compiler/rustc_builtin_macros/src/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/nightly-rustc/")]
   5 #![feature(array_windows)]
   6 #![feature(box_patterns)]
   7 #![feature(bool_to_option)]
   8 #![feature(crate_visibility_modifier)]
   9 #![feature(decl_macro)]
  10 #![feature(is_sorted)]
  11 #![feature(nll)]
  12 #![feature(let_else)]
  13 #![feature(proc_macro_internals)]
  14 #![feature(proc_macro_quote)]
  15 #![recursion_limit = "256"]
  16 #![cfg_attr(not(bootstrap), allow(rustc::potential_query_instability))]
  17
  18 extern crate proc_macro;
  19
  20 use crate::deriving::*;
  21
  22 use rustc_expand::base::{MacroExpanderFn, ResolverExpand, SyntaxExtensionKind};
  23 use rustc_expand::proc_macro::BangProcMacro;
  24 use rustc_span::symbol::sym;
  25
  26 mod assert;
  27 mod cfg;
  28 mod cfg_accessible;
  29 mod cfg_eval;
  30 mod compile_error;
  31 mod concat;
  32 mod concat_bytes;
  33 mod concat_idents;
  34 mod derive;
  35 mod deriving;
  36 mod edition_panic;
  37 mod env;
  38 mod format;
  39 mod format_foreign;
  40 mod global_allocator;
  41 mod log_syntax;
  42 mod source_util;
  43 mod test;
  44 mod trace_macros;
  45 mod util;
  46
  47 pub mod asm;
  48 pub mod cmdline_attrs;
  49 pub mod proc_macro_harness;
  50 pub mod standard_library_imports;
  51 pub mod test_harness;
  52
  53 pub fn register_builtin_macros(resolver: &mut dyn ResolverExpand) {
  54     let mut register = |name, kind| resolver.register_builtin_macro(name, kind);
  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_bytes: concat_bytes::expand_concat_bytes,
  72         concat_idents: concat_idents::expand_concat_idents,
  73         concat: concat::expand_concat,
  74         env: env::expand_env,
  75         file: source_util::expand_file,
  76         format_args_nl: format::expand_format_args_nl,
  77         format_args: format::expand_format_args,
  78         const_format_args: format::expand_format_args,
  79         global_asm: asm::expand_global_asm,
  80         include_bytes: source_util::expand_include_bytes,
  81         include_str: source_util::expand_include_str,
  82         include: source_util::expand_include,
  83         line: source_util::expand_line,
  84         log_syntax: log_syntax::expand_log_syntax,
  85         module_path: source_util::expand_mod,
  86         option_env: env::expand_option_env,
  87         core_panic: edition_panic::expand_panic,
  88         std_panic: edition_panic::expand_panic,
  89         unreachable: edition_panic::expand_unreachable,
  90         stringify: source_util::expand_stringify,
  91         trace_macros: trace_macros::expand_trace_macros,
  92     }
  93
  94     register_attr! {
  95         bench: test::expand_bench,
  96         cfg_accessible: cfg_accessible::Expander,
  97         cfg_eval: cfg_eval::expand,
  98         derive: derive::Expander,
  99         global_allocator: global_allocator::expand,
 100         test: test::expand_test,
 101         test_case: test::expand_test_case,
 102     }
 103
 104     register_derive! {
 105         Clone: clone::expand_deriving_clone,
 106         Copy: bounds::expand_deriving_copy,
 107         Debug: debug::expand_deriving_debug,
 108         Default: default::expand_deriving_default,
 109         Eq: eq::expand_deriving_eq,
 110         Hash: hash::expand_deriving_hash,
 111         Ord: ord::expand_deriving_ord,
 112         PartialEq: partial_eq::expand_deriving_partial_eq,
 113         PartialOrd: partial_ord::expand_deriving_partial_ord,
 114         RustcDecodable: decodable::expand_deriving_rustc_decodable,
 115         RustcEncodable: encodable::expand_deriving_rustc_encodable,
 116     }
 117
 118     let client = proc_macro::bridge::client::Client::expand1(proc_macro::quote);
 119     register(sym::quote, SyntaxExtensionKind::Bang(Box::new(BangProcMacro { client })));
 120 }