public override void ExitCast1(ssuplParser.Cast1Context context)
{
var lhstype = stringToType(context.TYPE().GetText());
var rhstype = type(context.expr());
typeAttr.Put(context, lhstype);
if (lhstype == rhstype)
{
}
//casting TO an int FROM a double
else if (lhstype == VarType.INT && rhstype == VarType.DOUBLE)
{
code.Put(context,
code.Get(context.expr()),
"movq xmm0, [rsp]", //pop double from stack
"add rsp,8",
"cvttsd2si rax, xmm0", //convert double to int
"push rax"
);
}
//casting TO a double FROM an int
else if (lhstype == VarType.DOUBLE && rhstype == VarType.INT)
{
code.Put(context,
code.Get(context.expr()),
"pop rax", //Get the int
"cvtsi2sd xmm0, rax", //convert int to double
"sub rsp,8", //can't use push pop with doubles
"movq [rsp], xmm0" //push back on to stack
);
}
else
{
throw new Exception("ICE");
}
}
/// <summary>
/// Exit a parse tree produced by the <c>cast1</c>
/// labeled alternative in <see cref="ssuplParser.cast"/>.
/// <para>The default implementation does nothing.</para>
/// </summary>
/// <param name="context">The parse tree.</param>
public virtual void ExitCast1([NotNull] ssuplParser.Cast1Context context)
{
}
