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