48 lines
834 B
Plaintext
48 lines
834 B
Plaintext
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%option noyywrap nodefault yylineno nounput
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%{
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#include <fmt/core.h>
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#include "raw_ast.hpp"
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#include "parser.h"
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using namespace std;
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#define YYDEBUG 1
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%}
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/* float exponent */
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EXP ([Ee][-+]?[0-9]+)
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%%
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"+" { return ADD; }
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"-" { return SUB; }
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"*" { return MUL; }
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"/" { return DIV; }
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"|" { return ABS; }
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"(" { return OP; }
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")" { return CP; }
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"=" { return EQUALS; }
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"," { return CM; }
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":" { return COLON; }
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\[ { return O_SQ; }
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\] { return C_SQ; }
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[0-9]+"."[0-9]*{EXP}? |
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"."?[0-9]+{EXP}? {
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yylval.d = atoi(yytext);
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return NUMBER; }
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"reduce" { return REDUCE; }
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"select" { return SELECT; }
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[a-z_A-Z][a-z_A-Z0-9]* {
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yylval.s = strdup(yytext);
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return NAME; }
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\n { return EOL; }
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"//".*
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[ \t] { /* ignore white space */ }
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. { throw std::runtime_error(fmt::format("Mystery character {}", *yytext)); }
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%%
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