src/libsyntax_ext/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
   6 #![feature(crate_visibility_modifier)]
   7 #![feature(decl_macro)]
   8 #![feature(mem_take)]
   9 #![feature(nll)]
  10 #![feature(proc_macro_internals)]
  11 #![feature(proc_macro_quote)]
  12
  13 extern crate proc_macro;
  14
  15 use crate::deriving::*;
  16
  17 use syntax::ast::Ident;
  18 use syntax::edition::Edition;
  19 use syntax::ext::base::{SyntaxExtension, SyntaxExtensionKind, MacroExpanderFn};
  20 use syntax::ext::proc_macro::BangProcMacro;
  21 use syntax::symbol::sym;
  22
  23 mod error_codes;
  24
  25 mod asm;
  26 mod assert;
  27 mod cfg;
  28 mod compile_error;
  29 mod concat;
  30 mod concat_idents;
  31 mod deriving;
  32 mod env;
  33 mod format;
  34 mod format_foreign;
  35 mod global_allocator;
  36 mod global_asm;
  37 mod log_syntax;
  38 mod source_util;
  39 mod test;
  40 mod trace_macros;
  41
  42 pub mod cmdline_attrs;
  43 pub mod plugin_macro_defs;
  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 syntax::ext::base::Resolver, edition: Edition) {
  49     let mut register = |name, kind| resolver.register_builtin_macro(
  50         Ident::with_dummy_span(name), SyntaxExtension {
  51             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         log_syntax: log_syntax::expand_log_syntax,
  82         module_path: source_util::expand_mod,
  83         option_env: env::expand_option_env,
  84         stringify: source_util::expand_stringify,
  85         trace_macros: trace_macros::expand_trace_macros,
  86     }
  87
  88     register_attr! {
  89         bench: test::expand_bench,
  90         global_allocator: global_allocator::expand,
  91         test: test::expand_test,
  92         test_case: test::expand_test_case,
  93     }
  94
  95     register_derive! {
  96         Clone: clone::expand_deriving_clone,
  97         Copy: bounds::expand_deriving_copy,
  98         Debug: debug::expand_deriving_debug,
  99         Default: default::expand_deriving_default,
 100         Eq: eq::expand_deriving_eq,
 101         Hash: hash::expand_deriving_hash,
 102         Ord: ord::expand_deriving_ord,
 103         PartialEq: partial_eq::expand_deriving_partial_eq,
 104         PartialOrd: partial_ord::expand_deriving_partial_ord,
 105         RustcDecodable: decodable::expand_deriving_rustc_decodable,
 106         RustcEncodable: encodable::expand_deriving_rustc_encodable,
 107     }
 108
 109     let client = proc_macro::bridge::client::Client::expand1(proc_macro::quote);
 110     register(sym::quote, SyntaxExtensionKind::Bang(Box::new(BangProcMacro { client })));
 111 }