internal OpCode(OpCodeValue bc, NormalizedOpCodeValues normalizedValue, int arg, OpCodeMode reg,
OpCodeModeWide wide, bool cannotThrow)
{
Value = bc;
Mode = reg;
WideMode = wide;
NormalizedValue = normalizedValue;
this.arg = arg;
Flags = OpCodeFlags.FixedArg;
if (cannotThrow)
{
Flags |= OpCodeFlags.CannotThrow;
}
}
internal static OpCodeFlowControl FlowControl(NormalizedOpCodeValues bc)
{
switch (bc)
{
case NormalizedOpCodeValues.tableswitch:
case NormalizedOpCodeValues.lookupswitch:
return OpCodeFlowControl.Switch;
case NormalizedOpCodeValues.@goto:
case NormalizedOpCodeValues.goto_finally:
return OpCodeFlowControl.Branch;
case NormalizedOpCodeValues.ifeq:
case NormalizedOpCodeValues.ifne:
case NormalizedOpCodeValues.iflt:
case NormalizedOpCodeValues.ifge:
case NormalizedOpCodeValues.ifgt:
case NormalizedOpCodeValues.ifle:
case NormalizedOpCodeValues.if_icmpeq:
case NormalizedOpCodeValues.if_icmpne:
case NormalizedOpCodeValues.if_icmplt:
case NormalizedOpCodeValues.if_icmpge:
case NormalizedOpCodeValues.if_icmpgt:
case NormalizedOpCodeValues.if_icmple:
case NormalizedOpCodeValues.if_acmpeq:
case NormalizedOpCodeValues.if_acmpne:
case NormalizedOpCodeValues.ifnull:
case NormalizedOpCodeValues.ifnonnull:
return OpCodeFlowControl.CondBranch;
case NormalizedOpCodeValues.ireturn:
case NormalizedOpCodeValues.lreturn:
case NormalizedOpCodeValues.freturn:
case NormalizedOpCodeValues.dreturn:
case NormalizedOpCodeValues.areturn:
case NormalizedOpCodeValues.@return:
return OpCodeFlowControl.Return;
case NormalizedOpCodeValues.athrow:
case NormalizedOpCodeValues.athrow_no_unmap:
case NormalizedOpCodeValues.static_error:
return OpCodeFlowControl.Throw;
default:
return OpCodeFlowControl.Next;
}
}
internal bool IsBranch(NormalizedOpCodeValues bc)
{
switch (Mode)
{
case OpCodeMode.Branch_2:
case OpCodeMode.Branch_4:
case OpCodeMode.Lookupswitch:
case OpCodeMode.Tableswitch:
return true;
default:
return false;
}
}
internal OpCode(OpCodeValue bc, NormalizedOpCodeValues normalizedValue, OpCodeMode reg, OpCodeModeWide wide,
bool cannotThrow)
: this(bc, normalizedValue, 0, reg, wide, cannotThrow)
{
}
internal bool CanThrowException(NormalizedOpCodeValues bc)
{
switch (bc)
{
case NormalizedOpCodeValues.dynamic_invokeinterface:
case NormalizedOpCodeValues.dynamic_invokestatic:
case NormalizedOpCodeValues.dynamic_invokevirtual:
case NormalizedOpCodeValues.dynamic_getstatic:
case NormalizedOpCodeValues.dynamic_putstatic:
case NormalizedOpCodeValues.dynamic_getfield:
case NormalizedOpCodeValues.dynamic_putfield:
case NormalizedOpCodeValues.clone_array:
case NormalizedOpCodeValues.static_error:
case NormalizedOpCodeValues.methodhandle_invoke:
case NormalizedOpCodeValues.methodhandle_invokeexact:
return true;
case NormalizedOpCodeValues.iconst:
case NormalizedOpCodeValues.ldc_nothrow:
return false;
default:
return (Flags & OpCodeFlags.CannotThrow) == 0;
}
}