public void visitCodeAttribute(Clazz clazz, Method method, CodeAttribute codeAttribute) {
// DEBUG =
// clazz.getName().equals("abc/Def") &&
// method.getName(clazz).equals("abc");
// The minimum variable size is determined by the arguments.
codeAttribute.u2maxLocals =
ClassUtil.internalMethodParameterSize(method.getDescriptor(clazz), method.getAccessFlags());
if (DEBUG) {
System.out.println(
"VariableSizeUpdater: "
+ clazz.getName()
+ "."
+ method.getName(clazz)
+ method.getDescriptor(clazz));
System.out.println(" Max locals: " + codeAttribute.u2maxLocals + " <- parameters");
}
// Go over all instructions.
codeAttribute.instructionsAccept(clazz, method, this);
// Remove the unused variables of the attributes.
codeAttribute.attributesAccept(clazz, method, variableCleaner);
}
public void visitCodeAttribute(Clazz clazz, Method method, CodeAttribute codeAttribute) {
markAsUsed(codeAttribute);
markConstant(clazz, codeAttribute.u2attributeNameIndex);
// Mark the constant pool entries referenced by the instructions,
// by the exceptions, and by the attributes.
codeAttribute.instructionsAccept(clazz, method, this);
codeAttribute.exceptionsAccept(clazz, method, this);
codeAttribute.attributesAccept(clazz, method, this);
}
public void visitVariableInstruction(
Clazz clazz,
Method method,
CodeAttribute codeAttribute,
int offset,
VariableInstruction variableInstruction) {
int variableSize = variableInstruction.variableIndex + 1;
if (variableInstruction.isCategory2()) {
variableSize++;
}
if (codeAttribute.u2maxLocals < variableSize) {
codeAttribute.u2maxLocals = variableSize;
if (DEBUG) {
System.out.println(
" Max locals: "
+ codeAttribute.u2maxLocals
+ " <- "
+ variableInstruction.toString(offset));
}
}
}
