public string VisitFunctionStmt(Stmt.FunctionStmt stmt)
{
var builder = new StringBuilder();
builder.Append($"(fun {stmt.Name.Lexeme}(");
foreach (var param in stmt.Params)
{
if (param != stmt.Params[0])
{
builder.Append(" ");
}
builder.Append(param.Lexeme);
}
builder.Append(") ");
foreach (var body in stmt.Body)
{
builder.Append(body.Accept(this));
}
builder.Append(")");
return(builder.ToString());
}
public object VisitFunctionStmt(Stmt.FunctionStmt stmt)
{
Declare(stmt.Name);
Define(stmt.Name);
ResolveFunction(stmt, FunctionType.FUNCTION);
return(null);
}
private void ResolveFunction(Stmt.FunctionStmt function, FunctionType type)
{
var enclosingFunction = _currentFunction;
_currentFunction = type;
BeginScope();
foreach (var param in function.Params)
{
Declare(param);
Define(param);
}
Resolve(function.Body);
EndScope();
_currentFunction = enclosingFunction;
}
public LoxFunction(Stmt.FunctionStmt declaration, Environment closure, bool isInitializer)
{
Declaration = declaration;
Closure = closure;
IsInitializer = isInitializer;
}