23 lines
482 B
C
23 lines
482 B
C
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#include "parser_internal.h"
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static HParseResult* parse_not(void* env, HParseState* state) {
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HInputStream bak = state->input_stream;
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if (h_do_parse((HParser*)env, state))
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return NULL;
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else {
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state->input_stream = bak;
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return make_result(state, NULL);
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}
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}
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static const HParserVtable not_vt = {
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.parse = parse_not,
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};
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const HParser* h_not(const HParser* p) {
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HParser *res = g_new(HParser, 1);
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res->vtable = ¬_vt;
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res->env = (void*)p;
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return res;
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}
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