public NovaInstance(NovaClass @class)
{
_class = @class;
SingletonMethods = new Dictionary <string, NovaFunction>();
UndefinedMethods = new List <string>();
RemovedMethods = new List <string>();
InstanceVariables = new NovaScope();
}
internal static dynamic Resolve(object rawName, object rawScope)
{
if (rawName.GetType() == typeof(InstanceReference))
{
var iref = (InstanceReference)rawName;
var lval = CompilerServices.CompileExpression(iref.LValue, (NovaScope)rawScope);
var gmArgs = new List <Expression>();
gmArgs.Add(Expression.Constant(lval, typeof(object)));
return(Dynamic(typeof(object), new InteropBinder.GetMember(iref.Key, (NovaScope)rawScope), gmArgs));
}
var name = (string)rawName;
var scope = (NovaScope)rawScope;
if (name.StartsWith("$") && name != "$:")
{
scope = scope.GlobalScope;
name = name.Substring(1);
}
if (name.StartsWith("@") && scope["<nova_context_invokemember>"] != null)
{
if (name.StartsWith("@@"))
{
var _val = Resolve("self", scope);
if (!(_val is NovaInstance))
{
// native object?
_val = Nova.Box((object)_val, scope);
}
var @class = ((NovaInstance)_val).Class;
return
(CompilerServices.CompileExpression(
NovaExpression.Variable(NovaExpression.InstanceRef(Expression.Constant(@class),
Expression.Constant(name.Substring(2)))), scope));
}
return
(CompilerServices.CompileExpression(
NovaExpression.Variable(
NovaExpression.InstanceRef(NovaExpression.Variable(Expression.Constant("self")),
Expression.Constant(name.Substring(1)))), scope));
}
var val = scope[name];
// The cast is needed here because if we get a non-nullable type (such as System.Int32) the check here will throw an exception.
// By casting to System.Object we can avoid the exception since it is a boxed value that can be null.
if ((object)val == null)
{
Type type;
if ((type = NovaTypeResolver.Resolve(name)) != null)
{
var @class = NovaClass.BoxClass(type);
scope.GlobalScope[@class.Name] = @class;
val = @class;
}
}
return(val);
}
public void Merge(NovaClass klass)
{
foreach (var key in klass.ClassMethods.Keys)
{
NovaMethodTable table;
if (ClassMethods.ContainsKey(key))
{
table = ClassMethods[key];
}
else
{
table = new NovaMethodTable(key);
}
foreach (var func in klass.ClassMethods[key].Functions)
{
table.AddFunction(func);
}
}
foreach (var key in klass.InstanceMethods.Keys)
{
NovaMethodTable table;
if (InstanceMethods.ContainsKey(key))
{
table = InstanceMethods[key];
}
else
{
table = new NovaMethodTable(key);
}
foreach (var func in klass.InstanceMethods[key].Functions)
{
table.AddFunction(func);
}
}
Context.MergeWithScope(klass.Context);
}
internal static dynamic MethodChange(object rawName, bool isRemove)
{
if (!_inClassDefine)
{
return(null);
}
var name = (string)rawName;
NovaClass @class = _currentClassScope[_className];
if (isRemove)
{
@class.RemovedMethods.Add(name);
}
else
{
@class.UndefinedMethods.Add(name);
}
return(null);
}
public NovaClass(string name, NovaClass parent, List <NovaFunction> classMethods,
List <NovaFunction> instanceMethods)
{
Name = name;
ClassMethods = new Dictionary <string, NovaMethodTable>();
classMethods.ForEach(func => AddMethod(ClassMethods, func));
if (!ClassMethods.ContainsKey("new"))
{
AddMethod(ClassMethods, new NovaFunction("new", new List <FunctionArgument>(),
NovaExpression.NovaBlock(
NovaExpression.Return(new List <FunctionArgument> {
new FunctionArgument(null, NovaExpression.Variable(Expression.Constant("self")))
}),
Expression.Label(NovaParser.ReturnTarget, Expression.Constant(null, typeof(object)))),
new NovaScope()));
}
InstanceMethods = new Dictionary <string, NovaMethodTable>();
instanceMethods.ForEach(func => AddMethod(InstanceMethods, func));
UndefinedMethods = new List <string>();
RemovedMethods = new List <string>();
Context = new NovaScope();
Parent = parent;
}
internal static dynamic SingletonDefine(Expression rawSingleton, object rawName, object rawArguments,
object rawBody, object rawScope)
{
var scope = (NovaScope)rawScope;
var name = (string)rawName;
var args = (List <FunctionArgument>)rawArguments;
var body = (BlockExpression)rawBody;
var function = new NovaFunction(name, args, body, scope);
object singleton = CompilerServices.CompileExpression(rawSingleton, scope);
if ((singleton is NovaClass))
{
var @class = (NovaClass)singleton;
if (_inClassDefine)
{
if (@class.Name == _className)
{
function.IsSingleton = true;
return(function);
}
NovaClass.AddMethod(@class.InstanceMethods, function);
if (@class.RemovedMethods.Contains(name))
{
@class.RemovedMethods.Remove(name);
}
if (@class.UndefinedMethods.Contains(name))
{
@class.UndefinedMethods.Remove(name);
}
}
else
{
NovaClass.AddMethod(@class.InstanceMethods, function);
if (@class.RemovedMethods.Contains(name))
{
@class.RemovedMethods.Remove(name);
}
if (@class.UndefinedMethods.Contains(name))
{
@class.UndefinedMethods.Remove(name);
}
}
}
else if (singleton is NovaInstance)
{
var @object = (NovaInstance)singleton;
@object.SingletonMethods[name] = function;
if (@object.RemovedMethods.Contains(name))
{
@object.RemovedMethods.Remove(name);
}
if (@object.UndefinedMethods.Contains(name))
{
@object.UndefinedMethods.Remove(name);
}
}
return(function);
}
internal NovaBoxedInstance(object obj, NovaScope scope, NovaClass @class) : base(@class)
{
BoxedObject = obj;
BoxedScope = scope;
}
internal static dynamic DefineClass(object rawName, object rawParent, List <Expression> contents, object rawScope)
{
lock (_classDefineLock) {
if (Resolve(rawName, rawScope) != null)
{
return(DefineCategory(Resolve(rawName, rawScope), contents, rawScope));
}
var scope = (NovaScope)rawScope;
var defineScope = _inClassDefine ? scope : scope.GlobalScope;
_inClassDefine = true;
NovaClass parent;
if (rawParent == null)
{
if (scope.GlobalScope["Object"] == null)
{
scope.GlobalScope["Object"] = Nova.Box(typeof(object));
}
parent = scope.GlobalScope["Object"];
}
else
{
var dParent = Resolve(rawParent as string, scope);
if (dParent == null)
{
_inClassDefine = false;
return(null);
}
if (dParent is Type)
{
parent = Nova.Box(dParent);
}
else
{
parent = dParent as NovaClass;
}
if (parent == null)
{
_inClassDefine = false;
return(null);
}
}
var name = (string)rawName;
_className = name;
var @class = new NovaClass {
Name = _className, Parent = parent
};
var xScope = new NovaScope(scope);
xScope["self"] = @class;
xScope[_className] = @class;
_currentClassScope = xScope;
contents.ForEach(content => {
if (content is IncludeExpression)
{
// We only include modules here so make sure this include references a module
var names = ((IncludeExpression)content).Names;
dynamic module = null;
var index = 0;
names.ForEach(mname => {
if ((module is NovaModule))
{
module = module.Context[mname];
}
else if (index == 0)
{
module = scope[mname];
}
index = index + 1;
});
if (module != null)
{
if (module is NovaModule)
{
((NovaModule)module).Contents.ForEach(mcon => {
if (mcon is NovaFunction)
{
if ((mcon as NovaFunction).IsSingleton ||
(mcon as NovaFunction).Name == "new")
{
NovaClass.AddMethod(@class.ClassMethods, mcon as NovaFunction);
}
else
{
NovaClass.AddMethod(@class.InstanceMethods, mcon as NovaFunction);
}
if (@class.RemovedMethods.Contains((mcon as NovaFunction).Name))
{
@class.RemovedMethods.Remove((mcon as NovaFunction).Name);
}
if (@class.UndefinedMethods.Contains((mcon as NovaFunction).Name))
{
@class.UndefinedMethods.Remove((mcon as NovaFunction).Name);
}
}
});
xScope.MergeWithScope(module.Context);
}
else if (module is NovaClass)
{
xScope[((NovaClass)module).Name] = module;
}
}
}
});
contents.ForEach(content => {
if (!(content is IncludeExpression))
{
var result = CompilerServices.CompileExpression(content, xScope);
if (result is NovaFunction)
{
if ((result as NovaFunction).IsSingleton || (result as NovaFunction).Name == "new")
{
NovaClass.AddMethod(@class.ClassMethods, result as NovaFunction);
}
else
{
NovaClass.AddMethod(@class.InstanceMethods, result as NovaFunction);
}
if (@class.RemovedMethods.Contains((result as NovaFunction).Name))
{
@class.RemovedMethods.Remove((result as NovaFunction).Name);
}
if (@class.UndefinedMethods.Contains((result as NovaFunction).Name))
{
@class.UndefinedMethods.Remove((result as NovaFunction).Name);
}
}
}
});
if ([email protected]("new"))
{
NovaClass.AddMethod(@class.ClassMethods, new NovaFunction("new", new List <FunctionArgument>(),
NovaExpression.NovaBlock(
NovaExpression.Return(new List <FunctionArgument> {
new FunctionArgument(null, NovaExpression.Variable(Expression.Constant("self")))
}),
Expression.Label(NovaParser.ReturnTarget, Expression.Constant(null, typeof(object)))),
new NovaScope()));
}
@class.Context = xScope;
defineScope[@class.Name] = @class;
_inClassDefine = false;
return(@class);
}
}
internal static dynamic DefineCategory(NovaClass @class, List <Expression> contents, object rawScope)
{
lock (_classDefineLock) {
var scope = (NovaScope)rawScope;
_inClassDefine = true;
_className = @class.Name;
scope["self"] = @class;
scope[_className] = @class;
_currentClassScope = scope;
contents.ForEach(content => {
if (content is IncludeExpression)
{
// We only include modules here so make sure this include references a module
var names = ((IncludeExpression)content).Names;
dynamic module = null;
var index = 0;
names.ForEach(mname => {
if (module != null && (module is NovaModule))
{
module = module.Context[mname];
}
else if (index == 0)
{
module = scope[mname];
}
index = index + 1;
});
if (module != null)
{
if (module is NovaModule)
{
((NovaModule)module).Contents.ForEach(mcon => {
if (mcon is NovaFunction)
{
if ((mcon as NovaFunction).IsSingleton ||
(mcon as NovaFunction).Name == "new")
{
NovaClass.AddMethod(@class.ClassMethods, mcon as NovaFunction);
}
else
{
NovaClass.AddMethod(@class.InstanceMethods, mcon as NovaFunction);
}
if (@class.RemovedMethods.Contains((mcon as NovaFunction).Name))
{
@class.RemovedMethods.Remove((mcon as NovaFunction).Name);
}
if (@class.UndefinedMethods.Contains((mcon as NovaFunction).Name))
{
@class.UndefinedMethods.Remove((mcon as NovaFunction).Name);
}
}
});
scope.MergeWithScope(module.Context);
}
else if (module is NovaClass)
{
scope[((NovaClass)module).Name] = module;
}
}
}
});
contents.ForEach(content => {
if (!(content is IncludeExpression))
{
var result = CompilerServices.CompileExpression(content, scope);
if (result is NovaFunction)
{
if ((result as NovaFunction).IsSingleton)
{
NovaClass.AddMethod(@class.ClassMethods, result as NovaFunction);
}
else
{
NovaClass.AddMethod(@class.InstanceMethods, result as NovaFunction);
}
if (@class.RemovedMethods.Contains((result as NovaFunction).Name))
{
@class.RemovedMethods.Remove((result as NovaFunction).Name);
}
if (@class.UndefinedMethods.Contains((result as NovaFunction).Name))
{
@class.UndefinedMethods.Remove((result as NovaFunction).Name);
}
}
}
});
@class.Context.MergeWithScope(scope);
return(@class);
}
}
