AbstractType HandleAccessExpressions(PostfixExpression_Access acc, ResolutionContext ctxt)
{
AbstractType pfType = null;
if (acc.PostfixForeExpression is PostfixExpression_Access)
{
pfType = HandleAccessExpressions((PostfixExpression_Access)acc.PostfixForeExpression, ctxt);
}
else
{
pfType = DResolver.StripAliasSymbol(Evaluation.EvaluateType(acc.PostfixForeExpression, ctxt));
if (acc.PostfixForeExpression is IdentifierExpression ||
acc.PostfixForeExpression is TemplateInstanceExpression ||
acc.PostfixForeExpression is PostfixExpression_Access)
{
HandleResult(acc.PostfixForeExpression, pfType);
}
}
var accessedMembers = Evaluation.GetAccessedOverloads(acc, ctxt, pfType);
ctxt.CheckForSingleResult(accessedMembers, acc);
if (accessedMembers != null && accessedMembers.Length != 0)
{
HandleResult(acc, accessedMembers[0]);
return(accessedMembers[0]);
}
return(null);
}
/// <summary>
/// See <see cref="ResolveIdentifier"/>
/// </summary>
public static AbstractType ResolveSingle(string id, ResolutionContext ctxt, ISyntaxRegion idObject, bool ModuleScope = false)
{
var r = ResolveIdentifier(id, ctxt, idObject, ModuleScope);
ctxt.CheckForSingleResult(r, idObject as ISyntaxRegion);
return(r != null && r.Length != 0 ? r[0] : null);
}
/// <summary>
/// See <see cref="Resolve"/>
/// </summary>
public static AbstractType ResolveSingle(IdentifierDeclaration id, ResolutionContext ctxt, AbstractType[] resultBases = null, bool filterForTemplateArgs = true)
{
var r = Resolve(id, ctxt, resultBases, filterForTemplateArgs);
ctxt.CheckForSingleResult(r, id);
return(r != null && r.Length != 0 ? r[0] : null);
}
public AbstractType Visit(DVariable variable)
{
AbstractType bt;
if (CanResolveBase(variable))
{
var bts = TypeDeclarationResolver.Resolve(variable.Type, ctxt);
if (bts != null && bts.Length != 0)
{
bt = bts[0];
}
// For auto variables, use the initializer to get its type
else if (variable.Initializer != null)
{
bt = DResolver.StripMemberSymbols(ExpressionTypeEvaluation.EvaluateType(variable.Initializer, ctxt));
}
else
{
bt = null;
}
// Check if inside an foreach statement header
if (bt == null && ctxt.ScopedStatement != null)
{
bt = GetForeachIteratorType(variable);
}
if (bt == null)
{
ctxt.CheckForSingleResult(bts, variable.Type as ISyntaxRegion ?? variable.Initializer);
}
}
else
{
bt = null;
}
// Note: Also works for aliases! In this case, we simply try to resolve the aliased type, otherwise the variable's base type
return(variable.IsAlias ?
new AliasedType(variable, bt, typeBase) :
new MemberSymbol(variable, bt, typeBase));
}
public static PointerType Resolve(PointerDecl pd, ResolutionContext ctxt)
{
var ptrBaseTypes = Resolve(pd.InnerDeclaration, ctxt);
ctxt.CheckForSingleResult(ptrBaseTypes, pd);
if (ptrBaseTypes == null || ptrBaseTypes.Length == 0)
{
return(null);
}
return(new PointerType(ptrBaseTypes[0], pd));
}
static AbstractType HandleImportSymbolMatch(ImportSymbolNode importSymbolNode, ResolutionContext ctxt)
{
AbstractType ret = null;
var modAlias = importSymbolNode is ModuleAliasNode;
if (modAlias ? importSymbolNode.Type != null : importSymbolNode.Type.InnerDeclaration != null)
{
var mods = new List <DModule> ();
var td = modAlias ? importSymbolNode.Type : importSymbolNode.Type.InnerDeclaration;
foreach (var mod in ctxt.ParseCache.LookupModuleName(td.ToString()))
{
mods.Add(mod);
}
if (mods.Count == 0)
{
ctxt.LogError(new NothingFoundError(importSymbolNode.Type));
}
else
if (mods.Count > 1)
{
var m__ = new List <ISemantic> ();
foreach (var mod in mods)
{
m__.Add(new ModuleSymbol(mod, importSymbolNode.Type));
}
ctxt.LogError(new AmbiguityError(importSymbolNode.Type, m__));
}
var bt = mods.Count != 0 ? (AbstractType) new ModuleSymbol(mods [0], td) : null;
//TODO: Is this correct behaviour?
if (!modAlias)
{
var furtherId = ResolveFurtherTypeIdentifier(importSymbolNode.Type.ToString(false), new[] {
bt
}, ctxt, importSymbolNode.Type);
ctxt.CheckForSingleResult(furtherId, importSymbolNode.Type);
if (furtherId != null && furtherId.Length != 0)
{
bt = furtherId [0];
}
else
{
bt = null;
}
}
ret = new AliasedType(importSymbolNode, bt, importSymbolNode.Type);
}
return(ret);
}
public static AbstractType Resolve(MemberFunctionAttributeDecl attrDecl, ResolutionContext ctxt)
{
if (attrDecl != null)
{
var ret = Resolve(attrDecl.InnerType, ctxt);
ctxt.CheckForSingleResult(ret, attrDecl.InnerType);
if (ret != null && ret.Length != 0 && ret[0] != null)
{
ret[0].Modifier = attrDecl.Modifier;
return(ret[0]);
}
}
return(null);
}
public static AbstractType Resolve(ArrayDecl ad, ResolutionContext ctxt)
{
var valueTypes = Resolve(ad.ValueType, ctxt);
ctxt.CheckForSingleResult(valueTypes, ad);
AbstractType valueType = null;
AbstractType keyType = null;
int fixedArrayLength = -1;
if (valueTypes != null && valueTypes.Length != 0)
{
valueType = valueTypes[0];
}
ISymbolValue val;
keyType = ResolveKey(ad, out fixedArrayLength, out val, ctxt);
if (keyType == null || (keyType is PrimitiveType &&
((PrimitiveType)keyType).TypeToken == DTokens.Int))
{
if (fixedArrayLength >= 0)
{
// D Magic: One might access tuple items directly in the pseudo array declaration - so stuff like Tup[0] i; becomes e.g. int i;
var dtup = DResolver.StripMemberSymbols(valueType) as DTuple;
if (dtup == null)
{
return(new ArrayType(valueType, fixedArrayLength, ad));
}
if (dtup.Items != null && fixedArrayLength < dtup.Items.Length)
{
return(AbstractType.Get(dtup.Items [fixedArrayLength]));
}
else
{
ctxt.LogError(ad, "TypeTuple only consists of " + (dtup.Items != null ? dtup.Items.Length : 0) + " items. Can't access item at index " + fixedArrayLength);
return(null);
}
}
return(new ArrayType(valueType, ad));
}
return(new AssocArrayType(valueType, keyType, ad));
}
public AbstractType Visit(PostfixExpression_MethodCall call)
{
List <ISemantic> callArgs;
ISymbolValue delegValue;
AbstractType[] baseExpression;
TemplateInstanceExpression tix;
GetRawCallOverloads(ctxt, call, out baseExpression, out tix);
var argTypeFilteredOverloads = Evaluation.EvalMethodCall(baseExpression, null, tix, ctxt, call, out callArgs, out delegValue, !ctxt.Options.HasFlag(ResolutionOptions.ReturnMethodReferencesOnly));
// Check if one overload remains and return that one.
ctxt.CheckForSingleResult(argTypeFilteredOverloads, call);
return(argTypeFilteredOverloads != null && argTypeFilteredOverloads.Count != 0 ? argTypeFilteredOverloads[0] : null);
}
public static AbstractType GetMethodReturnType(DelegateType dg, ResolutionContext ctxt)
{
if (dg == null || ctxt == null)
{
return(null);
}
if (dg.IsFunctionLiteral)
{
return(GetMethodReturnType(((FunctionLiteral)dg.DeclarationOrExpressionBase).AnonymousMethod, ctxt));
}
else
{
var rt = ((DelegateDeclaration)dg.DeclarationOrExpressionBase).ReturnType;
var r = Resolve(rt, ctxt);
ctxt.CheckForSingleResult(r, rt);
return(r[0]);
}
}
public static DelegateType Resolve(DelegateDeclaration dg, ResolutionContext ctxt)
{
var returnTypes = Resolve(dg.ReturnType, ctxt);
ctxt.CheckForSingleResult(returnTypes, dg.ReturnType);
if (returnTypes != null && returnTypes.Length != 0)
{
List <AbstractType> paramTypes = null;
if (dg.Parameters != null &&
dg.Parameters.Count != 0)
{
paramTypes = new List <AbstractType>();
foreach (var par in dg.Parameters)
{
paramTypes.Add(ResolveSingle(par.Type, ctxt));
}
}
return(new DelegateType(returnTypes[0], dg, paramTypes));
}
return(null);
}
public AbstractType Visit(UnaryExpression_Type x)
{
var uat = x as UnaryExpression_Type;
if (uat.Type == null)
{
return(null);
}
var types = TypeDeclarationResolver.Resolve(uat.Type, ctxt);
ctxt.CheckForSingleResult(types, uat.Type);
if (types != null && types.Length != 0)
{
return(TypeDeclarationResolver.ResolveSingle(new IdentifierDeclaration(uat.AccessIdentifierHash)
{
EndLocation = uat.EndLocation
}, ctxt, types));
}
return(null);
}
public static AbstractType ResolveKey(ArrayDecl ad, out int fixedArrayLength, out ISymbolValue keyVal, ResolutionContext ctxt)
{
keyVal = null;
fixedArrayLength = -1;
AbstractType keyType = null;
if (ad.KeyExpression != null)
{
//TODO: Template instance expressions?
var id_x = ad.KeyExpression as IdentifierExpression;
if (id_x != null && id_x.IsIdentifier)
{
var id = new IdentifierDeclaration((string)id_x.Value)
{
Location = id_x.Location,
EndLocation = id_x.EndLocation
};
keyType = TypeDeclarationResolver.ResolveSingle(id, ctxt);
if (keyType != null)
{
var tt = DResolver.StripAliasSymbol(keyType) as MemberSymbol;
if (tt == null ||
!(tt.Definition is DVariable) ||
((DVariable)tt.Definition).Initializer == null)
return keyType;
}
}
try
{
keyVal = Evaluation.EvaluateValue(ad.KeyExpression, ctxt);
if (keyVal != null)
{
// Take the value's type as array key type
keyType = keyVal.RepresentedType;
// It should be mostly a number only that points out how large the final array should be
var pv = Evaluation.GetVariableContents(keyVal, new StandardValueProvider(ctxt)) as PrimitiveValue;
if (pv != null)
{
fixedArrayLength = System.Convert.ToInt32(pv.Value);
if (fixedArrayLength < 0)
ctxt.LogError(ad, "Invalid array size: Length value must be greater than 0");
}
//TODO Is there any other type of value allowed?
}
}
catch { }
}
else
{
var t = Resolve(ad.KeyType, ctxt);
ctxt.CheckForSingleResult(t, ad.KeyType);
if (t != null && t.Length != 0)
return t[0];
}
return keyType;
}
public static AbstractType Resolve(MemberFunctionAttributeDecl attrDecl, ResolutionContext ctxt)
{
if (attrDecl != null)
{
var ret = Resolve(attrDecl.InnerType, ctxt);
ctxt.CheckForSingleResult(ret, attrDecl.InnerType);
if (ret != null && ret.Length != 0 && ret[0] != null)
{
ret[0].Modifier = attrDecl.Modifier;
return ret[0];
}
}
return null;
}
public static AbstractType ResolveKey(ArrayDecl ad, out int fixedArrayLength, out ISymbolValue keyVal, ResolutionContext ctxt)
{
keyVal = null;
fixedArrayLength = -1;
AbstractType keyType = null;
if (ad.KeyExpression != null)
{
//TODO: Template instance expressions?
var id_x = ad.KeyExpression as IdentifierExpression;
if (id_x != null && id_x.IsIdentifier)
{
var id = new IdentifierDeclaration((string)id_x.Value)
{
Location = id_x.Location,
EndLocation = id_x.EndLocation
};
keyType = TypeDeclarationResolver.ResolveSingle(id, ctxt);
if (keyType != null)
{
var tt = DResolver.StripAliasSymbol(keyType) as MemberSymbol;
if (tt == null ||
!(tt.Definition is DVariable) ||
((DVariable)tt.Definition).Initializer == null)
{
return(keyType);
}
}
}
try
{
keyVal = Evaluation.EvaluateValue(ad.KeyExpression, ctxt);
if (keyVal != null)
{
// Take the value's type as array key type
keyType = keyVal.RepresentedType;
// It should be mostly a number only that points out how large the final array should be
var pv = Evaluation.GetVariableContents(keyVal, new StandardValueProvider(ctxt)) as PrimitiveValue;
if (pv != null)
{
fixedArrayLength = System.Convert.ToInt32(pv.Value);
if (fixedArrayLength < 0)
{
ctxt.LogError(ad, "Invalid array size: Length value must be greater than 0");
}
}
//TODO Is there any other type of value allowed?
}
}
catch { }
}
else
{
var t = Resolve(ad.KeyType, ctxt);
ctxt.CheckForSingleResult(t, ad.KeyType);
if (t != null && t.Length != 0)
{
return(t[0]);
}
}
return(keyType);
}
public static AbstractType Resolve(ArrayDecl ad, ResolutionContext ctxt)
{
var valueTypes = Resolve(ad.ValueType, ctxt);
ctxt.CheckForSingleResult(valueTypes, ad);
AbstractType valueType = null;
AbstractType keyType = null;
int fixedArrayLength = -1;
if (valueTypes != null && valueTypes.Length != 0)
valueType = valueTypes[0];
ISymbolValue val;
keyType = ResolveKey(ad, out fixedArrayLength, out val, ctxt);
if (keyType == null || (keyType is PrimitiveType &&
((PrimitiveType)keyType).TypeToken == DTokens.Int)) {
if (fixedArrayLength >= 0) {
// D Magic: One might access tuple items directly in the pseudo array declaration - so stuff like Tup[0] i; becomes e.g. int i;
var dtup = DResolver.StripMemberSymbols (valueType) as DTuple;
if (dtup == null)
return new ArrayType (valueType, fixedArrayLength, ad);
if (fixedArrayLength < dtup.Items.Length)
return AbstractType.Get(dtup.Items [fixedArrayLength]);
else {
ctxt.LogError (ad, "TypeTuple only consists of " + dtup.Items.Length + " items. Can't access item at index " + fixedArrayLength);
return null;
}
}
return new ArrayType (valueType, ad);
}
return new AssocArrayType(valueType, keyType, ad);
}
public static DelegateType Resolve(DelegateDeclaration dg, ResolutionContext ctxt)
{
var returnTypes = Resolve(dg.ReturnType, ctxt);
ctxt.CheckForSingleResult(returnTypes, dg.ReturnType);
if (returnTypes != null && returnTypes.Length != 0)
{
List<AbstractType> paramTypes=null;
if(dg.Parameters!=null &&
dg.Parameters.Count != 0)
{
paramTypes = new List<AbstractType>();
foreach(var par in dg.Parameters)
paramTypes.Add(ResolveSingle(par.Type, ctxt));
}
return new DelegateType(returnTypes[0], dg, paramTypes);
}
return null;
}
public static PointerType Resolve(PointerDecl pd, ResolutionContext ctxt)
{
var ptrBaseTypes = Resolve(pd.InnerDeclaration, ctxt);
ctxt.CheckForSingleResult(ptrBaseTypes, pd);
if (ptrBaseTypes == null || ptrBaseTypes.Length == 0)
return null;
return new PointerType(ptrBaseTypes[0], pd);
}
public static AbstractType GetMethodReturnType(DMethod method, ResolutionContext ctxt)
{
if ((ctxt.Options & ResolutionOptions.DontResolveBaseTypes) == ResolutionOptions.DontResolveBaseTypes)
{
return(null);
}
/*
* If a method's type equals null, assume that it's an 'auto' function..
* 1) Search for a return statement
* 2) Resolve the returned expression
* 3) Use that one as the method's type
*/
bool pushMethodScope = ctxt.ScopedBlock != method;
if (method.Type != null)
{
if (pushMethodScope)
{
ctxt.PushNewScope(method);
}
//FIXME: Is it legal to explicitly return a nested type?
var returnType = TypeDeclarationResolver.Resolve(method.Type, ctxt);
if (pushMethodScope)
{
ctxt.Pop();
}
ctxt.CheckForSingleResult(returnType, method.Type);
if (returnType != null && returnType.Length > 0)
{
return(returnType[0]);
}
}
else if (method.Body != null)
{
ReturnStatement returnStmt = null;
var list = new List <IStatement> {
method.Body
};
var list2 = new List <IStatement>();
bool foundMatch = false;
while (!foundMatch && list.Count > 0)
{
foreach (var stmt in list)
{
if (stmt is ReturnStatement)
{
returnStmt = stmt as ReturnStatement;
var te = returnStmt.ReturnExpression as TokenExpression;
if (te == null || te.Token != DTokens.Null)
{
foundMatch = true;
break;
}
}
var statementContainingStatement = stmt as StatementContainingStatement;
if (statementContainingStatement != null)
{
list2.AddRange(statementContainingStatement.SubStatements);
}
}
list = list2;
list2 = new List <IStatement>();
}
if (returnStmt != null && returnStmt.ReturnExpression != null)
{
if (pushMethodScope)
{
var dedTypes = ctxt.CurrentContext.DeducedTemplateParameters;
ctxt.PushNewScope(method, returnStmt);
if (dedTypes.Count != 0)
{
foreach (var kv in dedTypes)
{
ctxt.CurrentContext.DeducedTemplateParameters[kv.Key] = kv.Value;
}
}
}
var t = DResolver.StripMemberSymbols(ExpressionTypeEvaluation.EvaluateType(returnStmt.ReturnExpression, ctxt));
if (pushMethodScope)
{
ctxt.Pop();
}
return(t);
}
return(new PrimitiveType(DTokens.Void));
}
return(null);
}
/// <summary>
/// See <see cref="ResolveIdentifier"/>
/// </summary>
public static AbstractType ResolveSingle(string id, ResolutionContext ctxt, object idObject, bool ModuleScope = false)
{
var r = ResolveIdentifier(id, ctxt, idObject, ModuleScope);
ctxt.CheckForSingleResult(r, idObject as ISyntaxRegion);
return r != null && r.Length != 0 ? r[0] : null;
}
public static List <ISemantic> PreResolveTemplateArgs(TemplateInstanceExpression tix, ResolutionContext ctxt, out bool hasNonFinalArgument)
{
hasNonFinalArgument = false;
// Resolve given argument expressions
var templateArguments = new List <ISemantic>();
if (tix != null && tix.Arguments != null)
{
foreach (var arg in tix.Arguments)
{
if (arg is TypeDeclarationExpression)
{
var tde = (TypeDeclarationExpression)arg;
var res = TypeDeclarationResolver.Resolve(tde.Declaration, ctxt);
if (ctxt.CheckForSingleResult(res, tde.Declaration) || res != null)
{
var mr = res[0] as MemberSymbol;
if (mr != null && mr.Definition is DVariable)
{
var dv = (DVariable)mr.Definition;
if (dv.IsAlias || dv.Initializer == null)
{
templateArguments.Add(mr);
continue;
}
ISemantic eval = null;
try
{
eval = new StandardValueProvider(ctxt)[dv];
}
catch (System.Exception ee) // Should be a non-const-expression error here only
{
ctxt.LogError(dv.Initializer, ee.Message);
}
templateArguments.Add(eval == null ? (ISemantic)mr : eval);
}
else
{
if (!hasNonFinalArgument)
{
hasNonFinalArgument = IsNonFinalArgument(res[0]);
}
templateArguments.Add(res[0]);
}
}
}
else
{
var v = Evaluation.EvaluateValue(arg, ctxt, true);
if (v is VariableValue)
{
var vv = v as VariableValue;
if (vv.Variable.IsConst && vv.Variable.Initializer != null)
{
v = Evaluation.EvaluateValue(vv, new StandardValueProvider(ctxt));
}
}
if (!hasNonFinalArgument)
{
hasNonFinalArgument = IsNonFinalArgument(v);
}
templateArguments.Add(v);
}
}
}
return(templateArguments);
}
/// <summary>
/// The variable's or method's base type will be resolved (if auto type, the intializer's type will be taken).
/// A class' base class will be searched.
/// etc..
/// </summary>
public static AbstractType HandleNodeMatch(
INode m,
ResolutionContext ctxt,
AbstractType resultBase = null,
object typeBase = null)
{
AbstractType ret = null;
// See https://github.com/aBothe/Mono-D/issues/161
int stkC;
if (stackCalls == null)
{
stackCalls = new Dictionary<INode, int>();
stackCalls[m] = stkC = 1;
}
else if (stackCalls.TryGetValue(m, out stkC))
stackCalls[m] = ++stkC;
else
stackCalls[m] = stkC = 1;
/*
* Pushing a new scope is only required if current scope cannot be found in the handled node's hierarchy.
* Edit: No, it is required nearly every time because of nested type declarations - then, we do need the
* current block scope.
*/
bool popAfterwards;
{
var newScope = m is IBlockNode ? (IBlockNode)m : m.Parent as IBlockNode;
popAfterwards = ctxt.ScopedBlock != newScope && newScope != null;
if (popAfterwards) {
var options = ctxt.CurrentContext.ContextDependentOptions;
var applyOptions = ctxt.ScopedBlockIsInNodeHierarchy (m);
ctxt.PushNewScope (newScope);
if (applyOptions)
ctxt.CurrentContext.ContextDependentOptions = options;
}
}
var canResolveBase = ((ctxt.Options & ResolutionOptions.DontResolveBaseTypes) != ResolutionOptions.DontResolveBaseTypes) &&
stkC < 10 && (m.Type == null || m.Type.ToString(false) != m.Name);
// To support resolving type parameters to concrete types if the context allows this, introduce all deduced parameters to the current context
if (resultBase is DSymbol)
ctxt.CurrentContext.IntroduceTemplateParameterTypes((DSymbol)resultBase);
var importSymbolNode = m as ImportSymbolNode;
var variable = m as DVariable;
// Only import symbol aliases are allowed to search in the parse cache
if (importSymbolNode != null)
ret = HandleImportSymbolMatch (importSymbolNode,ctxt);
else if (variable != null)
{
AbstractType bt = null;
if (!(variable is EponymousTemplate)) {
if (canResolveBase) {
var bts = TypeDeclarationResolver.Resolve (variable.Type, ctxt);
ctxt.CheckForSingleResult (bts, variable.Type);
if (bts != null && bts.Length != 0)
bt = bts [0];
// For auto variables, use the initializer to get its type
else if (variable.Initializer != null) {
bt = DResolver.StripMemberSymbols (Evaluation.EvaluateType (variable.Initializer, ctxt));
}
// Check if inside an foreach statement header
if (bt == null && ctxt.ScopedStatement != null)
bt = GetForeachIteratorType (variable, ctxt);
}
// Note: Also works for aliases! In this case, we simply try to resolve the aliased type, otherwise the variable's base type
ret = variable.IsAlias ?
new AliasedType (variable, bt, typeBase as ISyntaxRegion) as MemberSymbol :
new MemberSymbol (variable, bt, typeBase as ISyntaxRegion);
} else
ret = new EponymousTemplateType (variable as EponymousTemplate, GetInvisibleTypeParameters(variable, ctxt).AsReadOnly(), typeBase as ISyntaxRegion);
}
else if (m is DMethod)
{
ret = new MemberSymbol(m as DNode,canResolveBase ? GetMethodReturnType(m as DMethod, ctxt) : null, typeBase as ISyntaxRegion);
}
else if (m is DClassLike)
ret = HandleClassLikeMatch (m as DClassLike, ctxt, typeBase, canResolveBase);
else if (m is DModule)
{
var mod = (DModule)m;
if (typeBase != null && typeBase.ToString() != mod.ModuleName)
{
var pack = ctxt.ParseCache.LookupPackage(typeBase.ToString()).FirstOrDefault();
if (pack != null)
ret = new PackageSymbol(pack, typeBase as ISyntaxRegion);
}
else
ret = new ModuleSymbol(m as DModule, typeBase as ISyntaxRegion);
}
else if (m is DEnum)
ret = new EnumType((DEnum)m, typeBase as ISyntaxRegion);
else if (m is TemplateParameter.Node)
{
//ResolveResult[] templateParameterType = null;
//TODO: Resolve the specialization type
//var templateParameterType = TemplateInstanceHandler.ResolveTypeSpecialization(tmp, ctxt);
ret = new TemplateParameterSymbol((m as TemplateParameter.Node).TemplateParameter, null, typeBase as ISyntaxRegion);
}
else if(m is NamedTemplateMixinNode)
{
var tmxNode = m as NamedTemplateMixinNode;
ret = new MemberSymbol(tmxNode, canResolveBase ? ResolveSingle(tmxNode.Type, ctxt) : null, typeBase as ISyntaxRegion);
}
if (popAfterwards)
ctxt.Pop();
else if (resultBase is DSymbol)
ctxt.CurrentContext.RemoveParamTypesFromPreferredLocals((DSymbol)resultBase);
if (stkC == 1)
stackCalls.Remove(m);
else
stackCalls[m] = stkC-1;
return ret;
}
static AbstractType HandleImportSymbolMatch (ImportSymbolNode importSymbolNode,ResolutionContext ctxt)
{
AbstractType ret = null;
var modAlias = importSymbolNode is ModuleAliasNode;
if (modAlias ? importSymbolNode.Type != null : importSymbolNode.Type.InnerDeclaration != null) {
var mods = new List<DModule> ();
var td = modAlias ? importSymbolNode.Type : importSymbolNode.Type.InnerDeclaration;
foreach (var mod in ctxt.ParseCache.LookupModuleName (td.ToString ()))
mods.Add (mod);
if (mods.Count == 0)
ctxt.LogError (new NothingFoundError (importSymbolNode.Type));
else
if (mods.Count > 1) {
var m__ = new List<ISemantic> ();
foreach (var mod in mods)
m__.Add (new ModuleSymbol (mod, importSymbolNode.Type));
ctxt.LogError (new AmbiguityError (importSymbolNode.Type, m__));
}
var bt = mods.Count != 0 ? (AbstractType)new ModuleSymbol (mods [0], td) : null;
//TODO: Is this correct behaviour?
if (!modAlias) {
var furtherId = ResolveFurtherTypeIdentifier (importSymbolNode.Type.ToString (false), new[] {
bt
}, ctxt, importSymbolNode.Type);
ctxt.CheckForSingleResult (furtherId, importSymbolNode.Type);
if (furtherId != null && furtherId.Length != 0)
bt = furtherId [0];
else
bt = null;
}
ret = new AliasedType (importSymbolNode, bt, importSymbolNode.Type);
}
return ret;
}
public static AbstractType GetMethodReturnType(DelegateType dg, ResolutionContext ctxt)
{
if (dg == null || ctxt == null)
return null;
if (dg.IsFunctionLiteral)
return GetMethodReturnType(((FunctionLiteral)dg.DeclarationOrExpressionBase).AnonymousMethod, ctxt);
else
{
var rt = ((DelegateDeclaration)dg.DeclarationOrExpressionBase).ReturnType;
var r = Resolve(rt, ctxt);
ctxt.CheckForSingleResult(r, rt);
return r[0];
}
}
AbstractType HandleAccessExpressions(PostfixExpression_Access acc, ResolutionContext ctxt)
{
AbstractType pfType = null;
if (acc.PostfixForeExpression is PostfixExpression_Access)
pfType = HandleAccessExpressions((PostfixExpression_Access)acc.PostfixForeExpression, ctxt);
else
{
pfType = DResolver.StripAliasSymbol(Evaluation.EvaluateType(acc.PostfixForeExpression, ctxt));
if (acc.PostfixForeExpression is IdentifierExpression ||
acc.PostfixForeExpression is TemplateInstanceExpression ||
acc.PostfixForeExpression is PostfixExpression_Access)
HandleResult(acc.PostfixForeExpression, pfType);
}
var accessedMembers = Evaluation.GetAccessedOverloads(acc, ctxt, pfType);
ctxt.CheckForSingleResult(accessedMembers, acc);
if (accessedMembers != null && accessedMembers.Length != 0)
{
HandleResult(acc, accessedMembers[0]);
return accessedMembers[0];
}
return null;
}
public static AbstractType ResolveSingle(ITypeDeclaration declaration, ResolutionContext ctxt)
{
if (declaration is IdentifierDeclaration)
{
return(ResolveSingle(declaration as IdentifierDeclaration, ctxt));
}
else if (declaration is TemplateInstanceExpression)
{
var a = ExpressionTypeEvaluation.GetOverloads(declaration as TemplateInstanceExpression, ctxt);
ctxt.CheckForSingleResult(a, declaration);
return(a != null && a.Length != 0 ? a[0] : null);
}
AbstractType t = null;
if (declaration is DTokenDeclaration)
{
t = Resolve(declaration as DTokenDeclaration);
}
else if (declaration is TypeOfDeclaration)
{
t = Resolve(declaration as TypeOfDeclaration, ctxt);
}
else if (declaration is MemberFunctionAttributeDecl)
{
t = Resolve(declaration as MemberFunctionAttributeDecl, ctxt);
}
else if (declaration is ArrayDecl)
{
t = Resolve(declaration as ArrayDecl, ctxt);
}
else if (declaration is PointerDecl)
{
t = Resolve(declaration as PointerDecl, ctxt);
}
else if (declaration is DelegateDeclaration)
{
t = Resolve(declaration as DelegateDeclaration, ctxt);
}
//TODO: VarArgDeclaration
else if (declaration is ITemplateParameterDeclaration)
{
var tpd = declaration as ITemplateParameterDeclaration;
var templateParameter = tpd.TemplateParameter;
//TODO: Is this correct handling?
while (templateParameter is TemplateThisParameter)
{
templateParameter = (templateParameter as TemplateThisParameter).FollowParameter;
}
if (tpd.TemplateParameter is TemplateValueParameter)
{
// Return a member result -- it's a static variable
}
else
{
// Return a type result?
}
}
return(t);
}
public static AbstractType ResolveSingle(ITypeDeclaration declaration, ResolutionContext ctxt)
{
if (declaration is IdentifierDeclaration)
return ResolveSingle(declaration as IdentifierDeclaration, ctxt);
else if (declaration is TemplateInstanceExpression)
{
var a = Evaluation.GetOverloads(declaration as TemplateInstanceExpression, ctxt);
ctxt.CheckForSingleResult(a, declaration);
return a != null && a.Length != 0 ? a[0] : null;
}
AbstractType t = null;
if (declaration is DTokenDeclaration)
t = Resolve(declaration as DTokenDeclaration);
else if (declaration is TypeOfDeclaration)
t = Resolve(declaration as TypeOfDeclaration, ctxt);
else if (declaration is MemberFunctionAttributeDecl)
t = Resolve(declaration as MemberFunctionAttributeDecl, ctxt);
else if (declaration is ArrayDecl)
t = Resolve(declaration as ArrayDecl, ctxt);
else if (declaration is PointerDecl)
t = Resolve(declaration as PointerDecl, ctxt);
else if (declaration is DelegateDeclaration)
t = Resolve(declaration as DelegateDeclaration, ctxt);
//TODO: VarArgDeclaration
else if (declaration is ITemplateParameterDeclaration)
{
var tpd = declaration as ITemplateParameterDeclaration;
var templateParameter = tpd.TemplateParameter;
//TODO: Is this correct handling?
while (templateParameter is TemplateThisParameter)
templateParameter = (templateParameter as TemplateThisParameter).FollowParameter;
if (tpd.TemplateParameter is TemplateValueParameter)
{
// Return a member result -- it's a static variable
}
else
{
// Return a type result?
}
}
return t;
}
/// <summary>
/// See <see cref="Resolve"/>
/// </summary>
public static AbstractType ResolveSingle(IdentifierDeclaration id, ResolutionContext ctxt, AbstractType[] resultBases = null, bool filterForTemplateArgs = true)
{
var r = Resolve(id, ctxt, resultBases, filterForTemplateArgs);
ctxt.CheckForSingleResult(r, id);
return r != null && r.Length != 0 ? r[0] : null;
}
public static AbstractType GetMethodReturnType(DMethod method, ResolutionContext ctxt)
{
if ((ctxt.Options & ResolutionOptions.DontResolveBaseTypes) == ResolutionOptions.DontResolveBaseTypes)
return null;
/*
* If a method's type equals null, assume that it's an 'auto' function..
* 1) Search for a return statement
* 2) Resolve the returned expression
* 3) Use that one as the method's type
*/
bool pushMethodScope = ctxt.ScopedBlock != method;
if (method.Type != null)
{
if (pushMethodScope)
ctxt.PushNewScope(method);
//FIXME: Is it legal to explicitly return a nested type?
var returnType = TypeDeclarationResolver.Resolve(method.Type, ctxt);
if (pushMethodScope)
ctxt.Pop();
ctxt.CheckForSingleResult(returnType, method.Type);
if(returnType != null && returnType.Length > 0)
return returnType[0];
}
else if (method.Body != null)
{
ReturnStatement returnStmt = null;
var list = new List<IStatement> { method.Body };
var list2 = new List<IStatement>();
bool foundMatch = false;
while (!foundMatch && list.Count > 0)
{
foreach (var stmt in list)
{
if (stmt is ReturnStatement)
{
returnStmt = stmt as ReturnStatement;
var te = returnStmt.ReturnExpression as TokenExpression;
if (te == null || te.Token != DTokens.Null)
{
foundMatch = true;
break;
}
}
var statementContainingStatement = stmt as StatementContainingStatement;
if (statementContainingStatement != null)
list2.AddRange(statementContainingStatement.SubStatements);
}
list = list2;
list2 = new List<IStatement>();
}
if (returnStmt != null && returnStmt.ReturnExpression != null)
{
if (pushMethodScope)
{
var dedTypes = ctxt.CurrentContext.DeducedTemplateParameters;
ctxt.PushNewScope(method,returnStmt);
if (dedTypes.Count != 0)
foreach (var kv in dedTypes)
ctxt.CurrentContext.DeducedTemplateParameters[kv.Key] = kv.Value;
}
var t =DResolver.StripMemberSymbols(Evaluation.EvaluateType(returnStmt.ReturnExpression, ctxt));
if (pushMethodScope)
ctxt.Pop();
return t;
}
return new PrimitiveType (DTokens.Void);
}
return null;
}
public static List<ISemantic> PreResolveTemplateArgs(TemplateInstanceExpression tix, ResolutionContext ctxt, out bool hasNonFinalArgument)
{
hasNonFinalArgument = false;
// Resolve given argument expressions
var templateArguments = new List<ISemantic>();
if (tix != null && tix.Arguments!=null)
foreach (var arg in tix.Arguments)
{
if (arg is TypeDeclarationExpression)
{
var tde = (TypeDeclarationExpression)arg;
var res = TypeDeclarationResolver.Resolve(tde.Declaration, ctxt);
if (ctxt.CheckForSingleResult(res, tde.Declaration) || res != null)
{
var mr = res[0] as MemberSymbol;
if (mr != null && mr.Definition is DVariable)
{
var dv = (DVariable)mr.Definition;
if (dv.IsAlias || dv.Initializer == null)
{
templateArguments.Add(mr);
continue;
}
ISemantic eval = null;
try
{
eval = new StandardValueProvider(ctxt)[dv];
}
catch(System.Exception ee) // Should be a non-const-expression error here only
{
ctxt.LogError(dv.Initializer, ee.Message);
}
templateArguments.Add(eval==null ? (ISemantic)mr : eval);
}
else{
if(!hasNonFinalArgument)
hasNonFinalArgument = IsNonFinalArgument(res[0]);
templateArguments.Add(res[0]);
}
}
}
else
{
var v = Evaluation.EvaluateValue(arg, ctxt, true);
if (v is VariableValue)
{
var vv = v as VariableValue;
if (vv.Variable.IsConst && vv.Variable.Initializer != null)
v = Evaluation.EvaluateValue(vv, new StandardValueProvider(ctxt));
}
if(!hasNonFinalArgument)
hasNonFinalArgument = IsNonFinalArgument(v);
templateArguments.Add(v);
}
}
return templateArguments;
}
/// <summary>
/// Takes the class passed via the tr, and resolves its base class and/or implemented interfaces.
/// Also usable for enums.
///
/// Never returns null. Instead, the original 'tr' object will be returned if no base class was resolved.
/// Will clone 'tr', whereas the new object will contain the base class.
/// </summary>
public static UserDefinedType ResolveBaseClasses(UserDefinedType tr, ResolutionContext ctxt, bool ResolveFirstBaseIdOnly = false)
{
if (bcStack > 8)
{
bcStack--;
return(tr);
}
if (tr is EnumType)
{
var et = tr as EnumType;
AbstractType bt = null;
if (et.Definition.Type == null)
{
bt = new PrimitiveType(DTokens.Int);
}
else
{
if (tr.Definition.Parent is IBlockNode)
{
ctxt.PushNewScope((IBlockNode)tr.Definition.Parent);
}
var bts = TypeDeclarationResolver.Resolve(et.Definition.Type, ctxt);
if (tr.Definition.Parent is IBlockNode)
{
ctxt.Pop();
}
ctxt.CheckForSingleResult(bts, et.Definition.Type);
if (bts != null && bts.Length != 0)
{
bt = bts[0];
}
}
return(new EnumType(et.Definition, bt, et.DeclarationOrExpressionBase));
}
var dc = tr.Definition as DClassLike;
// Return immediately if searching base classes of the Object class
if (dc == null || ((dc.BaseClasses == null || dc.BaseClasses.Count < 1) && dc.Name == "Object"))
{
return(tr);
}
// If no base class(es) specified, and if it's no interface that is handled, return the global Object reference
// -- and do not throw any error message, it's ok
if (dc.BaseClasses == null || dc.BaseClasses.Count < 1)
{
if (tr is ClassType) // Only Classes can inherit from non-interfaces
{
return(new ClassType(dc, tr.DeclarationOrExpressionBase, ctxt.ParseCache.ObjectClassResult));
}
return(tr);
}
#region Base class & interface resolution
TemplateIntermediateType baseClass = null;
var interfaces = new List <InterfaceType>();
if (!(tr is ClassType || tr is InterfaceType))
{
if (dc.BaseClasses.Count != 0)
{
ctxt.LogError(dc, "Only classes and interfaces may inherit from other classes/interfaces");
}
return(tr);
}
for (int i = 0; i < (ResolveFirstBaseIdOnly ? 1 : dc.BaseClasses.Count); i++)
{
var type = dc.BaseClasses[i];
// If there's an explicit 'Object' inheritance, also return the pre-resolved object class
if (type is IdentifierDeclaration && ((IdentifierDeclaration)type).Id == "Object")
{
if (baseClass != null)
{
ctxt.LogError(new ResolutionError(dc, "Class must not have two base classes"));
continue;
}
else if (i != 0)
{
ctxt.LogError(new ResolutionError(dc, "The base class name must preceed base interfaces"));
continue;
}
baseClass = ctxt.ParseCache.ObjectClassResult;
continue;
}
if (type == null || type.ToString(false) == dc.Name || dc.NodeRoot == dc)
{
ctxt.LogError(new ResolutionError(dc, "A class cannot inherit from itself"));
continue;
}
ctxt.PushNewScope(dc.Parent as IBlockNode);
bcStack++;
var res = DResolver.StripAliasSymbols(TypeDeclarationResolver.Resolve(type, ctxt));
ctxt.CheckForSingleResult(res, type);
if (res != null && res.Length != 0)
{
var r = res[0];
if (r is ClassType || r is TemplateType)
{
if (tr is InterfaceType)
{
ctxt.LogError(new ResolutionError(type, "An interface cannot inherit from non-interfaces"));
}
else if (i == 0)
{
baseClass = (TemplateIntermediateType)r;
}
else
{
ctxt.LogError(new ResolutionError(dc, "The base " + (r is ClassType ? "class" : "template") + " name must preceed base interfaces"));
}
}
else if (r is InterfaceType)
{
interfaces.Add((InterfaceType)r);
}
else
{
ctxt.LogError(new ResolutionError(type, "Resolved class is neither a class nor an interface"));
continue;
}
}
bcStack--;
ctxt.Pop();
}
#endregion
if (baseClass == null && interfaces.Count == 0)
{
return(tr);
}
if (tr is ClassType)
{
return(new ClassType(dc, tr.DeclarationOrExpressionBase, baseClass, interfaces.Count == 0 ? null : interfaces.ToArray(), tr.DeducedTypes));
}
else if (tr is InterfaceType)
{
return(new InterfaceType(dc, tr.DeclarationOrExpressionBase, interfaces.Count == 0 ? null : interfaces.ToArray(), tr.DeducedTypes));
}
// Method should end here
return(tr);
}
/// <summary>
/// Takes the class passed via the tr, and resolves its base class and/or implemented interfaces.
/// Also usable for enums.
///
/// Never returns null. Instead, the original 'tr' object will be returned if no base class was resolved.
/// Will clone 'tr', whereas the new object will contain the base class.
/// </summary>
public static TemplateIntermediateType ResolveClassOrInterface(DClassLike dc, ResolutionContext ctxt, ISyntaxRegion instanceDeclaration, bool ResolveFirstBaseIdOnly = false, IEnumerable <TemplateParameterSymbol> extraDeducedTemplateParams = null)
{
if (parsedClassInstanceDecls == null)
{
parsedClassInstanceDecls = new List <ISyntaxRegion> ();
}
switch (dc.ClassType)
{
case DTokens.Class:
case DTokens.Interface:
break;
default:
if (dc.BaseClasses.Count != 0)
{
ctxt.LogError(dc, "Only classes and interfaces may inherit from other classes/interfaces");
}
return(null);
}
bool isClass = dc.ClassType == DTokens.Class;
if (bcStack > 6 || (instanceDeclaration != null && parsedClassInstanceDecls.Contains(instanceDeclaration)))
{
return(isClass ? new ClassType(dc, instanceDeclaration, null) as TemplateIntermediateType : new InterfaceType(dc, instanceDeclaration));
}
if (instanceDeclaration != null)
{
parsedClassInstanceDecls.Add(instanceDeclaration);
}
bcStack++;
var deducedTypes = new DeducedTypeDictionary(dc);
var tix = instanceDeclaration as TemplateInstanceExpression;
if (tix != null && (ctxt.Options & ResolutionOptions.NoTemplateParameterDeduction) == 0)
{
bool hasUndeterminedArgs;
var givenTemplateArguments = TemplateInstanceHandler.PreResolveTemplateArgs(tix, ctxt, out hasUndeterminedArgs);
if (!TemplateInstanceHandler.DeduceParams(givenTemplateArguments, false, ctxt, null, dc, deducedTypes))
{
parsedClassInstanceDecls.Remove(instanceDeclaration);
bcStack--;
return(null);
}
}
if (extraDeducedTemplateParams != null)
{
foreach (var tps in extraDeducedTemplateParams)
{
deducedTypes[tps.Parameter] = tps;
}
}
if (dc.BaseClasses == null || dc.BaseClasses.Count < 1)
{
parsedClassInstanceDecls.Remove(instanceDeclaration);
bcStack--;
// The Object class has no further base class;
// Normal class instances have the object as base class;
// Interfaces must not have any default base class/interface
return(isClass ? new ClassType(dc, instanceDeclaration, dc.NameHash != ObjectNameHash ? ctxt.ParseCache.ObjectClassResult : null, null, deducedTypes.Count != 0 ? deducedTypes.ToReadonly() : null) :
new InterfaceType(dc, instanceDeclaration, null, deducedTypes.Count != 0 ? deducedTypes.ToReadonly() : null) as TemplateIntermediateType);
}
#region Base class & interface resolution
AbstractType[] res;
var pop = ctxt.ScopedBlock != dc.Parent;
if (pop)
{
ctxt.PushNewScope(dc.Parent as IBlockNode);
}
foreach (var kv in deducedTypes)
{
ctxt.CurrentContext.DeducedTemplateParameters[kv.Key] = kv.Value;
}
TemplateIntermediateType baseClass = null;
var interfaces = new List <InterfaceType>();
try
{
for (int i = 0; i < (ResolveFirstBaseIdOnly ? 1 : dc.BaseClasses.Count); i++)
{
var type = dc.BaseClasses[i];
// If there's an explicit 'Object' inheritance, also return the pre-resolved object class
if (type is IdentifierDeclaration &&
(type as IdentifierDeclaration).IdHash == ObjectNameHash)
{
if (baseClass != null)
{
ctxt.LogError(new ResolutionError(dc, "Class must not have two base classes"));
continue;
}
else if (i != 0)
{
ctxt.LogError(new ResolutionError(dc, "The base class name must preceed base interfaces"));
continue;
}
baseClass = ctxt.ParseCache.ObjectClassResult;
continue;
}
if (type == null || (type is IdentifierDeclaration && (type as IdentifierDeclaration).IdHash == dc.NameHash) || dc.NodeRoot == dc)
{
ctxt.LogError(new ResolutionError(dc, "A class cannot inherit from itself"));
continue;
}
res = DResolver.StripAliasSymbols(TypeDeclarationResolver.Resolve(type, ctxt));
ctxt.CheckForSingleResult(res, type);
if (res != null && res.Length != 0)
{
var r = res[0];
if (r is ClassType || r is TemplateType)
{
if (!isClass)
{
ctxt.LogError(new ResolutionError(type, "An interface cannot inherit from non-interfaces"));
}
else if (i == 0)
{
baseClass = r as TemplateIntermediateType;
}
else
{
ctxt.LogError(new ResolutionError(dc, "The base " + (r is ClassType ? "class" : "template") + " name must preceed base interfaces"));
}
}
else if (r is InterfaceType)
{
interfaces.Add(r as InterfaceType);
if (isClass && dc.NameHash != ObjectNameHash && baseClass == null)
{
baseClass = ctxt.ParseCache.ObjectClassResult;
}
}
else
{
ctxt.LogError(new ResolutionError(type, "Resolved class is neither a class nor an interface"));
continue;
}
}
}
}
finally
{
bcStack--;
parsedClassInstanceDecls.Remove(instanceDeclaration);
}
if (pop)
{
ctxt.Pop();
}
else
{
foreach (var kv in deducedTypes) // May be backup old tps?
{
ctxt.CurrentContext.DeducedTemplateParameters.Remove(kv.Key);
}
}
#endregion
if (isClass)
{
return(new ClassType(dc, instanceDeclaration, baseClass, interfaces.Count == 0 ? null : interfaces.ToArray(), deducedTypes.Count != 0 ? deducedTypes.ToReadonly() : null));
}
return(new InterfaceType(dc, instanceDeclaration, interfaces.Count == 0 ? null : interfaces.ToArray(), deducedTypes.Count != 0 ? deducedTypes.ToReadonly() : null));
}
/// <summary>
/// The variable's or method's base type will be resolved (if auto type, the intializer's type will be taken).
/// A class' base class will be searched.
/// etc..
/// </summary>
public static AbstractType HandleNodeMatch(
INode m,
ResolutionContext ctxt,
AbstractType resultBase = null,
object typeBase = null)
{
AbstractType ret = null;
// See https://github.com/aBothe/Mono-D/issues/161
int stkC;
if (stackCalls == null)
{
stackCalls = new Dictionary <INode, int>();
stackCalls[m] = stkC = 1;
}
else if (stackCalls.TryGetValue(m, out stkC))
{
stackCalls[m] = ++stkC;
}
else
{
stackCalls[m] = stkC = 1;
}
/*
* Pushing a new scope is only required if current scope cannot be found in the handled node's hierarchy.
* Edit: No, it is required nearly every time because of nested type declarations - then, we do need the
* current block scope.
*/
bool popAfterwards;
{
var newScope = m is IBlockNode ? (IBlockNode)m : m.Parent as IBlockNode;
popAfterwards = ctxt.ScopedBlock != newScope && newScope != null;
if (popAfterwards)
{
var options = ctxt.CurrentContext.ContextDependentOptions;
var applyOptions = ctxt.ScopedBlockIsInNodeHierarchy(m);
ctxt.PushNewScope(newScope);
if (applyOptions)
{
ctxt.CurrentContext.ContextDependentOptions = options;
}
}
}
var canResolveBase = ((ctxt.Options & ResolutionOptions.DontResolveBaseTypes) != ResolutionOptions.DontResolveBaseTypes) &&
stkC < 10 && (m.Type == null || m.Type.ToString(false) != m.Name);
// To support resolving type parameters to concrete types if the context allows this, introduce all deduced parameters to the current context
if (resultBase is DSymbol)
{
ctxt.CurrentContext.IntroduceTemplateParameterTypes((DSymbol)resultBase);
}
var importSymbolNode = m as ImportSymbolNode;
var variable = m as DVariable;
// Only import symbol aliases are allowed to search in the parse cache
if (importSymbolNode != null)
{
ret = HandleImportSymbolMatch(importSymbolNode, ctxt);
}
else if (variable != null)
{
AbstractType bt = null;
if (!(variable is EponymousTemplate))
{
if (canResolveBase)
{
var bts = TypeDeclarationResolver.Resolve(variable.Type, ctxt);
ctxt.CheckForSingleResult(bts, variable.Type);
if (bts != null && bts.Length != 0)
{
bt = bts [0];
}
// For auto variables, use the initializer to get its type
else if (variable.Initializer != null)
{
bt = DResolver.StripMemberSymbols(Evaluation.EvaluateType(variable.Initializer, ctxt));
}
// Check if inside an foreach statement header
if (bt == null && ctxt.ScopedStatement != null)
{
bt = GetForeachIteratorType(variable, ctxt);
}
}
// Note: Also works for aliases! In this case, we simply try to resolve the aliased type, otherwise the variable's base type
ret = variable.IsAlias ?
new AliasedType(variable, bt, typeBase as ISyntaxRegion) as MemberSymbol :
new MemberSymbol(variable, bt, typeBase as ISyntaxRegion);
}
else
{
ret = new EponymousTemplateType(variable as EponymousTemplate, GetInvisibleTypeParameters(variable, ctxt).AsReadOnly(), typeBase as ISyntaxRegion);
}
}
else if (m is DMethod)
{
ret = new MemberSymbol(m as DNode, canResolveBase ? GetMethodReturnType(m as DMethod, ctxt) : null, typeBase as ISyntaxRegion);
}
else if (m is DClassLike)
{
ret = HandleClassLikeMatch(m as DClassLike, ctxt, typeBase, canResolveBase);
}
else if (m is DModule)
{
var mod = (DModule)m;
if (typeBase != null && typeBase.ToString() != mod.ModuleName)
{
var pack = ctxt.ParseCache.LookupPackage(typeBase.ToString()).FirstOrDefault();
if (pack != null)
{
ret = new PackageSymbol(pack, typeBase as ISyntaxRegion);
}
}
else
{
ret = new ModuleSymbol(m as DModule, typeBase as ISyntaxRegion);
}
}
else if (m is DEnum)
{
ret = new EnumType((DEnum)m, typeBase as ISyntaxRegion);
}
else if (m is TemplateParameter.Node)
{
//ResolveResult[] templateParameterType = null;
//TODO: Resolve the specialization type
//var templateParameterType = TemplateInstanceHandler.ResolveTypeSpecialization(tmp, ctxt);
ret = new TemplateParameterSymbol((m as TemplateParameter.Node).TemplateParameter, null, typeBase as ISyntaxRegion);
}
else if (m is NamedTemplateMixinNode)
{
var tmxNode = m as NamedTemplateMixinNode;
ret = new MemberSymbol(tmxNode, canResolveBase ? ResolveSingle(tmxNode.Type, ctxt) : null, typeBase as ISyntaxRegion);
}
if (popAfterwards)
{
ctxt.Pop();
}
else if (resultBase is DSymbol)
{
ctxt.CurrentContext.RemoveParamTypesFromPreferredLocals((DSymbol)resultBase);
}
if (stkC == 1)
{
stackCalls.Remove(m);
}
else
{
stackCalls[m] = stkC - 1;
}
return(ret);
}