public override void Set(AbstractSymbolValueProvider vp, ISymbolValue value)
{
var oldV = vp[Variable];
if (oldV is ArrayValue)
{
var av = (ArrayValue)oldV;
//TODO: Immutability checks
if (av.IsString)
{
}
else
{
var at = av.RepresentedType as ArrayType;
var newElements = new ISymbolValue[av.Elements.Length + (ItemNumber<0 ? 1:0)];
av.Elements.CopyTo(newElements, 0);
if (!ResultComparer.IsImplicitlyConvertible(value.RepresentedType, at.ValueType))
throw new EvaluationException(BaseExpression, value.ToCode() + " must be implicitly convertible to the array's value type!", value);
// Add..
if (ItemNumber < 0)
av.Elements[av.Elements.Length - 1] = value;
else // or set the new value
av.Elements[ItemNumber] = value;
vp[Variable] = new ArrayValue(at, newElements);
}
}
else
throw new EvaluationException(BaseExpression, "Type of accessed item must be an array", oldV);
}
/// <summary>
/// http://dlang.org/operatoroverloading.html#Dispatch
/// Check for the existence of an opDispatch overload.
/// Important: Because static opDispatches are allowed as well, do check whether we can access non-static overloads from non-instance expressions or such
/// </summary>
public static IEnumerable<AbstractType> TryResolveFurtherIdViaOpDispatch (ResolutionContext ctxt, int nextIdentifierHash, UserDefinedType b, ISyntaxRegion typeBase = null)
{
// The usual SO prevention
if (nextIdentifierHash == opDispatchId || b == null)
yield break;
AbstractType[] overloads;
var opt = ctxt.CurrentContext.ContextDependentOptions;
// Look for opDispatch-Members inside b's Definition
using (ctxt.Push(b))
{
ctxt.CurrentContext.ContextDependentOptions = opt; // Mainly required for not resolving opDispatch's return type, as this will be performed later on in higher levels
overloads = TypeDeclarationResolver.ResolveFurtherTypeIdentifier(opDispatchId, b, ctxt, typeBase, false);
}
if (overloads == null || overloads.Length < 0)
yield break;
var av = new ArrayValue (Evaluation.GetStringType(ctxt), Strings.TryGet(nextIdentifierHash));
foreach (DSymbol o in overloads) {
var dn = o.Definition;
if (dn.TemplateParameters != null && dn.TemplateParameters.Length > 0 &&
dn.TemplateParameters[0] is TemplateValueParameter)
{
//TODO: Test parameter types for being a string value
o.SetDeducedTypes(new[]{ new TemplateParameterSymbol(dn.TemplateParameters[0], av) });
yield return o;
}
}
}
/// <summary>
/// http://dlang.org/operatoroverloading.html#Dispatch
/// Check for the existence of an opDispatch overload.
/// Important: Because static opDispatches are allowed as well, do check whether we can access non-static overloads from non-instance expressions or such
/// </summary>
public static IEnumerable<AbstractType> TryResolveFurtherIdViaOpDispatch(ResolutionContext ctxt, int nextIdentifierHash, UserDefinedType b)
{
// The usual SO prevention
if (nextIdentifierHash == opDispatchId || b == null)
yield break;
var pop = ctxt.ScopedBlock != b.Definition;
if (pop) {
// Mainly required for not resolving opDispatch's return type, as this will be performed later on in higher levels
var opt = ctxt.CurrentContext.ContextDependentOptions;
ctxt.PushNewScope (b.Definition as IBlockNode);
ctxt.CurrentContext.IntroduceTemplateParameterTypes (b);
ctxt.CurrentContext.ContextDependentOptions = opt;
}
// Look for opDispatch-Members inside b's Definition
var overloads = TypeDeclarationResolver.ResolveFurtherTypeIdentifier (opDispatchId, new[]{b}, ctxt);
if(pop)
ctxt.Pop ();
if (overloads == null || overloads.Length < 0)
yield break;
var av = new ArrayValue (Evaluation.GetStringType(ctxt), Strings.TryGet(nextIdentifierHash));
foreach (DSymbol o in overloads) {
var dn = o.Definition;
if (dn.TemplateParameters != null && dn.TemplateParameters.Length > 0 &&
dn.TemplateParameters[0] is TemplateValueParameter)
{
//TODO: Test parameter types for being a string value
o.DeducedTypes = new System.Collections.ObjectModel.ReadOnlyCollection<TemplateParameterSymbol> (
new[]{ new TemplateParameterSymbol(dn.TemplateParameters[0], av) } );
yield return o;
}
}
}