コード例 #1
0
        public override DynamicMetaObject Bind(DynamicMetaObject target, DynamicMetaObject[] args)
        {
            DynamicMetaObject obj2 = args[0];

            if (!target.HasValue || !obj2.HasValue)
            {
                return(base.Defer(target, new DynamicMetaObject[] { obj2 }).WriteToDebugLog(this));
            }
            Type instance = target.Value as Type;
            BindingRestrictions restrictions = BindingRestrictions.GetInstanceRestriction(target.Expression, instance).Merge(obj2.PSGetTypeRestriction());

            return(new DynamicMetaObject(Expression.Dynamic(PSConvertBinder.Get(instance), instance, obj2.Expression).Cast(typeof(object)), restrictions).WriteToDebugLog(this));
        }
コード例 #2
0
 internal static Expression Convert(this Expression expr, Type type)
 {
     if (expr.Type.Equals(type))
     {
         return(expr);
     }
     if (expr.Type.Equals(typeof(void)))
     {
         expr = ExpressionCache.NullConstant;
     }
     if (LanguagePrimitives.GetConversionRank(expr.Type, type) == ConversionRank.Assignable)
     {
         return(Expression.Convert(expr, type));
     }
     if (type.ContainsGenericParameters)
     {
         return(Expression.Call(CachedReflectionInfo.LanguagePrimitives_ThrowInvalidCastException, expr.Cast(typeof(object)), Expression.Constant(type)));
     }
     return(Expression.Dynamic(PSConvertBinder.Get(type), type, expr));
 }
コード例 #3
0
 public override DynamicMetaObject Bind(DynamicMetaObject target, DynamicMetaObject[] args)
 {
     if (!target.HasValue || !args[0].HasValue)
     {
         DynamicMetaObject[] dynamicMetaObjectArray = new DynamicMetaObject[2];
         dynamicMetaObjectArray[0] = args[0];
         dynamicMetaObjectArray[1] = args[1];
         return(base.Defer(target, dynamicMetaObjectArray).WriteToDebugLog(this));
     }
     else
     {
         BindingRestrictions bindingRestriction = target.PSGetTypeRestriction();
         if (target.Value as PSObject == null)
         {
             if (target.Value != null)
             {
                 if (target.Value as ScriptBlock == null)
                 {
                     Expression        expression        = args[1].Expression;
                     DynamicExpression dynamicExpression = Expression.Dynamic(PSToStringBinder.Get(), typeof(string), args[0].Expression, expression);
                     if (target.Value as Regex != null || (this._flags & SwitchFlags.Regex) != SwitchFlags.None)
                     {
                         MethodCallExpression methodCallExpression = Expression.Call(CachedReflectionInfo.SwitchOps_ConditionSatisfiedRegex, ExpressionCache.Constant((this._flags & SwitchFlags.CaseSensitive) != SwitchFlags.None), target.Expression.Cast(typeof(object)), ExpressionCache.NullExtent, dynamicExpression, expression);
                         return(new DynamicMetaObject(methodCallExpression, bindingRestriction).WriteToDebugLog(this));
                     }
                     else
                     {
                         if (target.Value as WildcardPattern != null || (this._flags & SwitchFlags.Wildcard) != SwitchFlags.None)
                         {
                             MethodCallExpression methodCallExpression1 = Expression.Call(CachedReflectionInfo.SwitchOps_ConditionSatisfiedWildcard, ExpressionCache.Constant((this._flags & SwitchFlags.CaseSensitive) != SwitchFlags.None), target.Expression.Cast(typeof(object)), dynamicExpression, expression);
                             return(new DynamicMetaObject(methodCallExpression1, bindingRestriction).WriteToDebugLog(this));
                         }
                         else
                         {
                             DynamicExpression dynamicExpression1 = Expression.Dynamic(PSToStringBinder.Get(), typeof(string), target.Expression, expression);
                             return(new DynamicMetaObject(Compiler.CallStringEquals(dynamicExpression1, dynamicExpression, (this._flags & SwitchFlags.CaseSensitive) == SwitchFlags.None), bindingRestriction).WriteToDebugLog(this));
                         }
                     }
                 }
                 else
                 {
                     Expression[] automationNullConstant = new Expression[6];
                     automationNullConstant[0] = ExpressionCache.Constant(true);
                     automationNullConstant[1] = Expression.Constant(ScriptBlock.ErrorHandlingBehavior.WriteToExternalErrorPipe);
                     automationNullConstant[2] = args[0].CastOrConvert(typeof(object));
                     automationNullConstant[3] = ExpressionCache.AutomationNullConstant;
                     automationNullConstant[4] = ExpressionCache.AutomationNullConstant;
                     automationNullConstant[5] = ExpressionCache.NullObjectArray;
                     MethodCallExpression methodCallExpression2 = Expression.Call(target.Expression.Cast(typeof(ScriptBlock)), CachedReflectionInfo.ScriptBlock_DoInvokeReturnAsIs, automationNullConstant);
                     return(new DynamicMetaObject(Expression.Dynamic(PSConvertBinder.Get(typeof(bool)), typeof(bool), methodCallExpression2), bindingRestriction).WriteToDebugLog(this));
                 }
             }
             else
             {
                 return(new DynamicMetaObject(Expression.Equal(args[0].Expression.Cast(typeof(object)), ExpressionCache.NullConstant), target.PSGetTypeRestriction()).WriteToDebugLog(this));
             }
         }
         else
         {
             return(new DynamicMetaObject(Expression.Dynamic(this, this.ReturnType, Expression.Call(CachedReflectionInfo.PSObject_Base, target.Expression.Cast(typeof(object))), args[0].Expression, args[1].Expression), bindingRestriction).WriteToDebugLog(this));
         }
     }
 }