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3974 commits

Author SHA1 Message Date
Aleksey Kladov
3e362a4800 make unwrap_or_abort non-generic again 2019-07-04 09:12:33 +03:00
Aleksey Kladov
3035a05a74 remove unused mk_sp_and_raw 2019-07-04 09:12:33 +03:00
Aleksey Kladov
8bea334a26 don't rely on spans when checking tokens for jointness 2019-07-04 09:12:24 +03:00
Aleksey Kladov
1c6eb19d2f slightly comment lexer API 2019-07-04 09:08:45 +03:00
Aleksey Kladov
30fa99e5b8 move constructors to top 2019-07-04 09:08:45 +03:00
Aleksey Kladov
601bad86b2 cleanup lexer constructors 2019-07-04 09:08:45 +03:00
Aleksey Kladov
256df83f64 remove peek_span_src_raw from StringReader 2019-07-04 09:08:39 +03:00
Aleksey Kladov
e9dc95c86e remove peek_token from StringReader 2019-07-04 09:01:37 +03:00
Aleksey Kladov
830ff4a592 remove StringReader::peek 
The reader itself doesn't need ability to peek tokens, so it's better
if clients implement this functionality.

This hopefully becomes especially easy once we use iterator interface
for lexer, but this is not too easy at the moment, because of buffered
errors.
 2019-07-04 09:01:37 +03:00
Mazdak Farrokhzad
c0ec567214
Rollup merge of #62297 - matklad:peek-delimited, r=petrochenkov 
refactor check_for_substitution

No behavior change, just flatter and simpler code.

r? @petrochenkov
 2019-07-04 01:38:55 +02:00
Mazdak Farrokhzad
8867ba19de
Rollup merge of #62258 - petrochenkov:idclean, r=Centril 
syntax: Unsupport `foo! bar { ... }` macros in the parser

Their support in expansion was removed in https://github.com/rust-lang/rust/pull/61606.

Also un-reserve `macro_rules` as a macro name, there's no ambiguity between `macro_rules` definitions and macro calls (it also wasn't reserved correctly).

cc https://github.com/rust-lang-nursery/wg-grammar/issues/51
 2019-07-04 01:38:49 +02:00
Mazdak Farrokhzad
bb7fbb99a2 Add separate 'async_closure' feature gate. 2019-07-03 23:59:36 +02:00
Aleksey Kladov
dc088b26ce refactor check_for_substitution 
No behavior change, just flatter and simpler code
 2019-07-02 11:16:33 +03:00
Chris Gregory
636f5e6d11 Convert more usages over 2019-07-01 20:21:12 -07:00
Vadim Petrochenkov
d0dc41a2bd Address review comments 2019-07-01 12:20:54 +03:00
Vadim Petrochenkov
3f39dc1b90 syntax: Unsupport foo! bar { ... } macros in the parser 
Unreserve `macro_rules` as a macro name
 2019-07-01 12:20:54 +03:00
Mazdak Farrokhzad
ce1d95af4c Always parse 'async unsafe fn' + properly ban in 2015. 2019-06-29 21:38:26 +02:00
Mark Rousskov
da5c835c8b Remove io::Result from syntax::print 
Since we're now writing directly to the vector, there's no need to
thread results through the whole printing infrastructure
 2019-06-29 09:10:17 -04:00
Mazdak Farrokhzad
0fe028eae0
Rollup merge of #62154 - mark-i-m:old-fixme, r=Centril 
Remove old fixme

fixed in https://github.com/rust-lang/rust/pull/60160

r? @Centril
 2019-06-27 23:01:11 +02:00
Mazdak Farrokhzad
4aa3e27231
Rollup merge of #62131 - Xanewok:clip-some-nits, r=petrochenkov 
libsyntax: Fix some Clippy warnings

When I was working on it before a lot of these popped up in the RLS so I figured I'll send a small patch fixing only the (hopefully) uncontroversial ones.

Others that could be also fixed included also [`clippy::print_with_newline`](https://rust-lang.github.io/rust-clippy/master/index.html#print_with_newline) and [`clippy::cast_lossless`](https://rust-lang.github.io/rust-clippy/master/index.html#cast_lossless). Should I add them as well?

since most of it touches libsyntax...
r? @petrochenkov
 2019-06-27 23:01:09 +02:00
Mazdak Farrokhzad
bc335d6c16
Rollup merge of #62124 - matklad:without-with, r=petrochenkov 
refactor lexer to use idiomatic borrowing
 2019-06-27 23:01:07 +02:00
Mark Mansi
182ce772ef remove old fixme 2019-06-26 11:21:59 -05:00
Igor Matuszewski
12806b7050 Fix clippy::redundant_field_names 2019-06-26 13:59:58 +02:00
Aleksey Kladov
57db25e614 cleanup: rename name_from to symbol_from 
Lexer uses Symbols for a lot of stuff, not only for identifiers, so
the "name" terminology is just confusing.
 2019-06-25 22:30:21 +03:00
Aleksey Kladov
b75021b31e refactor lexer to use idiomatic borrowing 2019-06-25 21:02:19 +03:00
bors
303f77ee1d Auto merge of #60732 - jswrenn:arbitrary_enum_discriminant, r=pnkfelix 
Implement arbitrary_enum_discriminant

Implements RFC rust-lang/rfcs#2363 (tracking issue #60553).
 2019-06-25 15:12:11 +00:00
bors
3cc3486733 Auto merge of #62075 - Centril:guardless-match-arms, r=petrochenkov 
Remove `ast::Guard`

With the introduction of `ast::ExprKind::Let` in https://github.com/rust-lang/rust/pull/60861, the `ast::Guard` structure is now redundant in terms of representing [`if let` guards](https://github.com/rust-lang/rust/issues/51114) in AST since it can be represented by `ExprKind::Let` syntactically. Therefore, we remove `ast::Guard` here.

However, we keep `hir::Guard` because the semantic representation is a different matter and this story is more unclear right now (might involve `goto 'arm` in HIR or something...).

r? @petrochenkov
 2019-06-24 05:00:10 +00:00
Mazdak Farrokhzad
4d53714183 Remove redundant syntax::ast::Guard. 2019-06-23 11:32:16 +02:00
Mazdak Farrokhzad
851066f57e let_chains: Fix bugs in pretty printing. 2019-06-23 01:29:29 +02:00
Mazdak Farrokhzad
7465eb44f0 let_chains: Refactor parse_{if,while}_expr a bit. 2019-06-23 01:29:29 +02:00
Mazdak Farrokhzad
eb4f54a58d let_chains: Move feature gating to pre-expansion. 2019-06-23 01:29:29 +02:00
Mazdak Farrokhzad
d551880267 let_chains: Inline visit_expr_with_let_maybe_allowed. 2019-06-23 01:29:29 +02:00
Mazdak Farrokhzad
92587e41d9 let_chains: readd kw::let to ident_can_begin_expr. 2019-06-23 01:29:29 +02:00
Mazdak Farrokhzad
3b7f0cb7e0 let_chains: Fix outdated doc-comment re. 'parse_if_expr'. 2019-06-23 01:29:29 +02:00
Mazdak Farrokhzad
86250a666e let_chains: Comment out Let in ident_can_begin_expr. 2019-06-23 01:29:29 +02:00
Mazdak Farrokhzad
dff1e379fc let_chains: Add support for parsing let expressions. 2019-06-23 01:29:29 +02:00
Mazdak Farrokhzad
f0ab633e4d let_chains: Remove ast::ExprKind::{IfLet, WhileLet} from visitors and introduce ::Let. 2019-06-23 01:29:29 +02:00
John Wrenn
ac98342e84 Implement arbitrary_enum_discriminant 2019-06-21 11:00:10 -04:00
Igor Matuszewski
047421e69e Add unit tests for unescaping raw (byte) strings 2019-06-20 09:51:15 +02:00
Matthew Jasper
63edd2c358 Remove the HirId/NodeId from where clauses 
Also give them a span in the HIR
 2019-06-18 22:54:51 +01:00
bors
55cee44671 Auto merge of #61612 - nnethercote:improve-parse_bottom_expr, r=petrochenkov 
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
 2019-06-12 16:30:05 +00:00
bors
3f511ade5b Auto merge of #60669 - c410-f3r:attrs-fn, r=petrochenkov 
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
 2019-06-12 07:38:01 +00:00
Mazdak Farrokhzad
9f22708ced
Rollup merge of #61654 - Electron-libre:use_slice_patterns_in_rustc, r=oli-obk,Centril 
use pattern matching for slices destructuring

refs #61542

Use slices pattern where it seems to make sense .
 2019-06-12 04:22:50 +02:00
bors
5e2c11034f Auto merge of #60793 - Xanewok:raw-string-cleanup, r=petrochenkov 
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?
 2019-06-10 23:32:12 +00:00
Igor Matuszewski
630d5f355f Don't suggest using \r in raw strings 2019-06-10 17:32:15 +02:00
Nicholas Nethercote
35b5f43770 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 replaces the unnecessary `parse_literal_maybe_minus` call with
  `parse_lit`, avoiding an unnecessary allocation via `mk_expr`.
 2019-06-10 10:04:25 +10:00
Igor Matuszewski
63dc7da703 Use char byte calculation using existing iterator 2019-06-09 15:44:57 +02:00
Igor Matuszewski
735ac057bb Actually translate CRLF in raw byte strings and unify unescape impl 2019-06-09 15:14:55 +02:00
Igor Matuszewski
3c1d352dc4 Add a doc comment for scan_raw_string 2019-06-09 14:20:29 +02:00
Caio
1eaaf440d5 Allow attributes in formal function parameters 2019-06-09 07:58:40 -03:00