Re: Suggestion: echo function(var)[0];

On 06/04/2010 10:00 AM, Richard Quadling wrote:

On 4 June 2010 08:18, mathieu.suen<mathieu.suen@easyflirt.com> wrote:

Hi Why not something more generic. Someone could think of a ValueNode. Then it could be use for object, array, any primitive type ... I will take the ValueNode as a non terminal grammar node. So first we could do that: ValueNode->method(); ValueNode::sMethod(); ValueNode[]; foo(ValueNode); echo ValueNode; $e = ValueNode; ... And a ValueNode could be define as: ValueNode :

      NewStatement
    | FunctionCall
    | PrimitiveValue
    | '(' ValueNode ')'
    | ...;

This would allow all this syntax: (new A())->foo(); foo(new A()); foo->bar()[1]; foo()[5]; and many others. On 06/04/2010 03:19 AM, Kalle Sommer Nielsen wrote:

     
Hi Tig

2010/6/4 Tig<tigger.on@gmail.com>:

       
Would be at all possible to implement this kind of shortcut?

Its called array-dereferencing and it was proposed countless times, including by myself. There is an RFC for this[1] and it was planned on the old PHP6 todo at the PDT[2]. [1] http://wiki.php.net/rfc/functionarraydereferencing [2] http://wiki.php.net/summits/pdmnotesmay09#php_6 (see point #13)

--Mathieu Suen

     Not an expert in this area, but does this mechanism limit you to using

single dimensional arrays? Of course not as soon as you add array access to a ValueNode ValueNode

    ..
    | ArrayAccess
    ...;

This is very simple and it can refactor greatly the parser. -- Mathieu Suen