Viewing file:  Clone_blank_mixins.h (1.59 KB) -rw-rw-r--
Select action/file-type:
 (+) |  (+) |  (+) | Code (+) | Session (+) |  (+) | SDB (+) |  (+) |  (+) |  (+) |  (+) |  (+) |
/*
* phc -- the open source PHP compiler
* See doc/license/README.license for licensing information
*
* Clone mixins from a particular node, avoiding precisely inserting
* mixin following code everywhere.
*/
#ifndef PHC_CLONE_BLANK_MIXINS
#define PHC_CLONE_BLANK_MIXINS
#include "AST.h"
#include "HIR.h"
#include "MIR.h"
#include "AST_visitor.h"
#include "HIR_visitor.h"
#include "MIR_visitor.h"
// Derived from Collect_all_pointers.h. Collects all nodes in a tree.
template <class Node, class Visitor>
class Collect_all_nodes: virtual public Visitor, public virtual GC_obj
{
public:
Collect_all_nodes (List<Node*>* container)
: all_nodes (container) {};
List<Node*>* all_nodes;
public:
void pre_node (Node* in) { all_nodes->push_back (in); }
};
template
<
class Node,
class Visitor
>
class Clone_blank_mixins : public Visitor, public virtual GC_obj
{
private:
// if a node matches nothing, clone_mixin from here
Node* anchor;
// All the subnodes of the original nodes. We need to copy attributes not
// only from a node, but all its children too (deeply).
List<Node*>* deep_originals;
public:
Clone_blank_mixins (Node* anchor, List<Node*>* originals)
: anchor (anchor)
{
deep_originals = new List<Node*>;
foreach (Node* n, *originals)
{
n->visit (new Collect_all_nodes<Node, Visitor> (deep_originals));
}
}
void pre_node (Node* in)
{
foreach (Node* n, *deep_originals)
{
// TODO is there a problem with copying values markers here?
if (n->match (in))
in->clone_mixin_from (n);
else
in->clone_mixin_from (anchor);
}
}
};
#endif // PHC_CLONE_BLANK_MIXINS
|