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28 lines
489 B
28 lines
489 B
//
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// choice.cc
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//
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// Copyright (c) 2023 Yuji Hirose. All rights reserved.
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// MIT License
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//
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#include <cstdlib>
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#include <iostream>
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#include <peglib.h>
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using namespace peg;
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int main(void) {
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parser parser(R"(
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type <- 'string' / 'int' / 'double'
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%whitespace <- [ \t\r\n]*
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)");
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parser["type"] = [](const SemanticValues &vs) {
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std::cout << vs.choice() << std::endl;
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};
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if (parser.parse("int")) { return 0; }
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std::cout << "syntax error..." << std::endl;
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return -1;
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}
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