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 #![allow(rustc::potential_query_instability)]
   5 #![doc(html_root_url = "https://doc.rust-lang.org/nightly/nightly-rustc/")]
   6 #![feature(array_windows)]
   7 #![feature(box_patterns)]
   8 #![feature(decl_macro)]
   9 #![feature(if_let_guard)]
  10 #![feature(is_sorted)]
  11 #![feature(let_chains)]
  12 #![feature(proc_macro_internals)]
  13 #![feature(proc_macro_quote)]
  14 #![recursion_limit = "256"]
  15
  16 extern crate proc_macro;
  17
  18 #[macro_use]
  19 extern crate tracing;
  20
  21 use crate::deriving::*;
  22
  23 use rustc_expand::base::{MacroExpanderFn, ResolverExpand, SyntaxExtensionKind};
  24 use rustc_expand::proc_macro::BangProcMacro;
  25 use rustc_span::symbol::sym;
  26
  27 mod assert;
  28 mod cfg;
  29 mod cfg_accessible;
  30 mod cfg_eval;
  31 mod compile_error;
  32 mod concat;
  33 mod concat_bytes;
  34 mod concat_idents;
  35 mod derive;
  36 mod deriving;
  37 mod edition_panic;
  38 mod env;
  39 mod format;
  40 mod format_foreign;
  41 mod global_allocator;
  42 mod log_syntax;
  43 mod source_util;
  44 mod test;
  45 mod trace_macros;
  46 mod util;
  47
  48 pub mod asm;
  49 pub mod cmdline_attrs;
  50 pub mod proc_macro_harness;
  51 pub mod standard_library_imports;
  52 pub mod test_harness;
  53
  54 pub fn register_builtin_macros(resolver: &mut dyn ResolverExpand) {
  55     let mut register = |name, kind| resolver.register_builtin_macro(name, kind);
  56     macro register_bang($($name:ident: $f:expr,)*) {
  57         $(register(sym::$name, SyntaxExtensionKind::LegacyBang(Box::new($f as MacroExpanderFn)));)*
  58     }
  59     macro register_attr($($name:ident: $f:expr,)*) {
  60         $(register(sym::$name, SyntaxExtensionKind::LegacyAttr(Box::new($f)));)*
  61     }
  62     macro register_derive($($name:ident: $f:expr,)*) {
  63         $(register(sym::$name, SyntaxExtensionKind::LegacyDerive(Box::new(BuiltinDerive($f))));)*
  64     }
  65
  66     register_bang! {
  67         asm: asm::expand_asm,
  68         assert: assert::expand_assert,
  69         cfg: cfg::expand_cfg,
  70         column: source_util::expand_column,
  71         compile_error: compile_error::expand_compile_error,
  72         concat_bytes: concat_bytes::expand_concat_bytes,
  73         concat_idents: concat_idents::expand_concat_idents,
  74         concat: concat::expand_concat,
  75         env: env::expand_env,
  76         file: source_util::expand_file,
  77         format_args_nl: format::expand_format_args_nl,
  78         format_args: format::expand_format_args,
  79         const_format_args: format::expand_format_args,
  80         global_asm: 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_log_syntax,
  86         module_path: source_util::expand_mod,
  87         option_env: env::expand_option_env,
  88         core_panic: edition_panic::expand_panic,
  89         std_panic: edition_panic::expand_panic,
  90         unreachable: edition_panic::expand_unreachable,
  91         stringify: source_util::expand_stringify,
  92         trace_macros: trace_macros::expand_trace_macros,
  93     }
  94
  95     register_attr! {
  96         bench: test::expand_bench,
  97         cfg_accessible: cfg_accessible::Expander,
  98         cfg_eval: cfg_eval::expand,
  99         derive: derive::Expander,
 100         global_allocator: global_allocator::expand,
 101         test: test::expand_test,
 102         test_case: test::expand_test_case,
 103     }
 104
 105     register_derive! {
 106         Clone: clone::expand_deriving_clone,
 107         Copy: bounds::expand_deriving_copy,
 108         Debug: debug::expand_deriving_debug,
 109         Default: default::expand_deriving_default,
 110         Eq: eq::expand_deriving_eq,
 111         Hash: hash::expand_deriving_hash,
 112         Ord: ord::expand_deriving_ord,
 113         PartialEq: partial_eq::expand_deriving_partial_eq,
 114         PartialOrd: partial_ord::expand_deriving_partial_ord,
 115         RustcDecodable: decodable::expand_deriving_rustc_decodable,
 116         RustcEncodable: encodable::expand_deriving_rustc_encodable,
 117     }
 118
 119     let client = proc_macro::bridge::client::Client::expand1(proc_macro::quote);
 120     register(sym::quote, SyntaxExtensionKind::Bang(Box::new(BangProcMacro { client })));
 121 }