282 lines
11 KiB
Plaintext
282 lines
11 KiB
Plaintext
var types = [
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"LSB",
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"RSB",
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"LCB",
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"RCB",
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"COLON",
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"COMMA",
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"DOT",
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"REM",
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"GT",
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"GTE",
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"LT",
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"LTE",
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"EQ",
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"NEQ",
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"LIKE",
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"NLIKE",
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"AND",
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"OR",
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"NOT",
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"ADDRESS",
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"TIME",
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"TIMEDIFF",
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"INTEGER_LITERAL",
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"FLOAT_LITERAL",
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"BOOL_LITERAL",
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"ID"
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];
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var errors = {
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"-2": "not found close quote or singleQuote",
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"-1": "not found any lexemes or errors or anything else",
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"0": "success",
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"1": "found unknown symbol"
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};
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var Lexer = function(_string){
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this._last_found_lexeme = {error: -1};
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this._end = false;
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this._error = false;
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this._string = _string;
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this._state = 1;
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this._yy_char = null;
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this._yy_lex_start = 0;
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this._yy_cursor = 0;
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this._yy_marker = 0;
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this._yy_accept = 0;
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};
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Lexer.prototype = {
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types: types,
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errors: errors,
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_notFoundCloseQuote: function() {
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this._error = true;
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this._last_found_lexeme = {
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error: 2,
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start: this._yy_lex_start,
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end: this._yy_cursor
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};
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console.log( print_f("Not found close quote start: %s", this._yy_cursor));
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},
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_unknownSymbol: function(){
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this._error = true;
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this._last_found_lexeme = {
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error: 1,
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start: this._yy_lex_start,
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end: this._yy_cursor
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};
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console.log( print_f("Found unknown symbol on position: %s", this._yy_cursor));
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},
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_foundLexeme: function(_lexeme) {
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console.log(print_f("found lex: %s; start: %s; end: %s; result => %s", _lexeme, this._yy_lex_start, this._yy_cursor, this._string.substring(this._yy_lex_start, this._yy_cursor)));
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this._last_found_lexeme = {
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error: 0,
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lexeme: _lexeme,
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start: this._yy_lex_start,
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end: this._yy_cursor
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};
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},
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_endOfString: function(){
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console.log(print_f("search end\n"));
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this._end = true;
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this._last_found_lexeme = {
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error: -2
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};
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},
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_searchString: function () {
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var _quote = this._string[this._yy_cursor - 1];
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var found_back_slash = false;
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while(this._yy_cursor < this._string.length){
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this._yy_char = this._string[this._yy_cursor];
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if(_quote == '"') {
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switch (this._yy_char) {
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case "\\":
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found_back_slash = true;
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break;
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case '"':
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if(!found_back_slash) {
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this._yy_cursor++;
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this._foundLexeme("STRING_LITERAL");
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return;
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}
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found_back_slash = false;
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break;
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}
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} else if(_quote == "'") {
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switch (this._yy_char) {
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case "\\":
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found_back_slash = true;
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break;
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case "'":
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if(!found_back_slash) {
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this._yy_cursor++;
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this._foundLexeme("STRING_LITERAL");
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return;
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}
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found_back_slash = false;
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break;
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}
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}
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this._yy_cursor++;
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}
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this._notFoundCloseQuote();
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},
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_set_next: function(){
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this._yy_accept = 0;
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this._state = 1;
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this._yy_lex_start = this._yy_cursor;
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this._yy_marker = this._yy_cursor;
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},
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next: function(){
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if(this._end || this._error) return null;
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this.search();
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return this.token();
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},
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token: function(){
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return this._last_found_lexeme;
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},
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search: function(){
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if(this._end) return false;
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while(true){
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switch(id) /*!re2c
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re2c:define:YYCTYPE = _r2c_var_;
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re2c:define:YYCURSOR = this._yy_cursor;
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re2c:define:YYMARKER = this._yy_marker;
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re2c:yyfill:enable = 0;
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D = [0-9];
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end = "\x00";
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L = [A-Za-z_];
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RL = [\U00000400-\U00000451];
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CR = "\r";
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LF = "\n";
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CRLF = CR?LF;
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INTEGER = "-"?D+;
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SP = " ";
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TAB = "\t";
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DELIM = SP|TAB|CR|LF;
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LSB = "[";
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RSB = "]";
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LCB = "(";
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RCB = ")";
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COLON = ":";
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COMMA = ",";
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DOT = ".";
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REM = "%";
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GT = ">";
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GTE = ">=";
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LT = "<";
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LTE = "<=";
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EQ = "==";
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NEQ = "!=";
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AND = 'AND';
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OR = 'OR';
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NOT = 'NOT';
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LIKE = 'LIKE';
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NLIKE = 'NLIKE';
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ADDRESS = "Address";
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TIME = "Time";
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TIMEDIFF = "TimeDiff";
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BOOL_LITERAL = 'true'|'false';
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FLOAT_LITERAL = "-"? D* "." D+ ("e" "-"? D+)?;
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INTEGER_LITERAL = INTEGER;
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ID = L(L|D)*;
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QU = "\"";
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SQU = "'";
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end { this._endOfString(); return; }
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LSB { this._foundLexeme("LSB"); this._set_next(); return; }
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RSB { this._foundLexeme("RSB"); this._set_next(); return; }
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LCB { this._foundLexeme("LCB"); this._set_next(); return; }
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RCB { this._foundLexeme("RCB"); this._set_next(); return; }
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COLON { this._foundLexeme("COLON"); this._set_next(); return; }
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COMMA { this._foundLexeme("COMMA"); this._set_next(); return; }
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DOT { this._foundLexeme("DOT"); this._set_next(); return; }
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REM { this._foundLexeme("REM"); this._set_next(); return; }
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GT { this._foundLexeme("GT"); this._set_next(); return; }
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GTE { this._foundLexeme("GTE"); this._set_next(); return; }
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LT { this._foundLexeme("LT"); this._set_next(); return; }
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LTE { this._foundLexeme("LTE"); this._set_next(); return; }
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EQ { this._foundLexeme("EQ"); this._set_next(); return; }
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NEQ { this._foundLexeme("NEQ"); this._set_next(); return; }
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LIKE { this._foundLexeme("LIKE"); this._set_next(); return; }
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NLIKE { this._foundLexeme("NLIKE"); this._set_next(); return; }
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AND { this._foundLexeme("AND"); this._set_next(); return; }
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OR { this._foundLexeme("OR"); this._set_next(); return; }
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NOT { this._foundLexeme("NOT"); this._set_next(); return; }
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ADDRESS { this._foundLexeme("ADDRESS"); this._set_next(); return; }
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TIME { this._foundLexeme("TIME"); this._set_next(); return; }
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TIMEDIFF { this._foundLexeme("TIMEDIFF"); this._set_next(); return; }
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INTEGER_LITERAL { this._foundLexeme("INTEGER_LITERAL"); this._set_next(); return; }
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FLOAT_LITERAL { this._foundLexeme("FLOAT_LITERAL"); this._set_next(); return; }
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BOOL_LITERAL { this._foundLexeme("BOOL_LITERAL"); this._set_next(); return; }
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ID { this._foundLexeme("ID"); this._set_next(); return; }
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DELIM { this._set_next(); break; }
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QU|SQU { id = 100000000; break;}
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[^] { this._unknownSymbol(); this._set_next(); return; }
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*/ENDER}
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}
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};
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var print_f = function() {
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var r_str = "";
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var next = arguments[0];
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var rx = /(%[a-zA-Z]{1})/;
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var a = 1,
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match;
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while (match = rx.exec(next)) {
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var prev = next.substring(0, match.index);
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var macro = next.substring(match.index + 1, match.index + 2);
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next = next.substring(match.index + 2, next.length);
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r_str += prev;
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var arg = arguments[a];
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if (arg !== undefined) {
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switch (macro) {
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case "s":
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r_str += arg.toString();
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break;
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case "i":
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r_str += parseInt(arg);
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break;
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case "f":
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r_str += parseFloat(arg);
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break;
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}
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} else {
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r_str += "%" + macro;
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}
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a++;
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}
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r_str += next;
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return r_str;
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}; |