Method _parseList

source/python.js:1513–1543

()

                return generators;
            }
            _parseList() {
                const elts = [];
                this._tokenizer.expect('[');
                if (!this._tokenizer.match(']')) {
                    const position = this._position();
                    const expr = this._parseExpression(-1, ['for']);
                    if (this._tokenizer.match('id', 'for')) {
                        const generators = this._parseGenerators();
                        this._tokenizer.expect(']');
                        const node = new ast.ListComp(expr, generators);
                        this._mark(node, position);
                        return node;
                    }
                    if (expr === null) {
                        throw new python.Error(`Expected expression ${this._location()}`);
                    }
                    elts.push(expr);
                    while (this._tokenizer.accept(',')) {
                        if (this._tokenizer.match(']')) {
                            break;
                        }
                        const expr = this._parseExpression(-1, ['for']);
                        if (!expr) {
                            throw new python.Error(`Expected expression ${this._location()}`);
                        }
                        elts.push(expr);
                    }
                }
                this._tokenizer.expect(']');
                return new ast.List(elts);
            }
            _parseSlice() {
                const elts = [];
                let slice = [null, null, null];