/* bd is a static field declaration or static initializer */
private static boolean depends(IExpressionFragment selected, BodyDeclaration bd) {
/* We currently consider selected to depend on bd only if db includes a declaration
* of a static field on which selected depends.
*
* A more accurate strategy might be to also check if bd contains (or is) a
* static initializer containing code which changes the value of a static field on
* which selected depends. However, if a static is written to multiple times within
* during class initialization, it is difficult to predict which value should be used.
* This would depend on which value is used by expressions instances for which the new
* constant will be substituted, and there may be many of these; in each, the
* static field in question may have taken on a different value (if some of these uses
* occur within static initializers).
*/
if (bd instanceof FieldDeclaration) {
FieldDeclaration fieldDecl = (FieldDeclaration) bd;
for (Iterator fragments = fieldDecl.fragments().iterator(); fragments.hasNext(); ) {
VariableDeclarationFragment fragment = (VariableDeclarationFragment) fragments.next();
SimpleName staticFieldName = fragment.getName();
if (selected.getSubFragmentsMatching(
ASTFragmentFactory.createFragmentForFullSubtree(staticFieldName))
.length
!= 0) return true;
}
}
return false;
}
// !! - like one in ExtractTempRefactoring
private static boolean canReplace(IASTFragment fragment) {
ASTNode node = fragment.getAssociatedNode();
ASTNode parent = node.getParent();
if (parent instanceof VariableDeclarationFragment) {
VariableDeclarationFragment vdf = (VariableDeclarationFragment) parent;
if (node.equals(vdf.getName())) return false;
}
if (parent instanceof ExpressionStatement) return false;
if (parent instanceof SwitchCase) return false;
return true;
}
/*
* @see ASTVisitor#visit(VariableDeclarationFragment)
*/
public boolean visit(VariableDeclarationFragment node) {
node.getName().accept(this);
for (int i = 0; i < node.getExtraDimensions(); i++) {
this.fBuffer.append("[]"); // $NON-NLS-1$
}
if (node.getInitializer() != null) {
this.fBuffer.append("="); // $NON-NLS-1$
node.getInitializer().accept(this);
}
return false;
}
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);
}
}