public override void OnMemberReferenceExpression(MemberReferenceExpression node)
{
Write("MemberReferenceExpression(");
BeginNode();
WriteIndented("Target: "); Visit(node.Target); Write(", "); WriteLine();
WriteIndented("Name: "); WriteString(node.Name);
EndNode();
}
B.ReferenceExpression MakeReferenceExpression(string fullName)
{
string[] parts = fullName.Split('.');
B.ReferenceExpression r = new B.ReferenceExpression(lastLexicalInfo, parts[0]);
for (int i = 1; i < parts.Length; i++)
r = new B.MemberReferenceExpression(lastLexicalInfo, r, parts[i]);
return r;
}
private Expression FixCondition(Expression condition)
{
if (IsTryGetParameterInvocation(condition) == false)
return condition;
var isNull =
new MemberReferenceExpression(condition, "_IsIgnoreNullReferencingNotNullObject_");
return isNull;
}
public override void WrapStatementsInBlockIfNeeded(MemberReferenceExpression node, IUpdateCollector<LexicalInfo> updateCollector)
{
if (!this.IsInsideBlock(node))
{
Statement statement = BooExtensions.FindRootStatement(node);
updateCollector.Insert(BooExtensions.SourcePosition(BooExtensions.FindExpressionRoot(statement)), "{ ", node.get_LexicalInfo(), null).InclusiveRange = false;
updateCollector.Insert(new SourcePosition(statement.get_EndSourceLocation().get_Line(), statement.get_EndSourceLocation().get_Column() + 1), " }", node.get_LexicalInfo(), null);
}
}
/// <summary>
/// Called when we encounters a member reference expression
/// </summary>
/// <param name="node">The node.</param>
public override void OnMemberReferenceExpression(MemberReferenceExpression node)
{
if (this.ShouldTransformNodeName(node))
{
this.TransformNodeName(node);
}
base.OnMemberReferenceExpression(node);
}
public override void OnReferenceExpression(ReferenceExpression node) {
if (node.Name[0] == '_')
{
var result = new MemberReferenceExpression(node.LexicalInfo);
result.Name = node.Name.Substring(1);
result.Target = instance.CloneNode();
ReplaceCurrentNode(result);
}
}
B.ReferenceExpression MakeReferenceExpression(string fullName)
{
string[] parts = fullName.Split('.');
B.ReferenceExpression r = new B.ReferenceExpression(lastLexicalInfo, parts[0]);
for (int i = 1; i < parts.Length; i++)
{
r = new B.MemberReferenceExpression(lastLexicalInfo, r, parts[i]);
}
return(r);
}
override public void OnMemberReferenceExpression(MemberReferenceExpression node)
{
var tern = ProcessTargets(node);
if (tern != null)
{
ReplaceCurrentNode(tern);
return;
}
base.OnMemberReferenceExpression(node);
}
public override void OnMemberReferenceExpression(MemberReferenceExpression node)
{
if (LookingFor(node))
{
Found(node);
}
else
{
base.OnMemberReferenceExpression(node);
}
}
public override void OnMemberReferenceExpression(MemberReferenceExpression node)
{
var name = node.ToString();
if (name.StartsWith("@"))
{
ReplaceWithComponentReference(node, name);
return;
}
base.OnMemberReferenceExpression(node);
}
public static ReferenceExpression CreateReferenceExpression(string fullname)
{
string[] parts = fullname.Split('.');
ReferenceExpression expression = new ReferenceExpression(parts[0]);
expression.IsSynthetic = true;
for (int i=1; i<parts.Length; ++i)
{
expression = new MemberReferenceExpression(expression, parts[i]);
expression.IsSynthetic = true;
}
return expression;
}
protected override Statement ExpandImpl(MacroStatement macro){
if (macro.Arguments.Count == 0)
{
Context.Errors.Add(new CompilerError(macro.LexicalInfo,
"call macro requires at least one reference or string attribute for action name"));
}
var basis = new ReferenceExpression("Html");
var method = new MemberReferenceExpression(basis, "RenderAction");
var call = new MethodInvocationExpression(method);
int i = 0;
var result = new Block();
foreach (Expression argument in macro.Arguments){
i++;
Expression exp = argument;
if (!(exp is HashLiteralExpression)){
//action and contrller parameters
if (!(exp is NullLiteralExpression)){
exp = new StringLiteralExpression(argument.ToCodeString());
}
call.Arguments.Add(exp);
}
else{
string name = "__rd";
result.Add(
new DeclarationStatement(
new Declaration(name, null),
new MethodInvocationExpression(AstUtil.CreateReferenceExpression("RouteValueDictionary"))
)
);
var dict = argument as HashLiteralExpression;
foreach (ExpressionPair item in dict.Items){
result.Add(
new MethodInvocationExpression(
AstUtil.CreateReferenceExpression(name + ".Add"),
item.First,
item.Second
)
);
}
if (i == 2){
call.Arguments.Add(new NullLiteralExpression());
}
call.Arguments.Add(AstUtil.CreateReferenceExpression(name));
}
}
result.Add(call);
return result;
}
public override void LeaveMemberReferenceExpression(MemberReferenceExpression node)
{
var property = node.Entity as IProperty;
if (property == null || node.IsTargetOfAssignment())
return;
var getter = CodeBuilder.CreatePropertyGet(node.Target, property);
// preserve duck typing...
if (property.IsDuckTyped)
ReplaceCurrentNode(
CodeBuilder.CreateCast(
TypeSystemServices.DuckType, getter));
else
ReplaceCurrentNode(getter);
}
private Expression FixCondition(Expression condition){
if (IsTryGetParameterInvocation(condition) == false){
return condition;
}
string name = ((ReferenceExpression) condition).Name.Substring(1);
condition = new MethodInvocationExpression(
new MemberReferenceExpression(new SuperLiteralExpression(), "TryGetParameter"),
new StringLiteralExpression(name)
);
var isNull =
new MemberReferenceExpression(condition, "_IsIgnoreNullReferencingNotNullObject_");
return isNull;
}
public override void OnMemberReferenceExpression(MemberReferenceExpression node)
{
ReferenceExpression reference = node.Target as ReferenceExpression;
if (reference != null && reference.Name.StartsWith("@"))
{
_component = reference;
}
else
{
_component = AstUtil.CreateMethodInvocationExpression(
AstUtil.CreateReferenceExpression(typeof(ComponentReference).FullName),
node.Target
);
}
_method = new StringLiteralExpression(node.Name);
_found = true;
}
protected override void AddResolvedNamedArgumentToEval(MethodInvocationExpression eval, ExpressionPair pair, ReferenceExpression instance)
{
if (!TypeSystemServices.IsQuackBuiltin(pair.First))
{
base.AddResolvedNamedArgumentToEval(eval, pair, instance);
return;
}
MemberReferenceExpression memberRef = new MemberReferenceExpression(
pair.First.LexicalInfo,
instance.CloneNode(),
((ReferenceExpression)pair.First).Name);
BindQuack(memberRef);
eval.Arguments.Add(
CodeBuilder.CreateAssignment(
pair.First.LexicalInfo,
memberRef,
pair.Second));
}
public override void LeaveMemberReferenceExpression(MemberReferenceExpression node)
{
if (null == node.Entity) return;
if (EntityType.Property != node.Entity.EntityType) return;
if (AstUtil.IsLhsOfAssignment(node)) return;
var property = (IProperty) node.Entity;
MethodInvocationExpression getter = CodeBuilder.CreatePropertyGet(node.Target, property);
// preserve duck typing...
if (property.IsDuckTyped)
{
ReplaceCurrentNode(
CodeBuilder.CreateCast(
TypeSystemServices.DuckType, getter));
}
else
{
ReplaceCurrentNode(getter);
}
}
public MemberReferenceExpression MemberReferenceForEntity(Expression target, IEntity entity)
{
MemberReferenceExpression reference = new MemberReferenceExpression(target.LexicalInfo);
reference.Target = target;
reference.Name = entity.Name;
reference.Entity = entity;
return reference;
}
private IEntity TryToResolveMemberAsExtension(MemberReferenceExpression node)
{
IEntity extension = NameResolutionService.ResolveExtension(GetReferenceNamespace(node), node.Name);
if (null != extension)
node.Annotate(ResolvedAsExtensionAnnotation);
return extension;
}
IEntity ResolveMember(MemberReferenceExpression node)
{
var entity = node.Entity;
if (!ShouldRebindMember(entity))
return entity;
var ns = GetReferenceNamespace(node);
var member = NameResolutionService.Resolve(ns, node.Name);
if (null == member || !IsAccessible(member) || !IsApplicable(member, node))
{
var extension = TryToResolveMemberAsExtension(node);
if (null != extension)
return extension;
}
if (null != member)
return Disambiguate(node, member);
MemberNotFound(node, ns);
return null;
}
void ProcessLenInvocation(MethodInvocationExpression node)
{
if ((node.Arguments.Count < 1) || (node.Arguments.Count > 2))
{
Error(node, CompilerErrorFactory.MethodArgumentCount(node.Target, "len", node.Arguments.Count));
return;
}
Expression resultingNode = null;
Expression target = node.Arguments[0];
IType type = GetExpressionType(target);
bool isArray = IsAssignableFrom(TypeSystemServices.ArrayType, type);
if ((!isArray) && (node.Arguments.Count != 1))
{
Error(node, CompilerErrorFactory.MethodArgumentCount(node.Target, "len", node.Arguments.Count));
}
if (TypeSystemServices.IsSystemObject(type))
{
resultingNode = CodeBuilder.CreateMethodInvocation(MethodCache.RuntimeServices_Len, target);
}
else if (TypeSystemServices.StringType == type)
{
resultingNode = CodeBuilder.CreateMethodInvocation(target, MethodCache.String_get_Length);
}
else if (isArray)
{
if (node.Arguments.Count == 1)
resultingNode = CodeBuilder.CreateMethodInvocation(target, MethodCache.Array_get_Length);
else
resultingNode = CodeBuilder.CreateMethodInvocation(target, MethodCache.Array_GetLength, node.Arguments[1]);
}
else if (IsAssignableFrom(TypeSystemServices.ICollectionType, type))
{
resultingNode = CodeBuilder.CreateMethodInvocation(target, MethodCache.ICollection_get_Count);
}
else if (GenericsServices.HasConstructedType(type, TypeSystemServices.ICollectionGenericType))
{
resultingNode = new MemberReferenceExpression(node.LexicalInfo, target, "Count");
Visit(resultingNode);
}
else
{
Error(CompilerErrorFactory.InvalidLen(target, type));
}
if (null != resultingNode)
{
node.ParentNode.Replace(node, resultingNode);
}
}
private void MarkRelatedImportAsUsed(MemberReferenceExpression node)
{
string ns = null;
foreach (var import in _currentModule.Imports)
{
if (ImportAnnotations.IsUsedImport(import)) continue;
if (null == ns) ns = node.ToCodeString();
if (import.Namespace == ns)
{
ImportAnnotations.MarkAsUsed(import);
break;
}
}
}
private bool IsBeingAssignedTo(MemberReferenceExpression node)
{
Node current = node;
Node parent = current.ParentNode;
BinaryExpression be = parent as BinaryExpression;
while (null == be)
{
current = parent;
parent = parent.ParentNode;
if (parent == null || !(parent is Expression))
return false;
be = parent as BinaryExpression;
}
return be.Left == current;
}
private bool IsApplicable(IEntity entity, MemberReferenceExpression node)
{
//ProcessLenInvocation - Visit(resultingNode), call for node without parent
if (node == null || node.ParentNode == null)
return true;
if (AstUtil.IsTargetOfMethodInvocation(node)
&& !IsCallableEntity(entity))
return false;
return true;
}
public override void LeaveReturnStatement(ReturnStatement node)
{
if (null == node.Expression)
return;
// forces anonymous types to be correctly
// instantiated
IType expressionType = GetConcreteExpressionType(node.Expression);
if (TypeSystemServices.VoidType == expressionType
&& node.ContainsAnnotation(OptionalReturnStatementAnnotation))
{
node.ParentNode.Replace(
node,
new ExpressionStatement(node.Expression));
return;
}
IType returnType = _currentMethod.ReturnType;
if (TypeSystemServices.IsUnknown(returnType))
_currentMethod.AddReturnExpression(node.Expression);
else
AssertTypeCompatibility(node.Expression, returnType, expressionType);
//bind to nullable Value if needed
if (TypeSystemServices.IsNullable(expressionType) && !TypeSystemServices.IsNullable(returnType))
{
// TODO: move to later steps or introduce an implicit conversion operator
var mre = new MemberReferenceExpression(node.Expression.LexicalInfo, node.Expression, "Value");
Visit(mre);
node.Replace(node.Expression, mre);
}
}
INamespace GetReferenceNamespace(MemberReferenceExpression expression)
{
Expression target = expression.Target;
INamespace ns = target.ExpressionType;
if (null != ns)
{
return GetConcreteExpressionType(target);
}
return (INamespace)GetEntity(target);
}
public override void LeaveMemberReferenceExpression(MemberReferenceExpression node)
{
_context.TraceVerbose("LeaveMemberReferenceExpression: {0}", node);
if (TypeSystemServices.IsError(node.Target))
Error(node);
else
ProcessMemberReferenceExpression(node);
}
bool BindNullableOperation(BinaryExpression node)
{
if (!IsNullableOperation(node))
return false;
if (BinaryOperatorType.ReferenceEquality == node.Operator)
{
node.Operator = BinaryOperatorType.Equality;
return BindNullableComparison(node);
}
else if (BinaryOperatorType.ReferenceInequality == node.Operator)
{
node.Operator = BinaryOperatorType.Inequality;
return BindNullableComparison(node);
}
IType lhs = GetExpressionType(node.Left);
IType rhs = GetExpressionType(node.Right);
bool lhsIsNullable = TypeSystemServices.IsNullable(lhs);
bool rhsIsNullable = TypeSystemServices.IsNullable(rhs);
if (BinaryOperatorType.Assign == node.Operator)
{
if (lhsIsNullable)
{
if (rhsIsNullable)
return false;
BindNullableInitializer(node, node.Right, lhs);
return false;
}
}
if (lhsIsNullable)
{
MemberReferenceExpression mre = new MemberReferenceExpression(node.Left, "Value");
node.Replace(node.Left, mre);
Visit(mre);
mre.Annotate("nullableTarget", true);
}
if (rhsIsNullable)
{
MemberReferenceExpression mre = new MemberReferenceExpression(node.Right, "Value");
node.Replace(node.Right, mre);
Visit(mre);
mre.Annotate("nullableTarget", true);
}
return false;
}
bool BindNullableComparison(BinaryExpression node)
{
if (!IsNullableOperation(node))
return false;
if (IsNull(node.Left) || IsNull(node.Right))
{
Expression nullable = IsNull(node.Left) ? node.Right : node.Left;
Expression val = new MemberReferenceExpression(nullable, "HasValue");
node.Replace(node.Left, val);
Visit(val);
Expression nil = new BoolLiteralExpression(false);
node.Replace(node.Right, nil);
Visit(nil);
BindExpressionType(node, TypeSystemServices.BoolType);
return true;
}
BinaryExpression valueCheck = new BinaryExpression(
(node.Operator == BinaryOperatorType.Inequality)
? BinaryOperatorType.BitwiseOr
: BinaryOperatorType.BitwiseAnd,
new BinaryExpression(
GetCorrespondingHasValueOperator(node.Operator),
CreateNullableHasValueOrTrueExpression(node.Left),
CreateNullableHasValueOrTrueExpression(node.Right)
),
new BinaryExpression(
node.Operator,
CreateNullableGetValueOrDefaultExpression(node.Left),
CreateNullableGetValueOrDefaultExpression(node.Right)
)
);
node.ParentNode.Replace(node, valueCheck);
Visit(valueCheck);
return true;
}
public override bool EnterMemberReferenceExpression(MemberReferenceExpression node)
{
return null == node.ExpressionType;
}
protected virtual void ProcessMemberReferenceExpression(MemberReferenceExpression node)
{
var entity = ResolveMember(node);
if (null == entity)
return;
EnsureRelatedNodeWasVisited(node, entity);
if (EntityType.Namespace == entity.EntityType)
MarkRelatedImportAsUsed(node);
var member = entity as IMember;
if (member != null)
{
if (!AssertTargetContext(node, member))
{
Error(node);
return;
}
if (EntityType.Method != member.EntityType)
BindExpressionType(node, GetInferredType(member));
else
BindExpressionType(node, member.Type);
}
// TODO: check for generic methods with no generic args here
if (EntityType.Property == entity.EntityType)
{
IProperty property = (IProperty)entity;
if (property.IsIndexedProperty())
{
if (!AstUtil.IsTargetOfSlicing(node)
&& (!property.IsExtension || property.GetParameters().Length > 1))
{
Error(node, CompilerErrorFactory.PropertyRequiresParameters(MemberAnchorFor(node), entity));
return;
}
}
if (IsWriteOnlyProperty(property) && !IsBeingAssignedTo(node))
{
Error(node, CompilerErrorFactory.PropertyIsWriteOnly(MemberAnchorFor(node), entity));
}
}
else if (EntityType.Event == entity.EntityType)
{
if (!AstUtil.IsTargetOfMethodInvocation(node) &&
!AstUtil.IsLhsOfInPlaceAddSubtract(node))
{
if (CurrentType == member.DeclaringType)
{
InternalEvent ev = (InternalEvent)entity;
node.Name = ev.BackingField.Name;
node.Entity = ev.BackingField;
BindExpressionType(node, ev.BackingField.Type);
return;
}
else if (!node.IsTargetOfAssignment()
|| !IsNull(((BinaryExpression)node.ParentNode).Right))
{
Error(node, CompilerErrorFactory.EventIsNotAnExpression(node, entity));
}
else //event=null
{
EnsureInternalEventInvocation((IEvent) entity, node);
}
}
}
Bind(node, entity);
PostProcessReferenceExpression(node);
}