/**
* 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);
}
}
/**
* If constructor does not define a call to super, then transform constructor to get String,int
* parameters at beginning and add call super(String,int).
*/
private void transformConstructor(ConstructorNode ctor, boolean isAic) {
boolean chainedThisConstructorCall = false;
ConstructorCallExpression cce = null;
if (ctor.firstStatementIsSpecialConstructorCall()) {
Statement code = ctor.getFirstStatement();
cce = (ConstructorCallExpression) ((ExpressionStatement) code).getExpression();
if (cce.isSuperCall()) return;
// must be call to this(...)
chainedThisConstructorCall = true;
}
// we need to add parameters
Parameter[] oldP = ctor.getParameters();
Parameter[] newP = new Parameter[oldP.length + 2];
String stringParameterName = getUniqueVariableName("__str", ctor.getCode());
newP[0] = new Parameter(ClassHelper.STRING_TYPE, stringParameterName);
String intParameterName = getUniqueVariableName("__int", ctor.getCode());
newP[1] = new Parameter(ClassHelper.int_TYPE, intParameterName);
System.arraycopy(oldP, 0, newP, 2, oldP.length);
ctor.setParameters(newP);
VariableExpression stringVariable = new VariableExpression(newP[0]);
VariableExpression intVariable = new VariableExpression(newP[1]);
if (chainedThisConstructorCall) {
TupleExpression args = (TupleExpression) cce.getArguments();
List<Expression> argsExprs = args.getExpressions();
argsExprs.add(0, stringVariable);
argsExprs.add(1, intVariable);
} else {
// add a super call
List<Expression> args = new ArrayList<Expression>();
args.add(stringVariable);
args.add(intVariable);
if (isAic) {
for (Parameter parameter : oldP) {
args.add(new VariableExpression(parameter.getName()));
}
}
cce = new ConstructorCallExpression(ClassNode.SUPER, new ArgumentListExpression(args));
BlockStatement code = new BlockStatement();
code.addStatement(new ExpressionStatement(cce));
Statement oldCode = ctor.getCode();
if (oldCode != null) code.addStatement(oldCode);
ctor.setCode(code);
}
}
