public object Call(Interpreter interpreter, List <object> arguments)
{
// The environment when/where the function was declared.
CSLoxEnvironment environment = new CSLoxEnvironment(this.Closure);
for (int i = 0; i < functionDelcaration.Params.Count; ++i)
{
environment.Define(functionDelcaration.Params[i].Lexeme, arguments[i]);
}
try
{
interpreter.ExecuteBlock(functionDelcaration.Body, environment);
}
catch (ReturnValue returnValue) // ugh....
{
/// EArly returns in constructors eg ( init(){return;})
/// Allow it and return 'this'. constructors are weir,d
if (IsInitialiser)
{
return(Closure.GetAt(0, "this"));
}
return(returnValue.Value);
}
// Hack to ensure init() ie Constructors only ever return the instance 'this';
if (this.IsInitialiser)
{
return(Closure.GetAt(0, "this"));
}
return(null);
}
public LoxFunction Bind(LoxInstance instance)
{
CSLoxEnvironment environment = new CSLoxEnvironment(this.Closure);
environment.Define("this", instance);
// redelcared this function with the correct constext AT RUNTIME.
return(new LoxFunction(functionDelcaration, environment, IsInitialiser));
}
public object Call(Interpreter interpreter, List <object> arguments)
{
// The environment when/where the function was declared.
CSLoxEnvironment environment = new CSLoxEnvironment(this.Closure);
for (int i = 0; i < functionDeclaration.Params.Count; ++i)
{
environment.Define(functionDeclaration.Params[i].Lexeme, arguments[i]);
}
try
{
interpreter.ExecuteBlock(functionDeclaration.Body, environment);
}
catch (ReturnValue returnValue)
{
return(returnValue.Value);
}
return(null);
}
public LoxFunction(Stmt.Function functionDeclaration, CSLoxEnvironment closure)
{
Closure = closure;
this.functionDeclaration = functionDeclaration;
}
public LoxFunction(Stmt.Function functionDelcaration, CSLoxEnvironment closure, bool isInitialiser)
{
this.functionDelcaration = functionDelcaration;
Closure = closure;
IsInitialiser = isInitialiser;
}
public LoxFunction(Stmt.Function functionDelcaration, CSLoxEnvironment closure)
{
this.functionDelcaration = functionDelcaration;
Closure = closure;
}
