33 lines
796 B
C
33 lines
796 B
C
#include "parser_internal.h"
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static HParseResult* parse_nothing() {
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// not a mistake, this parser always fails
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return NULL;
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}
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static void desugar_nothing(HAllocator *mm__, HCFStack *stk__, void *env) {
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HCFS_BEGIN_CHOICE() {
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} HCFS_END_CHOICE();
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}
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static bool nothing_ctrvm(HRVMProg *prog, void* env) {
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h_rvm_insert_insn(prog, RVM_MATCH, 0x0000);
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h_rvm_insert_insn(prog, RVM_MATCH, 0xFFFF);
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return true;
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}
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static const HParserVtable nothing_vt = {
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.parse = parse_nothing,
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.isValidRegular = h_true,
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.isValidCF = h_true,
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.desugar = desugar_nothing,
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.compile_to_rvm = nothing_ctrvm,
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.higher = false,
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};
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HParser* h_nothing_p() {
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return h_nothing_p__m(&system_allocator);
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}
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HParser* h_nothing_p__m(HAllocator* mm__) {
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return h_new_parser(mm__, ¬hing_vt, NULL);
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}
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