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Copy pathBlockTrackerChangeHistory.java
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1748 lines (1707 loc) · 116 KB
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package org.codetracker;
import java.io.IOException;
import java.io.StringReader;
import java.util.*;
import java.util.function.Predicate;
import gr.uom.java.xmi.*;
import gr.uom.java.xmi.diff.*;
import org.apache.commons.io.IOUtils;
import org.apache.commons.lang3.tuple.Pair;
import org.codetracker.api.History;
import org.codetracker.api.History.HistoryInfo;
import org.codetracker.api.Version;
import org.codetracker.change.AbstractChange;
import org.codetracker.change.Change;
import org.codetracker.change.ChangeFactory;
import org.codetracker.change.Introduced;
import org.codetracker.change.block.BlockBodyAdded;
import org.codetracker.change.block.BlockBodyRemoved;
import org.codetracker.change.block.BlockSignatureFormatChange;
import org.codetracker.change.block.ElseBlockAdded;
import org.codetracker.change.block.ElseBlockBodyAdded;
import org.codetracker.change.block.ExpressionChange;
import org.codetracker.change.block.MergeBlock;
import org.codetracker.change.block.ReplaceAnonymousWithLambda;
import org.codetracker.change.block.ReplaceConditionalWithTernary;
import org.codetracker.change.block.ReplaceLoopWithPipeline;
import org.codetracker.change.block.ReplacePipelineWithLoop;
import org.codetracker.change.block.SplitBlock;
import org.codetracker.change.method.BodyChange;
import org.codetracker.element.Block;
import org.codetracker.element.Method;
import org.codetracker.util.Util;
import org.refactoringminer.api.Refactoring;
import com.github.difflib.DiffUtils;
import com.github.difflib.patch.AbstractDelta;
import com.github.difflib.patch.Chunk;
import com.github.difflib.patch.EqualDelta;
import com.github.difflib.patch.InsertDelta;
import com.github.difflib.patch.Patch;
import gr.uom.java.xmi.LocationInfo.CodeElementType;
import gr.uom.java.xmi.decomposition.AbstractCodeFragment;
import gr.uom.java.xmi.decomposition.AbstractCodeMapping;
import gr.uom.java.xmi.decomposition.AbstractExpression;
import gr.uom.java.xmi.decomposition.AnonymousClassDeclarationObject;
import gr.uom.java.xmi.decomposition.CompositeStatementObject;
import gr.uom.java.xmi.decomposition.CompositeStatementObjectMapping;
import gr.uom.java.xmi.decomposition.LambdaExpressionObject;
import gr.uom.java.xmi.decomposition.LeafMapping;
import gr.uom.java.xmi.decomposition.StatementObject;
import gr.uom.java.xmi.decomposition.TryStatementObject;
import gr.uom.java.xmi.decomposition.UMLOperationBodyMapper;
import gr.uom.java.xmi.decomposition.VariableDeclaration;
import static org.codetracker.util.CommentTransitionAnalyzer.*;
public class BlockTrackerChangeHistory extends AbstractChangeHistory<Block> {
private final ChangeHistory<Block> blockChangeHistory = new ChangeHistory<>();
private final String methodName;
private final int methodDeclarationLineNumber;
private final CodeElementType blockType;
private final int blockStartLineNumber;
private final int blockEndLineNumber;
private final Map<Block, BlockTrackerChangeHistory> nested = new LinkedHashMap<Block, BlockTrackerChangeHistory>();
public BlockTrackerChangeHistory(String methodName, int methodDeclarationLineNumber, CodeElementType blockType,
int blockStartLineNumber, int blockEndLineNumber) {
this.methodName = methodName;
this.methodDeclarationLineNumber = methodDeclarationLineNumber;
this.blockType = blockType;
this.blockStartLineNumber = blockStartLineNumber;
this.blockEndLineNumber = blockEndLineNumber;
}
public ChangeHistory<Block> get() {
return blockChangeHistory;
}
public String getMethodName() {
return methodName;
}
public int getMethodDeclarationLineNumber() {
return methodDeclarationLineNumber;
}
public CodeElementType getBlockType() {
return blockType;
}
public int getBlockStartLineNumber() {
return blockStartLineNumber;
}
public int getBlockEndLineNumber() {
return blockEndLineNumber;
}
public Map<Block, BlockTrackerChangeHistory> getNested() {
return nested;
}
public boolean isStartBlock(Block block) {
return block.getComposite().getLocationInfo().getCodeElementType().equals(blockType) &&
block.getComposite().getLocationInfo().getStartLine() == blockStartLineNumber &&
block.getComposite().getLocationInfo().getEndLine() == blockEndLineNumber;
}
public boolean isStartMethod(Method method) {
return method.getUmlOperation().getName().equals(methodName) &&
method.getUmlOperation().getLocationInfo().getStartLine() <= methodDeclarationLineNumber &&
method.getUmlOperation().getLocationInfo().getEndLine() >= methodDeclarationLineNumber;
}
public boolean checkClassDiffForBlockChange(Version currentVersion, Version parentVersion, Predicate<Method> equalMethod, Predicate<Block> equalBlock, UMLAbstractClassDiff umlClassDiff) {
for (UMLOperationBodyMapper operationBodyMapper : umlClassDiff.getOperationBodyMapperList()) {
Method method2 = Method.of(operationBodyMapper.getContainer2(), currentVersion);
if (equalMethod.test(method2)) {
if (isBlockRefactored(operationBodyMapper.getRefactoringsAfterPostProcessing(), currentVersion, parentVersion, equalBlock))
return true;
// check if it is in the matched
if (isMatched(operationBodyMapper, currentVersion, parentVersion, equalBlock))
return true;
//Check if is added
if (isAdded(operationBodyMapper, currentVersion, parentVersion, equalBlock))
return true;
}
}
return false;
}
public boolean isMergeMultiMapping(Version currentVersion, Version parentVersion, Predicate<Method> equalMethod, Block rightBlock, List<Refactoring> refactorings) {
Set<Pair<Block, Block>> mappings = new LinkedHashSet<>();
AbstractCodeFragment fragment2 = null;
int fragment2Matches = 0;
MergeOperationRefactoring mergeOperationRefactoring = null;
for (Refactoring refactoring : refactorings) {
switch (refactoring.getRefactoringType()) {
case MERGE_OPERATION: {
mergeOperationRefactoring = (MergeOperationRefactoring) refactoring;
Method methodAfter = Method.of(mergeOperationRefactoring.getNewMethodAfterMerge(), currentVersion);
if (equalMethod.test(methodAfter)) {
for (UMLOperationBodyMapper bodyMapper : mergeOperationRefactoring.getMappers()) {
for (AbstractCodeMapping mapping : bodyMapper.getMappings()) {
if (mapping instanceof CompositeStatementObjectMapping) {
Block matchedBlockInsideMergedMethodBody = Block.of((CompositeStatementObject) mapping.getFragment2(), bodyMapper.getContainer2(), currentVersion);
if (matchedBlockInsideMergedMethodBody.equalIdentifierIgnoringVersion(rightBlock)) {
Block blockBefore = Block.of((CompositeStatementObject) mapping.getFragment1(), bodyMapper.getContainer1(), parentVersion);
mappings.add(Pair.of(blockBefore, matchedBlockInsideMergedMethodBody));
if (fragment2 == null) {
fragment2 = mapping.getFragment2();
}
else if (fragment2.equals(mapping.getFragment2())) {
fragment2Matches++;
}
}
}
else if (mapping instanceof LeafMapping && mapping.getFragment1() instanceof StatementObject && mapping.getFragment2() instanceof StatementObject) {
Block matchedBlockInsideMergedMethodBody = Block.of((StatementObject) mapping.getFragment2(), bodyMapper.getContainer2(), currentVersion);
if (matchedBlockInsideMergedMethodBody.equalIdentifierIgnoringVersion(rightBlock)) {
Block blockBefore = Block.of((StatementObject) mapping.getFragment1(), bodyMapper.getContainer1(), parentVersion);
mappings.add(Pair.of(blockBefore, matchedBlockInsideMergedMethodBody));
if (fragment2 == null) {
fragment2 = mapping.getFragment2();
}
else if (fragment2.equals(mapping.getFragment2())) {
fragment2Matches++;
}
}
}
}
}
}
break;
}
}
}
if (mappings.size() > 1 && mappings.size() == fragment2Matches + 1) {
for (Pair<Block, Block> pair : mappings) {
blockChangeHistory.handleAdd(pair.getLeft(), pair.getRight(), mergeOperationRefactoring.toString());
elements.add(pair.getLeft());
}
blockChangeHistory.connectRelatedNodes();
return true;
}
return false;
}
public boolean checkForExtractionOrInline(Version currentVersion, Version parentVersion, Predicate<Method> equalMethod, Block rightBlock, List<Refactoring> refactorings) {
int extractMatches = 0;
for (Refactoring refactoring : refactorings) {
switch (refactoring.getRefactoringType()) {
case EXTRACT_AND_MOVE_OPERATION:
case EXTRACT_OPERATION: {
ExtractOperationRefactoring extractOperationRefactoring = (ExtractOperationRefactoring) refactoring;
Method extractedMethod = Method.of(extractOperationRefactoring.getExtractedOperation(), currentVersion);
if (equalMethod.test(extractedMethod)) {
AbstractCodeFragment matchedBlockFromSourceMethod = null;
UMLOperationBodyMapper bodyMapper = extractOperationRefactoring.getBodyMapper();
for (AbstractCodeMapping mapping : bodyMapper.getMappings()) {
if (mapping instanceof CompositeStatementObjectMapping) {
Block matchedBlockInsideExtractedMethodBody = Block.of((CompositeStatementObject) mapping.getFragment2(), bodyMapper.getContainer2(), currentVersion);
if (matchedBlockInsideExtractedMethodBody.equalIdentifierIgnoringVersion(rightBlock)) {
matchedBlockFromSourceMethod = (CompositeStatementObject) mapping.getFragment1();
Block blockBefore = Block.of((CompositeStatementObject) mapping.getFragment1(), bodyMapper.getContainer1(), parentVersion);
List<String> stringRepresentationBefore = blockBefore.getComposite().stringRepresentation();
List<String> stringRepresentationAfter = matchedBlockInsideExtractedMethodBody.getComposite().stringRepresentation();
if (!stringRepresentationBefore.equals(stringRepresentationAfter)) {
handleCompositeExpressionChange(blockBefore,
matchedBlockInsideExtractedMethodBody, stringRepresentationBefore,
stringRepresentationAfter);
List<String> stringRepresentationBodyBefore = stringRepresentationBefore.subList(1, stringRepresentationBefore.size());
List<String> stringRepresentationBodyAfter = stringRepresentationAfter.subList(1, stringRepresentationAfter.size());
if (!stringRepresentationBodyBefore.equals(stringRepresentationBodyAfter)) {
blockChangeHistory.addChange(blockBefore, matchedBlockInsideExtractedMethodBody, ChangeFactory.forBlock(Change.Type.BODY_CHANGE));
}
}
break;
}
}
else if (mapping instanceof LeafMapping && mapping.getFragment1() instanceof StatementObject && mapping.getFragment2() instanceof StatementObject) {
Block matchedBlockInsideExtractedMethodBody = Block.of((StatementObject) mapping.getFragment2(), bodyMapper.getContainer2(), currentVersion);
if (matchedBlockInsideExtractedMethodBody.equalIdentifierIgnoringVersion(rightBlock)) {
matchedBlockFromSourceMethod = mapping.getFragment1();
Block blockBefore = Block.of((StatementObject) mapping.getFragment1(), bodyMapper.getContainer1(), parentVersion);
if (!blockBefore.getComposite().getString().equals(matchedBlockInsideExtractedMethodBody.getComposite().getString())) {
addStatementChange(blockBefore, matchedBlockInsideExtractedMethodBody, ChangeFactory.forBlock(Change.Type.BODY_CHANGE));
}
else {
if(blockBefore.differInFormatting(matchedBlockInsideExtractedMethodBody)) {
addStatementChange(blockBefore, matchedBlockInsideExtractedMethodBody, ChangeFactory.forBlock(Change.Type.SIGNATURE_FORMAT_CHANGE));
}
else {
blockChangeHistory.addChange(blockBefore, matchedBlockInsideExtractedMethodBody, ChangeFactory.of(AbstractChange.Type.NO_CHANGE));
}
}
break;
}
}
}
Block blockBefore = Block.of(rightBlock.getComposite(), rightBlock.getOperation(), parentVersion);
if (matchedBlockFromSourceMethod == null) {
blockChangeHistory.handleAdd(blockBefore, rightBlock, extractOperationRefactoring.toString());
if(extractMatches == 0) {
elements.add(blockBefore);
}
}
else {
VariableDeclarationContainer sourceOperation = extractOperationRefactoring.getSourceOperationBeforeExtraction();
Method sourceMethod = Method.of(sourceOperation, parentVersion);
Block leftBlock = Block.of(matchedBlockFromSourceMethod instanceof StatementObject ? (StatementObject) matchedBlockFromSourceMethod : (CompositeStatementObject) matchedBlockFromSourceMethod, sourceMethod);
if(extractMatches == 0) {
elements.add(leftBlock);
}
}
blockChangeHistory.connectRelatedNodes();
extractMatches++;
}
UMLOperationBodyMapper mapper = extractOperationRefactoring.getBodyMapper();
Set<UMLAnonymousClassDiff> anonymousClassDiffs = mapper.getAnonymousClassDiffs();
for (UMLAnonymousClassDiff diff : anonymousClassDiffs) {
for (UMLOperationBodyMapper anonymousMapper : diff.getOperationBodyMapperList()) {
Method anonymousExtractedOperationAfter = Method.of(anonymousMapper.getContainer2(), currentVersion);
if (equalMethod.test(anonymousExtractedOperationAfter)) {
AbstractCodeFragment matchedBlockFromSourceMethod = null;
for (AbstractCodeMapping mapping : anonymousMapper.getMappings()) {
if (mapping instanceof CompositeStatementObjectMapping) {
Block matchedBlockInsideExtractedMethodBody = Block.of((CompositeStatementObject) mapping.getFragment2(), anonymousMapper.getContainer2(), currentVersion);
if (matchedBlockInsideExtractedMethodBody.equalIdentifierIgnoringVersion(rightBlock)) {
matchedBlockFromSourceMethod = (CompositeStatementObject) mapping.getFragment1();
Block blockBefore = Block.of((CompositeStatementObject) mapping.getFragment1(), anonymousMapper.getContainer1(), parentVersion);
List<String> stringRepresentationBefore = blockBefore.getComposite().stringRepresentation();
List<String> stringRepresentationAfter = matchedBlockInsideExtractedMethodBody.getComposite().stringRepresentation();
if (!stringRepresentationBefore.equals(stringRepresentationAfter)) {
handleCompositeExpressionChange(blockBefore,
matchedBlockInsideExtractedMethodBody,
stringRepresentationBefore, stringRepresentationAfter);
List<String> stringRepresentationBodyBefore = stringRepresentationBefore.subList(1, stringRepresentationBefore.size());
List<String> stringRepresentationBodyAfter = stringRepresentationAfter.subList(1, stringRepresentationAfter.size());
if (!stringRepresentationBodyBefore.equals(stringRepresentationBodyAfter)) {
blockChangeHistory.addChange(blockBefore, matchedBlockInsideExtractedMethodBody, ChangeFactory.forBlock(Change.Type.BODY_CHANGE));
}
}
break;
}
}
else if (mapping instanceof LeafMapping && mapping.getFragment1() instanceof StatementObject && mapping.getFragment2() instanceof StatementObject) {
Block matchedBlockInsideExtractedMethodBody = Block.of((StatementObject) mapping.getFragment2(), anonymousMapper.getContainer2(), currentVersion);
if (matchedBlockInsideExtractedMethodBody.equalIdentifierIgnoringVersion(rightBlock)) {
matchedBlockFromSourceMethod = mapping.getFragment1();
Block blockBefore = Block.of((StatementObject) mapping.getFragment1(), anonymousMapper.getContainer1(), parentVersion);
if (!blockBefore.getComposite().getString().equals(matchedBlockInsideExtractedMethodBody.getComposite().getString())) {
addStatementChange(blockBefore, matchedBlockInsideExtractedMethodBody, ChangeFactory.forBlock(Change.Type.BODY_CHANGE));
}
else {
if(blockBefore.differInFormatting(matchedBlockInsideExtractedMethodBody)) {
addStatementChange(blockBefore, matchedBlockInsideExtractedMethodBody, ChangeFactory.forBlock(Change.Type.SIGNATURE_FORMAT_CHANGE));
}
else {
blockChangeHistory.addChange(blockBefore, matchedBlockInsideExtractedMethodBody, ChangeFactory.of(AbstractChange.Type.NO_CHANGE));
}
}
break;
}
}
}
if (matchedBlockFromSourceMethod == null) {
Block blockBefore = Block.of(rightBlock.getComposite(), rightBlock.getOperation(), parentVersion);
blockChangeHistory.handleAdd(blockBefore, rightBlock, extractOperationRefactoring.toString());
if(extractMatches == 0) {
elements.add(blockBefore);
}
}
else {
VariableDeclarationContainer sourceOperation = anonymousMapper.getContainer1();
Method sourceMethod = Method.of(sourceOperation, parentVersion);
Block leftBlock = Block.of(matchedBlockFromSourceMethod instanceof StatementObject ? (StatementObject) matchedBlockFromSourceMethod : (CompositeStatementObject) matchedBlockFromSourceMethod, sourceMethod);
if(extractMatches == 0) {
elements.add(leftBlock);
}
}
blockChangeHistory.connectRelatedNodes();
extractMatches++;
}
}
}
break;
}
case REPLACE_ANONYMOUS_WITH_CLASS: {
ReplaceAnonymousWithClassRefactoring anonymousWithClassRefactoring = (ReplaceAnonymousWithClassRefactoring)refactoring;
for (UMLOperationBodyMapper bodyMapper : anonymousWithClassRefactoring.getDiff().getOperationBodyMapperList()) {
VariableDeclarationContainer extractedOperation = bodyMapper.getContainer2();
Method extractedOperationAfter = Method.of(extractedOperation, currentVersion);
if (equalMethod.test(extractedOperationAfter)) {
for (AbstractCodeMapping mapping : bodyMapper.getMappings()) {
if (mapping instanceof CompositeStatementObjectMapping) {
Block matchedBlockInsideExtractedMethodBody = Block.of((CompositeStatementObject) mapping.getFragment2(), bodyMapper.getContainer2(), currentVersion);
if (matchedBlockInsideExtractedMethodBody.equalIdentifierIgnoringVersion(rightBlock)) {
addedMethod(extractedOperationAfter, matchedBlockInsideExtractedMethodBody, parentVersion);
}
}
else if (mapping instanceof LeafMapping && mapping.getFragment1() instanceof StatementObject && mapping.getFragment2() instanceof StatementObject) {
Block matchedBlockInsideExtractedMethodBody = Block.of((StatementObject) mapping.getFragment2(), bodyMapper.getContainer2(), currentVersion);
if (matchedBlockInsideExtractedMethodBody.equalIdentifierIgnoringVersion(rightBlock)) {
addedMethod(extractedOperationAfter, matchedBlockInsideExtractedMethodBody, parentVersion);
}
}
}
}
}
break;
}
/*
case REPLACE_ANONYMOUS_WITH_CLASS: {
ReplaceAnonymousWithClassRefactoring anonymousWithClassRefactoring = (ReplaceAnonymousWithClassRefactoring)refactoring;
for (UMLOperationBodyMapper bodyMapper : anonymousWithClassRefactoring.getDiff().getOperationBodyMapperList()) {
VariableDeclarationContainer extractedOperation = bodyMapper.getContainer2();
Method extractedOperationAfter = Method.of(extractedOperation, currentVersion);
if (equalMethod.test(extractedOperationAfter)) {
AbstractCodeFragment matchedBlockFromSourceMethod = null;
for (AbstractCodeMapping mapping : bodyMapper.getMappings()) {
if (mapping instanceof CompositeStatementObjectMapping) {
Block matchedBlockInsideExtractedMethodBody = Block.of((CompositeStatementObject) mapping.getFragment2(), bodyMapper.getContainer2(), currentVersion);
if (matchedBlockInsideExtractedMethodBody.equalIdentifierIgnoringVersion(rightBlock)) {
matchedBlockFromSourceMethod = (CompositeStatementObject) mapping.getFragment1();
Block blockBefore = Block.of((CompositeStatementObject) mapping.getFragment1(), bodyMapper.getContainer1(), parentVersion);
List<String> stringRepresentationBefore = blockBefore.getComposite().stringRepresentation();
List<String> stringRepresentationAfter = matchedBlockInsideExtractedMethodBody.getComposite().stringRepresentation();
if (!stringRepresentationBefore.equals(stringRepresentationAfter)) {
handleCompositeExpressionChange(blockBefore,
matchedBlockInsideExtractedMethodBody, stringRepresentationBefore,
stringRepresentationAfter);
List<String> stringRepresentationBodyBefore = stringRepresentationBefore.subList(1, stringRepresentationBefore.size());
List<String> stringRepresentationBodyAfter = stringRepresentationAfter.subList(1, stringRepresentationAfter.size());
if (!stringRepresentationBodyBefore.equals(stringRepresentationBodyAfter)) {
blockChangeHistory.addChange(blockBefore, matchedBlockInsideExtractedMethodBody, ChangeFactory.forBlock(Change.Type.BODY_CHANGE));
}
}
break;
}
}
else if (mapping instanceof LeafMapping && mapping.getFragment1() instanceof StatementObject && mapping.getFragment2() instanceof StatementObject) {
Block matchedBlockInsideExtractedMethodBody = Block.of((StatementObject) mapping.getFragment2(), bodyMapper.getContainer2(), currentVersion);
if (matchedBlockInsideExtractedMethodBody.equalIdentifierIgnoringVersion(rightBlock)) {
matchedBlockFromSourceMethod = mapping.getFragment1();
Block blockBefore = Block.of((StatementObject) mapping.getFragment1(), bodyMapper.getContainer1(), parentVersion);
if (!blockBefore.getComposite().getString().equals(matchedBlockInsideExtractedMethodBody.getComposite().getString())) {
addStatementChange(blockBefore, matchedBlockInsideExtractedMethodBody, ChangeFactory.forBlock(Change.Type.BODY_CHANGE));
}
else {
if(blockBefore.differInFormatting(matchedBlockInsideExtractedMethodBody)) {
addStatementChange(blockBefore, matchedBlockInsideExtractedMethodBody, ChangeFactory.forBlock(Change.Type.SIGNATURE_FORMAT_CHANGE));
}
else {
blockChangeHistory.addChange(blockBefore, matchedBlockInsideExtractedMethodBody, ChangeFactory.of(AbstractChange.Type.NO_CHANGE));
}
}
break;
}
}
}
if (matchedBlockFromSourceMethod != null) {
VariableDeclarationContainer sourceOperation = bodyMapper.getContainer1();
Method sourceMethod = Method.of(sourceOperation, parentVersion);
Block leftBlock = Block.of(matchedBlockFromSourceMethod instanceof StatementObject ? (StatementObject) matchedBlockFromSourceMethod : (CompositeStatementObject) matchedBlockFromSourceMethod, sourceMethod);
if(extractMatches == 0) {
elements.add(leftBlock);
}
blockChangeHistory.connectRelatedNodes();
extractMatches++;
}
}
}
break;
}
*/
case EXTRACT_FIXTURE:
case MOVE_CODE: {
MoveCodeRefactoring moveCodeRefactoring = (MoveCodeRefactoring) refactoring;
Method extractedMethod = Method.of(moveCodeRefactoring.getTargetContainer(), currentVersion);
if (equalMethod.test(extractedMethod)) {
AbstractCodeFragment matchedBlockFromSourceMethod = null;
UMLOperationBodyMapper bodyMapper = moveCodeRefactoring.getBodyMapper();
for (AbstractCodeMapping mapping : bodyMapper.getMappings()) {
if (mapping instanceof CompositeStatementObjectMapping) {
Block matchedBlockInsideExtractedMethodBody = Block.of((CompositeStatementObject) mapping.getFragment2(), bodyMapper.getContainer2(), currentVersion);
if (matchedBlockInsideExtractedMethodBody.equalIdentifierIgnoringVersion(rightBlock)) {
matchedBlockFromSourceMethod = (CompositeStatementObject) mapping.getFragment1();
Block blockBefore = Block.of((CompositeStatementObject) mapping.getFragment1(), bodyMapper.getContainer1(), parentVersion);
List<String> stringRepresentationBefore = blockBefore.getComposite().stringRepresentation();
List<String> stringRepresentationAfter = matchedBlockInsideExtractedMethodBody.getComposite().stringRepresentation();
if (!stringRepresentationBefore.equals(stringRepresentationAfter)) {
handleCompositeExpressionChange(blockBefore,
matchedBlockInsideExtractedMethodBody, stringRepresentationBefore,
stringRepresentationAfter);
List<String> stringRepresentationBodyBefore = stringRepresentationBefore.subList(1, stringRepresentationBefore.size());
List<String> stringRepresentationBodyAfter = stringRepresentationAfter.subList(1, stringRepresentationAfter.size());
if (!stringRepresentationBodyBefore.equals(stringRepresentationBodyAfter)) {
blockChangeHistory.addChange(blockBefore, matchedBlockInsideExtractedMethodBody, ChangeFactory.forBlock(Change.Type.BODY_CHANGE));
}
}
break;
}
}
else if (mapping instanceof LeafMapping && mapping.getFragment1() instanceof StatementObject && mapping.getFragment2() instanceof StatementObject) {
Block matchedBlockInsideExtractedMethodBody = Block.of((StatementObject) mapping.getFragment2(), bodyMapper.getContainer2(), currentVersion);
if (matchedBlockInsideExtractedMethodBody.equalIdentifierIgnoringVersion(rightBlock)) {
matchedBlockFromSourceMethod = mapping.getFragment1();
Block blockBefore = Block.of((StatementObject) mapping.getFragment1(), bodyMapper.getContainer1(), parentVersion);
if (!blockBefore.getComposite().getString().equals(matchedBlockInsideExtractedMethodBody.getComposite().getString())) {
addStatementChange(blockBefore, matchedBlockInsideExtractedMethodBody, ChangeFactory.forBlock(Change.Type.BODY_CHANGE));
}
else {
if(blockBefore.differInFormatting(matchedBlockInsideExtractedMethodBody)) {
addStatementChange(blockBefore, matchedBlockInsideExtractedMethodBody, ChangeFactory.forBlock(Change.Type.SIGNATURE_FORMAT_CHANGE));
}
else {
blockChangeHistory.addChange(blockBefore, matchedBlockInsideExtractedMethodBody, ChangeFactory.of(AbstractChange.Type.NO_CHANGE));
}
}
break;
}
}
}
if (matchedBlockFromSourceMethod != null) {
VariableDeclarationContainer sourceOperation = moveCodeRefactoring.getSourceContainer();
Method sourceMethod = Method.of(sourceOperation, parentVersion);
Block leftBlock = Block.of(matchedBlockFromSourceMethod instanceof StatementObject ? (StatementObject) matchedBlockFromSourceMethod : (CompositeStatementObject) matchedBlockFromSourceMethod, sourceMethod);
if(extractMatches == 0) {
elements.add(leftBlock);
}
blockChangeHistory.connectRelatedNodes();
extractMatches++;
}
}
break;
}
case MOVE_AND_INLINE_OPERATION:
case INLINE_OPERATION: {
InlineOperationRefactoring inlineOperationRefactoring = (InlineOperationRefactoring) refactoring;
Method targetOperationAfterInline = Method.of(inlineOperationRefactoring.getTargetOperationAfterInline(), currentVersion);
if (equalMethod.test(targetOperationAfterInline)) {
UMLOperationBodyMapper bodyMapper = inlineOperationRefactoring.getBodyMapper();
for (AbstractCodeMapping mapping : bodyMapper.getMappings()) {
if (mapping instanceof CompositeStatementObjectMapping) {
Block matchedBlockInsideInlinedMethodBody = Block.of((CompositeStatementObject) mapping.getFragment2(), bodyMapper.getContainer2(), currentVersion);
if (matchedBlockInsideInlinedMethodBody.equalIdentifierIgnoringVersion(rightBlock)) {
Block blockBefore = Block.of((CompositeStatementObject) mapping.getFragment1(), bodyMapper.getContainer1(), parentVersion);
blockChangeHistory.handleAdd(blockBefore, matchedBlockInsideInlinedMethodBody, inlineOperationRefactoring.toString());
elements.add(blockBefore);
blockChangeHistory.connectRelatedNodes();
return true;
}
}
else if (mapping instanceof LeafMapping && mapping.getFragment1() instanceof StatementObject && mapping.getFragment2() instanceof StatementObject) {
Block matchedBlockInsideInlinedMethodBody = Block.of((StatementObject) mapping.getFragment2(), bodyMapper.getContainer2(), currentVersion);
if (matchedBlockInsideInlinedMethodBody.equalIdentifierIgnoringVersion(rightBlock)) {
Block blockBefore = Block.of((StatementObject) mapping.getFragment1(), bodyMapper.getContainer1(), parentVersion);
blockChangeHistory.handleAdd(blockBefore, matchedBlockInsideInlinedMethodBody, inlineOperationRefactoring.toString());
elements.add(blockBefore);
blockChangeHistory.connectRelatedNodes();
return true;
}
}
}
}
break;
}
case MERGE_OPERATION: {
MergeOperationRefactoring mergeOperationRefactoring = (MergeOperationRefactoring) refactoring;
Method methodAfter = Method.of(mergeOperationRefactoring.getNewMethodAfterMerge(), currentVersion);
if (equalMethod.test(methodAfter)) {
int mergeMatches = 0;
AbstractCodeFragment fragment2 = null;
int fragment2Matches = 0;
for (UMLOperationBodyMapper bodyMapper : mergeOperationRefactoring.getMappers()) {
for (AbstractCodeMapping mapping : bodyMapper.getMappings()) {
if (mapping instanceof CompositeStatementObjectMapping) {
Block matchedBlockInsideMergedMethodBody = Block.of((CompositeStatementObject) mapping.getFragment2(), bodyMapper.getContainer2(), currentVersion);
if (matchedBlockInsideMergedMethodBody.equalIdentifierIgnoringVersion(rightBlock)) {
// implementation for introduced
/*
Block blockBefore = Block.of((CompositeStatementObject) mapping.getFragment1(), bodyMapper.getContainer1(), parentVersion);
blockChangeHistory.handleAdd(blockBefore, matchedBlockInsideMergedMethodBody, mergeOperationRefactoring.toString());
blocks.add(blockBefore);
blockChangeHistory.connectRelatedNodes();
return true;
*/
Set<Refactoring> mapperRefactorings = bodyMapper.getRefactoringsAfterPostProcessing();
//Check if refactored
if (isBlockRefactored(mapperRefactorings, currentVersion, parentVersion, rightBlock::equalIdentifierIgnoringVersion))
mergeMatches++;
// check if it is in the matched
if (isMatched(bodyMapper, currentVersion, parentVersion, rightBlock::equalIdentifierIgnoringVersion))
mergeMatches++;
}
}
else if (mapping instanceof LeafMapping && mapping.getFragment1() instanceof StatementObject && mapping.getFragment2() instanceof StatementObject) {
Block matchedBlockInsideMergedMethodBody = Block.of((StatementObject) mapping.getFragment2(), bodyMapper.getContainer2(), currentVersion);
if (matchedBlockInsideMergedMethodBody.equalIdentifierIgnoringVersion(rightBlock)) {
// implementation for introduced
/*
Block blockBefore = Block.of((StatementObject) mapping.getFragment1(), bodyMapper.getContainer1(), parentVersion);
blockChangeHistory.handleAdd(blockBefore, matchedBlockInsideMergedMethodBody, mergeOperationRefactoring.toString());
blocks.add(blockBefore);
blockChangeHistory.connectRelatedNodes();
return true;
*/
Set<Refactoring> mapperRefactorings = bodyMapper.getRefactoringsAfterPostProcessing();
//Check if refactored
if (isBlockRefactored(mapperRefactorings, currentVersion, parentVersion, rightBlock::equalIdentifierIgnoringVersion))
mergeMatches++;
// check if it is in the matched
if (isMatched(bodyMapper, currentVersion, parentVersion, rightBlock::equalIdentifierIgnoringVersion))
mergeMatches++;
}
}
}
for (CompositeStatementObject composite : bodyMapper.getNonMappedInnerNodesT2()) {
Block blockAfter = Block.of(composite, bodyMapper.getContainer2(), currentVersion);
if (blockAfter.equalIdentifierIgnoringVersion(rightBlock)) {
if (fragment2 == null) {
fragment2 = composite;
}
else if (fragment2.equals(composite)) {
fragment2Matches++;
}
}
}
for (AbstractCodeFragment fragment : bodyMapper.getNonMappedLeavesT2()) {
if (fragment instanceof StatementObject) {
Block blockAfter = Block.of((StatementObject) fragment, bodyMapper.getContainer2(), currentVersion);
if (blockAfter.equalIdentifierIgnoringVersion(rightBlock)) {
if (fragment2 == null) {
fragment2 = fragment;
}
else if (fragment2.equals(fragment)) {
fragment2Matches++;
}
}
}
}
}
if(mergeMatches > 0) {
return true;
}
if(fragment2 != null && mergeOperationRefactoring.getMappers().size() == fragment2Matches + 1) {
Block blockBefore = Block.of(fragment2 instanceof StatementObject ? (StatementObject) fragment2 : (CompositeStatementObject) fragment2, mergeOperationRefactoring.getNewMethodAfterMerge(), parentVersion);
Block blockAfter = Block.of(fragment2 instanceof StatementObject ? (StatementObject) fragment2 : (CompositeStatementObject) fragment2, mergeOperationRefactoring.getNewMethodAfterMerge(), currentVersion);
blockChangeHistory.handleAdd(blockBefore, blockAfter, "new block");
elements.add(blockBefore);
blockChangeHistory.connectRelatedNodes();
return true;
}
}
break;
}
case SPLIT_OPERATION: {
SplitOperationRefactoring splitOperationRefactoring = (SplitOperationRefactoring) refactoring;
for (VariableDeclarationContainer splitMethod : splitOperationRefactoring.getSplitMethods()) {
Method methodAfter = Method.of(splitMethod, currentVersion);
if (equalMethod.test(methodAfter)) {
for (UMLOperationBodyMapper bodyMapper : splitOperationRefactoring.getMappers()) {
for (AbstractCodeMapping mapping : bodyMapper.getMappings()) {
if (mapping instanceof CompositeStatementObjectMapping) {
Block matchedBlockInsideSplitMethodBody = Block.of((CompositeStatementObject) mapping.getFragment2(), bodyMapper.getContainer2(), currentVersion);
if (matchedBlockInsideSplitMethodBody.equalIdentifierIgnoringVersion(rightBlock)) {
// implementation for introduced
/*
Block blockBefore = Block.of((CompositeStatementObject) mapping.getFragment1(), bodyMapper.getContainer1(), parentVersion);
blockChangeHistory.handleAdd(blockBefore, matchedBlockInsideMergedMethodBody, mergeOperationRefactoring.toString());
blocks.add(blockBefore);
blockChangeHistory.connectRelatedNodes();
return true;
*/
Set<Refactoring> mapperRefactorings = bodyMapper.getRefactoringsAfterPostProcessing();
//Check if refactored
if (isBlockRefactored(mapperRefactorings, currentVersion, parentVersion, rightBlock::equalIdentifierIgnoringVersion))
return true;
// check if it is in the matched
if (isMatched(bodyMapper, currentVersion, parentVersion, rightBlock::equalIdentifierIgnoringVersion))
return true;
}
}
else if (mapping instanceof LeafMapping && mapping.getFragment1() instanceof StatementObject && mapping.getFragment2() instanceof StatementObject) {
Block matchedBlockInsideSplitMethodBody = Block.of((StatementObject) mapping.getFragment2(), bodyMapper.getContainer2(), currentVersion);
if (matchedBlockInsideSplitMethodBody.equalIdentifierIgnoringVersion(rightBlock)) {
// implementation for introduced
/*
Block blockBefore = Block.of((StatementObject) mapping.getFragment1(), bodyMapper.getContainer1(), parentVersion);
blockChangeHistory.handleAdd(blockBefore, matchedBlockInsideMergedMethodBody, mergeOperationRefactoring.toString());
blocks.add(blockBefore);
blockChangeHistory.connectRelatedNodes();
return true;
*/
Set<Refactoring> mapperRefactorings = bodyMapper.getRefactoringsAfterPostProcessing();
//Check if refactored
if (isBlockRefactored(mapperRefactorings, currentVersion, parentVersion, rightBlock::equalIdentifierIgnoringVersion))
return true;
// check if it is in the matched
if (isMatched(bodyMapper, currentVersion, parentVersion, rightBlock::equalIdentifierIgnoringVersion))
return true;
}
}
}
}
}
}
break;
}
}
}
if(extractMatches > 0) {
return true;
}
return false;
}
public boolean checkBodyOfMatchedOperations(Version currentVersion, Version parentVersion, Predicate<Block> equalOperator, UMLOperationBodyMapper umlOperationBodyMapper) {
if (umlOperationBodyMapper == null)
return false;
Set<Refactoring> refactorings = umlOperationBodyMapper.getRefactoringsAfterPostProcessing();
//Check if refactored
if (isBlockRefactored(refactorings, currentVersion, parentVersion, equalOperator))
return true;
// check if it is in the matched
if (isMatched(umlOperationBodyMapper, currentVersion, parentVersion, equalOperator))
return true;
//check if block got uncommented
if(isBlockUncommented(umlOperationBodyMapper, currentVersion, parentVersion, equalOperator)){
return true;
}
// Check if is added
return isAdded(umlOperationBodyMapper, currentVersion, parentVersion, equalOperator);
}
public boolean isBlockUncommented(UMLOperationBodyMapper umlOperationBodyMapper, Version currentVersion, Version parentVersion, Predicate<Block> equalOperator) {
List<CompositeStatementObject> currentNonMappedInnerNodes = umlOperationBodyMapper.getNonMappedInnerNodesT2();
UMLCommentListDiff umlCommentListDiff = umlOperationBodyMapper.getCommentListDiff();
List<UMLComment> deletedComments = umlCommentListDiff.getDeletedComments();
if(currentNonMappedInnerNodes.size() == 0 || deletedComments == null || deletedComments.isEmpty())
return false;
Map<String, UMLComment> deletedCommentsHashMap = generateCommentTextHashMap(deletedComments);
for(CompositeStatementObject nonMappedInnerNode : currentNonMappedInnerNodes) {
String hashOfNonMappedInnerNode = Util.getSHA512(nonMappedInnerNode.getActualSignature());
if (!deletedCommentsHashMap.containsKey(hashOfNonMappedInnerNode))
continue;
Block blockAfter = Block.of(nonMappedInnerNode, umlOperationBodyMapper.getContainer2(), currentVersion);
if (!equalOperator.test(blockAfter))
continue;
//check block body continuity
if (!isBlockBodyUnchangedDuringUncomment(umlOperationBodyMapper, nonMappedInnerNode, deletedCommentsHashMap, blockAfter))
continue;
Block virtualBlockBefore = Block.of(nonMappedInnerNode, umlOperationBodyMapper.getContainer2(), parentVersion); // add metadata later, flag isVirtual = true;
blockChangeHistory.addChange(virtualBlockBefore, blockAfter, ChangeFactory.forBlock(Change.Type.UNCOMMENTED_BLOCK));
elements.add(virtualBlockBefore);
blockChangeHistory.connectRelatedNodes();
return true;
}
return false;
}
public boolean isBlockRefactored(Collection<Refactoring> refactorings, Version currentVersion, Version parentVersion, Predicate<Block> equalOperator) {
Set<Block> leftBlockSet = analyseBlockRefactorings(refactorings, currentVersion, parentVersion, equalOperator);
for (Block leftBlock : leftBlockSet) {
elements.add(leftBlock);
blockChangeHistory.connectRelatedNodes();
return true;
}
return false;
}
private void processNestedMappings(Block parentBlockBefore, Block parentBlockAfter, Version currentVersion, Version parentVersion, Set<AbstractCodeMapping> mappings, VariableDeclarationContainer container1, VariableDeclarationContainer container2) {
Block startBlock = getStart();
Map<Integer, Integer> lineAlignment = new LinkedHashMap<Integer, Integer>();
try {
if (startBlock != null && startBlock.isMultiLine()) {
List<String> start = IOUtils.readLines(new StringReader(startBlock.getComposite().getActualSignature()));
List<String> original = IOUtils.readLines(new StringReader(parentBlockBefore.getComposite().getActualSignature()));
List<String> revised = IOUtils.readLines(new StringReader(parentBlockAfter.getComposite().getActualSignature()));
Patch<String> patch = DiffUtils.diff(revised, start, true);
List<AbstractDelta<String>> deltas = patch.getDeltas();
for (int i=0; i<deltas.size(); i++) {
AbstractDelta<String> delta = deltas.get(i);
if (delta instanceof EqualDelta) {
Chunk<String> target = delta.getTarget();
List<String> affectedLines = new ArrayList<>(target.getLines());
for (int j=0; j<affectedLines.size(); j++) {
int leftLine = parentBlockAfter.signatureStartLine() + j;
int rightLine = startBlock.signatureStartLine() + j;
lineAlignment.put(leftLine, rightLine);
}
}
}
}
}
catch(IOException e) {
e.printStackTrace();
}
for (AbstractCodeMapping mapping : mappings) {
if (mapping instanceof LeafMapping && mapping.getFragment1() instanceof StatementObject && mapping.getFragment2() instanceof StatementObject) {
Block blockBefore = Block.of((StatementObject) mapping.getFragment1(), container1, parentVersion);
Block blockAfter = Block.of((StatementObject) mapping.getFragment2(), container2, currentVersion);
int blockStartLine = lineAlignment.get(blockAfter.getLocation().getStartLine());
AbstractCodeFragment fragmentStart = null;
for (LambdaExpressionObject lambda : startBlock.getComposite().getLambdas()) {
if (lambda.getBody() != null) {
for (AbstractCodeFragment f : lambda.getBody().getCompositeStatement().getLeaves()) {
if (f.getLocationInfo().getStartLine() == blockStartLine) {
fragmentStart = f;
break;
}
}
}
}
Block blockStart = Block.of((StatementObject) fragmentStart, startBlock.getOperation(), startBlock.getVersion());
//////
CodeElementType type = blockStart.getLocation().getCodeElementType();
int startLine = blockStart.getLocation().getStartLine();
int endLine = blockStart.getLocation().getEndLine();
BlockTrackerChangeHistory nestedHistory = new BlockTrackerChangeHistory(blockStart.getOperation().getName(), blockStart.getOperation().getLocationInfo().getStartLine(), type, startLine, endLine);
nestedHistory.setStart(blockStart);
//////
if (!blockBefore.getComposite().getString().equals(blockAfter.getComposite().getString())) {
nestedHistory.addStatementChange(blockBefore, blockAfter, ChangeFactory.forBlock(Change.Type.BODY_CHANGE));
}
else {
if(blockBefore.differInFormatting(blockAfter)) {
nestedHistory.addStatementChange(blockBefore, blockAfter, ChangeFactory.forBlock(Change.Type.SIGNATURE_FORMAT_CHANGE));
}
else {
nestedHistory.get().addChange(blockBefore, blockAfter, ChangeFactory.of(AbstractChange.Type.NO_CHANGE));
}
}
nestedHistory.get().connectRelatedNodes();
nestedHistory.addFirst(blockBefore);
nested.put(blockStart, nestedHistory);
}
else if (mapping instanceof CompositeStatementObjectMapping && !mapping.getFragment1().getLocationInfo().getCodeElementType().equals(CodeElementType.BLOCK)) {
Block blockBefore = Block.of((CompositeStatementObject) mapping.getFragment1(), container1, parentVersion);
Block blockAfter = Block.of((CompositeStatementObject) mapping.getFragment2(), container2, currentVersion);
int blockStartLine = lineAlignment.get(blockAfter.getLocation().getStartLine());
CompositeStatementObject fragmentStart = null;
for (LambdaExpressionObject lambda : startBlock.getComposite().getLambdas()) {
if (lambda.getBody() != null) {
for (CompositeStatementObject f : lambda.getBody().getCompositeStatement().getInnerNodes()) {
if (f.getLocationInfo().getStartLine() == blockStartLine) {
fragmentStart = f;
break;
}
}
}
}
Block blockStart = Block.of(fragmentStart, startBlock.getOperation(), startBlock.getVersion());
//////
CodeElementType type = blockStart.getLocation().getCodeElementType();
int startLine = blockStart.getLocation().getStartLine();
int endLine = blockStart.getLocation().getEndLine();
BlockTrackerChangeHistory nestedHistory = new BlockTrackerChangeHistory(blockStart.getOperation().getName(), blockStart.getOperation().getLocationInfo().getStartLine(), type, startLine, endLine);
nestedHistory.setStart(blockStart);
//////
boolean bodyChange = false;
boolean catchOrFinallyChange = false;
boolean elseChange = false;
List<String> stringRepresentationBefore = blockBefore.getComposite().stringRepresentation();
List<String> stringRepresentationAfter = blockAfter.getComposite().stringRepresentation();
if (!stringRepresentationBefore.equals(stringRepresentationAfter)) {
handleCompositeExpressionChange(blockBefore, blockAfter, stringRepresentationBefore,
stringRepresentationAfter);
List<String> stringRepresentationBodyBefore = stringRepresentationBefore.subList(1, stringRepresentationBefore.size());
List<String> stringRepresentationBodyAfter = stringRepresentationAfter.subList(1, stringRepresentationAfter.size());
if (!stringRepresentationBodyBefore.equals(stringRepresentationBodyAfter)) {
nestedHistory.get().addChange(blockBefore, blockAfter, ChangeFactory.forBlock(Change.Type.BODY_CHANGE));
}
bodyChange = true;
}
if (blockBefore.getComposite() instanceof TryStatementObject && blockAfter.getComposite() instanceof TryStatementObject) {
TryStatementObject tryBefore = (TryStatementObject) blockBefore.getComposite();
TryStatementObject tryAfter = (TryStatementObject) blockAfter.getComposite();
List<CompositeStatementObject> catchBlocksBefore = new ArrayList<>(tryBefore.getCatchClauses());
List<CompositeStatementObject> catchBlocksAfter = new ArrayList<>(tryAfter.getCatchClauses());
for (AbstractCodeMapping m : mappings) {
if (m instanceof CompositeStatementObjectMapping) {
CompositeStatementObject fragment1 = (CompositeStatementObject) m.getFragment1();
CompositeStatementObject fragment2 = (CompositeStatementObject) m.getFragment2();
if (m.getFragment1().getLocationInfo().getCodeElementType().equals(CodeElementType.CATCH_CLAUSE) &&
m.getFragment2().getLocationInfo().getCodeElementType().equals(CodeElementType.CATCH_CLAUSE) &&
tryBefore.getCatchClauses().contains(fragment1) &&
tryAfter.getCatchClauses().contains(fragment2)) {
List<String> catchStringRepresentationBefore = fragment1.stringRepresentation();
List<String> catchStringRepresentationAfter = fragment2.stringRepresentation();
catchBlocksBefore.remove(fragment1);
catchBlocksAfter.remove(fragment2);
if (!catchStringRepresentationBefore.equals(catchStringRepresentationAfter)) {
nestedHistory.get().addChange(blockBefore, blockAfter, ChangeFactory.forBlock(Change.Type.CATCH_BLOCK_CHANGE));
catchOrFinallyChange = true;
}
}
}
}
Set<CompositeStatementObject> catchBlocksBeforeToRemove = new LinkedHashSet<>();
Set<CompositeStatementObject> catchBlocksAfterToRemove = new LinkedHashSet<>();
for (int i=0; i<Math.min(catchBlocksBefore.size(), catchBlocksAfter.size()); i++) {
List<UMLType> typesBefore = new ArrayList<>();
for (VariableDeclaration variableDeclaration : catchBlocksBefore.get(i).getVariableDeclarations()) {
typesBefore.add(variableDeclaration.getType());
}
List<UMLType> typesAfter = new ArrayList<>();
for (VariableDeclaration variableDeclaration : catchBlocksAfter.get(i).getVariableDeclarations()) {
typesAfter.add(variableDeclaration.getType());
}
if (typesBefore.equals(typesAfter)) {
List<String> catchStringRepresentationBefore = catchBlocksBefore.get(i).stringRepresentation();
List<String> catchStringRepresentationAfter = catchBlocksAfter.get(i).stringRepresentation();
catchBlocksBeforeToRemove.add(catchBlocksBefore.get(i));
catchBlocksAfterToRemove.add(catchBlocksAfter.get(i));
if (!catchStringRepresentationBefore.equals(catchStringRepresentationAfter)) {
nestedHistory.get().addChange(blockBefore, blockAfter, ChangeFactory.forBlock(Change.Type.CATCH_BLOCK_CHANGE));
catchOrFinallyChange = true;
}
}
}
catchBlocksBefore.removeAll(catchBlocksBeforeToRemove);
catchBlocksAfter.removeAll(catchBlocksAfterToRemove);
for (CompositeStatementObject catchBlockBefore : catchBlocksBefore) {
nestedHistory.get().addChange(blockBefore, blockAfter, ChangeFactory.forBlock(Change.Type.CATCH_BLOCK_REMOVED));
catchOrFinallyChange = true;
}
for (CompositeStatementObject catchBlockAfter : catchBlocksAfter) {
nestedHistory.get().addChange(blockBefore, blockAfter, ChangeFactory.forBlock(Change.Type.CATCH_BLOCK_ADDED));
catchOrFinallyChange = true;
}
if (tryBefore.getFinallyClause() != null && tryAfter.getFinallyClause() != null) {
List<String> finallyStringRepresentationBefore = tryBefore.getFinallyClause().stringRepresentation();
List<String> finallyStringRepresentationAfter = tryAfter.getFinallyClause().stringRepresentation();
if (!finallyStringRepresentationBefore.equals(finallyStringRepresentationAfter)) {
nestedHistory.get().addChange(blockBefore, blockAfter, ChangeFactory.forBlock(Change.Type.FINALLY_BLOCK_CHANGE));
catchOrFinallyChange = true;
}
}
else if (tryBefore.getFinallyClause() == null && tryAfter.getFinallyClause() != null) {
nestedHistory.get().addChange(blockBefore, blockAfter, ChangeFactory.forBlock(Change.Type.FINALLY_BLOCK_ADDED));
catchOrFinallyChange = true;
}
else if (tryBefore.getFinallyClause() != null && tryAfter.getFinallyClause() == null) {
nestedHistory.get().addChange(blockBefore, blockAfter, ChangeFactory.forBlock(Change.Type.FINALLY_BLOCK_REMOVED));
catchOrFinallyChange = true;
}
}
if (blockBefore.getComposite().getLocationInfo().getCodeElementType().equals(CodeElementType.IF_STATEMENT) &&
blockAfter.getComposite().getLocationInfo().getCodeElementType().equals(CodeElementType.IF_STATEMENT)) {
CompositeStatementObject ifBefore = (CompositeStatementObject) blockBefore.getComposite();
CompositeStatementObject ifAfter = (CompositeStatementObject) blockAfter.getComposite();
if (ifBefore.getStatements().size() == 1 && ifAfter.getStatements().size() == 2) {
nestedHistory.get().addChange(blockBefore, blockAfter, ChangeFactory.forBlock(Change.Type.ELSE_BLOCK_ADDED));
elseChange = true;
}
else if (ifBefore.getStatements().size() == 2 && ifAfter.getStatements().size() == 1) {
nestedHistory.get().addChange(blockBefore, blockAfter, ChangeFactory.forBlock(Change.Type.ELSE_BLOCK_REMOVED));
elseChange = true;
}
else if (ifBefore.getStatements().size() == 2 && ifAfter.getStatements().size() == 2) {
if(ifBefore.getStatements().get(1).getLocationInfo().getCodeElementType().equals(CodeElementType.BLOCK) &&
!ifAfter.getStatements().get(1).getLocationInfo().getCodeElementType().equals(CodeElementType.BLOCK) &&
!ifAfter.getStatements().get(1).getLocationInfo().getCodeElementType().equals(CodeElementType.IF_STATEMENT)) {
nestedHistory.get().addChange(blockBefore, blockAfter, ChangeFactory.forBlock(Change.Type.ELSE_BLOCK_BODY_REMOVED));
elseChange = true;
}
else if(!ifBefore.getStatements().get(1).getLocationInfo().getCodeElementType().equals(CodeElementType.BLOCK) &&
!ifBefore.getStatements().get(1).getLocationInfo().getCodeElementType().equals(CodeElementType.IF_STATEMENT) &&
ifAfter.getStatements().get(1).getLocationInfo().getCodeElementType().equals(CodeElementType.BLOCK)) {
nestedHistory.get().addChange(blockBefore, blockAfter, ChangeFactory.forBlock(Change.Type.ELSE_BLOCK_BODY_ADDED));
elseChange = true;
}
}
}
if (!bodyChange && !catchOrFinallyChange && !elseChange) {
if(blockBefore.differInFormatting(blockAfter)) {
nestedHistory.addStatementChange(blockBefore, blockAfter, ChangeFactory.forBlock(Change.Type.SIGNATURE_FORMAT_CHANGE));
}
else {
nestedHistory.get().addChange(blockBefore, blockAfter, ChangeFactory.of(AbstractChange.Type.NO_CHANGE));
}
}
nestedHistory.get().connectRelatedNodes();
nestedHistory.addFirst(blockBefore);
nested.put(blockStart, nestedHistory);
}
}
}
private Set<Block> analyseBlockRefactorings(Collection<Refactoring> refactorings, Version currentVersion, Version parentVersion, Predicate<Block> equalOperator) {
Set<Block> leftBlockSet = new HashSet<>();
for (Refactoring refactoring : refactorings) {
Block blockBefore = null;
Block blockAfter = null;
Change.Type changeType = null;
switch (refactoring.getRefactoringType()) {
case REPLACE_LOOP_WITH_PIPELINE: {
ReplaceLoopWithPipelineRefactoring loopWithPipelineRefactoring = (ReplaceLoopWithPipelineRefactoring) refactoring;
for (AbstractCodeFragment fragment : loopWithPipelineRefactoring.getCodeFragmentsAfter()) {
if (fragment instanceof StatementObject) {
StatementObject statement = (StatementObject) fragment;
Block addedBlockAfter = Block.of(statement, loopWithPipelineRefactoring.getOperationAfter(), currentVersion);
if (equalOperator.test(addedBlockAfter)) {
Set<AbstractCodeFragment> fragmentsBefore = loopWithPipelineRefactoring.getCodeFragmentsBefore();
for (AbstractCodeFragment fragmentBefore : fragmentsBefore) {
if (fragmentBefore instanceof CompositeStatementObject) {
if (fragmentBefore.getLocationInfo().getCodeElementType().equals(CodeElementType.ENHANCED_FOR_STATEMENT) ||
fragmentBefore.getLocationInfo().getCodeElementType().equals(CodeElementType.FOR_STATEMENT) ||
fragmentBefore.getLocationInfo().getCodeElementType().equals(CodeElementType.WHILE_STATEMENT) ||
fragmentBefore.getLocationInfo().getCodeElementType().equals(CodeElementType.DO_STATEMENT)) {
blockBefore = Block.of((CompositeStatementObject) fragmentBefore, loopWithPipelineRefactoring.getOperationBefore(), parentVersion);
blockAfter = addedBlockAfter;
changeType = Change.Type.REPLACE_LOOP_WITH_PIPELINE;
processNestedMappings(blockBefore, blockAfter, currentVersion, parentVersion, loopWithPipelineRefactoring.getNestedStatementMappings(), loopWithPipelineRefactoring.getOperationBefore(), loopWithPipelineRefactoring.getOperationAfter());
}
}
}
}
}
}
break;
}
case REPLACE_ANONYMOUS_WITH_LAMBDA: {
ReplaceAnonymousWithLambdaRefactoring anonymousWithLambdaRefactoring = (ReplaceAnonymousWithLambdaRefactoring) refactoring;
if (anonymousWithLambdaRefactoring.getLambdaOwner() instanceof StatementObject) {
StatementObject statement = (StatementObject) anonymousWithLambdaRefactoring.getLambdaOwner();
Block addedBlockAfter = Block.of(statement, anonymousWithLambdaRefactoring.getOperationAfter(), currentVersion);
if (equalOperator.test(addedBlockAfter)) {
blockBefore = Block.of((StatementObject) anonymousWithLambdaRefactoring.getAnonymousOwner(), anonymousWithLambdaRefactoring.getOperationBefore(), parentVersion);
blockAfter = addedBlockAfter;
changeType = Change.Type.REPLACE_ANONYMOUS_WITH_LAMBDA;
processNestedMappings(blockBefore, blockAfter, currentVersion, parentVersion, anonymousWithLambdaRefactoring.getMappings(), anonymousWithLambdaRefactoring.getOperationBefore(), anonymousWithLambdaRefactoring.getOperationAfter());
}
}
break;
}
case REPLACE_PIPELINE_WITH_LOOP: {
ReplacePipelineWithLoopRefactoring pipelineWithLoopRefactoring = (ReplacePipelineWithLoopRefactoring) refactoring;
for (AbstractCodeFragment fragment : pipelineWithLoopRefactoring.getCodeFragmentsAfter()) {
if (fragment instanceof CompositeStatementObject) {
CompositeStatementObject composite = (CompositeStatementObject) fragment;
Block addedBlockAfter = Block.of(composite, pipelineWithLoopRefactoring.getOperationAfter(), currentVersion);
if (equalOperator.test(addedBlockAfter)) {
// implementation for introduced
/*
Block addedBlockBefore = Block.of(composite, pipelineWithLoopRefactoring.getOperationAfter(), parentVersion);
addedBlockBefore.setAdded(true);
ChangeFactory changeFactory = ChangeFactory.forBlock(Change.Type.INTRODUCED)
.comment(pipelineWithLoopRefactoring.toString()).refactoring(pipelineWithLoopRefactoring).codeElement(addedBlockAfter);
blockChangeHistory.addChange(addedBlockBefore, addedBlockAfter, changeFactory);
leftBlockSet.add(addedBlockBefore);
blockChangeHistory.connectRelatedNodes();
return leftBlockSet;
*/
Set<AbstractCodeFragment> fragmentsBefore = pipelineWithLoopRefactoring.getCodeFragmentsBefore();
if (fragmentsBefore.size() == 1 && fragmentsBefore.iterator().next() instanceof StatementObject) {