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2017-04-21Implementation of repr struct alignment RFC 1358.Cameron Hart-1/+1
The main changes around rustc::ty::Layout::struct and rustc_trans:adt: * Added primitive_align field which stores alignment before repr align * Always emit field padding when generating the LLVM struct fields * Added methods for adjusting field indexes from the layout index to the LLVM struct field index The main user of this information is rustc_trans::adt::struct_llfields which determines the LLVM fields to be used by LLVM, including padding fields.
2017-03-29Merge `ExpnId` and `SyntaxContext`.Jeffrey Seyfried-34/+20
2017-03-14Refactor `Attribute` to use `Path` and `TokenStream` instead of `MetaItem`.Jeffrey Seyfried-4/+6
2017-03-10Refactor out `ast::ItemKind::MacroDef`.Jeffrey Seyfried-1/+1
2017-02-25rustc_typeck: hook up collect and item/body check to on-demand.Eduard-Mihai Burtescu-1/+1
2017-02-12Allow using inert attributes from `proc_macro_derive`s with ↵Jeffrey Seyfried-5/+3
`#![feature(proc_macro)]`.
2017-02-05Move derive macro expansion into the MacroExpanderJosh Driver-244/+9
This removes the expand_derives function, and sprinkles the functionality throughout the Invocation Collector, Expander and Resolver.
2017-02-05Rename CustomDerive to ProcMacroDerive for macros 1.1Josh Driver-11/+11
2017-02-05Make builtin derives a SyntaxExtensionJosh Driver-21/+23
This allows builtin derives to be registered and resolved, just like other derive types.
2017-01-20Rollup merge of #38842 - abonander:proc_macro_attribute, r=jseyfriedAlex Crichton-2/+15
Implement `#[proc_macro_attribute]` This implements `#[proc_macro_attribute]` as described in https://github.com/rust-lang/rfcs/pull/1566 The following major (hopefully non-breaking) changes are included: * Refactor `proc_macro::TokenStream` to use `syntax::tokenstream::TokenStream`. * `proc_macro::tokenstream::TokenStream` no longer emits newlines between items, this can be trivially restored if desired * `proc_macro::TokenStream::from_str` does not try to parse an item anymore, moved to `impl MultiItemModifier for CustomDerive` with more informative error message * Implement `#[proc_macro_attribute]`, which expects functions of the kind `fn(TokenStream, TokenStream) -> TokenStream` * Reactivated `#![feature(proc_macro)]` and gated `#[proc_macro_attribute]` under it * `#![feature(proc_macro)]` and `#![feature(custom_attribute)]` are mutually exclusive * adding `#![feature(proc_macro)]` makes the expansion pass assume that any attributes that are not built-in, or introduced by existing syntax extensions, are proc-macro attributes * Fix `feature_gate::find_lang_feature_issue()` to not use `unwrap()` * This change wasn't necessary for this PR, but it helped debugging a problem where I was using the wrong feature string. * Move "completed feature gate checking" pass to after "name resolution" pass * This was necessary for proper feature-gating of `#[proc_macro_attribute]` invocations when the `proc_macro` feature flag isn't set. Prototype/Litmus Test: [Implementation](https://github.com/abonander/anterofit/blob/proc_macro/service-attr/src/lib.rs#L13) -- [Usage](https://github.com/abonander/anterofit/blob/proc_macro/service-attr/examples/post_service.rs#L35)
2017-01-17Use resizable Vec instead of P<[T]> in ASTVadim Petrochenkov-6/+5
2017-01-16AST/HIR: Replace Path with Type in WhereEqPredicateVadim Petrochenkov-2/+2
2017-01-15Refactor `proc_macro::TokenStream` to use ↵Austin Bonander-2/+15
`syntax::tokenstream::TokenStream`; fix tests for changed semantics
2017-01-12Auto merge of #38814 - Ralith:cfg-fields, r=jseyfriedbors-0/+1
syntax: enable attributes and cfg on struct fields This enables conditional compilation of field initializers in a struct literal, simplifying construction of structs whose fields are themselves conditionally present. For example, the intializer for the constant in the following becomes legal, and has the intuitive effect: ```rust struct Foo { #[cfg(unix)] bar: (), } const FOO: Foo = Foo { #[cfg(unix)] bar: (), }; ``` It's not clear to me whether this calls for the full RFC process, but the implementation was simple enough that I figured I'd begin the conversation with code.
2017-01-11syntax: struct field attributes and cfgBenjamin Saunders-0/+1
2017-01-10Give custom derive spans an expansion IDNick Cameron-7/+20
2017-01-02rustc: Stabilize the `proc_macro` featureAlex Crichton-7/+1
This commit stabilizes the `proc_macro` and `proc_macro_lib` features in the compiler to stabilize the "Macros 1.1" feature of the language. Many more details can be found on the tracking issue, #35900. Closes #35900
2016-12-31Auto merge of #38482 - est31:i128, r=eddybbors-0/+2
i128 and u128 support Brings i128 and u128 support to nightly rust, behind a feature flag. The goal of this PR is to do the bulk of the work for 128 bit integer support. Smaller but just as tricky features needed for stabilisation like 128 bit enum discriminants are left for future PRs. Rebased version of #37900, which in turn was a rebase + improvement of #35954 . Sadly I couldn't reopen #37900 due to github. There goes my premium position in the homu queue... [plugin-breaking-change] cc #35118 (tracking issue)
2016-12-31Style fixesJosh Driver-2/+1
2016-12-31Stop macro calls in structs for proc_macro_derive from panicingJosh Driver-1/+4
2016-12-30Fix rebase falloutSimonas Kazlauskas-0/+1
This commit includes manual merge conflict resolution changes from a rebase by @est31.
2016-12-30Such large. Very 128. Much bits.Simonas Kazlauskas-1/+2
This commit introduces 128-bit integers. Stage 2 builds and produces a working compiler which understands and supports 128-bit integers throughout. The general strategy used is to have rustc_i128 module which provides aliases for iu128, equal to iu64 in stage9 and iu128 later. Since nowhere in rustc we rely on large numbers being supported, this strategy is good enough to get past the first bootstrap stages to end up with a fully working 128-bit capable compiler. In order for this strategy to work, number of locations had to be changed to use associated max_value/min_value instead of MAX/MIN constants as well as the min_value (or was it max_value?) had to be changed to use xor instead of shift so both 64-bit and 128-bit based consteval works (former not necessarily producing the right results in stage1). This commit includes manual merge conflict resolution changes from a rebase by @est31.
2016-12-23Auto merge of #38533 - jseyfried:legacy_custom_derive_deprecation, r=nrcbors-1/+3
Allow legacy custom derive authors to disable warnings in downstream crates This PR allows legacy custom derive authors to use a pre-deprecated method `registry.register_custom_derive()` instead of `registry.register_syntax_extension()` to avoid downstream deprecation warnings. r? @nrc
2016-12-23Allow legacy custom derive authors to disable warnings in downstream crates.Jeffrey Seyfried-1/+3
2016-12-22Refactor how global paths are represented (for both ast and hir).Jeffrey Seyfried-7/+4
2016-12-06annotate stricter lifetimes on LateLintPass methods to allow them to forward ↵Oliver Schneider-4/+3
to a Visitor
2016-11-21Use `Symbol` instead of `InternedString` in the AST, HIR, and various other ↵Jeffrey Seyfried-18/+15
places.
2016-11-20Move `syntax::util::interner` -> `syntax::symbol`, cleanup.Jeffrey Seyfried-46/+42
2016-11-20Refactor `P<ast::MetaItem>` -> `ast::MetaItem`.Jeffrey Seyfried-1/+1
2016-11-20Refactor `MetaItemKind` to use `Name`s instead of `InternedString`s.Jeffrey Seyfried-59/+52
2016-11-20Refactor away `ast::Attribute_`.Jeffrey Seyfried-1/+1
2016-11-10Auto merge of #37645 - jseyfried:fix_crate_var_in_custom_derives, r=nrcbors-1/+1
Fix regression involving custom derives on items with `$crate` The regression was introduced in #37213. I believe we cannot make the improvements from #37213 work with the current custom derive setup (c.f. https://github.com/rust-lang/rust/issues/37637#issuecomment-258959145) -- we'll have to wait for `TokenStream`'s API to improve. Fixes #37637. r? @nrc
2016-11-10Support `#[macro_reexport]`ing custom derives.Jeffrey Seyfried-2/+8
2016-11-10Elimite `$crate` before invokng custom derives.Jeffrey Seyfried-1/+1
2016-11-10syntax: don't fake a block around closures' bodies during parsing.Eduard Burtescu-6/+6
2016-11-08Revert "Point macros 1.1 errors to the input item"Josh Driver-17/+3
This reverts commit 3784067edcbcd0614f6c4c88f6445ca17ae27ff6. Any errors in the derived output now point at the derive attribute instead of the item.
2016-11-08Allow proc_macro functions to whitelist specific attributesJosh Driver-11/+33
By using a second attribute `attributes(Bar)` on proc_macro_derive, whitelist any attributes with the name `Bar` in the deriving item. This allows a proc_macro function to use custom attribtues without a custom attribute error or unused attribute lint.
2016-10-31Changed most vec! invocations to use square bracesiirelu-15/+15
Most of the Rust community agrees that the vec! macro is clearer when called using square brackets [] instead of regular brackets (). Most of these ocurrences are from before macros allowed using different types of brackets. There is one left unchanged in a pretty-print test, as the pretty printer still wants it to have regular brackets.
2016-10-29Fix more spans in deriving::genericNick Cameron-2/+3
2016-10-28Give variant spans used in derives the correct expansion idNick Cameron-1/+2
This fixes a problem in save-analysis where it mistakes a path to a variant as the variant itself.
2016-10-27deprecation message for custom deriveNick Cameron-1/+1
2016-10-27Deprecate custom_deriveNick Cameron-0/+1
Has a custom deprecation since deprecating features is not supported and is a pain to implement
2016-10-15Use the macro namespace for custom derives.Jeffrey Seyfried-7/+17
2016-10-10Expand `#[derive]` attribute macro invocations last.Jeffrey Seyfried-5/+30
2016-10-08Rollup merge of #37034 - nox:empty-trait-list, r=alexcrichtonManish Goregaokar-4/+6
Do not add an empty #[derive()] list in expand_derive (fixes #37033)
2016-10-08Do not add an empty #[derive()] list in expand_derive (fixes #37033)Anthony Ramine-4/+6
2016-10-06rustc: Rename rustc_macro to proc_macroAlex Crichton-1/+1
This commit blanket renames the `rustc_macro` infrastructure to `proc_macro`, which reflects the general consensus of #35900. A follow up PR to Cargo will be required to purge the `rustc-macro` name as well.
2016-10-01Rollup merge of #34764 - pnkfelix:attrs-on-generic-formals, r=eddybManish Goregaokar-4/+5
First step for #34761
2016-09-27rustc: Tweak expansion order of custom deriveAlex Crichton-94/+122
This commit alters the expansion order of custom macros-1.1 style `#[derive]` modes. Instead of left-to-right the expansion now happens in three categories, each of which is internally left-to-right: * Old-style custom derive (`#[derive_Foo]`) is expanded * New-style custom derive (macros 1.1) is expanded * Built in derive modes are expanded This gives built in derive modes maximal knowledge about the struct that's being expanded and also avoids pesky issues like exposing `#[structural_match]` or `#[rustc_copy_clone_marker]`. cc #35900
2016-09-26make emit_feature_err take a ParseSessTim Neumann-1/+1
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