public static IEnumerable <DisasmMethodCall> ExtractMethodCalls(Disassembler disassembler, Dictionary <string, int> methodArgumentCountTable)
{
var instructions = disassembler.Instructions.ToArray();
var result = new List <DisasmMethodCall>();
int index = 0;
var regs = new VMObject[16];
var stack = new Stack <VMObject>();
while (index < instructions.Length)
{
var instruction = instructions[index];
switch (instruction.Opcode)
{
case Opcode.LOAD:
{
var dst = (byte)instruction.Args[0];
var type = (VMType)instruction.Args[1];
var bytes = (byte[])instruction.Args[2];
regs[dst] = new VMObject();
regs[dst].SetValue(bytes, type);
break;
}
case Opcode.PUSH:
{
var src = (byte)instruction.Args[0];
var val = regs[src];
var temp = new VMObject();
temp.Copy(val);
stack.Push(temp);
break;
}
case Opcode.CTX:
{
var src = (byte)instruction.Args[0];
var dst = (byte)instruction.Args[1];
regs[dst] = new VMObject();
regs[dst].Copy(regs[src]);
break;
}
case Opcode.SWITCH:
{
var src = (byte)instruction.Args[0];
var val = regs[src];
var contractName = regs[src].AsString();
var methodName = stack.Pop().AsString();
var args = PopArgs(contractName, methodName, stack, methodArgumentCountTable);
result.Add(new DisasmMethodCall()
{
MethodName = methodName, ContractName = contractName, Arguments = args
});
break;
}
case Opcode.EXTCALL:
{
var src = (byte)instruction.Args[0];
var methodName = regs[src].AsString();
var args = PopArgs(null, methodName, stack, methodArgumentCountTable);
result.Add(new DisasmMethodCall()
{
MethodName = methodName, ContractName = "", Arguments = args
});
break;
}
}
index++;
}
return(result);
}