Function visitOptionalExpression

test/fixtures/snapshot/typescript.js:97524–97575

(node, captureThisArg, isDelete)

            }
        }
        function visitOptionalExpression(node, captureThisArg, isDelete) {
            var _a = flattenChain(node), expression = _a.expression, chain = _a.chain;
            var left = visitNonOptionalExpression(ts.skipPartiallyEmittedExpressions(expression), ts.isCallChain(chain[0]), /*isDelete*/ false);
            var leftThisArg = ts.isSyntheticReference(left) ? left.thisArg : undefined;
            var capturedLeft = ts.isSyntheticReference(left) ? left.expression : left;
            var leftExpression = factory.restoreOuterExpressions(expression, capturedLeft, 8 /* OuterExpressionKinds.PartiallyEmittedExpressions */);
            if (!ts.isSimpleCopiableExpression(capturedLeft)) {
                capturedLeft = factory.createTempVariable(hoistVariableDeclaration);
                leftExpression = factory.createAssignment(capturedLeft, leftExpression);
            }
            var rightExpression = capturedLeft;
            var thisArg;
            for (var i = 0; i < chain.length; i++) {
                var segment = chain[i];
                switch (segment.kind) {
                    case 206 /* SyntaxKind.PropertyAccessExpression */:
                    case 207 /* SyntaxKind.ElementAccessExpression */:
                        if (i === chain.length - 1 && captureThisArg) {
                            if (!ts.isSimpleCopiableExpression(rightExpression)) {
                                thisArg = factory.createTempVariable(hoistVariableDeclaration);
                                rightExpression = factory.createAssignment(thisArg, rightExpression);
                            }
                            else {
                                thisArg = rightExpression;
                            }
                        }
                        rightExpression = segment.kind === 206 /* SyntaxKind.PropertyAccessExpression */
                            ? factory.createPropertyAccessExpression(rightExpression, ts.visitNode(segment.name, visitor, ts.isIdentifier))
                            : factory.createElementAccessExpression(rightExpression, ts.visitNode(segment.argumentExpression, visitor, ts.isExpression));
                        break;
                    case 208 /* SyntaxKind.CallExpression */:
                        if (i === 0 && leftThisArg) {
                            if (!ts.isGeneratedIdentifier(leftThisArg)) {
                                leftThisArg = factory.cloneNode(leftThisArg);
                                ts.addEmitFlags(leftThisArg, 1536 /* EmitFlags.NoComments */);
                            }
                            rightExpression = factory.createFunctionCallCall(rightExpression, leftThisArg.kind === 106 /* SyntaxKind.SuperKeyword */ ? factory.createThis() : leftThisArg, ts.visitNodes(segment.arguments, visitor, ts.isExpression));
                        }
                        else {
                            rightExpression = factory.createCallExpression(rightExpression, 
                            /*typeArguments*/ undefined, ts.visitNodes(segment.arguments, visitor, ts.isExpression));
                        }
                        break;
                }
                ts.setOriginalNode(rightExpression, segment);
            }
            var target = isDelete
                ? factory.createConditionalExpression(createNotNullCondition(leftExpression, capturedLeft, /*invert*/ true), /*questionToken*/ undefined, factory.createTrue(), /*colonToken*/ undefined, factory.createDeleteExpression(rightExpression))
                : factory.createConditionalExpression(createNotNullCondition(leftExpression, capturedLeft, /*invert*/ true), /*questionToken*/ undefined, factory.createVoidZero(), /*colonToken*/ undefined, rightExpression);
            ts.setTextRange(target, node);
            return thisArg ? factory.createSyntheticReferenceExpression(target, thisArg) : target;
        }
        function createNotNullCondition(left, right, invert) {
            return factory.createBinaryExpression(factory.createBinaryExpression(left, factory.createToken(invert ? 36 /* SyntaxKind.EqualsEqualsEqualsToken */ : 37 /* SyntaxKind.ExclamationEqualsEqualsToken */), factory.createNull()), factory.createToken(invert ? 56 /* SyntaxKind.BarBarToken */ : 55 /* SyntaxKind.AmpersandAmpersandToken */), factory.createBinaryExpression(right, factory.createToken(invert ? 36 /* SyntaxKind.EqualsEqualsEqualsToken */ : 37 /* SyntaxKind.ExclamationEqualsEqualsToken */), factory.createVoidZero()));
        }