private JsExpression GenerateStructCloneMethod(ITypeDefinition type, string typevarName, bool hasCreateInstance)
{
var stmts = new List <JsStatement>()
{
JsStatement.Var("r", hasCreateInstance ? (JsExpression)JsExpression.Invocation(JsExpression.Member(JsExpression.Identifier(typevarName), "createInstance")) : JsExpression.New(JsExpression.Identifier(typevarName)))
};
var o = JsExpression.Identifier("o");
var r = JsExpression.Identifier("r");
foreach (var f in type.Fields.Where(f => !f.IsStatic))
{
var sem = _metadataImporter.GetFieldSemantics(f);
if (sem.Type == FieldScriptSemantics.ImplType.Field)
{
var def = f.ReturnType.GetDefinition();
JsExpression value = JsExpression.Member(o, sem.Name);
if (def != null && def.Kind == TypeKind.Struct && _metadataImporter.GetTypeSemantics(def).Type == TypeScriptSemantics.ImplType.MutableValueType)
{
value = _runtimeLibrary.CloneValueType(value, f.ReturnType, new DefaultRuntimeContext(type, _metadataImporter, _errorReporter, _namer));
}
stmts.Add(JsExpression.Assign(JsExpression.Member(r, sem.Name), value));
}
}
foreach (var p in type.Properties.Where(p => !p.IsStatic))
{
var sem = _metadataImporter.GetPropertySemantics(p);
if ((sem.Type == PropertyScriptSemantics.ImplType.GetAndSetMethods && MetadataUtils.IsAutoProperty(p) == true) || sem.Type == PropertyScriptSemantics.ImplType.Field)
{
var def = p.ReturnType.GetDefinition();
var fieldName = sem.Type == PropertyScriptSemantics.ImplType.GetAndSetMethods ? _metadataImporter.GetAutoPropertyBackingFieldName(p) : sem.FieldName;
JsExpression value = JsExpression.Member(o, fieldName);
if (def != null && def.Kind == TypeKind.Struct && _metadataImporter.GetTypeSemantics(def).Type == TypeScriptSemantics.ImplType.MutableValueType)
{
value = _runtimeLibrary.CloneValueType(value, p.ReturnType, new DefaultRuntimeContext(type, _metadataImporter, _errorReporter, _namer));
}
stmts.Add(JsExpression.Assign(JsExpression.Member(r, fieldName), value));
}
}
foreach (var e in type.Events.Where(e => !e.IsStatic && MetadataUtils.IsAutoEvent(e) == true))
{
var sem = _metadataImporter.GetEventSemantics(e);
if (sem.Type == EventScriptSemantics.ImplType.AddAndRemoveMethods)
{
var def = e.ReturnType.GetDefinition();
var fieldName = _metadataImporter.GetAutoEventBackingFieldName(e);
JsExpression value = JsExpression.Member(o, fieldName);
if (def != null && def.Kind == TypeKind.Struct && _metadataImporter.GetTypeSemantics(def).Type == TypeScriptSemantics.ImplType.MutableValueType)
{
value = _runtimeLibrary.CloneValueType(value, e.ReturnType, new DefaultRuntimeContext(type, _metadataImporter, _errorReporter, _namer));
}
stmts.Add(JsExpression.Assign(JsExpression.Member(r, fieldName), value));
}
}
stmts.Add(JsStatement.Return(r));
return(JsExpression.FunctionDefinition(new[] { "o" }, JsStatement.Block(stmts)));
}
