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import {
Ident,
LeftParenthesis,
RightParenthesis
} from '../../tokenizer/index.js';
export const name = 'Scope';
export const structure = {
root: ['SelectorList', 'Raw', null],
limit: ['SelectorList', 'Raw', null]
};
export function parse() {
let root = null;
let limit = null;
this.skipSC();
const startOffset = this.tokenStart;
if (this.tokenType === LeftParenthesis) {
this.next();
this.skipSC();
root = this.parseWithFallback(
this.SelectorList,
() => this.Raw(false, true)
);
this.skipSC();
this.eat(RightParenthesis);
}
if (this.lookupNonWSType(0) === Ident) {
this.skipSC();
this.eatIdent('to');
this.skipSC();
this.eat(LeftParenthesis);
this.skipSC();
limit = this.parseWithFallback(
this.SelectorList,
() => this.Raw(false, true)
);
this.skipSC();
this.eat(RightParenthesis);
}
return {
type: 'Scope',
loc: this.getLocation(startOffset, this.tokenStart),
root,
limit
};
}
export function generate(node) {
if (node.root) {
this.token(LeftParenthesis, '(');
this.node(node.root);
this.token(RightParenthesis, ')');
}
if (node.limit) {
this.token(Ident, 'to');
this.token(LeftParenthesis, '(');
this.node(node.limit);
this.token(RightParenthesis, ')');
}
}
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