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