// matlab.rl written by Mitchell Foral. mitchell<att>caladbolg<dott>net.
/************************* Required for every parser *************************/
#ifndef OHCOUNT_MATLAB_PARSER_H
#define OHCOUNT_MATLAB_PARSER_H
#include "../parser_macros.h"
// the name of the language
const char *MATLAB_LANG = LANG_MATLAB;
// the languages entities
const char *matlab_entities[] = {
"space", "comment", "string", "any",
};
// constants associated with the entities
enum {
MATLAB_SPACE = 0, MATLAB_COMMENT, MATLAB_STRING, MATLAB_ANY
};
/*****************************************************************************/
%%{
machine matlab;
write data;
include common "common.rl";
# Line counting machine
action matlab_ccallback {
switch(entity) {
case MATLAB_SPACE:
ls
break;
case MATLAB_ANY:
code
break;
case INTERNAL_NL:
std_internal_newline(MATLAB_LANG)
break;
case NEWLINE:
std_newline(MATLAB_LANG)
}
}
# Matlab(TM) comments also may begin with the line-continuing sequence ...
matlab_line_comment = (('%' | '...') [^{] @{ fhold; }) @comment nonnewline*;
matlab_block_comment =
'%{' @comment (
newline %{ entity = INTERNAL_NL; } %matlab_ccallback
|
ws
|
(nonnewline - ws) @code
)* :>> '%}';
matlab_comment = matlab_line_comment | matlab_block_comment;
# The detector is not smart enough to detect GNU Octave's double
# quotes around strings, so accept it here.
matlab_sq_str = '\'' @code ([^\r\n\f'\\] | '\\' nonnewline)* '\'';
matlab_dq_str = '"' @code ([^\r\n\f"\\] | '\\' nonnewline)* '"';
matlab_string = matlab_sq_str | matlab_dq_str;
matlab_line := |*
spaces ${ entity = MATLAB_SPACE; } => matlab_ccallback;
matlab_comment;
matlab_string;
newline ${ entity = NEWLINE; } => matlab_ccallback;
^space ${ entity = MATLAB_ANY; } => matlab_ccallback;
*|;
# Entity machine
action matlab_ecallback {
callback(MATLAB_LANG, matlab_entities[entity], cint(ts), cint(te),
userdata);
}
matlab_line_comment_entity = (('%' | '...') [^{] @{ fhold; }) nonnewline*;
matlab_block_comment_entity = '%{' any* :>> '%}';
matlab_comment_entity =
matlab_line_comment_entity | matlab_block_comment_entity;
matlab_entity := |*
space+ ${ entity = MATLAB_SPACE; } => matlab_ecallback;
matlab_comment_entity ${ entity = MATLAB_COMMENT; } => matlab_ecallback;
# TODO:
^space;
*|;
}%%
/************************* Required for every parser *************************/
/* Parses a string buffer with MATLAB 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_matlab(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) ? matlab_en_matlab_line : matlab_en_matlab_entity;
%% write exec;
// if no newline at EOF; callback contents of last line
if (count) { process_last_line(MATLAB_LANG) }
}
#endif
/*****************************************************************************/