// dylan.rl written by Mitchell Foral. mitchell<att>caladbolg<dott>net
/************************* Required for every parser *************************/
#ifndef OHCOUNT_DYLAN_PARSER_H
#define OHCOUNT_DYLAN_PARSER_H
#include "../parser_macros.h"
// the name of the language
const char *DYLAN_LANG = LANG_DYLAN;
// the languages entities
const char *dylan_entities[] = {
"space", "comment", "string", "any"
};
// constants associated with the entities
enum {
DYLAN_SPACE = 0, DYLAN_COMMENT, DYLAN_STRING, DYLAN_ANY
};
/*****************************************************************************/
%%{
machine dylan;
write data;
include common "common.rl";
# Line counting machine
action dylan_ccallback {
switch(entity) {
case DYLAN_SPACE:
ls
break;
case DYLAN_ANY:
code
break;
case INTERNAL_NL:
std_internal_newline(DYLAN_LANG)
break;
case NEWLINE:
std_newline(DYLAN_LANG)
}
}
dylan_line_comment = '//' @comment nonnewline*;
dylan_block_comment =
'/*' @comment (
newline %{ entity = INTERNAL_NL; } %dylan_ccallback
|
ws
|
(nonnewline - ws) @comment
)* :>> '*/';
dylan_comment = dylan_line_comment | dylan_block_comment;
dylan_char = '\'' @code ([^\r\n\f'\\] | '\\' nonnewline) '\'';
dylan_dq_str = '"' @code ([^\r\n\f"\\] | '\\' nonnewline)* '"';
dylan_string = dylan_char | dylan_dq_str;
dylan_line := |*
spaces ${ entity = DYLAN_SPACE; } => dylan_ccallback;
dylan_comment;
dylan_string;
newline ${ entity = NEWLINE; } => dylan_ccallback;
^space ${ entity = DYLAN_ANY; } => dylan_ccallback;
*|;
# Entity machine
action dylan_ecallback {
callback(DYLAN_LANG, dylan_entities[entity], cint(ts), cint(te), userdata);
}
dylan_line_comment_entity = '//' nonnewline*;
dylan_block_comment_entity = '/*' any* :>> '*/';
dylan_comment_entity = dylan_line_comment_entity | dylan_block_comment_entity;
dylan_entity := |*
space+ ${ entity = DYLAN_SPACE; } => dylan_ecallback;
dylan_comment_entity ${ entity = DYLAN_COMMENT; } => dylan_ecallback;
# TODO:
^space;
*|;
}%%
/************************* Required for every parser *************************/
/* Parses a string buffer with Dylan 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_dylan(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) ? dylan_en_dylan_line : dylan_en_dylan_entity;
%% write exec;
// if no newline at EOF; callback contents of last line
if (count) { process_last_line(DYLAN_LANG) }
}
#endif
/*****************************************************************************/