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65 lines
1.4 KiB
65 lines
1.4 KiB
#include <fmt/core.h>
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#include <iostream>
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%%{
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machine Parser;
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alphtype char;
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action token {
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tk = input.substr(start - begin, fpc - start);
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std::cout << "TOKEN: " << std::quoted(tk) << '\n';
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}
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action mark { start = fpc; }
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action title { fmt::println("TITLE"); }
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action enum { fmt::println("ENUM"); }
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action content {
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tk = input.substr(start - begin, fpc - start);
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std::cout << "CONTENT:" << std::quoted(tk) << '\n';
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}
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action start { fmt::println("----- START"); }
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action end { fmt::println("END"); }
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action plain { fmt::println("PLAIN"); }
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eol = "\n";
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start = "===" eol $start;
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end = "---" eol $end;
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pound = "#" $title;
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asterisk = "*" $enum;
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content = (any+ -- (eol|end)) >mark %content;
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title = pound space* content eol;
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enum = asterisk space* content eol;
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line = space* content eol;
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blank = space* eol;
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slide = (title | enum | line | blank)+ end;
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main := start (slide)+;
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}%%
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%% write data;
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bool Parser::parse(const std::string& input) {
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int cs = 0;
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const char *start = nullptr;
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const char *begin = input.data();
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const char *p = input.data();
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const char *pe = p + input.size();
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const char *eof = p + input.size(); (void)eof;
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std::string tk;
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%% write init;
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%% write exec;
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bool good = pe - p == 0;
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if(good) {
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finalize();
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} else {
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error = true;
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std::cout << "!!!!!!!!!!!!!!!!!!!!!! error at:";
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std::cout << p;
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}
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return good;
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}
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