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Still doesn't build, but desugaring is farther along

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This commit is contained in:
Meredith L. Patterson 2013-02-02 19:31:18 -05:00
parent 36e1f66de0
commit 156be7a559
16 changed files with 266 additions and 26 deletions
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29
src/parsers/charset.c
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@ -1,25 +1,7 @@
#include <string.h>
#include "../internal.h"
#include "parser_internal.h"
typedef unsigned int *HCharset;
static inline HCharset new_charset(HAllocator* mm__) {
HCharset cs = h_new(unsigned int, 256 / sizeof(unsigned int));
memset(cs, 0, 256);
return cs;
}
static inline int charset_isset(HCharset cs, uint8_t pos) {
return !!(cs[pos / sizeof(*cs)] & (1 << (pos % sizeof(*cs))));
}
static inline void charset_set(HCharset cs, uint8_t pos, int val) {
cs[pos / sizeof(*cs)] =
val
? cs[pos / sizeof(*cs)] | (1 << (pos % sizeof(*cs)))
: cs[pos / sizeof(*cs)] & ~(1 << (pos % sizeof(*cs)));
}
static HParseResult* parse_charset(void *env, HParseState *state) {
uint8_t in = h_read_bits(&state->input_stream, 8, false);
HCharset cs = (HCharset)env;
@ -32,10 +14,19 @@ static HParseResult* parse_charset(void *env, HParseState *state) {
return NULL;
}
static HCFChoice* desugar_charset(HAllocator *mm__, void *env) {
HCFChoice *ret = h_new(HCFChoice, 1);
ret->type = HCF_CHARSET;
ret->charset = (HCharset)env;
ret->action = NULL;
return ret;
}
static const HParserVtable charset_vt = {
.parse = parse_charset,
.isValidRegular = h_true,
.isValidCF = h_true,
.desugar = desugar_charset,
};
const HParser* h_ch_range(const uint8_t lower, const uint8_t upper) {