gr.uom.java.xmi.diff.ReorderParameterRefactoring Maven / Gradle / Ivy

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RefactoringMiner is a library/API written in Java that can detect refactorings applied in the history of a Java project.
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package gr.uom.java.xmi.diff;

import java.util.ArrayList;
import java.util.LinkedHashSet;
import java.util.List;
import java.util.Set;

import org.apache.commons.lang3.tuple.ImmutablePair;
import org.refactoringminer.api.Refactoring;
import org.refactoringminer.api.RefactoringType;

import gr.uom.java.xmi.UMLOperation;
import gr.uom.java.xmi.UMLParameter;
import gr.uom.java.xmi.decomposition.VariableDeclaration;

public class ReorderParameterRefactoring implements Refactoring {
	private List parametersBefore;
	private List parametersAfter;
	private UMLOperation operationBefore;
	private UMLOperation operationAfter;

	public ReorderParameterRefactoring(UMLOperation operationBefore, UMLOperation operationAfter) {
		this.operationBefore = operationBefore;
		this.operationAfter = operationAfter;
		this.parametersBefore = new ArrayList();
		for(UMLParameter parameter : operationBefore.getParametersWithoutReturnType()) {
			parametersBefore.add(parameter.getVariableDeclaration());
		}
		this.parametersAfter = new ArrayList();
		for(UMLParameter parameter : operationAfter.getParametersWithoutReturnType()) {
			parametersAfter.add(parameter.getVariableDeclaration());
		}
	}

	public List getParametersBefore() {
		return parametersBefore;
	}

	public List getParametersAfter() {
		return parametersAfter;
	}

	public UMLOperation getOperationBefore() {
		return operationBefore;
	}

	public UMLOperation getOperationAfter() {
		return operationAfter;
	}

	@Override
	public List leftSide() {
		List ranges = new ArrayList();
		for(VariableDeclaration parameter : parametersBefore) {
			ranges.add(parameter.codeRange()
					.setDescription("original parameter declaration")
					.setCodeElement(parameter.toString()));
		}
		ranges.add(operationBefore.codeRange()
				.setDescription("original method declaration")
				.setCodeElement(operationBefore.toString()));
		return ranges;
	}

	@Override
	public List rightSide() {
		List ranges = new ArrayList();
		for(VariableDeclaration parameter : parametersAfter) {
			ranges.add(parameter.codeRange()
					.setDescription("reordered parameter declaration")
					.setCodeElement(parameter.toString()));
		}
		ranges.add(operationAfter.codeRange()
				.setDescription("method declaration with reordered parameters")
				.setCodeElement(operationAfter.toString()));
		return ranges;
	}

	@Override
	public RefactoringType getRefactoringType() {
		return RefactoringType.REORDER_PARAMETER;
	}

	@Override
	public String getName() {
		return this.getRefactoringType().getDisplayName();
	}

	@Override
	public Set> getInvolvedClassesBeforeRefactoring() {
		Set> pairs = new LinkedHashSet>();
		pairs.add(new ImmutablePair(getOperationBefore().getLocationInfo().getFilePath(), getOperationBefore().getClassName()));
		return pairs;
	}

	@Override
	public Set> getInvolvedClassesAfterRefactoring() {
		Set> pairs = new LinkedHashSet>();
		pairs.add(new ImmutablePair(getOperationAfter().getLocationInfo().getFilePath(), getOperationAfter().getClassName()));
		return pairs;
	}

	public String toString() {
		StringBuilder sb = new StringBuilder();
		sb.append(getName()).append("\t");
		sb.append(parametersBefore);
		sb.append(" to ");
		sb.append(parametersAfter);
		sb.append(" in method ");
		sb.append(operationAfter);
		sb.append(" from class ").append(operationAfter.getClassName());
		return sb.toString();
	}

	@Override
	public int hashCode() {
		final int prime = 31;
		int result = 1;
		result = prime * result + ((operationAfter == null) ? 0 : operationAfter.hashCode());
		result = prime * result + ((operationBefore == null) ? 0 : operationBefore.hashCode());
		result = prime * result + ((parametersAfter == null) ? 0 : parametersAfter.hashCode());
		result = prime * result + ((parametersBefore == null) ? 0 : parametersBefore.hashCode());
		return result;
	}

	@Override
	public boolean equals(Object obj) {
		if (this == obj)
			return true;
		if (obj == null)
			return false;
		if (getClass() != obj.getClass())
			return false;
		ReorderParameterRefactoring other = (ReorderParameterRefactoring) obj;
		if (operationAfter == null) {
			if (other.operationAfter != null)
				return false;
		} else if (!operationAfter.equals(other.operationAfter))
			return false;
		if (operationBefore == null) {
			if (other.operationBefore != null)
				return false;
		} else if (!operationBefore.equals(other.operationBefore))
			return false;
		if (parametersAfter == null) {
			if (other.parametersAfter != null)
				return false;
		} else if (!parametersAfter.equals(other.parametersAfter))
			return false;
		if (parametersBefore == null) {
			if (other.parametersBefore != null)
				return false;
		} else if (!parametersBefore.equals(other.parametersBefore))
			return false;
		return true;
	}
}