src/libsyntax_ext/lib.rs

   1 //! Syntax extensions in the Rust compiler.
   2
   3 #![doc(html_root_url = "https://doc.rust-lang.org/nightly/")]
   4
   5 #![deny(rust_2018_idioms)]
   6 #![deny(unused_lifetimes)]
   7
   8 #![feature(crate_visibility_modifier)]
   9 #![feature(decl_macro)]
  10 #![feature(nll)]
  11 #![feature(proc_macro_diagnostic)]
  12 #![feature(proc_macro_internals)]
  13 #![feature(proc_macro_span)]
  14 #![feature(rustc_diagnostic_macros)]
  15 #![feature(unicode_internals)]
  16
  17 extern crate proc_macro;
  18
  19 use crate::deriving::*;
  20
  21 use syntax::ast::Ident;
  22 use syntax::edition::Edition;
  23 use syntax::ext::base::{SyntaxExtension, SyntaxExtensionKind, MacroExpanderFn};
  24 use syntax::ext::source_util;
  25 use syntax::symbol::sym;
  26
  27 mod error_codes;
  28
  29 mod asm;
  30 mod assert;
  31 mod cfg;
  32 mod compile_error;
  33 mod concat;
  34 mod concat_idents;
  35 mod env;
  36 mod format;
  37 mod format_foreign;
  38 mod global_allocator;
  39 mod global_asm;
  40 mod log_syntax;
  41 mod proc_macro_server;
  42 mod test;
  43 mod test_case;
  44 mod trace_macros;
  45
  46 pub mod deriving;
  47 pub mod plugin_macro_defs;
  48 pub mod proc_macro_decls;
  49 pub mod proc_macro_impl;
  50
  51 pub fn register_builtin_macros(resolver: &mut dyn syntax::ext::base::Resolver, edition: Edition) {
  52     let mut register = |name, kind| resolver.register_builtin_macro(
  53         Ident::with_empty_ctxt(name), SyntaxExtension {
  54             is_builtin: true, ..SyntaxExtension::default(kind, edition)
  55         },
  56     );
  57     macro register_bang($($name:ident: $f:expr,)*) {
  58         $(register(sym::$name, SyntaxExtensionKind::LegacyBang(Box::new($f as MacroExpanderFn)));)*
  59     }
  60     macro register_attr($($name:ident: $f:expr,)*) {
  61         $(register(sym::$name, SyntaxExtensionKind::LegacyAttr(Box::new($f)));)*
  62     }
  63     macro register_derive($($name:ident: $f:expr,)*) {
  64         $(register(sym::$name, SyntaxExtensionKind::LegacyDerive(Box::new(BuiltinDerive($f))));)*
  65     }
  66
  67     register_bang! {
  68         __rust_unstable_column: source_util::expand_column,
  69         asm: asm::expand_asm,
  70         assert: assert::expand_assert,
  71         cfg: cfg::expand_cfg,
  72         column: source_util::expand_column,
  73         compile_error: compile_error::expand_compile_error,
  74         concat_idents: concat_idents::expand_syntax_ext,
  75         concat: concat::expand_syntax_ext,
  76         env: env::expand_env,
  77         file: source_util::expand_file,
  78         format_args_nl: format::expand_format_args_nl,
  79         format_args: format::expand_format_args,
  80         global_asm: global_asm::expand_global_asm,
  81         include_bytes: source_util::expand_include_bytes,
  82         include_str: source_util::expand_include_str,
  83         include: source_util::expand_include,
  84         line: source_util::expand_line,
  85         log_syntax: log_syntax::expand_syntax_ext,
  86         module_path: source_util::expand_mod,
  87         option_env: env::expand_option_env,
  88         stringify: source_util::expand_stringify,
  89         trace_macros: trace_macros::expand_trace_macros,
  90     }
  91
  92     register_attr! {
  93         bench: test::expand_bench,
  94         global_allocator: global_allocator::expand,
  95         test: test::expand_test,
  96         test_case: test_case::expand,
  97     }
  98
  99     register_derive! {
 100         Clone: clone::expand_deriving_clone,
 101         Copy: bounds::expand_deriving_copy,
 102         Debug: debug::expand_deriving_debug,
 103         Decodable: decodable::expand_deriving_decodable,
 104         Default: default::expand_deriving_default,
 105         Encodable: encodable::expand_deriving_encodable,
 106         Eq: eq::expand_deriving_eq,
 107         Hash: hash::expand_deriving_hash,
 108         Ord: ord::expand_deriving_ord,
 109         PartialEq: partial_eq::expand_deriving_partial_eq,
 110         PartialOrd: partial_ord::expand_deriving_partial_ord,
 111         RustcDecodable: decodable::expand_deriving_rustc_decodable,
 112         RustcEncodable: encodable::expand_deriving_rustc_encodable,
 113     }
 114 }