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bors 58d2bad9f7 Auto merge of #78837 - petrochenkov:keyvalexpr, r=davidtwco 
Accept arbitrary expressions in key-value attributes at parse time

Continuation of https://github.com/rust-lang/rust/pull/77271.

We now support arbitrary expressions in values of key-value attributes at parse time.
```
#[my_attr = EXPR]
```
Previously only unsuffixed literals and interpolated expressions (`$expr`) were accepted.

There are two immediate motivational cases for this:
- External doc strings (`#[doc = include_str!("my_doc.md")]`, eliminating the need in https://github.com/rust-lang/rust/issues/44732) and expanding macros in this position in general. Currently such macro expansions are supported in this position in interpolated `$expr`s (the `#[doc = $doc]` idiom).
- Paths (`#[namespace = foo::bar] extern "C++" { ... }`) like proposed in https://github.com/rust-lang/rust/pull/76734.

If the attribute in question survives expansion, then the value is still restricted to unsuffixed literals by a semantic check.
This restriction doesn't prevent the use cases listed above, so this PR keeps it in place for now.

Closes https://github.com/rust-lang/rust/issues/52607.
Previous attempt - https://github.com/rust-lang/rust/pull/67121.
Some more detailed write up on internals - https://internals.rust-lang.org/t/macro-expansion-points-in-attributes/11455.
Tracking issue - https://github.com/rust-lang/rust/issues/78835.
2020-12-10 00:42:22 +00:00
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rustc
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rustc_apfloat
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rustc_arena
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rustc_ast
Accept arbitrary expressions in key-value attributes at parse time
2020-12-09 21:37:32 +03:00
rustc_ast_lowering
Retain assembly operands span when lowering AST to HIR
2020-12-06 20:48:08 +01:00
rustc_ast_passes
Accept arbitrary expressions in key-value attributes at parse time
2020-12-09 21:37:32 +03:00
rustc_ast_pretty
…
rustc_attr
Created NestedMetaItem::name_value_literal_span method
2020-12-01 16:26:51 +01:00
rustc_builtin_macros
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rustc_codegen_cranelift
Auto merge of #77611 - oli-obk:atomic_miri_leakage, r=nagisa
2020-12-09 19:53:23 +00:00
rustc_codegen_llvm
Fixes to Rust coverage
2020-12-07 17:56:19 -08:00
rustc_codegen_ssa
Auto merge of #77611 - oli-obk:atomic_miri_leakage, r=nagisa
2020-12-09 19:53:23 +00:00
rustc_data_structures
…
rustc_driver
Fix unknown-crate when using self-profile with rustdoc
2020-12-01 12:54:03 -05:00
rustc_error_codes
smarter E0390
2020-12-06 20:30:07 +00:00
rustc_errors
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rustc_expand
Rollup merge of #79678 - jyn514:THE-PAPERCLIP-COMETH, r=varkor
2020-12-04 03:30:39 +01:00
rustc_feature
Accept arbitrary expressions in key-value attributes at parse time
2020-12-09 21:37:32 +03:00
rustc_fs_util
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rustc_graphviz
…
rustc_hir
Retain assembly operands span when lowering AST to HIR
2020-12-06 20:48:08 +01:00
rustc_hir_pretty
Retain assembly operands span when lowering AST to HIR
2020-12-06 20:48:08 +01:00
rustc_incremental
Auto merge of #74967 - Aaron1011:feature/incr-def-path-table, r=pnkfelix
2020-12-01 14:30:02 +00:00
rustc_index
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rustc_infer
simplify if let Some(_) = x to if x.is_some() (clippy::redundant_pattern_matching)
2020-12-08 20:27:49 +01:00
rustc_interface
Auto merge of #79586 - jyn514:crate-name, r=davidtwco
2020-12-03 12:14:29 +00:00
rustc_lexer
Fix some clippy lints
2020-12-03 17:08:19 -05:00
rustc_lint
don't create owned values for comparison (clippy::cmp_owned)
2020-12-08 20:27:48 +01:00
rustc_lint_defs
Validate naked functions definitions
2020-12-07 00:00:00 +00:00
rustc_llvm
Auto merge of #78684 - devsnek:inline-asm-wasm, r=Amanieu
2020-12-01 20:23:06 +00:00
rustc_macros
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rustc_metadata
Account for gaps in def path table during decoding
2020-12-08 13:02:53 -05:00
rustc_middle
Auto merge of #79721 - Aaron1011:fix/reuse-def-path-hash, r=wesleywiser
2020-12-09 13:54:07 +00:00
rustc_mir
Rollup merge of #79818 - richkadel:llvm-coverage-counters-2.1.0, r=tmandry
2020-12-09 13:38:27 -08:00
rustc_mir_build
Also generate StorageDead in constants
2020-12-09 10:59:10 +00:00
rustc_parse
Accept arbitrary expressions in key-value attributes at parse time
2020-12-09 21:37:32 +03:00
rustc_parse_format
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rustc_passes
Rollup merge of #79844 - tmiasko:rwu-table-mod, r=lcnr
2020-12-09 13:38:34 -08:00
rustc_plugin_impl
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rustc_privacy
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rustc_query_system
Properly re-use def path hash in incremental mode
2020-12-04 22:16:40 -05:00
rustc_resolve
Tweak diagnostics on shadowing lifetimes/labels
2020-12-02 11:39:42 +09:00
rustc_save_analysis
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rustc_serialize
Fix some clippy lints
2020-12-03 17:08:19 -05:00
rustc_session
Combination of commits
2020-12-03 09:50:10 -08:00
rustc_span
Accept arbitrary expressions in key-value attributes at parse time
2020-12-09 21:37:32 +03:00
rustc_symbol_mangling
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rustc_target
Auto merge of #78684 - devsnek:inline-asm-wasm, r=Amanieu
2020-12-01 20:23:06 +00:00
rustc_trait_selection
remove redundant clones
2020-12-05 12:59:54 +01:00
rustc_traits
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rustc_ty_utils
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rustc_typeck
Rollup merge of #79824 - LingMan:no_replace, r=lcnr
2020-12-09 13:38:31 -08:00