lepu-test-platform-web/node_modules/css-tree/lib/syntax/node/Raw.js

88 lines
2.4 KiB
JavaScript

var tokenizer = require('../../tokenizer');
var TYPE = tokenizer.TYPE;
var WhiteSpace = TYPE.WhiteSpace;
var Semicolon = TYPE.Semicolon;
var LeftCurlyBracket = TYPE.LeftCurlyBracket;
var Delim = TYPE.Delim;
var EXCLAMATIONMARK = 0x0021; // U+0021 EXCLAMATION MARK (!)
function getOffsetExcludeWS() {
if (this.scanner.tokenIndex > 0) {
if (this.scanner.lookupType(-1) === WhiteSpace) {
return this.scanner.tokenIndex > 1
? this.scanner.getTokenStart(this.scanner.tokenIndex - 1)
: this.scanner.firstCharOffset;
}
}
return this.scanner.tokenStart;
}
// 0, 0, false
function balanceEnd() {
return 0;
}
// LEFTCURLYBRACKET, 0, false
function leftCurlyBracket(tokenType) {
return tokenType === LeftCurlyBracket ? 1 : 0;
}
// LEFTCURLYBRACKET, SEMICOLON, false
function leftCurlyBracketOrSemicolon(tokenType) {
return tokenType === LeftCurlyBracket || tokenType === Semicolon ? 1 : 0;
}
// EXCLAMATIONMARK, SEMICOLON, false
function exclamationMarkOrSemicolon(tokenType, source, offset) {
if (tokenType === Delim && source.charCodeAt(offset) === EXCLAMATIONMARK) {
return 1;
}
return tokenType === Semicolon ? 1 : 0;
}
// 0, SEMICOLON, true
function semicolonIncluded(tokenType) {
return tokenType === Semicolon ? 2 : 0;
}
module.exports = {
name: 'Raw',
structure: {
value: String
},
parse: function(startToken, mode, excludeWhiteSpace) {
var startOffset = this.scanner.getTokenStart(startToken);
var endOffset;
this.scanner.skip(
this.scanner.getRawLength(startToken, mode || balanceEnd)
);
if (excludeWhiteSpace && this.scanner.tokenStart > startOffset) {
endOffset = getOffsetExcludeWS.call(this);
} else {
endOffset = this.scanner.tokenStart;
}
return {
type: 'Raw',
loc: this.getLocation(startOffset, endOffset),
value: this.scanner.source.substring(startOffset, endOffset)
};
},
generate: function(node) {
this.chunk(node.value);
},
mode: {
default: balanceEnd,
leftCurlyBracket: leftCurlyBracket,
leftCurlyBracketOrSemicolon: leftCurlyBracketOrSemicolon,
exclamationMarkOrSemicolon: exclamationMarkOrSemicolon,
semicolonIncluded: semicolonIncluded
}
};