Introduce collection of clauses.

Clauses can have variables, so that they extend Declaration. But a
specification or a behavior can have a collection of other clauses, such
as a collection of behavior, represented by an identifier.

To build a collection of clauses, we need to instance the Collection
class with a preset clause and post-clone function. For each new offset
in the collection, the associated value is a clone from the preset
clause with the post-clone function applied on this clone. This
mechanism allows us to build modular collection of clauses.

1 files changed, 15 insertions, 3 deletions

diff --git a/Model/Behavior.php b/Model/Behavior.php
index c31da7f..852d1a7 100644
--- a/Model/Behavior.php
+++ b/Model/Behavior.php
@@ -66,7 +66,12 @@ from('Hoa')
 /**
  * \Hoa\Praspel\Model\Invariant
  */
--> import('Praspel.Model.Invariant');
+-> import('Praspel.Model.Invariant')
+
+/**
+ * \Hoa\Praspel\Model\Collection
+ */
+-> import('Praspel.Model.Collection');
 
 }
 
@@ -141,7 +146,15 @@ class Behavior extends Clause {
               break;
 
             case 'behavior':
-                $handle = new self($this);
+                $handle = new Collection(
+                    new self($this),
+                    function ( self $clause, $identifier ) {
+
+                        $clause->setIdentifier($identifier);
+
+                        return;
+                    }
+                );
               break;
 
             default:
@@ -169,7 +182,6 @@ class Behavior extends Clause {
      * Set identifier.
      *
      * @access  public
-     * @param   string  $identifier    Identifier.
      * @return  string
      */
     public function setIdentifier ( $identifier ) {