|
public GenCodeUnboxed ( RHC rhc, |
||
| rhc | RHC | |
| objx | ||
| context | ||
| 리턴 | Expression | |
private Expression GenTestExprForInts(ObjExpr objx, GenContext context, Type exprType, LabelTarget defaultLabel)
{
if (exprType == null)
{
if (RT.booleanCast(RT.WarnOnReflectionVar.deref()))
{
RT.errPrintWriter().WriteLine("Performance warning, {0}:{1} - case has int tests, but tested expression is not primitive.",
Compiler.SourcePathVar.deref(), RT.get(_sourceSpan, RT.StartLineKey));
}
ParameterExpression parm = Expression.Parameter(typeof(object), "p");
Expression initParm = Expression.Assign(parm, _expr.GenCode(RHC.Expression, objx, context));
Expression testType = Expression.Call(null, Compiler.Method_Util_IsNonCharNumeric, parm); // matching JVM's handling of char as non-integer
Expression expr = GenShiftMask(Expression.Call(null, Compiler.Method_Util_ConvertToInt, parm));
return(Expression.Block(
new ParameterExpression[] { parm },
initParm,
Expression.IfThen(Expression.Not(testType), Expression.Goto(defaultLabel)),
expr));
}
else if (exprType == typeof(long) || exprType == typeof(int) || exprType == typeof(short) || exprType == typeof(byte) || exprType == typeof(ulong) || exprType == typeof(uint) || exprType == typeof(ushort) || exprType == typeof(sbyte))
{
Expression expr = Expression.Convert(_expr.GenCodeUnboxed(RHC.Expression, objx, context), typeof(int));
return(GenShiftMask(expr));
}
else
{
return(Expression.Goto(defaultLabel));
}
}