/************************* Required for every parser *************************/
#ifndef OHCOUNT_NIX_PARSER_H
#define OHCOUNT_NIX_PARSER_H
#include "../parser_macros.h"
// the name of the language
const char *NIX_LANG = LANG_NIX;
// the languages entities
const char *nix_entities[] = {
"space", "comment", "any"
};
// constants associated with the entities
enum {
NIX_SPACE = 0, NIX_COMMENT, NIX_ANY
};
/*****************************************************************************/
#include "shell.h"
%%{
machine nix;
write data;
include common "common.rl";
#EMBED(shell)
# Line counting machine
action nix_ccallback {
switch(entity) {
case NIX_SPACE:
ls
break;
case NIX_ANY:
code
break;
case INTERNAL_NL:
std_internal_newline(NIX_LANG)
break;
case NEWLINE:
std_newline(NIX_LANG)
break;
case CHECK_BLANK_ENTRY:
check_blank_entry(NIX_LANG)
}
}
nix_line_comment = '#' @comment nonnewline*;
nix_block_comment =
'/*' @comment (
newline %{ entity = INTERNAL_NL; } %nix_ccallback
|
ws
|
(nonnewline - ws) @comment
)* :>> '*/';
nix_comment = nix_line_comment | nix_block_comment;
nix_dq_shell_entry = '"' @code;
nix_dq_shell_outry = '"' @check_blank_outry @code;
nix_dq_shell_line := |*
nix_dq_shell_outry @{ p = ts; fret; };
# TODO: Add embeded Nix between '${' and '}'
# unmodified SHELL patterns
spaces ${ entity = SHELL_SPACE; } => shell_ccallback;
shell_comment;
shell_string;
newline ${ entity = NEWLINE; } => shell_ccallback;
^space ${ entity = SHELL_ANY; } => shell_ccallback;
*|;
nix_dsq_shell_entry = "''" @code;
nix_dsq_shell_outry = "''" @check_blank_outry @code;
nix_dsq_shell_line := |*
nix_dsq_shell_outry @{ p = ts; fret; };
# TODO: Add embeded Nix between '${' and '}'
# unmodified SHELL patterns
spaces ${ entity = SHELL_SPACE; } => shell_ccallback;
shell_comment;
shell_string;
newline ${ entity = NEWLINE; } => shell_ccallback;
^space ${ entity = SHELL_ANY; } => shell_ccallback;
*|;
nix_line := |*
nix_dq_shell_entry @{ entity = CHECK_BLANK_ENTRY; } @nix_ccallback
@{ saw(SHELL_LANG); } => { fcall nix_dq_shell_line; };
nix_dsq_shell_entry @{ entity = CHECK_BLANK_ENTRY; } @nix_ccallback
@{ saw(SHELL_LANG); } => { fcall nix_dsq_shell_line; };
# NIX patterns
spaces ${ entity = NIX_SPACE; } => nix_ccallback;
nix_comment;
newline ${ entity = NEWLINE; } => nix_ccallback;
^space ${ entity = NIX_ANY; } => nix_ccallback;
*|;
# Entity machine
action nix_ecallback {
callback(NIX_LANG, nix_entities[entity], cint(ts), cint(te), userdata);
}
nix_line_comment_entity = '#' nonnewline*;
nix_block_comment_entity = '/*' any* :>> '*/';
nix_comment_entity = nix_line_comment_entity | nix_block_comment_entity;
nix_dq_shell_entry_entity = '"';
nix_dq_shell_outry_entity = '"';
nix_dq_shell_entity := |*
nix_dq_shell_outry_entity @{ fret; };
# TODO: Add embeded Nix between '${' and '}'
# unmodified SHELL patterns
space+ ${ entity = SHELL_SPACE; } => shell_ecallback;
shell_comment_entity ${ entity = SHELL_COMMENT; } => shell_ecallback;
# TODO:
^space;
*|;
nix_dsq_shell_entry_entity = "''";
nix_dsq_shell_outry_entity = "''";
nix_dsq_shell_entity := |*
nix_dsq_shell_outry_entity @{ fret; };
# TODO: Add embeded Nix between '${' and '}'
# unmodified SHELL patterns
space+ ${ entity = SHELL_SPACE; } => shell_ecallback;
shell_comment_entity ${ entity = SHELL_COMMENT; } => shell_ecallback;
# TODO:
^space;
*|;
nix_entity := |*
nix_dq_shell_entry_entity => { fcall nix_dq_shell_entity; };
nix_dsq_shell_entry_entity => { fcall nix_dsq_shell_entity; };
space+ ${ entity = NIX_SPACE; } => nix_ecallback;
nix_comment_entity ${ entity = NIX_COMMENT; } => nix_ecallback;
# TODO;
^space;
*|;
}%%
/************************* Required for every parser *************************/
/* Parses a string buffer with Nix 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_nix(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) ? nix_en_nix_line : nix_en_nix_entity;
%% write exec;
// if no newline at EOF; callback contents of last line
if (count) { process_last_line(NIX_LANG) }
}
#endif
/*****************************************************************************/