src/librustc_builtin_macros/lib.rs

   1 //! This crate contains implementations of built-in macros and other code generating facilities
   2 //! injecting code into the crate before it is lowered to HIR.
   3
   4 #![doc(html_root_url = "https://doc.rust-lang.org/nightly/")]
   5 #![feature(bool_to_option)]
   6 #![feature(crate_visibility_modifier)]
   7 #![feature(decl_macro)]
   8 #![feature(nll)]
   9 #![feature(or_patterns)]
  10 #![feature(proc_macro_internals)]
  11 #![feature(proc_macro_quote)]
  12
  13 extern crate proc_macro;
  14
  15 use crate::deriving::*;
  16
  17 use rustc_expand::base::{MacroExpanderFn, ResolverExpand, SyntaxExtension, SyntaxExtensionKind};
  18 use rustc_expand::proc_macro::BangProcMacro;
  19 use rustc_span::edition::Edition;
  20 use rustc_span::symbol::{sym, Ident};
  21
  22 mod asm;
  23 mod assert;
  24 mod cfg;
  25 mod cfg_accessible;
  26 mod compile_error;
  27 mod concat;
  28 mod concat_idents;
  29 mod deriving;
  30 mod env;
  31 mod format;
  32 mod format_foreign;
  33 mod global_allocator;
  34 mod global_asm;
  35 mod llvm_asm;
  36 mod log_syntax;
  37 mod source_util;
  38 mod test;
  39 mod trace_macros;
  40 mod util;
  41
  42 pub mod cmdline_attrs;
  43 pub mod proc_macro_harness;
  44 pub mod standard_library_imports;
  45 pub mod test_harness;
  46
  47 pub fn register_builtin_macros(resolver: &mut dyn ResolverExpand, edition: Edition) {
  48     let mut register = |name, kind| {
  49         resolver.register_builtin_macro(
  50             Ident::with_dummy_span(name),
  51             SyntaxExtension { is_builtin: true, ..SyntaxExtension::default(kind, edition) },
  52         )
  53     };
  54     macro register_bang($($name:ident: $f:expr,)*) {
  55         $(register(sym::$name, SyntaxExtensionKind::LegacyBang(Box::new($f as MacroExpanderFn)));)*
  56     }
  57     macro register_attr($($name:ident: $f:expr,)*) {
  58         $(register(sym::$name, SyntaxExtensionKind::LegacyAttr(Box::new($f)));)*
  59     }
  60     macro register_derive($($name:ident: $f:expr,)*) {
  61         $(register(sym::$name, SyntaxExtensionKind::LegacyDerive(Box::new(BuiltinDerive($f))));)*
  62     }
  63
  64     register_bang! {
  65         asm: asm::expand_asm,
  66         assert: assert::expand_assert,
  67         cfg: cfg::expand_cfg,
  68         column: source_util::expand_column,
  69         compile_error: compile_error::expand_compile_error,
  70         concat_idents: concat_idents::expand_concat_idents,
  71         concat: concat::expand_concat,
  72         env: env::expand_env,
  73         file: source_util::expand_file,
  74         format_args_nl: format::expand_format_args_nl,
  75         format_args: format::expand_format_args,
  76         global_asm: global_asm::expand_global_asm,
  77         include_bytes: source_util::expand_include_bytes,
  78         include_str: source_util::expand_include_str,
  79         include: source_util::expand_include,
  80         line: source_util::expand_line,
  81         llvm_asm: llvm_asm::expand_llvm_asm,
  82         log_syntax: log_syntax::expand_log_syntax,
  83         module_path: source_util::expand_mod,
  84         option_env: env::expand_option_env,
  85         stringify: source_util::expand_stringify,
  86         trace_macros: trace_macros::expand_trace_macros,
  87     }
  88
  89     register_attr! {
  90         bench: test::expand_bench,
  91         cfg_accessible: cfg_accessible::Expander,
  92         global_allocator: global_allocator::expand,
  93         test: test::expand_test,
  94         test_case: test::expand_test_case,
  95     }
  96
  97     register_derive! {
  98         Clone: clone::expand_deriving_clone,
  99         Copy: bounds::expand_deriving_copy,
 100         Debug: debug::expand_deriving_debug,
 101         Default: default::expand_deriving_default,
 102         Eq: eq::expand_deriving_eq,
 103         Hash: hash::expand_deriving_hash,
 104         Ord: ord::expand_deriving_ord,
 105         PartialEq: partial_eq::expand_deriving_partial_eq,
 106         PartialOrd: partial_ord::expand_deriving_partial_ord,
 107         RustcDecodable: decodable::expand_deriving_rustc_decodable,
 108         RustcEncodable: encodable::expand_deriving_rustc_encodable,
 109     }
 110
 111     let client = proc_macro::bridge::client::Client::expand1(proc_macro::quote);
 112     register(sym::quote, SyntaxExtensionKind::Bang(Box::new(BangProcMacro { client })));
 113 }