private JsExpression CreateInitEnumCall(JsEnum type, string ctorName)
{
var values = new List <JsObjectLiteralProperty>();
foreach (var v in type.CSharpTypeDefinition.Fields)
{
if (v.ConstantValue != null)
{
var sem = _metadataImporter.GetFieldSemantics(v);
if (sem.Type == FieldScriptSemantics.ImplType.Field)
{
values.Add(new JsObjectLiteralProperty(sem.Name, JsExpression.Number(Convert.ToDouble(v.ConstantValue))));
}
else if (sem.Type == FieldScriptSemantics.ImplType.Constant && sem.Name != null)
{
values.Add(new JsObjectLiteralProperty(sem.Name, sem.Value is string?JsExpression.String((string)sem.Value) : JsExpression.Number(Convert.ToDouble(sem.Value))));
}
}
else
{
_errorReporter.Region = v.Region;
_errorReporter.InternalError("Enum field " + v.FullName + " is not constant.");
}
}
var args = new List <JsExpression> {
JsExpression.Identifier(ctorName), _linker.CurrentAssemblyExpression, JsExpression.ObjectLiteral(values)
};
if (MetadataUtils.IsNamedValues(type.CSharpTypeDefinition, _attributeStore))
{
args.Add(JsExpression.True);
}
return(JsExpression.Invocation(JsExpression.Member(_systemScript, InitEnum), args));
}
private JsExpression GetFieldHashCode(IField field)
{
var impl = _metadataImporter.GetFieldSemantics(field);
if (impl.Type != FieldScriptSemantics.ImplType.Field)
{
return(null);
}
IType type = NullableType.GetUnderlyingType(field.Type);
bool needNullCheck = field.Type.IsReferenceType != false || field.Type.IsKnownType(KnownTypeCode.NullableOfT) || type.Kind == TypeKind.Enum && MetadataUtils.IsNamedValues(field.Type.GetDefinition(), _attributeStore);
JsExpression member = JsExpression.Member(JsExpression.This, impl.Name);
JsExpression result = JsExpression.Invocation(JsExpression.Member(_systemScript, "getHashCode"), member);
if (needNullCheck)
{
result = JsExpression.Conditional(member, result, JsExpression.Number(0));
}
if (type.Kind == TypeKind.Enum && !MetadataUtils.IsNamedValues(type.GetDefinition(), _attributeStore))
{
result = needNullCheck ? JsExpression.LogicalOr(member, JsExpression.Number(0)) : member;
}
else if (type is ITypeDefinition)
{
switch (((ITypeDefinition)type).KnownTypeCode)
{
case KnownTypeCode.Boolean:
result = JsExpression.Conditional(member, JsExpression.Number(1), JsExpression.Number(0));
break;
case KnownTypeCode.Byte:
case KnownTypeCode.SByte:
case KnownTypeCode.Char:
case KnownTypeCode.Int16:
case KnownTypeCode.UInt16:
case KnownTypeCode.Int32:
case KnownTypeCode.UInt32:
case KnownTypeCode.Int64:
case KnownTypeCode.UInt64:
case KnownTypeCode.Decimal:
case KnownTypeCode.Single:
case KnownTypeCode.Double:
result = needNullCheck ? JsExpression.LogicalOr(member, JsExpression.Number(0)) : member;
break;
}
}
return(result);
}
private JsExpression GenerateFieldCompare(IField field, JsExpression o)
{
var impl = _metadataImporter.GetFieldSemantics(field);
if (impl.Type != FieldScriptSemantics.ImplType.Field)
{
return(null);
}
bool simpleCompare = false;
if (field.Type.Kind == TypeKind.Enum && !MetadataUtils.IsNamedValues(field.Type.GetDefinition(), _attributeStore))
{
simpleCompare = true;
}
if (field.Type is ITypeDefinition)
{
switch (((ITypeDefinition)field.Type).KnownTypeCode)
{
case KnownTypeCode.Boolean:
case KnownTypeCode.Byte:
case KnownTypeCode.SByte:
case KnownTypeCode.Char:
case KnownTypeCode.Int16:
case KnownTypeCode.UInt16:
case KnownTypeCode.Int32:
case KnownTypeCode.UInt32:
case KnownTypeCode.Int64:
case KnownTypeCode.UInt64:
case KnownTypeCode.Decimal:
case KnownTypeCode.Single:
case KnownTypeCode.Double:
simpleCompare = true;
break;
}
}
var m1 = JsExpression.Member(JsExpression.This, impl.Name);
var m2 = JsExpression.Member(o, impl.Name);
return(simpleCompare ? (JsExpression)JsExpression.Same(m1, m2) : JsExpression.Invocation(JsExpression.Member(_systemScript, "equals"), m1, m2));
}
public JsExpression Default(IType type, IRuntimeContext context)
{
if (type.IsReferenceType == true || type.Kind == TypeKind.Dynamic || type.IsKnownType(KnownTypeCode.NullableOfT))
{
return(JsExpression.Null);
}
else if (type.Kind == TypeKind.Enum)
{
return(MetadataUtils.IsNamedValues(type.GetDefinition(), _attributeStore) ? JsExpression.Null : JsExpression.Number(0));
}
else if (type is ITypeDefinition)
{
switch (((ITypeDefinition)type).KnownTypeCode)
{
case KnownTypeCode.Boolean:
return(JsExpression.False);
case KnownTypeCode.NullableOfT:
return(JsExpression.Null);
case KnownTypeCode.DateTime:
return(JsExpression.New(CreateTypeReferenceExpression(KnownTypeReference.DateTime), JsExpression.Number(0)));
case KnownTypeCode.Byte:
case KnownTypeCode.SByte:
case KnownTypeCode.Char:
case KnownTypeCode.Int16:
case KnownTypeCode.UInt16:
case KnownTypeCode.Int32:
case KnownTypeCode.UInt32:
case KnownTypeCode.Int64:
case KnownTypeCode.UInt64:
case KnownTypeCode.Decimal:
case KnownTypeCode.Single:
case KnownTypeCode.Double:
return(JsExpression.Number(0));
}
}
return(JsExpression.Invocation(JsExpression.Member(CreateTypeReferenceExpression(_systemScript), "getDefaultValue"), GetScriptType(type, TypeContext.GetScriptType, context)));
}
private JsExpression GetCastTarget(IType type, IRuntimeContext context)
{
var def = type.GetDefinition();
if (type.Kind == TypeKind.Enum)
{
var underlying = MetadataUtils.IsNamedValues(def) ? _compilation.FindType(KnownTypeCode.String) : def.EnumUnderlyingType;
return(CreateTypeReferenceExpression(underlying.GetDefinition()));
}
if (def != null)
{
if (MetadataUtils.IsSerializable(def) && string.IsNullOrEmpty(MetadataUtils.GetSerializableTypeCheckCode(def)))
{
return(null);
}
if (!MetadataUtils.DoesTypeObeyTypeSystem(def))
{
return(null);
}
}
return(GetScriptType(type, TypeContext.GetScriptType, context));
}
