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Code Issues 1 Releases Wiki Activity

Address #252

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Add repeat form (instead of exactly).
This commit is contained in:
Calvin Rose 2020-01-14 19:58:03 -06:00
parent f001b0a40c
commit b567ece401
1 changed files with 8 additions and 0 deletions
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8
src/core/peg.c
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@ -728,6 +728,13 @@ static void spec_opt(Builder *b, int32_t argc, const Janet *argv) {
emit_3(r, RULE_BETWEEN, 0, 1, subrule); emit_3(r, RULE_BETWEEN, 0, 1, subrule);
} }
static void spec_repeat(Builder *b, int32_t argc, const Janet *argv) {
peg_fixarity(b, argc, 2);
Reserve r = reserve(b, 4);
int32_t n = peg_getnat(b, argv[0]);
uint32_t subrule = peg_compile1(b, argv[1]);
emit_3(r, RULE_BETWEEN, n, n, subrule);
}
/* Rule of the form [rule] */ /* Rule of the form [rule] */
static void spec_onerule(Builder *b, int32_t argc, const Janet *argv, uint32_t op) { static void spec_onerule(Builder *b, int32_t argc, const Janet *argv, uint32_t op) {
@ -870,6 +877,7 @@ static const SpecialPair peg_specials[] = {
{"position", spec_position}, {"position", spec_position},
{"quote", spec_capture}, {"quote", spec_capture},
{"range", spec_range}, {"range", spec_range},
{"repeat", spec_repeat},
{"replace", spec_replace}, {"replace", spec_replace},
{"sequence", spec_sequence}, {"sequence", spec_sequence},
{"set", spec_set}, {"set", spec_set},