src/librustc_metadata/common.rs

   1 // Copyright 2012-2015 The Rust Project Developers. See the COPYRIGHT
   2 // file at the top-level directory of this distribution and at
   3 // http://rust-lang.org/COPYRIGHT.
   4 //
   5 // Licensed under the Apache License, Version 2.0 <LICENSE-APACHE or
   6 // http://www.apache.org/licenses/LICENSE-2.0> or the MIT license
   7 // <LICENSE-MIT or http://opensource.org/licenses/MIT>, at your
   8 // option. This file may not be copied, modified, or distributed
   9 // except according to those terms.
  10
  11 #![allow(non_camel_case_types, non_upper_case_globals)]
  12
  13 pub use self::astencode_tag::*;
  14
  15 // RBML enum definitions and utils shared by the encoder and decoder
  16 //
  17 // 0x00..0x1f: reserved for RBML generic type tags
  18 // 0x20..0xef: free for use, preferred for frequent tags
  19 // 0xf0..0xff: internally used by RBML to encode 0x100..0xfff in two bytes
  20 // 0x100..0xfff: free for use, preferred for infrequent tags
  21
  22 pub const tag_items: usize = 0x100; // top-level only
  23
  24 pub const tag_paths_data_name: usize = 0x20;
  25
  26 pub const tag_def_id: usize = 0x21;
  27
  28 pub const tag_items_data: usize = 0x22;
  29
  30 pub const tag_items_data_item: usize = 0x23;
  31
  32 pub const tag_items_data_item_family: usize = 0x24;
  33
  34 pub const tag_items_data_item_type: usize = 0x25;
  35
  36 pub const tag_items_data_item_symbol: usize = 0x26;
  37
  38 pub const tag_items_data_item_variant: usize = 0x27;
  39
  40 pub const tag_items_data_parent_item: usize = 0x28;
  41
  42 pub const tag_items_data_item_is_tuple_struct_ctor: usize = 0x29;
  43
  44 pub const tag_items_closure_kind: usize = 0x2a;
  45 pub const tag_items_closure_ty: usize = 0x2b;
  46 pub const tag_def_key: usize = 0x2c;
  47
  48 // GAP 0x2d 0x2e
  49
  50 pub const tag_index: usize = 0x110; // top-level only
  51 pub const tag_xref_index: usize = 0x111; // top-level only
  52 pub const tag_xref_data: usize = 0x112; // top-level only
  53
  54 pub const tag_meta_item_name_value: usize = 0x2f;
  55
  56 pub const tag_meta_item_name: usize = 0x30;
  57
  58 pub const tag_meta_item_value: usize = 0x31;
  59
  60 pub const tag_attributes: usize = 0x101; // top-level only
  61
  62 pub const tag_attribute: usize = 0x32;
  63
  64 pub const tag_meta_item_word: usize = 0x33;
  65
  66 pub const tag_meta_item_list: usize = 0x34;
  67
  68 // The list of crates that this crate depends on
  69 pub const tag_crate_deps: usize = 0x102; // top-level only
  70
  71 // A single crate dependency
  72 pub const tag_crate_dep: usize = 0x35;
  73
  74 pub const tag_crate_hash: usize = 0x103; // top-level only
  75 pub const tag_crate_crate_name: usize = 0x104; // top-level only
  76
  77 pub const tag_crate_dep_crate_name: usize = 0x36;
  78 pub const tag_crate_dep_hash: usize = 0x37;
  79 pub const tag_crate_dep_explicitly_linked: usize = 0x38; // top-level only
  80
  81 pub const tag_item_trait_item: usize = 0x3a;
  82
  83 pub const tag_item_trait_ref: usize = 0x3b;
  84
  85 // discriminator value for variants
  86 pub const tag_disr_val: usize = 0x3c;
  87
  88 // used to encode ast_map::PathElem
  89 pub const tag_path: usize = 0x3d;
  90 pub const tag_path_len: usize = 0x3e;
  91 pub const tag_path_elem_mod: usize = 0x3f;
  92 pub const tag_path_elem_name: usize = 0x40;
  93 pub const tag_item_field: usize = 0x41;
  94
  95 pub const tag_item_variances: usize = 0x43;
  96 /*
  97   trait items contain tag_item_trait_item elements,
  98   impl items contain tag_item_impl_item elements, and classes
  99   have both. That's because some code treats classes like traits,
 100   and other code treats them like impls. Because classes can contain
 101   both, tag_item_trait_item and tag_item_impl_item have to be two
 102   different tags.
 103  */
 104 pub const tag_item_impl_item: usize = 0x44;
 105 pub const tag_item_trait_method_explicit_self: usize = 0x45;
 106
 107
 108 // Reexports are found within module tags. Each reexport contains def_ids
 109 // and names.
 110 pub const tag_items_data_item_reexport: usize = 0x46;
 111 pub const tag_items_data_item_reexport_def_id: usize = 0x47;
 112 pub const tag_items_data_item_reexport_name: usize = 0x48;
 113
 114 // used to encode crate_ctxt side tables
 115 enum_from_u32! {
 116     #[derive(Copy, Clone, PartialEq)]
 117     #[repr(usize)]
 118     pub enum astencode_tag { // Reserves 0x50 -- 0x6f
 119         tag_ast = 0x50,
 120
 121         tag_tree = 0x51,
 122
 123         // GAP 0x52
 124         tag_table = 0x53,
 125         // GAP 0x54, 0x55
 126         tag_table_def = 0x56,
 127         tag_table_node_type = 0x57,
 128         tag_table_item_subst = 0x58,
 129         tag_table_freevars = 0x59,
 130         // GAP 0x5a, 0x5b, 0x5c, 0x5d, 0x5e
 131         tag_table_method_map = 0x5f,
 132         // GAP 0x60
 133         tag_table_adjustments = 0x61,
 134         // GAP 0x62, 0x63, 0x64, 0x65
 135         tag_table_upvar_capture_map = 0x66,
 136         // GAP 0x67, 0x68
 137         tag_table_const_qualif = 0x69,
 138         tag_table_cast_kinds = 0x6a,
 139     }
 140 }
 141
 142 pub const tag_item_trait_item_sort: usize = 0x70;
 143
 144 pub const tag_crate_triple: usize = 0x105; // top-level only
 145
 146 pub const tag_dylib_dependency_formats: usize = 0x106; // top-level only
 147
 148 // Language items are a top-level directory (for speed). Hierarchy:
 149 //
 150 // tag_lang_items
 151 // - tag_lang_items_item
 152 //   - tag_lang_items_item_id: u32
 153 //   - tag_lang_items_item_index: u32
 154
 155 pub const tag_lang_items: usize = 0x107; // top-level only
 156 pub const tag_lang_items_item: usize = 0x73;
 157 pub const tag_lang_items_item_id: usize = 0x74;
 158 pub const tag_lang_items_item_index: usize = 0x75;
 159 pub const tag_lang_items_missing: usize = 0x76;
 160
 161 pub const tag_item_unnamed_field: usize = 0x77;
 162 pub const tag_items_data_item_visibility: usize = 0x78;
 163 pub const tag_items_data_item_inherent_impl: usize = 0x79;
 164 // GAP 0x7a
 165 pub const tag_mod_child: usize = 0x7b;
 166 pub const tag_misc_info: usize = 0x108; // top-level only
 167 pub const tag_misc_info_crate_items: usize = 0x7c;
 168
 169 pub const tag_impls: usize = 0x109; // top-level only
 170 pub const tag_impls_trait: usize = 0x7d;
 171 pub const tag_impls_trait_impl: usize = 0x7e;
 172
 173 // GAP 0x7f, 0x80, 0x81
 174
 175 pub const tag_native_libraries: usize = 0x10a; // top-level only
 176 pub const tag_native_libraries_lib: usize = 0x82;
 177 pub const tag_native_libraries_name: usize = 0x83;
 178 pub const tag_native_libraries_kind: usize = 0x84;
 179
 180 pub const tag_plugin_registrar_fn: usize = 0x10b; // top-level only
 181
 182 pub const tag_method_argument_names: usize = 0x85;
 183 pub const tag_method_argument_name: usize = 0x86;
 184
 185 pub const tag_reachable_ids: usize = 0x10c; // top-level only
 186 pub const tag_reachable_id: usize = 0x87;
 187
 188 pub const tag_items_data_item_stability: usize = 0x88;
 189
 190 pub const tag_items_data_item_repr: usize = 0x89;
 191
 192 pub const tag_struct_fields: usize = 0x10d; // top-level only
 193 pub const tag_struct_field: usize = 0x8a;
 194
 195 pub const tag_items_data_item_struct_ctor: usize = 0x8b;
 196 pub const tag_attribute_is_sugared_doc: usize = 0x8c;
 197 // GAP 0x8d
 198 pub const tag_items_data_region: usize = 0x8e;
 199
 200 pub const tag_region_param_def: usize = 0x8f;
 201 pub const tag_region_param_def_ident: usize = 0x90;
 202 pub const tag_region_param_def_def_id: usize = 0x91;
 203 pub const tag_region_param_def_space: usize = 0x92;
 204 pub const tag_region_param_def_index: usize = 0x93;
 205
 206 pub const tag_type_param_def: usize = 0x94;
 207
 208 pub const tag_item_generics: usize = 0x95;
 209 pub const tag_method_ty_generics: usize = 0x96;
 210
 211 pub const tag_type_predicate: usize = 0x97;
 212 pub const tag_self_predicate: usize = 0x98;
 213 pub const tag_fn_predicate: usize = 0x99;
 214
 215 pub const tag_unsafety: usize = 0x9a;
 216
 217 pub const tag_associated_type_names: usize = 0x9b;
 218 pub const tag_associated_type_name: usize = 0x9c;
 219
 220 pub const tag_polarity: usize = 0x9d;
 221
 222 pub const tag_macro_defs: usize = 0x10e; // top-level only
 223 pub const tag_macro_def: usize = 0x9e;
 224 pub const tag_macro_def_body: usize = 0x9f;
 225
 226 pub const tag_paren_sugar: usize = 0xa0;
 227
 228 pub const tag_codemap: usize = 0xa1;
 229 pub const tag_codemap_filemap: usize = 0xa2;
 230
 231 pub const tag_item_super_predicates: usize = 0xa3;
 232
 233 pub const tag_defaulted_trait: usize = 0xa4;
 234
 235 pub const tag_impl_coerce_unsized_kind: usize = 0xa5;
 236
 237 pub const tag_items_data_item_constness: usize = 0xa6;
 238
 239 pub const tag_rustc_version: usize = 0x10f;
 240 pub fn rustc_version() -> String {
 241     format!(
 242         "rustc {}",
 243         option_env!("CFG_VERSION").unwrap_or("unknown version")
 244     )
 245 }