1 // visual_basic.rl written by Mitchell Foral. mitchell<att>caladbolg<dott>net.
3 /************************* Required for every parser *************************/
4 #ifndef OHCOUNT_VISUAL_BASIC_PARSER_H
5 #define OHCOUNT_VISUAL_BASIC_PARSER_H
7 #include "../parser_macros.h"
9 // the name of the language
10 const char *VB_LANG = LANG_VISUALBASIC;
12 // the languages entities
13 const char *vb_entities[] = {
14 "space", "comment", "string", "any"
17 // constants associated with the entities
19 VB_SPACE = 0, VB_COMMENT, VB_STRING, VB_ANY,
22 /*****************************************************************************/
27 include common "common.rl";
29 # Line counting machine
40 std_internal_newline(VB_LANG)
47 vb_comment = ('\'' | /rem/i) @comment nonnewline*;
49 vb_string = '"' @code ([^\r\n\f"\\] | '\\' nonnewline)* '"';
52 spaces ${ entity = VB_SPACE; } => vb_ccallback;
55 newline ${ entity = NEWLINE; } => vb_ccallback;
56 ^space ${ entity = VB_ANY; } => vb_ccallback;
62 callback(VB_LANG, vb_entities[entity], cint(ts), cint(te), userdata);
65 vb_comment_entity = ('\'' | /rem/i) nonnewline*;
68 space+ ${ entity = VB_SPACE; } => vb_ecallback;
69 vb_comment_entity ${ entity = VB_COMMENT; } => vb_ecallback;
75 /************************* Required for every parser *************************/
77 /* Parses a string buffer with Visual Basic code.
79 * @param *buffer The string to parse.
80 * @param length The length of the string to parse.
81 * @param count Integer flag specifying whether or not to count lines. If yes,
82 * uses the Ragel machine optimized for counting. Otherwise uses the Ragel
83 * machine optimized for returning entity positions.
84 * @param *callback Callback function. If count is set, callback is called for
85 * every line of code, comment, or blank with 'lcode', 'lcomment', and
86 * 'lblank' respectively. Otherwise callback is called for each entity found.
88 void parse_visual_basic(char *buffer, int length, int count,
89 void (*callback) (const char *lang, const char *entity,
90 int s, int e, void *udata),
96 cs = (count) ? visual_basic_en_vb_line : visual_basic_en_vb_entity;
99 // if no newline at EOF; callback contents of last line
100 if (count) { process_last_line(VB_LANG) }
105 /*****************************************************************************/