diff options
Diffstat (limited to 'vendor/toml-0.5.9/src/macros.rs')
| -rw-r--r-- | vendor/toml-0.5.9/src/macros.rs | 462 |
1 files changed, 0 insertions, 462 deletions
diff --git a/vendor/toml-0.5.9/src/macros.rs b/vendor/toml-0.5.9/src/macros.rs deleted file mode 100644 index 0731afefd..000000000 --- a/vendor/toml-0.5.9/src/macros.rs +++ /dev/null @@ -1,462 +0,0 @@ -pub use serde::de::{Deserialize, IntoDeserializer}; - -use crate::value::{Array, Table, Value}; - -/// Construct a [`toml::Value`] from TOML syntax. -/// -/// [`toml::Value`]: value/enum.Value.html -/// -/// ```rust -/// fn main() { -/// let cargo_toml = toml::toml! { -/// [package] -/// name = "toml" -/// version = "0.4.5" -/// authors = ["Alex Crichton <alex@alexcrichton.com>"] -/// -/// [badges] -/// travis-ci = { repository = "alexcrichton/toml-rs" } -/// -/// [dependencies] -/// serde = "1.0" -/// -/// [dev-dependencies] -/// serde_derive = "1.0" -/// serde_json = "1.0" -/// }; -/// -/// println!("{:#?}", cargo_toml); -/// } -/// ``` -#[macro_export] -macro_rules! toml { - ($($toml:tt)+) => {{ - let table = $crate::value::Table::new(); - let mut root = $crate::Value::Table(table); - $crate::toml_internal!(@toplevel root [] $($toml)+); - root - }}; -} - -// TT-muncher to parse TOML syntax into a toml::Value. -// -// @toplevel -- Parse tokens outside of an inline table or inline array. In -// this state, `[table headers]` and `[[array headers]]` are -// allowed and `key = value` pairs are not separated by commas. -// -// @topleveldatetime -- Helper to parse a Datetime from string and insert it -// into a table, continuing in the @toplevel state. -// -// @path -- Turn a path segment into a string. Segments that look like idents -// are stringified, while quoted segments like `"cfg(windows)"` -// are not. -// -// @value -- Parse the value part of a `key = value` pair, which may be a -// primitive or inline table or inline array. -// -// @table -- Parse the contents of an inline table, returning them as a -// toml::Value::Table. -// -// @tabledatetime -- Helper to parse a Datetime from string and insert it -// into a table, continuing in the @table state. -// -// @array -- Parse the contents of an inline array, returning them as a -// toml::Value::Array. -// -// @arraydatetime -- Helper to parse a Datetime from string and push it into -// an array, continuing in the @array state. -// -// @trailingcomma -- Helper to append a comma to a sequence of tokens if the -// sequence is non-empty and does not already end in a trailing -// comma. -// -#[macro_export] -#[doc(hidden)] -macro_rules! toml_internal { - // Base case, no elements remaining. - (@toplevel $root:ident [$($path:tt)*]) => {}; - - // Parse negative number `key = -value`. - (@toplevel $root:ident [$($path:tt)*] $($($k:tt)-+).+ = - $v:tt $($rest:tt)*) => { - $crate::toml_internal!(@toplevel $root [$($path)*] $($($k)-+).+ = (-$v) $($rest)*); - }; - - // Parse positive number `key = +value`. - (@toplevel $root:ident [$($path:tt)*] $($($k:tt)-+).+ = + $v:tt $($rest:tt)*) => { - $crate::toml_internal!(@toplevel $root [$($path)*] $($($k)-+).+ = ($v) $($rest)*); - }; - - // Parse offset datetime `key = 1979-05-27T00:32:00.999999-07:00`. - (@toplevel $root:ident [$($path:tt)*] $($($k:tt)-+).+ = $yr:tt - $mo:tt - $dhr:tt : $min:tt : $sec:tt . $frac:tt - $tzh:tt : $tzm:tt $($rest:tt)*) => { - $crate::toml_internal!(@topleveldatetime $root [$($path)*] $($($k)-+).+ = ($yr - $mo - $dhr : $min : $sec . $frac - $tzh : $tzm) $($rest)*); - }; - // Space instead of T. - (@toplevel $root:ident [$($path:tt)*] $($($k:tt)-+).+ = $yr:tt - $mo:tt - $day:tt $hr:tt : $min:tt : $sec:tt . $frac:tt - $tzh:tt : $tzm:tt $($rest:tt)*) => { - $crate::toml_internal!(@topleveldatetime $root [$($path)*] $($($k)-+).+ = ($yr - $mo - $day T $hr : $min : $sec . $frac - $tzh : $tzm) $($rest)*); - }; - - // Parse offset datetime `key = 1979-05-27T00:32:00-07:00`. - (@toplevel $root:ident [$($path:tt)*] $($($k:tt)-+).+ = $yr:tt - $mo:tt - $dhr:tt : $min:tt : $sec:tt - $tzh:tt : $tzm:tt $($rest:tt)*) => { - $crate::toml_internal!(@topleveldatetime $root [$($path)*] $($($k)-+).+ = ($yr - $mo - $dhr : $min : $sec - $tzh : $tzm) $($rest)*); - }; - // Space instead of T. - (@toplevel $root:ident [$($path:tt)*] $($($k:tt)-+).+ = $yr:tt - $mo:tt - $day:tt $hr:tt : $min:tt : $sec:tt - $tzh:tt : $tzm:tt $($rest:tt)*) => { - $crate::toml_internal!(@topleveldatetime $root [$($path)*] $($($k)-+).+ = ($yr - $mo - $day T $hr : $min : $sec - $tzh : $tzm) $($rest)*); - }; - - // Parse local datetime `key = 1979-05-27T00:32:00.999999`. - (@toplevel $root:ident [$($path:tt)*] $($($k:tt)-+).+ = $yr:tt - $mo:tt - $dhr:tt : $min:tt : $sec:tt . $frac:tt $($rest:tt)*) => { - $crate::toml_internal!(@topleveldatetime $root [$($path)*] $($($k)-+).+ = ($yr - $mo - $dhr : $min : $sec . $frac) $($rest)*); - }; - // Space instead of T. - (@toplevel $root:ident [$($path:tt)*] $($($k:tt)-+).+ = $yr:tt - $mo:tt - $day:tt $hr:tt : $min:tt : $sec:tt . $frac:tt $($rest:tt)*) => { - $crate::toml_internal!(@topleveldatetime $root [$($path)*] $($($k)-+).+ = ($yr - $mo - $day T $hr : $min : $sec . $frac) $($rest)*); - }; - - // Parse offset datetime `key = 1979-05-27T07:32:00Z` and local datetime `key = 1979-05-27T07:32:00`. - (@toplevel $root:ident [$($path:tt)*] $($($k:tt)-+).+ = $yr:tt - $mo:tt - $dhr:tt : $min:tt : $sec:tt $($rest:tt)*) => { - $crate::toml_internal!(@topleveldatetime $root [$($path)*] $($($k)-+).+ = ($yr - $mo - $dhr : $min : $sec) $($rest)*); - }; - // Space instead of T. - (@toplevel $root:ident [$($path:tt)*] $($($k:tt)-+).+ = $yr:tt - $mo:tt - $day:tt $hr:tt : $min:tt : $sec:tt $($rest:tt)*) => { - $crate::toml_internal!(@topleveldatetime $root [$($path)*] $($($k)-+).+ = ($yr - $mo - $day T $hr : $min : $sec) $($rest)*); - }; - - // Parse local date `key = 1979-05-27`. - (@toplevel $root:ident [$($path:tt)*] $($($k:tt)-+).+ = $yr:tt - $mo:tt - $day:tt $($rest:tt)*) => { - $crate::toml_internal!(@topleveldatetime $root [$($path)*] $($($k)-+).+ = ($yr - $mo - $day) $($rest)*); - }; - - // Parse local time `key = 00:32:00.999999`. - (@toplevel $root:ident [$($path:tt)*] $($($k:tt)-+).+ = $hr:tt : $min:tt : $sec:tt . $frac:tt $($rest:tt)*) => { - $crate::toml_internal!(@topleveldatetime $root [$($path)*] $($($k)-+).+ = ($hr : $min : $sec . $frac) $($rest)*); - }; - - // Parse local time `key = 07:32:00`. - (@toplevel $root:ident [$($path:tt)*] $($($k:tt)-+).+ = $hr:tt : $min:tt : $sec:tt $($rest:tt)*) => { - $crate::toml_internal!(@topleveldatetime $root [$($path)*] $($($k)-+).+ = ($hr : $min : $sec) $($rest)*); - }; - - // Parse any other `key = value` including string, inline array, inline - // table, number, and boolean. - (@toplevel $root:ident [$($path:tt)*] $($($k:tt)-+).+ = $v:tt $($rest:tt)*) => {{ - $crate::macros::insert_toml( - &mut $root, - &[$($path)* $(&concat!($("-", $crate::toml_internal!(@path $k),)+)[1..], )+], - $crate::toml_internal!(@value $v)); - $crate::toml_internal!(@toplevel $root [$($path)*] $($rest)*); - }}; - - // Parse array header `[[bin]]`. - (@toplevel $root:ident $oldpath:tt [[$($($path:tt)-+).+]] $($rest:tt)*) => { - $crate::macros::push_toml( - &mut $root, - &[$(&concat!($("-", $crate::toml_internal!(@path $path),)+)[1..],)+]); - $crate::toml_internal!(@toplevel $root [$(&concat!($("-", $crate::toml_internal!(@path $path),)+)[1..],)+] $($rest)*); - }; - - // Parse table header `[patch.crates-io]`. - (@toplevel $root:ident $oldpath:tt [$($($path:tt)-+).+] $($rest:tt)*) => { - $crate::macros::insert_toml( - &mut $root, - &[$(&concat!($("-", $crate::toml_internal!(@path $path),)+)[1..],)+], - $crate::Value::Table($crate::value::Table::new())); - $crate::toml_internal!(@toplevel $root [$(&concat!($("-", $crate::toml_internal!(@path $path),)+)[1..],)+] $($rest)*); - }; - - // Parse datetime from string and insert into table. - (@topleveldatetime $root:ident [$($path:tt)*] $($($k:tt)-+).+ = ($($datetime:tt)+) $($rest:tt)*) => { - $crate::macros::insert_toml( - &mut $root, - &[$($path)* $(&concat!($("-", $crate::toml_internal!(@path $k),)+)[1..], )+], - $crate::Value::Datetime(concat!($(stringify!($datetime)),+).parse().unwrap())); - $crate::toml_internal!(@toplevel $root [$($path)*] $($rest)*); - }; - - // Turn a path segment into a string. - (@path $ident:ident) => { - stringify!($ident) - }; - - // For a path segment that is not an ident, expect that it is already a - // quoted string, like in `[target."cfg(windows)".dependencies]`. - (@path $quoted:tt) => { - $quoted - }; - - // Construct a Value from an inline table. - (@value { $($inline:tt)* }) => {{ - let mut table = $crate::Value::Table($crate::value::Table::new()); - $crate::toml_internal!(@trailingcomma (@table table) $($inline)*); - table - }}; - - // Construct a Value from an inline array. - (@value [ $($inline:tt)* ]) => {{ - let mut array = $crate::value::Array::new(); - $crate::toml_internal!(@trailingcomma (@array array) $($inline)*); - $crate::Value::Array(array) - }}; - - (@value (-nan)) => { - $crate::Value::Float(-::std::f64::NAN) - }; - - (@value (nan)) => { - $crate::Value::Float(::std::f64::NAN) - }; - - (@value nan) => { - $crate::Value::Float(::std::f64::NAN) - }; - - (@value (-inf)) => { - $crate::Value::Float(::std::f64::NEG_INFINITY) - }; - - (@value (inf)) => { - $crate::Value::Float(::std::f64::INFINITY) - }; - - (@value inf) => { - $crate::Value::Float(::std::f64::INFINITY) - }; - - // Construct a Value from any other type, probably string or boolean or number. - (@value $v:tt) => {{ - // TODO: Implement this with something like serde_json::to_value instead. - let de = $crate::macros::IntoDeserializer::<$crate::de::Error>::into_deserializer($v); - <$crate::Value as $crate::macros::Deserialize>::deserialize(de).unwrap() - }}; - - // Base case of inline table. - (@table $root:ident) => {}; - - // Parse negative number `key = -value`. - (@table $root:ident $($($k:tt)-+).+ = - $v:tt , $($rest:tt)*) => { - $crate::toml_internal!(@table $root $($($k)-+).+ = (-$v) , $($rest)*); - }; - - // Parse positive number `key = +value`. - (@table $root:ident $($($k:tt)-+).+ = + $v:tt , $($rest:tt)*) => { - $crate::toml_internal!(@table $root $($($k)-+).+ = ($v) , $($rest)*); - }; - - // Parse offset datetime `key = 1979-05-27T00:32:00.999999-07:00`. - (@table $root:ident $($($k:tt)-+).+ = $yr:tt - $mo:tt - $dhr:tt : $min:tt : $sec:tt . $frac:tt - $tzh:tt : $tzm:tt , $($rest:tt)*) => { - $crate::toml_internal!(@tabledatetime $root $($($k)-+).+ = ($yr - $mo - $dhr : $min : $sec . $frac - $tzh : $tzm) $($rest)*); - }; - // Space instead of T. - (@table $root:ident $($($k:tt)-+).+ = $yr:tt - $mo:tt - $day:tt $hr:tt : $min:tt : $sec:tt . $frac:tt - $tzh:tt : $tzm:tt , $($rest:tt)*) => { - $crate::toml_internal!(@tabledatetime $root $($($k)-+).+ = ($yr - $mo - $day T $hr : $min : $sec . $frac - $tzh : $tzm) $($rest)*); - }; - - // Parse offset datetime `key = 1979-05-27T00:32:00-07:00`. - (@table $root:ident $($($k:tt)-+).+ = $yr:tt - $mo:tt - $dhr:tt : $min:tt : $sec:tt - $tzh:tt : $tzm:tt , $($rest:tt)*) => { - $crate::toml_internal!(@tabledatetime $root $($($k)-+).+ = ($yr - $mo - $dhr : $min : $sec - $tzh : $tzm) $($rest)*); - }; - // Space instead of T. - (@table $root:ident $($($k:tt)-+).+ = $yr:tt - $mo:tt - $day:tt $hr:tt : $min:tt : $sec:tt - $tzh:tt : $tzm:tt , $($rest:tt)*) => { - $crate::toml_internal!(@tabledatetime $root $($($k)-+).+ = ($yr - $mo - $day T $hr : $min : $sec - $tzh : $tzm) $($rest)*); - }; - - // Parse local datetime `key = 1979-05-27T00:32:00.999999`. - (@table $root:ident $($($k:tt)-+).+ = $yr:tt - $mo:tt - $dhr:tt : $min:tt : $sec:tt . $frac:tt , $($rest:tt)*) => { - $crate::toml_internal!(@tabledatetime $root $($($k)-+).+ = ($yr - $mo - $dhr : $min : $sec . $frac) $($rest)*); - }; - // Space instead of T. - (@table $root:ident $($($k:tt)-+).+ = $yr:tt - $mo:tt - $day:tt $hr:tt : $min:tt : $sec:tt . $frac:tt , $($rest:tt)*) => { - $crate::toml_internal!(@tabledatetime $root $($($k)-+).+ = ($yr - $mo - $day T $hr : $min : $sec . $frac) $($rest)*); - }; - - // Parse offset datetime `key = 1979-05-27T07:32:00Z` and local datetime `key = 1979-05-27T07:32:00`. - (@table $root:ident $($($k:tt)-+).+ = $yr:tt - $mo:tt - $dhr:tt : $min:tt : $sec:tt , $($rest:tt)*) => { - $crate::toml_internal!(@tabledatetime $root $($($k)-+).+ = ($yr - $mo - $dhr : $min : $sec) $($rest)*); - }; - // Space instead of T. - (@table $root:ident $($($k:tt)-+).+ = $yr:tt - $mo:tt - $day:tt $hr:tt : $min:tt : $sec:tt , $($rest:tt)*) => { - $crate::toml_internal!(@tabledatetime $root $($($k)-+).+ = ($yr - $mo - $day T $hr : $min : $sec) $($rest)*); - }; - - // Parse local date `key = 1979-05-27`. - (@table $root:ident $($($k:tt)-+).+ = $yr:tt - $mo:tt - $day:tt , $($rest:tt)*) => { - $crate::toml_internal!(@tabledatetime $root $($($k)-+).+ = ($yr - $mo - $day) $($rest)*); - }; - - // Parse local time `key = 00:32:00.999999`. - (@table $root:ident $($($k:tt)-+).+ = $hr:tt : $min:tt : $sec:tt . $frac:tt , $($rest:tt)*) => { - $crate::toml_internal!(@tabledatetime $root $($($k)-+).+ = ($hr : $min : $sec . $frac) $($rest)*); - }; - - // Parse local time `key = 07:32:00`. - (@table $root:ident $($($k:tt)-+).+ = $hr:tt : $min:tt : $sec:tt , $($rest:tt)*) => { - $crate::toml_internal!(@tabledatetime $root $($($k)-+).+ = ($hr : $min : $sec) $($rest)*); - }; - - // Parse any other type, probably string or boolean or number. - (@table $root:ident $($($k:tt)-+).+ = $v:tt , $($rest:tt)*) => { - $crate::macros::insert_toml( - &mut $root, - &[$(&concat!($("-", $crate::toml_internal!(@path $k),)+)[1..], )+], - $crate::toml_internal!(@value $v)); - $crate::toml_internal!(@table $root $($rest)*); - }; - - // Parse a Datetime from string and continue in @table state. - (@tabledatetime $root:ident $($($k:tt)-+).+ = ($($datetime:tt)*) $($rest:tt)*) => { - $crate::macros::insert_toml( - &mut $root, - &[$(&concat!($("-", $crate::toml_internal!(@path $k),)+)[1..], )+], - $crate::Value::Datetime(concat!($(stringify!($datetime)),+).parse().unwrap())); - $crate::toml_internal!(@table $root $($rest)*); - }; - - // Base case of inline array. - (@array $root:ident) => {}; - - // Parse negative number `-value`. - (@array $root:ident - $v:tt , $($rest:tt)*) => { - $crate::toml_internal!(@array $root (-$v) , $($rest)*); - }; - - // Parse positive number `+value`. - (@array $root:ident + $v:tt , $($rest:tt)*) => { - $crate::toml_internal!(@array $root ($v) , $($rest)*); - }; - - // Parse offset datetime `1979-05-27T00:32:00.999999-07:00`. - (@array $root:ident $yr:tt - $mo:tt - $dhr:tt : $min:tt : $sec:tt . $frac:tt - $tzh:tt : $tzm:tt , $($rest:tt)*) => { - $crate::toml_internal!(@arraydatetime $root ($yr - $mo - $dhr : $min : $sec . $frac - $tzh : $tzm) $($rest)*); - }; - // Space instead of T. - (@array $root:ident $yr:tt - $mo:tt - $day:tt $hr:tt : $min:tt : $sec:tt . $frac:tt - $tzh:tt : $tzm:tt , $($rest:tt)*) => { - $crate::toml_internal!(@arraydatetime $root ($yr - $mo - $day T $hr : $min : $sec . $frac - $tzh : $tzm) $($rest)*); - }; - - // Parse offset datetime `1979-05-27T00:32:00-07:00`. - (@array $root:ident $yr:tt - $mo:tt - $dhr:tt : $min:tt : $sec:tt - $tzh:tt : $tzm:tt , $($rest:tt)*) => { - $crate::toml_internal!(@arraydatetime $root ($yr - $mo - $dhr : $min : $sec - $tzh : $tzm) $($rest)*); - }; - // Space instead of T. - (@array $root:ident $yr:tt - $mo:tt - $day:tt $hr:tt : $min:tt : $sec:tt - $tzh:tt : $tzm:tt , $($rest:tt)*) => { - $crate::toml_internal!(@arraydatetime $root ($yr - $mo - $day T $hr : $min : $sec - $tzh : $tzm) $($rest)*); - }; - - // Parse local datetime `1979-05-27T00:32:00.999999`. - (@array $root:ident $yr:tt - $mo:tt - $dhr:tt : $min:tt : $sec:tt . $frac:tt , $($rest:tt)*) => { - $crate::toml_internal!(@arraydatetime $root ($yr - $mo - $dhr : $min : $sec . $frac) $($rest)*); - }; - // Space instead of T. - (@array $root:ident $yr:tt - $mo:tt - $day:tt $hr:tt : $min:tt : $sec:tt . $frac:tt , $($rest:tt)*) => { - $crate::toml_internal!(@arraydatetime $root ($yr - $mo - $day T $hr : $min : $sec . $frac) $($rest)*); - }; - - // Parse offset datetime `1979-05-27T07:32:00Z` and local datetime `1979-05-27T07:32:00`. - (@array $root:ident $yr:tt - $mo:tt - $dhr:tt : $min:tt : $sec:tt , $($rest:tt)*) => { - $crate::toml_internal!(@arraydatetime $root ($yr - $mo - $dhr : $min : $sec) $($rest)*); - }; - // Space instead of T. - (@array $root:ident $yr:tt - $mo:tt - $day:tt $hr:tt : $min:tt : $sec:tt , $($rest:tt)*) => { - $crate::toml_internal!(@arraydatetime $root ($yr - $mo - $day T $hr : $min : $sec) $($rest)*); - }; - - // Parse local date `1979-05-27`. - (@array $root:ident $yr:tt - $mo:tt - $day:tt , $($rest:tt)*) => { - $crate::toml_internal!(@arraydatetime $root ($yr - $mo - $day) $($rest)*); - }; - - // Parse local time `00:32:00.999999`. - (@array $root:ident $hr:tt : $min:tt : $sec:tt . $frac:tt , $($rest:tt)*) => { - $crate::toml_internal!(@arraydatetime $root ($hr : $min : $sec . $frac) $($rest)*); - }; - - // Parse local time `07:32:00`. - (@array $root:ident $hr:tt : $min:tt : $sec:tt , $($rest:tt)*) => { - $crate::toml_internal!(@arraydatetime $root ($hr : $min : $sec) $($rest)*); - }; - - // Parse any other type, probably string or boolean or number. - (@array $root:ident $v:tt , $($rest:tt)*) => { - $root.push($crate::toml_internal!(@value $v)); - $crate::toml_internal!(@array $root $($rest)*); - }; - - // Parse a Datetime from string and continue in @array state. - (@arraydatetime $root:ident ($($datetime:tt)*) $($rest:tt)*) => { - $root.push($crate::Value::Datetime(concat!($(stringify!($datetime)),+).parse().unwrap())); - $crate::toml_internal!(@array $root $($rest)*); - }; - - // No trailing comma required if the tokens are empty. - (@trailingcomma ($($args:tt)*)) => { - $crate::toml_internal!($($args)*); - }; - - // Tokens end with a trailing comma, do not append another one. - (@trailingcomma ($($args:tt)*) ,) => { - $crate::toml_internal!($($args)* ,); - }; - - // Tokens end with something other than comma, append a trailing comma. - (@trailingcomma ($($args:tt)*) $last:tt) => { - $crate::toml_internal!($($args)* $last ,); - }; - - // Not yet at the last token. - (@trailingcomma ($($args:tt)*) $first:tt $($rest:tt)+) => { - $crate::toml_internal!(@trailingcomma ($($args)* $first) $($rest)+); - }; -} - -// Called when parsing a `key = value` pair. -// Inserts an entry into the table at the given path. -pub fn insert_toml(root: &mut Value, path: &[&str], value: Value) { - *traverse(root, path) = value; -} - -// Called when parsing an `[[array header]]`. -// Pushes an empty table onto the array at the given path. -pub fn push_toml(root: &mut Value, path: &[&str]) { - let target = traverse(root, path); - if !target.is_array() { - *target = Value::Array(Array::new()); - } - target - .as_array_mut() - .unwrap() - .push(Value::Table(Table::new())); -} - -fn traverse<'a>(root: &'a mut Value, path: &[&str]) -> &'a mut Value { - let mut cur = root; - for &key in path { - // Lexical lifetimes :D - let cur1 = cur; - let cur2; - - // From the TOML spec: - // - // > Each double-bracketed sub-table will belong to the most recently - // > defined table element above it. - if cur1.is_array() { - cur2 = cur1.as_array_mut().unwrap().last_mut().unwrap(); - } else { - cur2 = cur1; - }; - - // We are about to index into this value, so it better be a table. - if !cur2.is_table() { - *cur2 = Value::Table(Table::new()); - } - - if !cur2.as_table().unwrap().contains_key(key) { - // Insert an empty table for the next loop iteration to point to. - let empty = Value::Table(Table::new()); - cur2.as_table_mut().unwrap().insert(key.to_owned(), empty); - } - - // Step into the current table. - cur = cur2.as_table_mut().unwrap().get_mut(key).unwrap(); - } - cur -} |