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Code Issues Wiki Activity

Added "PRESERVE" comment to protect some nodes from removal.

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Change-Id: I63038293cf66fb81fa30ab0d14f847d9c4bfea4d
This commit is contained in:
Sergey Prigogin 2016-10-25 10:52:13 -07:00
parent b63adf43db
commit d203d965a2
2 changed files with 33 additions and 2 deletions
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16
core/org.eclipse.cdt.ui.tests/src/org/eclipse/cdt/ui/tests/reducer/RemoveFunctionBodiesRefactoring.java
View file

@ -61,6 +61,7 @@ import org.eclipse.cdt.internal.ui.refactoring.changes.CCompositeChange;
import org.eclipse.cdt.internal.ui.refactoring.utils.SelectionHelper;
public class RemoveFunctionBodiesRefactoring extends CRefactoring {
private static final String PROTECTION_TOKEN = "PRESERVE";
private INodeFactory nodeFactory;
private final DefaultCodeFormatterOptions formattingOptions;
@ -124,7 +125,7 @@ public class RemoveFunctionBodiesRefactoring extends CRefactoring {
CTextFileChange fileChange = new CTextFileChange(tu.getElementName(), tu);
fileChange.setEdit(new MultiTextEdit());
for (IASTFunctionDefinition definition : finder.functionDefinitions) {
if (!SelectionHelper.isNodeInsideRegion(definition, region))
if (!SelectionHelper.isNodeInsideRegion(definition, region) || containsProtectionToken(definition, code))
continue;
IASTStatement body = definition.getBody();
IASTName name = definition.getDeclarator().getName();
@ -170,6 +171,19 @@ public class RemoveFunctionBodiesRefactoring extends CRefactoring {
return change;
}
/**
* Checks if the node or the rest of its last line contain text matching {@link #PROTECTION_TOKEN}.
*/
private boolean containsProtectionToken(IASTNode node, String code) {
int offset = ASTNodes.offset(node);
int endOffset = ASTNodes.skipToNextLineAfterNode(code, node);
for (int i = offset; i < endOffset - PROTECTION_TOKEN.length(); i++) {
if (code.regionMatches(i, PROTECTION_TOKEN, 0, PROTECTION_TOKEN.length()))
return true;
}
return false;
}
private static int skipWhitespaceBefore(int offset, String text) {
while (--offset >= 0) {
char c = text.charAt(offset);

19
core/org.eclipse.cdt.ui.tests/src/org/eclipse/cdt/ui/tests/reducer/RemoveUnusedDeclarationsRefactoring.java
View file

@ -98,6 +98,7 @@ import org.eclipse.cdt.internal.ui.refactoring.changes.CCompositeChange;
import org.eclipse.cdt.internal.ui.refactoring.utils.SelectionHelper;
public class RemoveUnusedDeclarationsRefactoring extends CRefactoring {
private static final String PROTECTION_TOKEN = "PRESERVE";
private static final IASTName UNUSED_NAME = new CPPASTName(null);
private static final ProblemFinder problemFinder = new ProblemFinder();
@ -160,11 +161,14 @@ public class RemoveUnusedDeclarationsRefactoring extends CRefactoring {
// it is too slow for the gigantic changes this refactoring has to deal with.
NavigableSet<IASTName> names = NameCollector.getContainedNames(ast);
String code = ast.getRawSignature();
SortedNodeSet<IASTNode> nodesToDelete = new SortedNodeSet<>();
IASTPreprocessorMacroExpansion[] macroExpansions = ast.getMacroExpansions();
for (IASTPreprocessorMacroExpansion macroExpansion : macroExpansions) {
IASTName name = macroExpansion.getMacroReference();
if (SelectionHelper.isNodeInsideRegion(name, region)
&& !containsProtectionToken(name, code)
&& macroExpansion.getMacroDefinition().getExpansion().isEmpty()) {
nodesToDelete.add(macroExpansion);
}
@ -177,6 +181,7 @@ public class RemoveUnusedDeclarationsRefactoring extends CRefactoring {
for (int i = declarations.size(); --i >= 0;) {
IASTDeclaration declaration = declarations.get(i);
if (SelectionHelper.isNodeInsideRegion(declaration, region)
&& !containsProtectionToken(declaration, code)
&& !problemFinder.containsProblemBinding(declaration)
&& !isPossiblyUsed(declaration, names, nodesToDelete)) {
nodesToDelete.add(declaration);
@ -184,7 +189,6 @@ public class RemoveUnusedDeclarationsRefactoring extends CRefactoring {
}
}
String code = ast.getRawSignature();
CTextFileChange fileChange = new CTextFileChange(tu.getElementName(), tu);
fileChange.setEdit(new MultiTextEdit());
@ -215,6 +219,19 @@ public class RemoveUnusedDeclarationsRefactoring extends CRefactoring {
return change;
}
/**
* Checks if the node or the rest of its last line contain text matching {@link #PROTECTION_TOKEN}.
*/
private boolean containsProtectionToken(IASTNode node, String code) {
int offset = ASTNodes.offset(node);
int endOffset = ASTNodes.skipToNextLineAfterNode(code, node);
for (int i = offset; i < endOffset - PROTECTION_TOKEN.length(); i++) {
if (code.regionMatches(i, PROTECTION_TOKEN, 0, PROTECTION_TOKEN.length()))
return true;
}
return false;
}
private boolean containsAncestor(Collection<IASTNode> nodes, IASTNode node) {
while ((node = node.getParent()) != null) {
if (nodes.contains(node))