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