proc_macro: Tweak doc comments and negative literals #49545
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This commit tweaks the tokenization of a doc comment to use `#[doc = "..."]` like `macro_rules!` does (instead of treating it as a `Literal` token). Additionally it fixes treatment of negative literals in the compiler, for exapmle `Literal::i32(-1)`. The current fix is a bit of a hack around the current compiler implementation, providing a fix at the proc-macro layer rather than the libsyntax layer.
eddyb
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Apr 1, 2018
| tt!(TokenNode::Literal(self::Literal(Literal(Lit::Str_(c), None)))), | ||
| ].into_iter().collect(); | ||
| stack.push(tt!(TokenNode::Group(Delimiter::Bracket, stream))); | ||
| op!('#') |
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Oh this is easier than I expected. Can't wait to rebase over it!
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@bors r+ |
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📌 Commit ec1a8f0 has been approved by |
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proc_macro: Tweak doc comments and negative literals This commit tweaks the tokenization of a doc comment to use `#[doc = "..."]` like `macro_rules!` does (instead of treating it as a `Literal` token). Additionally it fixes treatment of negative literals in the compiler, for exapmle `Literal::i32(-1)`. The current fix is a bit of a hack around the current compiler implementation, providing a fix at the proc-macro layer rather than the libsyntax layer. Closes #48889
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☀️ Test successful - status-appveyor, status-travis |
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Currently libproc_macro does not use `DotEq` token. rust-lang#49545 changed libproc_macro to not generate `DotEq` token.
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…, r=petrochenkov Remove not used `DotEq` token Currently libproc_macro does not use `DotEq` token. rust-lang#49545 changed libproc_macro to not generate `DotEq` token.
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This commit tweaks the tokenization of a doc comment to use
#[doc = "..."]like
macro_rules!does (instead of treating it as aLiteraltoken).Additionally it fixes treatment of negative literals in the compiler, for
exapmle
Literal::i32(-1). The current fix is a bit of a hack around thecurrent compiler implementation, providing a fix at the proc-macro layer rather
than the libsyntax layer.
Closes #48889