static InstructionPushPopInfo?GetInstructionPops(InstructionVM instr)
{
var code = instr.Code;
if (code == Code.Pop || code == Code.Nop)
{
return(null);
}
int pushes, pops;
instr.CalculateStackUsage(out pushes, out pops);
if (pops < 0)
{
return(null);
}
if (pushes == 1 && (code == Code.Call || code == Code.Callvirt || code == Code.Calli))
{
return(new InstructionPushPopInfo(pops, GetMethodSig(instr.InstructionOperandVM.Other).GetRetType()));
}
if (pushes == 1 && code == Code.Newobj)
{
var ctor = instr.InstructionOperandVM.Other as IMethod;
return(new InstructionPushPopInfo(pops, ctor == null ? null : ctor.DeclaringType.ToTypeSig()));
}
if (pushes != 0)
{
return(null);
}
return(new InstructionPushPopInfo(pops));
}
static InstructionPushPopInfo? GetInstructionPops(InstructionVM instr)
{
var code = instr.Code;
if (code == Code.Pop || code == Code.Nop)
return null;
int pushes, pops;
instr.CalculateStackUsage(out pushes, out pops);
if (pops < 0)
return null;
if (pushes == 1 && (code == Code.Call || code == Code.Callvirt || code == Code.Calli))
return new InstructionPushPopInfo(pops, GetMethodSig(instr.InstructionOperandVM.Other).GetRetType());
if (pushes == 1 && code == Code.Newobj) {
var ctor = instr.InstructionOperandVM.Other as IMethod;
return new InstructionPushPopInfo(pops, ctor == null ? null : ctor.DeclaringType.ToTypeSig());
}
if (pushes != 0)
return null;
return new InstructionPushPopInfo(pops);
}
