public CSharpApiGenerator(IHostEnvironment env, Arguments args, string regenerate)
{
Contracts.CheckValue(env, nameof(env));
_host = env.Register(RegistrationName);
_host.AssertValue(args, nameof(args));
_host.AssertNonEmpty(regenerate, nameof(regenerate));
Utils.CheckOptionalUserDirectory(args.CsFilename, nameof(args.CsFilename));
_csFilename = args.CsFilename;
if (string.IsNullOrWhiteSpace(_csFilename))
{
_csFilename = "CSharpApi.cs";
}
_regenerate = regenerate;
_excludedSet = new HashSet <string>(args.Exclude);
_generatedClasses = new GeneratedClasses();
}
public static string GetInputType(ComponentCatalog catalog, Type inputType, GeneratedClasses generatedClasses, string rootNameSpace)
{
if (inputType.IsGenericType && inputType.GetGenericTypeDefinition() == typeof(Var <>))
{
return($"Var<{GetCSharpTypeName(inputType.GetGenericTypeArgumentsEx()[0])}>");
}
if (inputType.IsArray && Var <int> .CheckType(inputType.GetElementType()))
{
return($"ArrayVar<{GetCSharpTypeName(inputType.GetElementType())}>");
}
if (inputType.IsGenericType && inputType.GetGenericTypeDefinition() == typeof(Dictionary <,>) &&
inputType.GetGenericTypeArgumentsEx()[0] == typeof(string))
{
return($"DictionaryVar<{GetCSharpTypeName(inputType.GetGenericTypeArgumentsEx()[1])}>");
}
if (Var <int> .CheckType(inputType))
{
return($"Var<{GetCSharpTypeName(inputType)}>");
}
var type = ExtractOptionalOrNullableType(inputType, out bool isNullable, out bool isOptional);
var typeEnum = TlcModule.GetDataType(type);
switch (typeEnum)
{
case TlcModule.DataKind.Float:
case TlcModule.DataKind.Int:
case TlcModule.DataKind.UInt:
case TlcModule.DataKind.Char:
case TlcModule.DataKind.String:
case TlcModule.DataKind.Bool:
case TlcModule.DataKind.DataView:
case TlcModule.DataKind.TransformModel:
case TlcModule.DataKind.PredictorModel:
case TlcModule.DataKind.FileHandle:
return(GetCSharpTypeName(inputType));
case TlcModule.DataKind.Array:
return(GetInputType(catalog, inputType.GetElementType(), generatedClasses, rootNameSpace) + "[]");
case TlcModule.DataKind.Component:
string kind;
bool success = catalog.TryGetComponentKind(type, out kind);
Contracts.Assert(success);
return($"{kind}");
case TlcModule.DataKind.Enum:
var enumName = generatedClasses.GetApiName(type, rootNameSpace);
if (isNullable)
{
return($"{enumName}?");
}
if (isOptional)
{
return($"Optional<{enumName}>");
}
return($"{enumName}");
default:
if (isNullable)
{
return(generatedClasses.GetApiName(type, rootNameSpace) + "?");
}
if (isOptional)
{
return($"Optional<{generatedClasses.GetApiName(type, rootNameSpace)}>");
}
return(generatedClasses.GetApiName(type, rootNameSpace));
}
}
public static string GetValue(ComponentCatalog catalog, Type fieldType, object fieldValue,
GeneratedClasses generatedClasses, string rootNameSpace)
{
if (fieldType.IsGenericType && fieldType.GetGenericTypeDefinition() == typeof(Var <>))
{
return($"new Var<{GetCSharpTypeName(fieldType.GetGenericTypeArgumentsEx()[0])}>()");
}
if (fieldType.IsArray && Var <int> .CheckType(fieldType.GetElementType()))
{
return($"new ArrayVar<{GetCSharpTypeName(fieldType.GetElementType())}>()");
}
if (fieldType.IsGenericType && fieldType.GetGenericTypeDefinition() == typeof(Dictionary <,>) &&
fieldType.GetGenericTypeArgumentsEx()[0] == typeof(string))
{
return($"new DictionaryVar<{GetCSharpTypeName(fieldType.GetGenericTypeArgumentsEx()[1])}>()");
}
if (Var <int> .CheckType(fieldType))
{
return($"new Var<{GetCSharpTypeName(fieldType)}>()");
}
if (fieldValue == null)
{
return(null);
}
if (!fieldType.IsInterface)
{
try
{
var defaultFieldValue = Activator.CreateInstance(fieldType);
if (defaultFieldValue == fieldValue)
{
return(null);
}
}
catch (MissingMethodException)
{
// No parameterless constructor, ignore.
}
}
var typeEnum = TlcModule.GetDataType(fieldType);
fieldType = ExtractOptionalOrNullableType(fieldType, out bool isNullable, out bool isOptional);
switch (typeEnum)
{
case TlcModule.DataKind.Array:
var arr = fieldValue as Array;
if (arr != null && arr.GetLength(0) > 0)
{
return($"{{ {string.Join(", ", arr.Cast<object>().Select(item => GetValue(catalog, fieldType.GetElementType(), item, generatedClasses, rootNameSpace)))} }}");
}
return(null);
case TlcModule.DataKind.String:
var strval = fieldValue as string;
if (strval != null)
{
return(Quote(strval));
}
return(null);
case TlcModule.DataKind.Float:
if (fieldValue is double d)
{
if (double.IsPositiveInfinity(d))
{
return("double.PositiveInfinity");
}
if (double.IsNegativeInfinity(d))
{
return("double.NegativeInfinity");
}
if (d != 0)
{
return(d.ToString("R") + "d");
}
}
else if (fieldValue is float f)
{
if (float.IsPositiveInfinity(f))
{
return("float.PositiveInfinity");
}
if (float.IsNegativeInfinity(f))
{
return("float.NegativeInfinity");
}
if (f != 0)
{
return(f.ToString("R") + "f");
}
}
return(null);
case TlcModule.DataKind.Int:
if (fieldValue is int i)
{
if (i != 0)
{
return(i.ToString());
}
}
else if (fieldValue is long l)
{
if (l != 0)
{
return(l.ToString());
}
}
return(null);
case TlcModule.DataKind.Bool:
return((bool)fieldValue ? "true" : "false");
case TlcModule.DataKind.Enum:
string enumAsString = fieldValue.ToString();
if (fieldType.GetField(enumAsString).GetCustomAttribute <HideEnumValueAttribute>() != null)
{
// The default value for the enum has the hiding attribute on it. We will search for
// alternate names. Regrettably I see no way beyond a manual scan.
string unhiddenName = Enum.GetNames(fieldType).Zip(Enum.GetValues(fieldType).Cast <object>(), (name, val) => (name, val))
.Where(pair => pair.val.Equals(fieldValue))
.Where(pair => fieldType.GetField(pair.name).GetCustomAttribute <HideEnumValueAttribute>() == null)
.Select(pair => pair.name).FirstOrDefault();
enumAsString = unhiddenName ?? throw Contracts.Except($"Could not find unhidden alternative for '{fieldValue}' in type '{fieldType}'");
}
if (generatedClasses.IsGenerated(fieldType.FullName))
{
return(generatedClasses.GetApiName(fieldType, rootNameSpace) + "." + enumAsString);
}
else
{
return(generatedClasses.GetApiName(fieldType, "") + "." + enumAsString);
}
case TlcModule.DataKind.Char:
return($"'{GetCharAsString((char)fieldValue)}'");
case TlcModule.DataKind.Component:
var type = fieldValue.GetType();
ComponentCatalog.ComponentInfo componentInfo;
if (!catalog.TryFindComponent(fieldType, type, out componentInfo))
{
return(null);
}
object defaultComponent = null;
try
{
defaultComponent = Activator.CreateInstance(componentInfo.ArgumentType);
}
catch (MissingMethodException)
{
// No parameterless constructor, ignore.
}
var propertyBag = new List <string>();
if (defaultComponent != null)
{
foreach (var fieldInfo in componentInfo.ArgumentType.GetFields())
{
var inputAttr = fieldInfo.GetCustomAttributes(typeof(ArgumentAttribute), false).FirstOrDefault() as ArgumentAttribute;
if (inputAttr == null || inputAttr.Visibility == ArgumentAttribute.VisibilityType.CmdLineOnly)
{
continue;
}
if (fieldInfo.FieldType == typeof(JArray) || fieldInfo.FieldType == typeof(JObject))
{
continue;
}
var propertyValue = GetValue(catalog, fieldInfo.FieldType, fieldInfo.GetValue(fieldValue), generatedClasses, rootNameSpace);
var defaultPropertyValue = GetValue(catalog, fieldInfo.FieldType, fieldInfo.GetValue(defaultComponent), generatedClasses, rootNameSpace);
if (propertyValue != defaultPropertyValue)
{
propertyBag.Add($"{Capitalize(inputAttr.Name ?? fieldInfo.Name)} = {propertyValue}");
}
}
}
var properties = propertyBag.Count > 0 ? $" {{ {string.Join(", ", propertyBag)} }}" : "";
return($"new {GetComponentName(componentInfo)}(){properties}");
case TlcModule.DataKind.Unknown:
return($"new {generatedClasses.GetApiName(fieldType, rootNameSpace)}()");
default:
return(fieldValue.ToString());
}
}