diff options
Diffstat (limited to 'util/qlalr/examples/qparser/calc.l')
| -rw-r--r-- | util/qlalr/examples/qparser/calc.l | 20 |
1 files changed, 20 insertions, 0 deletions
diff --git a/util/qlalr/examples/qparser/calc.l b/util/qlalr/examples/qparser/calc.l new file mode 100644 index 0000000..95181d5 --- /dev/null +++ b/util/qlalr/examples/qparser/calc.l @@ -0,0 +1,20 @@ + +%option noyywrap + +%{ +#include "calc_parser.h" +#include <cstdlib> + +#define YY_DECL int CalcParser::nextToken() +%} + +%% + +[ \t\n] { /* eat me */ } +[0-9]+ { sym(1) = atoi (yytext); return Token_number; } +"(" { return Token_lparen; } +")" { return Token_rparen; } +"+" { return Token_plus; } +"-" { return Token_minus; } + +%% |