// lisp.rl written by Mitchell Foral. mitchell<att>caladbolg<dott>net.
/************************* Required for every parser *************************/
#ifndef OHCOUNT_LISP_PARSER_H
#define OHCOUNT_LISP_PARSER_H
#include "../parser_macros.h"
// the name of the language
const char *LISP_LANG = LANG_LISP;
// the languages entities
const char *lisp_entities[] = {
"space", "comment", "string", "any"
};
// constants associated with the entities
enum {
LISP_SPACE = 0, LISP_COMMENT, LISP_STRING, LISP_ANY
};
/*****************************************************************************/
%%{
machine lisp;
write data;
include common "common.rl";
# Line counting machine
action lisp_ccallback {
switch(entity) {
case LISP_SPACE:
ls
break;
case LISP_ANY:
code
break;
case INTERNAL_NL:
std_internal_newline(LISP_LANG)
break;
case NEWLINE:
std_newline(LISP_LANG)
}
}
lisp_docstring = '"'{3} @comment (
newline %{ entity = INTERNAL_NL; } %lisp_ccallback
|
ws
|
(nonnewline - ws) @comment
)* :>> '"""' @comment;
lisp_line_comment = ';' @comment nonnewline*;
lisp_comment = lisp_line_comment | lisp_docstring;
lisp_empty_string =
'"'{2} [^"] @{fhold;} @code;
lisp_char_string =
'"' [^"] '"' @code;
lisp_regular_string =
'"' ([^"]{2}) @code (
newline %{ entity = INTERNAL_NL; } %lisp_ccallback
|
ws
|
[^\r\n\f\t "\\] @code
|
'\\' nonnewline @code
)* '"';
lisp_string = lisp_empty_string | lisp_char_string | lisp_regular_string;
lisp_line := |*
spaces ${ entity = LISP_SPACE; } => lisp_ccallback;
lisp_comment;
lisp_string;
newline ${ entity = NEWLINE; } => lisp_ccallback;
^space ${ entity = LISP_ANY; } => lisp_ccallback;
*|;
# Entity machine
action lisp_ecallback {
callback(LISP_LANG, lisp_entities[entity], cint(ts), cint(te), userdata);
}
lisp_comment_entity = ';' nonnewline*;
lisp_entity := |*
space+ ${ entity = LISP_SPACE; } => lisp_ecallback;
lisp_comment_entity ${ entity = LISP_COMMENT; } => lisp_ecallback;
# TODO:
^space;
*|;
}%%
/* Parses a string buffer with Lisp 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_lisp(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) ? lisp_en_lisp_line : lisp_en_lisp_entity;
%% write exec;
// if no newline at EOF; callback contents of last line
if (count) { process_last_line(LISP_LANG) }
}
const char *ELISP_LANG = LANG_EMACSLISP;
const char *ORIG_LISP_LANG = LANG_LISP;
void parse_emacslisp(char *buffer, int length, int count,
void (*callback) (const char *lang, const char *entity,
int s, int e, void *udata),
void *userdata
) {
LISP_LANG = ELISP_LANG;
parse_lisp(buffer, length, count, callback, userdata);
LISP_LANG = ORIG_LISP_LANG;
}
const char *SCHEME_LANG = LANG_SCHEME;
void parse_scheme(char *buffer, int length, int count,
void (*callback) (const char *lang, const char *entity, int s,
int e, void *udata),
void *userdata
) {
LISP_LANG = SCHEME_LANG;
parse_lisp(buffer, length, count, callback, userdata);
LISP_LANG = ORIG_LISP_LANG;
}
const char *CLOJURE_LANG = LANG_CLOJURE;
void parse_clojure(char *buffer, int length, int count,
void (*callback) (const char *lang, const char *entity, int s,
int e, void *udata),
void *userdata
) {
LISP_LANG = CLOJURE_LANG;
parse_lisp(buffer, length, count, callback, userdata);
LISP_LANG = ORIG_LISP_LANG;
}
const char *RACKET_LANG = LANG_RACKET;
void parse_racket(char *buffer, int length, int count,
void (*callback) (const char *lang, const char *entity, int s,
int e, void *udata),
void *userdata
) {
LISP_LANG = RACKET_LANG;
parse_lisp(buffer, length, count, callback, userdata);
LISP_LANG = ORIG_LISP_LANG;
}
#endif