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