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2019-06-23let_chains: Fix bugs in pretty printing.Mazdak Farrokhzad-2/+2
2019-06-23let_chains: Refactor parse_{if,while}_expr a bit.Mazdak Farrokhzad-9/+12
2019-06-23let_chains: Move feature gating to pre-expansion.Mazdak Farrokhzad-3/+17
2019-06-23let_chains: Inline visit_expr_with_let_maybe_allowed.Mazdak Farrokhzad-0/+1
2019-06-23let_chains: readd kw::let to ident_can_begin_expr.Mazdak Farrokhzad-2/+1
2019-06-23let_chains: Fix outdated doc-comment re. 'parse_if_expr'.Mazdak Farrokhzad-1/+1
2019-06-23let_chains: Comment out Let in ident_can_begin_expr.Mazdak Farrokhzad-1/+2
2019-06-23let_chains: Add support for parsing let expressions.Mazdak Farrokhzad-49/+19
2019-06-23let_chains: Remove ast::ExprKind::{IfLet, WhileLet} from visitors and ↵Mazdak Farrokhzad-2/+0
introduce ::Let.
2019-06-21Implement arbitrary_enum_discriminantJohn Wrenn-36/+43
2019-06-20Add unit tests for unescaping raw (byte) stringsIgor Matuszewski-0/+30
2019-06-18Remove the HirId/NodeId from where clausesMatthew Jasper-2/+0
Also give them a span in the HIR
2019-06-12Auto merge of #61612 - nnethercote:improve-parse_bottom_expr, r=petrochenkovbors-10/+22
Special-case literals in `parse_bottom_expr`. This makes parsing faster, particularly for code with large constants, for two reasons: - it skips all the keyword comparisons for literals; - it skips the allocation done by the `mk_expr` call in `parse_literal_maybe_minus`. r? @petrochenkov
2019-06-12Auto merge of #60669 - c410-f3r:attrs-fn, r=petrochenkovbors-33/+69
Allow attributes in formal function parameters Implements https://github.com/rust-lang/rust/issues/60406. This is my first contribution to the compiler and since this is a large and complex project, I am not fully aware of the consequences of the changes I have made. **TODO** - [x] Forbid some built-in attributes. - [x] Expand cfg/cfg_attr
2019-06-12Rollup merge of #61654 - Electron-libre:use_slice_patterns_in_rustc, ↵Mazdak Farrokhzad-37/+27
r=oli-obk,Centril use pattern matching for slices destructuring refs #61542 Use slices pattern where it seems to make sense .
2019-06-10Auto merge of #60793 - Xanewok:raw-string-cleanup, r=petrochenkovbors-128/+161
lexer: Disallow bare CR in raw byte strings Handles bare CR ~but doesn't translate `\r\n` to `\n` yet in raw strings yet~ and translates CRLF to LF in raw strings. As a side-note I think it'd be good to change the `unescape_` to return plain iterators to reduce some boilerplate (e.g. `has_error` could benefit from collecting `Result<T>` and aborting early on errors) but will do that separately, unless I missed something here that prevents it. @matklad @petrochenkov thoughts?
2019-06-10Don't suggest using \r in raw stringsIgor Matuszewski-1/+7
2019-06-10Special-case literals in `parse_bottom_expr`.Nicholas Nethercote-10/+22
This makes parsing faster, particularly for code with large constants, for two reasons: - it skips all the keyword comparisons for literals; - it replaces the unnecessary `parse_literal_maybe_minus` call with `parse_lit`, avoiding an unnecessary allocation via `mk_expr`.
2019-06-09Use char byte calculation using existing iteratorIgor Matuszewski-11/+13
2019-06-09Actually translate CRLF in raw byte strings and unify unescape implIgor Matuszewski-25/+69
2019-06-09Add a doc comment for scan_raw_stringIgor Matuszewski-0/+2
2019-06-09Allow attributes in formal function parametersCaio-33/+69
2019-06-09Translate CRLF -> LF in raw (byte) stringsIgor Matuszewski-34/+18
2019-06-08Prohibit bare CRs in raw byte stringsIgor Matuszewski-70/+53
2019-06-08Validate and transcribe raw strings via unescape moduleIgor Matuszewski-46/+59
2019-06-08syntax: Move some `Token` methods aroundVadim Petrochenkov-48/+40
2019-06-08syntax: Remove `Deref` impl from `Token`Vadim Petrochenkov-31/+24
2019-06-08syntax: Move most of the `TokenKind` methods to `Token`Vadim Petrochenkov-81/+49
2019-06-08fix libsyntax testCedric-4/+4
2019-06-08Remove redundant, commented out codeIgor Matuszewski-6/+0
It was commented out as part of https://github.com/rust-lang/rust/commit/8a8e497ae786ffc032c1e68fc23da0edcf6fa5e3. Done probably by accident, since the code in question was moved to a match arm, along with newly introduced logic to detect bare CRs in raw strings.
2019-06-08Separate a `scan_raw_string` (similar `raw_byte` variant)Igor Matuszewski-77/+82
2019-06-08Clean up minor bitsIgor Matuszewski-2/+2
2019-06-08cast vec to slicesCedric-5/+5
2019-06-08use default binding mode in match clausesCedric-5/+5
2019-06-08fix bad style for structsCedric-8/+8
2019-06-08improve styleCedric-13/+10
2019-06-08use pattern matching for slices destructuringCedric-31/+24
2019-06-08Rollup merge of #61616 - petrochenkov:parsderef, r=oli-obkMazdak Farrokhzad-248/+238
parser: Remove `Deref` impl from `Parser` Follow up to https://github.com/rust-lang/rust/pull/61541 You have to write `self.token.span` instead of `self.span` in the parser now, which is not nice, but not too bad either, I guess. Not sure. Probably still better than people using both and being confused about the definition point of `span`. r? @oli-obk @estebank
2019-06-07syntax: Treat error literals in more principled wayVadim Petrochenkov-1/+5
2019-06-07parser: Remove `look_ahead_span`Vadim Petrochenkov-18/+5
2019-06-07parser: Remove `Deref` impl from `Parser`Vadim Petrochenkov-10/+0
2019-06-07parser: `self.span` -> `self.token.span`Vadim Petrochenkov-224/+237
2019-06-06Address review commentsVadim Petrochenkov-4/+8
2019-06-06Some code cleanup and tidy/test fixesVadim Petrochenkov-41/+54
2019-06-06syntax: Switch function parameter order in `TokenTree::token`Vadim Petrochenkov-20/+20
2019-06-06syntax: Use `Token` in some more placesVadim Petrochenkov-4/+4
2019-06-06syntax: Remove duplicate span from `token::Ident`Vadim Petrochenkov-104/+105
2019-06-06syntax: Remove duplicate span from `token::Lifetime`Vadim Petrochenkov-30/+34
2019-06-06syntax: Add some helper methods to `Token`Vadim Petrochenkov-51/+54
2019-06-06syntax: Use `Token` in `Parser`Vadim Petrochenkov-106/+107
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