Code coverage report for src/node-transformers/control-flow-transformers/control-flow-replacers/LogicalExpressionControlFlowReplacer.ts

# All files / src/node-transformers/control-flow-transformers/control-flow-replacers LogicalExpressionControlFlowReplacer.ts

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     import { injectable, inject } from 'inversify';
    import { ServiceIdentifiers } from '../../../container/ServiceIdentifiers';

    import * as ESTree from 'estree';

    import { TCustomNodeFactory } from '../../../types/container/TCustomNodeFactory';

    import { ICustomNode } from '../../../interfaces/custom-nodes/ICustomNode';
    import { IOptions } from '../../../interfaces/options/IOptions';
    import { IStorage } from '../../../interfaces/storages/IStorage';

    import { CustomNodes } from '../../../enums/container/CustomNodes';

    import { ExpressionWithOperatorControlFlowReplacer } from './ExpressionWithOperatorControlFlowReplacer';
    import { Node } from '../../../node/Node';
    import { NodeUtils } from '../../../node/NodeUtils';

    @injectable()
    export class LogicalExpressionControlFlowReplacer extends ExpressionWithOperatorControlFlowReplacer {
        /**
         * @type {number}
         */
        private static readonly usingExistingIdentifierChance: number = 0.5;

        /**
         * @param customNodeFactory
         * @param options
         */
        constructor (
            @inject(ServiceIdentifiers.Factory__ICustomNode) customNodeFactory: TCustomNodeFactory,
            @inject(ServiceIdentifiers.IOptions) options: IOptions
        ) {
            super(customNodeFactory, options);
        }

        /**
         * @param logicalExpressionNode
         * @param parentNode
         * @param controlFlowStorage
         * @returns {ESTree.Node}
         */
        public replace (
            logicalExpressionNode: ESTree.LogicalExpression,
            parentNode: ESTree.Node,
            controlFlowStorage: IStorage <ICustomNode>
        ): ESTree.Node {
            if (this.checkForProhibitedExpressions(logicalExpressionNode.left, logicalExpressionNode.right)) {
                return logicalExpressionNode;
            }

            const replacerId: string = logicalExpressionNode.operator;
            const logicalExpressionFunctionCustomNode: ICustomNode = this.customNodeFactory(CustomNodes.LogicalExpressionFunctionNode);

            logicalExpressionFunctionCustomNode.initialize(replacerId);

            const storageKey: string = this.insertCustomNodeToControlFlowStorage(
                logicalExpressionFunctionCustomNode,
                controlFlowStorage,
                replacerId,
                LogicalExpressionControlFlowReplacer.usingExistingIdentifierChance
            );

            return this.getControlFlowStorageCallNode(
                controlFlowStorage.getStorageId(),
                storageKey,
                logicalExpressionNode.left,
                logicalExpressionNode.right
            );
        }

        /**
         * @param leftExpression
         * @param rightExpression
         * @returns {boolean}
         */
        private checkForProhibitedExpressions (leftExpression: ESTree.Expression, rightExpression: ESTree.Expression): boolean {
            return [leftExpression, rightExpression].some((expressionNode: ESTree.Node | ESTree.Expression): boolean => {
                let nodeForCheck: ESTree.Node | ESTree.Expression;

                if (!Node.isUnaryExpressionNode(expressionNode)) {
                    nodeForCheck = expressionNode;
                } else {
                    nodeForCheck = NodeUtils.getUnaryExpressionArgumentNode(expressionNode);
                }

                return !Node.isLiteralNode(nodeForCheck) &&
                    !Node.isIdentifierNode(nodeForCheck) &&
                    !Node.isObjectExpressionNode(nodeForCheck) &&
                    !Node.isExpressionStatementNode(nodeForCheck);
            });
        }
    }