internal override Expression VisitLambda(LambdaExpression lambda)
{
if (!this.topLevelProjectionFound || ((lambda.Parameters.Count == 1) && ClientTypeUtil.TypeOrElementTypeIsEntity(lambda.Parameters[0].Type)))
{
this.topLevelProjectionFound = true;
ParameterExpression expectedType = Expression.Parameter(typeof(Type), "type" + this.identifierId);
ParameterExpression entry = Expression.Parameter(typeof(object), "entry" + this.identifierId);
this.identifierId++;
this.pathBuilder.EnterLambdaScope(lambda, entry, expectedType);
ProjectionPath startPath = new ProjectionPath(lambda.Parameters[0], expectedType, entry);
ProjectionPathSegment item = new ProjectionPathSegment(startPath, null, null);
startPath.Add(item);
ExpressionAnnotation annotation = new ExpressionAnnotation {
Segment = item
};
this.annotations[lambda.Parameters[0]] = annotation;
Expression expression4 = this.Visit(lambda.Body);
if (expression4.Type.IsValueType)
{
expression4 = Expression.Convert(expression4, typeof(object));
}
Expression expression = Expression.Lambda <Func <object, object, Type, object> >(expression4, new ParameterExpression[] { this.materializerExpression, entry, expectedType });
this.pathBuilder.LeaveLambdaScope();
return(expression);
}
return(base.VisitLambda(lambda));
}
private Expression RebindParameter(Expression expression, ExpressionAnnotation annotation)
{
Debug.Assert(expression != null, "expression != null");
Debug.Assert(annotation != null, "annotation != null");
Expression result;
result = this.CallValueForPathWithType(
annotation.Segment.StartPath.RootEntry,
annotation.Segment.StartPath.ExpectedRootType,
annotation.Segment.StartPath,
expression.Type);
ProjectionPath parameterPath = new ProjectionPath(
annotation.Segment.StartPath.Root,
annotation.Segment.StartPath.ExpectedRootType,
annotation.Segment.StartPath.RootEntry);
ProjectionPathSegment parameterSegment = new ProjectionPathSegment(parameterPath, null, null);
parameterPath.Add(parameterSegment);
this.annotations[expression] = new ExpressionAnnotation()
{
Segment = parameterSegment
};
return(result);
}
private Expression RebindMemberAccess(MemberExpression m, ExpressionAnnotation baseAnnotation)
{
Debug.Assert(m != null, "m != null");
Debug.Assert(baseAnnotation != null, "baseAnnotation != null");
ProjectionPathSegment memberSegment;
Expression baseSourceExpression = m.Expression;
Expression result = this.pathBuilder.GetRewrite(baseSourceExpression);
if (result != null)
{
Expression baseTypeExpression = Expression.Constant(baseSourceExpression.Type, typeof(Type));
ProjectionPath nestedPath = new ProjectionPath(result as ParameterExpression, baseTypeExpression, result);
ProjectionPathSegment nestedSegment = new ProjectionPathSegment(nestedPath, m.Member.Name, m.Type);
nestedPath.Add(nestedSegment);
result = this.CallValueForPathWithType(result, baseTypeExpression, nestedPath, m.Type);
}
else
{
memberSegment = new ProjectionPathSegment(baseAnnotation.Segment.StartPath, m.Member.Name, m.Type);
baseAnnotation.Segment.StartPath.Add(memberSegment);
result = this.CallValueForPathWithType(
baseAnnotation.Segment.StartPath.RootEntry,
baseAnnotation.Segment.StartPath.ExpectedRootType,
baseAnnotation.Segment.StartPath,
m.Type);
}
return(result);
}
internal ProjectionPathSegment(ProjectionPath startPath, string member, Type projectionType)
{
Debug.Assert(startPath != null, "startPath != null");
this.Member = member;
this.StartPath = startPath;
this.ProjectionType = projectionType;
}
internal ProjectionPathSegment(ProjectionPath startPath, MemberExpression memberExpression)
{
this.StartPath = startPath;
Expression expression = ResourceBinder.StripTo <Expression>(memberExpression.Expression);
this.Member = memberExpression.Member.Name;
this.ProjectionType = memberExpression.Type;
this.SourceTypeAs = (expression.NodeType == ExpressionType.TypeAs) ? expression.Type : null;
}
private Expression CallValueForPath(Expression entry, Expression entryType, ProjectionPath path)
{
Expression key = CallMaterializer("ProjectionValueForPath", new Expression[] { this.materializerExpression, entry, entryType, Expression.Constant(path, typeof(object)) });
ExpressionAnnotation annotation = new ExpressionAnnotation {
Segment = path[path.Count - 1]
};
this.annotations.Add(key, annotation);
return(key);
}
/// <summary>Initializes a new <see cref="ProjectionPathSegment"/> instance.</summary>
/// <param name="startPath">Path on which this segment is located.</param>
/// <param name="memberExpression">Member expression for the projection path; possibly null.</param>
internal ProjectionPathSegment(ProjectionPath startPath, MemberExpression memberExpression)
{
Debug.Assert(startPath != null, "startPath != null");
Debug.Assert(memberExpression != null, "memberExpression != null");
this.StartPath = startPath;
Expression source = ResourceBinder.StripTo <Expression>(memberExpression.Expression);
this.Member = memberExpression.Member.Name;
this.ProjectionType = memberExpression.Type;
this.SourceTypeAs = source.NodeType == ExpressionType.TypeAs ? source.Type : null;
}
private Expression CallValueForPath(Expression entry, Expression entryType, ProjectionPath path)
{
Debug.Assert(entry != null, "entry != null");
Debug.Assert(path != null, "path != null");
Expression result = CallMaterializer("ProjectionValueForPath", this.materializerExpression, entry, entryType, Expression.Constant(path, typeof(object)));
this.annotations.Add(result, new ExpressionAnnotation()
{
Segment = path[path.Count - 1]
});
return(result);
}
private Expression RebindParameter(Expression expression, ExpressionAnnotation annotation)
{
Expression expression2 = this.CallValueForPathWithType(annotation.Segment.StartPath.RootEntry, annotation.Segment.StartPath.ExpectedRootType, annotation.Segment.StartPath, expression.Type);
ProjectionPath startPath = new ProjectionPath(annotation.Segment.StartPath.Root, annotation.Segment.StartPath.ExpectedRootType, annotation.Segment.StartPath.RootEntry);
ProjectionPathSegment item = new ProjectionPathSegment(startPath, null, null);
startPath.Add(item);
ExpressionAnnotation annotation2 = new ExpressionAnnotation {
Segment = item
};
this.annotations[expression] = annotation2;
return(expression2);
}
internal override Expression VisitLambda(LambdaExpression lambda)
{
Debug.Assert(lambda != null, "lambda != null");
Expression result;
if (!this.topLevelProjectionFound || lambda.Parameters.Count == 1 && ClientType.CheckElementTypeIsEntity(lambda.Parameters[0].Type))
{
this.topLevelProjectionFound = true;
ParameterExpression expectedTypeParameter = Expression.Parameter(typeof(Type), "type" + this.identifierId);
ParameterExpression entryParameter = Expression.Parameter(typeof(object), "entry" + this.identifierId);
this.identifierId++;
this.pathBuilder.EnterLambdaScope(lambda, entryParameter, expectedTypeParameter);
ProjectionPath parameterPath = new ProjectionPath(lambda.Parameters[0], expectedTypeParameter, entryParameter);
ProjectionPathSegment parameterSegment = new ProjectionPathSegment(parameterPath, null, null);
parameterPath.Add(parameterSegment);
this.annotations[lambda.Parameters[0]] = new ExpressionAnnotation()
{
Segment = parameterSegment
};
Expression body = this.Visit(lambda.Body);
if (body.Type.IsValueType)
{
body = Expression.Convert(body, typeof(object));
}
result = Expression.Lambda <Func <object, object, Type, object> >(
body,
this.materializerExpression,
entryParameter,
expectedTypeParameter);
this.pathBuilder.LeaveLambdaScope();
}
else
{
result = base.VisitLambda(lambda);
}
return(result);
}
private Expression RebindMemberAccess(MemberExpression m, ExpressionAnnotation baseAnnotation)
{
Expression expression = m.Expression;
Expression rewrite = this.pathBuilder.GetRewrite(expression);
if (rewrite != null)
{
Expression expectedRootType = Expression.Constant(expression.Type, typeof(Type));
ProjectionPath startPath = new ProjectionPath(rewrite as ParameterExpression, expectedRootType, rewrite);
ProjectionPathSegment segment2 = new ProjectionPathSegment(startPath, m);
startPath.Add(segment2);
return(this.CallValueForPathWithType(rewrite, expectedRootType, startPath, m.Type));
}
ProjectionPathSegment item = new ProjectionPathSegment(baseAnnotation.Segment.StartPath, m);
baseAnnotation.Segment.StartPath.Add(item);
return(this.CallValueForPathWithType(baseAnnotation.Segment.StartPath.RootEntry, baseAnnotation.Segment.StartPath.ExpectedRootType, baseAnnotation.Segment.StartPath, m.Type));
}
internal ProjectionPathSegment(ProjectionPath startPath, string member, Type projectionType)
{
this.Member = member;
this.StartPath = startPath;
this.ProjectionType = projectionType;
}
private Expression RebindEntityMemberInit(MemberInitExpression init)
{
Debug.Assert(init != null, "init != null");
Debug.Assert(init.Bindings.Count > 0, "init.Bindings.Count > 0 -- otherwise this is just empty construction");
Expression[] expressions;
if (!this.pathBuilder.HasRewrites)
{
MemberAssignmentAnalysis propertyAnalysis = MemberAssignmentAnalysis.Analyze(
this.pathBuilder.LambdaParameterInScope,
((MemberAssignment)init.Bindings[0]).Expression);
expressions = propertyAnalysis.GetExpressionsToTargetEntity();
Debug.Assert(expressions.Length != 0, "expressions.Length != 0 -- otherwise there is no correlation to parameter in entity member init");
}
else
{
expressions = MemberAssignmentAnalysis.EmptyExpressionArray;
}
Expression entryParameterAtMemberInit = this.pathBuilder.ParameterEntryInScope;
List <string> propertyNames = new List <string>();
List <Func <object, object, Type, object> > propertyFunctions = new List <Func <object, object, Type, object> >();
Type projectedType = init.NewExpression.Type;
Expression projectedTypeExpression = Expression.Constant(projectedType, typeof(Type));
Expression entryToInitValue; Expression expectedParamValue; ParameterExpression entryParameterForMembers; ParameterExpression expectedParameterForMembers; string[] expressionNames = expressions.Skip(1).Select(e => ((MemberExpression)e).Member.Name).ToArray();
if (expressions.Length <= 1)
{
entryToInitValue = this.pathBuilder.ParameterEntryInScope;
expectedParamValue = this.pathBuilder.ExpectedParamTypeInScope;
entryParameterForMembers = (ParameterExpression)this.pathBuilder.ParameterEntryInScope;
expectedParameterForMembers = (ParameterExpression)this.pathBuilder.ExpectedParamTypeInScope;
}
else
{
entryToInitValue = this.GetDeepestEntry(expressions);
expectedParamValue = projectedTypeExpression;
entryParameterForMembers = Expression.Parameter(typeof(object), "subentry" + this.identifierId++);
expectedParameterForMembers = (ParameterExpression)this.pathBuilder.ExpectedParamTypeInScope;
ProjectionPath entryPath = new ProjectionPath(
(ParameterExpression)this.pathBuilder.LambdaParameterInScope,
this.pathBuilder.ExpectedParamTypeInScope,
this.pathBuilder.ParameterEntryInScope,
expressions.Skip(1));
this.annotations.Add(entryToInitValue, new ExpressionAnnotation()
{
Segment = entryPath[entryPath.Count - 1]
});
this.annotations.Add(entryParameterForMembers, new ExpressionAnnotation()
{
Segment = entryPath[entryPath.Count - 1]
});
this.pathBuilder.RegisterRewrite(this.pathBuilder.LambdaParameterInScope, expressionNames, entryParameterForMembers);
}
for (int i = 0; i < init.Bindings.Count; i++)
{
MemberAssignment assignment = (MemberAssignment)init.Bindings[i];
propertyNames.Add(assignment.Member.Name);
LambdaExpression propertyLambda;
if ((ClientType.CheckElementTypeIsEntity(assignment.Member.ReflectedType) &&
assignment.Expression.NodeType == ExpressionType.MemberInit))
{
Expression nestedEntry = CallMaterializer(
"ProjectionGetEntry",
entryParameterAtMemberInit,
Expression.Constant(assignment.Member.Name, typeof(string)));
ParameterExpression nestedEntryParameter = Expression.Parameter(
typeof(object),
"subentry" + this.identifierId++);
ProjectionPath entryPath;
ExpressionAnnotation entryAnnotation;
if (this.annotations.TryGetValue(this.pathBuilder.ParameterEntryInScope, out entryAnnotation))
{
entryPath = new ProjectionPath(
(ParameterExpression)this.pathBuilder.LambdaParameterInScope,
this.pathBuilder.ExpectedParamTypeInScope,
entryParameterAtMemberInit);
entryPath.AddRange(entryAnnotation.Segment.StartPath);
}
else
{
entryPath = new ProjectionPath(
(ParameterExpression)this.pathBuilder.LambdaParameterInScope,
this.pathBuilder.ExpectedParamTypeInScope,
entryParameterAtMemberInit,
expressions.Skip(1));
}
ProjectionPathSegment nestedSegment = new ProjectionPathSegment(
entryPath,
assignment.Member.Name,
assignment.Member.ReflectedType);
entryPath.Add(nestedSegment);
string[] names = (entryPath.Where(m => m.Member != null).Select(m => m.Member)).ToArray();
this.annotations.Add(nestedEntryParameter, new ExpressionAnnotation()
{
Segment = nestedSegment
});
this.pathBuilder.RegisterRewrite(this.pathBuilder.LambdaParameterInScope, names, nestedEntryParameter);
Expression e = this.Visit(assignment.Expression);
this.pathBuilder.RevokeRewrite(this.pathBuilder.LambdaParameterInScope, names);
this.annotations.Remove(nestedEntryParameter);
e = Expression.Convert(e, typeof(object));
ParameterExpression[] parameters =
new ParameterExpression[]
{
this.materializerExpression,
nestedEntryParameter,
expectedParameterForMembers,
};
propertyLambda = Expression.Lambda(e, parameters);
Expression[] nestedParams =
new Expression[]
{
this.materializerExpression,
nestedEntry,
expectedParameterForMembers,
};
var invokeParameters =
new ParameterExpression[]
{
this.materializerExpression,
(ParameterExpression)entryParameterAtMemberInit,
expectedParameterForMembers,
};
propertyLambda = Expression.Lambda(Expression.Invoke(propertyLambda, nestedParams), invokeParameters);
}
else
{
Expression e = this.Visit(assignment.Expression);
e = Expression.Convert(e, typeof(object));
ParameterExpression[] parameters =
new ParameterExpression[]
{
this.materializerExpression,
entryParameterForMembers,
expectedParameterForMembers,
};
propertyLambda = Expression.Lambda(e, parameters);
}
#if TRACE_CLIENT_PROJECTIONS
Trace.WriteLine("Compiling lambda for " + assignment.Member.Name + ": " + propertyLambda);
#endif
propertyFunctions.Add((Func <object, object, Type, object>)propertyLambda.Compile());
}
for (int i = 1; i < expressions.Length; i++)
{
this.pathBuilder.RevokeRewrite(this.pathBuilder.LambdaParameterInScope, expressionNames);
this.annotations.Remove(entryToInitValue);
this.annotations.Remove(entryParameterForMembers);
}
Expression reboundExpression = CallMaterializer(
"ProjectionInitializeEntity",
this.materializerExpression,
entryToInitValue,
expectedParamValue,
projectedTypeExpression,
Expression.Constant(propertyNames.ToArray()),
Expression.Constant(propertyFunctions.ToArray()));
return(Expression.Convert(reboundExpression, projectedType));
}
private Expression CallValueForPathWithType(Expression entry, Expression entryType, ProjectionPath path, Type type)
{
Debug.Assert(entry != null, "entry != null");
Debug.Assert(path != null, "path != null");
Expression value = this.CallValueForPath(entry, entryType, path);
Expression result = Expression.Convert(value, type);
this.annotations.Add(result, new ExpressionAnnotation()
{
Segment = path[path.Count - 1]
});
return(result);
}
private Expression CallCheckValueForPathIsNull(Expression entry, Expression entryType, ProjectionPath path)
{
Expression result = CallMaterializer("ProjectionCheckValueForPathIsNull", entry, entryType, Expression.Constant(path, typeof(object)));
this.annotations.Add(result, new ExpressionAnnotation()
{
Segment = path[path.Count - 1]
});
return(result);
}
private Expression RebindEntityMemberInit(MemberInitExpression init)
{
Expression[] expressionsToTargetEntity;
Expression deepestEntry;
Expression expectedParamTypeInScope;
ParameterExpression expression5;
ParameterExpression expression6;
if (!this.pathBuilder.HasRewrites)
{
expressionsToTargetEntity = MemberAssignmentAnalysis.Analyze(this.pathBuilder.LambdaParameterInScope, ((MemberAssignment)init.Bindings[0]).Expression).GetExpressionsToTargetEntity();
}
else
{
expressionsToTargetEntity = MemberAssignmentAnalysis.EmptyExpressionArray;
}
Expression parameterEntryInScope = this.pathBuilder.ParameterEntryInScope;
List <string> list = new List <string>();
List <Func <object, object, Type, object> > list2 = new List <Func <object, object, Type, object> >();
Type type = init.NewExpression.Type;
Expression expression2 = Expression.Constant(type, typeof(Type));
string[] names = (from e in expressionsToTargetEntity.Skip <Expression>(1) select((MemberExpression)e).Member.Name).ToArray <string>();
if (expressionsToTargetEntity.Length <= 1)
{
deepestEntry = this.pathBuilder.ParameterEntryInScope;
expectedParamTypeInScope = this.pathBuilder.ExpectedParamTypeInScope;
expression5 = (ParameterExpression)this.pathBuilder.ParameterEntryInScope;
expression6 = (ParameterExpression)this.pathBuilder.ExpectedParamTypeInScope;
}
else
{
deepestEntry = this.GetDeepestEntry(expressionsToTargetEntity);
expectedParamTypeInScope = expression2;
expression5 = Expression.Parameter(typeof(object), "subentry" + this.identifierId++);
expression6 = (ParameterExpression)this.pathBuilder.ExpectedParamTypeInScope;
ProjectionPath path = new ProjectionPath((ParameterExpression)this.pathBuilder.LambdaParameterInScope, this.pathBuilder.ExpectedParamTypeInScope, this.pathBuilder.ParameterEntryInScope, expressionsToTargetEntity.Skip <Expression>(1));
ExpressionAnnotation annotation = new ExpressionAnnotation {
Segment = path[path.Count - 1]
};
this.annotations.Add(deepestEntry, annotation);
ExpressionAnnotation annotation2 = new ExpressionAnnotation {
Segment = path[path.Count - 1]
};
this.annotations.Add(expression5, annotation2);
this.pathBuilder.RegisterRewrite(this.pathBuilder.LambdaParameterInScope, names, expression5);
}
for (int i = 0; i < init.Bindings.Count; i++)
{
LambdaExpression expression7;
MemberAssignment assignment = (MemberAssignment)init.Bindings[i];
list.Add(assignment.Member.Name);
if (ClientTypeUtil.TypeOrElementTypeIsEntity(ClientTypeUtil.GetMemberType(assignment.Member)) && (assignment.Expression.NodeType == ExpressionType.MemberInit))
{
ProjectionPath path2;
ExpressionAnnotation annotation3;
Expression expression8 = CallMaterializer("ProjectionGetEntry", new Expression[] { parameterEntryInScope, Expression.Constant(assignment.Member.Name, typeof(string)) });
ParameterExpression key = Expression.Parameter(typeof(object), "subentry" + this.identifierId++);
if (this.annotations.TryGetValue(this.pathBuilder.ParameterEntryInScope, out annotation3))
{
path2 = new ProjectionPath((ParameterExpression)this.pathBuilder.LambdaParameterInScope, this.pathBuilder.ExpectedParamTypeInScope, parameterEntryInScope);
path2.AddRange(annotation3.Segment.StartPath);
}
else
{
path2 = new ProjectionPath((ParameterExpression)this.pathBuilder.LambdaParameterInScope, this.pathBuilder.ExpectedParamTypeInScope, parameterEntryInScope, expressionsToTargetEntity.Skip <Expression>(1));
}
Type reflectedType = assignment.Member.ReflectedType;
ProjectionPathSegment item = new ProjectionPathSegment(path2, assignment.Member.Name, reflectedType);
path2.Add(item);
string[] strArray2 = (from m in path2
where m.Member != null
select m.Member).ToArray <string>();
ExpressionAnnotation annotation4 = new ExpressionAnnotation {
Segment = item
};
this.annotations.Add(key, annotation4);
this.pathBuilder.RegisterRewrite(this.pathBuilder.LambdaParameterInScope, strArray2, key);
Expression expression = this.Visit(assignment.Expression);
this.pathBuilder.RevokeRewrite(this.pathBuilder.LambdaParameterInScope, strArray2);
this.annotations.Remove(key);
expression = Expression.Convert(expression, typeof(object));
ParameterExpression[] parameters = new ParameterExpression[] { this.materializerExpression, key, expression6 };
expression7 = Expression.Lambda(expression, parameters);
Expression[] arguments = new Expression[] { this.materializerExpression, expression8, expression6 };
ParameterExpression[] expressionArray4 = new ParameterExpression[] { this.materializerExpression, (ParameterExpression)parameterEntryInScope, expression6 };
expression7 = Expression.Lambda(Expression.Invoke(expression7, arguments), expressionArray4);
}
else
{
Expression body = Expression.Convert(this.Visit(assignment.Expression), typeof(object));
ParameterExpression[] expressionArray5 = new ParameterExpression[] { this.materializerExpression, expression5, expression6 };
expression7 = Expression.Lambda(body, expressionArray5);
}
list2.Add((Func <object, object, Type, object>)expression7.Compile());
}
for (int j = 1; j < expressionsToTargetEntity.Length; j++)
{
this.pathBuilder.RevokeRewrite(this.pathBuilder.LambdaParameterInScope, names);
this.annotations.Remove(deepestEntry);
this.annotations.Remove(expression5);
}
return(Expression.Convert(CallMaterializer("ProjectionInitializeEntity", new Expression[] { this.materializerExpression, deepestEntry, expectedParamTypeInScope, expression2, Expression.Constant(list.ToArray()), Expression.Constant(list2.ToArray()) }), type));
}
private Expression CallValueForPathWithType(Expression entry, Expression entryType, ProjectionPath path, Type type)
{
Expression key = Expression.Convert(this.CallValueForPath(entry, entryType, path), type);
ExpressionAnnotation annotation = new ExpressionAnnotation {
Segment = path[path.Count - 1]
};
this.annotations.Add(key, annotation);
return(key);
}
