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 source_util;
  43 mod test;
  44 mod test_case;
  45 mod trace_macros;
  46
  47 pub mod deriving;
  48 pub mod plugin_macro_defs;
  49 pub mod proc_macro_decls;
  50 pub mod proc_macro_impl;
  51
  52 pub fn register_builtin_macros(resolver: &mut dyn syntax::ext::base::Resolver, edition: Edition) {
  53     let mut register = |name, kind| resolver.register_builtin_macro(
  54         Ident::with_empty_ctxt(name), SyntaxExtension {
  55             is_builtin: true, ..SyntaxExtension::default(kind, edition)
  56         },
  57     );
  58     macro register_bang($($name:ident: $f:expr,)*) {
  59         $(register(sym::$name, SyntaxExtensionKind::LegacyBang(Box::new($f as MacroExpanderFn)));)*
  60     }
  61     macro register_attr($($name:ident: $f:expr,)*) {
  62         $(register(sym::$name, SyntaxExtensionKind::LegacyAttr(Box::new($f)));)*
  63     }
  64     macro register_derive($($name:ident: $f:expr,)*) {
  65         $(register(sym::$name, SyntaxExtensionKind::LegacyDerive(Box::new(BuiltinDerive($f))));)*
  66     }
  67
  68     register_bang! {
  69         __rust_unstable_column: source_util::expand_column,
  70         asm: asm::expand_asm,
  71         assert: assert::expand_assert,
  72         cfg: cfg::expand_cfg,
  73         column: source_util::expand_column,
  74         compile_error: compile_error::expand_compile_error,
  75         concat_idents: concat_idents::expand_syntax_ext,
  76         concat: concat::expand_syntax_ext,
  77         env: env::expand_env,
  78         file: source_util::expand_file,
  79         format_args_nl: format::expand_format_args_nl,
  80         format_args: format::expand_format_args,
  81         global_asm: global_asm::expand_global_asm,
  82         include_bytes: source_util::expand_include_bytes,
  83         include_str: source_util::expand_include_str,
  84         include: source_util::expand_include,
  85         line: source_util::expand_line,
  86         log_syntax: log_syntax::expand_syntax_ext,
  87         module_path: source_util::expand_mod,
  88         option_env: env::expand_option_env,
  89         stringify: source_util::expand_stringify,
  90         trace_macros: trace_macros::expand_trace_macros,
  91     }
  92
  93     register_attr! {
  94         bench: test::expand_bench,
  95         global_allocator: global_allocator::expand,
  96         test: test::expand_test,
  97         test_case: test_case::expand,
  98     }
  99
 100     register_derive! {
 101         Clone: clone::expand_deriving_clone,
 102         Copy: bounds::expand_deriving_copy,
 103         Debug: debug::expand_deriving_debug,
 104         Decodable: decodable::expand_deriving_decodable,
 105         Default: default::expand_deriving_default,
 106         Encodable: encodable::expand_deriving_encodable,
 107         Eq: eq::expand_deriving_eq,
 108         Hash: hash::expand_deriving_hash,
 109         Ord: ord::expand_deriving_ord,
 110         PartialEq: partial_eq::expand_deriving_partial_eq,
 111         PartialOrd: partial_ord::expand_deriving_partial_ord,
 112         RustcDecodable: decodable::expand_deriving_rustc_decodable,
 113         RustcEncodable: encodable::expand_deriving_rustc_encodable,
 114     }
 115 }