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(inner_deref)]
   9 #![feature(nll)]
  10 #![feature(or_patterns)]
  11 #![feature(proc_macro_internals)]
  12 #![feature(proc_macro_quote)]
  13
  14 extern crate proc_macro;
  15
  16 use crate::deriving::*;
  17
  18 use rustc_expand::base::{MacroExpanderFn, ResolverExpand, SyntaxExtension, SyntaxExtensionKind};
  19 use rustc_expand::proc_macro::BangProcMacro;
  20 use rustc_span::edition::Edition;
  21 use rustc_span::symbol::{sym, Ident};
  22
  23 mod asm;
  24 mod assert;
  25 mod cfg;
  26 mod cfg_accessible;
  27 mod compile_error;
  28 mod concat;
  29 mod concat_idents;
  30 mod deriving;
  31 mod env;
  32 mod format;
  33 mod format_foreign;
  34 mod global_allocator;
  35 mod global_asm;
  36 mod llvm_asm;
  37 mod log_syntax;
  38 mod source_util;
  39 mod test;
  40 mod trace_macros;
  41 mod util;
  42
  43 pub mod cmdline_attrs;
  44 pub mod proc_macro_harness;
  45 pub mod standard_library_imports;
  46 pub mod test_harness;
  47
  48 pub fn register_builtin_macros(resolver: &mut dyn ResolverExpand, edition: Edition) {
  49     let mut register = |name, kind| {
  50         resolver.register_builtin_macro(
  51             Ident::with_dummy_span(name),
  52             SyntaxExtension { is_builtin: true, ..SyntaxExtension::default(kind, edition) },
  53         )
  54     };
  55     macro register_bang($($name:ident: $f:expr,)*) {
  56         $(register(sym::$name, SyntaxExtensionKind::LegacyBang(Box::new($f as MacroExpanderFn)));)*
  57     }
  58     macro register_attr($($name:ident: $f:expr,)*) {
  59         $(register(sym::$name, SyntaxExtensionKind::LegacyAttr(Box::new($f)));)*
  60     }
  61     macro register_derive($($name:ident: $f:expr,)*) {
  62         $(register(sym::$name, SyntaxExtensionKind::LegacyDerive(Box::new(BuiltinDerive($f))));)*
  63     }
  64
  65     register_bang! {
  66         asm: asm::expand_asm,
  67         assert: assert::expand_assert,
  68         cfg: cfg::expand_cfg,
  69         column: source_util::expand_column,
  70         compile_error: compile_error::expand_compile_error,
  71         concat_idents: concat_idents::expand_concat_idents,
  72         concat: concat::expand_concat,
  73         env: env::expand_env,
  74         file: source_util::expand_file,
  75         format_args_nl: format::expand_format_args_nl,
  76         format_args: format::expand_format_args,
  77         global_asm: global_asm::expand_global_asm,
  78         include_bytes: source_util::expand_include_bytes,
  79         include_str: source_util::expand_include_str,
  80         include: source_util::expand_include,
  81         line: source_util::expand_line,
  82         llvm_asm: llvm_asm::expand_llvm_asm,
  83         log_syntax: log_syntax::expand_log_syntax,
  84         module_path: source_util::expand_mod,
  85         option_env: env::expand_option_env,
  86         stringify: source_util::expand_stringify,
  87         trace_macros: trace_macros::expand_trace_macros,
  88     }
  89
  90     register_attr! {
  91         bench: test::expand_bench,
  92         cfg_accessible: cfg_accessible::Expander,
  93         global_allocator: global_allocator::expand,
  94         test: test::expand_test,
  95         test_case: test::expand_test_case,
  96     }
  97
  98     register_derive! {
  99         Clone: clone::expand_deriving_clone,
 100         Copy: bounds::expand_deriving_copy,
 101         Debug: debug::expand_deriving_debug,
 102         Default: default::expand_deriving_default,
 103         Eq: eq::expand_deriving_eq,
 104         Hash: hash::expand_deriving_hash,
 105         Ord: ord::expand_deriving_ord,
 106         PartialEq: partial_eq::expand_deriving_partial_eq,
 107         PartialOrd: partial_ord::expand_deriving_partial_ord,
 108         RustcDecodable: decodable::expand_deriving_rustc_decodable,
 109         RustcEncodable: encodable::expand_deriving_rustc_encodable,
 110     }
 111
 112     let client = proc_macro::bridge::client::Client::expand1(proc_macro::quote);
 113     register(sym::quote, SyntaxExtensionKind::Bang(Box::new(BangProcMacro { client })));
 114 }