, # this is ok
+]
+
+
+################################################################################
+## Array of Tables
+
+# These can be expressed by using a table name in double brackets. Each table
+# with the same double bracketed name will be an element in the array. The
+# tables are inserted in the order encountered.
+
+[[products]]
+
+name = "Hammer"
+sku = 738594937
+
+[[products]]
+
+[[products]]
+
+name = "Nail"
+sku = 284758393
+color = "gray"
+
+
+# You can create nested arrays of tables as well.
+
+[[fruit]]
+  name = "apple"
+
+  [fruit.physical]
+    color = "red"
+    shape = "round"
+
+  [[fruit.variety]]
+    name = "red delicious"
+
+  [[fruit.variety]]
+    name = "granny smith"
+
+[[fruit]]
+  name = "banana"
+
+  [[fruit.variety]]
+    name = "plantain"
diff --git a/vendor/basic-toml/tests/valid/example.json b/vendor/basic-toml/tests/valid/example.json
new file mode 100644
index 000000000..48aa90784
--- /dev/null
+++ b/vendor/basic-toml/tests/valid/example.json
@@ -0,0 +1,14 @@
+{
+  "best-day-ever": {"type": "datetime", "value": "1987-07-05T17:45:00Z"},
+  "numtheory": {
+    "boring": {"type": "bool", "value": "false"},
+    "perfection": {
+      "type": "array",
+      "value": [
+        {"type": "integer", "value": "6"},
+        {"type": "integer", "value": "28"},
+        {"type": "integer", "value": "496"}
+      ]
+    }
+  }
+}
diff --git a/vendor/basic-toml/tests/valid/example.toml b/vendor/basic-toml/tests/valid/example.toml
new file mode 100644
index 000000000..8cb02e01b
--- /dev/null
+++ b/vendor/basic-toml/tests/valid/example.toml
@@ -0,0 +1,5 @@
+best-day-ever = 1987-07-05T17:45:00Z
+
+[numtheory]
+boring = false
+perfection = [6, 28, 496]
diff --git a/vendor/basic-toml/tests/valid/example2.json b/vendor/basic-toml/tests/valid/example2.json
new file mode 100644
index 000000000..3249a974f
--- /dev/null
+++ b/vendor/basic-toml/tests/valid/example2.json
@@ -0,0 +1 @@
+{"clients":{"data":{"type":"array","value":[{"type":"array","value":[{"type":"string","value":"gamma"},{"type":"string","value":"delta"}]},{"type":"array","value":[{"type":"integer","value":"1"},{"type":"integer","value":"2"}]}]},"hosts":{"type":"array","value":[{"type":"string","value":"alpha"},{"type":"string","value":"omega"}]}},"database":{"connection_max":{"type":"integer","value":"5000"},"enabled":{"type":"bool","value":"true"},"ports":{"type":"array","value":[{"type":"integer","value":"8001"},{"type":"integer","value":"8001"},{"type":"integer","value":"8002"}]},"server":{"type":"string","value":"192.168.1.1"}},"owner":{"bio":{"type":"string","value":"GitHub Cofounder \u0026 CEO\nLikes tater tots and beer."},"dob":{"type":"datetime","value":"1979-05-27T07:32:00Z"},"name":{"type":"string","value":"Tom Preston-Werner"},"organization":{"type":"string","value":"GitHub"}},"products":[{"name":{"type":"string","value":"Hammer"},"sku":{"type":"integer","value":"738594937"}},{"color":{"type":"string","value":"gray"},"name":{"type":"string","value":"Nail"},"sku":{"type":"integer","value":"284758393"}}],"servers":{"alpha":{"dc":{"type":"string","value":"eqdc10"},"ip":{"type":"string","value":"10.0.0.1"}},"beta":{"country":{"type":"string","value":"中国"},"dc":{"type":"string","value":"eqdc10"},"ip":{"type":"string","value":"10.0.0.2"}}},"title":{"type":"string","value":"TOML Example"}}
diff --git a/vendor/basic-toml/tests/valid/example2.toml b/vendor/basic-toml/tests/valid/example2.toml
new file mode 100644
index 000000000..bc12c9901
--- /dev/null
+++ b/vendor/basic-toml/tests/valid/example2.toml
@@ -0,0 +1,47 @@
+# This is a TOML document. Boom.
+
+title = "TOML Example"
+
+[owner]
+name = "Tom Preston-Werner"
+organization = "GitHub"
+bio = "GitHub Cofounder & CEO\nLikes tater tots and beer."
+dob = 1979-05-27T07:32:00Z # First class dates? Why not?
+
+[database]
+server = "192.168.1.1"
+ports = [ 8001, 8001, 8002 ]
+connection_max = 5000
+enabled = true
+
+[servers]
+
+  # You can indent as you please. Tabs or spaces. TOML don't care.
+  [servers.alpha]
+  ip = "10.0.0.1"
+  dc = "eqdc10"
+
+  [servers.beta]
+  ip = "10.0.0.2"
+  dc = "eqdc10"
+  country = "中国" # This should be parsed as UTF-8
+
+[clients]
+data = [ ["gamma", "delta"], [1, 2] ] # just an update to make sure parsers support it
+
+# Line breaks are OK when inside arrays
+hosts = [
+  "alpha",
+  "omega"
+]
+
+# Products
+
+  [[products]]
+  name = "Hammer"
+  sku = 738594937
+
+  [[products]]
+  name = "Nail"
+  sku = 284758393
+  color = "gray"
diff --git a/vendor/basic-toml/tests/valid/float-exponent.json b/vendor/basic-toml/tests/valid/float-exponent.json
new file mode 100644
index 000000000..97709b42a
--- /dev/null
+++ b/vendor/basic-toml/tests/valid/float-exponent.json
@@ -0,0 +1,11 @@
+{
+    "lower": {"type": "float", "value": "300.0"},
+    "upper": {"type": "float", "value": "300.0"},
+    "neg": {"type": "float", "value": "0.03"},
+    "pos": {"type": "float", "value": "300.0"},
+    "zero": {"type": "float", "value": "3.0"},
+    "pointlower": {"type": "float", "value": "310.0"},
+    "pointupper": {"type": "float", "value": "310.0"},
+    "prefix-zero-exp": {"type": "float", "value": "1000000.0"},
+    "prefix-zero-exp-plus": {"type": "float", "value": "1000000.0"}
+}
diff --git a/vendor/basic-toml/tests/valid/float-exponent.toml b/vendor/basic-toml/tests/valid/float-exponent.toml
new file mode 100644
index 000000000..5349db368
--- /dev/null
+++ b/vendor/basic-toml/tests/valid/float-exponent.toml
@@ -0,0 +1,9 @@
+lower = 3e2
+upper = 3E2
+neg = 3e-2
+pos = 3E+2
+zero = 3e0
+pointlower = 3.1e2
+pointupper = 3.1E2
+prefix-zero-exp = 1e06
+prefix-zero-exp-plus = 1e+06
diff --git a/vendor/basic-toml/tests/valid/float.json b/vendor/basic-toml/tests/valid/float.json
new file mode 100644
index 000000000..b8a2e9758
--- /dev/null
+++ b/vendor/basic-toml/tests/valid/float.json
@@ -0,0 +1,4 @@
+{
+    "pi": {"type": "float", "value": "3.14"},
+    "negpi": {"type": "float", "value": "-3.14"}
+}
diff --git a/vendor/basic-toml/tests/valid/float.toml b/vendor/basic-toml/tests/valid/float.toml
new file mode 100644
index 000000000..7c528d200
--- /dev/null
+++ b/vendor/basic-toml/tests/valid/float.toml
@@ -0,0 +1,2 @@
+pi = 3.14
+negpi = -3.14
diff --git a/vendor/basic-toml/tests/valid/hard_example.json b/vendor/basic-toml/tests/valid/hard_example.json
new file mode 100644
index 000000000..9762e58ef
--- /dev/null
+++ b/vendor/basic-toml/tests/valid/hard_example.json
@@ -0,0 +1 @@
+{"the":{"hard":{"another_test_string":{"type":"string","value":" Same thing, but with a string #"},"bit#":{"multi_line_array":{"type":"array","value":[{"type":"string","value":"]"}]},"what?":{"type":"string","value":"You don't think some user won't do that?"}},"harder_test_string":{"type":"string","value":" And when \"'s are in the string, along with # \""},"test_array":{"type":"array","value":[{"type":"string","value":"] "},{"type":"string","value":" # "}]},"test_array2":{"type":"array","value":[{"type":"string","value":"Test #11 ]proved that"},{"type":"string","value":"Experiment #9 was a success"}]}},"test_string":{"type":"string","value":"You'll hate me after this - #"}}}
diff --git a/vendor/basic-toml/tests/valid/hard_example.toml b/vendor/basic-toml/tests/valid/hard_example.toml
new file mode 100644
index 000000000..38856c873
--- /dev/null
+++ b/vendor/basic-toml/tests/valid/hard_example.toml
@@ -0,0 +1,33 @@
+# Test file for TOML
+# Only this one tries to emulate a TOML file written by a user of the kind of parser writers probably hate
+# This part you'll really hate
+
+[the]
+test_string = "You'll hate me after this - #"          # " Annoying, isn't it?
+
+    [the.hard]
+    test_array = [ "] ", " # "]      # ] There you go, parse this!
+    test_array2 = [ "Test #11 ]proved that", "Experiment #9 was a success" ]
+    # You didn't think it'd as easy as chucking out the last #, did you?
+    another_test_string = " Same thing, but with a string #"
+    harder_test_string = " And when \"'s are in the string, along with # \""   # "and comments are there too"
+    # Things will get harder
+
+        [the.hard."bit#"]
+        "what?" = "You don't think some user won't do that?"
+        multi_line_array = [
+            "]",
+            # ] Oh yes I did
+            ]
+
+# Each of the following keygroups/key value pairs should produce an error. Uncomment to them to test
+
+#[error]   if you didn't catch this, your parser is broken
+#string = "Anything other than tabs, spaces and newline after a keygroup or key value pair has ended should produce an error unless it is a comment"   like this
+#array = [
+#         "This might most likely happen in multiline arrays",
+#         Like here,
+#         "or here,
+#         and here"
+#         ]     End of array comment, forgot the #
+#number = 3.14  pi <--again forgot the #
diff --git a/vendor/basic-toml/tests/valid/implicit-and-explicit-after.json b/vendor/basic-toml/tests/valid/implicit-and-explicit-after.json
new file mode 100644
index 000000000..374bd0934
--- /dev/null
+++ b/vendor/basic-toml/tests/valid/implicit-and-explicit-after.json
@@ -0,0 +1,10 @@
+{
+    "a": {
+        "better": {"type": "integer", "value": "43"},
+        "b": {
+            "c": {
+                "answer": {"type": "integer", "value": "42"}
+            }
+        }
+    }
+}
diff --git a/vendor/basic-toml/tests/valid/implicit-and-explicit-after.toml b/vendor/basic-toml/tests/valid/implicit-and-explicit-after.toml
new file mode 100644
index 000000000..c0e8865b3
--- /dev/null
+++ b/vendor/basic-toml/tests/valid/implicit-and-explicit-after.toml
@@ -0,0 +1,5 @@
+[a.b.c]
+answer = 42
+
+[a]
+better = 43
diff --git a/vendor/basic-toml/tests/valid/implicit-and-explicit-before.json b/vendor/basic-toml/tests/valid/implicit-and-explicit-before.json
new file mode 100644
index 000000000..374bd0934
--- /dev/null
+++ b/vendor/basic-toml/tests/valid/implicit-and-explicit-before.json
@@ -0,0 +1,10 @@
+{
+    "a": {
+        "better": {"type": "integer", "value": "43"},
+        "b": {
+            "c": {
+                "answer": {"type": "integer", "value": "42"}
+            }
+        }
+    }
+}
diff --git a/vendor/basic-toml/tests/valid/implicit-and-explicit-before.toml b/vendor/basic-toml/tests/valid/implicit-and-explicit-before.toml
new file mode 100644
index 000000000..eee68ff51
--- /dev/null
+++ b/vendor/basic-toml/tests/valid/implicit-and-explicit-before.toml
@@ -0,0 +1,5 @@
+[a]
+better = 43
+
+[a.b.c]
+answer = 42
diff --git a/vendor/basic-toml/tests/valid/implicit-groups.json b/vendor/basic-toml/tests/valid/implicit-groups.json
new file mode 100644
index 000000000..fbae7fc71
--- /dev/null
+++ b/vendor/basic-toml/tests/valid/implicit-groups.json
@@ -0,0 +1,9 @@
+{
+    "a": {
+        "b": {
+            "c": {
+                "answer": {"type": "integer", "value": "42"}
+            }
+        }
+    }
+}
diff --git a/vendor/basic-toml/tests/valid/implicit-groups.toml b/vendor/basic-toml/tests/valid/implicit-groups.toml
new file mode 100644
index 000000000..b6333e49d
--- /dev/null
+++ b/vendor/basic-toml/tests/valid/implicit-groups.toml
@@ -0,0 +1,2 @@
+[a.b.c]
+answer = 42
diff --git a/vendor/basic-toml/tests/valid/integer.json b/vendor/basic-toml/tests/valid/integer.json
new file mode 100644
index 000000000..77ecb6ccf
--- /dev/null
+++ b/vendor/basic-toml/tests/valid/integer.json
@@ -0,0 +1,14 @@
+{
+    "answer": {"type": "integer", "value": "42"},
+    "neganswer": {"type": "integer", "value": "-42"},
+
+    "neg_zero": {"type": "integer", "value": "0"},
+    "pos_zero": {"type": "integer", "value": "0"},
+
+    "hex1": {"type": "integer", "value": "3735928559"},
+    "hex2": {"type": "integer", "value": "3735928559"},
+    "hex3": {"type": "integer", "value": "3735928559"},
+    "oct1": {"type": "integer", "value": "342391"},
+    "oct2": {"type": "integer", "value": "493"},
+    "bin1": {"type": "integer", "value": "214"}
+}
diff --git a/vendor/basic-toml/tests/valid/integer.toml b/vendor/basic-toml/tests/valid/integer.toml
new file mode 100644
index 000000000..8362459bc
--- /dev/null
+++ b/vendor/basic-toml/tests/valid/integer.toml
@@ -0,0 +1,18 @@
+answer = 42
+neganswer = -42
+
+neg_zero = -0
+pos_zero = +0
+
+# hexadecimal with prefix `0x`
+hex1 = 0xDEADBEEF
+hex2 = 0xdeadbeef
+hex3 = 0xdead_beef
+
+# octal with prefix `0o`
+oct1 = 0o01234567
+oct2 = 0o755 # useful for Unix file permissions
+
+# binary with prefix `0b`
+bin1 = 0b11010110
+
diff --git a/vendor/basic-toml/tests/valid/key-empty.json b/vendor/basic-toml/tests/valid/key-empty.json
new file mode 100644
index 000000000..99afee47f
--- /dev/null
+++ b/vendor/basic-toml/tests/valid/key-empty.json
@@ -0,0 +1,3 @@
+{
+  "": {"type": "integer", "value": "1"}
+}
diff --git a/vendor/basic-toml/tests/valid/key-empty.toml b/vendor/basic-toml/tests/valid/key-empty.toml
new file mode 100644
index 000000000..2f6a07c27
--- /dev/null
+++ b/vendor/basic-toml/tests/valid/key-empty.toml
@@ -0,0 +1 @@
+"" = 1
diff --git a/vendor/basic-toml/tests/valid/key-equals-nospace.json b/vendor/basic-toml/tests/valid/key-equals-nospace.json
new file mode 100644
index 000000000..1f8709ab9
--- /dev/null
+++ b/vendor/basic-toml/tests/valid/key-equals-nospace.json
@@ -0,0 +1,3 @@
+{
+    "answer": {"type": "integer", "value": "42"}
+}
diff --git a/vendor/basic-toml/tests/valid/key-equals-nospace.toml b/vendor/basic-toml/tests/valid/key-equals-nospace.toml
new file mode 100644
index 000000000..560901c5a
--- /dev/null
+++ b/vendor/basic-toml/tests/valid/key-equals-nospace.toml
@@ -0,0 +1 @@
+answer=42
diff --git a/vendor/basic-toml/tests/valid/key-quote-newline.json b/vendor/basic-toml/tests/valid/key-quote-newline.json
new file mode 100644
index 000000000..12473e420
--- /dev/null
+++ b/vendor/basic-toml/tests/valid/key-quote-newline.json
@@ -0,0 +1,3 @@
+{
+    "\n": {"type": "integer", "value": "1"}
+}
diff --git a/vendor/basic-toml/tests/valid/key-quote-newline.toml b/vendor/basic-toml/tests/valid/key-quote-newline.toml
new file mode 100644
index 000000000..a2639bfbb
--- /dev/null
+++ b/vendor/basic-toml/tests/valid/key-quote-newline.toml
@@ -0,0 +1 @@
+"\n" = 1
diff --git a/vendor/basic-toml/tests/valid/key-space.json b/vendor/basic-toml/tests/valid/key-space.json
new file mode 100644
index 000000000..9d1f76911
--- /dev/null
+++ b/vendor/basic-toml/tests/valid/key-space.json
@@ -0,0 +1,3 @@
+{
+    "a b": {"type": "integer", "value": "1"}
+}
diff --git a/vendor/basic-toml/tests/valid/key-space.toml b/vendor/basic-toml/tests/valid/key-space.toml
new file mode 100644
index 000000000..f4f36c4f6
--- /dev/null
+++ b/vendor/basic-toml/tests/valid/key-space.toml
@@ -0,0 +1 @@
+"a b" = 1
diff --git a/vendor/basic-toml/tests/valid/key-special-chars.json b/vendor/basic-toml/tests/valid/key-special-chars.json
new file mode 100644
index 000000000..6550ebda2
--- /dev/null
+++ b/vendor/basic-toml/tests/valid/key-special-chars.json
@@ -0,0 +1,5 @@
+{
+    "~!@#$^&*()_+-`1234567890[]\\|/?><.,;:'": {
+        "type": "integer", "value": "1"
+    }
+}
diff --git a/vendor/basic-toml/tests/valid/key-special-chars.toml b/vendor/basic-toml/tests/valid/key-special-chars.toml
new file mode 100644
index 000000000..dc43625d2
--- /dev/null
+++ b/vendor/basic-toml/tests/valid/key-special-chars.toml
@@ -0,0 +1 @@
+"~!@#$^&*()_+-`1234567890[]\\|/?><.,;:'" = 1
diff --git a/vendor/basic-toml/tests/valid/key-with-pound.json b/vendor/basic-toml/tests/valid/key-with-pound.json
new file mode 100644
index 000000000..ee39e1de4
--- /dev/null
+++ b/vendor/basic-toml/tests/valid/key-with-pound.json
@@ -0,0 +1,3 @@
+{
+    "key#name": {"type": "integer", "value": "5"}
+}
diff --git a/vendor/basic-toml/tests/valid/key-with-pound.toml b/vendor/basic-toml/tests/valid/key-with-pound.toml
new file mode 100644
index 000000000..65b766fd1
--- /dev/null
+++ b/vendor/basic-toml/tests/valid/key-with-pound.toml
@@ -0,0 +1 @@
+"key#name" = 5
diff --git a/vendor/basic-toml/tests/valid/long-float.json b/vendor/basic-toml/tests/valid/long-float.json
new file mode 100644
index 000000000..8ceed4797
--- /dev/null
+++ b/vendor/basic-toml/tests/valid/long-float.json
@@ -0,0 +1,4 @@
+{
+    "longpi": {"type": "float", "value": "3.141592653589793"},
+    "neglongpi": {"type": "float", "value": "-3.141592653589793"}
+}
diff --git a/vendor/basic-toml/tests/valid/long-float.toml b/vendor/basic-toml/tests/valid/long-float.toml
new file mode 100644
index 000000000..9558ae47c
--- /dev/null
+++ b/vendor/basic-toml/tests/valid/long-float.toml
@@ -0,0 +1,2 @@
+longpi = 3.141592653589793
+neglongpi = -3.141592653589793
diff --git a/vendor/basic-toml/tests/valid/long-integer.json b/vendor/basic-toml/tests/valid/long-integer.json
new file mode 100644
index 000000000..16c331ed3
--- /dev/null
+++ b/vendor/basic-toml/tests/valid/long-integer.json
@@ -0,0 +1,4 @@
+{
+    "answer": {"type": "integer", "value": "9223372036854775807"},
+    "neganswer": {"type": "integer", "value": "-9223372036854775808"}
+}
diff --git a/vendor/basic-toml/tests/valid/long-integer.toml b/vendor/basic-toml/tests/valid/long-integer.toml
new file mode 100644
index 000000000..424a13ac2
--- /dev/null
+++ b/vendor/basic-toml/tests/valid/long-integer.toml
@@ -0,0 +1,2 @@
+answer = 9223372036854775807
+neganswer = -9223372036854775808
diff --git a/vendor/basic-toml/tests/valid/multiline-string.json b/vendor/basic-toml/tests/valid/multiline-string.json
new file mode 100644
index 000000000..3223bae31
--- /dev/null
+++ b/vendor/basic-toml/tests/valid/multiline-string.json
@@ -0,0 +1,38 @@
+{
+    "multiline_empty_one": {
+        "type": "string",
+        "value": ""
+    },
+    "multiline_empty_two": {
+        "type": "string",
+        "value": ""
+    },
+    "multiline_empty_three": {
+        "type": "string",
+        "value": ""
+    },
+    "multiline_empty_four": {
+        "type": "string",
+        "value": ""
+    },
+    "multiline_empty_five": {
+        "type": "string",
+        "value": ""
+    },
+    "equivalent_one": {
+        "type": "string",
+        "value": "The quick brown fox jumps over the lazy dog."
+    },
+    "equivalent_two": {
+        "type": "string",
+        "value": "The quick brown fox jumps over the lazy dog."
+    },
+    "equivalent_three": {
+        "type": "string",
+        "value": "The quick brown fox jumps over the lazy dog."
+    },
+    "equivalent_four": {
+        "type": "string",
+        "value": "The quick brown fox jumps over the lazy dog."
+    }
+}
diff --git a/vendor/basic-toml/tests/valid/multiline-string.toml b/vendor/basic-toml/tests/valid/multiline-string.toml
new file mode 100644
index 000000000..2c4237fd8
--- /dev/null
+++ b/vendor/basic-toml/tests/valid/multiline-string.toml
@@ -0,0 +1,34 @@
+multiline_empty_one = """"""
+multiline_empty_two = """
+"""
+multiline_empty_three = """\
+    """
+multiline_empty_four = """\
+   \
+   \
+   """
+multiline_empty_five = """\
+   \ 
+   \	
+   \ 	
+   """
+
+equivalent_one = "The quick brown fox jumps over the lazy dog."
+equivalent_two = """
+The quick brown \
+
+
+  fox jumps over \
+    the lazy dog."""
+
+equivalent_three = """\
+       The quick brown \
+       fox jumps over \
+       the lazy dog.\
+       """
+
+equivalent_four = """\
+       The quick brown \ 
+       fox jumps over \				
+       the lazy dog.\	
+       """
diff --git a/vendor/basic-toml/tests/valid/quote-surrounded-value.json b/vendor/basic-toml/tests/valid/quote-surrounded-value.json
new file mode 100644
index 000000000..84495cf21
--- /dev/null
+++ b/vendor/basic-toml/tests/valid/quote-surrounded-value.json
@@ -0,0 +1,10 @@
+{
+  "double": {
+    "type": "string",
+    "value": "\"double quotes here\""
+  },
+  "single": {
+    "type": "string",
+    "value": "'single quotes here'"
+  }
+}
diff --git a/vendor/basic-toml/tests/valid/quote-surrounded-value.toml b/vendor/basic-toml/tests/valid/quote-surrounded-value.toml
new file mode 100644
index 000000000..dc8697e25
--- /dev/null
+++ b/vendor/basic-toml/tests/valid/quote-surrounded-value.toml
@@ -0,0 +1,2 @@
+double = '"double quotes here"'
+single = "'single quotes here'"
diff --git a/vendor/basic-toml/tests/valid/raw-multiline-string.json b/vendor/basic-toml/tests/valid/raw-multiline-string.json
new file mode 100644
index 000000000..b43cce5a2
--- /dev/null
+++ b/vendor/basic-toml/tests/valid/raw-multiline-string.json
@@ -0,0 +1,14 @@
+{
+    "oneline": {
+        "type": "string",
+        "value": "This string has a ' quote character."
+    },
+    "firstnl": {
+        "type": "string",
+        "value": "This string has a ' quote character."
+    },
+    "multiline": {
+        "type": "string",
+        "value": "This string\nhas ' a quote character\nand more than\none newline\nin it."
+    }
+}
diff --git a/vendor/basic-toml/tests/valid/raw-multiline-string.toml b/vendor/basic-toml/tests/valid/raw-multiline-string.toml
new file mode 100644
index 000000000..8094c03e3
--- /dev/null
+++ b/vendor/basic-toml/tests/valid/raw-multiline-string.toml
@@ -0,0 +1,9 @@
+oneline = '''This string has a ' quote character.'''
+firstnl = '''
+This string has a ' quote character.'''
+multiline = '''
+This string
+has ' a quote character
+and more than
+one newline
+in it.'''
diff --git a/vendor/basic-toml/tests/valid/raw-string.json b/vendor/basic-toml/tests/valid/raw-string.json
new file mode 100644
index 000000000..693ab9b54
--- /dev/null
+++ b/vendor/basic-toml/tests/valid/raw-string.json
@@ -0,0 +1,30 @@
+{
+    "backspace": {
+        "type": "string",
+        "value": "This string has a \\b backspace character."
+    },
+    "tab": {
+        "type": "string",
+        "value": "This string has a \\t tab character."
+    },
+    "newline": {
+        "type": "string",
+        "value": "This string has a \\n new line character."
+    },
+    "formfeed": {
+        "type": "string",
+        "value": "This string has a \\f form feed character."
+    },
+    "carriage": {
+        "type": "string",
+        "value": "This string has a \\r carriage return character."
+    },
+    "slash": {
+        "type": "string",
+        "value": "This string has a \\/ slash character."
+    },
+    "backslash": {
+        "type": "string",
+        "value": "This string has a \\\\ backslash character."
+    }
+}
diff --git a/vendor/basic-toml/tests/valid/raw-string.toml b/vendor/basic-toml/tests/valid/raw-string.toml
new file mode 100644
index 000000000..92acd2557
--- /dev/null
+++ b/vendor/basic-toml/tests/valid/raw-string.toml
@@ -0,0 +1,7 @@
+backspace = 'This string has a \b backspace character.'
+tab = 'This string has a \t tab character.'
+newline = 'This string has a \n new line character.'
+formfeed = 'This string has a \f form feed character.'
+carriage = 'This string has a \r carriage return character.'
+slash = 'This string has a \/ slash character.'
+backslash = 'This string has a \\ backslash character.'
diff --git a/vendor/basic-toml/tests/valid/string-delim-end.json b/vendor/basic-toml/tests/valid/string-delim-end.json
new file mode 100644
index 000000000..69b5a0a8a
--- /dev/null
+++ b/vendor/basic-toml/tests/valid/string-delim-end.json
@@ -0,0 +1,14 @@
+{
+  "str1": {
+    "type": "string",
+    "value": "\"This,\" she said, \"is just a pointless statement.\""
+  },
+  "str2": {
+    "type": "string",
+    "value": "foo''bar''"
+  },
+  "str3": {
+    "type": "string",
+    "value": "\"\""
+  }
+}
\ No newline at end of file
diff --git a/vendor/basic-toml/tests/valid/string-delim-end.toml b/vendor/basic-toml/tests/valid/string-delim-end.toml
new file mode 100644
index 000000000..9a4121969
--- /dev/null
+++ b/vendor/basic-toml/tests/valid/string-delim-end.toml
@@ -0,0 +1,3 @@
+str1 = """"This," she said, "is just a pointless statement.""""
+str2 = '''foo''bar'''''
+str3 = """"""""
diff --git a/vendor/basic-toml/tests/valid/string-empty.json b/vendor/basic-toml/tests/valid/string-empty.json
new file mode 100644
index 000000000..6c26d695b
--- /dev/null
+++ b/vendor/basic-toml/tests/valid/string-empty.json
@@ -0,0 +1,6 @@
+{
+    "answer": {
+        "type": "string",
+        "value": ""
+    }
+}
diff --git a/vendor/basic-toml/tests/valid/string-empty.toml b/vendor/basic-toml/tests/valid/string-empty.toml
new file mode 100644
index 000000000..e37e6815b
--- /dev/null
+++ b/vendor/basic-toml/tests/valid/string-empty.toml
@@ -0,0 +1 @@
+answer = ""
diff --git a/vendor/basic-toml/tests/valid/string-escapes.json b/vendor/basic-toml/tests/valid/string-escapes.json
new file mode 100644
index 000000000..e3b2d94ab
--- /dev/null
+++ b/vendor/basic-toml/tests/valid/string-escapes.json
@@ -0,0 +1,58 @@
+{
+    "backspace": {
+        "type": "string",
+        "value": "This string has a \u0008 backspace character."
+    },
+    "tab": {
+        "type": "string",
+        "value": "This string has a \u0009 tab character."
+    },
+    "newline": {
+        "type": "string",
+        "value": "This string has a \u000A new line character."
+    },
+    "formfeed": {
+        "type": "string",
+        "value": "This string has a \u000C form feed character."
+    },
+    "carriage": {
+        "type": "string",
+        "value": "This string has a \u000D carriage return character."
+    },
+    "quote": {
+        "type": "string",
+        "value": "This string has a \u0022 quote character."
+    },
+    "slash": {
+        "type": "string",
+        "value": "This string has a \u002F slash character."
+    },
+    "backslash": {
+        "type": "string",
+        "value": "This string has a \u005C backslash character."
+    },
+    "notunicode1": {
+        "type": "string",
+        "value": "This string does not have a unicode \\u escape."
+    },
+    "notunicode2": {
+        "type": "string",
+        "value": "This string does not have a unicode \u005Cu escape."
+    },
+    "notunicode3": {
+        "type": "string",
+        "value": "This string does not have a unicode \\u0075 escape."
+    },
+    "notunicode4": {
+        "type": "string",
+        "value": "This string does not have a unicode \\\u0075 escape."
+    },
+    "delete": {
+        "type": "string",
+        "value": "This string has a \u007f delete control code."
+    },
+    "unitseparator": {
+        "type": "string",
+        "value": "This string has a \u001f unit separator control code."
+    }
+}
diff --git a/vendor/basic-toml/tests/valid/string-escapes.toml b/vendor/basic-toml/tests/valid/string-escapes.toml
new file mode 100644
index 000000000..152c6ad96
--- /dev/null
+++ b/vendor/basic-toml/tests/valid/string-escapes.toml
@@ -0,0 +1,14 @@
+backspace = "This string has a \b backspace character."
+tab = "This string has a \t tab character."
+newline = "This string has a \n new line character."
+formfeed = "This string has a \f form feed character."
+carriage = "This string has a \r carriage return character."
+quote = "This string has a \" quote character."
+slash = "This string has a / slash character."
+backslash = "This string has a \\ backslash character."
+notunicode1 = "This string does not have a unicode \\u escape."
+notunicode2 = "This string does not have a unicode \u005Cu escape."
+notunicode3 = "This string does not have a unicode \\u0075 escape."
+notunicode4 = "This string does not have a unicode \\\u0075 escape."
+delete = "This string has a \u007F delete control code."
+unitseparator = "This string has a \u001F unit separator control code."
diff --git a/vendor/basic-toml/tests/valid/string-simple.json b/vendor/basic-toml/tests/valid/string-simple.json
new file mode 100644
index 000000000..2e05f99b4
--- /dev/null
+++ b/vendor/basic-toml/tests/valid/string-simple.json
@@ -0,0 +1,6 @@
+{
+    "answer": {
+        "type": "string",
+        "value": "You are not drinking enough whisky."
+    }
+}
diff --git a/vendor/basic-toml/tests/valid/string-simple.toml b/vendor/basic-toml/tests/valid/string-simple.toml
new file mode 100644
index 000000000..e17ade623
--- /dev/null
+++ b/vendor/basic-toml/tests/valid/string-simple.toml
@@ -0,0 +1 @@
+answer = "You are not drinking enough whisky."
diff --git a/vendor/basic-toml/tests/valid/string-with-pound.json b/vendor/basic-toml/tests/valid/string-with-pound.json
new file mode 100644
index 000000000..33cdc9c4b
--- /dev/null
+++ b/vendor/basic-toml/tests/valid/string-with-pound.json
@@ -0,0 +1,7 @@
+{
+    "pound": {"type": "string", "value": "We see no # comments here."},
+    "poundcomment": {
+        "type": "string",
+        "value": "But there are # some comments here."
+    }
+}
diff --git a/vendor/basic-toml/tests/valid/string-with-pound.toml b/vendor/basic-toml/tests/valid/string-with-pound.toml
new file mode 100644
index 000000000..5fd87466d
--- /dev/null
+++ b/vendor/basic-toml/tests/valid/string-with-pound.toml
@@ -0,0 +1,2 @@
+pound = "We see no # comments here."
+poundcomment = "But there are # some comments here." # Did I # mess you up?
diff --git a/vendor/basic-toml/tests/valid/table-array-implicit.json b/vendor/basic-toml/tests/valid/table-array-implicit.json
new file mode 100644
index 000000000..32e464012
--- /dev/null
+++ b/vendor/basic-toml/tests/valid/table-array-implicit.json
@@ -0,0 +1,7 @@
+{
+    "albums": {
+       "songs": [
+           {"name": {"type": "string", "value": "Glory Days"}}
+       ]
+    }
+}
diff --git a/vendor/basic-toml/tests/valid/table-array-implicit.toml b/vendor/basic-toml/tests/valid/table-array-implicit.toml
new file mode 100644
index 000000000..3157ac981
--- /dev/null
+++ b/vendor/basic-toml/tests/valid/table-array-implicit.toml
@@ -0,0 +1,2 @@
+[[albums.songs]]
+name = "Glory Days"
diff --git a/vendor/basic-toml/tests/valid/table-array-many.json b/vendor/basic-toml/tests/valid/table-array-many.json
new file mode 100644
index 000000000..84df2dabb
--- /dev/null
+++ b/vendor/basic-toml/tests/valid/table-array-many.json
@@ -0,0 +1,16 @@
+{
+    "people": [
+        {
+            "first_name": {"type": "string", "value": "Bruce"},
+            "last_name": {"type": "string", "value": "Springsteen"}
+        },
+        {
+            "first_name": {"type": "string", "value": "Eric"},
+            "last_name": {"type": "string", "value": "Clapton"}
+        },
+        {
+            "first_name": {"type": "string", "value": "Bob"},
+            "last_name": {"type": "string", "value": "Seger"}
+        }
+    ]
+}
diff --git a/vendor/basic-toml/tests/valid/table-array-many.toml b/vendor/basic-toml/tests/valid/table-array-many.toml
new file mode 100644
index 000000000..46062beb8
--- /dev/null
+++ b/vendor/basic-toml/tests/valid/table-array-many.toml
@@ -0,0 +1,11 @@
+[[people]]
+first_name = "Bruce"
+last_name = "Springsteen"
+
+[[people]]
+first_name = "Eric"
+last_name = "Clapton"
+
+[[people]]
+first_name = "Bob"
+last_name = "Seger"
diff --git a/vendor/basic-toml/tests/valid/table-array-nest-no-keys.json b/vendor/basic-toml/tests/valid/table-array-nest-no-keys.json
new file mode 100644
index 000000000..7537b1a19
--- /dev/null
+++ b/vendor/basic-toml/tests/valid/table-array-nest-no-keys.json
@@ -0,0 +1,14 @@
+{
+    "albums": [
+        {
+            "songs": [{}, {}]
+        }
+    ],
+    "artists": [
+        {
+            "home": {
+                "address": {}
+            }
+        }
+    ]
+}
diff --git a/vendor/basic-toml/tests/valid/table-array-nest-no-keys.toml b/vendor/basic-toml/tests/valid/table-array-nest-no-keys.toml
new file mode 100644
index 000000000..ad6eb1063
--- /dev/null
+++ b/vendor/basic-toml/tests/valid/table-array-nest-no-keys.toml
@@ -0,0 +1,6 @@
+[[ albums ]]
+  [[ albums.songs ]]
+  [[ albums.songs ]]
+
+[[ artists ]]
+  [ artists.home.address ]
diff --git a/vendor/basic-toml/tests/valid/table-array-nest.json b/vendor/basic-toml/tests/valid/table-array-nest.json
new file mode 100644
index 000000000..c117afa40
--- /dev/null
+++ b/vendor/basic-toml/tests/valid/table-array-nest.json
@@ -0,0 +1,18 @@
+{
+    "albums": [
+        {
+            "name": {"type": "string", "value": "Born to Run"},
+            "songs": [
+                {"name": {"type": "string", "value": "Jungleland"}},
+                {"name": {"type": "string", "value": "Meeting Across the River"}}
+            ]
+        },
+        {
+            "name": {"type": "string", "value": "Born in the USA"},
+            "songs": [
+                {"name": {"type": "string", "value": "Glory Days"}},
+                {"name": {"type": "string", "value": "Dancing in the Dark"}}
+            ]
+        }
+    ]
+}
diff --git a/vendor/basic-toml/tests/valid/table-array-nest.toml b/vendor/basic-toml/tests/valid/table-array-nest.toml
new file mode 100644
index 000000000..d659a3d94
--- /dev/null
+++ b/vendor/basic-toml/tests/valid/table-array-nest.toml
@@ -0,0 +1,17 @@
+[[albums]]
+name = "Born to Run"
+
+  [[albums.songs]]
+  name = "Jungleland"
+
+  [[albums.songs]]
+  name = "Meeting Across the River"
+
+[[albums]]
+name = "Born in the USA"
+  
+  [[albums.songs]]
+  name = "Glory Days"
+
+  [[albums.songs]]
+  name = "Dancing in the Dark"
diff --git a/vendor/basic-toml/tests/valid/table-array-one.json b/vendor/basic-toml/tests/valid/table-array-one.json
new file mode 100644
index 000000000..d75faaeb2
--- /dev/null
+++ b/vendor/basic-toml/tests/valid/table-array-one.json
@@ -0,0 +1,8 @@
+{
+    "people": [
+        {
+            "first_name": {"type": "string", "value": "Bruce"},
+            "last_name": {"type": "string", "value": "Springsteen"}
+        }
+    ]
+}
diff --git a/vendor/basic-toml/tests/valid/table-array-one.toml b/vendor/basic-toml/tests/valid/table-array-one.toml
new file mode 100644
index 000000000..cd7e1b690
--- /dev/null
+++ b/vendor/basic-toml/tests/valid/table-array-one.toml
@@ -0,0 +1,3 @@
+[[people]]
+first_name = "Bruce"
+last_name = "Springsteen"
diff --git a/vendor/basic-toml/tests/valid/table-empty.json b/vendor/basic-toml/tests/valid/table-empty.json
new file mode 100644
index 000000000..6f3873af6
--- /dev/null
+++ b/vendor/basic-toml/tests/valid/table-empty.json
@@ -0,0 +1,3 @@
+{
+    "a": {}
+}
diff --git a/vendor/basic-toml/tests/valid/table-empty.toml b/vendor/basic-toml/tests/valid/table-empty.toml
new file mode 100644
index 000000000..8bb6a0aa0
--- /dev/null
+++ b/vendor/basic-toml/tests/valid/table-empty.toml
@@ -0,0 +1 @@
+[a]
diff --git a/vendor/basic-toml/tests/valid/table-multi-empty.json b/vendor/basic-toml/tests/valid/table-multi-empty.json
new file mode 100644
index 000000000..a6e17c926
--- /dev/null
+++ b/vendor/basic-toml/tests/valid/table-multi-empty.json
@@ -0,0 +1,5 @@
+{
+    "a": { "b": {} },
+    "b": {},
+    "c": { "a": {} }
+}
diff --git a/vendor/basic-toml/tests/valid/table-multi-empty.toml b/vendor/basic-toml/tests/valid/table-multi-empty.toml
new file mode 100644
index 000000000..2266ed2d4
--- /dev/null
+++ b/vendor/basic-toml/tests/valid/table-multi-empty.toml
@@ -0,0 +1,5 @@
+[a]
+[a.b]
+[b]
+[c]
+[c.a]
diff --git a/vendor/basic-toml/tests/valid/table-sub-empty.json b/vendor/basic-toml/tests/valid/table-sub-empty.json
new file mode 100644
index 000000000..97877708e
--- /dev/null
+++ b/vendor/basic-toml/tests/valid/table-sub-empty.json
@@ -0,0 +1,3 @@
+{
+    "a": { "b": {} }
+}
diff --git a/vendor/basic-toml/tests/valid/table-sub-empty.toml b/vendor/basic-toml/tests/valid/table-sub-empty.toml
new file mode 100644
index 000000000..70b7fe11c
--- /dev/null
+++ b/vendor/basic-toml/tests/valid/table-sub-empty.toml
@@ -0,0 +1,2 @@
+[a]
+[a.b]
diff --git a/vendor/basic-toml/tests/valid/table-whitespace.json b/vendor/basic-toml/tests/valid/table-whitespace.json
new file mode 100644
index 000000000..3a73ec864
--- /dev/null
+++ b/vendor/basic-toml/tests/valid/table-whitespace.json
@@ -0,0 +1,3 @@
+{
+    "valid key": {}
+}
diff --git a/vendor/basic-toml/tests/valid/table-whitespace.toml b/vendor/basic-toml/tests/valid/table-whitespace.toml
new file mode 100644
index 000000000..daf881d13
--- /dev/null
+++ b/vendor/basic-toml/tests/valid/table-whitespace.toml
@@ -0,0 +1 @@
+["valid key"]
diff --git a/vendor/basic-toml/tests/valid/table-with-pound.json b/vendor/basic-toml/tests/valid/table-with-pound.json
new file mode 100644
index 000000000..5e594e419
--- /dev/null
+++ b/vendor/basic-toml/tests/valid/table-with-pound.json
@@ -0,0 +1,5 @@
+{
+    "key#group": {
+        "answer": {"type": "integer", "value": "42"}
+    }
+}
diff --git a/vendor/basic-toml/tests/valid/table-with-pound.toml b/vendor/basic-toml/tests/valid/table-with-pound.toml
new file mode 100644
index 000000000..33f2c4fd6
--- /dev/null
+++ b/vendor/basic-toml/tests/valid/table-with-pound.toml
@@ -0,0 +1,2 @@
+["key#group"]
+answer = 42
diff --git a/vendor/basic-toml/tests/valid/unicode-escape.json b/vendor/basic-toml/tests/valid/unicode-escape.json
new file mode 100644
index 000000000..06fae7057
--- /dev/null
+++ b/vendor/basic-toml/tests/valid/unicode-escape.json
@@ -0,0 +1,8 @@
+{
+    "answer1": {"type": "string", "value": "\u000B"},
+    "answer4": {"type": "string", "value": "\u03B4α"},
+    "answer8": {"type": "string", "value": "\u03B4β"},
+    "answer9": {"type": "string", "value": "\uc0de"},
+    "answer10": {"type": "string", "value": "\u03B4α"},
+    "answer11": {"type": "string", "value": "\uABC1"}
+}
diff --git a/vendor/basic-toml/tests/valid/unicode-escape.toml b/vendor/basic-toml/tests/valid/unicode-escape.toml
new file mode 100644
index 000000000..6654252a7
--- /dev/null
+++ b/vendor/basic-toml/tests/valid/unicode-escape.toml
@@ -0,0 +1,6 @@
+answer1 = "\u000B"
+answer4 = "\u03B4α"
+answer8 = "\U000003B4β"
+answer9 = "\uc0de"
+answer10 = "\u03b4α"
+answer11 = "\U0000abc1"
diff --git a/vendor/basic-toml/tests/valid/unicode-literal.json b/vendor/basic-toml/tests/valid/unicode-literal.json
new file mode 100644
index 000000000..00aa2f832
--- /dev/null
+++ b/vendor/basic-toml/tests/valid/unicode-literal.json
@@ -0,0 +1,3 @@
+{
+    "answer": {"type": "string", "value": "δ"}
+}
diff --git a/vendor/basic-toml/tests/valid/unicode-literal.toml b/vendor/basic-toml/tests/valid/unicode-literal.toml
new file mode 100644
index 000000000..c65723ca1
--- /dev/null
+++ b/vendor/basic-toml/tests/valid/unicode-literal.toml
@@ -0,0 +1 @@
+answer = "δ"