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Got a lot of regex test cases working

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This commit is contained in:
Dan Hirsch 2013-05-23 23:26:22 +02:00
parent f37a13ef41
commit 0600440b7c
11 changed files with 148 additions and 14 deletions
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18
src/parsers/ch.c
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@ -1,3 +1,4 @@
#include <assert.h>
#include "parser_internal.h"
static HParseResult* parse_ch(void* env, HParseState *state) {
@ -20,11 +21,26 @@ static HCFChoice* desugar_ch(HAllocator *mm__, void *env) {
return ret;
}
static bool h_svm_action_ch(HArena *arena, HSVMContext *ctx, void* env) {
// BUG: relies un undefined behaviour: int64_t is a signed uint64_t; not necessarily true on 32-bit
HParsedToken *top = ctx->stack[ctx->stack_count-1];
assert(top->token_type == TT_BYTES);
uint64_t res = 0;
for (size_t i = 0; i < top->bytes.len; i++)
res = (res << 8) | top->bytes.token[i]; // TODO: Handle other endiannesses.
top->uint = res; // possibly cast to signed through union
top->token_type = TT_UINT;
return true;
}
static bool ch_ctrvm(HRVMProg *prog, void* env) {
uint8_t c = (uint8_t)(unsigned long)(env);
// TODO: Does this capture anything?
h_rvm_insert_insn(prog, RVM_MATCH, c & c << 8);
h_rvm_insert_insn(prog, RVM_PUSH, 0);
h_rvm_insert_insn(prog, RVM_MATCH, c | c << 8);
h_rvm_insert_insn(prog, RVM_STEP, 0);
h_rvm_insert_insn(prog, RVM_CAPTURE, 0);
h_rvm_insert_insn(prog, RVM_ACTION, h_rvm_create_action(prog, h_svm_action_ch, env));
return true;
}