Method _parseTupleAtom

server/src/parser/parser.ts:1876–1901

()

    // ('(' [yield_expr | testlist_comp] ')'
    // testlist_comp: (test | star_expr) (comp_for | (',' (test | star_expr))* [','])
    private _parseTupleAtom(): ExpressionNode {
        let startParen = this._getNextToken();
        assert.equal(startParen.type, TokenType.OpenParenthesis);

        let yieldExpr = this._tryParseYieldExpression();
        if (yieldExpr) {
            if (this._peekTokenType() !== TokenType.CloseParenthesis) {
                return this._handleExpressionParseError('Expected ")"');
            } else {
                yieldExpr.extend(this._getNextToken());
            }

            return yieldExpr;
        }

        let exprListResult = this._parseTestListWithComprehension();
        let tupleOrExpression = this._makeExpressionOrTuple(exprListResult);

        if (this._peekTokenType() !== TokenType.CloseParenthesis) {
            return this._handleExpressionParseError('Expected ")"');
        } else {
            tupleOrExpression.extend(this._getNextToken());
        }

        return tupleOrExpression;
    }

    // '[' [testlist_comp] ']'
    // testlist_comp: (test | star_expr) (comp_for | (',' (test | star_expr))* [','])