ref: c1768b2e370906fc8418bc26cd69d88529c8c96b
dir: /types.c/
#include <stdint.h> #include <stdlib.h> #include <string.h> #include "sizes.h" #include "cc.h" #include "machine.h" #define NR_TYPE_HASH 16 Type *voidtype = &(Type) { .op = VOID, .letter = 'W' }, *booltype = &(Type) { .op = INT, .letter = 'B', .defined = 1 }, *uchartype = &(Type) { .op = INT, .letter = 'M', .sign = 1, .defined = 1 }, *chartype = &(Type) { .op = INT, .letter = 'C', .defined = 1 }, *uinttype = &(Type) { .op = INT, .letter = 'U', .sign = 1, .defined = 1 }, *inttype = &(Type) { .op = INT, .letter = 'I', .defined = 1 }, *ushortype = &(Type) { .op = INT, .letter = 'E', .defined = 1 }, *shortype = &(Type) { .op = INT, .letter = 'K', .defined = 1 }, *longtype = &(Type) { .op = INT, .letter = 'L', .defined = 1 }, *ulongtype = &(Type) { .op = INT, .letter = 'Z', .sign = 1, .defined = 1 }, *ullongtype = &(Type) { .op = INT, .letter = 'O', .sign = 1, .defined = 1 }, *llongtype = &(Type) { .op = INT, .letter = 'G', .defined = 1 }, *floattype = &(Type) { .op = FLOAT, .letter = 'F', .defined = 1 }, *doubletype = &(Type) { .op = FLOAT, .letter = 'D', .defined = 1 }, *ldoubletype = &(Type) { .op = FLOAT, .letter = 'H', .defined = 1 }; Type * ctype(int8_t type, int8_t sign, int8_t size) { if (type == CHAR && !sign) sign = options.charsign; if (sign == SIGNED) sign = 0; if (type == DOUBLE) type = FLOAT, size += LONG; switch (type) { case VOID: return voidtype; case BOOL: return booltype; case CHAR: return (sign) ? uchartype : chartype; case INT: switch (size) { case 0: return (sign) ? uinttype : inttype; case SHORT: return (sign) ? ushortype : shortype; case LONG: return (sign) ? longtype : ulongtype; case LONG+LONG: return (sign) ? ullongtype : llongtype; } case FLOAT: switch (size) { case 0: return floattype; case LONG: return doubletype; case LONG+LONG: return ldoubletype; } } } Type * mktype(Type *tp, uint8_t op, Symbol *sym, uint16_t nelem) { static Type *typetab[NR_TYPE_HASH], **tbl; static uint8_t t; register Type *bp; char letter; t = (op ^ (uint8_t) ((unsigned short) tp >> 3)) & NR_TYPE_HASH-1; tbl = &typetab[t]; if (op != FTN || op != STRUCT || op != UNION || op != ENUM) { for (bp = *tbl; bp; bp = bp->next) { if (bp->type == tp && bp->op == op && bp->sym == sym && bp->nelem == nelem) { return bp; } } } switch (op) { case PTR: letter = 'R'; break; case FTN: letter = 'F'; break; case ARY: letter = 'V'; break; case ENUM: letter = 'E'; break; case STRUCT: letter = 'S'; break; default: abort(); } bp = xmalloc(sizeof(*bp)); bp->next = *tbl; bp->type = tp; bp->op = op; bp->nelem = nelem; bp->sym = sym; bp->letter = letter; return *tbl = bp; } Type * qualifier(Type *tp, uint8_t qlf) { uint8_t q = tp->op; if (!qlf) return tp; if (q & TQUALIFIER) { if (q == qlf) return tp; tp = tp->type; qlf |= q; } return mktype(tp, qlf|TQUALIFIER, NULL, 0); }