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