nsz Git - cparser/blob - ast_t.h

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