var TYPE = require('../../tokenizer').TYPE;
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var rawMode = require('./Raw').mode;
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var WHITESPACE = TYPE.WhiteSpace;
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var COMMENT = TYPE.Comment;
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var SEMICOLON = TYPE.Semicolon;
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var ATKEYWORD = TYPE.AtKeyword;
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var LEFTCURLYBRACKET = TYPE.LeftCurlyBracket;
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var RIGHTCURLYBRACKET = TYPE.RightCurlyBracket;
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function consumeRaw(startToken) {
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return this.Raw(startToken, null, true);
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}
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function consumeRule() {
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return this.parseWithFallback(this.Rule, consumeRaw);
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}
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function consumeRawDeclaration(startToken) {
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return this.Raw(startToken, rawMode.semicolonIncluded, true);
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}
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function consumeDeclaration() {
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if (this.scanner.tokenType === SEMICOLON) {
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return consumeRawDeclaration.call(this, this.scanner.tokenIndex);
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}
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var node = this.parseWithFallback(this.Declaration, consumeRawDeclaration);
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if (this.scanner.tokenType === SEMICOLON) {
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this.scanner.next();
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}
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return node;
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}
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module.exports = {
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name: 'Block',
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structure: {
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children: [[
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'Atrule',
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'Rule',
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'Declaration'
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]]
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},
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parse: function(isDeclaration) {
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var consumer = isDeclaration ? consumeDeclaration : consumeRule;
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var start = this.scanner.tokenStart;
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var children = this.createList();
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this.eat(LEFTCURLYBRACKET);
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scan:
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while (!this.scanner.eof) {
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switch (this.scanner.tokenType) {
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case RIGHTCURLYBRACKET:
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break scan;
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case WHITESPACE:
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case COMMENT:
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this.scanner.next();
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break;
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case ATKEYWORD:
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children.push(this.parseWithFallback(this.Atrule, consumeRaw));
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break;
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default:
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children.push(consumer.call(this));
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}
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}
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if (!this.scanner.eof) {
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this.eat(RIGHTCURLYBRACKET);
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}
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return {
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type: 'Block',
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loc: this.getLocation(start, this.scanner.tokenStart),
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children: children
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};
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},
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generate: function(node) {
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this.chunk('{');
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this.children(node, function(prev) {
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if (prev.type === 'Declaration') {
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this.chunk(';');
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}
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});
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this.chunk('}');
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},
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walkContext: 'block'
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};
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