protected IScanner getScanner(IJavaScriptUnit unit) {
if (unit.equals(fCuCache)) return fScannerCache;
fCuCache = unit;
IJavaScriptProject project = unit.getJavaScriptProject();
String sourceLevel = project.getOption(JavaScriptCore.COMPILER_SOURCE, true);
String complianceLevel = project.getOption(JavaScriptCore.COMPILER_COMPLIANCE, true);
fScannerCache = ToolFactory.createScanner(false, false, false, sourceLevel, complianceLevel);
return fScannerCache;
}
/**
* @return proposed variable names (may be empty, but not null). The first proposal should be used
* as "best guess" (if it exists).
*/
public String[] guessConstantNames() {
if (fGuessedConstNames == null) {
try {
Expression expression = getSelectedExpression().getAssociatedExpression();
if (expression != null) {
ITypeBinding binding = expression.resolveTypeBinding();
fGuessedConstNames =
StubUtility.getVariableNameSuggestions(
StubUtility.CONSTANT_FIELD,
fCu.getJavaScriptProject(),
binding,
expression,
Arrays.asList(getExcludedVariableNames()));
}
} catch (JavaScriptModelException e) {
}
if (fGuessedConstNames == null) fGuessedConstNames = new String[0];
}
return fGuessedConstNames;
}
private boolean isOnClassPath(IJavaScriptUnit element) throws JavaScriptModelException {
IJavaScriptProject project = element.getJavaScriptProject();
if (project == null || !project.exists()) return false;
return project.isOnIncludepath(element);
}
public Change createChange(IProgressMonitor monitor) throws CoreException {
final Map arguments = new HashMap();
String project = null;
IJavaScriptProject javaProject = fCu.getJavaScriptProject();
if (javaProject != null) project = javaProject.getElementName();
int flags =
JavaScriptRefactoringDescriptor.JAR_REFACTORING
| JavaScriptRefactoringDescriptor.JAR_SOURCE_ATTACHMENT;
if (JdtFlags.getVisibilityCode(fVisibility) != Modifier.PRIVATE)
flags |= RefactoringDescriptor.STRUCTURAL_CHANGE;
String pattern = ""; // $NON-NLS-1$
try {
pattern =
BindingLabelProvider.getBindingLabel(
getContainingTypeBinding(), JavaScriptElementLabels.ALL_FULLY_QUALIFIED)
+ "."; //$NON-NLS-1$
} catch (JavaScriptModelException exception) {
JavaScriptPlugin.log(exception);
}
final String expression = ASTNodes.asString(fSelectedExpression.getAssociatedExpression());
final String description =
Messages.format(
RefactoringCoreMessages.ExtractConstantRefactoring_descriptor_description_short,
fConstantName);
final String header =
Messages.format(
RefactoringCoreMessages.ExtractConstantRefactoring_descriptor_description,
new String[] {pattern + fConstantName, expression});
final JDTRefactoringDescriptorComment comment =
new JDTRefactoringDescriptorComment(project, this, header);
comment.addSetting(
Messages.format(
RefactoringCoreMessages.ExtractConstantRefactoring_constant_name_pattern,
fConstantName));
comment.addSetting(
Messages.format(
RefactoringCoreMessages.ExtractConstantRefactoring_constant_expression_pattern,
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);
final JDTRefactoringDescriptor descriptor =
new JDTRefactoringDescriptor(
IJavaScriptRefactorings.EXTRACT_CONSTANT,
project,
description,
comment.asString(),
arguments,
flags);
arguments.put(JDTRefactoringDescriptor.ATTRIBUTE_INPUT, descriptor.elementToHandle(fCu));
arguments.put(JDTRefactoringDescriptor.ATTRIBUTE_NAME, fConstantName);
arguments.put(
JDTRefactoringDescriptor.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());
return new RefactoringDescriptorChange(
descriptor,
RefactoringCoreMessages.ExtractConstantRefactoring_name,
new Change[] {fChange});
}
private void createConstantDeclaration() throws CoreException {
Type type = getConstantType();
IExpressionFragment fragment = getSelectedExpression();
String initializerSource =
fCu.getBuffer().getText(fragment.getStartPosition(), fragment.getLength());
AST ast = fCuRewrite.getAST();
VariableDeclarationFragment variableDeclarationFragment = ast.newVariableDeclarationFragment();
variableDeclarationFragment.setName(ast.newSimpleName(fConstantName));
variableDeclarationFragment.setInitializer(
(Expression)
fCuRewrite
.getASTRewrite()
.createStringPlaceholder(initializerSource, ASTNode.SIMPLE_NAME));
FieldDeclaration fieldDeclaration = ast.newFieldDeclaration(variableDeclarationFragment);
fieldDeclaration.setType(type);
Modifier.ModifierKeyword accessModifier = Modifier.ModifierKeyword.toKeyword(fVisibility);
if (accessModifier != null) fieldDeclaration.modifiers().add(ast.newModifier(accessModifier));
fieldDeclaration.modifiers().add(ast.newModifier(Modifier.ModifierKeyword.STATIC_KEYWORD));
fieldDeclaration.modifiers().add(ast.newModifier(Modifier.ModifierKeyword.FINAL_KEYWORD));
boolean createComments =
JavaPreferencesSettings.getCodeGenerationSettings(fCu.getJavaScriptProject())
.createComments;
if (createComments) {
String comment =
CodeGeneration.getFieldComment(
fCu, getConstantTypeName(), fConstantName, StubUtility.getLineDelimiterUsed(fCu));
if (comment != null && comment.length() > 0) {
JSdoc doc =
(JSdoc) fCuRewrite.getASTRewrite().createStringPlaceholder(comment, ASTNode.JSDOC);
fieldDeclaration.setJavadoc(doc);
}
}
AbstractTypeDeclaration parent = getContainingTypeDeclarationNode();
ListRewrite listRewrite =
fCuRewrite.getASTRewrite().getListRewrite(parent, parent.getBodyDeclarationsProperty());
TextEditGroup msg =
fCuRewrite.createGroupDescription(
RefactoringCoreMessages.ExtractConstantRefactoring_declare_constant);
if (insertFirst()) {
listRewrite.insertFirst(fieldDeclaration, msg);
} else {
listRewrite.insertAfter(fieldDeclaration, getNodeToInsertConstantDeclarationAfter(), msg);
}
if (fLinkedProposalModel != null) {
ASTRewrite rewrite = fCuRewrite.getASTRewrite();
LinkedProposalPositionGroup nameGroup = fLinkedProposalModel.getPositionGroup(KEY_NAME, true);
nameGroup.addPosition(rewrite.track(variableDeclarationFragment.getName()), true);
String[] nameSuggestions = guessConstantNames();
if (nameSuggestions.length > 0 && !nameSuggestions[0].equals(fConstantName)) {
nameGroup.addProposal(fConstantName, null, nameSuggestions.length + 1);
}
for (int i = 0; i < nameSuggestions.length; i++) {
nameGroup.addProposal(nameSuggestions[i], null, nameSuggestions.length - i);
}
LinkedProposalPositionGroup typeGroup = fLinkedProposalModel.getPositionGroup(KEY_TYPE, true);
typeGroup.addPosition(rewrite.track(type), true);
ITypeBinding typeBinding = fragment.getAssociatedExpression().resolveTypeBinding();
if (typeBinding != null) {
ITypeBinding[] relaxingTypes = ASTResolving.getNarrowingTypes(ast, typeBinding);
for (int i = 0; i < relaxingTypes.length; i++) {
typeGroup.addProposal(relaxingTypes[i], fCuRewrite.getCu(), relaxingTypes.length - i);
}
}
ModifierCorrectionSubProcessor.installLinkedVisibilityProposals(
fLinkedProposalModel, rewrite, fieldDeclaration.modifiers(), false);
}
}