function TJParser.Statement: PJStatement; の最適化 (Dmonkey-dev) - DMonkey

はじめまして。SHUNZOと申します。
件名の関数ですが以下のようにしたら速くなりそうな気がしませんか？

begin
  case Token of
    _FUNCTION: begin
      Result := FunctionDeclaration;
    end;
    LB: begin
      Result := BlockStatement;
    end;
    SC: begin
      Result := ExpressionStatement;
      if Assigned(Result) then Exit;

      Result := EmptyStatement;
    end;
    _IF: begin
      Result := IfStatement;
    end;
    _WHILE: begin
      Result := WhileStatement;
    end;
    _FOR: begin
      Result := ForStatement;
    end;
    _CONTINUE: begin
      Result := ContinueStatement;
    end;
    _BREAK: begin
      Result := BreakStatement;
    end;
    _RETURN: begin
      Result := ReturnStatement;
    end;
    _SWITCH: begin
      Result := SwitchStatement;
    end;
    _VAR, _STATIC, _GLOBAL: begin
      Result := VarStatement;
    end;
    _TRY: begin
      Result := TryStatement;
      {
      if Assigned(Result) then Exit;

      Result := CatchStatement;
      if Assigned(Result) then Exit;

      Result := FinallyStatement;
      if Assigned(Result) then Exit;
      }
    end;
    _THROW: begin
      Result := ThrowStatement;
    end;
    _WITH: begin
      Result := WithStatement;
    end;
    _DO: begin
      Result := DoStatement;
    end;
    ATMARK: begin
      Result := ConditionalCompile;
    end;
    else Result:= nil;
  end;
end;

たいした変わらないかな。ご検討よろしくお願いいたします。

DMonkey

[Dmonkey-dev] function TJParser.Statement: PJStatement; の最適化