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