public static Value[] getInitializedArray(int arraySize, MethodDefinition method, ref int newarrIndex, Code stelemOpCode)
{
var resultValueArray = new Value[arraySize];
var emulator = new InstructionEmulator(method.HasThis, false, method.Parameters, method.Body.Variables);
var theArray = new UnknownValue();
emulator.push(theArray);
var instructions = method.Body.Instructions;
int i;
for (i = newarrIndex + 1; i < instructions.Count; i++) {
var instr = instructions[i];
if (instr.OpCode.FlowControl != FlowControl.Next)
break;
if (instr.OpCode.Code == Code.Newarr)
break;
if (instr.OpCode.Code == stelemOpCode) {
var value = emulator.pop();
var index = emulator.pop() as Int32Value;
var array = emulator.pop();
if (ReferenceEquals(array, theArray) && index != null && index.allBitsValid()) {
if (0 <= index.value && index.value < resultValueArray.Length)
resultValueArray[index.value] = value;
}
}
else
emulator.emulate(instr);
}
if (i != newarrIndex + 1)
i--;
newarrIndex = i;
return resultValueArray;
}
public static Value[] GetInitializedArray(int arraySize, MethodDef method, ref int newarrIndex, Code stelemOpCode) {
var resultValueArray = new Value[arraySize];
var emulator = new InstructionEmulator(method);
var theArray = new UnknownValue();
emulator.Push(theArray);
var instructions = method.Body.Instructions;
int i;
for (i = newarrIndex + 1; i < instructions.Count; i++) {
var instr = instructions[i];
if (instr.OpCode.FlowControl != FlowControl.Next)
break;
if (instr.OpCode.Code == Code.Newarr)
break;
switch (instr.OpCode.Code) {
case Code.Newarr:
case Code.Newobj:
goto done;
case Code.Stloc:
case Code.Stloc_S:
case Code.Stloc_0:
case Code.Stloc_1:
case Code.Stloc_2:
case Code.Stloc_3:
case Code.Starg:
case Code.Starg_S:
case Code.Stsfld:
case Code.Stfld:
if (emulator.Peek() == theArray && i != newarrIndex + 1 && i != newarrIndex + 2)
goto done;
break;
}
if (instr.OpCode.Code == stelemOpCode) {
var value = emulator.Pop();
var index = emulator.Pop() as Int32Value;
var array = emulator.Pop();
if (ReferenceEquals(array, theArray) && index != null && index.AllBitsValid()) {
if (0 <= index.Value && index.Value < resultValueArray.Length)
resultValueArray[index.Value] = value;
}
}
else
emulator.Emulate(instr);
}
done:
if (i != newarrIndex + 1)
i--;
newarrIndex = i;
return resultValueArray;
}