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