public AstType ConvertNamespace(string namespaceName)
{
if (resolver != null) {
// Look if there's an alias to the target namespace
if (UseAliases) {
for (ResolvedUsingScope usingScope = resolver.CurrentUsingScope; usingScope != null; usingScope = usingScope.Parent) {
foreach (var pair in usingScope.UsingAliases) {
NamespaceResolveResult nrr = pair.Value as NamespaceResolveResult;
if (nrr != null && nrr.NamespaceName == namespaceName)
return new SimpleType(pair.Key);
}
}
}
}
int pos = namespaceName.LastIndexOf('.');
if (pos < 0) {
if (IsValidNamespace(namespaceName)) {
return new SimpleType(namespaceName);
} else {
return new MemberType {
Target = new SimpleType("global"),
IsDoubleColon = true,
MemberName = namespaceName
};
}
} else {
string parentNamespace = namespaceName.Substring(0, pos);
string localNamespace = namespaceName.Substring(pos + 1);
return new MemberType {
Target = ConvertNamespace(parentNamespace),
MemberName = localNamespace
};
}
}
Expression LookInUsingScopeNamespace(ResolveContext rc, ResolvedUsingScope usingScope, INamespace n, string identifier, IList <IType> typeArguments, bool parameterizeResultType)
{
if (n == null)
{
return(null);
}
// first look for a namespace
int k = typeArguments.Count;
if (k == 0)
{
INamespace childNamespace = n.GetChildNamespace(identifier);
if (childNamespace != null)
{
if (usingScope != null && usingScope.HasAlias(identifier))
{
rc.Report.Error(7, loc, "The name `{0}' is ambigious", name);
return(new TypeExpression((IType) new UnknownTypeSpec(null, identifier), Location)); // ambigious
}
return(new AliasNamespace(childNamespace, Location));
}
}
// then look for a type
ITypeDefinition def = n.GetTypeDefinition(identifier, k);
if (def != null)
{
IType result = def;
if (parameterizeResultType && k > 0)
{
result = new ParameterizedTypeSpec(def, typeArguments);
}
if (usingScope != null && usingScope.HasAlias(identifier))
{
rc.Report.Error(7, loc, "The name `{0}' is ambigious", name);
return(new TypeExpression((IType) new UnknownTypeSpec(null, identifier), Location)); // ambigious
}
else
{
return(new TypeExpression(result, Location));
}
}
return(null);
}
public override Expression Resolve(ResolveContext resolver)
{
// resolved cache
if (_resolved)
{
return(this);
}
if (name == "global")
{
_resolved = true;
ns = resolver.compilation.RootNamespace;
return(this);
}
for (ResolvedUsingScope n = resolver.CurrentUsingScope; n != null; n = n.Parent)
{
if (n.ExternAliases.Contains(name))
{
return(ResolveExternAlias(resolver, name));
}
foreach (var pair in n.UsingAliases)
{
if (pair.Key == name)
{
if (pair.Value is AliasNamespace)
{
return(pair.Value);
}
else
{
resolver.Report.Error(6, loc, "The name `{0}' does not exist in the current context", name);
return(ErrorResult);
}
}
}
}
resolver.Report.Error(6, loc, "The name `{0}' does not exist in the current context", name);
return(ErrorResult);
}
/// <summary>
/// Looks up an alias (identifier in front of :: operator)
/// </summary>
public Expression ResolveAlias(ResolveContext rc, string identifier)
{
if (identifier == "global")
{
return(new AliasNamespace(rc.compilation.RootNamespace, Location));
}
for (ResolvedUsingScope n = rc.CurrentUsingScope; n != null; n = n.Parent)
{
if (n.ExternAliases.Contains(identifier))
{
return(ResolveExternAlias(rc, identifier));
}
foreach (var pair in n.UsingAliases)
{
if (pair.Key == identifier)
{
return((Expression)(pair.Value as AliasNamespace) ?? ErrorResult);
}
}
}
return(ErrorResult);
}
AstType ConvertTypeHelper(ITypeDefinition typeDef, IList <IType> typeArguments)
{
Debug.Assert(typeArguments.Count >= typeDef.TypeParameterCount);
string keyword = KnownTypeReference.GetCSharpNameByTypeCode(typeDef.KnownTypeCode);
if (keyword != null)
{
return(new PrimitiveType(keyword));
}
// The number of type parameters belonging to outer classes
int outerTypeParameterCount;
if (typeDef.DeclaringType != null)
{
outerTypeParameterCount = typeDef.DeclaringType.TypeParameterCount;
}
else
{
outerTypeParameterCount = 0;
}
if (resolver != null)
{
// Look if there's an alias to the target type
if (UseAliases)
{
for (ResolvedUsingScope usingScope = resolver.CurrentUsingScope; usingScope != null; usingScope = usingScope.Parent)
{
foreach (var pair in usingScope.UsingAliases)
{
if (pair.Value is TypeResolveResult)
{
if (TypeMatches(pair.Value.Type, typeDef, typeArguments))
{
return(new SimpleType(pair.Key));
}
}
}
}
}
IList <IType> localTypeArguments;
if (typeDef.TypeParameterCount > outerTypeParameterCount)
{
localTypeArguments = new IType[typeDef.TypeParameterCount - outerTypeParameterCount];
for (int i = 0; i < localTypeArguments.Count; i++)
{
localTypeArguments[i] = typeArguments[outerTypeParameterCount + i];
}
}
else
{
localTypeArguments = EmptyList <IType> .Instance;
}
ResolveResult rr = resolver.ResolveSimpleName(typeDef.Name, localTypeArguments);
TypeResolveResult trr = rr as TypeResolveResult;
if (trr != null || (localTypeArguments.Count == 0 && resolver.IsVariableReferenceWithSameType(rr, typeDef.Name, out trr)))
{
if (!trr.IsError && TypeMatches(trr.Type, typeDef, typeArguments))
{
// We can use the short type name
SimpleType shortResult = new SimpleType(typeDef.Name);
AddTypeArguments(shortResult, typeDef, typeArguments, outerTypeParameterCount, typeDef.TypeParameterCount);
return(shortResult);
}
}
}
if (AlwaysUseShortTypeNames)
{
var shortResult = new SimpleType(typeDef.Name);
AddTypeArguments(shortResult, typeDef, typeArguments, outerTypeParameterCount, typeDef.TypeParameterCount);
return(shortResult);
}
MemberType result = new MemberType();
if (typeDef.DeclaringTypeDefinition != null)
{
// Handle nested types
result.Target = ConvertTypeHelper(typeDef.DeclaringTypeDefinition, typeArguments);
}
else
{
// Handle top-level types
if (string.IsNullOrEmpty(typeDef.Namespace))
{
result.Target = new SimpleType("global");
result.IsDoubleColon = true;
}
else
{
result.Target = ConvertNamespace(typeDef.Namespace);
}
}
result.MemberName = typeDef.Name;
AddTypeArguments(result, typeDef, typeArguments, outerTypeParameterCount, typeDef.TypeParameterCount);
return(result);
}
ResolveResult LookInUsingScopeNamespace(ResolvedUsingScope usingScope, INamespace n, string identifier, IList<IType> typeArguments, bool parameterizeResultType)
{
if (n == null)
return null;
// first look for a namespace
int k = typeArguments.Count;
if (k == 0) {
INamespace childNamespace = n.GetChildNamespace(identifier);
if (childNamespace != null) {
if (usingScope != null && usingScope.HasAlias(identifier))
return new AmbiguousTypeResolveResult(new UnknownType(null, identifier));
return new NamespaceResolveResult(childNamespace);
}
}
// then look for a type
ITypeDefinition def = n.GetTypeDefinition(identifier, k);
if (def != null) {
IType result = def;
if (parameterizeResultType && k > 0) {
result = new ParameterizedType(def, typeArguments);
}
if (usingScope != null && usingScope.HasAlias(identifier))
return new AmbiguousTypeResolveResult(result);
else
return new TypeResolveResult(result);
}
return null;
}
/// <summary>
/// Sets the current using scope that is used to look up identifiers as class names.
/// </summary>
public TypeScriptResolver WithCurrentUsingScope(ResolvedUsingScope usingScope)
{
return WithContext(context.WithUsingScope(usingScope));
}
Expression LookInCurrentUsingScope(ResolveContext rc, string identifier, IList <IType> typeArguments, bool isInUsingDeclaration, bool parameterizeResultType)
{
// look in current namespace definitions
ResolvedUsingScope currentUsingScope = rc.CurrentUsingScope;
for (ResolvedUsingScope u = currentUsingScope; u != null; u = u.Parent)
{
var resultInNamespace = LookInUsingScopeNamespace(rc, u, u.Namespace, identifier, typeArguments, parameterizeResultType);
if (resultInNamespace != null)
{
return(resultInNamespace);
}
// then look for aliases:
if (typeArguments.Count == 0)
{
if (u.ExternAliases.Contains(identifier))
{
return(ResolveExternAlias(rc, identifier));
}
if (!(isInUsingDeclaration && u == currentUsingScope))
{
foreach (var pair in u.UsingAliases)
{
if (pair.Key == identifier)
{
return(pair.Value.ShallowClone());
}
}
}
}
// finally, look in the imported namespaces:
if (!(isInUsingDeclaration && u == currentUsingScope))
{
IType firstResult = null;
foreach (var importedNamespace in u.Usings)
{
ITypeDefinition def = importedNamespace.GetTypeDefinition(identifier, typeArguments.Count);
if (def != null)
{
IType resultType;
if (parameterizeResultType && typeArguments.Count > 0)
{
resultType = new ParameterizedTypeSpec(def, typeArguments);
}
else
{
resultType = def;
}
if (firstResult == null || !TopLevelTypeDefinitionIsAccessible(rc, firstResult.GetDefinition()))
{
if (TopLevelTypeDefinitionIsAccessible(rc, resultType.GetDefinition()))
{
firstResult = resultType;
}
}
else if (TopLevelTypeDefinitionIsAccessible(rc, def))
{
rc.Report.Error(7, loc, "The name `{0}' is ambigious", name);
return(new TypeExpression(firstResult, Location)); // ambigious
}
}
}
if (firstResult != null)
{
return(new TypeExpression(firstResult, Location));
}
}
// if we didn't find anything: repeat lookup with parent namespace
}
return(null);
}
