public static string GeneratePrototype(AbstractType t, int currentParameter = -1, bool isInTemplateArgInsight = false)
{
var ms = t as MemberSymbol;
if (ms != null)
{
if (ms.Definition is DVariable)
{
var bt = DResolver.StripAliasSymbol(ms.Base);
if (bt is DelegateType)
{
return(VDServerCompletionDataGenerator.GeneratePrototype(bt as DelegateType, currentParameter));
}
}
else if (ms.Definition is DMethod)
{
return(VDServerCompletionDataGenerator.GeneratePrototype(ms.Definition as DMethod, isInTemplateArgInsight, currentParameter));
}
}
else if (t is TemplateIntermediateType)
{
return(VDServerCompletionDataGenerator.GeneratePrototype(t as TemplateIntermediateType, currentParameter));
}
return(null);
}
/// <summary>
/// http://dlang.org/expression.html#IsExpression
/// </summary>
public ISemantic E(IsExpression isExpression)
{
if (!eval)
{
return(new PrimitiveType(DTokens.Bool));
}
bool retTrue = false;
if (isExpression.TestedType != null)
{
var typeToCheck = DResolver.StripAliasSymbol(TypeDeclarationResolver.ResolveSingle(isExpression.TestedType, ctxt));
if (typeToCheck != null)
{
// case 1, 4
if (isExpression.TypeSpecialization == null && isExpression.TypeSpecializationToken == 0)
{
retTrue = typeToCheck != null;
}
// The probably most frequented usage of this expression
else if (string.IsNullOrEmpty(isExpression.TypeAliasIdentifier))
{
retTrue = evalIsExpression_NoAlias(isExpression, typeToCheck);
}
else
{
retTrue = evalIsExpression_WithAliases(isExpression, typeToCheck);
}
}
}
return(new PrimitiveValue(DTokens.Bool, retTrue?1:0, isExpression));
}
ISemantic E(PostfixExpression ex)
{
if (ex is PostfixExpression_MethodCall)
{
return(E((PostfixExpression_MethodCall)ex, !ctxt.Options.HasFlag(ResolutionOptions.ReturnMethodReferencesOnly)));
}
var foreExpr = E(ex.PostfixForeExpression);
if (foreExpr is AliasedType)
{
foreExpr = DResolver.StripAliasSymbol((AbstractType)foreExpr);
}
if (foreExpr == null)
{
if (eval)
{
return(null);
}
else
{
ctxt.LogError(new NothingFoundError(ex.PostfixForeExpression));
return(null);
}
}
if (ex is PostfixExpression_Access)
{
var r = E((PostfixExpression_Access)ex, foreExpr, true);
ctxt.CheckForSingleResult(r, ex);
return(r != null && r.Length != 0 ? r[0] : null);
}
else if (ex is PostfixExpression_Increment)
{
return(E((PostfixExpression_Increment)ex, foreExpr));
}
else if (ex is PostfixExpression_Decrement)
{
return(E((PostfixExpression_Decrement)foreExpr));
}
// myArray[0]; myArray[0..5];
// opIndex/opSlice ?
if (foreExpr is MemberSymbol)
{
foreExpr = DResolver.StripMemberSymbols((AbstractType)foreExpr);
}
if (ex is PostfixExpression_Slice)
{
return(E((PostfixExpression_Slice)ex, foreExpr));
}
else if (ex is PostfixExpression_Index)
{
return(E((PostfixExpression_Index)ex, foreExpr));
}
return(null);
}
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 TooltipInformation Generate(AbstractType t, int currentParameter = -1, bool isInTemplateArgInsight = false)
{
var ms = t as MemberSymbol;
if (ms != null)
{
if (ms.Definition is DVariable)
{
var bt = DResolver.StripAliasSymbol(ms.Base);
if (bt is DelegateType)
{
return(TooltipInfoGenerator.Generate(bt as DelegateType, currentParameter));
}
}
else if (ms.Definition is DMethod)
{
return(TooltipInfoGenerator.Generate(ms.Definition as DMethod, isInTemplateArgInsight, currentParameter));
}
}
else if (t is TemplateIntermediateType)
{
return(Generate(t as TemplateIntermediateType, currentParameter));
}
return(new TooltipInformation());
}
void _th(object pcl_shared)
{
var pcl = (ParseCacheList)pcl_shared;
var ctxt = new ResolverContextStack(pcl, new ResolverContext {
ScopedBlock = ast
});
// Make it as most performing as possible by avoiding unnecessary base types.
// Aliases should be analyzed deeper though.
ctxt.CurrentContext.ContextDependentOptions |=
ResolutionOptions.StopAfterFirstOverloads |
ResolutionOptions.DontResolveBaseTypes | //TODO: Exactly find out which option can be enabled here. Resolving variables' types is needed sometimes - but only, when highlighting a variable reference is wanted explicitly.
ResolutionOptions.NoTemplateParameterDeduction |
ResolutionOptions.ReturnMethodReferencesOnly;
ISyntaxRegion sr = null;
int i = 0;
while (curQueueOffset < queueCount)
{
// Avoid race condition runtime errors
lock (_lockObject)
{
i = curQueueOffset;
curQueueOffset++;
}
// Resolve gotten syntax object
sr = q[i];
var sb = ctxt.CurrentContext.ScopedBlock;
ctxt.CurrentContext.ScopedBlock = DResolver.SearchBlockAt(
sb == null || sr.Location <sb.BlockStartLocation || sr.EndLocation> sb.EndLocation ? ast : sb,
sr.Location,
out ctxt.CurrentContext.ScopedStatement);
if (sr is PostfixExpression_Access)
{
HandleAccessExpressions((PostfixExpression_Access)sr, ctxt);
}
else
{
AbstractType t = null;
if (sr is IExpression)
{
t = DResolver.StripAliasSymbol(Evaluation.EvaluateType((IExpression)sr, ctxt));
}
else if (sr is ITypeDeclaration)
{
t = DResolver.StripAliasSymbol(TypeDeclarationResolver.ResolveSingle((ITypeDeclaration)sr, ctxt));
}
// Enter into the result list
HandleResult(sr, t);
}
}
}
ISemantic E(NewExpression nex)
{
// http://www.d-programming-language.org/expression.html#NewExpression
ISemantic[] possibleTypes = null;
if (nex.Type is IdentifierDeclaration)
{
possibleTypes = TypeDeclarationResolver.Resolve((IdentifierDeclaration)nex.Type, ctxt, filterForTemplateArgs: false);
}
else
{
possibleTypes = TypeDeclarationResolver.Resolve(nex.Type, ctxt);
}
var ctors = new Dictionary <DMethod, TemplateIntermediateType>();
if (possibleTypes == null)
{
return(null);
}
foreach (var t in possibleTypes)
{
var ct = DResolver.StripAliasSymbol(t as AbstractType) as TemplateIntermediateType;
if (ct != null &&
!ct.Definition.ContainsAttribute(DTokens.Abstract))
{
foreach (var ctor in GetConstructors(ct))
{
ctors.Add(ctor, ct);
}
}
}
MemberSymbol finalCtor = null;
var kvArray = ctors.ToArray();
/*
* TODO: Determine argument types and filter out ctor overloads.
*/
if (kvArray.Length != 0)
{
finalCtor = new MemberSymbol(kvArray[0].Key, kvArray[0].Value, nex);
}
else if (possibleTypes.Length != 0)
{
return(AbstractType.Get(possibleTypes[0]));
}
return(finalCtor);
}
public void EponymousTemplates()
{
var ctxt = ResolutionTests.CreateDefCtxt(@"module B;
alias Tuple(T...) = T;
alias Tup = Tuple!(int, float, string);
enum isIntOrFloat(F) = is(F == int) || is(F == float);
");
IExpression x;
ISymbolValue v;
AbstractType t;
x = DParser.ParseExpression("isIntOrFloat!(Tup[0])");
v = Evaluation.EvaluateValue(x, ctxt);
Assert.That(v, Is.TypeOf(typeof(PrimitiveValue)));
Assert.That((v as PrimitiveValue).Value, Is.Not.EqualTo(0m));
DToken tk;
var td = DParser.ParseBasicType("Tuple!(int, float, string)", out tk);
//t = TypeDeclarationResolver.ResolveSingle (td, ctxt);
//Assert.That (t, Is.TypeOf(typeof(MemberSymbol)));
//Assert.That ((t as MemberSymbol).Base, Is.TypeOf(typeof(DTuple)));
x = DParser.ParseExpression("Tup[0]");
t = ExpressionTypeEvaluation.EvaluateType(x, ctxt);
Assert.That(t, Is.TypeOf(typeof(PrimitiveType)));
x = DParser.ParseExpression("Tup[1]");
t = ExpressionTypeEvaluation.EvaluateType(x, ctxt);
Assert.That(t, Is.TypeOf(typeof(PrimitiveType)));
x = DParser.ParseExpression("Tup[2]");
t = DResolver.StripAliasSymbol(ExpressionTypeEvaluation.EvaluateType(x, ctxt));
Assert.That(t, Is.TypeOf(typeof(ArrayType)));
x = DParser.ParseExpression("isIntOrFloat!int");
v = Evaluation.EvaluateValue(x, ctxt);
Assert.That(v, Is.TypeOf(typeof(PrimitiveValue)));
Assert.That((v as PrimitiveValue).Value, Is.Not.EqualTo(0m));
x = DParser.ParseExpression("isIntOrFloat!float");
v = Evaluation.EvaluateValue(x, ctxt);
Assert.That(v, Is.TypeOf(typeof(PrimitiveValue)));
Assert.That((v as PrimitiveValue).Value, Is.Not.EqualTo(0m));
x = DParser.ParseExpression("isIntOrFloat!string");
v = Evaluation.EvaluateValue(x, ctxt);
Assert.That(v, Is.TypeOf(typeof(PrimitiveValue)));
Assert.That((v as PrimitiveValue).Value, Is.EqualTo(0m));
}
public static AbstractType ResolveTraitArgument(ResolutionContext ctxt, TraitsArgument arg)
{
if (arg.Type != null)
{
return(TypeDeclarationResolver.ResolveSingle(arg.Type, ctxt));
}
else if (arg.AssignExpression != null)
{
return(DResolver.StripAliasSymbol(EvaluateType(arg.AssignExpression, ctxt)));
}
else
{
return(null);
}
}
AbstractType E(TraitsArgument arg, TraitsExpression te)
{
if (arg.Type != null)
{
return(TypeDeclarationResolver.ResolveSingle(arg.Type, ctxt));
}
else if (arg.AssignExpression != null)
{
return(DResolver.StripAliasSymbol(EvaluateType(arg.AssignExpression, ctxt)));
}
else
{
EvalError(te, "Argument must be a type or an expression!");
return(null);
}
}
AbstractType EvalForeExpression(PostfixExpression ex)
{
var foreExpr = ex.PostfixForeExpression != null?ex.PostfixForeExpression.Accept(this) : null;
if (foreExpr is AliasedType)
{
foreExpr = DResolver.StripAliasSymbol(foreExpr);
}
if (foreExpr == null)
{
ctxt.LogError(new NothingFoundError(ex.PostfixForeExpression));
}
return(foreExpr);
}
public static ArrayType GetStringType(ResolutionContext ctxt, LiteralSubformat fmt = LiteralSubformat.Utf8)
{
ArrayType _t = null;
if (ctxt != null)
{
var obj = ctxt.ParseCache.LookupModuleName("object").FirstOrDefault();
if (obj != null)
{
string strType = fmt == LiteralSubformat.Utf32 ? "dstring" :
fmt == LiteralSubformat.Utf16 ? "wstring" :
"string";
var strNode = obj[strType];
if (strNode != null)
{
foreach (var n in strNode)
{
_t = DResolver.StripAliasSymbol(TypeDeclarationResolver.HandleNodeMatch(n, ctxt)) as ArrayType;
if (_t != null)
{
break;
}
}
}
}
}
if (_t == null)
{
var ch = fmt == LiteralSubformat.Utf32 ? DTokens.Dchar :
fmt == LiteralSubformat.Utf16 ? DTokens.Wchar : DTokens.Char;
_t = new ArrayType(new PrimitiveType(ch, DTokens.Immutable),
new ArrayDecl
{
ValueType = new MemberFunctionAttributeDecl(DTokens.Immutable)
{
InnerType = new DTokenDeclaration(ch)
}
});
}
return(_t);
}
public bool HandleDecl(TemplateTypeParameter p, ITypeDeclaration td, ISemantic rr)
{
if (td is IdentifierDeclaration)
{
return(HandleDecl(p, (IdentifierDeclaration)td, rr));
}
//HACK Ensure that no information gets lost by using this function
// -- getting a value but requiring an abstract type and just extract it from the value - is this correct behaviour?
var at = DResolver.StripAliasSymbol(AbstractType.Get(rr));
if (td is ArrayDecl)
{
return(HandleDecl(p, (ArrayDecl)td, DResolver.StripMemberSymbols(at) as AssocArrayType));
}
else if (td is DTokenDeclaration)
{
return(HandleDecl((DTokenDeclaration)td, at));
}
else if (td is DelegateDeclaration)
{
return(HandleDecl(p, (DelegateDeclaration)td, DResolver.StripMemberSymbols(at) as DelegateType));
}
else if (td is PointerDecl)
{
return(HandleDecl(p, (PointerDecl)td, DResolver.StripMemberSymbols(at) as PointerType));
}
else if (td is MemberFunctionAttributeDecl)
{
return(HandleDecl(p, (MemberFunctionAttributeDecl)td, at));
}
else if (td is TypeOfDeclaration)
{
return(HandleDecl((TypeOfDeclaration)td, at));
}
else if (td is VectorDeclaration)
{
return(HandleDecl((VectorDeclaration)td, at));
}
else if (td is TemplateInstanceExpression)
{
return(HandleDecl(p, (TemplateInstanceExpression)td, at));
}
return(false);
}
public void AliasedTypeTuple()
{
var ctxt = ResolutionTests.CreateDefCtxt(@"module A;
template Tuple(T...) { alias Tuple = T; }
alias Tup = Tuple!(int, float, string);
template isIntOrFloat(T)
{
static if (is(T == int) || is(T == float))
enum isIntOrFloat = true;
else
enum isIntOrFloat = false;
}
");
IExpression x;
ISymbolValue v;
AbstractType t;
x = DParser.ParseExpression("Tup[2]");
t = DResolver.StripAliasSymbol(ExpressionTypeEvaluation.EvaluateType(x, ctxt));
Assert.That(t, Is.TypeOf(typeof(ArrayType)));
x = DParser.ParseExpression("isIntOrFloat!(Tup[2])");
v = Evaluation.EvaluateValue(x, ctxt);
Assert.That(v, Is.TypeOf(typeof(PrimitiveValue)));
Assert.That((v as PrimitiveValue).Value, Is.EqualTo(0m));
x = DParser.ParseExpression("Tup[0]");
t = ExpressionTypeEvaluation.EvaluateType(x, ctxt);
Assert.That(t, Is.TypeOf(typeof(PrimitiveType)));
x = DParser.ParseExpression("Tup[1]");
t = ExpressionTypeEvaluation.EvaluateType(x, ctxt);
Assert.That(t, Is.TypeOf(typeof(PrimitiveType)));
x = DParser.ParseExpression("isIntOrFloat!(Tup[0])");
v = Evaluation.EvaluateValue(x, ctxt);
Assert.That(v, Is.TypeOf(typeof(PrimitiveValue)));
Assert.That((v as PrimitiveValue).Value, Is.Not.EqualTo(0m));
}
protected override void BuildCompletionDataInternal(IEditorData Editor, char enteredChar)
{
ctxt = ResolutionContext.Create(Editor.ParseCache, new ConditionalCompilationFlags(Editor), ScopedBlock, ScopedStatement);
ctxt.CurrentContext.ContextDependentOptions |= ResolutionOptions.ReturnMethodReferencesOnly;
var ex = AccessExpression.AccessExpression == null ? AccessExpression.PostfixForeExpression : AccessExpression;
var r = DResolver.StripAliasSymbol(Evaluation.EvaluateType(ex, ctxt));
if (r == null) //TODO: Add after-space list creation when an unbound . (Dot) was entered which means to access the global scope
{
return;
}
BuildCompletionData(r, ScopedBlock);
if (CompletionOptions.Instance.ShowUFCSItems && (MemberFilter & MemberFilter.Methods) != 0 &&
!(r is UserDefinedType || r is PrimitiveType || r is PackageSymbol || r is ModuleSymbol))
{
UFCSCompletionProvider.Generate(r, ctxt, Editor, CompletionDataGenerator);
}
}
protected override void BuildCompletionDataInternal(IEditorData Editor, char enteredChar)
{
ed = Editor;
ctxt = ResolutionContext.Create(Editor.ParseCache, new ConditionalCompilationFlags(Editor), ScopedBlock, ScopedStatement);
ctxt.CurrentContext.ContextDependentOptions |= ResolutionOptions.ReturnMethodReferencesOnly;
AbstractType t;
if (AccessExpression is IExpression)
{
t = ExpressionTypeEvaluation.EvaluateType(AccessExpression as IExpression, ctxt);
}
else if (AccessExpression is ITypeDeclaration)
{
t = TypeDeclarationResolver.ResolveSingle(AccessExpression as ITypeDeclaration, ctxt);
}
else
{
return;
}
t = DResolver.StripAliasSymbol(t);
if (t == null) //TODO: Add after-space list creation when an unbound . (Dot) was entered which means to access the global scope
{
return;
}
isVariableInstance = false;
if (t.DeclarationOrExpressionBase is ITypeDeclaration)
{
isVariableInstance |= (t.DeclarationOrExpressionBase as ITypeDeclaration).ExpressesVariableAccess;
}
t.Accept(this);
}
public static AbstractType[] GetUnfilteredMethodOverloads(IExpression foreExpression, ResolutionContext ctxt, IExpression supExpression = null)
{
AbstractType[] overloads = null;
if (foreExpression is TemplateInstanceExpression)
{
overloads = Evaluation.GetOverloads(foreExpression as TemplateInstanceExpression, ctxt, null);
}
else if (foreExpression is IdentifierExpression)
{
overloads = Evaluation.GetOverloads(foreExpression as IdentifierExpression, ctxt, false);
}
else if (foreExpression is PostfixExpression_Access)
{
overloads = Evaluation.GetAccessedOverloads((PostfixExpression_Access)foreExpression, ctxt, null, false);
}
else if (foreExpression is TokenExpression)
{
overloads = GetResolvedConstructorOverloads((TokenExpression)foreExpression, ctxt);
}
else
{
overloads = new[] { Evaluation.EvaluateType(foreExpression, ctxt) }
};
var l = new List <AbstractType>();
bool staticOnly = true;
foreach (var ov in DResolver.StripAliasSymbols(overloads))
{
var t = ov;
if (ov is MemberSymbol)
{
var ms = ov as MemberSymbol;
if (ms.Definition is Dom.DMethod)
{
l.Add(ms);
continue;
}
staticOnly = false;
t = DResolver.StripAliasSymbol(ms.Base);
}
if (t is TemplateIntermediateType)
{
var tit = t as TemplateIntermediateType;
var m = TypeDeclarationResolver.HandleNodeMatches(
GetOpCalls(tit, staticOnly), ctxt,
null, supExpression ?? foreExpression);
/*
* On structs, there must be a default () constructor all the time.
* If there are (other) constructors in structs, the explicit member initializer constructor is not
* provided anymore. This will be handled in the GetConstructors() method.
* If there are opCall overloads, canCreateeExplicitStructCtor overrides the ctor existence check in GetConstructors()
* and enforces that the explicit ctor will not be generated.
* An opCall overload with no parameters supersedes the default ctor.
*/
var canCreateExplicitStructCtor = m == null || m.Length == 0;
if (!canCreateExplicitStructCtor)
{
l.AddRange(m);
}
m = TypeDeclarationResolver.HandleNodeMatches(
GetConstructors(tit, canCreateExplicitStructCtor), ctxt,
null, supExpression ?? foreExpression);
if (m != null && m.Length != 0)
{
l.AddRange(m);
}
}
else
{
l.Add(ov);
}
}
return(l.ToArray());
}
bool HandleAliasThisDeclarations(TemplateIntermediateType tit, MemberFilter vis)
{
bool pop;
var ch = tit.Definition [DVariable.AliasThisIdentifierHash];
if (ch != null)
{
foreach (DVariable aliasDef in ch)
{
if (MatchesCompilationConditions(aliasDef) ||
aliasDef.Type == null)
{
continue;
}
pop = ctxt.ScopedBlock != tit.Definition;
if (pop)
{
ctxt.PushNewScope(tit.Definition);
}
// Resolve the aliased symbol and expect it to be a member symbol(?).
//TODO: Check if other cases are allowed as well!
var aliasedSymbol = DResolver.StripAliasSymbol(TypeDeclarationResolver.ResolveSingle(aliasDef.Type, ctxt));
var aliasedMember = aliasedSymbol as MemberSymbol;
if (pop)
{
ctxt.Pop();
}
if (aliasedMember == null)
{
if (aliasedSymbol != null)
{
ctxt.LogError(aliasDef, "Aliased type from 'alias this' definition is expected to be a type instance, not " + aliasedSymbol.ToString() + "!");
}
continue;
}
/*
* The aliased member's type can be everything!
*/
aliasedSymbol = aliasedMember.Base;
foreach (var statProp in StaticProperties.ListProperties(aliasedSymbol))
{
if (HandleItem(statProp))
{
return(true);
}
}
/** TODO: Visit ufcs recommendations and other things that
* become added in e.g. MemberCompletionProvider
*/
var tit_ = aliasedSymbol as TemplateIntermediateType;
if (tit_ != null)
{
pop = !ctxt.ScopedBlockIsInNodeHierarchy(tit_.Definition);
if (pop)
{
ctxt.PushNewScope(tit_.Definition);
}
ctxt.CurrentContext.IntroduceTemplateParameterTypes(tit_);
var r = DeepScanClass(tit_, vis, true);
if (pop)
{
ctxt.Pop();
}
else
{
ctxt.CurrentContext.RemoveParamTypesFromPreferredLocals(tit_);
}
if (r)
{
return(true);
}
}
}
}
return(false);
}
ISemantic E(PostfixExpression_MethodCall call, bool returnBaseTypeOnly = true)
{
// Deduce template parameters later on
AbstractType[] baseExpression;
ISymbolValue baseValue;
TemplateInstanceExpression tix;
GetRawCallOverloads(call, out baseExpression, out baseValue, out tix);
var methodOverloads = new List <AbstractType>();
#region Search possible methods, opCalls or delegates that could be called
bool requireStaticItems = true; //TODO: What if there's an opCall and a foreign method at the same time? - and then this variable would be bullshit
IEnumerable <AbstractType> scanResults = DResolver.StripAliasSymbols(baseExpression);
var nextResults = new List <AbstractType>();
while (scanResults != null)
{
foreach (var b in scanResults)
{
if (b is MemberSymbol)
{
var mr = (MemberSymbol)b;
if (mr.Definition is DMethod)
{
methodOverloads.Add(mr);
continue;
}
else if (mr.Definition is DVariable)
{
// If we've got a variable here, get its base type/value reference
if (eval)
{
var dgVal = ValueProvider[(DVariable)mr.Definition] as DelegateValue;
if (dgVal != null)
{
nextResults.Add(dgVal.Definition);
continue;
}
else
{
EvalError(call, "Variable must be a delegate, not anything else", mr);
return(null);
}
}
else
{
var bt = DResolver.StripAliasSymbol(mr.Base ?? TypeDeclarationResolver.ResolveSingle(mr.Definition.Type, ctxt));
// Must be of type delegate
if (bt is DelegateType)
{
//TODO: Ensure that there's no further overload - inform the user elsewise
if (returnBaseTypeOnly)
{
return(bt);
}
else
{
return(new MemberSymbol(mr.Definition, bt, mr.DeclarationOrExpressionBase));
}
}
else
{
/*
* If mr.Node is not a method, so e.g. if it's a variable
* pointing to a delegate
*
* class Foo
* {
* string opCall() { return "asdf"; }
* }
*
* Foo f=new Foo();
* f(); -- calls opCall, opCall is not static
*/
nextResults.Add(bt);
requireStaticItems = false;
}
//TODO: Can other types work as function/are callable?
}
}
}
else if (b is DelegateType)
{
var dg = (DelegateType)b;
/*
* int a = delegate(x) { return x*2; } (12); // a is 24 after execution
* auto dg=delegate(x) {return x*3;};
* int b = dg(4);
*/
if (dg.IsFunctionLiteral)
{
methodOverloads.Add(dg);
}
else
{
// If it's just wanted to pass back the delegate's return type, skip the remaining parts of this method.
if (eval)
{
EvalError(call, "TODO", dg);
return(null);
}
//TODO
//if(returnBaseTypeOnly)
//TODO: Check for multiple definitions. Also, make a parameter-argument check to inform the user about wrong arguments.
return(dg);
}
}
else if (b is ClassType || b is StructType)
{
var tit = (TemplateIntermediateType)b;
/*
* auto a = MyStruct(); -- opCall-Overloads can be used
*/
var classDef = tit.Definition;
if (classDef == null)
{
continue;
}
foreach (var i in GetOpCalls(tit, requireStaticItems))
{
methodOverloads.Add(TypeDeclarationResolver.HandleNodeMatch(i, ctxt, b, call) as MemberSymbol);
}
/*
* Every struct can contain a default ctor:
*
* struct S { int a; bool b; }
*
* auto s = S(1,true); -- ok
* auto s2= new S(2,false); -- error, no constructor found!
*/
if (b is StructType && methodOverloads.Count == 0)
{
//TODO: Deduce parameters
return(b);
}
}
/*
* If the overload is a template, it quite exclusively means that we'll handle a method that is the only
* child inside a template + that is named as the template.
*/
else if (b is TemplateType)
{
methodOverloads.Add(b);
}
}
scanResults = nextResults.Count == 0 ? null : nextResults.ToArray();
nextResults.Clear();
}
#endregion
if (methodOverloads.Count == 0)
{
return(null);
}
// Get all arguments' types
var callArguments = new List <ISemantic>();
bool hasNonFinalArgs = false;
if (call.Arguments != null)
{
foreach (var arg in call.Arguments)
{
callArguments.Add(E(arg));
}
}
#region If explicit template type args were given, try to associate them with each overload
if (tix != null)
{
var args = TemplateInstanceHandler.PreResolveTemplateArgs(tix, ctxt, out hasNonFinalArgs);
var deducedOverloads = TemplateInstanceHandler.DeduceParamsAndFilterOverloads(methodOverloads, args, true, ctxt, hasNonFinalArgs);
methodOverloads.Clear();
if (deducedOverloads != null)
{
methodOverloads.AddRange(deducedOverloads);
}
}
#endregion
#region Filter by parameter-argument comparison
var argTypeFilteredOverloads = new List <AbstractType>();
bool hasHandledUfcsResultBefore = false;
foreach (var ov in methodOverloads)
{
if (ov is MemberSymbol)
{
var ms = ov as MemberSymbol;
var dm = ms.Definition as DMethod;
if (dm != null)
{
// In the case of an ufcs, insert the first argument into the CallArguments list
if (ms.IsUFCSResult && !hasHandledUfcsResultBefore)
{
callArguments.Insert(0, eval ? baseValue as ISemantic : ((MemberSymbol)baseExpression[0]).FirstArgument);
hasHandledUfcsResultBefore = true;
}
else if (!ms.IsUFCSResult && hasHandledUfcsResultBefore) // In the rare case of having a ufcs result occuring _after_ a normal member result, remove the initial arg again
{
callArguments.RemoveAt(0);
hasHandledUfcsResultBefore = false;
}
var deducedTypeDict = new DeducedTypeDictionary(ms);
if (dm.TemplateParameters != null)
{
foreach (var tpar in dm.TemplateParameters)
{
if (!deducedTypeDict.ContainsKey(tpar.NameHash))
{
deducedTypeDict[tpar.NameHash] = null;
}
}
}
var templateParamDeduction = new TemplateParameterDeduction(deducedTypeDict, ctxt);
int currentArg = 0;
bool add = true;
if (callArguments.Count > 0 || dm.Parameters.Count > 0)
{
for (int i = 0; i < dm.Parameters.Count; i++)
{
var paramType = dm.Parameters[i].Type;
// Handle the usage of tuples: Tuples may only be used as as-is, so not as an array, pointer or in a modified way..
if (paramType is IdentifierDeclaration &&
TryHandleMethodArgumentTuple(ref add, callArguments, dm, deducedTypeDict, i, ref currentArg))
{
continue;
}
else if (currentArg < callArguments.Count)
{
if (!templateParamDeduction.HandleDecl(null, paramType, callArguments[currentArg++]))
{
add = false;
break;
}
}
else
{
// If there are more parameters than arguments given, check if the param has default values
if (!(dm.Parameters[i] is DVariable) || (dm.Parameters[i] as DVariable).Initializer == null)
{
add = false;
break;
}
// Assume that all further method parameters do have default values - and don't check further parameters
break;
}
}
}
// If type params were unassigned, try to take the defaults
if (add && dm.TemplateParameters != null)
{
foreach (var tpar in dm.TemplateParameters)
{
if (deducedTypeDict[tpar.NameHash] == null)
{
add = templateParamDeduction.Handle(tpar, null);
if (!add)
{
if (hasNonFinalArgs)
{
deducedTypeDict[tpar.NameHash] = new TemplateParameterSymbol(tpar, null);
add = true;
}
else
{
break;
}
}
}
}
}
if (add && (deducedTypeDict.AllParamatersSatisfied || hasNonFinalArgs))
{
ms.DeducedTypes = deducedTypeDict.ToReadonly();
ctxt.CurrentContext.IntroduceTemplateParameterTypes(ms);
var bt = ms.Base ?? TypeDeclarationResolver.GetMethodReturnType(dm, ctxt);
ctxt.CurrentContext.RemoveParamTypesFromPreferredLocals(ms);
if (eval || !returnBaseTypeOnly)
{
argTypeFilteredOverloads.Add(ms.Base == null ? new MemberSymbol(dm, bt, ms.DeclarationOrExpressionBase, ms.DeducedTypes) : ms);
}
else
{
argTypeFilteredOverloads.Add(bt);
}
}
}
}
else if (ov is DelegateType)
{
var dg = (DelegateType)ov;
var bt = TypeDeclarationResolver.GetMethodReturnType(dg, ctxt);
//TODO: Param-Arg check
if (!eval || returnBaseTypeOnly)
{
argTypeFilteredOverloads.Add(bt);
}
else
{
argTypeFilteredOverloads.Add(new DelegateType(bt, dg.DeclarationOrExpressionBase as FunctionLiteral, dg.Parameters));
}
}
}
#endregion
if (eval)
{
// Convert ISemantic[] to ISymbolValue[]
var args = new List <ISymbolValue>(callArguments.Count);
foreach (var a in callArguments)
{
args.Add(a as ISymbolValue);
}
// Execute/Evaluate the variable contents etc.
return(TryDoCTFEOrGetValueRefs(argTypeFilteredOverloads.ToArray(), call.PostfixForeExpression, true, args.ToArray()));
}
else
{
// Check if one overload remains and return that one.
ctxt.CheckForSingleResult(argTypeFilteredOverloads.ToArray(), call);
return(argTypeFilteredOverloads.Count != 0 ? argTypeFilteredOverloads[0] : null);
}
}
ISemantic E(PostfixExpression_MethodCall call, bool returnBaseTypeOnly = true)
{
// Deduce template parameters later on
AbstractType[] baseExpression = null;
ISymbolValue baseValue = null;
TemplateInstanceExpression tix = null;
bool isUFCSFunction = false;
GetRawCallOverloads(call, out baseExpression, out baseValue, out tix, out isUFCSFunction);
var methodOverloads = new List <AbstractType>();
#region Search possible methods, opCalls or delegates that could be called
bool requireStaticItems = true; //TODO: What if there's an opCall and a foreign method at the same time? - and then this variable would be bullshit
IEnumerable <AbstractType> scanResults = DResolver.StripAliasSymbols(baseExpression);
var nextResults = new List <AbstractType>();
while (scanResults != null)
{
foreach (var b in scanResults)
{
if (b is MemberSymbol)
{
var mr = (MemberSymbol)b;
if (mr.Definition is DMethod)
{
methodOverloads.Add(mr);
continue;
}
else if (mr.Definition is DVariable)
{
// If we've got a variable here, get its base type/value reference
if (eval)
{
var dgVal = ValueProvider[(DVariable)mr.Definition] as DelegateValue;
if (dgVal != null)
{
nextResults.Add(dgVal.Definition);
continue;
}
else
{
throw new EvaluationException(call, "Variable must be a delegate, not anything else", mr);
}
}
else
{
var bt = DResolver.StripAliasSymbol(mr.Base ?? TypeDeclarationResolver.ResolveSingle(mr.Definition.Type, ctxt));
// Must be of type delegate
if (bt is DelegateType)
{
//TODO: Ensure that there's no further overload - inform the user elsewise
if (returnBaseTypeOnly)
{
return(bt);
}
else
{
return(new MemberSymbol(mr.Definition, bt, mr.DeclarationOrExpressionBase));
}
}
else
{
/*
* If mr.Node is not a method, so e.g. if it's a variable
* pointing to a delegate
*
* class Foo
* {
* string opCall() { return "asdf"; }
* }
*
* Foo f=new Foo();
* f(); -- calls opCall, opCall is not static
*/
nextResults.Add(bt);
requireStaticItems = false;
}
//TODO: Can other types work as function/are callable?
}
}
}
else if (b is DelegateType)
{
var dg = (DelegateType)b;
/*
* int a = delegate(x) { return x*2; } (12); // a is 24 after execution
* auto dg=delegate(x) {return x*3;};
* int b = dg(4);
*/
if (dg.IsFunctionLiteral)
{
methodOverloads.Add(dg);
}
else
{
// If it's just wanted to pass back the delegate's return type, skip the remaining parts of this method.
if (eval)
{
throw new EvaluationException(call, "TODO", dg);
}
//TODO
//if(returnBaseTypeOnly)
//TODO: Check for multiple definitions. Also, make a parameter-argument check to inform the user about wrong arguments.
return(dg);
}
}
else if (b is ClassType)
{
/*
* auto a = MyStruct(); -- opCall-Overloads can be used
*/
var classDef = ((ClassType)b).Definition;
if (classDef == null)
{
continue;
}
foreach (var i in classDef)
{
if (i.Name == "opCall" && i is DMethod && (!requireStaticItems || (i as DNode).IsStatic))
{
methodOverloads.Add(TypeDeclarationResolver.HandleNodeMatch(i, ctxt, b, call) as MemberSymbol);
}
}
}
/*
* Every struct can contain a default ctor:
*
* struct S { int a; bool b; }
*
* auto s = S(1,true); -- ok
* auto s2= new S(2,false); -- error, no constructor found!
*/
else if (b is StructType && methodOverloads.Count == 0)
{
//TODO: Deduce parameters
return(b);
}
/*
* If the overload is a template, it quite exclusively means that we'll handle a method that is the only
* child inside a template + that is named as the template.
*/
else if (b is TemplateType &&
ImplicitTemplateProperties.ContainsEquallyNamedChildrenOnly(((TemplateType)b).Definition))
{
methodOverloads.Add(b);
}
}
scanResults = nextResults.Count == 0 ? null : nextResults.ToArray();
nextResults.Clear();
}
#endregion
if (methodOverloads.Count == 0)
{
return(null);
}
// Get all arguments' types
var callArguments = new List <ISemantic>();
// If it's sure that we got a ufcs call here, add the base expression's type as first argument type
if (isUFCSFunction)
{
callArguments.Add(eval ? (ISemantic)baseValue : ((MemberSymbol)baseExpression[0]).Base);
}
if (call.Arguments != null)
{
foreach (var arg in call.Arguments)
{
callArguments.Add(E(arg));
}
}
#region Deduce template parameters and filter out unmatching overloads
// First add optionally given template params
// http://dlang.org/template.html#function-templates
var tplParamDeductionArguments = tix == null ?
new List <ISemantic>() :
TemplateInstanceHandler.PreResolveTemplateArgs(tix, ctxt);
// Then add the arguments[' member types]
foreach (var arg in callArguments)
{
if (arg is VariableValue)
{
tplParamDeductionArguments.Add(ValueProvider[((VariableValue)arg).Variable]);
}
else if (arg is AbstractType)
{
tplParamDeductionArguments.Add(DResolver.StripMemberSymbols((AbstractType)arg));
}
else
{
tplParamDeductionArguments.Add(arg);
}
}
var templateParamFilteredOverloads = TemplateInstanceHandler.DeduceParamsAndFilterOverloads(
methodOverloads,
tplParamDeductionArguments.Count > 0 ? tplParamDeductionArguments.ToArray() : null,
true, ctxt);
#endregion
#region Filter by parameter-argument comparison
var argTypeFilteredOverloads = new List <AbstractType>();
if (templateParamFilteredOverloads != null)
{
foreach (var ov in templateParamFilteredOverloads)
{
if (ov is MemberSymbol)
{
var ms = (MemberSymbol)ov;
var dm = ms.Definition as DMethod;
bool add = false;
if (dm != null)
{
ctxt.CurrentContext.IntroduceTemplateParameterTypes(ms);
add = false;
if (callArguments.Count == 0 && dm.Parameters.Count == 0)
{
add = true;
}
else
{
for (int i = 0; i < dm.Parameters.Count; i++)
{
var paramType = TypeDeclarationResolver.ResolveSingle(dm.Parameters[i].Type, ctxt);
// TODO: Expression tuples & variable argument lengths
if (i >= callArguments.Count ||
!ResultComparer.IsImplicitlyConvertible(callArguments[i], paramType, ctxt))
{
continue;
}
add = true;
}
}
if (add)
{
var bt = ms.Base ?? TypeDeclarationResolver.GetMethodReturnType(dm, ctxt);
if (returnBaseTypeOnly)
{
argTypeFilteredOverloads.Add(bt);
}
else
{
argTypeFilteredOverloads.Add(ms.Base == null ? new MemberSymbol(dm, bt, ms.DeclarationOrExpressionBase, ms.DeducedTypes) : ms);
}
}
ctxt.CurrentContext.RemoveParamTypesFromPreferredLocals(ms);
}
}
else if (ov is DelegateType)
{
var dg = (DelegateType)ov;
var bt = TypeDeclarationResolver.GetMethodReturnType(dg, ctxt);
//TODO: Param-Arg check
if (returnBaseTypeOnly)
{
argTypeFilteredOverloads.Add(bt);
}
else
{
argTypeFilteredOverloads.Add(new DelegateType(bt, dg.DeclarationOrExpressionBase as FunctionLiteral, dg.Parameters));
}
}
}
}
#endregion
if (eval)
{
// Convert ISemantic[] to ISymbolValue[]
var args = new List <ISymbolValue>(callArguments.Count);
foreach (var a in callArguments)
{
args.Add(a as ISymbolValue);
}
// Execute/Evaluate the variable contents etc.
return(TryDoCTFEOrGetValueRefs(argTypeFilteredOverloads.ToArray(), call.PostfixForeExpression, true, args.ToArray()));
}
else
{
// Check if one overload remains and return that one.
ctxt.CheckForSingleResult(argTypeFilteredOverloads.ToArray(), call);
return(argTypeFilteredOverloads != null && argTypeFilteredOverloads.Count != 0 ?
argTypeFilteredOverloads[0] : null);
}
}
public static List <AbstractType> EvalMethodCall(AbstractType[] baseExpression, ISymbolValue baseValue, TemplateInstanceExpression tix,
ResolutionContext ctxt,
PostfixExpression_MethodCall call, out List <ISemantic> callArguments, out ISymbolValue delegateValue,
bool returnBaseTypeOnly, AbstractSymbolValueProvider ValueProvider = null)
{
//TODO: Refactor this crap!
delegateValue = null;
callArguments = null;
var methodOverloads = new List <AbstractType>();
#region Search possible methods, opCalls or delegates that could be called
bool requireStaticItems = true; //TODO: What if there's an opCall and a foreign method at the same time? - and then this variable would be bullshit
IEnumerable <AbstractType> scanResults = DResolver.StripAliasSymbols(baseExpression);
var nextResults = new List <AbstractType>();
while (scanResults != null)
{
foreach (var b in scanResults)
{
if (b is TemplateParameterSymbol)
{
nextResults.Add((b as TemplateParameterSymbol).Base);
}
else if (b is MemberSymbol)
{
var mr = (MemberSymbol)b;
if (mr.Definition is DMethod)
{
methodOverloads.Add(mr);
continue;
}
else if (mr.Definition is DVariable)
{
// If we've got a variable here, get its base type/value reference
if (ValueProvider != null)
{
var dgVal = ValueProvider[(DVariable)mr.Definition] as DelegateValue;
if (dgVal != null)
{
nextResults.Add(dgVal.Definition);
continue;
}
else
{
ValueProvider.LogError(call, "Variable must be a delegate, not anything else");
return(null);
}
}
else
{
var bt = DResolver.StripAliasSymbol(mr.Base ?? TypeDeclarationResolver.ResolveSingle(mr.Definition.Type, ctxt));
// Must be of type delegate
if (bt is DelegateType)
{
var ret = HandleCallDelegateType(ValueProvider, bt as DelegateType, methodOverloads, returnBaseTypeOnly);
if (ret is ISymbolValue)
{
delegateValue = ret as ISymbolValue;
return(null);
}
else if (ret is AbstractType)
{
return new List <AbstractType> {
ret as AbstractType
}
}
;
}
else
{
/*
* If mr.Node is not a method, so e.g. if it's a variable
* pointing to a delegate
*
* class Foo
* {
* string opCall() { return "asdf"; }
* }
*
* Foo f=new Foo();
* f(); -- calls opCall, opCall is not static
*/
nextResults.Add(bt);
requireStaticItems = false;
}
//TODO: Can other types work as function/are callable?
}
}
}
else if (b is DelegateType)
{
var ret = HandleCallDelegateType(ValueProvider, b as DelegateType, methodOverloads, returnBaseTypeOnly);
if (ret is ISymbolValue)
{
delegateValue = ret as ISymbolValue;
return(null);
}
else if (ret is AbstractType)
{
return new List <AbstractType> {
ret as AbstractType
}
}
;
}
else if (b is ClassType || b is StructType)
{
var tit = (TemplateIntermediateType)b;
/*
* auto a = MyStruct(); -- opCall-Overloads can be used
*/
var classDef = tit.Definition;
if (classDef == null)
{
continue;
}
foreach (var i in ExpressionTypeEvaluation.GetOpCalls(tit, requireStaticItems))
{
methodOverloads.Add(TypeDeclarationResolver.HandleNodeMatch(i, ctxt, b, call) as MemberSymbol);
}
/*
* Every struct can contain a default ctor:
*
* struct S { int a; bool b; }
*
* auto s = S(1,true); -- ok
* auto s2= new S(2,false); -- error, no constructor found!
*/
if (b is StructType && methodOverloads.Count == 0)
{
//TODO: Deduce parameters
return(new List <AbstractType> {
b
});
}
}
/*
* If the overload is a template, it quite exclusively means that we'll handle a method that is the only
* child inside a template + that is named as the template.
*/
else if (b is TemplateType)
{
methodOverloads.Add(b);
}
}
scanResults = nextResults.Count == 0 ? null : nextResults.ToArray();
nextResults.Clear();
}
#endregion
if (methodOverloads.Count == 0)
{
return(null);
}
// Get all arguments' types
callArguments = new List <ISemantic>();
bool hasNonFinalArgs = false;
if (call.Arguments != null)
{
if (ValueProvider != null)
{
foreach (var arg in call.Arguments)
{
callArguments.Add(arg != null ? Evaluation.EvaluateValue(arg, ValueProvider) : null);
}
}
else
{
foreach (var arg in call.Arguments)
{
callArguments.Add(arg != null ? ExpressionTypeEvaluation.EvaluateType(arg, ctxt) : null);
}
}
}
#region If explicit template type args were given, try to associate them with each overload
if (tix != null)
{
var args = TemplateInstanceHandler.PreResolveTemplateArgs(tix, ctxt, out hasNonFinalArgs);
var deducedOverloads = TemplateInstanceHandler.DeduceParamsAndFilterOverloads(methodOverloads, args, true, ctxt, hasNonFinalArgs);
methodOverloads.Clear();
if (deducedOverloads != null)
{
methodOverloads.AddRange(deducedOverloads);
}
}
#endregion
#region Filter by parameter-argument comparison
var argTypeFilteredOverloads = new List <AbstractType>();
bool hasHandledUfcsResultBefore = false;
foreach (var ov in methodOverloads)
{
if (ov is MemberSymbol)
{
HandleDMethodOverload(ctxt, ValueProvider != null, baseValue, callArguments, returnBaseTypeOnly, hasNonFinalArgs, argTypeFilteredOverloads, ref hasHandledUfcsResultBefore, ov as MemberSymbol);
}
else if (ov is DelegateType)
{
var dg = ov as DelegateType;
var bt = dg.Base ?? TypeDeclarationResolver.GetMethodReturnType(dg, ctxt);
//TODO: Param-Arg check
if (returnBaseTypeOnly)
{
argTypeFilteredOverloads.Add(bt);
}
else
{
if (dg.Base == null)
{
if (dg.IsFunctionLiteral)
{
dg = new DelegateType(bt, dg.DeclarationOrExpressionBase as FunctionLiteral, dg.Parameters);
}
else
{
dg = new DelegateType(bt, dg.DeclarationOrExpressionBase as DelegateDeclaration, dg.Parameters);
}
}
argTypeFilteredOverloads.Add(new DelegateCallSymbol(dg, call));
}
}
}
#endregion
return(argTypeFilteredOverloads);
}
/// <summary>
/// Checks results for implicit type convertability
/// </summary>
public static bool IsImplicitlyConvertible(ISemantic resultToCheck, AbstractType targetType, ResolverContextStack ctxt = null)
{
var resToCheck = AbstractType.Get(resultToCheck);
// Initially remove aliases from results
var _r = DResolver.StripMemberSymbols(resToCheck);
if (_r == null)
{
return(IsEqual(resToCheck, targetType));
}
resToCheck = _r;
targetType = DResolver.StripAliasSymbol(targetType);
if (targetType is DSymbol)
{
var tpn = ((DSymbol)targetType).Definition as TemplateParameterNode;
if (tpn != null)
{
var par = tpn.Parent as DNode;
if (par != null && par.TemplateParameters != null)
{
var dedParam = new DeducedTypeDictionary {
ParameterOwner = par
};
foreach (var tp in par.TemplateParameters)
{
dedParam[tp.Name] = null;
}
return(new TemplateParameterDeduction(dedParam, ctxt).Handle(tpn.TemplateParameter, resToCheck));
}
}
}
_r = DResolver.StripMemberSymbols(targetType);
if (_r == null)
{
return(false);
}
targetType = _r;
if (resToCheck is PrimitiveType && targetType is PrimitiveType)
{
var sr1 = (PrimitiveType)resToCheck;
var sr2 = (PrimitiveType)targetType;
if (sr1.TypeToken == sr2.TypeToken && sr1.Modifier == sr2.Modifier)
{
return(true);
}
switch (sr2.TypeToken)
{
case DTokens.Int:
return(sr1.TypeToken == DTokens.Uint);
case DTokens.Uint:
return(sr1.TypeToken == DTokens.Int);
//TODO: Further types that can be converted into each other implicitly
}
}
else if (resToCheck is UserDefinedType && targetType is UserDefinedType)
{
return(IsImplicitlyConvertible((UserDefinedType)resToCheck, (UserDefinedType)targetType));
}
else if (resToCheck is DelegateType && targetType is DelegateType)
{
//TODO
}
else if (resToCheck is ArrayType && targetType is ArrayType)
{
var ar1 = (ArrayType)resToCheck;
var ar2 = (ArrayType)targetType;
// Key as well as value types must be matching!
var ar1_n = ar1.KeyType == null;
var ar2_n = ar2.KeyType == null;
if (ar1_n != ar2_n)
{
return(false);
}
if (ar1_n || IsImplicitlyConvertible(ar1.KeyType, ar2.KeyType, ctxt))
{
return(IsImplicitlyConvertible(ar1.Base, ar2.Base, ctxt));
}
}
else if (resToCheck is TypeTuple && targetType is TypeTuple)
{
return(true);
}
else if (resToCheck is ExpressionTuple && targetType is ExpressionTuple)
{
return(true);
}
/*else if (resultToCheck is ExpressionValueResult && targetType is ExpressionValue)
* {
* return ((ExpressionValueResult)resultToCheck).Value.Equals(((ExpressionValueResult)targetType).Value);
* }*/
// http://dlang.org/type.html
//TODO: Pointer to non-pointer / vice-versa checkability? -- Can it really be done implicitly?
return(false);
}
/// <summary>
/// Checks results for implicit type convertability
/// </summary>
public static bool IsImplicitlyConvertible(ISemantic resultToCheck, AbstractType targetType, ResolutionContext ctxt = null)
{
var resToCheck = AbstractType.Get(resultToCheck);
bool isVariable = resToCheck is MemberSymbol;
// Initially remove aliases from results
var _r = DResolver.StripMemberSymbols(resToCheck);
if (_r == null)
{
return(IsEqual(resToCheck, targetType));
}
resToCheck = _r;
targetType = DResolver.StripAliasSymbol(targetType);
if (targetType is DSymbol)
{
var tpn = ((DSymbol)targetType).Definition as TemplateParameter.Node;
if (tpn != null)
{
var par = tpn.Parent as DNode;
if (par != null && par.TemplateParameters != null)
{
var dedParam = new DeducedTypeDictionary(par);
return(new TemplateParameterDeduction(dedParam, ctxt).Handle(tpn.TemplateParameter, resToCheck));
}
}
}
_r = DResolver.StripMemberSymbols(targetType);
if (_r == null)
{
return(false);
}
targetType = _r;
if (resToCheck is PrimitiveType && targetType is PrimitiveType)
{
var sr1 = (PrimitiveType)resToCheck;
var sr2 = (PrimitiveType)targetType;
if (sr1.TypeToken == sr2.TypeToken /*&& sr1.Modifier == sr2.Modifier*/)
{
return(true);
}
return(ImplicitConvertabilityTable.Contains((sr2.TypeToken << 8) + sr1.TypeToken));
}
else if (resToCheck is UserDefinedType && targetType is UserDefinedType)
{
return(IsImplicitlyConvertible((UserDefinedType)resToCheck, (UserDefinedType)targetType));
}
else if (resToCheck is DelegateType && targetType is DelegateType)
{
return(IsEqual(resToCheck, targetType)); //TODO: Can non-equal delegates be converted into each other?
}
else if (resToCheck is ArrayType && targetType is ArrayType)
{
var ar1 = (ArrayType)resToCheck;
var ar2 = (ArrayType)targetType;
// Key as well as value types must be matching!
var ar1_n = ar1.KeyType == null;
var ar2_n = ar2.KeyType == null;
if (ar1_n != ar2_n)
{
return(false);
}
if (ar1_n || IsImplicitlyConvertible(ar1.KeyType, ar2.KeyType, ctxt))
{
return(IsImplicitlyConvertible(ar1.Base, ar2.Base, ctxt));
}
}
else if (resToCheck is DSymbol && targetType is DSymbol)
{
var r1 = resToCheck as DSymbol;
var r2 = targetType as DSymbol;
if (r1.Definition == r2.Definition)
{
//TODO: Compare template param deductions
return(true);
}
}
else if (resToCheck is DTuple && targetType is DTuple)
{
var tup1 = resToCheck as DTuple;
var tup2 = resToCheck as DTuple;
//TODO
return(true);
}
/*else if (resultToCheck is ExpressionValueResult && targetType is ExpressionValue)
* {
* return ((ExpressionValueResult)resultToCheck).Value.Equals(((ExpressionValueResult)targetType).Value);
* }*/
// http://dlang.org/type.html
//TODO: Pointer to non-pointer / vice-versa checkability? -- Can it really be done implicitly?
else if (!isVariable &&
resToCheck is ArrayType &&
targetType is PointerType && ((targetType = (targetType as PointerType).Base) is PrimitiveType) &&
DTokens.IsBasicType_Character((targetType as PrimitiveType).TypeToken))
{
return((resultToCheck as ArrayType).IsString);
}
return(false);
}
/// <summary>
/// Tries to resolve a static property's name.
/// Returns a result describing the theoretical member (".init"-%gt;MemberResult; ".typeof"->TypeResult etc).
/// Returns null if nothing was found.
/// </summary>
/// <param name="InitialResult"></param>
/// <returns></returns>
public static MemberSymbol TryResolveStaticProperties(
ISemantic InitialResult,
string propertyIdentifier,
ResolverContextStack ctxt = null,
bool Evaluate = false,
IdentifierDeclaration idContainter = null)
{
// If a pointer'ed type is given, take its base type
if (InitialResult is PointerType)
{
InitialResult = ((PointerType)InitialResult).Base;
}
if (InitialResult == null || InitialResult is ModuleSymbol)
{
return(null);
}
INode relatedNode = null;
if (InitialResult is DSymbol)
{
relatedNode = ((DSymbol)InitialResult).Definition;
}
#region init
if (propertyIdentifier == "init")
{
var prop_Init = new DVariable
{
Name = "init",
Description = "Initializer"
};
if (relatedNode != null)
{
if (!(relatedNode is DVariable))
{
prop_Init.Parent = relatedNode.Parent;
prop_Init.Type = new IdentifierDeclaration(relatedNode.Name);
}
else
{
prop_Init.Parent = relatedNode;
prop_Init.Initializer = (relatedNode as DVariable).Initializer;
prop_Init.Type = relatedNode.Type;
}
}
return(new MemberSymbol(prop_Init, DResolver.StripAliasSymbol(AbstractType.Get(InitialResult)), idContainter));
}
#endregion
#region sizeof
if (propertyIdentifier == "sizeof")
{
return(new MemberSymbol(new DVariable
{
Name = "sizeof",
Type = new DTokenDeclaration(DTokens.Int),
Initializer = new IdentifierExpression(4),
Description = "Size in bytes (equivalent to C's sizeof(type))"
}, new PrimitiveType(DTokens.Int), idContainter));
}
#endregion
#region alignof
if (propertyIdentifier == "alignof")
{
return(new MemberSymbol(new DVariable
{
Name = "alignof",
Type = new DTokenDeclaration(DTokens.Int),
Description = "Alignment size"
}, new PrimitiveType(DTokens.Int), idContainter));
}
#endregion
#region mangleof
if (propertyIdentifier == "mangleof")
{
return(new MemberSymbol(new DVariable
{
Name = "mangleof",
Type = new IdentifierDeclaration("string"),
Description = "String representing the ‘mangled’ representation of the type"
}, getStringType(ctxt), idContainter));
}
#endregion
#region stringof
if (propertyIdentifier == "stringof")
{
return(new MemberSymbol(new DVariable
{
Name = "stringof",
Type = new IdentifierDeclaration("string"),
Description = "String representing the source representation of the type"
}, getStringType(ctxt), idContainter));
}
#endregion
#region classinfo
else if (propertyIdentifier == "classinfo")
{
var tr = DResolver.StripMemberSymbols(AbstractType.Get(InitialResult)) as TemplateIntermediateType;
if (tr is ClassType || tr is InterfaceType)
{
var ci = new IdentifierDeclaration("TypeInfo_Class")
{
InnerDeclaration = new IdentifierDeclaration("object"),
ExpressesVariableAccess = true,
};
var ti = TypeDeclarationResolver.Resolve(ci, ctxt);
ctxt.CheckForSingleResult(ti, ci);
return(new MemberSymbol(new DVariable {
Name = "classinfo", Type = ci
}, ti != null && ti.Length != 0?ti[0]:null, idContainter));
}
}
#endregion
//TODO: Resolve the types of type-specific properties (floats, ints, arrays, assocarrays etc.)
return(null);
}