[svn:parrot] r35591 - trunk/languages/pipp/docs

Author: bernhard
Date: Thu Jan 15 06:00:11 2009
New Revision: 35591

Modified:
   trunk/languages/pipp/docs/internals.pod

Log:
[Pipp] Mention plan to implement constanst as package vars.

Modified: trunk/languages/pipp/docs/internals.pod
==============================================================================
--- trunk/languages/pipp/docs/internals.pod	(original)
+++ trunk/languages/pipp/docs/internals.pod	Thu Jan 15 06:00:11 2009
@@ -23,7 +23,7 @@
 =head1 Bytecode generation
 
 The parse tree is transformed to a Parrot Abstrace Syntax Tree.
-PIR und Bytecode is theb generated from the PAST.
+PIR und Bytecode is then generated from the PAST.
 
 =head1 Variables
 
@@ -31,14 +31,37 @@
 
 =item globals in top file
 
+Lexical. Might need extra treatment.
+
 =item globals in included files
 
-=item class scope
+Lexical in scope of the included file.
+
+=item Class constants
+
+=item Class members
 
 =item function and method scope
 
+Lexical is scope of the function or method.
+
+=item $this
+
+Bound to register C<self>.
+
 =item constants
 
+Currently constants are stored in the hash ['pipp'; 'php_constants'].
+The functions C<define> and C<defined> access this package scoped hash.
+This approach works good enough for constants in the global namespace.
+For namespaced constants the above approach could be extended to
+consider the namespace part of the constant, the current namespace and
+the active namespace aliases.
+
+Another approach is to treat constants as namespaced variables and
+work with standard PAST techniques.
+Experiments using that approach are underway.
+
 =back
 
 =head1 Functions and closures
@@ -47,6 +70,8 @@
 
 =head2 Closures
 
+TODO: see C<t/php/closures.t>
+
 =head2 Internal functions
 
 =head1 Object orientation

• [svn:parrot] r35591 - trunk/languages/pipp/docs by bernhard