1 files changed, 333 insertions, 0 deletions
diff --git a/vendor/toml_edit-0.19.11/src/key.rs b/vendor/toml_edit-0.19.11/src/key.rs
new file mode 100644
index 000000000..b7038c36d
--- /dev/null
+++ b/vendor/toml_edit-0.19.11/src/key.rs
@@ -0,0 +1,333 @@
+use std::borrow::Cow;
+use std::str::FromStr;
+
+use crate::encode::{to_string_repr, StringStyle};
+use crate::parser;
+use crate::parser::key::is_unquoted_char;
+use crate::repr::{Decor, Repr};
+use crate::InternalString;
+
+/// Key as part of a Key/Value Pair or a table header.
+///
+/// # Examples
+///
+/// ```notrust
+/// [dependencies."nom"]
+/// version = "5.0"
+/// 'literal key' = "nonsense"
+/// "basic string key" = 42
+/// ```
+///
+/// There are 3 types of keys:
+///
+/// 1. Bare keys (`version` and `dependencies`)
+///
+/// 2. Basic quoted keys (`"basic string key"` and `"nom"`)
+///
+/// 3. Literal quoted keys (`'literal key'`)
+///
+/// For details see [toml spec](https://github.com/toml-lang/toml/#keyvalue-pair).
+///
+/// To parse a key use `FromStr` trait implementation: `"string".parse::<Key>()`.
+#[derive(Debug, Clone)]
+pub struct Key {
+    key: InternalString,
+    pub(crate) repr: Option<Repr>,
+    pub(crate) decor: Decor,
+}
+
+impl Key {
+    /// Create a new table key
+    pub fn new(key: impl Into<InternalString>) -> Self {
+        Self {
+            key: key.into(),
+            repr: None,
+            decor: Default::default(),
+        }
+    }
+
+    /// Parse a TOML key expression
+    ///
+    /// Unlike `"".parse<Key>()`, this supports dotted keys.
+    pub fn parse(repr: &str) -> Result<Vec<Self>, crate::TomlError> {
+        Self::try_parse_path(repr)
+    }
+
+    pub(crate) fn with_repr_unchecked(mut self, repr: Repr) -> Self {
+        self.repr = Some(repr);
+        self
+    }
+
+    /// While creating the `Key`, add `Decor` to it
+    pub fn with_decor(mut self, decor: Decor) -> Self {
+        self.decor = decor;
+        self
+    }
+
+    /// Access a mutable proxy for the `Key`.
+    pub fn as_mut(&mut self) -> KeyMut<'_> {
+        KeyMut { key: self }
+    }
+
+    /// Returns the parsed key value.
+    pub fn get(&self) -> &str {
+        &self.key
+    }
+
+    pub(crate) fn get_internal(&self) -> &InternalString {
+        &self.key
+    }
+
+    /// Returns key raw representation, if available.
+    pub fn as_repr(&self) -> Option<&Repr> {
+        self.repr.as_ref()
+    }
+
+    /// Returns the default raw representation.
+    pub fn default_repr(&self) -> Repr {
+        to_key_repr(&self.key)
+    }
+
+    /// Returns a raw representation.
+    pub fn display_repr(&self) -> Cow<'_, str> {
+        self.as_repr()
+            .and_then(|r| r.as_raw().as_str())
+            .map(Cow::Borrowed)
+            .unwrap_or_else(|| {
+                Cow::Owned(self.default_repr().as_raw().as_str().unwrap().to_owned())
+            })
+    }
+
+    /// Returns the surrounding whitespace
+    pub fn decor_mut(&mut self) -> &mut Decor {
+        &mut self.decor
+    }
+
+    /// Returns the surrounding whitespace
+    pub fn decor(&self) -> &Decor {
+        &self.decor
+    }
+
+    /// Returns the location within the original document
+    #[cfg(feature = "serde")]
+    pub(crate) fn span(&self) -> Option<std::ops::Range<usize>> {
+        self.repr.as_ref().and_then(|r| r.span())
+    }
+
+    pub(crate) fn despan(&mut self, input: &str) {
+        self.decor.despan(input);
+        if let Some(repr) = &mut self.repr {
+            repr.despan(input)
+        }
+    }
+
+    /// Auto formats the key.
+    pub fn fmt(&mut self) {
+        self.repr = Some(to_key_repr(&self.key));
+        self.decor.clear();
+    }
+
+    fn try_parse_simple(s: &str) -> Result<Key, crate::TomlError> {
+        let mut key = parser::parse_key(s)?;
+        key.despan(s);
+        Ok(key)
+    }
+
+    fn try_parse_path(s: &str) -> Result<Vec<Key>, crate::TomlError> {
+        let mut keys = parser::parse_key_path(s)?;
+        for key in &mut keys {
+            key.despan(s);
+        }
+        Ok(keys)
+    }
+}
+
+impl std::ops::Deref for Key {
+    type Target = str;
+
+    fn deref(&self) -> &Self::Target {
+        self.get()
+    }
+}
+
+impl std::hash::Hash for Key {
+    fn hash<H: std::hash::Hasher>(&self, state: &mut H) {
+        self.get().hash(state);
+    }
+}
+
+impl Ord for Key {
+    fn cmp(&self, other: &Self) -> std::cmp::Ordering {
+        self.get().cmp(other.get())
+    }
+}
+
+impl PartialOrd for Key {
+    fn partial_cmp(&self, other: &Self) -> Option<std::cmp::Ordering> {
+        Some(self.cmp(other))
+    }
+}
+
+impl Eq for Key {}
+
+impl PartialEq for Key {
+    #[inline]
+    fn eq(&self, other: &Key) -> bool {
+        PartialEq::eq(self.get(), other.get())
+    }
+}
+
+impl PartialEq<str> for Key {
+    #[inline]
+    fn eq(&self, other: &str) -> bool {
+        PartialEq::eq(self.get(), other)
+    }
+}
+
+impl<'s> PartialEq<&'s str> for Key {
+    #[inline]
+    fn eq(&self, other: &&str) -> bool {
+        PartialEq::eq(self.get(), *other)
+    }
+}
+
+impl PartialEq<String> for Key {
+    #[inline]
+    fn eq(&self, other: &String) -> bool {
+        PartialEq::eq(self.get(), other.as_str())
+    }
+}
+
+impl std::fmt::Display for Key {
+    fn fmt(&self, f: &mut std::fmt::Formatter<'_>) -> std::fmt::Result {
+        crate::encode::Encode::encode(self, f, None, ("", ""))
+    }
+}
+
+impl FromStr for Key {
+    type Err = crate::TomlError;
+
+    /// Tries to parse a key from a &str,
+    /// if fails, tries as basic quoted key (surrounds with "")
+    /// and then literal quoted key (surrounds with '')
+    fn from_str(s: &str) -> Result<Self, Self::Err> {
+        Key::try_parse_simple(s)
+    }
+}
+
+fn to_key_repr(key: &str) -> Repr {
+    if key.as_bytes().iter().copied().all(is_unquoted_char) && !key.is_empty() {
+        Repr::new_unchecked(key)
+    } else {
+        to_string_repr(key, Some(StringStyle::OnelineSingle), Some(false))
+    }
+}
+
+impl<'b> From<&'b str> for Key {
+    fn from(s: &'b str) -> Self {
+        Key::new(s)
+    }
+}
+
+impl<'b> From<&'b String> for Key {
+    fn from(s: &'b String) -> Self {
+        Key::new(s)
+    }
+}
+
+impl From<String> for Key {
+    fn from(s: String) -> Self {
+        Key::new(s)
+    }
+}
+
+impl From<InternalString> for Key {
+    fn from(s: InternalString) -> Self {
+        Key::new(s)
+    }
+}
+
+#[doc(hidden)]
+impl From<Key> for InternalString {
+    fn from(key: Key) -> InternalString {
+        key.key
+    }
+}
+
+/// A mutable reference to a `Key`
+#[derive(Debug, Eq, PartialEq, PartialOrd, Ord, Hash)]
+pub struct KeyMut<'k> {
+    key: &'k mut Key,
+}
+
+impl<'k> KeyMut<'k> {
+    /// Returns the parsed key value.
+    pub fn get(&self) -> &str {
+        self.key.get()
+    }
+
+    /// Returns the raw representation, if available.
+    pub fn as_repr(&self) -> Option<&Repr> {
+        self.key.as_repr()
+    }
+
+    /// Returns the default raw representation.
+    pub fn default_repr(&self) -> Repr {
+        self.key.default_repr()
+    }
+
+    /// Returns a raw representation.
+    pub fn display_repr(&self) -> Cow<str> {
+        self.key.display_repr()
+    }
+
+    /// Returns the surrounding whitespace
+    pub fn decor_mut(&mut self) -> &mut Decor {
+        self.key.decor_mut()
+    }
+
+    /// Returns the surrounding whitespace
+    pub fn decor(&self) -> &Decor {
+        self.key.decor()
+    }
+
+    /// Auto formats the key.
+    pub fn fmt(&mut self) {
+        self.key.fmt()
+    }
+}
+
+impl<'k> std::ops::Deref for KeyMut<'k> {
+    type Target = str;
+
+    fn deref(&self) -> &Self::Target {
+        self.get()
+    }
+}
+
+impl<'s> PartialEq<str> for KeyMut<'s> {
+    #[inline]
+    fn eq(&self, other: &str) -> bool {
+        PartialEq::eq(self.get(), other)
+    }
+}
+
+impl<'s> PartialEq<&'s str> for KeyMut<'s> {
+    #[inline]
+    fn eq(&self, other: &&str) -> bool {
+        PartialEq::eq(self.get(), *other)
+    }
+}
+
+impl<'s> PartialEq<String> for KeyMut<'s> {
+    #[inline]
+    fn eq(&self, other: &String) -> bool {
+        PartialEq::eq(self.get(), other.as_str())
+    }
+}
+
+impl<'k> std::fmt::Display for KeyMut<'k> {
+    fn fmt(&self, f: &mut std::fmt::Formatter<'_>) -> std::fmt::Result {
+        std::fmt::Display::fmt(&self.key, f)
+    }
+}