1 // Copyright 2015 The Rust Project Developers. See the COPYRIGHT
2 // file at the top-level directory of this distribution and at
3 // http://rust-lang.org/COPYRIGHT.
5 // Licensed under the Apache License, Version 2.0 <LICENSE-APACHE or
6 // http://www.apache.org/licenses/LICENSE-2.0> or the MIT license
7 // <LICENSE-MIT or http://opensource.org/licenses/MIT>, at your
8 // option. This file may not be copied, modified, or distributed
9 // except according to those terms.
11 //! Syntax extensions in the Rust compiler.
13 #![doc(html_logo_url = "https://www.rust-lang.org/logos/rust-logo-128x128-blk-v2.png",
14 html_favicon_url = "https://doc.rust-lang.org/favicon.ico",
15 html_root_url = "https://doc.rust-lang.org/nightly/")]
18 #![feature(proc_macro_internals)]
20 extern crate fmt_macros;
23 extern crate syntax_pos;
24 extern crate proc_macro;
25 extern crate rustc_errors as errors;
39 pub mod proc_macro_registrar;
44 pub mod proc_macro_impl;
48 use syntax::ext::base::{MacroExpanderFn, NormalTT, NamedSyntaxExtension};
49 use syntax::symbol::Symbol;
51 pub fn register_builtins(resolver: &mut syntax::ext::base::Resolver,
52 user_exts: Vec<NamedSyntaxExtension>,
53 enable_quotes: bool) {
54 deriving::register_builtin_derives(resolver);
56 let mut register = |name, ext| {
57 resolver.add_builtin(ast::Ident::with_empty_ctxt(name), Rc::new(ext));
60 macro_rules! register {
61 ($( $name:ident: $f:expr, )*) => { $(
62 register(Symbol::intern(stringify!($name)),
64 expander: Box::new($f as MacroExpanderFn),
66 allow_internal_unstable: false,
67 allow_internal_unsafe: false,
73 use syntax::ext::quote::*;
75 quote_tokens: expand_quote_tokens,
76 quote_expr: expand_quote_expr,
77 quote_ty: expand_quote_ty,
78 quote_item: expand_quote_item,
79 quote_pat: expand_quote_pat,
80 quote_arm: expand_quote_arm,
81 quote_stmt: expand_quote_stmt,
82 quote_attr: expand_quote_attr,
83 quote_arg: expand_quote_arg,
84 quote_block: expand_quote_block,
85 quote_meta_item: expand_quote_meta_item,
86 quote_path: expand_quote_path,
90 use syntax::ext::source_util::*;
93 __rust_unstable_column: expand_column_gated,
94 column: expand_column,
96 stringify: expand_stringify,
97 include: expand_include,
98 include_str: expand_include_str,
99 include_bytes: expand_include_bytes,
100 module_path: expand_mod,
102 asm: asm::expand_asm,
103 global_asm: global_asm::expand_global_asm,
104 cfg: cfg::expand_cfg,
105 concat: concat::expand_syntax_ext,
106 concat_idents: concat_idents::expand_syntax_ext,
107 env: env::expand_env,
108 option_env: env::expand_option_env,
109 log_syntax: log_syntax::expand_syntax_ext,
110 trace_macros: trace_macros::expand_trace_macros,
111 compile_error: compile_error::expand_compile_error,
114 // format_args uses `unstable` things internally.
115 register(Symbol::intern("format_args"),
117 expander: Box::new(format::expand_format_args),
119 allow_internal_unstable: true,
120 allow_internal_unsafe: false,
123 for (name, ext) in user_exts {