Changeset 284

Timestamp:

01/16/06 20:18:36 (3 years ago)

Author:

athomas

Message:

• Added some useful component introspection methods (get_component_definition() and get_component()).
  
• Component Manager? will raise a NotImplementedError if a there is no get_selected_implementation() callback for SelectedExtensionPoint.
  
• util.print_table() now takes the header as the first argument, which is more logical.
  

Files:

• pycrash/trunk/crash/component.py (modified) (1 diff)
• pycrash/trunk/crash/console.py (modified) (1 diff)
• pycrash/trunk/crash/decorators.py (modified) (1 diff)
• pycrash/trunk/crash/__init__.py (modified) (1 diff)
• pycrash/trunk/crash/network.py (modified) (1 diff)

pycrash/trunk/crash/component.py

@@ -225 +225 @@
-        return dict((c.__name__, c) for c in ComponentMeta._components \
-            if hasattr(c, '_implements') and interface in c._implements)
+
+    def get_component_definition(self, name, interface = None):
+        """ Get a component class by name. Does not instantiate the component. """
+        if interface is not None:
+            try:
+                return get_implementors(interface)[name]
+            except KeyError:
+                raise ComponentError, 'No component named %s implementing %s.' % (name, interface.__name__)
+        for c in ComponentMeta._components:
+            if c.__name__ == name:
+                return c
+        raise ComponentError, 'No component named %s.' % name
+
+    def get_component(self, name, interface = None):
+        """ Get a component instance by name. """
+        return self[self.get_component_definition(name, interface)]
+
+    def get_selected_implementation(self, interface):
+        """ Get the singleton implementation of interface. Should return the
+            name of the component to use. """
+        raise NotImplementedError

pycrash/trunk/crash/console.py

@@ -179 +179 @@
-    return out.rstrip()
-
-table, header = Non
+header, tabl
-    """Print a list of lists as a table, so that columns line up nicely.
-    header, if specified, will be printed as the first row. sep is the

pycrash/trunk/crash/decorators.py

@@ -1 +1 @@
-import inspect, re, types
+
+__all__ = [ 'validate', 'abstract', 'default_members' ]
-
-class validate:

pycrash/trunk/crash/__init__.py

@@ +1 @@
+import classmaker, component, console, decorators, loader, network, \
+    singleton, threadpool, util

pycrash/trunk/crash/network.py

@@ -14 +14 @@
-        
-        For the purposes of this class, an "int" representation of a network is
-
-
+
+
+
-    """
-