var cmpChar = require('../../tokenizer').cmpChar;
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var cmpStr = require('../../tokenizer').cmpStr;
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var TYPE = require('../../tokenizer').TYPE;
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var IDENT = TYPE.Ident;
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var STRING = TYPE.String;
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var NUMBER = TYPE.Number;
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var FUNCTION = TYPE.Function;
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var URL = TYPE.Url;
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var HASH = TYPE.Hash;
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var DIMENSION = TYPE.Dimension;
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var PERCENTAGE = TYPE.Percentage;
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var LEFTPARENTHESIS = TYPE.LeftParenthesis;
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var LEFTSQUAREBRACKET = TYPE.LeftSquareBracket;
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var COMMA = TYPE.Comma;
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var DELIM = TYPE.Delim;
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var NUMBERSIGN = 0x0023; // U+0023 NUMBER SIGN (#)
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var ASTERISK = 0x002A; // U+002A ASTERISK (*)
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var PLUSSIGN = 0x002B; // U+002B PLUS SIGN (+)
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var HYPHENMINUS = 0x002D; // U+002D HYPHEN-MINUS (-)
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var SOLIDUS = 0x002F; // U+002F SOLIDUS (/)
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var U = 0x0075; // U+0075 LATIN SMALL LETTER U (u)
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module.exports = function defaultRecognizer(context) {
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switch (this.scanner.tokenType) {
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case HASH:
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return this.Hash();
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case COMMA:
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context.space = null;
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context.ignoreWSAfter = true;
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return this.Operator();
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case LEFTPARENTHESIS:
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return this.Parentheses(this.readSequence, context.recognizer);
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case LEFTSQUAREBRACKET:
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return this.Brackets(this.readSequence, context.recognizer);
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case STRING:
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return this.String();
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case DIMENSION:
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return this.Dimension();
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case PERCENTAGE:
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return this.Percentage();
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case NUMBER:
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return this.Number();
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case FUNCTION:
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return cmpStr(this.scanner.source, this.scanner.tokenStart, this.scanner.tokenEnd, 'url(')
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? this.Url()
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: this.Function(this.readSequence, context.recognizer);
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case URL:
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return this.Url();
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case IDENT:
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// check for unicode range, it should start with u+ or U+
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if (cmpChar(this.scanner.source, this.scanner.tokenStart, U) &&
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cmpChar(this.scanner.source, this.scanner.tokenStart + 1, PLUSSIGN)) {
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return this.UnicodeRange();
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} else {
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return this.Identifier();
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}
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case DELIM:
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var code = this.scanner.source.charCodeAt(this.scanner.tokenStart);
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if (code === SOLIDUS ||
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code === ASTERISK ||
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code === PLUSSIGN ||
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code === HYPHENMINUS) {
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return this.Operator(); // TODO: replace with Delim
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}
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// TODO: produce a node with Delim node type
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if (code === NUMBERSIGN) {
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this.error('Hex or identifier is expected', this.scanner.tokenStart + 1);
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}
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break;
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}
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};
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