On the way to alternative inputs. Still needs unit and integration testing

github/GithubObjects/GithubObject/ArgumentsChecker.py

@@ -37,3 +37,21 @@ class Parameters:
 
 def NoParameters():
     return Parameters( [], [] )
+
+class Alternative:
+    def __init__( self, *checkers ):
+        self.__checkers = checkers
+
+    def check( self, args, kwds ):
+        # Try the n - 1 first checkers
+        for checker in self.__checkers[ : -1 ]:
+            try:
+                return checker.check( args, kwds )
+            except TypeError:
+                pass
+        # Use the last checker
+        # This way, the call stack will point to an actual validation failure
+        return self.__checkers[ -1 ].check( args, kwds )
+
+    def documentParameters( self ):
+        return " <" + "> or <".join( checker.documentParameters() for checker in self.__checkers ) + "> "

github/GithubObjects/PullRequest.py

@@ -33,7 +33,7 @@ PullRequest = GithubObject(
     ExternalListOfObjects( "comments", "comment", PullRequestComment,
         ListGetable( Parameters( [], [] ), __modifyAttributesForObjectsReferingReferedRepo ),
         ElementGetable( Parameters( [ "id" ], [] ), __modifyAttributesForObjectsReferingReferedRepo ),
-        ElementCreatable( Parameters( [ "body", "commit_id", "path", "position" ], [] ), __modifyAttributesForObjectsReferingReferedRepo ),
+        ElementCreatable( Alternative( Parameters( [ "body", "commit_id", "path", "position" ], [] ), Parameters( [ "body", "in_reply_to" ], [] ) ), __modifyAttributesForObjectsReferingReferedRepo ),
     ),
     MethodFromCallable( "is_merged", Parameters( [], [] ), __pullRequestIsMerged, SimpleTypePolicy( "bool" ) ),
     MethodFromCallable( "merge", Parameters( [], [ "commit_message" ] ), __mergePullRequest, SimpleTypePolicy( None ) ),

github/GithubObjects/Repository.py

@@ -134,6 +134,6 @@ Repository._addAttributePolicy( SeveralAttributePolicies( [
     ExternalListOfObjects( "pulls", "pull", PullRequest,
         ListGetable( Parameters( [], [ "state" ] ), __modifyAttributesForObjectsReferingRepo ),
         ElementGetable( Parameters( [ "number" ], [] ), __modifyAttributesForObjectsReferingRepo ),
-        ElementCreatable( Parameters( [ "title", "body", "base", "head" ], [] ), __modifyAttributesForObjectsReferingRepo ),
+        ElementCreatable( Alternative( Parameters( [ "title", "body", "base", "head" ], [] ), Parameters( [ "issue", "base", "head" ], [] ) ), __modifyAttributesForObjectsReferingRepo ),
     ),
 ] ) )