private static void GenerateMethod(Context context, OutputBuffer output, MethodDeclarationSyntax method, bool asStatic)
{
if (method.HasDocumentation())
{
output.AppendLine(method.GetDocumentation(output.GetIndent()));
}
output.Append($"public ");
if (asStatic)
{
output.Append("static ");
}
output.Append($"{method.ReturnType} {method.Identifier}");
if (method.TypeParameterList != null)
{
output.Append(method.TypeParameterList.ToString());
}
output.AppendLine(method.ParameterList.ToString());
if (method.ConstraintClauses.Any())
{
output.AppendLine("\t" + method.ConstraintClauses.ToString());
}
output.AppendLine("{");
if (method.ReturnType.ToString() != "void")
{
output.Append($"\tvar result = _js.Invoke(nameof({method.Identifier})");
foreach (var parameter in method.ParameterList.Parameters)
{
output.Append($", {parameter.Identifier}");
}
output.AppendLine(");");
output.AppendLine();
output.AppendLine("\tif (result == null)");
output.AppendLine("\t\treturn null;");
output.AppendLine();
var returnType = method.ReturnType.ToString();
if (returnType.EndsWith("?"))
{
returnType = returnType.TrimEnd('?');
}
output.AppendLine($"\treturn JSObjectWrapperFactory.Create<{returnType}>(result);");
}
else
{
output.Append($"\t_js.Invoke(nameof({method.Identifier})");
foreach (var parameter in method.ParameterList.Parameters)
{
output.Append($", {parameter.Identifier}");
}
output.AppendLine(");");
}
output.AppendLine("}");
output.AppendLine();
}
private static void GenerateProperty(Context context, OutputBuffer output, PropertyDeclarationSyntax property, bool asStatic)
{
if (property.HasDocumentation())
{
output.AppendLine(property.GetDocumentation(output.GetIndent()));
}
if (property.AccessorList == null)
{
throw new InvalidOperationException(CreateErrorMessage(property, $"AccessorList was expected."));
}
string?wrappedType = null;
foreach (var attribute in property.AttributeLists.Select(x => x.ToString().Trim('[', ']')))
{
if (attribute.StartsWith("Wrap(") && attribute.EndsWith(")"))
{
wrappedType = attribute.Substring("Wrap(".Length, attribute.Length - "Wrap(".Length - ")".Length);
}
}
bool canRead = property.AccessorList.Accessors.Any(x => x.Keyword.ToString() == "get");
bool canWrite = property.AccessorList.Accessors.Any(x => x.Keyword.ToString() == "set");
if (canRead && !canWrite) // readonly
{
output.Append($"private ");
if (asStatic)
{
output.Append("static ");
}
output.AppendLine($"{property.Type}? _{property.Identifier};");
output.AppendLine();
}
output.Append($"public ");
if (asStatic)
{
output.Append("static ");
}
output.AppendLine($"{property.Type} {property.Identifier}");
output.AppendLine("{");
if (canRead && canWrite)
{
if (wrappedType == null)
{
output.AppendLine($"\tget => _js.GetObjectProperty<{property.Type}>(nameof({property.Identifier}));");
output.AppendLine($"\tset => _js.SetObjectProperty(nameof({property.Identifier}), value);");
}
else
{
throw new NotImplementedException("Wrap not implemented for read / write properties.");
}
}
else if (canRead && !canWrite) // readonly
{
output.Append($"\tget => _{property.Identifier} ?? (_{property.Identifier} = ");
if (wrappedType == null)
{
output.Append($"_js.GetObjectProperty<{property.Type}>(nameof({property.Identifier}))");
}
else
{
output.Append($"new {property.Type}(_js.GetObjectProperty<JSObject>(nameof({property.Identifier})))");
}
output.AppendLine(");");
}
output.AppendLine("}");
output.AppendLine();
}
private static void GenerateWrapper(Context context, OutputBuffer output, ClassDeclarationSyntax @class, List <string> implements)
{
context.Wrappers.Add(context.CurrentNamespace + "." + @class.Identifier.ToString());
output.Append($"public partial class {@class.Identifier}");
if (@class.BaseList != null || implements.Any())
{
output.Append(" : ");
if (@class.BaseList != null)
{
output.Append(string.Join(", ", @class.BaseList.Types.Select(x => x.ToString())));
}
if (implements.Any())
{
// If we already output the BaseList we need to add a ,
if (@class.BaseList != null)
{
output.Append(", ");
}
output.Append(string.Join(", ", implements));
}
}
output.AppendLine();
output.AppendLine("{");
output.Append("\tinternal static ");
if (@class.BaseList != null)
{
output.Append("new ");
}
output.AppendLine($"void Initialize() {{ JSObjectWrapperFactory.RegisterFactory(typeof({@class.Identifier}), x => new {@class.Identifier}(x)); }}");
output.AppendLine();
if (@class.BaseList == null)
{
output.AppendLine("\tprotected readonly JSObject _js;");
output.AppendLine();
output.AppendLine($"\tinternal {@class.Identifier}(object obj)");
output.AppendLine("\t{");
output.AppendLine("\t\tif (!(obj is JSObject))");
output.AppendLine("\t\t\tthrow new WasmWranglerException($\"Expected {nameof(obj)} to be an instance of JSObject.\");");
output.AppendLine();
output.AppendLine("\t\t_js = (JSObject)obj;");
output.AppendLine("\t}");
}
else
{
output.AppendLine($"\tinternal {@class.Identifier}(object obj) : base(obj) {{ }}");
}
output.AppendLine();
output.IncreaseIndent();
foreach (var member in @class.Members)
{
GenerateInterfaceMember(context, output, member, false);
}
output.DecreaseIndent();
output.AppendLine("}");
output.AppendLine();
}