private void memorizeInitialExpressions(final MethodNode node) {
// add node metadata for default parameters because they are erased by the Verifier
if (node.getParameters() != null) {
for (Parameter parameter : node.getParameters()) {
parameter.putNodeMetaData(
StaticTypesMarker.INITIAL_EXPRESSION, parameter.getInitialExpression());
}
}
}
/**
* This method is used to add "bridge" methods for private methods of an inner/outer class, so
* that the outer class is capable of calling them. It does basically the same job as access$000
* like methods in Java.
*
* @param node an inner/outer class node for which to generate bridge methods
*/
@SuppressWarnings("unchecked")
private void addPrivateBridgeMethods(final ClassNode node) {
Set<ASTNode> accessedMethods =
(Set<ASTNode>) node.getNodeMetaData(StaticTypesMarker.PV_METHODS_ACCESS);
if (accessedMethods == null) return;
List<MethodNode> methods = new ArrayList<MethodNode>(node.getAllDeclaredMethods());
Map<MethodNode, MethodNode> privateBridgeMethods =
(Map<MethodNode, MethodNode>) node.getNodeMetaData(PRIVATE_BRIDGE_METHODS);
if (privateBridgeMethods != null) {
// private bridge methods already added
return;
}
privateBridgeMethods = new HashMap<MethodNode, MethodNode>();
int i = -1;
final int access = Opcodes.ACC_STATIC | Opcodes.ACC_PUBLIC | Opcodes.ACC_SYNTHETIC;
for (MethodNode method : methods) {
if (accessedMethods.contains(method)) {
i++;
Parameter[] methodParameters = method.getParameters();
Parameter[] newParams = new Parameter[methodParameters.length + 1];
System.arraycopy(methodParameters, 0, newParams, 1, methodParameters.length);
newParams[0] = new Parameter(node.getPlainNodeReference(), "$that");
Expression arguments;
if (method.getParameters() == null || method.getParameters().length == 0) {
arguments = ArgumentListExpression.EMPTY_ARGUMENTS;
} else {
List<Expression> args = new LinkedList<Expression>();
for (Parameter parameter : methodParameters) {
args.add(new VariableExpression(parameter));
}
arguments = new ArgumentListExpression(args);
}
Expression receiver =
method.isStatic() ? new ClassExpression(node) : new VariableExpression(newParams[0]);
MethodCallExpression mce = new MethodCallExpression(receiver, method.getName(), arguments);
mce.setMethodTarget(method);
ExpressionStatement returnStatement = new ExpressionStatement(mce);
MethodNode bridge =
node.addMethod(
"access$" + i,
access,
method.getReturnType(),
newParams,
method.getExceptions(),
returnStatement);
privateBridgeMethods.put(method, bridge);
bridge.addAnnotation(new AnnotationNode(COMPILESTATIC_CLASSNODE));
}
}
if (!privateBridgeMethods.isEmpty()) {
node.setNodeMetaData(PRIVATE_BRIDGE_METHODS, privateBridgeMethods);
}
}
@Override
public void visitMethod(final MethodNode node) {
if (isSkipMode(node)) {
node.putNodeMetaData(STATIC_COMPILE_NODE, false);
}
super.visitMethod(node);
checkForConstructorWithCSButClassWithout(node);
}
/**
* If we are in a constructor, that is static compiled, but in a class, that is not, it may happen
* that init code from object initializers, fields or properties is added into the constructor
* code. The backend assumes a purely static contructor, so it may fail if it encounters dynamic
* code here. Thus we make this kind of code fail
*/
private void checkForConstructorWithCSButClassWithout(MethodNode node) {
if (!(node instanceof ConstructorNode)) return;
Object meta = node.getNodeMetaData(STATIC_COMPILE_NODE);
if (!Boolean.TRUE.equals(meta)) return;
ClassNode clz = typeCheckingContext.getEnclosingClassNode();
meta = clz.getNodeMetaData(STATIC_COMPILE_NODE);
if (Boolean.TRUE.equals(meta)) return;
if (clz.getObjectInitializerStatements().isEmpty()
&& clz.getFields().isEmpty()
&& clz.getProperties().isEmpty()) {
return;
}
addStaticTypeError(
"Cannot statically compile constructor implicitly including non static elements from object initializers, properties or fields.",
node);
}
static {
ARRAYLIST_CONSTRUCTOR =
new ConstructorNode(
ACC_PUBLIC, Parameter.EMPTY_ARRAY, ClassNode.EMPTY_ARRAY, EmptyStatement.INSTANCE);
ARRAYLIST_CONSTRUCTOR.setDeclaringClass(StaticCompilationVisitor.ARRAYLIST_CLASSNODE);
}
