protected virtual Expr VisitZEROINIT(ExprZeroInit pExpr) { return(VisitEXPR(pExpr)); }
protected override Expr VisitZEROINIT(ExprZeroInit expr) { Debug.Assert(expr != null); return(GenerateConstant(expr)); }
private Expr CreateZeroInit(ExprTypeOrNamespace pTypeExpr, Expr pOptionalOriginalConstructorCall, bool isConstructor) { Debug.Assert(pTypeExpr != null); CType pType = pTypeExpr.TypeOrNamespace.AsType(); bool bIsError = false; if (pType.isEnumType()) { // For enum types, we create a constant that has the default value // as an object pointer. ExprConstant expr = CreateConstant(pType, ConstVal.Get(Activator.CreateInstance(pType.AssociatedSystemType))); return(expr); } switch (pType.fundType()) { default: bIsError = true; break; case FUNDTYPE.FT_PTR: { CType nullType = GetTypes().GetNullType(); // It looks like this if is always false ... if (nullType.fundType() == pType.fundType()) { // Create a constant here. ExprConstant expr = CreateConstant(pType, ConstVal.GetDefaultValue(ConstValKind.IntPtr)); return(expr); } // Just allocate a new node and fill it in. ExprCast cast = CreateCast(0, pTypeExpr, CreateNull()); return(cast); } case FUNDTYPE.FT_REF: case FUNDTYPE.FT_I1: case FUNDTYPE.FT_U1: case FUNDTYPE.FT_I2: case FUNDTYPE.FT_U2: case FUNDTYPE.FT_I4: case FUNDTYPE.FT_U4: case FUNDTYPE.FT_I8: case FUNDTYPE.FT_U8: case FUNDTYPE.FT_R4: case FUNDTYPE.FT_R8: { ExprConstant expr = CreateConstant(pType, ConstVal.GetDefaultValue(pType.constValKind())); ExprConstant exprInOriginal = CreateConstant(pType, ConstVal.GetDefaultValue(pType.constValKind())); exprInOriginal.OptionalConstructorCall = pOptionalOriginalConstructorCall; return(expr); } case FUNDTYPE.FT_STRUCT: if (pType.isPredefType(PredefinedType.PT_DECIMAL)) { ExprConstant expr = CreateConstant(pType, ConstVal.GetDefaultValue(pType.constValKind())); ExprConstant exprOriginal = CreateConstant(pType, ConstVal.GetDefaultValue(pType.constValKind())); exprOriginal.OptionalConstructorCall = pOptionalOriginalConstructorCall; return(expr); } break; case FUNDTYPE.FT_VAR: break; } ExprZeroInit rval = new ExprZeroInit(); rval.Kind = ExpressionKind.EK_ZEROINIT; rval.Type = pType; rval.Flags = 0; rval.OptionalConstructorCall = pOptionalOriginalConstructorCall; rval.IsConstructor = isConstructor; if (bIsError) { rval.SetError(); } Debug.Assert(rval != null); return(rval); }