Extension Classes for Python, pulled from Zope 2.1.1 as they (and

especially Acquisition) can be quite useful in their own right.

EC fixes a wart in CPython: Python classes can't use C-implemented types
as base classes. EC-based C classes can be subclassed by python, and in
fact python classes can use pure mixin EC C classes so that you can have
speed critical methods of a class in C and the rest in Python.

EC also provides a mixin called Acquisition, which provides a kind of
contextual inheritance.  If an object can't find the data/method in
itself or by looking up it's list of base classes, it will then try to
acquire the thing up through its containers (or other context).

5 files changed, 92 insertions, 0 deletions

diff --git a/lang/py-extclass/Makefile b/lang/py-extclass/Makefile
new file mode 100644
index 00000000000..d778b2d96b3
--- /dev/null
+++ b/lang/py-extclass/Makefile
@@ -0,0 +1,42 @@
+# $NetBSD: Makefile,v 1.1.1.1 1999/12/30 21:37:02 tsarna Exp $
+#
+
+DISTNAME=	Zope-2.1.1-src
+PKGNAME=	py-extclass-2.1.1
+CATEGORIES=	www
+MASTER_SITES=   http://www.zope.org/Products/Zope/2.1.1/
+EXTRACT_SUFX=	.tgz
+
+MAINTAINER=	tsarna@netbsd.org
+HOMEPAGE=	http://www.digicool.com/releases/ExtensionClass
+
+DEPENDS+=	python-1.5.2:../../lang/python
+
+ALL_TARGET=	default
+PYTHON_LIBDIR=		${LOCALBASE}/lib/python1.5/site-packages
+PYTHON_CONFIGDIR=	${LOCALBASE}/lib/python1.5/config
+EXTRACT_ELEMENTS=       Zope-2.1.1-src/lib/Components/ExtensionClass
+
+WRKSRC=		${WRKDIR}/Zope-2.1.1-src/lib/Components/ExtensionClass
+
+do-configure:
+	( cd ${WRKSRC} ;\
+	  ${CP} ${PYTHON_CONFIGDIR}/Makefile.pre.in . ;\
+	  ${MAKE} -f Makefile.pre.in boot)
+
+post-build:
+	(cd ${WRKSRC}; ${LOCALBASE}/bin/python ${PREFIX}/lib/python1.5/compileall.py .)
+	(cd ${WRKSRC}; ${LOCALBASE}/bin/python -O ${PREFIX}/lib/python1.5/compileall.py .)
+
+do-install:
+	(cd ${WRKSRC}; ${INSTALL_DATA} ExtensionClass.h \
+		${LOCALBASE}/include/python1.5 ; \
+	${INSTALL_SCRIPT} Xaq.py* ComputedAttribute.py* ${PYTHON_LIBDIR} ; \
+	${INSTALL_PROGRAM} *.so ${PYTHON_LIBDIR} ; \
+	${INSTALL_SCRIPT_DIR} ${PYTHON_LIBDIR}/extclass_test ; \
+	${INSTALL_SCRIPT} test_*.py* ${PYTHON_LIBDIR}/extclass_test ; \
+	${INSTALL_DATA_DIR} ${PYTHON_LIBDIR}/extclass_doc ; \
+	${INSTALL_DATA} *.txt *.stx ${PYTHON_LIBDIR}/extclass_doc)
+	
+
+.include "../../mk/bsd.pkg.mk"
diff --git a/lang/py-extclass/files/md5 b/lang/py-extclass/files/md5
new file mode 100644
index 00000000000..65b213d151d
--- /dev/null
+++ b/lang/py-extclass/files/md5
@@ -0,0 +1,3 @@
+$NetBSD: md5,v 1.1.1.1 1999/12/30 21:37:02 tsarna Exp $
+
+MD5 (Zope-2.1.1-src.tgz) = 170e9304b2b2ee271eb0f8a0aa768fc9
diff --git a/lang/py-extclass/pkg/COMMENT b/lang/py-extclass/pkg/COMMENT
new file mode 100644
index 00000000000..936b66ac844
--- /dev/null
+++ b/lang/py-extclass/pkg/COMMENT
@@ -0,0 +1 @@
+Python-extensible C "classes" and Acquisition for Python
diff --git a/lang/py-extclass/pkg/DESCR b/lang/py-extclass/pkg/DESCR
new file mode 100644
index 00000000000..0ef5da230f6
--- /dev/null
+++ b/lang/py-extclass/pkg/DESCR
@@ -0,0 +1,17 @@
+ExtensionClasses is a lightweight mechanism has been developed for
+making Python extension types more class-like.  Classes can be developed
+in an extension language, such as C or C++, and these classes can be
+treated like other python classes.  They can be sub-classed in python,
+they provide access to method documentation strings, and they can be
+used to directly create new instances.
+
+Extension classes provide additional extensions to class and instance
+semantics, including A protocol for accessing subobjects "in the context
+of" their containers. This is used to implement custom method types and
+environmental acquisition*. A protocol for overriding method call
+semantics. This is used to implement "synchonized" classes and could be
+used to implement argument type checking. A protocol for class
+initialization that supports execution of a special __class_init__
+method after a class has been initialized.
+
+(* see http://www.digicool.com/releases/ExtensionClass/Acquisition.html)
diff --git a/lang/py-extclass/pkg/PLIST b/lang/py-extclass/pkg/PLIST
new file mode 100644
index 00000000000..41449d5bf09
--- /dev/null
+++ b/lang/py-extclass/pkg/PLIST
@@ -0,0 +1,29 @@
+@comment $NetBSD: PLIST,v 1.1.1.1 1999/12/30 21:37:02 tsarna Exp $
+include/python1.5/ExtensionClass.h
+lib/python1.5/site-packages/Acquisition.so
+lib/python1.5/site-packages/ComputedAttribute.so
+lib/python1.5/site-packages/ComputedAttribute.py
+lib/python1.5/site-packages/ComputedAttribute.pyc
+lib/python1.5/site-packages/ComputedAttribute.pyo
+lib/python1.5/site-packages/ExtensionClass.so
+lib/python1.5/site-packages/MethodObject.so
+lib/python1.5/site-packages/Missing.so
+lib/python1.5/site-packages/MultiMapping.so
+lib/python1.5/site-packages/Record.so
+lib/python1.5/site-packages/Sync.so
+lib/python1.5/site-packages/ThreadLock.so
+lib/python1.5/site-packages/Xaq.py
+lib/python1.5/site-packages/Xaq.pyc
+lib/python1.5/site-packages/Xaq.pyo
+lib/python1.5/site-packages/extclass_doc/COPYRIGHT.txt
+lib/python1.5/site-packages/extclass_doc/Acquisition.stx
+lib/python1.5/site-packages/extclass_doc/ExtensionClass.stx
+lib/python1.5/site-packages/extclass_doc/MultiMapping.stx
+lib/python1.5/site-packages/extclass_test/test_Sync.py
+lib/python1.5/site-packages/extclass_test/test_ThreadLock.py
+lib/python1.5/site-packages/extclass_test/test_acquisition.py
+lib/python1.5/site-packages/extclass_test/test_add.py
+lib/python1.5/site-packages/extclass_test/test_binding.py
+lib/python1.5/site-packages/extclass_test/test_explicit_acquisition.py
+lib/python1.5/site-packages/extclass_test/test_func_attr.py
+lib/python1.5/site-packages/extclass_test/test_method_hook.py