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gr.uom.java.xmi.decomposition.AbstractCodeMapping Maven / Gradle / Ivy
package gr.uom.java.xmi.decomposition;
import static gr.uom.java.xmi.Constants.JAVA;
import java.util.ArrayList;
import java.util.Arrays;
import java.util.LinkedHashSet;
import java.util.List;
import java.util.Set;
import org.apache.commons.lang3.tuple.Pair;
import org.refactoringminer.api.Refactoring;
import org.refactoringminer.api.RefactoringMinerTimedOutException;
import org.refactoringminer.api.RefactoringType;
import org.refactoringminer.util.PrefixSuffixUtils;
import gr.uom.java.xmi.LocationInfo.CodeElementType;
import gr.uom.java.xmi.UMLAnonymousClass;
import gr.uom.java.xmi.UMLAttribute;
import gr.uom.java.xmi.UMLClass;
import gr.uom.java.xmi.UMLParameter;
import gr.uom.java.xmi.UMLType;
import gr.uom.java.xmi.VariableDeclarationContainer;
import gr.uom.java.xmi.decomposition.replacement.ClassInstanceCreationWithMethodInvocationReplacement;
import gr.uom.java.xmi.decomposition.replacement.CompositeReplacement;
import gr.uom.java.xmi.decomposition.replacement.IntersectionReplacement;
import gr.uom.java.xmi.decomposition.replacement.MethodInvocationReplacement;
import gr.uom.java.xmi.decomposition.replacement.MethodInvocationWithClassInstanceCreationReplacement;
import gr.uom.java.xmi.decomposition.replacement.ObjectCreationReplacement;
import gr.uom.java.xmi.decomposition.replacement.Replacement;
import gr.uom.java.xmi.decomposition.replacement.Replacement.ReplacementType;
import gr.uom.java.xmi.decomposition.replacement.VariableReplacementWithMethodInvocation.Direction;
import gr.uom.java.xmi.decomposition.replacement.VariableReplacementWithMethodInvocation;
import gr.uom.java.xmi.diff.ExtractVariableRefactoring;
import gr.uom.java.xmi.diff.InlineVariableRefactoring;
import gr.uom.java.xmi.diff.LeafMappingProvider;
import gr.uom.java.xmi.diff.RenameOperationRefactoring;
import gr.uom.java.xmi.diff.UMLAbstractClassDiff;
import gr.uom.java.xmi.diff.UMLAnonymousClassDiff;
public abstract class AbstractCodeMapping implements LeafMappingProvider {
private AbstractCodeFragment fragment1;
private AbstractCodeFragment fragment2;
private VariableDeclarationContainer operation1;
private VariableDeclarationContainer operation2;
private Set replacements;
private List subExpressionMappings;
private boolean identicalWithExtractedVariable;
private boolean identicalWithInlinedVariable;
private Set refactorings = new LinkedHashSet();
private int matchingArgumentsWithOperationInvocation;
private boolean matchedWithNullReplacements;
private Set anonymousClassDiffs = new LinkedHashSet();
public AbstractCodeMapping(AbstractCodeFragment fragment1, AbstractCodeFragment fragment2,
VariableDeclarationContainer operation1, VariableDeclarationContainer operation2) {
this.fragment1 = fragment1;
this.fragment2 = fragment2;
this.operation1 = operation1;
this.operation2 = operation2;
this.replacements = new LinkedHashSet();
this.subExpressionMappings = new ArrayList();
}
public abstract double editDistance();
public boolean equalContainer() {
return operation1.equals(operation2);
}
public AbstractCodeFragment getFragment1() {
return fragment1;
}
public AbstractCodeFragment getFragment2() {
return fragment2;
}
public VariableDeclarationContainer getOperation1() {
return operation1;
}
public VariableDeclarationContainer getOperation2() {
return operation2;
}
public boolean isIdenticalWithExtractedVariable() {
return identicalWithExtractedVariable;
}
public boolean isIdenticalWithInlinedVariable() {
return identicalWithInlinedVariable;
}
public void addRefactoring(Refactoring r) {
refactorings.add(r);
}
public Set getRefactorings() {
return refactorings;
}
public Set getAnonymousClassDiffs() {
return anonymousClassDiffs;
}
public boolean containsRefactoringOfType(RefactoringType type) {
for(Refactoring r : refactorings) {
if(r.getRefactoringType().equals(type)) {
return true;
}
}
return false;
}
public int getMatchingArgumentsWithOperationInvocation() {
return matchingArgumentsWithOperationInvocation;
}
public void setMatchingArgumentsWithOperationInvocation(int matchingArgumentsWithOperationInvocation) {
this.matchingArgumentsWithOperationInvocation = matchingArgumentsWithOperationInvocation;
}
public boolean isExact() {
return (fragment1.getArgumentizedString().equals(fragment2.getArgumentizedString()) || argumentizedStringExactAfterTypeReplacement() ||
fragment1.getString().equals(fragment2.getString()) || isExactAfterAbstraction() || containsIdenticalOrCompositeReplacement()) && !fragment1.isKeyword();
}
private boolean argumentizedStringExactAfterTypeReplacement() {
String s1 = fragment1.getArgumentizedString();
String s2 = fragment2.getArgumentizedString();
for(Replacement r : replacements) {
if(r.getType().equals(ReplacementType.TYPE)) {
if(s1.startsWith(r.getBefore()) && s2.startsWith(r.getAfter())) {
String temp = s2.replace(r.getAfter(), r.getBefore());
if(s1.equals(temp) || (s1 + JAVA.STATEMENT_TERMINATION).equals(temp)) {
return true;
}
}
}
}
return false;
}
private boolean isExactAfterAbstraction() {
AbstractCall invocation1 = fragment1.invocationCoveringEntireFragment();
AbstractCall invocation2 = fragment2.invocationCoveringEntireFragment();
if(invocation1 != null && invocation2 != null) {
return invocation1.actualString().equals(invocation2.actualString());
}
ObjectCreation creation1 = fragment1.creationCoveringEntireFragment();
ObjectCreation creation2 = fragment2.creationCoveringEntireFragment();
if(creation1 != null && creation2 != null) {
return creation1.actualString().equals(creation2.actualString());
}
return false;
}
public void addSubExpressionMapping(LeafMapping newLeafMapping) {
boolean alreadyPresent = false;
for(LeafMapping oldLeafMapping : subExpressionMappings) {
if(oldLeafMapping.getFragment1().getLocationInfo().equals(newLeafMapping.getFragment1().getLocationInfo()) &&
oldLeafMapping.getFragment2().getLocationInfo().equals(newLeafMapping.getFragment2().getLocationInfo())) {
alreadyPresent = true;
break;
}
}
if(!alreadyPresent) {
subExpressionMappings.add(newLeafMapping);
}
}
public void addSubExpressionMappings(List leafMappings) {
for(LeafMapping leafMapping : leafMappings) {
addSubExpressionMapping(leafMapping);
}
}
public List getSubExpressionMappings() {
return subExpressionMappings;
}
private boolean containsIdenticalOrCompositeReplacement() {
for(Replacement r : replacements) {
if(r.getType().equals(ReplacementType.ARRAY_INITIALIZER_REPLACED_WITH_METHOD_INVOCATION_ARGUMENTS) &&
r.getBefore().equals(r.getAfter())) {
return true;
}
else if(r.getType().equals(ReplacementType.COMPOSITE)) {
return true;
}
}
return false;
}
public CompositeReplacement containsCompositeReplacement() {
for(Replacement r : replacements) {
if(r.getType().equals(ReplacementType.COMPOSITE)) {
return (CompositeReplacement)r;
}
}
return null;
}
public void addReplacement(Replacement replacement) {
this.replacements.add(replacement);
}
public void addReplacements(Set replacements) {
if(replacements != null) {
this.replacements.addAll(replacements);
}
else {
matchedWithNullReplacements = true;
}
}
public boolean isMatchedWithNullReplacements() {
return matchedWithNullReplacements;
}
public Set getReplacements() {
return replacements;
}
public boolean containsReplacement(ReplacementType type) {
for(Replacement replacement : replacements) {
if(replacement.getType().equals(type)) {
return true;
}
}
return false;
}
public boolean containsOnlyReplacement(ReplacementType type) {
for(Replacement replacement : replacements) {
if(!replacement.getType().equals(type)) {
return false;
}
}
return replacements.size() > 0;
}
public Set getReplacementTypes() {
Set types = new LinkedHashSet();
for(Replacement replacement : replacements) {
types.add(replacement.getType());
}
return types;
}
public String toString() {
return fragment1.toString() + fragment2.toString();
}
public boolean isFieldAssignmentWithParameter() {
boolean fieldAssignmentWithParameter1 = false;
for(String parameterName : operation1.getParameterNameList()) {
if(fragment1.getString().equals(JAVA.THIS_DOT + parameterName + JAVA.ASSIGNMENT + parameterName + JAVA.STATEMENT_TERMINATION)) {
fieldAssignmentWithParameter1 = true;
break;
}
}
boolean fieldAssignmentWithParameter2 = false;
for(String parameterName : operation2.getParameterNameList()) {
if(fragment2.getString().equals(JAVA.THIS_DOT + parameterName + JAVA.ASSIGNMENT + parameterName + JAVA.STATEMENT_TERMINATION)) {
fieldAssignmentWithParameter2 = true;
break;
}
}
return fieldAssignmentWithParameter1 && fieldAssignmentWithParameter2;
}
public boolean isFieldAssignmentWithParameterHavingSameType() {
boolean fieldAssignmentWithParameter1 = false;
UMLType type1 = null;
for(UMLParameter parameter : operation1.getParametersWithoutReturnType()) {
String parameterName = parameter.getName();
if(fragment1.getString().equals(JAVA.THIS_DOT + parameterName + JAVA.ASSIGNMENT + parameterName + JAVA.STATEMENT_TERMINATION)) {
fieldAssignmentWithParameter1 = true;
type1 = parameter.getType();
break;
}
}
boolean fieldAssignmentWithParameter2 = false;
UMLType type2 = null;
for(UMLParameter parameter : operation2.getParametersWithoutReturnType()) {
String parameterName = parameter.getName();
if(fragment2.getString().equals(JAVA.THIS_DOT + parameterName + JAVA.ASSIGNMENT + parameterName + JAVA.STATEMENT_TERMINATION)) {
fieldAssignmentWithParameter2 = true;
type2 = parameter.getType();
break;
}
}
return fieldAssignmentWithParameter1 && fieldAssignmentWithParameter2 && type1.equals(type2);
}
public void temporaryVariableAssignment(Set refactorings, List nonMappedLeavesT2, boolean insideExtractedOrInlinedMethod) {
if(this instanceof LeafMapping && getFragment1() instanceof AbstractExpression
&& getFragment2() instanceof StatementObject) {
StatementObject statement = (StatementObject) getFragment2();
List variableDeclarations = statement.getVariableDeclarations();
boolean validReplacements = true;
for(Replacement replacement : getReplacements()) {
if(replacement instanceof MethodInvocationReplacement || replacement instanceof ObjectCreationReplacement) {
validReplacements = false;
break;
}
}
if(getFragment1().getVariableDeclarations().size() == 0 && variableDeclarations.size() == 1 && validReplacements) {
VariableDeclaration variableDeclaration = variableDeclarations.get(0);
ExtractVariableRefactoring ref = new ExtractVariableRefactoring(variableDeclaration, operation1, operation2, insideExtractedOrInlinedMethod);
LeafMapping leafMapping = new LeafMapping(getFragment1(), variableDeclaration.getInitializer(), operation1, operation2);
ref.addSubExpressionMapping(leafMapping);
processExtractVariableRefactoring(ref, refactorings);
checkForNestedExtractVariable(ref, refactorings, nonMappedLeavesT2, insideExtractedOrInlinedMethod);
identicalWithExtractedVariable = true;
}
}
}
private void checkForNestedExtractVariable(ExtractVariableRefactoring parentRefactoring, Set refactorings, List nonMappedLeavesT2, boolean insideExtractedOrInlinedMethod) {
for(AbstractCodeFragment leaf2 : nonMappedLeavesT2) {
List variableDeclarations = leaf2.getVariableDeclarations();
if(variableDeclarations.size() == 1) {
VariableDeclaration variableDeclaration = variableDeclarations.get(0);
if(variableDeclaration.getInitializer() != null) {
List leafExpressions1 = getFragment1().findExpression(variableDeclaration.getInitializer().getString());
if(leafExpressions1.isEmpty() && !leaf2.equals(getFragment2())) {
for(AbstractCall invocation : getFragment1().getMethodInvocations()) {
if(variableDeclaration.getInitializer().getString().startsWith(invocation.actualString()) || variableDeclaration.getInitializer().getString().endsWith(invocation.actualString())) {
leafExpressions1 = getFragment1().findExpression(invocation.actualString());
}
}
}
if(leafExpressions1.size() > 0 && isVariableReferenced(parentRefactoring, variableDeclaration)) {
ExtractVariableRefactoring ref2 = new ExtractVariableRefactoring(variableDeclaration, operation1, operation2, insideExtractedOrInlinedMethod);
if(!ref2.equals(parentRefactoring)) {
for(LeafExpression subExpression : leafExpressions1) {
LeafMapping leafMapping2 = new LeafMapping(subExpression, variableDeclaration.getInitializer(), operation1, operation2);
ref2.addSubExpressionMapping(leafMapping2);
}
processExtractVariableRefactoring(ref2, refactorings);
}
}
}
}
}
}
private boolean isVariableReferenced(ExtractVariableRefactoring parentRefactoring, VariableDeclaration variableDeclaration) {
if(parentRefactoring.getVariableDeclaration().getInitializer() != null && parentRefactoring.getVariableDeclaration().getInitializer().findExpression(variableDeclaration.getVariableName()).size() > 0) {
return true;
}
if(parentRefactoring.getVariableDeclaration().isAttribute()) {
for(LeafMapping mapping : parentRefactoring.getSubExpressionMappings()) {
if(ReplacementUtil.contains(mapping.getFragment2().getString(), variableDeclaration.getVariableName())) {
return true;
}
}
}
for(AbstractCodeMapping mapping : parentRefactoring.getReferences()) {
if(variableDeclaration.getScope().subsumes(mapping.getFragment2().getLocationInfo()) && mapping.getFragment2().findExpression(variableDeclaration.getVariableName()).size() > 0 &&
mapping.getFragment1().findExpression(variableDeclaration.getVariableName()).size() == 0) {
return true;
}
}
return false;
}
private void checkForAliasedVariable(AbstractExpression initializer, Replacement replacement,
List nonMappedLeavesT2, UMLAbstractClassDiff classDiff, boolean insideExtractedOrInlinedMethod) {
VariableDeclaration aliasedWithVariable = operation2.getVariableDeclaration(initializer.getString());
if(aliasedWithVariable != null && aliasedWithVariable.getInitializer() != null) {
String rightHandSide = aliasedWithVariable.getInitializer().getString();
if(replacement instanceof VariableReplacementWithMethodInvocation) {
VariableReplacementWithMethodInvocation r = (VariableReplacementWithMethodInvocation)replacement;
for(AbstractCall call : aliasedWithVariable.getInitializer().getMethodInvocations()) {
if(call.equals(r.getInvokedOperation())) {
ExtractVariableRefactoring ref = new ExtractVariableRefactoring(aliasedWithVariable, operation1, operation2, insideExtractedOrInlinedMethod);
LeafMapping leafMapping = new LeafMapping(r.getInvokedOperation(), call, operation1, operation2);
ref.addSubExpressionMapping(leafMapping);
processExtractVariableRefactoring(ref, refactorings);
checkForNestedExtractVariable(ref, refactorings, nonMappedLeavesT2, insideExtractedOrInlinedMethod);
if(identical()) {
identicalWithExtractedVariable = true;
}
break;
}
}
}
else if(replacement.getBefore().equals(rightHandSide)) {
ExtractVariableRefactoring ref = new ExtractVariableRefactoring(aliasedWithVariable.getVariableDeclaration(), operation1, operation2, insideExtractedOrInlinedMethod);
List leafExpressions1 = getFragment1().findExpression(rightHandSide);
List leafExpressions2 = aliasedWithVariable.getInitializer().findExpression(rightHandSide);
if(leafExpressions1.size() == leafExpressions2.size()) {
for(int i=0; i leafExpressions1 = getFragment1().findExpression(rightHandSide);
List leafExpressions2 = leaf2.findExpression(rightHandSide);
if(leafExpressions1.size() == leafExpressions2.size()) {
for(int i=0; i nonMappedLeavesT2, UMLAbstractClassDiff classDiff, boolean insideExtractedOrInlinedMethod, Set currentMappings) throws RefactoringMinerTimedOutException {
for(VariableDeclaration declaration : statement.getVariableDeclarations()) {
String variableName = declaration.getVariableName();
AbstractExpression initializer = declaration.getInitializer();
for(Replacement replacement : getReplacements()) {
String after = replacement.getAfter();
String before = replacement.getBefore();
if(replacement.getType().equals(ReplacementType.PARENTHESIZED_EXPRESSION) ||
replacement.getType().equals(ReplacementType.VARIABLE_REPLACED_WITH_PARENTHESIZED_EXPRESSION)) {
if(after.startsWith("(") && after.endsWith(")")) {
after = after.substring(1, after.length()-1);
}
if(before.startsWith("(") && before.endsWith(")")) {
before = before.substring(1, before.length()-1);
}
}
if(replacement.getType().equals(ReplacementType.CAST_EXPRESSION)) {
String cast1 = null;
String cast2 = null;
if(after.startsWith("(") && after.contains(")")) {
cast1 = after.substring(0, after.indexOf(")")+1);
}
if(before.startsWith("(") && before.contains(")")) {
cast2 = before.substring(0, before.indexOf(")")+1);
}
if(cast1 != null && cast2 != null && cast1.equals(cast2)) {
after = after.substring(after.indexOf(")")+1, after.length());
before = before.substring(before.indexOf(")")+1, before.length());
}
}
if(replacement instanceof MethodInvocationReplacement) {
MethodInvocationReplacement r = (MethodInvocationReplacement)replacement;
AbstractCall callBefore = r.getInvokedOperationBefore();
AbstractCall callAfter = r.getInvokedOperationAfter();
int indexOfArgument2 = callAfter.arguments().indexOf(variableName);
if(indexOfArgument2 != -1 && callBefore.arguments().size() == callAfter.arguments().size()) {
after = variableName;
before = callBefore.arguments().get(indexOfArgument2);
}
}
if(after.startsWith(variableName + ".")) {
String suffixAfter = after.substring(variableName.length(), after.length());
if(before.endsWith(suffixAfter) || before.contains(suffixAfter)) {
String prefixBefore = before.substring(0, before.indexOf(suffixAfter));
if(initializer != null) {
if(initializer.toString().equals(prefixBefore) ||
overlappingExtractVariable(initializer, prefixBefore, nonMappedLeavesT2, insideExtractedOrInlinedMethod, refactorings)) {
ExtractVariableRefactoring ref = new ExtractVariableRefactoring(declaration, operation1, operation2, insideExtractedOrInlinedMethod);
List subExpressions = getFragment1().findExpression(prefixBefore);
for(LeafExpression subExpression : subExpressions) {
LeafMapping leafMapping = new LeafMapping(subExpression, initializer, operation1, operation2);
ref.addSubExpressionMapping(leafMapping);
}
processExtractVariableRefactoring(ref, refactorings);
checkForNestedExtractVariable(ref, refactorings, nonMappedLeavesT2, insideExtractedOrInlinedMethod);
if(identical()) {
identicalWithExtractedVariable = true;
}
return;
}
}
}
}
else if(after.startsWith("()" + JAVA.LAMBDA_ARROW + variableName + ".")) {
int extraLength = "()".length() + JAVA.LAMBDA_ARROW.length();
String suffixAfter = after.substring(extraLength + variableName.length(), after.length());
if(before.endsWith(suffixAfter) || before.contains(suffixAfter)) {
String prefixBefore = before.substring(0, before.indexOf(suffixAfter));
if(prefixBefore.startsWith("()" + JAVA.LAMBDA_ARROW)) {
prefixBefore = prefixBefore.substring(extraLength);
}
if(initializer != null) {
if(initializer.toString().equals(prefixBefore)) {
ExtractVariableRefactoring ref = new ExtractVariableRefactoring(declaration, operation1, operation2, insideExtractedOrInlinedMethod);
List subExpressions = getFragment1().findExpression(prefixBefore);
for(LeafExpression subExpression : subExpressions) {
LeafMapping leafMapping = new LeafMapping(subExpression, initializer, operation1, operation2);
ref.addSubExpressionMapping(leafMapping);
}
processExtractVariableRefactoring(ref, refactorings);
checkForNestedExtractVariable(ref, refactorings, nonMappedLeavesT2, insideExtractedOrInlinedMethod);
if(identical()) {
identicalWithExtractedVariable = true;
}
return;
}
}
}
}
if(variableName.equals(after) && initializer != null) {
checkForAliasedVariable(initializer, replacement, nonMappedLeavesT2, classDiff, insideExtractedOrInlinedMethod);
if(initializer.toString().equals(before) ||
initializer.toString().equals(JAVA.THIS_DOT + before) ||
overlappingExtractVariable(initializer, before, nonMappedLeavesT2, insideExtractedOrInlinedMethod, refactorings) ||
(initializer.toString().equals("(" + declaration.getType() + ")" + before) && !containsVariableNameReplacement(variableName)) ||
ternaryMatch(initializer, before) ||
infixOperandMatch(initializer, before) ||
wrappedAsArgument(initializer, before) ||
stringConcatMatch(initializer, before) ||
reservedTokenMatch(initializer, replacement, before) ||
anonymousWithMethodSignatureChange(initializer, before, classDiff)) {
ExtractVariableRefactoring ref = new ExtractVariableRefactoring(declaration, operation1, operation2, insideExtractedOrInlinedMethod);
List subExpressions = getFragment1().findExpression(before);
for(LeafExpression subExpression : subExpressions) {
LeafMapping leafMapping = new LeafMapping(subExpression, initializer, operation1, operation2);
ref.addSubExpressionMapping(leafMapping);
}
if(infixOperandMatch(initializer, before)) {
List infixExpressions = initializer.getInfixExpressions();
for(LeafExpression infixExpression : infixExpressions) {
if(infixExpression.getString().contains(JAVA.STRING_CONCATENATION)) {
List operands = Arrays.asList(StringBasedHeuristics.SPLIT_CONCAT_STRING_PATTERN.split(infixExpression.getString()));
for(String operand : operands) {
List leafExpressions2 = initializer.findExpression(operand);
List leafExpressions1 = fragment1.findExpression(operand);
if(leafExpressions1.size() == leafExpressions2.size()) {
for(int i=0; i operands = Arrays.asList(StringBasedHeuristics.SPLIT_CONCAT_STRING_PATTERN.split(initializer.getString()));
List leafMappings = new ArrayList();
StringBuilder concatenated = new StringBuilder();
for(String operand : operands) {
List leafExpressions2 = initializer.findExpression(operand);
List leafExpressions1 = fragment1.findExpression(before);
if(leafExpressions1.size() == leafExpressions2.size() && leafExpressions1.size() == 1) {
LeafMapping leafMapping = new LeafMapping(leafExpressions1.get(0), leafExpressions2.get(0), operation1, operation2);
leafMappings.add(leafMapping);
}
if(operand.startsWith("\"") && operand.endsWith("\"")) {
concatenated.append(operand.substring(1, operand.length()-1));
}
else {
concatenated.append(operand);
}
}
if(before.contains(concatenated)) {
for(LeafMapping leafMapping : leafMappings) {
ref.addSubExpressionMapping(leafMapping);
}
}
}
}
processExtractVariableRefactoring(ref, refactorings);
checkForNestedExtractVariable(ref, refactorings, nonMappedLeavesT2, insideExtractedOrInlinedMethod);
if(identical()) {
identicalWithExtractedVariable = true;
}
return;
}
}
}
if(classDiff != null && initializer != null) {
AbstractCall invocation = initializer.invocationCoveringEntireFragment();
if(invocation != null) {
for(Refactoring refactoring : classDiff.getRefactoringsBeforePostProcessing()) {
if(refactoring instanceof RenameOperationRefactoring) {
RenameOperationRefactoring rename = (RenameOperationRefactoring)refactoring;
if(invocation.getName().equals(rename.getRenamedOperation().getName())) {
String initializerBeforeRename = initializer.getString().replace(rename.getRenamedOperation().getName(), rename.getOriginalOperation().getName());
if(getFragment1().getString().contains(initializerBeforeRename) && getFragment2().getString().contains(variableName)) {
ExtractVariableRefactoring ref = new ExtractVariableRefactoring(declaration, operation1, operation2, insideExtractedOrInlinedMethod);
List subExpressions = getFragment1().findExpression(initializerBeforeRename);
for(LeafExpression subExpression : subExpressions) {
LeafMapping leafMapping = new LeafMapping(subExpression, initializer, operation1, operation2);
ref.addSubExpressionMapping(leafMapping);
}
processExtractVariableRefactoring(ref, refactorings);
checkForNestedExtractVariable(ref, refactorings, nonMappedLeavesT2, insideExtractedOrInlinedMethod);
return;
}
}
}
}
}
}
if(classDiff != null && getFragment1().getVariableDeclarations().size() > 0 && initializer != null && getFragment1().getVariableDeclarations().toString().equals(getFragment2().getVariableDeclarations().toString())) {
VariableDeclaration variableDeclaration1 = getFragment1().getVariableDeclarations().get(0);
if(variableDeclaration1.getInitializer() != null && variableDeclaration1.getInitializer().toString().contains(initializer.toString()) && !isDefaultValue(variableDeclaration1.getInitializer().toString())) {
boolean callToAddedOperation = false;
boolean callToDeletedOperation = false;
AbstractCall invocationCoveringTheEntireStatement1 = getFragment1().invocationCoveringEntireFragment();
if(invocationCoveringTheEntireStatement1 != null) {
callToDeletedOperation = classDiff.matchesOperation(invocationCoveringTheEntireStatement1, classDiff.getRemovedOperations(), operation1) != null;
}
AbstractCall invocationCoveringTheEntireStatement2 = getFragment2().invocationCoveringEntireFragment();
if(invocationCoveringTheEntireStatement2 != null) {
callToAddedOperation = classDiff.matchesOperation(invocationCoveringTheEntireStatement2, classDiff.getAddedOperations(), operation2) != null;
}
boolean equalInvocations = invocationCoveringTheEntireStatement1 != null && invocationCoveringTheEntireStatement2 != null &&
(invocationCoveringTheEntireStatement1.equals(invocationCoveringTheEntireStatement2) || containsOnlyReplacement(ReplacementType.METHOD_INVOCATION_NAME));
if(callToAddedOperation != callToDeletedOperation && !equalInvocations) {
ExtractVariableRefactoring ref = new ExtractVariableRefactoring(declaration, operation1, operation2, insideExtractedOrInlinedMethod);
List subExpressions = getFragment1().findExpression(initializer.toString());
for(LeafExpression subExpression : subExpressions) {
LeafMapping leafMapping = new LeafMapping(subExpression, initializer, operation1, operation2);
ref.addSubExpressionMapping(leafMapping);
}
processExtractVariableRefactoring(ref, refactorings);
checkForNestedExtractVariable(ref, refactorings, nonMappedLeavesT2, insideExtractedOrInlinedMethod);
return;
}
}
}
}
if(getFragment2().getVariableDeclarations().size() > 0 && getFragment2().getVariableDeclarations().get(0).getInitializer() != null && replacements.size() == 1) {
checkForAliasedVariable(getFragment2().getVariableDeclarations().get(0).getInitializer(), replacements.iterator().next(), nonMappedLeavesT2, classDiff, insideExtractedOrInlinedMethod);
}
String argumentizedString = statement.getArgumentizedString();
if(argumentizedString.contains(JAVA.ASSIGNMENT) && (statement.getLocationInfo().before(fragment2.getLocationInfo()) || fragment2.getLocationInfo().getCodeElementType().equals(CodeElementType.DO_STATEMENT))) {
String beforeAssignment = argumentizedString.substring(0, argumentizedString.indexOf(JAVA.ASSIGNMENT));
String[] tokens = beforeAssignment.split("\\s");
String variable = tokens[tokens.length-1];
String initializer = null;
if(argumentizedString.endsWith(JAVA.STATEMENT_TERMINATION)) {
initializer = argumentizedString.substring(argumentizedString.indexOf(JAVA.ASSIGNMENT)+1, argumentizedString.length()-JAVA.STATEMENT_TERMINATION.length());
}
else {
initializer = argumentizedString.substring(argumentizedString.indexOf(JAVA.ASSIGNMENT)+1, argumentizedString.length());
}
for(Replacement replacement : getReplacements()) {
if(variable.endsWith(replacement.getAfter()) && (initializer.equals(replacement.getBefore()) ||
initializer.contains(": " + replacement.getBefore()) || initializer.contains("? " + replacement.getBefore()))) {
List variableDeclarations = operation2.getVariableDeclarationsInScope(fragment2.getLocationInfo());
for(VariableDeclaration declaration : variableDeclarations) {
if(declaration.getVariableName().equals(variable)) {
boolean declarationMappingFound = false;
for(AbstractCodeMapping currentMapping : currentMappings) {
if(currentMapping.getFragment2().getVariableDeclarations().contains(declaration) &&
currentMapping.getFragment1().getVariableDeclaration(variable) != null) {
declarationMappingFound = true;
break;
}
}
if(!declarationMappingFound) {
ExtractVariableRefactoring ref = new ExtractVariableRefactoring(declaration, operation1, operation2, insideExtractedOrInlinedMethod);
List subExpressions = getFragment1().findExpression(replacement.getBefore());
for(LeafExpression subExpression : subExpressions) {
List initializerSubExpressions = statement.findExpression(initializer);
if(initializerSubExpressions.size() > 0) {
LeafMapping leafMapping = new LeafMapping(subExpression, initializerSubExpressions.get(0), operation1, operation2);
ref.addSubExpressionMapping(leafMapping);
}
}
processExtractVariableRefactoring(ref, refactorings);
checkForNestedExtractVariable(ref, refactorings, nonMappedLeavesT2, insideExtractedOrInlinedMethod);
if(identical()) {
identicalWithExtractedVariable = true;
}
return;
}
}
}
}
}
}
}
private boolean anonymousWithMethodSignatureChange(AbstractExpression initializer, String before, UMLAbstractClassDiff classDiff) throws RefactoringMinerTimedOutException {
if(initializer.getAnonymousClassDeclarations().size() > 0) {
for(AnonymousClassDeclarationObject anonymousDeclaration : initializer.getAnonymousClassDeclarations()) {
UMLAnonymousClass anonymousClass = operation1.findAnonymousClass(anonymousDeclaration);
if(anonymousClass == null) {
anonymousClass = operation2.findAnonymousClass(anonymousDeclaration);
//check if operation1 has anonymous with equal signature
if(anonymousClass != null) {
for(UMLAnonymousClass otherAnonymousClass : operation1.getAnonymousClassList()) {
UMLAnonymousClassDiff anonymousClassDiff = new UMLAnonymousClassDiff(otherAnonymousClass, anonymousClass, classDiff, classDiff != null ? classDiff.getModelDiff() : null);
anonymousClassDiff.process();
List matchedOperationMappers = anonymousClassDiff.getOperationBodyMapperList();
if(matchedOperationMappers.size() > 0) {
anonymousClassDiffs.add(anonymousClassDiff);
return true;
}
}
}
}
else {
//check if operation2 has anonymous with equal signature
for(UMLAnonymousClass otherAnonymousClass : operation2.getAnonymousClassList()) {
UMLAnonymousClassDiff anonymousClassDiff = new UMLAnonymousClassDiff(anonymousClass, otherAnonymousClass, classDiff, classDiff != null ? classDiff.getModelDiff() : null);
anonymousClassDiff.process();
List matchedOperationMappers = anonymousClassDiff.getOperationBodyMapperList();
if(matchedOperationMappers.size() > 0) {
anonymousClassDiffs.add(anonymousClassDiff);
return true;
}
}
}
}
}
return false;
}
private boolean isDefaultValue(String argument) {
return argument.equals("null") || argument.equals("0") || argument.equals("1") || argument.equals("false") || argument.equals("true");
}
public void inlinedVariableAssignment(AbstractCodeFragment statement,
List nonMappedLeavesT2, UMLAbstractClassDiff classDiff, boolean insideExtractedOrInlinedMethod) throws RefactoringMinerTimedOutException {
for(VariableDeclaration declaration : statement.getVariableDeclarations()) {
AbstractExpression initializer = declaration.getInitializer();
String variableName = declaration.getVariableName();
for(Replacement replacement : getReplacements()) {
String after = replacement.getAfter();
String before = replacement.getBefore();
if(replacement.getType().equals(ReplacementType.PARENTHESIZED_EXPRESSION) ||
replacement.getType().equals(ReplacementType.VARIABLE_REPLACED_WITH_PARENTHESIZED_EXPRESSION)) {
if(after.startsWith("(") && after.endsWith(")")) {
after = after.substring(1, after.length()-1);
}
if(before.startsWith("(") && before.endsWith(")")) {
before = before.substring(1, before.length()-1);
}
}
if(replacement.getType().equals(ReplacementType.CAST_EXPRESSION)) {
String cast1 = null;
String cast2 = null;
if(after.startsWith("(") && after.contains(")")) {
cast1 = after.substring(0, after.indexOf(")")+1);
}
if(before.startsWith("(") && before.contains(")")) {
cast2 = before.substring(0, before.indexOf(")")+1);
}
if(cast1 != null && cast2 != null && cast1.equals(cast2)) {
after = after.substring(after.indexOf(")")+1, after.length());
before = before.substring(before.indexOf(")")+1, before.length());
}
}
if(before.startsWith(variableName + ".")) {
String suffixBefore = before.substring(variableName.length(), before.length());
if(after.endsWith(suffixBefore) || after.contains(suffixBefore)) {
String prefixAfter = after.substring(0, after.indexOf(suffixBefore));
if(initializer != null) {
if(initializer.toString().equals(prefixAfter) ||
overlappingExtractVariable(initializer, prefixAfter, nonMappedLeavesT2, insideExtractedOrInlinedMethod, refactorings)) {
InlineVariableRefactoring ref = new InlineVariableRefactoring(declaration, operation1, operation2, insideExtractedOrInlinedMethod);
List subExpressions = getFragment2().findExpression(prefixAfter);
for(LeafExpression subExpression : subExpressions) {
LeafMapping leafMapping = new LeafMapping(initializer, subExpression, operation1, operation2);
ref.addSubExpressionMapping(leafMapping);
}
processInlineVariableRefactoring(ref, refactorings);
if(identical()) {
identicalWithInlinedVariable = true;
}
return;
}
}
}
}
else if(before.startsWith("()" + JAVA.LAMBDA_ARROW + variableName + ".")) {
int extraLength = "()".length() + JAVA.LAMBDA_ARROW.length();
String suffixBefore = before.substring(extraLength + variableName.length(), before.length());
if(after.endsWith(suffixBefore) || after.contains(suffixBefore)) {
String prefixAfter = after.substring(0, after.indexOf(suffixBefore));
if(prefixAfter.startsWith("()" + JAVA.LAMBDA_ARROW)) {
prefixAfter = prefixAfter.substring(extraLength);
}
if(initializer != null) {
if(initializer.toString().equals(prefixAfter)) {
InlineVariableRefactoring ref = new InlineVariableRefactoring(declaration, operation1, operation2, insideExtractedOrInlinedMethod);
List subExpressions = getFragment2().findExpression(prefixAfter);
for(LeafExpression subExpression : subExpressions) {
LeafMapping leafMapping = new LeafMapping(initializer, subExpression, operation1, operation2);
ref.addSubExpressionMapping(leafMapping);
}
processInlineVariableRefactoring(ref, refactorings);
if(identical()) {
identicalWithInlinedVariable = true;
}
return;
}
}
}
}
if(variableName.equals(before) && initializer != null) {
if(initializer.toString().equals(after) ||
initializer.toString().equals(JAVA.THIS_DOT + after) ||
overlappingExtractVariable(initializer, after, nonMappedLeavesT2, insideExtractedOrInlinedMethod, refactorings) ||
(initializer.toString().equals("(" + declaration.getType() + ")" + after) && !containsVariableNameReplacement(variableName)) ||
ternaryMatch(initializer, after) ||
infixOperandMatch(initializer, after) ||
wrappedAsArgument(initializer, after) ||
stringConcatMatch(initializer, after) ||
reservedTokenMatch(initializer, replacement, after) ||
anonymousWithMethodSignatureChange(initializer, after, classDiff)) {
InlineVariableRefactoring ref = new InlineVariableRefactoring(declaration, operation1, operation2, insideExtractedOrInlinedMethod);
List subExpressions = getFragment2().findExpression(after);
for(LeafExpression subExpression : subExpressions) {
LeafMapping leafMapping = new LeafMapping(initializer, subExpression, operation1, operation2);
ref.addSubExpressionMapping(leafMapping);
}
if(infixOperandMatch(initializer, after)) {
List infixExpressions = initializer.getInfixExpressions();
for(LeafExpression infixExpression : infixExpressions) {
if(infixExpression.getString().contains(JAVA.STRING_CONCATENATION)) {
List operands = Arrays.asList(StringBasedHeuristics.SPLIT_CONCAT_STRING_PATTERN.split(infixExpression.getString()));
for(String operand : operands) {
List leafExpressions1 = initializer.findExpression(operand);
List leafExpressions2 = fragment2.findExpression(operand);
if(leafExpressions1.size() == leafExpressions2.size()) {
for(int i=0; i operands = Arrays.asList(StringBasedHeuristics.SPLIT_CONCAT_STRING_PATTERN.split(initializer.getString()));
List leafMappings = new ArrayList();
StringBuilder concatenated = new StringBuilder();
for(String operand : operands) {
List leafExpressions1 = initializer.findExpression(operand);
List leafExpressions2 = fragment2.findExpression(after);
if(leafExpressions1.size() == leafExpressions2.size() && leafExpressions1.size() == 1) {
LeafMapping leafMapping = new LeafMapping(leafExpressions1.get(0), leafExpressions2.get(0), operation1, operation2);
leafMappings.add(leafMapping);
}
if(operand.startsWith("\"") && operand.endsWith("\"")) {
concatenated.append(operand.substring(1, operand.length()-1));
}
else {
concatenated.append(operand);
}
}
if(after.contains(concatenated)) {
for(LeafMapping leafMapping : leafMappings) {
ref.addSubExpressionMapping(leafMapping);
}
}
}
}
processInlineVariableRefactoring(ref, refactorings);
if(identical()) {
identicalWithInlinedVariable = true;
}
return;
}
}
}
if(classDiff != null && getFragment1().getVariableDeclarations().size() > 0 && initializer != null && getFragment1().getVariableDeclarations().toString().equals(getFragment2().getVariableDeclarations().toString())) {
VariableDeclaration variableDeclaration2 = getFragment2().getVariableDeclarations().get(0);
if(variableDeclaration2.getInitializer() != null && variableDeclaration2.getInitializer().toString().contains(initializer.toString())) {
boolean callToAddedOperation = false;
boolean callToDeletedOperation = false;
AbstractCall invocationCoveringTheEntireStatement1 = getFragment1().invocationCoveringEntireFragment();
if(invocationCoveringTheEntireStatement1 != null) {
callToDeletedOperation = classDiff.matchesOperation(invocationCoveringTheEntireStatement1, classDiff.getRemovedOperations(), operation1) != null;
}
AbstractCall invocationCoveringTheEntireStatement2 = getFragment2().invocationCoveringEntireFragment();
if(invocationCoveringTheEntireStatement2 != null) {
callToAddedOperation = classDiff.matchesOperation(invocationCoveringTheEntireStatement2, classDiff.getAddedOperations(), operation2) != null;
}
boolean equalInvocations = invocationCoveringTheEntireStatement1 != null && invocationCoveringTheEntireStatement2 != null &&
(invocationCoveringTheEntireStatement1.equals(invocationCoveringTheEntireStatement2) || containsOnlyReplacement(ReplacementType.METHOD_INVOCATION_NAME));
if(callToAddedOperation != callToDeletedOperation && !equalInvocations) {
InlineVariableRefactoring ref = new InlineVariableRefactoring(declaration, operation1, operation2, insideExtractedOrInlinedMethod);
List subExpressions = getFragment2().findExpression(initializer.toString());
for(LeafExpression subExpression : subExpressions) {
LeafMapping leafMapping = new LeafMapping(initializer, subExpression, operation1, operation2);
ref.addSubExpressionMapping(leafMapping);
}
processInlineVariableRefactoring(ref, refactorings);
return;
}
}
}
}
String argumentizedString = statement.getArgumentizedString();
if(argumentizedString.contains(JAVA.ASSIGNMENT) && (statement.getLocationInfo().before(fragment1.getLocationInfo()) || fragment1.getLocationInfo().getCodeElementType().equals(CodeElementType.DO_STATEMENT))) {
String beforeAssignment = argumentizedString.substring(0, argumentizedString.indexOf(JAVA.ASSIGNMENT));
String[] tokens = beforeAssignment.split("\\s");
String variable = tokens[tokens.length-1];
String initializer = null;
if(argumentizedString.endsWith(JAVA.STATEMENT_TERMINATION)) {
initializer = argumentizedString.substring(argumentizedString.indexOf(JAVA.ASSIGNMENT)+1, argumentizedString.length()-JAVA.STATEMENT_TERMINATION.length());
}
else {
initializer = argumentizedString.substring(argumentizedString.indexOf(JAVA.ASSIGNMENT)+1, argumentizedString.length());
}
for(Replacement replacement : getReplacements()) {
if(variable.endsWith(replacement.getBefore()) && initializer.equals(replacement.getAfter())) {
List variableDeclarations = operation1.getVariableDeclarationsInScope(fragment1.getLocationInfo());
for(VariableDeclaration declaration : variableDeclarations) {
if(declaration.getVariableName().equals(variable)) {
InlineVariableRefactoring ref = new InlineVariableRefactoring(declaration, operation1, operation2, insideExtractedOrInlinedMethod);
List subExpressions = getFragment2().findExpression(replacement.getAfter());
for(LeafExpression subExpression : subExpressions) {
List initializerSubExpressions = statement.findExpression(initializer);
if(initializerSubExpressions.size() > 0) {
LeafMapping leafMapping = new LeafMapping(initializerSubExpressions.get(0), subExpression, operation1, operation2);
ref.addSubExpressionMapping(leafMapping);
}
}
processInlineVariableRefactoring(ref, refactorings);
if(identical()) {
identicalWithInlinedVariable = true;
}
return;
}
}
}
}
}
}
private boolean identical() {
if(getReplacements().size() == 1 && fragment1.getVariableDeclarations().size() == fragment2.getVariableDeclarations().size()) {
return true;
}
if(fragment1.getVariableDeclarations().size() == fragment2.getVariableDeclarations().size() && fragment2.getTernaryOperatorExpressions().size() > 0) {
TernaryOperatorExpression ternary = fragment2.getTernaryOperatorExpressions().get(0);
AbstractExpression thenExpression = ternary.getThenExpression();
AbstractCodeFragment elseExpression = ternary.getElseExpression();
String temp = new String(fragment1.getString());
if(replacements.size() > 0) {
Replacement r = replacements.iterator().next();
for(Refactoring ref : refactorings) {
if(ref instanceof ExtractVariableRefactoring) {
ExtractVariableRefactoring extract = (ExtractVariableRefactoring)ref;
if(extract.getVariableDeclaration().getInitializer() != null &&
extract.getVariableDeclaration().getInitializer().getString().equals(r.getBefore())) {
temp = ReplacementUtil.performReplacement(temp, r.getBefore(), r.getAfter());
if(temp.endsWith(elseExpression.getString() + JAVA.STATEMENT_TERMINATION)) {
return true;
}
if(temp.endsWith(thenExpression.getString() + JAVA.STATEMENT_TERMINATION)) {
return true;
}
}
}
}
}
}
int stringLiteralReplacents = 0;
for(Replacement r : replacements) {
if((r.getBefore().startsWith("\"") && r.getBefore().endsWith("\"")) || (r.getAfter().startsWith("\"") && r.getAfter().endsWith("\""))) {
stringLiteralReplacents++;
}
}
if(stringLiteralReplacents == replacements.size()) {
return true;
}
if(refactorings.size() > 1) {
String temp = new String(fragment1.getString());
for(Refactoring ref : refactorings) {
if(ref instanceof InlineVariableRefactoring) {
InlineVariableRefactoring inline = (InlineVariableRefactoring)ref;
for(Replacement r : replacements) {
if(inline.getVariableDeclaration().getInitializer() != null &&
inline.getVariableDeclaration().getInitializer().getString().equals(r.getAfter())) {
if(r.getBefore().equals(inline.getVariableDeclaration().getVariableName())) {
temp = ReplacementUtil.performReplacement(temp, inline.getVariableDeclaration().getVariableName(), r.getAfter());
}
else {
temp = ReplacementUtil.performReplacement(temp, inline.getVariableDeclaration().getVariableName(), r.getBefore());
}
}
}
}
}
if(temp.equals(fragment2.getString())) {
return true;
}
}
if(getReplacements().size() == 2 && fragment1.getVariableDeclarations().size() == fragment2.getVariableDeclarations().size()) {
boolean listToArrayConversion = false;
boolean identicalCallWithExtraArguments = false;
for(Replacement r : replacements) {
if(r instanceof VariableReplacementWithMethodInvocation) {
VariableReplacementWithMethodInvocation replacement = (VariableReplacementWithMethodInvocation)r;
AbstractCall call = replacement.getInvokedOperation();
if(call.getName().equals("toArray") && call.getExpression() != null) {
if(replacement.getDirection().equals(Direction.VARIABLE_TO_INVOCATION) && call.getExpression().equals(r.getBefore())) {
listToArrayConversion = true;
}
else if(replacement.getDirection().equals(Direction.INVOCATION_TO_VARIABLE) && call.getExpression().equals(r.getAfter())) {
listToArrayConversion = true;
}
}
}
else if(r instanceof MethodInvocationReplacement) {
MethodInvocationReplacement replacement = (MethodInvocationReplacement)r;
AbstractCall before = replacement.getInvokedOperationBefore();
AbstractCall after = replacement.getInvokedOperationAfter();
if(before.identicalName(after) && before.argumentIntersection(after).size() == Math.min(before.arguments().size(), after.arguments().size())) {
identicalCallWithExtraArguments = true;
}
}
}
if(listToArrayConversion || identicalCallWithExtraArguments) {
return true;
}
}
return false;
}
private boolean wrappedAsArgument(AbstractExpression initializer, String replacedExpression) {
int replacementCount = 0;
for(Replacement r : replacements) {
if(r.getBefore().equals(replacedExpression) || r.getAfter().equals(replacedExpression)) {
replacementCount++;
}
}
if(replacementCount > 1) {
return false;
}
AbstractCall invocation = initializer.invocationCoveringEntireFragment();
if(invocation != null) {
if(invocation.arguments().contains(replacedExpression)) {
return true;
}
String expression = invocation.getExpression();
if(expression != null && (expression.equals(replacedExpression) || ReplacementUtil.contains(expression, replacedExpression))) {
boolean subExpressionIsCallToSameMethod = false;
if(invocation instanceof OperationInvocation) {
String subExpression = ((OperationInvocation)invocation).subExpressionIsCallToSameMethod();
if(subExpression != null && ReplacementUtil.contains(subExpression, replacedExpression)) {
subExpressionIsCallToSameMethod = true;
}
}
if(!subExpressionIsCallToSameMethod) {
return true;
}
}
}
ObjectCreation creation = initializer.creationCoveringEntireFragment();
if(creation != null) {
if(creation.arguments().contains(replacedExpression)) {
return true;
}
}
return false;
}
private boolean infixOperandMatch(AbstractExpression initializer, String replacedExpression) {
List infixExpressions = initializer.getInfixExpressions();
for(LeafExpression infixExpression : infixExpressions) {
String infix = infixExpression.getString();
if(infix.startsWith(replacedExpression) || infix.endsWith(replacedExpression)) {
return true;
}
}
return false;
}
private boolean ternaryMatch(AbstractExpression initializer, String replacedExpression) {
List ternaryList = initializer.getTernaryOperatorExpressions();
for(TernaryOperatorExpression ternary : ternaryList) {
if(ternary.getThenExpression().toString().equals(replacedExpression) || ternary.getElseExpression().toString().equals(replacedExpression)) {
return true;
}
}
return false;
}
private boolean stringConcatMatch(AbstractExpression initializer, String replacedExpression) {
String s1 = initializer.getString();
String s2 = replacedExpression;
if(s1.contains(JAVA.STRING_CONCATENATION) && s2.contains(JAVA.STRING_CONCATENATION)) {
Set tokens1 = new LinkedHashSet(Arrays.asList(StringBasedHeuristics.SPLIT_CONCAT_STRING_PATTERN.split(s1)));
Set tokens2 = new LinkedHashSet(Arrays.asList(StringBasedHeuristics.SPLIT_CONCAT_STRING_PATTERN.split(s2)));
Set intersection = new LinkedHashSet(tokens1);
intersection.retainAll(tokens2);
return intersection.size() == Math.min(tokens1.size(), tokens2.size());
}
else if(s1.contains(JAVA.STRING_CONCATENATION) && !s2.contains(JAVA.STRING_CONCATENATION)) {
List tokens1 = Arrays.asList(StringBasedHeuristics.SPLIT_CONCAT_STRING_PATTERN.split(s1));
StringBuilder concatenated = new StringBuilder();
for(int i=0; i= 2) {
concatenated.append(token.substring(1, token.length()-1));
}
else {
concatenated.append(token);
}
}
if(s2.contains(concatenated)) {
return true;
}
}
else if(!s1.contains(JAVA.STRING_CONCATENATION) && s2.contains(JAVA.STRING_CONCATENATION)) {
List tokens2 = Arrays.asList(StringBasedHeuristics.SPLIT_CONCAT_STRING_PATTERN.split(s2));
StringBuilder concatenated = new StringBuilder();
for(int i=0; i= 2) {
concatenated.append(token.substring(1, token.length()-1));
}
else {
concatenated.append(token);
}
}
if(s1.contains(concatenated)) {
return true;
}
}
return false;
}
private boolean containsVariableNameReplacement(String variableName) {
for(Replacement replacement : getReplacements()) {
if(replacement.getType().equals(ReplacementType.VARIABLE_NAME)) {
if(replacement.getBefore().equals(variableName) || replacement.getAfter().equals(variableName)) {
return true;
}
}
}
return false;
}
private boolean reservedTokenMatch(AbstractExpression initializer, Replacement replacement, String replacedExpression) {
AbstractCall initializerInvocation = initializer.invocationCoveringEntireFragment();
AbstractCall replacementInvocation = replacement instanceof VariableReplacementWithMethodInvocation ? ((VariableReplacementWithMethodInvocation)replacement).getInvokedOperation() : null;
boolean methodInvocationMatch = true;
if(initializerInvocation != null && replacementInvocation != null) {
if(!initializerInvocation.getName().equals(replacementInvocation.getName())) {
methodInvocationMatch = false;
}
if(initializerInvocation.identicalName(replacementInvocation) && initializerInvocation.identicalExpression(replacementInvocation)) {
MethodInvocationReplacement r = new MethodInvocationReplacement(replacementInvocation.actualString(), initializerInvocation.actualString(), replacementInvocation, initializerInvocation, ReplacementType.METHOD_INVOCATION_ARGUMENT);
this.replacements.add(r);
return true;
}
}
else if(initializerInvocation != null && replacementInvocation == null) {
methodInvocationMatch = false;
}
else if(initializerInvocation == null && replacementInvocation != null) {
methodInvocationMatch = false;
}
AbstractCall initializerCreation = initializer.creationCoveringEntireFragment();
String replacementCreation = replacement.getType().equals(ReplacementType.VARIABLE_REPLACED_WITH_CLASS_INSTANCE_CREATION) ? replacement.getAfter() : null;
if(initializerCreation != null && replacementCreation != null) {
if(replacementCreation.startsWith("new " + initializerCreation.getName())) {
List arguments = initializerCreation.arguments();
int matchingArguments = 0;
for(String argument : arguments) {
if(replacementCreation.contains(argument)) {
matchingArguments++;
}
}
if(matchingArguments == arguments.size()) {
return true;
}
}
}
String initializerReservedTokens = ReplacementUtil.keepReservedTokens(initializer.toString());
String replacementReservedTokens = ReplacementUtil.keepReservedTokens(replacedExpression);
return methodInvocationMatch && !initializerReservedTokens.isEmpty() && !initializerReservedTokens.equals("[]") && !initializerReservedTokens.equals(".()") && !initializerReservedTokens.equals(" ()") && initializerReservedTokens.equals(replacementReservedTokens);
}
private void processInlineVariableRefactoring(InlineVariableRefactoring ref, Set refactorings) {
if(!refactorings.contains(ref)) {
ref.addReference(this);
refactorings.add(ref);
}
else {
for(Refactoring refactoring : refactorings) {
if(refactoring.equals(ref)) {
InlineVariableRefactoring inlineVariableRefactoring = (InlineVariableRefactoring)refactoring;
inlineVariableRefactoring.addReference(this);
for(LeafMapping newLeafMapping : ref.getSubExpressionMappings()) {
inlineVariableRefactoring.addSubExpressionMapping(newLeafMapping);
}
break;
}
}
}
}
private void processExtractVariableRefactoring(ExtractVariableRefactoring ref, Set refactorings) {
if(!refactorings.contains(ref)) {
ref.addReference(this);
refactorings.add(ref);
}
else {
for(Refactoring refactoring : refactorings) {
if(refactoring.equals(ref)) {
ExtractVariableRefactoring extractVariableRefactoring = (ExtractVariableRefactoring)refactoring;
extractVariableRefactoring.addReference(this);
for(LeafMapping newLeafMapping : ref.getSubExpressionMappings()) {
extractVariableRefactoring.addSubExpressionMapping(newLeafMapping);
}
break;
}
}
}
}
private boolean overlappingExtractVariable(AbstractExpression initializer, String input, List nonMappedLeavesT2,
boolean insideExtractedOrInlinedMethod, Set refactorings) {
String output = input;
for(Refactoring ref : refactorings) {
if(ref instanceof ExtractVariableRefactoring) {
ExtractVariableRefactoring extractVariable = (ExtractVariableRefactoring)ref;
VariableDeclaration declaration = extractVariable.getVariableDeclaration();
if(declaration.getInitializer() != null && input.contains(declaration.getInitializer().toString())) {
output = output.replace(declaration.getInitializer().toString(), declaration.getVariableName());
}
}
}
if(initializer.toString().equals(output)) {
return true;
}
String longestCommonSuffix = PrefixSuffixUtils.longestCommonSuffix(initializer.toString(), input);
if(!longestCommonSuffix.isEmpty() && longestCommonSuffix.startsWith(".")) {
String prefix1 = initializer.toString().substring(0, initializer.toString().indexOf(longestCommonSuffix));
String prefix2 = input.substring(0, input.indexOf(longestCommonSuffix));
//skip static variable prefixes
if(prefix1.equals(prefix2) || (!prefix1.toUpperCase().equals(prefix1) && !prefix2.toUpperCase().equals(prefix2))) {
return true;
}
}
String longestCommonPrefix = PrefixSuffixUtils.longestCommonPrefix(initializer.toString(), input);
if(!longestCommonSuffix.isEmpty() && !longestCommonPrefix.isEmpty() &&
!longestCommonPrefix.equals(initializer.toString()) && !longestCommonPrefix.equals(input) &&
!longestCommonSuffix.equals(initializer.toString()) && !longestCommonSuffix.equals(input) &&
longestCommonPrefix.length() + longestCommonSuffix.length() < input.length() &&
longestCommonPrefix.length() + longestCommonSuffix.length() < initializer.toString().length()) {
String s1 = input.substring(longestCommonPrefix.length(), input.lastIndexOf(longestCommonSuffix));
String s2 = initializer.toString().substring(longestCommonPrefix.length(), initializer.toString().lastIndexOf(longestCommonSuffix));
for(AbstractCodeFragment statement : nonMappedLeavesT2) {
VariableDeclaration variable = statement.getVariableDeclaration(s2);
if(variable != null) {
if(variable.getInitializer() != null && variable.getInitializer().toString().equals(s1)) {
ExtractVariableRefactoring ref = new ExtractVariableRefactoring(variable, operation1, operation2, insideExtractedOrInlinedMethod);
List subExpressions = getFragment1().findExpression(s1);
for(LeafExpression subExpression : subExpressions) {
LeafMapping leafMapping = new LeafMapping(subExpression, variable.getInitializer(), operation1, operation2);
ref.addSubExpressionMapping(leafMapping);
}
processExtractVariableRefactoring(ref, refactorings);
return true;
}
List ternaryOperators = statement.getTernaryOperatorExpressions();
for(TernaryOperatorExpression ternaryOperator : ternaryOperators) {
if(ternaryOperator.getThenExpression().toString().equals(s1) ||
ternaryOperator.getElseExpression().toString().equals(s1)) {
ExtractVariableRefactoring ref = new ExtractVariableRefactoring(variable, operation1, operation2, insideExtractedOrInlinedMethod);
List subExpressions = getFragment1().findExpression(s1);
for(LeafExpression subExpression : subExpressions) {
AbstractCodeFragment initializerSubExpression =
ternaryOperator.getThenExpression().toString().equals(s1) ?
ternaryOperator.getThenExpression() : ternaryOperator.getElseExpression();
LeafMapping leafMapping = new LeafMapping(subExpression, initializerSubExpression, operation1, operation2);
ref.addSubExpressionMapping(leafMapping);
}
processExtractVariableRefactoring(ref, refactorings);
return true;
}
}
}
}
}
for(AbstractCodeFragment leaf2 : nonMappedLeavesT2) {
List variableDeclarations = leaf2.getVariableDeclarations();
if(variableDeclarations.size() == 1) {
VariableDeclaration variableDeclaration = variableDeclarations.get(0);
if(variableDeclaration.getInitializer() != null && initializer.findExpression(variableDeclaration.getVariableName()).size() > 0) {
List leafExpressions1 = getFragment1().findExpression(input);
if(leafExpressions1.size() > 0 && variableDeclaration.getInitializer().findExpression(input).size() > 0) {
ExtractVariableRefactoring ref = new ExtractVariableRefactoring(variableDeclaration, operation1, operation2, insideExtractedOrInlinedMethod);
for(LeafExpression subExpression : leafExpressions1) {
LeafMapping leafMapping = new LeafMapping(subExpression, variableDeclaration.getInitializer(), operation1, operation2);
ref.addSubExpressionMapping(leafMapping);
}
processExtractVariableRefactoring(ref, refactorings);
return true;
}
}
}
}
return false;
}
public Set commonReplacements(AbstractCodeMapping other) {
Set intersection = new LinkedHashSet(this.replacements);
intersection.retainAll(other.replacements);
return intersection;
}
public Set getReplacementsInvolvingMethodInvocation() {
Set replacements = new LinkedHashSet();
for(Replacement replacement : getReplacements()) {
if(involvesMethodInvocation(replacement)) {
replacements.add(replacement);
}
}
return replacements;
}
public Pair nestedUnderCatchBlock() {
CompositeStatementObject parent1 = fragment1.getParent();
CompositeStatementObject parent2 = fragment2.getParent();
while(parent1 != null && parent2 != null) {
if(parent1.getLocationInfo().getCodeElementType().equals(CodeElementType.CATCH_CLAUSE) &&
parent2.getLocationInfo().getCodeElementType().equals(CodeElementType.CATCH_CLAUSE)) {
return Pair.of(parent1, parent2);
}
else if(parent1.getLocationInfo().getCodeElementType().equals(CodeElementType.FINALLY_BLOCK) &&
parent2.getLocationInfo().getCodeElementType().equals(CodeElementType.FINALLY_BLOCK)) {
return Pair.of(parent1, parent2);
}
parent1 = parent1.getParent();
parent2 = parent2.getParent();
}
return null;
}
private static boolean involvesMethodInvocation(Replacement replacement) {
return replacement instanceof MethodInvocationReplacement ||
replacement instanceof VariableReplacementWithMethodInvocation ||
replacement instanceof ClassInstanceCreationWithMethodInvocationReplacement ||
replacement instanceof MethodInvocationWithClassInstanceCreationReplacement ||
replacement.getType().equals(ReplacementType.ARGUMENT_REPLACED_WITH_RIGHT_HAND_SIDE_OF_ASSIGNMENT_EXPRESSION) ||
replacement.getType().equals(ReplacementType.ARGUMENT_REPLACED_WITH_RETURN_EXPRESSION) ||
replacement.getType().equals(ReplacementType.ARGUMENT_REPLACED_WITH_METHOD_INVOCATION) ||
replacement.getType().equals(ReplacementType.METHOD_INVOCATION_REPLACED_WITH_CONDITIONAL_EXPRESSION) ||
replacement instanceof IntersectionReplacement ||
replacement.getType().equals(ReplacementType.ANONYMOUS_CLASS_DECLARATION) ||
replacement.getType().equals(ReplacementType.LAMBDA_WITH_BODY_REPLACED_LAMBDA_WITH_EXPRESSION);
}
@Override
public int hashCode() {
final int prime = 31;
int result = 1;
result = prime * result + ((fragment1 == null) ? 0 : fragment1.hashCode());
result = prime * result + ((fragment2 == null) ? 0 : fragment2.hashCode());
result = prime * result + ((operation1 == null) ? 0 : operation1.hashCode());
result = prime * result + ((operation2 == null) ? 0 : operation2.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;
AbstractCodeMapping other = (AbstractCodeMapping) obj;
if (fragment1 == null) {
if (other.fragment1 != null)
return false;
} else if (!fragment1.equals(other.fragment1))
return false;
if (fragment2 == null) {
if (other.fragment2 != null)
return false;
} else if (!fragment2.equals(other.fragment2))
return false;
if (operation1 == null) {
if (other.operation1 != null)
return false;
} else if (!operation1.equals(other.operation1))
return false;
if (operation2 == null) {
if (other.operation2 != null)
return false;
} else if (!operation2.equals(other.operation2))
return false;
return true;
}
}
