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   1 /*
   2  * This file is part of cparser.
   3  * Copyright (C) 2007-2008 Matthias Braun <matze@braunis.de>
   4  *
   5  * This program is free software; you can redistribute it and/or
   6  * modify it under the terms of the GNU General Public License
   7  * as published by the Free Software Foundation; either version 2
   8  * of the License, or (at your option) any later version.
   9  *
  10  * This program is distributed in the hope that it will be useful,
  11  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  12  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  13  * GNU General Public License for more details.
  14  *
  15  * You should have received a copy of the GNU General Public License
  16  * along with this program; if not, write to the Free Software
  17  * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA
  18  * 02111-1307, USA.
  19  */
  20 #ifndef AST_T_H
  21 #define AST_T_H
  22
  23 #include <libfirm/firm_types.h>
  24 #include <assert.h>
  25
  26 #include "ast.h"
  27 #include "symbol.h"
  28 #include "token_t.h"
  29 #include "type.h"
  30 #include "adt/obst.h"
  31
  32 extern struct obstack ast_obstack;
  33
  34 typedef enum {
  35         EXPR_UNKNOWN = 0,
  36         EXPR_INVALID,
  37         EXPR_REFERENCE,
  38         EXPR_CONST,
  39         EXPR_CHARACTER_CONSTANT,
  40         EXPR_WIDE_CHARACTER_CONSTANT,
  41         EXPR_STRING_LITERAL,
  42         EXPR_WIDE_STRING_LITERAL,
  43         EXPR_COMPOUND_LITERAL,
  44         EXPR_CALL,
  45         EXPR_CONDITIONAL,
  46         EXPR_SELECT,
  47         EXPR_ARRAY_ACCESS,
  48         EXPR_SIZEOF,
  49         EXPR_CLASSIFY_TYPE,
  50         EXPR_ALIGNOF,
  51
  52         EXPR_FUNCTION,
  53         EXPR_PRETTY_FUNCTION,
  54         EXPR_BUILTIN_SYMBOL,
  55         EXPR_BUILTIN_CONSTANT_P,
  56         EXPR_BUILTIN_PREFETCH,
  57         EXPR_OFFSETOF,
  58         EXPR_VA_START,
  59         EXPR_VA_ARG,
  60         EXPR_STATEMENT,
  61
  62         EXPR_UNARY_FIRST,
  63         EXPR_UNARY_NEGATE = EXPR_UNARY_FIRST,
  64         EXPR_UNARY_PLUS,
  65         EXPR_UNARY_BITWISE_NEGATE,
  66         EXPR_UNARY_NOT,
  67         EXPR_UNARY_DEREFERENCE,
  68         EXPR_UNARY_TAKE_ADDRESS,
  69         EXPR_UNARY_POSTFIX_INCREMENT,
  70         EXPR_UNARY_POSTFIX_DECREMENT,
  71         EXPR_UNARY_PREFIX_INCREMENT,
  72         EXPR_UNARY_PREFIX_DECREMENT,
  73         EXPR_UNARY_CAST,
  74         EXPR_UNARY_CAST_IMPLICIT, /**< compiler generated cast */
  75         EXPR_UNARY_ASSUME,        /**< MS __assume() */
  76         EXPR_UNARY_BITFIELD_EXTRACT,
  77         EXPR_UNARY_LAST = EXPR_UNARY_BITFIELD_EXTRACT,
  78
  79         EXPR_BINARY_FIRST,
  80         EXPR_BINARY_ADD = EXPR_BINARY_FIRST,
  81         EXPR_BINARY_SUB,
  82         EXPR_BINARY_MUL,
  83         EXPR_BINARY_DIV,
  84         EXPR_BINARY_MOD,
  85         EXPR_BINARY_EQUAL,
  86         EXPR_BINARY_NOTEQUAL,
  87         EXPR_BINARY_LESS,
  88         EXPR_BINARY_LESSEQUAL,
  89         EXPR_BINARY_GREATER,
  90         EXPR_BINARY_GREATEREQUAL,
  91         EXPR_BINARY_BITWISE_AND,
  92         EXPR_BINARY_BITWISE_OR,
  93         EXPR_BINARY_BITWISE_XOR,
  94         EXPR_BINARY_LOGICAL_AND,
  95         EXPR_BINARY_LOGICAL_OR,
  96         EXPR_BINARY_SHIFTLEFT,
  97         EXPR_BINARY_SHIFTRIGHT,
  98         EXPR_BINARY_ASSIGN,
  99         EXPR_BINARY_MUL_ASSIGN,
 100         EXPR_BINARY_DIV_ASSIGN,
 101         EXPR_BINARY_MOD_ASSIGN,
 102         EXPR_BINARY_ADD_ASSIGN,
 103         EXPR_BINARY_SUB_ASSIGN,
 104         EXPR_BINARY_SHIFTLEFT_ASSIGN,
 105         EXPR_BINARY_SHIFTRIGHT_ASSIGN,
 106         EXPR_BINARY_BITWISE_AND_ASSIGN,
 107         EXPR_BINARY_BITWISE_XOR_ASSIGN,
 108         EXPR_BINARY_BITWISE_OR_ASSIGN,
 109         EXPR_BINARY_COMMA,
 110
 111         EXPR_BINARY_BUILTIN_EXPECT,
 112         EXPR_BINARY_ISGREATER,
 113         EXPR_BINARY_ISGREATEREQUAL,
 114         EXPR_BINARY_ISLESS,
 115         EXPR_BINARY_ISLESSEQUAL,
 116         EXPR_BINARY_ISLESSGREATER,
 117         EXPR_BINARY_ISUNORDERED,
 118         EXPR_BINARY_LAST = EXPR_BINARY_ISUNORDERED,
 119 } expression_kind_t;
 120
 121 /* convenience macros */
 122 #define EXPR_BINARY_CASES                  \
 123         case EXPR_BINARY_ADD:                  \
 124         case EXPR_BINARY_SUB:                  \
 125         case EXPR_BINARY_MUL:                  \
 126         case EXPR_BINARY_DIV:                  \
 127         case EXPR_BINARY_MOD:                  \
 128         case EXPR_BINARY_EQUAL:                \
 129         case EXPR_BINARY_NOTEQUAL:             \
 130         case EXPR_BINARY_LESS:                 \
 131         case EXPR_BINARY_LESSEQUAL:            \
 132         case EXPR_BINARY_GREATER:              \
 133         case EXPR_BINARY_GREATEREQUAL:         \
 134         case EXPR_BINARY_BITWISE_AND:          \
 135         case EXPR_BINARY_BITWISE_OR:           \
 136         case EXPR_BINARY_BITWISE_XOR:          \
 137         case EXPR_BINARY_LOGICAL_AND:          \
 138         case EXPR_BINARY_LOGICAL_OR:           \
 139         case EXPR_BINARY_SHIFTLEFT:            \
 140         case EXPR_BINARY_SHIFTRIGHT:           \
 141         case EXPR_BINARY_ASSIGN:               \
 142         case EXPR_BINARY_MUL_ASSIGN:           \
 143         case EXPR_BINARY_DIV_ASSIGN:           \
 144         case EXPR_BINARY_MOD_ASSIGN:           \
 145         case EXPR_BINARY_ADD_ASSIGN:           \
 146         case EXPR_BINARY_SUB_ASSIGN:           \
 147         case EXPR_BINARY_SHIFTLEFT_ASSIGN:     \
 148         case EXPR_BINARY_SHIFTRIGHT_ASSIGN:    \
 149         case EXPR_BINARY_BITWISE_AND_ASSIGN:   \
 150         case EXPR_BINARY_BITWISE_XOR_ASSIGN:   \
 151         case EXPR_BINARY_BITWISE_OR_ASSIGN:    \
 152         case EXPR_BINARY_COMMA:                \
 153         case EXPR_BINARY_BUILTIN_EXPECT:       \
 154         case EXPR_BINARY_ISGREATER:            \
 155         case EXPR_BINARY_ISGREATEREQUAL:       \
 156         case EXPR_BINARY_ISLESS:               \
 157         case EXPR_BINARY_ISLESSEQUAL:          \
 158         case EXPR_BINARY_ISLESSGREATER:        \
 159         case EXPR_BINARY_ISUNORDERED:
 160
 161 #define EXPR_UNARY_CASES                   \
 162         case EXPR_UNARY_NEGATE:                \
 163         case EXPR_UNARY_PLUS:                  \
 164         case EXPR_UNARY_BITWISE_NEGATE:        \
 165         case EXPR_UNARY_NOT:                   \
 166         case EXPR_UNARY_DEREFERENCE:           \
 167         case EXPR_UNARY_TAKE_ADDRESS:          \
 168         case EXPR_UNARY_POSTFIX_INCREMENT:     \
 169         case EXPR_UNARY_POSTFIX_DECREMENT:     \
 170         case EXPR_UNARY_PREFIX_INCREMENT:      \
 171         case EXPR_UNARY_PREFIX_DECREMENT:      \
 172         case EXPR_UNARY_CAST:                  \
 173         case EXPR_UNARY_CAST_IMPLICIT:         \
 174         case EXPR_UNARY_ASSUME:                \
 175         case EXPR_UNARY_BITFIELD_EXTRACT:
 176
 177 struct scope_t {
 178         declaration_t *declarations;      /**< List of declarations in this scope. */
 179         declaration_t *last_declaration;
 180 };
 181
 182 struct expression_base_t {
 183         expression_kind_t   kind;
 184         type_t             *type;
 185         source_position_t   source_position;
 186 };
 187
 188 struct const_expression_t {
 189         expression_base_t  base;
 190         union {
 191                 long long     int_value;
 192                 long double   float_value;
 193                 string_t      character;
 194                 wide_string_t wide_character;
 195         } v;
 196 };
 197
 198 struct string_literal_expression_t {
 199         expression_base_t  base;
 200         string_t           value;
 201 };
 202
 203 struct wide_string_literal_expression_t {
 204         expression_base_t  base;
 205         wide_string_t      value;
 206 };
 207
 208 struct compound_literal_expression_t {
 209         expression_base_t  base;
 210         type_t            *type;
 211         initializer_t     *initializer;
 212 };
 213
 214 struct builtin_symbol_expression_t {
 215         expression_base_t  base;
 216         symbol_t          *symbol;
 217 };
 218
 219 struct builtin_constant_expression_t {
 220         expression_base_t  base;
 221         expression_t      *value;
 222 };
 223
 224 struct builtin_prefetch_expression_t {
 225         expression_base_t  base;
 226         expression_t      *adr;
 227         expression_t      *rw;
 228         expression_t      *locality;
 229 };
 230
 231 struct reference_expression_t {
 232         expression_base_t  base;
 233         symbol_t          *symbol;
 234         declaration_t     *declaration;
 235 };
 236
 237 struct call_argument_t {
 238         expression_t    *expression;
 239         call_argument_t *next;
 240 };
 241
 242 struct call_expression_t {
 243         expression_base_t  base;
 244         expression_t      *function;
 245         call_argument_t   *arguments;
 246 };
 247
 248 struct unary_expression_t {
 249         expression_base_t  base;
 250         expression_t      *value;
 251 };
 252
 253 struct binary_expression_t {
 254         expression_base_t  base;
 255         expression_t      *left;
 256         expression_t      *right;
 257 };
 258
 259 struct select_expression_t {
 260         expression_base_t  base;
 261         expression_t      *compound;
 262         symbol_t          *symbol;
 263
 264         declaration_t     *compound_entry;
 265 };
 266
 267 struct array_access_expression_t {
 268         expression_base_t  base;
 269         expression_t      *array_ref;
 270         expression_t      *index;
 271         bool               flipped; /* index/ref was written in a 5[a] way */
 272 };
 273
 274 struct typeprop_expression_t {
 275         expression_base_t  base;
 276         type_t            *type;
 277         expression_t      *tp_expression;
 278 };
 279
 280 struct designator_t {
 281         source_position_t  source_position;
 282         symbol_t          *symbol;
 283         expression_t      *array_index;
 284         designator_t      *next;
 285 };
 286
 287 struct offsetof_expression_t {
 288         expression_base_t  base;
 289         type_t            *type;
 290         designator_t      *designator;
 291 };
 292
 293 struct va_start_expression_t {
 294         expression_base_t  base;
 295         expression_t      *ap;
 296         declaration_t     *parameter;
 297 };
 298
 299 struct va_arg_expression_t {
 300         expression_base_t  base;
 301         expression_t      *ap;
 302 };
 303
 304 struct conditional_expression_t {
 305         expression_base_t  base;
 306         expression_t      *condition;
 307         expression_t      *true_expression;
 308         expression_t      *false_expression;
 309 };
 310
 311 struct statement_expression_t {
 312         expression_base_t  base;
 313         statement_t       *statement;
 314 };
 315
 316 struct classify_type_expression_t {
 317         expression_base_t  base;
 318         expression_t      *type_expression;
 319 };
 320
 321 union expression_t {
 322         expression_kind_t                kind;
 323         expression_base_t                base;
 324         const_expression_t               conste;
 325         string_literal_expression_t      string;
 326         wide_string_literal_expression_t wide_string;
 327         compound_literal_expression_t    compound_literal;
 328         builtin_symbol_expression_t      builtin_symbol;
 329         builtin_constant_expression_t    builtin_constant;
 330         builtin_prefetch_expression_t    builtin_prefetch;
 331         reference_expression_t           reference;
 332         call_expression_t                call;
 333         unary_expression_t               unary;
 334         binary_expression_t              binary;
 335         select_expression_t              select;
 336         array_access_expression_t        array_access;
 337         typeprop_expression_t            typeprop;
 338         offsetof_expression_t            offsetofe;
 339         va_start_expression_t            va_starte;
 340         va_arg_expression_t              va_arge;
 341         conditional_expression_t         conditional;
 342         statement_expression_t           statement;
 343         classify_type_expression_t       classify_type;
 344 };
 345
 346 typedef enum {
 347         STORAGE_CLASS_NONE,
 348         STORAGE_CLASS_EXTERN,
 349         STORAGE_CLASS_STATIC,
 350         STORAGE_CLASS_TYPEDEF,
 351         STORAGE_CLASS_AUTO,
 352         STORAGE_CLASS_REGISTER,
 353         STORAGE_CLASS_ENUM_ENTRY,
 354         STORAGE_CLASS_THREAD,
 355         STORAGE_CLASS_THREAD_EXTERN,
 356         STORAGE_CLASS_THREAD_STATIC,
 357 } storage_class_tag_t;
 358
 359 typedef enum {
 360         NAMESPACE_NORMAL,
 361         NAMESPACE_STRUCT,
 362         NAMESPACE_UNION,
 363         NAMESPACE_ENUM,
 364         NAMESPACE_LABEL,
 365 } namespace_t;
 366
 367 typedef enum {
 368         INITIALIZER_VALUE,
 369         INITIALIZER_LIST,
 370         INITIALIZER_STRING,
 371         INITIALIZER_WIDE_STRING,
 372         INITIALIZER_DESIGNATOR
 373 } initializer_kind_t;
 374
 375 struct initializer_base_t {
 376         initializer_kind_t kind;
 377 };
 378
 379 struct initializer_value_t {
 380         initializer_base_t  base;
 381         expression_t       *value;
 382 };
 383
 384 struct initializer_list_t {
 385         initializer_base_t  base;
 386         size_t              len;
 387         initializer_t      *initializers[];
 388 };
 389
 390 struct initializer_string_t {
 391         initializer_base_t base;
 392         string_t           string;
 393 };
 394
 395 struct initializer_wide_string_t {
 396         initializer_base_t  base;
 397         wide_string_t       string;
 398 };
 399
 400 struct initializer_designator_t {
 401         initializer_base_t  base;
 402         designator_t       *designator;
 403 };
 404
 405 union initializer_t {
 406         initializer_kind_t        kind;
 407         initializer_base_t        base;
 408         initializer_value_t       value;
 409         initializer_list_t        list;
 410         initializer_string_t      string;
 411         initializer_wide_string_t wide_string;
 412         initializer_designator_t  designator;
 413 };
 414
 415 typedef enum {
 416         DM_DLLIMPORT   = (1 << 0),
 417         DM_DLLEXPORT   = (1 << 1),
 418         DM_THREAD      = (1 << 2),
 419         DM_NAKED       = (1 << 3),
 420         DM_FORCEINLINE = (1 << 4),
 421         DM_NOTHROW     = (1 << 5),
 422         DM_NORETURN    = (1 << 6),
 423         DM_NOINLINE    = (1 << 7)
 424 } decl_modifier_t;
 425
 426 typedef unsigned short decl_modifiers_t;
 427
 428 struct declaration_t {
 429         unsigned char       namespc;
 430         unsigned char       declared_storage_class;
 431         unsigned char       storage_class;
 432         decl_modifiers_t    modifiers;
 433         unsigned int        address_taken : 1;
 434         unsigned int        is_inline     : 1;
 435         unsigned int        used          : 1;  /**< Set if the declaration is used. */
 436         type_t             *type;
 437         symbol_t           *symbol;
 438         source_position_t   source_position;
 439         union {
 440                 bool            is_defined;
 441                 statement_t    *statement;
 442                 initializer_t  *initializer;
 443                 expression_t   *enum_value;
 444         } init;
 445         scope_t             scope;
 446         scope_t            *parent_scope;
 447
 448         /** next declaration in a scope */
 449         declaration_t      *next;
 450         /** next declaration with same symbol */
 451         declaration_t      *symbol_next;
 452
 453         /* the following fields are used in ast2firm module */
 454         unsigned char       declaration_kind;
 455         union {
 456                 unsigned int  value_number;
 457                 ir_entity    *entity;
 458                 ir_node      *block;
 459                 ir_node      *vla_base;
 460                 tarval       *enum_val;
 461                 ir_type      *irtype;
 462         } v;
 463 };
 464
 465 typedef enum {
 466         STATEMENT_INVALID,
 467         STATEMENT_COMPOUND,
 468         STATEMENT_RETURN,
 469         STATEMENT_DECLARATION,
 470         STATEMENT_IF,
 471         STATEMENT_SWITCH,
 472         STATEMENT_EXPRESSION,
 473         STATEMENT_CONTINUE,
 474         STATEMENT_BREAK,
 475         STATEMENT_GOTO,
 476         STATEMENT_LABEL,
 477         STATEMENT_CASE_LABEL,
 478         STATEMENT_WHILE,
 479         STATEMENT_DO_WHILE,
 480         STATEMENT_FOR,
 481         STATEMENT_ASM
 482 } statement_kind_t;
 483
 484 struct statement_base_t {
 485         statement_kind_t   kind;
 486         statement_t       *next;
 487         source_position_t  source_position;
 488 };
 489
 490 struct return_statement_t {
 491         statement_base_t  base;
 492         expression_t     *value;
 493 };
 494
 495 struct compound_statement_t {
 496         statement_base_t  base;
 497         statement_t      *statements;
 498         scope_t           scope;
 499 };
 500
 501 struct declaration_statement_t {
 502         statement_base_t  base;
 503         declaration_t    *declarations_begin;
 504         declaration_t    *declarations_end;
 505 };
 506
 507 struct if_statement_t {
 508         statement_base_t  base;
 509         expression_t     *condition;
 510         statement_t      *true_statement;
 511         statement_t      *false_statement;
 512 };
 513
 514 struct switch_statement_t {
 515         statement_base_t       base;
 516         expression_t           *expression;
 517         statement_t            *body;
 518         case_label_statement_t *first_case, *last_case;
 519 };
 520
 521 struct goto_statement_t {
 522         statement_base_t  base;
 523         declaration_t    *label;     /**< The destination label. */
 524         goto_statement_t *next;      /**< links all goto statements of a function */
 525 };
 526
 527 struct case_label_statement_t {
 528         statement_base_t        base;
 529         expression_t           *expression;  /**< The case label expression, NULL for default label. */
 530         expression_t           *end_range;   /**< For GNUC case a .. b: the end range expression, NULL else. */
 531         statement_t            *statement;
 532         case_label_statement_t *next; /**< link to the next case label in switch */
 533 };
 534
 535 struct label_statement_t {
 536         statement_base_t   base;
 537         declaration_t     *label;
 538         statement_t       *statement;
 539         label_statement_t *next;    /**< links all label statements of a function */
 540 };
 541
 542 struct expression_statement_t {
 543         statement_base_t  base;
 544         expression_t     *expression;
 545 };
 546
 547 struct while_statement_t {
 548         statement_base_t  base;
 549         expression_t     *condition;
 550         statement_t      *body;
 551 };
 552
 553 struct do_while_statement_t {
 554         statement_base_t  base;
 555         expression_t     *condition;
 556         statement_t      *body;
 557 };
 558
 559 struct for_statement_t {
 560         statement_base_t  base;
 561         expression_t     *initialisation;
 562         expression_t     *condition;
 563         expression_t     *step;
 564         statement_t      *body;
 565         scope_t           scope;
 566 };
 567
 568 struct asm_constraint_t {
 569         string_t          constraints;
 570         expression_t     *expression;
 571         symbol_t         *symbol;
 572         asm_constraint_t *next;
 573 };
 574
 575 struct asm_clobber_t {
 576         string_t       clobber;
 577         asm_clobber_t *next;
 578 };
 579
 580 struct asm_statement_t {
 581         statement_base_t  base;
 582         string_t          asm_text;
 583         asm_constraint_t *inputs;
 584         asm_constraint_t *outputs;
 585         asm_clobber_t    *clobbers;
 586         bool              is_volatile;
 587 };
 588
 589 union statement_t {
 590         statement_kind_t         kind;
 591         statement_base_t         base;
 592         return_statement_t       returns;
 593         compound_statement_t     compound;
 594         declaration_statement_t  declaration;
 595         if_statement_t           ifs;
 596         switch_statement_t       switchs;
 597         goto_statement_t         gotos;
 598         case_label_statement_t   case_label;
 599         label_statement_t        label;
 600         expression_statement_t   expression;
 601         while_statement_t        whiles;
 602         do_while_statement_t     do_while;
 603         for_statement_t          fors;
 604         asm_statement_t          asms;
 605 };
 606
 607 struct translation_unit_t {
 608         scope_t scope;
 609 };
 610
 611 static inline
 612 void *_allocate_ast(size_t size)
 613 {
 614         return obstack_alloc(&ast_obstack, size);
 615 }
 616
 617 #define allocate_ast(size)                 _allocate_ast(size)
 618
 619 #endif