Method _parseArgument

server/src/parser/parser.ts:1740–1777

()

    //             '**' test |
    //             '*' test )
    private _parseArgument(): ArgumentNode {
        let firstToken = this._peekToken();

        let argType = ArgumentCategory.Simple;
        if (this._consumeTokenIfOperator(OperatorType.Multiply)) {
            argType = ArgumentCategory.List;
        } else if (this._consumeTokenIfOperator(OperatorType.Power)) {
            argType = ArgumentCategory.Dictionary;
        }

        let valueExpr = this._parseTestExpression();
        let nameIdentifier: IdentifierToken | undefined;

        if (argType === ArgumentCategory.Simple) {
            if (this._consumeTokenIfOperator(OperatorType.Assign)) {
                let nameExpr = valueExpr;
                valueExpr = this._parseTestExpression();

                if (nameExpr instanceof NameNode) {
                    nameIdentifier = nameExpr.nameToken;
                } else {
                    this._addError('Expected parameter name', nameExpr);
                }
            } else {
                let listComp = this._tryParseListComprehension(valueExpr);
                if (listComp) {
                    valueExpr = listComp;
                }
            }
        }

        let argNode = new ArgumentNode(firstToken, valueExpr, argType);
        if (nameIdentifier) {
            argNode.name = new NameNode(nameIdentifier);
        }

        return argNode;
    }

    // atom: ('(' [yield_expr | testlist_comp] ')' |
    //     '[' [testlist_comp] ']' |