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Diffstat (limited to 'examples/manual/front.lex')
| -rw-r--r-- | examples/manual/front.lex | 40 |
1 files changed, 40 insertions, 0 deletions
diff --git a/examples/manual/front.lex b/examples/manual/front.lex new file mode 100644 index 0000000..449cb00 --- /dev/null +++ b/examples/manual/front.lex @@ -0,0 +1,40 @@ +%{ +#include <stdio.h> +#include <string.h> +#include "y.tab.h" /* this comes from bison */ + +#define TRUE 1 +#define FALSE 0 + +#define copy_and_return(token_type) { strcpy(yylval.name,yytext); \ + return(token_type); } + +int yylexlinenum = 0; /* so we can count lines */ +%} + +%% + /* Lexical scanning rules begin from here. */ + +MEN|WOMEN|STOCKS|TREES copy_and_return(NOUN) +MISTAKES|GNUS|EMPLOYEES copy_and_return(NOUN) +LOSERS|USERS|CARS|WINDOWS copy_and_return(NOUN) + +DATABASE|NETWORK|FSF|GNU copy_and_return(PROPER_NOUN) +COMPANY|HOUSE|OFFICE|LPF copy_and_return(PROPER_NOUN) + +THE|THIS|THAT|THOSE copy_and_return(DECLARATIVE) + +ALL|FIRST|LAST copy_and_return(CONDITIONAL) + +FIND|SEARCH|SORT|ERASE|KILL copy_and_return(VERB) +ADD|REMOVE|DELETE|PRINT copy_and_return(VERB) + +QUICKLY|SLOWLY|CAREFULLY copy_and_return(ADVERB) + +IN|AT|ON|AROUND|INSIDE|ON copy_and_return(POSITIONAL) + +"." return(PERIOD); +"\n" yylexlinenum++; return(NEWLINE); +. +%% + |