[svn r63806] adding a MultiAPI helper for managing plugin APIs.

--HG--
branch : trunk

py/__init__.py

@@ -25,8 +25,8 @@ version = "1.0.0b1"
 
 initpkg(__name__,
     description = "pylib and py.test: agile development and test support library",
-    revision = int('$LastChangedRevision: 63580 $'.split(':')[1][:-1]),
-    lastchangedate = '$LastChangedDate: 2009-04-03 19:45:25 +0200 (Fri, 03 Apr 2009) $',
+    revision = int('$LastChangedRevision: 63806 $'.split(':')[1][:-1]),
+    lastchangedate = '$LastChangedDate: 2009-04-07 22:22:52 +0200 (Tue, 07 Apr 2009) $',
     version = version, 
     url = "http://pylib.org", 
     download_url = "http://codespeak.net/py/%s/download.html" % version,
@@ -57,6 +57,7 @@ initpkg(__name__,
     '_com.PyPlugins'         : ('./_com.py', 'PyPlugins'), 
     '_com.MultiCall'         : ('./_com.py', 'MultiCall'), 
     '_com.pyplugins'         : ('./_com.py', 'pyplugins'), 
+    '_com.MultiAPI'          : ('./_com.py', 'MultiAPI'), 
 
     # py lib cmdline tools 
     'cmdline.pytest'         : ('./cmdline/pytest.py', 'main',),

py/_com.py

@@ -158,4 +158,26 @@ class PyPlugins:
         #print "calling anonymous hooks", args, kwargs
         MultiCall(self.listattr("pyevent"), eventname, args, kwargs).execute()
 
+
+class MultiAPI:
+    def __init__(self, apiclass, plugins, prefix):
+        for fullname in vars(apiclass):
+            if fullname[:2] != "__":
+                assert fullname.startswith(prefix)
+                name = fullname[len(prefix):]
+                mm = CallMaker(plugins, fullname)
+                setattr(self, name, mm)
+
+class CallMaker:
+    def __init__(self, plugins, name):
+        self.plugins = plugins
+        self.name = name 
+
+    def __repr__(self):
+        return "<MulticallMaker %r %s>" %(self.name, self.plugins)
+
+    def __call__(self, *args, **kwargs):
+        mc = MultiCall(self.plugins.listattr(self.name), *args, **kwargs)
+        return mc.execute()
+
 pyplugins = PyPlugins()

py/misc/testing/test_com.py

@@ -2,6 +2,7 @@
 import py
 import os
 from py._com import PyPlugins, MultiCall
+from py._com import MultiAPI
 
 pytest_plugins = "xfail"
 
@@ -248,3 +249,22 @@ class TestPyPluginsEvents:
         plugins.notify("name", 13, x=15)
         assert l == [(13, ), {'x':15}]
 
+
+class TestMulticallMaker:
+    def test_happypath(self):
+        plugins = PyPlugins()
+        class Api:
+            def xyz_hello(self, arg):
+                pass
+
+        mcm = MultiAPI(apiclass=Api, plugins=plugins, prefix="xyz_")
+        assert hasattr(mcm, 'hello')
+        assert repr(mcm.hello).find("xyz_hello") != -1
+        assert not hasattr(mcm, 'xyz_hello')
+        class Plugin:
+            def xyz_hello(self, arg):
+                return arg + 1
+        plugins.register(Plugin())
+        l = mcm.hello(3)
+        assert l == [4]
+        assert not hasattr(mcm, 'world')