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