private void generateInvokeEntryPoint(
GenScope scope,
InstructionList il,
InstructionFactory ifact,
String transformationName,
String entryPointName,
LocalVariableGen lvg) {
// Configure the transformation
il.append(InstructionFactory.DUP);
il.append(
ifact.createInvoke(
DefaultTypes.IdcTransformation.getClassName(),
"configure_",
Type.VOID,
new Type[] {},
Constants.INVOKEVIRTUAL));
// TODO: Configure the models properly, not as I'm doing directly in instantiateTransformation
// directly
// Put the params into the stack and invoke, but first check the type of the transformation
// object
ObjectType transformationType = new ObjectType(transformationName);
il.append(ifact.createCheckCast(transformationType));
// [Transformation, param1, ..., paramN]
EList<Variable> params = this.getEntryPointParameters();
Type[] types = new Type[params.size()];
int i = 0;
for (Variable variable : params) {
scope.loadVariable(variable, il);
types[i++] = Type.OBJECT;
}
il.append(
ifact.createInvoke(
transformationType.getClassName(),
entryPointName,
Type.OBJECT,
types,
Constants.INVOKEVIRTUAL));
il.append(new ASTORE(lvg.getIndex()));
}
@Override
public void generate(GenScope scope) {
InstructionList il = scope.getInstructionList();
InstructionFactory ifact = scope.getInstructionFactory();
ConstantPoolGen cpg = scope.getConstantPool();
String transformationName = this.getTransformationName();
String entryPointName = this.getEntryPointName();
LocalVariableGen lvg = scope.newLocalVariable(this, Type.OBJECT);
// Probably this could be improved, but for the moment a transformation
// object will provide a facility to instantiate another transformation
// Create the new transformation
// [This_Transformation, "TransformationName"] -> instantiateTransformation ->
// [Created_Transformation]
scope.generateGetTransformation();
il.append(ifact.createConstant(transformationName));
il.append(
ifact.createInvoke(
DefaultTypes.IdcTransformation.getClassName(),
"instantiateTransformation",
DefaultTypes.IdcTransformation,
new Type[] {Type.STRING},
Constants.INVOKEVIRTUAL));
// There are two cases
//
// 1. Explicit invocation of a transformation rule
if (entryPointName != null) {
generateInvokeEntryPoint(scope, il, ifact, transformationName, entryPointName, lvg);
} else {
generateInvokeTransformation(scope, il, ifact, transformationName, lvg);
}
}
private void generateInvokeTransformation(
GenScope scope,
InstructionList il,
InstructionFactory ifact,
String transformationName,
LocalVariableGen lvg) {
il.append(InstructionFactory.DUP);
il.append(InstructionFactory.DUP);
il.append(InstructionFactory.DUP);
// Configure the invoked transformation: view filter
scope.loadVariable(this.getInputViewFilter(), il);
il.append(
ifact.createInvoke(
DefaultTypes.IdcTransformation.getClassName(),
"configure_invocation_",
Type.VOID,
new Type[] {DefaultTypes.RunnableClosure},
Constants.INVOKEVIRTUAL));
// Configure the transformation
il.append(InstructionFactory.DUP);
il.append(
ifact.createInvoke(
DefaultTypes.IdcTransformation.getClassName(),
"configure_",
Type.VOID,
new Type[] {},
Constants.INVOKEVIRTUAL));
// Set parameters
for (NamedInvocationParameter p : this.getParameters()) {
il.append(InstructionFactory.DUP);
il.append(ifact.createConstant(p.getFormalName()));
scope.loadVariable(p.getResult(), il);
il.append(
ifact.createInvoke(
DefaultTypes.IdcTransformation.getClassName(),
"setParameterValue",
Type.VOID,
new Type[] {Type.STRING, Type.OBJECT},
Constants.INVOKEVIRTUAL));
}
// Start the transformation
il.append(
ifact.createInvoke(
DefaultTypes.IdcTransformation.getClassName(),
"start_",
Type.VOID,
new Type[] {},
Constants.INVOKEVIRTUAL));
// Get a target element from a trace
if (this.getOutputResolutionSourceElement() != null) {
scope.loadVariable(this.getOutputResolutionSourceElement(), il);
il.append(ifact.createConstant(this.getQueueName()));
il.append(ifact.createConstant(this.getSrcTraceAttributeName()));
il.append(ifact.createConstant(this.getTgtTraceAttributeName()));
il.append(
ifact.createInvoke(
DefaultTypes.IdcTransformation.getClassName(),
"retrieve_from_invocation_",
Type.OBJECT,
new Type[] {Type.OBJECT, Type.STRING, Type.STRING, Type.STRING},
Constants.INVOKEVIRTUAL));
} else {
il.append(InstructionFactory.ACONST_NULL);
}
il.append(new ASTORE(lvg.getIndex()));
}
