4 use std::hash::{Hash, Hasher};
51     fn hash<H: Hasher>(&self, h: &mut H) {  in hash()  method
56                 0u8.hash(h);  in hash()
58                     Delimiter::Parenthesis => 0u8.hash(h),  in hash()
59                     Delimiter::Brace => 1u8.hash(h),  in hash()
60                     Delimiter::Bracket => 2u8.hash(h),  in hash()
61                     Delimiter::None => 3u8.hash(h),  in hash()
65                     TokenTreeHelper(&item).hash(h);  in hash()
67                 0xFFu8.hash(h); // terminator w/ a variant we don't normally hash  in hash()
70                 1u8.hash(h);  in hash()
71                 op.as_char().hash(h);  in hash()
73                     Spacing::Alone => 0u8.hash(h),  in hash()
74                     Spacing::Joint => 1u8.hash(h),  in hash()
77             TokenTree::Literal(lit) => (2u8, lit.to_string()).hash(h),  in hash()
78             TokenTree::Ident(word) => (3u8, word).hash(h),  in hash()
102     fn hash<H: Hasher>(&self, state: &mut H) {  in hash()  method
104         tts.len().hash(state);  in hash()
106             TokenTreeHelper(&tt).hash(state);  in hash()