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/************************* Required for every parser *************************/
#ifndef OHCOUNT_PS_PARSER_H
#define OHCOUNT_PS_PARSER_H
#include "../parser_macros.h"
// the name of the language
const char *POSTSCRIPT_LANG = LANG_POSTSCRIPT;
// the languages entities
const char *postscript_entities[] = {
"space", "comment", "string", "any"
};
// constants associated with the entities
enum {
POSTSCRIPT_SPACE = 0, POSTSCRIPT_COMMENT, POSTSCRIPT_STRING, POSTSCRIPT_ANY
};
/*****************************************************************************/
%%{
machine postscript;
write data;
include common "common.rl";
# Line counting
action postscript_ccallback {
switch(entity) {
case POSTSCRIPT_SPACE:
ls
break;
case POSTSCRIPT_ANY:
code
break;
case INTERNAL_NL:
std_internal_newline(POSTSCRIPT_LANG)
break;
case NEWLINE:
std_newline(POSTSCRIPT_LANG)
}
}
postscript_comment = '%' @comment nonnewline*;
postscript_string = '(' @code ([^\r\n\f])* ')';
postscript_line := |*
spaces ${ entity = POSTSCRIPT_SPACE; } => postscript_ccallback;
postscript_comment;
postscript_string;
newline ${ entity = NEWLINE; } => postscript_ccallback;
^space ${ entity = POSTSCRIPT_ANY; } => postscript_ccallback;
*|;
# Entity Machine
action postscript_ecallback {
callback(POSTSCRIPT_LANG, postscript_entities[entity], cint(ts), cint(te),
userdata);
}
postscript_comment_entity = '%' nonnewline*;
postscript_entity := |*
space+ ${ entity = POSTSCRIPT_SPACE; } => postscript_ecallback;
postscript_comment_entity ${ entity = POSTSCRIPT_COMMENT; } => postscript_ecallback;
# TODO:
^space;
*|;
}%%
/************************* Required for every parser *************************/
/* Parses a string buffer with PostScript 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_postscript(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) ? postscript_en_postscript_line : postscript_en_postscript_entity;
%% write exec;
// if no newline at EOF; callback contents of last line
if (count) { process_last_line(POSTSCRIPT_LANG) }
}
#endif
/*****************************************************************************/
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