public static ClassNode getFurthestParent(ClassNode classNode) {
ClassNode parent = classNode.getSuperClass();
while (parent != null && !getFullName(parent).equals("java.lang.Object")) {
classNode = parent;
parent = parent.getSuperClass();
}
return classNode;
}
public static ClassNode getFurthestUnresolvedParent(ClassNode classNode) {
ClassNode parent = classNode.getSuperClass();
while (parent != null
&& !getFullName(parent).equals("java.lang.Object")
&& !parent.isResolved()
&& !Modifier.isAbstract(parent.getModifiers())) {
classNode = parent;
parent = parent.getSuperClass();
}
return classNode;
}
public static boolean hasOrInheritsProperty(ClassNode classNode, String propertyName) {
if (hasProperty(classNode, propertyName)) {
return true;
}
ClassNode parent = classNode.getSuperClass();
while (parent != null && !getFullName(parent).equals("java.lang.Object")) {
if (hasProperty(parent, propertyName)) {
return true;
}
parent = parent.getSuperClass();
}
return false;
}
/**
* Snoops through the declaring class and all parents looking for methods
*
* <ul>
* <li><code>public String getMessage(java.lang.String)</code>
* <li><code>public String getMessage(java.lang.String, java.util.Locale)</code>
* <li><code>public String getMessage(java.lang.String, java.lang.Object[])</code>
* <li><code>public String getMessage(java.lang.String, java.lang.Object[], java.util.Locale)
* </code>
* <li><code>public String getMessage(java.lang.String, java.util.List)</code>
* <li><code>public String getMessage(java.lang.String, java.util.List, java.util.Locale)</code>
* <li><code>public String getMessage(java.lang.String, java.util.Map)</code>
* <li><code>public String getMessage(java.lang.String, java.util.Map, java.util.Locale)</code>
* <li><code>public String getMessage(java.lang.String, java.lang.String)</code>
* <li><code>public String getMessage(java.lang.String, java.lang.String, java.util.Locale)
* </code>
* <li><code>public String getMessage(java.lang.String, java.lang.Object[], java.lang.String)
* </code>
* <li><code>
* public String getMessage(java.lang.String, java.lang.Object[], java.lang.String, java.util.Locale)
* </code>
* <li><code>public String getMessage(java.lang.String, java.util.List, java.lang.String)</code>
* <li><code>
* public String getMessage(java.lang.String, java.util.List, java.lang.String, java.util.Locale)
* </code>
* <li><code>public String getMessage(java.lang.String, java.util.Map, java.lang.String)</code>
* <li><code>
* public String getMessage(java.lang.String, java.util.Map, java.lang.String, java.util.Locale)
* </code>
* </ul>
*
* If any are defined all must be defined or a compilation error results.
*
* @param declaringClass the class to search
* @param sourceUnit the source unit, for error reporting. {@code @NotNull}.
* @return true if property change support should be added
*/
protected static boolean needsMessageSource(ClassNode declaringClass, SourceUnit sourceUnit) {
boolean found = false;
ClassNode consideredClass = declaringClass;
while (consideredClass != null) {
for (MethodNode method : consideredClass.getMethods()) {
// just check length, MOP will match it up
found = method.getName().equals(METHOD_GET_MESSAGE) && method.getParameters().length == 1;
found |= method.getName().equals(METHOD_GET_MESSAGE) && method.getParameters().length == 2;
found |= method.getName().equals(METHOD_GET_MESSAGE) && method.getParameters().length == 3;
found |= method.getName().equals(METHOD_GET_MESSAGE) && method.getParameters().length == 4;
if (found) return false;
}
consideredClass = consideredClass.getSuperClass();
}
if (found) {
sourceUnit
.getErrorCollector()
.addErrorAndContinue(
new SimpleMessage(
"@MessageSourceAware cannot be processed on "
+ declaringClass.getName()
+ " because some but not all of variants of getMessage() were declared in the current class or super classes.",
sourceUnit));
return false;
}
return true;
}
@SuppressWarnings("rawtypes")
public static boolean implementsOrInheritsZeroArgMethod(
ClassNode classNode, String methodName, List ignoreClasses) {
if (implementsZeroArgMethod(classNode, methodName)) {
return true;
}
ClassNode parent = classNode.getSuperClass();
while (parent != null && !getFullName(parent).equals("java.lang.Object")) {
if (!ignoreClasses.contains(parent) && implementsZeroArgMethod(parent, methodName)) {
return true;
}
parent = parent.getSuperClass();
}
return false;
}
public boolean addGeneratedClosureConstructorCall(ConstructorCallExpression call) {
ClassNode classNode = controller.getClassNode();
if (!classNode.declaresInterface(ClassHelper.GENERATED_CLOSURE_Type)) return false;
AsmClassGenerator acg = controller.getAcg();
OperandStack operandStack = controller.getOperandStack();
MethodVisitor mv = controller.getMethodVisitor();
mv.visitVarInsn(ALOAD, 0);
ClassNode callNode = classNode.getSuperClass();
TupleExpression arguments = (TupleExpression) call.getArguments();
if (arguments.getExpressions().size() != 2)
throw new GroovyBugError(
"expected 2 arguments for closure constructor super call, but got"
+ arguments.getExpressions().size());
arguments.getExpression(0).visit(acg);
operandStack.box();
arguments.getExpression(1).visit(acg);
operandStack.box();
// TODO: replace with normal String, p not needed
Parameter p = new Parameter(ClassHelper.OBJECT_TYPE, "_p");
String descriptor =
BytecodeHelper.getMethodDescriptor(ClassHelper.VOID_TYPE, new Parameter[] {p, p});
mv.visitMethodInsn(
INVOKESPECIAL, BytecodeHelper.getClassInternalName(callNode), "<init>", descriptor, false);
operandStack.remove(2);
return true;
}
@Override
public void visitConstructorCallExpression(final ConstructorCallExpression call) {
super.visitConstructorCallExpression(call);
MethodNode target = (MethodNode) call.getNodeMetaData(DIRECT_METHOD_CALL_TARGET);
if (target == null && call.getLineNumber() > 0) {
addError("Target constructor for constructor call expression hasn't been set", call);
} else {
if (target == null) {
// try to find a target
ArgumentListExpression argumentListExpression =
InvocationWriter.makeArgumentList(call.getArguments());
List<Expression> expressions = argumentListExpression.getExpressions();
ClassNode[] args = new ClassNode[expressions.size()];
for (int i = 0; i < args.length; i++) {
args[i] = typeChooser.resolveType(expressions.get(i), classNode);
}
MethodNode constructor =
findMethodOrFail(
call, call.isSuperCall() ? classNode.getSuperClass() : classNode, "<init>", args);
call.putNodeMetaData(DIRECT_METHOD_CALL_TARGET, constructor);
target = constructor;
}
}
if (target != null) {
memorizeInitialExpressions(target);
}
}
private int getSuperClassCount(ClassNode element) {
int count = 0;
while (element != null) {
count++;
element = element.getSuperClass();
}
return count;
}
/**
* This methods creates a list of all methods with this name of the current class and of all super
* classes
*
* @return the methods list
* @see #getDeclaredMethods(String)
*/
public List<MethodNode> getMethods(String name) {
List<MethodNode> answer = new ArrayList<MethodNode>();
ClassNode node = this;
while (node != null) {
answer.addAll(node.getDeclaredMethods(name));
node = node.getSuperClass();
}
return answer;
}
/**
* Finds a field matching the given name in this class or a parent class.
*
* @param name the name of the field of interest
* @return the method matching the given name and parameters or null
*/
public FieldNode getField(String name) {
ClassNode node = this;
while (node != null) {
FieldNode fn = node.getDeclaredField(name);
if (fn != null) return fn;
node = node.getSuperClass();
}
return null;
}
private void changeBaseScriptTypeFromClass(final ClassNode parent, final AnnotationNode node) {
// Expression value = node.getMember("value");
// if (!(value instanceof ClassExpression)) {
// addError("Annotation " + MY_TYPE_NAME + " member 'value' should be a class
// literal.", value);
// return;
// }
changeBaseScriptType(parent, parent, parent.getSuperClass());
}
public static List<MethodNode> getAllMethods(ClassNode type) {
ClassNode node = type;
List<MethodNode> result = new ArrayList<MethodNode>();
while (node != null) {
result.addAll(node.getMethods());
node = node.getSuperClass();
}
return result;
}
private static boolean classNodeUsesReferences(ClassNode classNode) {
boolean ret = classNode.getSuperClass() == ClassHelper.CLOSURE_TYPE;
if (ret) return ret;
if (classNode instanceof InnerClassNode) {
InnerClassNode inner = (InnerClassNode) classNode;
return inner.isAnonymous();
}
return false;
}
public static List<PropertyNode> getAllProperties(ClassNode type) {
ClassNode node = type;
List<PropertyNode> result = new ArrayList<PropertyNode>();
while (node != null) {
result.addAll(node.getProperties());
node = node.getSuperClass();
}
return result;
}
private void checkClassForOverwritingFinal(ClassNode cn) {
ClassNode superCN = cn.getSuperClass();
if (superCN == null) return;
if (!isFinal(superCN.getModifiers())) return;
StringBuilder msg = new StringBuilder();
msg.append("You are not allowed to overwrite the final ");
msg.append(getDescription(superCN));
msg.append(".");
addError(msg.toString(), cn);
}
private boolean hasStaticProperty(ClassNode staticImportType, String propName) {
ClassNode classNode = staticImportType;
while (classNode != null) {
for (PropertyNode pn : classNode.getProperties()) {
if (pn.getName().equals(propName) && pn.isStatic()) return true;
}
classNode = classNode.getSuperClass();
}
return false;
}
/**
* @param classNode the class node for the interface
* @return true if this class or any base class implements the given interface
*/
public boolean implementsInterface(ClassNode classNode) {
ClassNode node = redirect();
do {
if (node.declaresInterface(classNode)) {
return true;
}
node = node.getSuperClass();
} while (node != null);
return false;
}
/**
* Determines if the class or interface represented by the superClass argument is either the same
* as, or is a superclass or superinterface of, the class or interface represented by the
* specified subClass parameter.
*
* @param superClass The super class to check
* @param childClass The sub class the check
* @return true if the childClass is either equal to or a sub class of the specified superClass
*/
private static boolean isAssignableFrom(ClassNode superClass, ClassNode childClass) {
ClassNode currentSuper = childClass;
while (currentSuper != null) {
if (currentSuper.equals(superClass)) {
return true;
}
currentSuper = currentSuper.getSuperClass();
}
return false;
}
private void createKeyConstructor() {
annotatedClass.addConstructor(
ACC_PUBLIC,
params(param(STRING_TYPE, "key")),
NO_EXCEPTIONS,
block(
ASTHelper.isDSLObject(annotatedClass.getSuperClass())
? ctorSuperS(args("key"))
: ctorSuperS(),
assignS(propX(varX("this"), keyField.getName()), varX("key"))));
}
private void checkMethodForWeakerAccessPrivileges(MethodNode mn, ClassNode cn) {
Parameter[] params = mn.getParameters();
for (MethodNode superMethod : cn.getSuperClass().getMethods(mn.getName())) {
Parameter[] superParams = superMethod.getParameters();
if (!hasEqualParameterTypes(params, superParams)) continue;
if ((mn.isPrivate() && !superMethod.isPrivate())
|| (mn.isProtected() && superMethod.isPublic())) {
addWeakerAccessError(cn, mn, params, superMethod);
return;
}
}
}
private void checkMethodsForOverridingFinal(ClassNode cn) {
for (MethodNode method : cn.getMethods()) {
Parameter[] params = method.getParameters();
for (MethodNode superMethod : cn.getSuperClass().getMethods(method.getName())) {
Parameter[] superParams = superMethod.getParameters();
if (!hasEqualParameterTypes(params, superParams)) continue;
if (!superMethod.isFinal()) break;
addInvalidUseOfFinalError(method, params, superMethod.getDeclaringClass());
return;
}
}
}
public static Set<ClassNode> getInterfacesAndSuperInterfaces(ClassNode type) {
Set<ClassNode> res = new HashSet<ClassNode>();
if (type.isInterface()) {
res.add(type);
return res;
}
ClassNode next = type;
while (next != null) {
Collections.addAll(res, next.getInterfaces());
next = next.getSuperClass();
}
return res;
}
private void changeBaseScriptType(
final AnnotatedNode parent, final ClassNode cNode, final ClassNode baseScriptType) {
if (!cNode.isScriptBody()) {
addError("Annotation " + MY_TYPE_NAME + " can only be used within a Script.", parent);
return;
}
if (!baseScriptType.isScript()) {
addError(
"Declared type " + baseScriptType + " does not extend groovy.lang.Script class!", parent);
return;
}
cNode.setSuperClass(baseScriptType);
// Method in base script that will contain the script body code.
MethodNode runScriptMethod = ClassHelper.findSAM(baseScriptType);
// If they want to use a name other than than "run", then make the change.
if (isCustomScriptBodyMethod(runScriptMethod)) {
MethodNode defaultMethod = cNode.getDeclaredMethod("run", Parameter.EMPTY_ARRAY);
// GROOVY-6706: Sometimes an NPE is thrown here.
// The reason is that our transform is getting called more than once sometimes.
if (defaultMethod != null) {
cNode.removeMethod(defaultMethod);
MethodNode methodNode =
new MethodNode(
runScriptMethod.getName(),
runScriptMethod.getModifiers() & ~ACC_ABSTRACT,
runScriptMethod.getReturnType(),
runScriptMethod.getParameters(),
runScriptMethod.getExceptions(),
defaultMethod.getCode());
// The AST node metadata has the flag that indicates that this method is a script body.
// It may also be carrying data for other AST transforms.
methodNode.copyNodeMetaData(defaultMethod);
cNode.addMethod(methodNode);
}
}
// If the new script base class does not have a contextual constructor (g.l.Binding), then we
// won't either.
// We have to do things this way (and rely on just default constructors) because the logic that
// generates
// the constructors for our script class have already run.
if (cNode.getSuperClass().getDeclaredConstructor(CONTEXT_CTOR_PARAMETERS) == null) {
ConstructorNode orphanedConstructor = cNode.getDeclaredConstructor(CONTEXT_CTOR_PARAMETERS);
cNode.removeConstructor(orphanedConstructor);
}
}
public static List<FieldNode> getSuperNonPropertyFields(ClassNode cNode) {
final List<FieldNode> result;
if (cNode == ClassHelper.OBJECT_TYPE) {
result = new ArrayList<FieldNode>();
} else {
result = getSuperNonPropertyFields(cNode.getSuperClass());
}
for (FieldNode fNode : cNode.getFields()) {
if (!fNode.isStatic() && cNode.getProperty(fNode.getName()) == null) {
result.add(fNode);
}
}
return result;
}
public static List<FieldNode> getSuperPropertyFields(ClassNode cNode) {
final List<FieldNode> result;
if (cNode == ClassHelper.OBJECT_TYPE) {
result = new ArrayList<FieldNode>();
} else {
result = getSuperPropertyFields(cNode.getSuperClass());
}
for (PropertyNode pNode : cNode.getProperties()) {
if (!pNode.isStatic()) {
result.add(pNode.getField());
}
}
return result;
}
/**
* @param type the ClassNode of interest
* @return true if this node is derived from the given ClassNode
*/
public boolean isDerivedFrom(ClassNode type) {
if (this.equals(ClassHelper.VOID_TYPE)) {
return type.equals(ClassHelper.VOID_TYPE);
}
if (type.equals(ClassHelper.OBJECT_TYPE)) return true;
ClassNode node = this;
while (node != null) {
if (type.equals(node)) {
return true;
}
node = node.getSuperClass();
}
return false;
}
private void checkImplementsAndExtends(ClassNode node) {
ClassNode cn = node.getSuperClass();
if (cn.isInterface() && !node.isInterface()) {
addError(
"You are not allowed to extend the " + getDescription(cn) + ", use implements instead.",
node);
}
for (ClassNode anInterface : node.getInterfaces()) {
cn = anInterface;
if (!cn.isInterface()) {
addError(
"You are not allowed to implement the " + getDescription(cn) + ", use extends instead.",
node);
}
}
}
private Parameter[] selectAccessibleConstructorFromSuper(ConstructorNode node) {
ClassNode type = node.getDeclaringClass();
ClassNode superType = type.getSuperClass();
for (ConstructorNode c : superType.getDeclaredConstructors()) {
// Only look at things we can actually call
if (c.isPublic() || c.isProtected()) {
return c.getParameters();
}
}
// fall back for parameterless constructor
if (superType.isPrimaryClassNode()) {
return Parameter.EMPTY_ARRAY;
}
return null;
}
public MethodNode tryFindPossibleMethod(String name, Expression arguments) {
int count = 0;
if (arguments instanceof TupleExpression) {
TupleExpression tuple = (TupleExpression) arguments;
// TODO this won't strictly be true when using list expansion in argument calls
count = tuple.getExpressions().size();
} else return null;
MethodNode res = null;
ClassNode node = this;
TupleExpression args = (TupleExpression) arguments;
do {
for (MethodNode method : node.getMethods(name)) {
if (method.getParameters().length == count) {
boolean match = true;
for (int i = 0; i != count; ++i)
if (!args.getType().isDerivedFrom(method.getParameters()[i].getType())) {
match = false;
break;
}
if (match) {
if (res == null) res = method;
else {
if (res.getParameters().length != count) return null;
if (node.equals(this)) return null;
match = true;
for (int i = 0; i != count; ++i)
if (!res.getParameters()[i].getType().equals(method.getParameters()[i].getType())) {
match = false;
break;
}
if (!match) return null;
}
}
}
}
node = node.getSuperClass();
} while (node != null);
return res;
}
boolean makeGetField(
final Expression receiver,
final ClassNode receiverType,
final String fieldName,
final boolean implicitThis,
final boolean samePackage) {
FieldNode field = receiverType.getField(fieldName);
// direct access is allowed if we are in the same class as the declaring class
// or we are in an inner class
if (field != null && isDirectAccessAllowed(field, controller.getClassNode(), samePackage)) {
CompileStack compileStack = controller.getCompileStack();
MethodVisitor mv = controller.getMethodVisitor();
if (field.isStatic()) {
mv.visitFieldInsn(
GETSTATIC,
BytecodeHelper.getClassInternalName(field.getOwner()),
fieldName,
BytecodeHelper.getTypeDescription(field.getOriginType()));
controller.getOperandStack().push(field.getOriginType());
} else {
if (implicitThis) {
compileStack.pushImplicitThis(implicitThis);
}
receiver.visit(controller.getAcg());
if (implicitThis) compileStack.popImplicitThis();
if (!controller.getOperandStack().getTopOperand().isDerivedFrom(field.getOwner())) {
mv.visitTypeInsn(CHECKCAST, BytecodeHelper.getClassInternalName(field.getOwner()));
}
mv.visitFieldInsn(
GETFIELD,
BytecodeHelper.getClassInternalName(field.getOwner()),
fieldName,
BytecodeHelper.getTypeDescription(field.getOriginType()));
}
controller.getOperandStack().replace(field.getOriginType());
return true;
}
ClassNode superClass = receiverType.getSuperClass();
if (superClass != null) {
return makeGetField(receiver, superClass, fieldName, implicitThis, false);
}
return false;
}