// smalltalk.rl written by Mitchell Foral. mitchell<att>caladbolg<dott>net
/************************* Required for every parser *************************/
#ifndef OHCOUNT_SMALLTALK_PARSER_H
#define OHCOUNT_SMALLTALK_PARSER_H
#include "../parser_macros.h"
// the name of the language
const char *SMALLTALK_LANG = LANG_SMALLTALK;
// the languages entities
const char *smalltalk_entities[] = {
"space", "comment", "string", "any"
};
// constants associated with the entities
enum {
SMALLTALK_SPACE = 0, SMALLTALK_COMMENT, SMALLTALK_STRING, SMALLTALK_ANY
};
/*****************************************************************************/
%%{
machine smalltalk;
write data;
include common "common.rl";
# Line counting machine
action smalltalk_ccallback {
switch(entity) {
case SMALLTALK_SPACE:
ls
break;
case SMALLTALK_ANY:
code
break;
case INTERNAL_NL:
std_internal_newline(SMALLTALK_LANG)
break;
case NEWLINE:
std_newline(SMALLTALK_LANG)
}
}
smalltalk_comment =
'"' @comment (
newline %{ entity = INTERNAL_NL; } %smalltalk_ccallback
|
ws
|
[^\r\n\f\t "] @comment
)* '"';
smalltalk_string = '\'' @code [^\r\n\f']* '\'';
smalltalk_line := |*
spaces ${ entity = SMALLTALK_SPACE; } => smalltalk_ccallback;
smalltalk_comment;
smalltalk_string;
newline ${ entity = NEWLINE; } => smalltalk_ccallback;
^space ${ entity = SMALLTALK_ANY; } => smalltalk_ccallback;
*|;
# Entity machine
action smalltalk_ecallback {
callback(SMALLTALK_LANG, smalltalk_entities[entity], cint(ts), cint(te),
userdata);
}
smalltalk_comment_entity = '"' any* :>> '"';
smalltalk_entity := |*
space+ ${ entity = SMALLTALK_SPACE; } => smalltalk_ecallback;
smalltalk_comment_entity ${ entity = SMALLTALK_COMMENT; } => smalltalk_ecallback;
# TODO:
^space;
*|;
}%%
/************************* Required for every parser *************************/
/* Parses a string buffer with Smalltalk 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_smalltalk(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) ? smalltalk_en_smalltalk_line : smalltalk_en_smalltalk_entity;
%% write exec;
// if no newline at EOF; callback contents of last line
if (count) { process_last_line(SMALLTALK_LANG) }
}
#endif
/*****************************************************************************/