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2 * test/demos/parser/lexer.ll |
2 * test/demos/parser/lexer.ll |
3 * Copyright (C) 2008 Markus Broeker |
3 * Copyright (C) 2008 Markus Broeker |
4 */ |
4 */ |
5 |
5 |
6 %{ |
6 %{ |
7 #include <stdio.h> |
7 #include <stdio.h> |
8 #include "parser.h" |
8 #include "parser.h" |
9 %} |
9 %} |
10 |
10 |
11 %% |
11 %% |
12 |
12 |
13 [0-9]+ { yylval = atoi(yytext); return DIGIT; } |
13 [0-9]+ { yylval = atoi(yytext); return DIGIT; } |
14 [a-zA-Z] { yylval = yytext[0]; return LETTER; } |
14 [a-zA-Z] { yylval = yytext[0]; return LETTER; } |
15 "+" { return PLUS; } |
15 "+" { return PLUS; } |
16 "-" { return MINUS; } |
16 "-" { return MINUS; } |
17 "*" { return MUL; } |
17 "*" { return MUL; } |
18 "/" { return DIV; } |
18 "/" { return DIV; } |
19 "("|")"|"=" { return yytext[0]; } |
19 "("|")"|"=" { return yytext[0]; } |
20 [ \t]+ {} |
20 [ \t]+ {} |
21 \n { return yytext[0]; } |
21 \n { return yytext[0]; } |
22 . { printf("FEHLER: %s\n", yytext); } |
22 . { printf("FEHLER: %s\n", yytext); } |
23 %% |
23 %% |