// blitzmax.rl written by Bruce A Henderson (http://brucey.net)
/************************* Required for every parser *************************/
#ifndef OHCOUNT_BLITZMAX_PARSER_H
#define OHCOUNT_BLITZMAX_PARSER_H
#include "../parser_macros.h"
// the name of the language
const char *BLITZMAX_LANG = LANG_BLITZMAX;
// the languages entities
const char *blitzmax_entities[] = {
"space", "comment", "string", "any"
};
// constants associated with the entities
enum {
BLITZMAX_SPACE = 0, BLITZMAX_COMMENT, BLITZMAX_STRING, BLITZMAX_ANY
};
/*****************************************************************************/
%%{
machine blitzmax;
write data;
include common "common.rl";
# Line counting machine
action blitzmax_ccallback {
switch(entity) {
case BLITZMAX_SPACE:
ls
break;
case BLITZMAX_ANY:
code
break;
case INTERNAL_NL:
std_internal_newline(BLITZMAX_LANG)
break;
case NEWLINE:
std_newline(BLITZMAX_LANG)
}
}
blitzmax_line_comment = '\'' @comment nonnewline*;
blitzmax_rem_block_comment =
/rem/i @comment (
newline %{ entity = INTERNAL_NL; } %blitzmax_ccallback
|
ws
|
(nonnewline - ws) @comment
)* :>> (/end rem/i | /endrem/i);
blitzmax_comment = blitzmax_line_comment | blitzmax_rem_block_comment;
blitzmax_string = '"' @code ([^\r\n\f"\\] | '\\' nonnewline)* '"';
blitzmax_line := |*
spaces ${ entity = BLITZMAX_SPACE; } => blitzmax_ccallback;
blitzmax_comment;
blitzmax_string;
newline ${ entity = NEWLINE; } => blitzmax_ccallback;
^space ${ entity = BLITZMAX_ANY; } => blitzmax_ccallback;
*|;
# Entity machine
action blitzmax_ecallback {
callback(BLITZMAX_LANG, blitzmax_entities[entity], cint(ts), cint(te),
userdata);
}
blitzmax_line_comment_entity = '\'' nonnewline*;
blitzmax_rem_block_comment_entity =
/rem/i (
newline %{ entity = INTERNAL_NL; } %blitzmax_ecallback
|
ws
|
(nonnewline - ws)
)* :>> (/end rem/i | /endrem/i);
blitzmax_comment_entity = blitzmax_line_comment_entity | blitzmax_line_comment_entity;
blitzmax_entity := |*
space+ ${ entity = BLITZMAX_SPACE; } => blitzmax_ecallback;
blitzmax_comment_entity ${ entity = BLITZMAX_COMMENT; } => blitzmax_ecallback;
# TODO:
^space;
*|;
}%%
/************************* Required for every parser *************************/
/* Parses a string buffer with BlitzMax 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_blitzmax(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) ? blitzmax_en_blitzmax_line : blitzmax_en_blitzmax_entity;
%% write exec;
// if no newline at EOF; callback contents of last line
if (count) { process_last_line(BLITZMAX_LANG) }
}
#endif
/*****************************************************************************/