private void createMethod(Element method) throws IllegalXMLVMException {
il = new InstructionList();
instructionHandlerManager = new InstructionHandlerManager(il);
String methodName = method.getAttributeValue("name");
Element signature = method.getChild("signature", nsXMLVM);
Type retType = collectReturnType(signature);
Type[] argTypes = collectArgumentTypes(signature);
short accessFlags = getAccessFlags(method);
if (methodName.equals(
".cctor")) // Same concept, different names in .net/JVM. Note we are doing init of statics
// for a class
{
System.out.println("Changed name to clinit");
methodName = "<clinit>";
accessFlags = 0x8; // static
}
MethodGen m =
new MethodGen(
accessFlags, retType, argTypes, null, methodName, fullQualifiedClassName, il, _cp);
Element code = method.getChild("code", nsXMLVM);
createCode(code);
instructionHandlerManager.checkConsistency();
m.setMaxLocals();
m.setMaxStack();
_cg.addMethod(m.getMethod());
il.dispose();
}
private void createCode(Element code) throws IllegalXMLVMException {
List<Element> instructions = code.getChildren();
for (Element inst : instructions) {
String name = inst.getName();
String opcMethodName =
"createInstruction" + name.substring(0, 1).toUpperCase() + name.substring(1);
Class appClazz;
Method opcMeth;
Class[] paramTypes = {Element.class};
Object[] params = {inst};
appClazz = this.getClass();
Object newInstr = null;
try {
opcMeth = appClazz.getMethod(opcMethodName, paramTypes);
newInstr = opcMeth.invoke(this, params);
} catch (NoSuchMethodException ex) {
throw new IllegalXMLVMException(
"Illegal instruction 1, unable to find method "
+ opcMethodName
+ " for '"
+ name
+ "'");
} catch (InvocationTargetException ex) {
ex.printStackTrace();
throw new IllegalXMLVMException("Illegal instruction 2 '" + name + "'");
} catch (IllegalAccessException ex) {
throw new IllegalXMLVMException("Illegal instruction 3 '" + name + "'");
}
if (newInstr != null) {
InstructionHandle ih = null;
if (newInstr instanceof BranchInstruction) ih = il.append((BranchInstruction) newInstr);
else if (newInstr instanceof CompoundInstruction)
ih = il.append((CompoundInstruction) newInstr);
else if (newInstr instanceof Instruction) ih = il.append((Instruction) newInstr);
instructionHandlerManager.registerInstructionHandle(ih);
}
}
}
public Instruction createInstructionIfne(Element inst) {
int id = Integer.parseInt(inst.getAttributeValue("label"));
BranchInstruction bi = new IFNE(null);
instructionHandlerManager.registerBranchInstruction(bi, id);
return bi;
}
public Instruction createInstructionLabel(Element inst) throws IllegalXMLVMException {
int id = Integer.parseInt(inst.getAttributeValue("id"));
instructionHandlerManager.setLabelID(id);
return null;
}
