// brainfuck.rl written by Boris 'billiob' Faure billiob<att>gmail<dott>com
/************************* Required for every parser *************************/
#ifndef OHCOUNT_BRAINFUCK_PARSER_H
#define OHCOUNT_BRAINFUCK_PARSER_H
#include "../parser_macros.h"
// the name of the language
const char *BRAINFUCK_LANG = LANG_BRAINFUCK;
// the languages entities
const char *brainfuck_entities[] = {
"space", "comment", "operator"
};
// constants associated with the entities
enum {
BRAINFUCK_SPACE = 0, BRAINFUCK_COMMENT, BRAINFUCK_OPERATOR
};
/*****************************************************************************/
%%{
machine brainfuck;
write data;
include common "common.rl";
# Line counting machine
action brainfuck_ccallback {
switch(entity) {
case BRAINFUCK_SPACE:
ls
break;
case BRAINFUCK_OPERATOR:
code
break;
case BRAINFUCK_COMMENT:
comment
break;
case INTERNAL_NL:
std_internal_newline(BRAINFUCK_LANG)
break;
case NEWLINE:
std_newline(BRAINFUCK_LANG)
}
}
brainfuck_operator = [+\-<>.,\[\]] @code;
brainfuck_line := |*
spaces ${ entity = BRAINFUCK_SPACE; } => brainfuck_ccallback;
newline ${ entity = NEWLINE; } => brainfuck_ccallback;
brainfuck_operator ${ entity = BRAINFUCK_OPERATOR; } => brainfuck_ccallback;
^space ${ entity = BRAINFUCK_COMMENT; } => brainfuck_ccallback;
*|;
# Entity machine
action brainfuck_ecallback {
callback(BRAINFUCK_LANG, brainfuck_entities[entity], cint(ts), cint(te), userdata);
}
brainfuck_operator_entity = [+\-<>.,\[\]];
brainfuck_comment_entity = !(space | brainfuck_operator_entity);
brainfuck_entity := |*
space+ ${ entity = BRAINFUCK_SPACE; } => brainfuck_ecallback;
brainfuck_operator_entity ${ entity = BRAINFUCK_OPERATOR; } => brainfuck_ecallback;
brainfuck_comment_entity ${ entity = BRAINFUCK_COMMENT; } => brainfuck_ecallback;
*|;
}%%
/************************* Required for every parser *************************/
/* Parses a string buffer with Brainfuck code.
*
* @param *buffer The string to parse.
* @param length The length of the string to parse.
* @param count Integer flag specifying whether or not to count lines. If yes,
* uses the Ragel machine optimized for counting. Otherwise uses the Ragel
* machine optimized for returning entity positions.
* @param *callback Callback function. If count is set, callback is called for
* every line of code, comment, or blank with 'lcode', 'lcomment', and
* 'lblank' respectively. Otherwise callback is called for each entity found.
*/
void parse_brainfuck(char *buffer, int length, int count,
void (*callback) (const char *lang, const char *entity, int s,
int e, void *udata),
void *userdata
) {
init
%% write init;
cs = (count) ? brainfuck_en_brainfuck_line : brainfuck_en_brainfuck_entity;
%% write exec;
// if no newline at EOF; callback contents of last line
if (count) { process_last_line(BRAINFUCK_LANG) }
}
#endif
/*****************************************************************************/