public static void CompileCopy(JsClass klass)
{
var type = klass.Type;
var func = new JsFunction(null);
var obj = "o".Id();
func.Body.Add(type.New().Var(obj.Value));
foreach (var field in GetInstanceFields(klass))
{
var name = field.JsName();
var value = "this".Id().Get(name);
if (field.Type.TypeKind == TypeKind.Struct)
{
value = "$copy".Id().Call(value);
}
func.Body.Add(obj.Set(name, value));
}
func.Body.Add(obj.Return());
klass.ExtendPrototype(func, "$copy");
}
public MethodContext(JsCompiler host, JsClass klass, IMethod method, TryCatchBlock[] blocks)
{
ProtectedBlocks = blocks;
Host = host;
Class = klass;
Method = method;
}
internal JsFunction CompileMethodBody(JsClass klass, IMethod method, IClrMethodBody body)
{
var blocks = body.GetAllProtectedBlocks().ToArray();
var context = new MethodContext(this, klass, method, blocks);
var func = new JsFunction(null, method.JsParams());
//TODO: cache info and code as separate class property
var info = new JsObject(true)
{
{ "isVoid", method.IsVoid() },
{ "blocks", CompileBlocks(blocks) },
{ "blockMap", CompileBlockMap(body, blocks) },
};
var args = CompilerArgs(method);
var vars = new JsArray(method.Body.LocalVariables.Select(x => x.Type.InitialValue()));
var code = new JsArray(body.Code.Select <Instruction, object>(i => new JsInstruction(i, CompileInstruction(context, i))), "\n");
func.Body.Add(args.Var("args"));
func.Body.Add(vars.Var("vars"));
func.Body.Add(info.Var("info"));
foreach (var var in context.Vars)
{
func.Body.Add(var);
}
func.Body.Add(code.Var("code"));
func.Body.Add(new JsText("var ctx = new $context(info, args, vars);"));
func.Body.Add(new JsText("return ctx.exec(code);"));
return(func);
}
public static void Compile(JsCompiler compiler, JsClass klass, ObjectMethodId id)
{
var type = klass.Type;
if (!type.IsEnum)
{
throw new InvalidOperationException("Type is not enum.");
}
switch (id)
{
case ObjectMethodId.Equals:
//TODO: implement Equals for enums here
JsStruct.Compile(compiler, klass, id);
break;
case ObjectMethodId.GetHashCode:
CompileGetHashCode(compiler, klass);
break;
case ObjectMethodId.ToString:
CompileToString(compiler, klass);
break;
default:
throw new ArgumentOutOfRangeException("id");
}
}
private static void CompileImplementedMethods(JsClass klass, IMethod method)
{
if (method.IsExplicitImplementation)
{
return;
}
var impls = method.Implements;
if (impls == null)
{
return;
}
if (impls.Count <= 0)
{
return;
}
var type = method.DeclaringType.JsFullName(method);
var name = method.JsName();
foreach (var i in impls)
{
var func = new JsFunction(null, i.JsParams());
var call = "this".Id().Get(name).Call(i.JsArgs());
func.Body.Add(method.IsVoid() ? call.AsStatement() : call.Return());
klass.Add(new JsGeneratedMethod(string.Format("{0}.prototype.{1}", type, i.JsName()), func));
}
}
private void CompileOverrides(JsClass klass, IMethod method)
{
// GetType is implemented by TypeInfoBuilder
if (method.IsGetType())
{
return;
}
foreach (var subclass in klass.Subclasses.ToList())
{
var o = subclass.Type.FindOverrideMethod(method);
if (o != null)
{
CompileMethod(o);
}
else
{
var id = method.GetObjectMethodId();
if (id != ObjectMethodId.Unknown)
{
CompileMethod(subclass, id);
}
}
CompileOverrides(subclass, method);
}
}
private static void CompileGetHashCode(JsClass klass)
{
var func = new JsFunction(null);
func.Body.Add("$hash".Id().Call("this".Id()).Return());
klass.ExtendPrototype(func, "GetHashCode");
}
internal JsClass CompileClass(IType type)
{
if (type == null || type.IsExcluded())
{
return(null);
}
var klass = type.Data as JsClass;
if (klass != null)
{
return(klass);
}
if (type.IsEnum && type.ValueType.IsInt64())
{
CompileClass(type.ValueType);
}
var baseType = type.BaseType;
var baseClass = CompileClass(baseType.Is(SystemTypeCode.ValueType) || type.IsEnum ? SystemTypes.Object : baseType);
var ns = string.IsNullOrEmpty(type.Namespace) ? "$global" : type.Namespace;
_program.DefineNamespace(ns);
klass = new JsClass(type, baseType.Is(SystemTypeCode.ValueType) || type.IsString() ? null : baseClass);
type.Data = klass;
if (baseClass != null)
{
baseClass.Subclasses.Add(klass);
}
foreach (var iface in type.Interfaces)
{
JsInterface.Make(iface).Implementations.Add(klass);
}
_program.Add(klass);
switch (type.TypeKind)
{
case TypeKind.Struct:
JsStruct.CompileCopy(klass);
break;
case TypeKind.Delegate:
JsDelegate.CreateInstanceImpl(klass);
break;
}
CompileImpls(klass, type);
return(klass);
}
private static void CompileToString(JsCompiler compiler, JsClass klass)
{
var type = klass.Type;
CompileValues(compiler, klass);
var func = new JsFunction(null);
var withFlags = type.HasAttribute("System.FlagsAttribute");
func.Body.Add(new JsText(withFlags ? "return $enum.flags(this);" : "return $enum.stringify(this);"));
klass.ExtendPrototype(func, "toString");
}
private void CompileMethod(JsClass klass, ObjectMethodId id)
{
switch (klass.Type.TypeKind)
{
case TypeKind.Struct:
JsStruct.Compile(this, klass, id);
break;
case TypeKind.Enum:
JsEnum.Compile(this, klass, id);
break;
}
}
private void CompileField(JsClass klass, IField field)
{
if (field.Data != null)
{
return;
}
//TODO: do not compile primitive types
klass.Add(JsField.Make(field));
if (field.Type.TypeKind == TypeKind.Struct)
{
CompileType(field.Type);
}
}
public static void Compile(JsCompiler compiler, JsClass klass, ObjectMethodId id)
{
switch (id)
{
case ObjectMethodId.Equals:
CompileEquals(compiler, klass);
break;
case ObjectMethodId.GetHashCode:
CompileGetHashCode(klass);
break;
case ObjectMethodId.ToString:
// Object.ToString will be used
break;
default:
throw new ArgumentOutOfRangeException("id");
}
}
private static void CompileEquals(JsCompiler compiler, JsClass klass)
{
var other = "o".Id();
var func = new JsFunction(null, other.Value);
func.Body.Add(new JsText("if (o === null || o === undefined) return false;"));
//TODO: check object type
JsNode result = null;
foreach (var field in GetInstanceFields(klass))
{
var name = field.JsName();
var left = "this".Id().Get(name);
var right = other.Get(name);
JsNode e;
// primitive and ref types
if (field.Type.TypeKind != TypeKind.Struct && !field.Type.IsInt64Based())
{
e = left.Op(right, BinaryOperator.Equality);
}
else // value types, int64 based
{
var objectType = compiler.SystemTypes.Object;
var eq = objectType.Methods.Find("Equals", objectType, objectType);
compiler.CompileMethod(eq);
e = eq.JsFullName().Id().Call(left, right);
}
result = result == null ? e : result.And(e);
}
func.Body.Add(result == null ? "false".Id().Return() : result.Return());
var methodName = ObjectMethods.Find(compiler.SystemTypes.Object, ObjectMethodId.Equals).JsName();
klass.ExtendPrototype(func, methodName);
}
private void CompileImpls(JsClass klass, IType type)
{
var isEnumOrStruct = type.TypeKind == TypeKind.Struct || type.TypeKind == TypeKind.Enum;
List <ObjectMethodId> objectMethods = null;
if (isEnumOrStruct)
{
objectMethods = new List <ObjectMethodId>
{
ObjectMethodId.Equals,
ObjectMethodId.GetHashCode,
ObjectMethodId.ToString
};
}
foreach (var method in type.Methods)
{
if (isEnumOrStruct)
{
var id = method.GetObjectMethodId();
if (id != ObjectMethodId.Unknown)
{
objectMethods.Remove(id);
}
}
if (IsCompilableImpl(method))
{
CompileMethod(method);
}
}
if (isEnumOrStruct)
{
foreach (var id in objectMethods.Where(id => ObjectMethods.Find(SystemTypes.Object, id).Data != null))
{
CompileMethod(klass, id);
}
}
}
private JsFunction CompileFunction(JsClass klass, IMethod method)
{
var func = CompileInlineFunction(method);
if (func != null)
{
return(func);
}
var body = method.Body as IClrMethodBody;
if (body == null)
{
throw new NotSupportedException("The method format is not supported");
}
var translator = new Translator();
var codeProvider = new NopCodeProvider(this, klass, method);
translator.Translate(method, method.Body, codeProvider);
return(codeProvider.Function);
}
private static void CompileGetHashCode(JsCompiler compiler, JsClass klass)
{
var type = klass.Type;
var func = new JsFunction(null);
var value = "this.$value".Id();
if (type.ValueType.IsInt64())
{
//TODO: inline [U]Int64.GetHashCode implementation
func.Body.Add(value.Get("GetHashCode").Call().Return());
}
else if (!type.ValueType.Is(SystemTypeCode.Int32))
{
var int32Type = compiler.SystemTypes.Int32;
func.Body.Add("$conv".Id().Call(value, type.ValueType.JsTypeCode(), int32Type.JsTypeCode()).Return());
}
else
{
func.Body.Add(value.Return());
}
klass.ExtendPrototype(func, "GetHashCode");
}
private string CompileBox(IType type, JsClass klass)
{
var name = string.Format("{0}.$box", type.JsFullName());
if (klass.BoxCompiled)
{
return(name);
}
klass.BoxCompiled = true;
var val = (JsNode)"v".Id();
var func = new JsFunction(null, "v");
if (type.IsNullableInstance())
{
func.Body.Add(new JsText(string.Format("if (!v.has_value) return null;")));
func.Body.Add("$copy".Id().Call(val).Return());
type = type.GetTypeArgument(0);
CompileClass(type);
}
else
{
if (type.Is(SystemTypeCode.Boolean))
{
val = val.Op("!!");
}
func.Body.Add(type.New(val).Return());
}
klass.Add(new JsGeneratedMethod(name, func));
return(name);
}
private static void CompileValues(JsCompiler compiler, JsClass klass)
{
var type = klass.Type;
var fields = type.GetEnumFields()
.Select(x =>
{
var value = GetValue(compiler, x, type.ValueType);
return(new { Name = x.Name, Value = value });
});
var typeName = type.JsFullName();
var valuesField = string.Format("{0}.$$values", typeName);
object values;
if (type.ValueType.IsInt64())
{
values = new JsArray(fields.Select(x => (object)new JsObject
{
{ "name", x.Name },
{ "value", x.Value },
}));
}
else
{
values = new JsObject(fields.Select(x => new KeyValuePair <object, object>(x.Value, x.Name)));
}
klass.Add(new JsGeneratedField(valuesField, values));
var func = new JsFunction(null);
func.Body.Add(valuesField.Id().Return());
klass.ExtendPrototype(func, "$values");
}
private string CompileUnbox(MethodContext context, IType type, JsClass klass)
{
var name = string.Format("{0}.$unbox", type.JsFullName());
if (klass.UnboxCompiled)
{
return(name);
}
klass.UnboxCompiled = true;
var valueType = type.GetTypeArgument(0);
var unbox = Unbox(context, valueType);
var val = (JsNode)"v".Id();
var func = new JsFunction(null, "v");
func.Body.Add(val.Set(unbox.Call(val)));
func.Body.Add(type.New(val).Return());
klass.Add(new JsGeneratedMethod(name, func));
return(name);
}
public JsClass(IType type, JsClass baseClass)
{
Type = type;
Base = baseClass;
}
public NopCodeProvider(JsCompiler host, JsClass klass, IMethod method)
{
_host = host;
_klass = klass;
_method = method;
}
private static IEnumerable <IField> GetInstanceFields(JsClass klass)
{
return(klass.Type.Fields.Where(field => !field.IsStatic && !field.IsConstant));
}