/*
* Evaluates possible return expressions. The favourite expression is returned.
*/
private Expression evaluateReturnExpressions(
AST ast, ITypeBinding returnBinding, int returnOffset) {
CompilationUnit root = (CompilationUnit) fMethodDecl.getRoot();
Expression result = null;
if (returnBinding != null) {
ScopeAnalyzer analyzer = new ScopeAnalyzer(root);
IBinding[] bindings =
analyzer.getDeclarationsInScope(
returnOffset, ScopeAnalyzer.VARIABLES | ScopeAnalyzer.CHECK_VISIBILITY);
for (int i = 0; i < bindings.length; i++) {
IVariableBinding curr = (IVariableBinding) bindings[i];
ITypeBinding type = curr.getType();
if (type != null && type.isAssignmentCompatible(returnBinding) && testModifier(curr)) {
if (result == null) {
result = ast.newSimpleName(curr.getName());
}
addLinkedPositionProposal(RETURN_EXPRESSION_KEY, curr.getName(), null);
}
}
}
Expression defaultExpression =
ASTNodeFactory.newDefaultExpression(
ast, fMethodDecl.getReturnType2(), fMethodDecl.getExtraDimensions());
addLinkedPositionProposal(RETURN_EXPRESSION_KEY, ASTNodes.asString(defaultExpression), null);
if (result == null) {
return defaultExpression;
}
return result;
}
private String getConstantTypeName() throws JavaModelException {
return ASTNodes.asString(getConstantType());
}
private ExtractConstantDescriptor createRefactoringDescriptor() {
final Map<String, String> arguments = new HashMap<>();
String project = null;
IJavaProject javaProject = fCu.getJavaProject();
if (javaProject != null) project = javaProject.getElementName();
int flags =
JavaRefactoringDescriptor.JAR_REFACTORING | JavaRefactoringDescriptor.JAR_SOURCE_ATTACHMENT;
if (JdtFlags.getVisibilityCode(fVisibility) != Modifier.PRIVATE)
flags |= RefactoringDescriptor.STRUCTURAL_CHANGE;
final String expression = ASTNodes.asString(fSelectedExpression.getAssociatedExpression());
final String description =
Messages.format(
RefactoringCoreMessages.ExtractConstantRefactoring_descriptor_description_short,
BasicElementLabels.getJavaElementName(fConstantName));
final String header =
Messages.format(
RefactoringCoreMessages.ExtractConstantRefactoring_descriptor_description,
new String[] {
BasicElementLabels.getJavaElementName(fConstantName),
BasicElementLabels.getJavaCodeString(expression)
});
final JDTRefactoringDescriptorComment comment =
new JDTRefactoringDescriptorComment(project, this, header);
comment.addSetting(
Messages.format(
RefactoringCoreMessages.ExtractConstantRefactoring_constant_name_pattern,
BasicElementLabels.getJavaElementName(fConstantName)));
comment.addSetting(
Messages.format(
RefactoringCoreMessages.ExtractConstantRefactoring_constant_expression_pattern,
BasicElementLabels.getJavaCodeString(expression)));
String visibility = fVisibility;
if ("".equals(visibility)) // $NON-NLS-1$
visibility = RefactoringCoreMessages.ExtractConstantRefactoring_default_visibility;
comment.addSetting(
Messages.format(
RefactoringCoreMessages.ExtractConstantRefactoring_visibility_pattern, visibility));
if (fReplaceAllOccurrences)
comment.addSetting(RefactoringCoreMessages.ExtractConstantRefactoring_replace_occurrences);
if (fQualifyReferencesWithDeclaringClassName)
comment.addSetting(RefactoringCoreMessages.ExtractConstantRefactoring_qualify_references);
arguments.put(
JavaRefactoringDescriptorUtil.ATTRIBUTE_INPUT,
JavaRefactoringDescriptorUtil.elementToHandle(project, fCu));
arguments.put(JavaRefactoringDescriptorUtil.ATTRIBUTE_NAME, fConstantName);
arguments.put(
JavaRefactoringDescriptorUtil.ATTRIBUTE_SELECTION,
new Integer(fSelectionStart).toString()
+ " "
+ new Integer(fSelectionLength).toString()); // $NON-NLS-1$
arguments.put(ATTRIBUTE_REPLACE, Boolean.valueOf(fReplaceAllOccurrences).toString());
arguments.put(
ATTRIBUTE_QUALIFY, Boolean.valueOf(fQualifyReferencesWithDeclaringClassName).toString());
arguments.put(
ATTRIBUTE_VISIBILITY, new Integer(JdtFlags.getVisibilityCode(fVisibility)).toString());
ExtractConstantDescriptor descriptor =
RefactoringSignatureDescriptorFactory.createExtractConstantDescriptor(
project, description, comment.asString(), arguments, flags);
return descriptor;
}