private ASTRewrite doAddLocal(CompilationUnit cu) {
AST ast = cu.getAST();
Block body;
BodyDeclaration decl = ASTResolving.findParentBodyDeclaration(fOriginalNode);
IBinding targetContext = null;
if (decl instanceof MethodDeclaration) {
body = (((MethodDeclaration) decl).getBody());
targetContext = ((MethodDeclaration) decl).resolveBinding();
} else if (decl instanceof Initializer) {
body = (((Initializer) decl).getBody());
targetContext = Bindings.getBindingOfParentType(decl);
} else {
return null;
}
ASTRewrite rewrite = ASTRewrite.create(ast);
ImportRewrite imports = createImportRewrite((CompilationUnit) decl.getRoot());
ImportRewriteContext importRewriteContext =
new ContextSensitiveImportRewriteContext(decl, imports);
SimpleName[] names = getAllReferences(body);
ASTNode dominant = getDominantNode(names);
Statement dominantStatement = ASTResolving.findParentStatement(dominant);
if (ASTNodes.isControlStatementBody(dominantStatement.getLocationInParent())) {
dominantStatement = (Statement) dominantStatement.getParent();
}
SimpleName node = names[0];
if (isAssigned(dominantStatement, node)) {
// x = 1; -> int x = 1;
Assignment assignment = (Assignment) node.getParent();
// trick to avoid comment removal around the statement: keep the expression statement
// and replace the assignment with an VariableDeclarationExpression
VariableDeclarationFragment newDeclFrag = ast.newVariableDeclarationFragment();
VariableDeclarationExpression newDecl = ast.newVariableDeclarationExpression(newDeclFrag);
newDecl.setType(evaluateVariableType(ast, imports, importRewriteContext, targetContext));
Expression placeholder = (Expression) rewrite.createCopyTarget(assignment.getRightHandSide());
newDeclFrag.setInitializer(placeholder);
newDeclFrag.setName(ast.newSimpleName(node.getIdentifier()));
rewrite.replace(assignment, newDecl, null);
addLinkedPosition(rewrite.track(newDecl.getType()), false, KEY_TYPE);
addLinkedPosition(rewrite.track(newDeclFrag.getName()), true, KEY_NAME);
setEndPosition(rewrite.track(assignment.getParent()));
return rewrite;
} else if ((dominant != dominantStatement) && isForStatementInit(dominantStatement, node)) {
// for (x = 1;;) ->for (int x = 1;;)
Assignment assignment = (Assignment) node.getParent();
VariableDeclarationFragment frag = ast.newVariableDeclarationFragment();
VariableDeclarationExpression expression = ast.newVariableDeclarationExpression(frag);
frag.setName(ast.newSimpleName(node.getIdentifier()));
Expression placeholder = (Expression) rewrite.createCopyTarget(assignment.getRightHandSide());
frag.setInitializer(placeholder);
expression.setType(evaluateVariableType(ast, imports, importRewriteContext, targetContext));
rewrite.replace(assignment, expression, null);
addLinkedPosition(rewrite.track(expression.getType()), false, KEY_TYPE);
addLinkedPosition(rewrite.track(frag.getName()), true, KEY_NAME);
setEndPosition(rewrite.track(expression));
return rewrite;
} else if ((dominant != dominantStatement)
&& isEnhancedForStatementVariable(dominantStatement, node)) {
// for (x: collectionOfT) -> for (T x: collectionOfT)
EnhancedForStatement enhancedForStatement = (EnhancedForStatement) dominantStatement;
SingleVariableDeclaration parameter = enhancedForStatement.getParameter();
Expression expression = enhancedForStatement.getExpression();
SimpleName newName = (SimpleName) rewrite.createMoveTarget(node);
rewrite.set(parameter, SingleVariableDeclaration.NAME_PROPERTY, newName, null);
ITypeBinding elementBinding = null;
ITypeBinding typeBinding = expression.resolveTypeBinding();
if (typeBinding != null) {
if (typeBinding.isArray()) {
elementBinding = typeBinding.getElementType();
} else {
ITypeBinding iterable =
Bindings.findTypeInHierarchy(typeBinding, "java.lang.Iterable"); // $NON-NLS-1$
if (iterable != null) {
ITypeBinding[] typeArguments = iterable.getTypeArguments();
if (typeArguments.length == 1) {
elementBinding = typeArguments[0];
elementBinding = Bindings.normalizeForDeclarationUse(elementBinding, ast);
}
}
}
}
Type type;
if (elementBinding != null) {
type = imports.addImport(elementBinding, ast, importRewriteContext);
} else {
type = ast.newSimpleType(ast.newSimpleName("Object")); // $NON-NLS-1$
}
rewrite.set(parameter, SingleVariableDeclaration.TYPE_PROPERTY, type, null);
addLinkedPosition(rewrite.track(type), false, KEY_TYPE);
addLinkedPosition(rewrite.track(newName), true, KEY_NAME);
setEndPosition(rewrite.track(expression));
return rewrite;
}
// foo(x) -> int x; foo(x)
VariableDeclarationFragment newDeclFrag = ast.newVariableDeclarationFragment();
VariableDeclarationStatement newDecl = ast.newVariableDeclarationStatement(newDeclFrag);
newDeclFrag.setName(ast.newSimpleName(node.getIdentifier()));
newDecl.setType(evaluateVariableType(ast, imports, importRewriteContext, targetContext));
// newDeclFrag.setInitializer(ASTNodeFactory.newDefaultExpression(ast, newDecl.getType(), 0));
addLinkedPosition(rewrite.track(newDecl.getType()), false, KEY_TYPE);
addLinkedPosition(rewrite.track(node), true, KEY_NAME);
addLinkedPosition(rewrite.track(newDeclFrag.getName()), false, KEY_NAME);
Statement statement = dominantStatement;
List<? extends ASTNode> list = ASTNodes.getContainingList(statement);
while (list == null
&& statement.getParent() instanceof Statement) { // parent must be if, for or while
statement = (Statement) statement.getParent();
list = ASTNodes.getContainingList(statement);
}
if (list != null) {
ASTNode parent = statement.getParent();
StructuralPropertyDescriptor childProperty = statement.getLocationInParent();
if (childProperty.isChildListProperty()) {
rewrite
.getListRewrite(parent, (ChildListPropertyDescriptor) childProperty)
.insertBefore(newDecl, statement, null);
return rewrite;
} else {
return null;
}
}
return rewrite;
}
public static void getMissingJavadocCommentProposals(
IInvocationContext context, IProblemLocation problem, Collection<ICommandAccess> proposals)
throws CoreException {
ASTNode node = problem.getCoveringNode(context.getASTRoot());
if (node == null) {
return;
}
BodyDeclaration declaration = ASTResolving.findParentBodyDeclaration(node);
if (declaration == null) {
return;
}
ICompilationUnit cu = context.getCompilationUnit();
ITypeBinding binding = Bindings.getBindingOfParentType(declaration);
if (binding == null) {
return;
}
if (declaration instanceof MethodDeclaration) {
MethodDeclaration methodDecl = (MethodDeclaration) declaration;
IMethodBinding methodBinding = methodDecl.resolveBinding();
IMethodBinding overridden = null;
if (methodBinding != null) {
overridden = Bindings.findOverriddenMethod(methodBinding, true);
}
String string =
CodeGeneration.getMethodComment(
cu, binding.getName(), methodDecl, overridden, String.valueOf('\n'));
if (string != null) {
String label = CorrectionMessages.JavadocTagsSubProcessor_addjavadoc_method_description;
proposals.add(
new AddJavadocCommentProposal(
label,
cu,
IProposalRelevance.ADD_JAVADOC_METHOD,
declaration.getStartPosition(),
string));
}
} else if (declaration instanceof AbstractTypeDeclaration) {
String typeQualifiedName = Bindings.getTypeQualifiedName(binding);
String[] typeParamNames;
if (declaration instanceof TypeDeclaration) {
List<TypeParameter> typeParams = ((TypeDeclaration) declaration).typeParameters();
typeParamNames = new String[typeParams.size()];
for (int i = 0; i < typeParamNames.length; i++) {
typeParamNames[i] = (typeParams.get(i)).getName().getIdentifier();
}
} else {
typeParamNames = new String[0];
}
String string =
CodeGeneration.getTypeComment(
cu, typeQualifiedName, typeParamNames, String.valueOf('\n'));
if (string != null) {
String label = CorrectionMessages.JavadocTagsSubProcessor_addjavadoc_type_description;
proposals.add(
new AddJavadocCommentProposal(
label,
cu,
IProposalRelevance.ADD_JAVADOC_TYPE,
declaration.getStartPosition(),
string));
}
} else if (declaration instanceof FieldDeclaration) {
String comment = "/**\n *\n */\n"; // $NON-NLS-1$
List<VariableDeclarationFragment> fragments = ((FieldDeclaration) declaration).fragments();
if (fragments != null && fragments.size() > 0) {
VariableDeclaration decl = fragments.get(0);
String fieldName = decl.getName().getIdentifier();
String typeName = binding.getName();
comment = CodeGeneration.getFieldComment(cu, typeName, fieldName, String.valueOf('\n'));
}
if (comment != null) {
String label = CorrectionMessages.JavadocTagsSubProcessor_addjavadoc_field_description;
proposals.add(
new AddJavadocCommentProposal(
label,
cu,
IProposalRelevance.ADD_JAVADOC_FIELD,
declaration.getStartPosition(),
comment));
}
} else if (declaration instanceof EnumConstantDeclaration) {
EnumConstantDeclaration enumDecl = (EnumConstantDeclaration) declaration;
String id = enumDecl.getName().getIdentifier();
String comment =
CodeGeneration.getFieldComment(cu, binding.getName(), id, String.valueOf('\n'));
String label = CorrectionMessages.JavadocTagsSubProcessor_addjavadoc_enumconst_description;
proposals.add(
new AddJavadocCommentProposal(
label,
cu,
IProposalRelevance.ADD_JAVADOC_ENUM,
declaration.getStartPosition(),
comment));
}
}
