/// <summary>
/// Returns all ObjC forward class and protocol declarations required to fully represent the facet.
/// </summary>
/// <param name="facet"></param>
/// <returns></returns>
public List <string> ObjCForwardDeclarations(CodeFacet facet)
{
List <string> imports = new List <string>();
if (!Config.GenerateFacetBinding(facet))
{
return(imports);
}
// objC type
// note that a constructor has no return type
string objCType = facet.ObjCFacet.Type;
if (!string.IsNullOrEmpty(objCType))
{
// if the type is a generic parameter
if (facet.IsGenericParameterOrRef())
{
objCType = "System_Object";
}
string import = String.Format("@class {0};", objCType);
imports.Add(import);
if (facet.IsArray == true)
{
import = String.Format("@class {0};", facet.ObjCFacet.BaseType);
imports.Add(import);
}
if (facet.GetType() == typeof(InterfaceFacet) || facet.IsInterface)
{
import = String.Format("@protocol {0}_;", objCType);
imports.Add(import);
import = String.Format("@protocol {0};", objCType);
imports.Add(import);
}
}
// forward declare objC facet types for all children
List <CodeFacet> children = facet.Children();
foreach (CodeFacet child in children)
{
imports.AddRange(ObjCForwardDeclarations(child));
}
// return a distinct list to remove duplicates
imports = imports.Distinct().ToList();
imports.Sort();
return(imports);
}
/// <summary>
/// Returns additional required ObjC import directives.
/// </summary>
/// <param name="facet"></param>
/// <returns></returns>
public List <string> ObjCImportDirectives(CodeFacet facet, bool filter = true)
{
List <string> imports = new List <string>();
if (!Config.GenerateFacetBinding(facet))
{
return(imports);
}
// objC type
// note that a constructor has no return type
string objCType = facet.ObjCFacet.Type;
string importStr = null;
if (!string.IsNullOrEmpty(objCType))
{
// we only need to import types defined in the current assembly.
// other types will be imported via their own assembly's header
if (AssemblyFacet.DefinesFacetType(facet.Type))
{
// if the type is an enum
if (facet.IsEnum)
{
objCType = facet.ObjCFacet.Type;
importStr = $"#import \"{objCType}.h\"";
imports.Add(importStr);
}
}
}
// forward declare objC facet types for all children
List <CodeFacet> children = facet.Children();
foreach (CodeFacet child in children)
{
imports.AddRange(ObjCImportDirectives(child, false));
}
// remove duplicates
imports = imports.Distinct().ToList();
imports.Sort();
// the filter ensures that the import list doesn't include
// the header that the import directives will be inserted into
if (filter && importStr != null)
{
imports.Remove(importStr);
}
return(imports);
}