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-rw-r--r--vendor/syn/src/tt.rs107
1 files changed, 0 insertions, 107 deletions
diff --git a/vendor/syn/src/tt.rs b/vendor/syn/src/tt.rs
deleted file mode 100644
index d8dc9aa..0000000
--- a/vendor/syn/src/tt.rs
+++ /dev/null
@@ -1,107 +0,0 @@
-use proc_macro2::{Delimiter, TokenStream, TokenTree};
-use std::hash::{Hash, Hasher};
-
-pub(crate) struct TokenTreeHelper<'a>(pub &'a TokenTree);
-
-impl<'a> PartialEq for TokenTreeHelper<'a> {
- fn eq(&self, other: &Self) -> bool {
- use proc_macro2::Spacing;
-
- match (self.0, other.0) {
- (TokenTree::Group(g1), TokenTree::Group(g2)) => {
- match (g1.delimiter(), g2.delimiter()) {
- (Delimiter::Parenthesis, Delimiter::Parenthesis)
- | (Delimiter::Brace, Delimiter::Brace)
- | (Delimiter::Bracket, Delimiter::Bracket)
- | (Delimiter::None, Delimiter::None) => {}
- _ => return false,
- }
-
- let s1 = g1.stream().into_iter();
- let mut s2 = g2.stream().into_iter();
-
- for item1 in s1 {
- let item2 = match s2.next() {
- Some(item) => item,
- None => return false,
- };
- if TokenTreeHelper(&item1) != TokenTreeHelper(&item2) {
- return false;
- }
- }
- s2.next().is_none()
- }
- (TokenTree::Punct(o1), TokenTree::Punct(o2)) => {
- o1.as_char() == o2.as_char()
- && match (o1.spacing(), o2.spacing()) {
- (Spacing::Alone, Spacing::Alone) | (Spacing::Joint, Spacing::Joint) => true,
- _ => false,
- }
- }
- (TokenTree::Literal(l1), TokenTree::Literal(l2)) => l1.to_string() == l2.to_string(),
- (TokenTree::Ident(s1), TokenTree::Ident(s2)) => s1 == s2,
- _ => false,
- }
- }
-}
-
-impl<'a> Hash for TokenTreeHelper<'a> {
- fn hash<H: Hasher>(&self, h: &mut H) {
- use proc_macro2::Spacing;
-
- match self.0 {
- TokenTree::Group(g) => {
- 0u8.hash(h);
- match g.delimiter() {
- Delimiter::Parenthesis => 0u8.hash(h),
- Delimiter::Brace => 1u8.hash(h),
- Delimiter::Bracket => 2u8.hash(h),
- Delimiter::None => 3u8.hash(h),
- }
-
- for item in g.stream() {
- TokenTreeHelper(&item).hash(h);
- }
- 0xffu8.hash(h); // terminator w/ a variant we don't normally hash
- }
- TokenTree::Punct(op) => {
- 1u8.hash(h);
- op.as_char().hash(h);
- match op.spacing() {
- Spacing::Alone => 0u8.hash(h),
- Spacing::Joint => 1u8.hash(h),
- }
- }
- TokenTree::Literal(lit) => (2u8, lit.to_string()).hash(h),
- TokenTree::Ident(word) => (3u8, word).hash(h),
- }
- }
-}
-
-pub(crate) struct TokenStreamHelper<'a>(pub &'a TokenStream);
-
-impl<'a> PartialEq for TokenStreamHelper<'a> {
- fn eq(&self, other: &Self) -> bool {
- let left = self.0.clone().into_iter().collect::<Vec<_>>();
- let right = other.0.clone().into_iter().collect::<Vec<_>>();
- if left.len() != right.len() {
- return false;
- }
- for (a, b) in left.into_iter().zip(right) {
- if TokenTreeHelper(&a) != TokenTreeHelper(&b) {
- return false;
- }
- }
- true
- }
-}
-
-impl<'a> Hash for TokenStreamHelper<'a> {
- fn hash<H: Hasher>(&self, state: &mut H) {
- let tts = self.0.clone().into_iter().collect::<Vec<_>>();
- tts.len().hash(state);
- for tt in tts {
- TokenTreeHelper(&tt).hash(state);
- }
- }
-}