public ExprConcat CreateConcat(Expr op1, Expr op2)
{
Debug.Assert(op1?.Type != null);
Debug.Assert(op2?.Type != null);
Debug.Assert(op1.Type.isPredefType(PredefinedType.PT_STRING) || op2.Type.isPredefType(PredefinedType.PT_STRING));
CType type = op1.Type;
if (!type.isPredefType(PredefinedType.PT_STRING))
{
type = op2.Type;
}
Debug.Assert(type.isPredefType(PredefinedType.PT_STRING));
ExprConcat rval = new ExprConcat();
rval.Kind = ExpressionKind.EK_CONCAT;
rval.Type = type;
rval.Flags = 0;
rval.FirstArgument = op1;
rval.SecondArgument = op2;
Debug.Assert(rval != null);
return(rval);
}
protected override Expr VisitCONCAT(ExprConcat expr)
{
Debug.Assert(expr != null);
PREDEFMETH pdm;
if (expr.FirstArgument.Type.isPredefType(PredefinedType.PT_STRING) && expr.SecondArgument.Type.isPredefType(PredefinedType.PT_STRING))
{
pdm = PREDEFMETH.PM_STRING_CONCAT_STRING_2;
}
else
{
pdm = PREDEFMETH.PM_STRING_CONCAT_OBJECT_2;
}
Expr p1 = Visit(expr.FirstArgument);
Expr p2 = Visit(expr.SecondArgument);
MethodSymbol method = GetPreDefMethod(pdm);
Expr methodInfo = GetExprFactory().CreateMethodInfo(method, GetSymbolLoader().GetPredefindType(PredefinedType.PT_STRING), null);
return(GenerateCall(PREDEFMETH.PM_EXPRESSION_ADD_USER_DEFINED, p1, p2, methodInfo));
}
public ExprConcat CreateConcat(Expr op1, Expr op2)
{
Debug.Assert(op1?.Type != null);
Debug.Assert(op2?.Type != null);
Debug.Assert(op1.Type.isPredefType(PredefinedType.PT_STRING) || op2.Type.isPredefType(PredefinedType.PT_STRING));
CType type = op1.Type;
if (!type.isPredefType(PredefinedType.PT_STRING))
{
type = op2.Type;
}
Debug.Assert(type.isPredefType(PredefinedType.PT_STRING));
ExprConcat rval = new ExprConcat(type);
rval.FirstArgument = op1;
rval.SecondArgument = op2;
return(rval);
}
protected virtual Expr VisitCONCAT(ExprConcat pExpr)
{
return(VisitEXPR(pExpr));
}
