public static AbstractType[] ResolveType(IEditorData editor, AstReparseOptions Options = AstReparseOptions.AlsoParseBeyondCaret, ResolutionContext ctxt = null)
{
if (ctxt == null)
{
ctxt = ResolutionContext.Create(editor);
}
var o = GetScopedCodeObject(editor, Options, ctxt);
var optionBackup = ctxt.CurrentContext.ContextDependentOptions;
ctxt.CurrentContext.ContextDependentOptions |= ResolutionOptions.ReturnMethodReferencesOnly;
AbstractType[] ret;
if (o is IExpression)
{
ret = Evaluation.EvaluateTypes((IExpression)o, ctxt);
}
else if (o is ITypeDeclaration)
{
ret = TypeDeclarationResolver.Resolve((ITypeDeclaration)o, ctxt);
}
else
{
ret = null;
}
ctxt.CurrentContext.ContextDependentOptions = optionBackup;
return(ret);
}
static AbstractType[] TryGetImplicitProperty(TemplateType template, ResolutionContext ctxt)
{
// Prepare a new context
bool pop = !ctxt.ScopedBlockIsInNodeHierarchy(template.Definition);
if (pop)
{
ctxt.PushNewScope(template.Definition);
}
// Introduce the deduced params to the current resolution context
ctxt.CurrentContext.IntroduceTemplateParameterTypes(template);
// Get actual overloads
var matchingChild = TypeDeclarationResolver.ResolveFurtherTypeIdentifier(template.NameHash, new[] { template }, ctxt);
// Undo context-related changes
if (pop)
{
ctxt.Pop();
}
else
{
ctxt.CurrentContext.RemoveParamTypesFromPreferredLocals(template);
}
return(matchingChild);
}
public static AbstractType[] ResolveTypeLoosely(IEditorData editor, out NodeResolutionAttempt resolutionAttempt, ResolutionContext ctxt = null)
{
if (ctxt == null)
{
ctxt = ResolutionContext.Create(editor);
}
var o = GetScopedCodeObject(editor, ctxt: ctxt);
var optionBackup = ctxt.CurrentContext.ContextDependentOptions;
ctxt.CurrentContext.ContextDependentOptions |= ResolutionOptions.ReturnMethodReferencesOnly;
resolutionAttempt = NodeResolutionAttempt.Normal;
AbstractType[] ret;
if (o is IExpression)
{
ret = Evaluation.EvaluateTypes((IExpression)o, ctxt);
}
else if (o is ITypeDeclaration)
{
ret = TypeDeclarationResolver.Resolve((ITypeDeclaration)o, ctxt);
}
else
{
ret = null;
}
if (ret == null)
{
resolutionAttempt = NodeResolutionAttempt.NoParameterOrTemplateDeduction;
if (o is PostfixExpression_MethodCall)
{
o = (o as PostfixExpression_MethodCall).PostfixForeExpression;
}
if (o is IdentifierExpression)
{
ret = Evaluation.GetOverloads(o as IdentifierExpression, ctxt, false);
}
else if (o is ITypeDeclaration)
{
ctxt.CurrentContext.ContextDependentOptions |= ResolutionOptions.NoTemplateParameterDeduction;
ret = TypeDeclarationResolver.Resolve(o as ITypeDeclaration, ctxt);
}
}
if (ret == null)
{
resolutionAttempt = NodeResolutionAttempt.RawSymbolLookup;
ret = TypeDeclarationResolver.HandleNodeMatches(LookupIdRawly(editor, o as ISyntaxRegion), ctxt);
}
ctxt.CurrentContext.ContextDependentOptions = optionBackup;
return(ret);
}
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);
}
public static MemberSymbol[] TryResolveUFCS(
ISemantic firstArgument,
PostfixExpression_Access acc,
ResolutionContext ctxt)
{
if (ctxt == null)
{
return(null);
}
int name = 0;
if (acc.AccessExpression is IdentifierExpression)
{
name = ((IdentifierExpression)acc.AccessExpression).ValueStringHash;
}
else if (acc.AccessExpression is TemplateInstanceExpression)
{
name = ((TemplateInstanceExpression)acc.AccessExpression).TemplateIdHash;
}
else
{
return(null);
}
var methodMatches = new List <MemberSymbol>();
if (ctxt.ParseCache != null)
{
foreach (var pc in ctxt.ParseCache)
{
var tempResults = pc.UfcsCache.FindFitting(ctxt, acc.Location, firstArgument, name);
if (tempResults != null)
{
foreach (var m in tempResults)
{
ctxt.PushNewScope(m);
if (m.TemplateParameters != null && m.TemplateParameters.Length != 0)
{
var ov = TemplateInstanceHandler.DeduceParamsAndFilterOverloads(
new[] { new MemberSymbol(m, null, acc) },
new[] { firstArgument }, true, ctxt);
if (ov == null || ov.Length == 0)
{
continue;
}
var ms = (DSymbol)ov[0];
ctxt.CurrentContext.IntroduceTemplateParameterTypes(ms);
}
var mr = TypeDeclarationResolver.HandleNodeMatch(m, ctxt, null, acc) as MemberSymbol;
if (mr != null)
{
mr.FirstArgument = firstArgument;
mr.DeducedTypes = ctxt.CurrentContext.DeducedTemplateParameters.ToReadonly();
mr.IsUFCSResult = true;
methodMatches.Add(mr);
}
ctxt.Pop();
}
}
}
}
return(methodMatches.Count == 0 ? null : methodMatches.ToArray());
}
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);
}
/// <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);
}
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);
}