private void completeEnum(ClassNode enumClass) {
boolean isAic = isAnonymousInnerClass(enumClass);
if (enumClass.getDeclaredConstructors().size() == 0) {
addImplicitConstructors(enumClass, isAic);
}
for (ConstructorNode ctor : enumClass.getDeclaredConstructors()) {
transformConstructor(ctor, isAic);
}
}
private boolean validateConstructors(ClassNode cNode) {
if (cNode.getDeclaredConstructors().size() != 0) {
// TODO: allow constructors which only call provided constructor?
addError(
"Explicit constructors not allowed for "
+ ImmutableASTTransformation.MY_TYPE_NAME
+ " class: "
+ cNode.getNameWithoutPackage(),
cNode.getDeclaredConstructors().get(0));
}
return true;
}
/**
* Obtains the default constructor for the given class node.
*
* @param classNode The class node
* @return The default constructor or null if there isn't one
*/
public static ConstructorNode getDefaultConstructor(ClassNode classNode) {
for (ConstructorNode cons : classNode.getDeclaredConstructors()) {
if (cons.getParameters().length == 0) {
return cons;
}
}
return null;
}
/**
* Finds a constructor for the given class node and parameter types
*
* @param classNode The class node
* @param constructorParams The parameter types
* @return The located constructor or null
*/
public static ConstructorNode findConstructor(
ClassNode classNode, Parameter[] constructorParams) {
List<ConstructorNode> declaredConstructors = classNode.getDeclaredConstructors();
for (ConstructorNode declaredConstructor : declaredConstructors) {
if (parametersEqual(constructorParams, declaredConstructor.getParameters())) {
return declaredConstructor;
}
}
return null;
}
private void printConstructors(PrintWriter out, ClassNode classNode) {
@SuppressWarnings("unchecked")
List<ConstructorNode> constrs = (List<ConstructorNode>) constructors.clone();
if (constrs != null) {
constrs.addAll(classNode.getDeclaredConstructors());
for (ConstructorNode constr : constrs) {
printConstructor(out, classNode, constr);
}
}
}
static {
final List<ConstructorNode> declaredConstructors = INTRANGE_TYPE.getDeclaredConstructors();
ConstructorNode target = null;
for (ConstructorNode constructor : declaredConstructors) {
final Parameter[] parameters = constructor.getParameters();
if (parameters.length == 3
&& ClassHelper.boolean_TYPE.equals(parameters[0].getOriginType())) {
target = constructor;
break;
}
}
INTRANGE_CTOR = target;
}
public void writeClosure(ClosureExpression expression) {
CompileStack compileStack = controller.getCompileStack();
MethodVisitor mv = controller.getMethodVisitor();
ClassNode classNode = controller.getClassNode();
AsmClassGenerator acg = controller.getAcg();
// generate closure as public class to make sure it can be properly invoked by classes of the
// Groovy runtime without circumventing JVM access checks (see CachedMethod for example).
ClassNode closureClass = getOrAddClosureClass(expression, ACC_PUBLIC);
String closureClassinternalName = BytecodeHelper.getClassInternalName(closureClass);
List constructors = closureClass.getDeclaredConstructors();
ConstructorNode node = (ConstructorNode) constructors.get(0);
Parameter[] localVariableParams = node.getParameters();
mv.visitTypeInsn(NEW, closureClassinternalName);
mv.visitInsn(DUP);
if (controller.isStaticMethod() || compileStack.isInSpecialConstructorCall()) {
(new ClassExpression(classNode)).visit(acg);
(new ClassExpression(controller.getOutermostClass())).visit(acg);
} else {
mv.visitVarInsn(ALOAD, 0);
controller.getOperandStack().push(ClassHelper.OBJECT_TYPE);
loadThis();
}
// now let's load the various parameters we're passing
// we start at index 2 because the first variable we pass
// is the owner instance and at this point it is already
// on the stack
for (int i = 2; i < localVariableParams.length; i++) {
Parameter param = localVariableParams[i];
String name = param.getName();
loadReference(name, controller);
if (param.getNodeMetaData(ClosureWriter.UseExistingReference.class) == null) {
param.setNodeMetaData(ClosureWriter.UseExistingReference.class, Boolean.TRUE);
}
}
// we may need to pass in some other constructors
// cv.visitMethodInsn(INVOKESPECIAL, innerClassinternalName, "<init>", prototype + ")V");
mv.visitMethodInsn(
INVOKESPECIAL,
closureClassinternalName,
"<init>",
BytecodeHelper.getMethodDescriptor(ClassHelper.VOID_TYPE, localVariableParams),
false);
controller.getOperandStack().replace(ClassHelper.CLOSURE_TYPE, localVariableParams.length);
}
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;
}
/** Add map and no-arg constructor or mirror those of the superclass (i.e. base enum). */
private void addImplicitConstructors(ClassNode enumClass, boolean aic) {
if (aic) {
ClassNode sn = enumClass.getSuperClass();
List<ConstructorNode> sctors = new ArrayList<ConstructorNode>(sn.getDeclaredConstructors());
if (sctors.size() == 0) {
addMapConstructors(enumClass, false);
} else {
for (ConstructorNode constructorNode : sctors) {
ConstructorNode init =
new ConstructorNode(
Opcodes.ACC_PUBLIC,
constructorNode.getParameters(),
ClassNode.EMPTY_ARRAY,
new BlockStatement());
enumClass.addConstructor(init);
}
}
} else {
addMapConstructors(enumClass, false);
}
}