Function appendLabel

test/fixtures/snapshot/typescript.js:104050–104087

* Appends a case clause for the last label and sets the new label. * * @param markLabelEnd Indicates that the transition between labels was a fall-through * from a previous case clause and the change in labels should be * re

(markLabelEnd)

         *                     reflected on the `state` object.
         */
        function appendLabel(markLabelEnd) {
            if (!clauses) {
                clauses = [];
            }
            if (statements) {
                if (withBlockStack) {
                    // The previous label was nested inside one or more `with` blocks, so we
                    // surround the statements in generated `with` blocks to create the same environment.
                    for (var i = withBlockStack.length - 1; i >= 0; i--) {
                        var withBlock = withBlockStack[i];
                        statements = [factory.createWithStatement(withBlock.expression, factory.createBlock(statements))];
                    }
                }
                if (currentExceptionBlock) {
                    // The previous label was nested inside of an exception block, so we must
                    // indicate entry into a protected region by pushing the label numbers
                    // for each block in the protected region.
                    var startLabel = currentExceptionBlock.startLabel, catchLabel = currentExceptionBlock.catchLabel, finallyLabel = currentExceptionBlock.finallyLabel, endLabel = currentExceptionBlock.endLabel;
                    statements.unshift(factory.createExpressionStatement(factory.createCallExpression(factory.createPropertyAccessExpression(factory.createPropertyAccessExpression(state, "trys"), "push"), 
                    /*typeArguments*/ undefined, [
                        factory.createArrayLiteralExpression([
                            createLabel(startLabel),
                            createLabel(catchLabel),
                            createLabel(finallyLabel),
                            createLabel(endLabel)
                        ])
                    ])));
                    currentExceptionBlock = undefined;
                }
                if (markLabelEnd) {
                    // The case clause for the last label falls through to this label, so we
                    // add an assignment statement to reflect the change in labels.
                    statements.push(factory.createExpressionStatement(factory.createAssignment(factory.createPropertyAccessExpression(state, "label"), factory.createNumericLiteral(labelNumber + 1))));
                }
            }
            clauses.push(factory.createCaseClause(factory.createNumericLiteral(labelNumber), statements || []));
            statements = undefined;
        }
        /**
         * Tries to enter into a new label at the current operation index.
         */