closedKeyCallback on XMLParser (as asked by Kenny)

svn-id: r32909

common/xmlparser.cpp

@@ -194,6 +194,11 @@ bool XMLParser::parse() {
 
 			case kParserNeedPropertyName:
 				if (activeClosure) {
+					if (!closedKeyCallback(_activeKey.top()->name)) {
+						parserError("Missing data when closing key '%s'.", _activeKey.top()->name.c_str()); 
+						break;
+					}
+
 					activeClosure = false;
 					delete _activeKey.pop();
 

common/xmlparser.h

@@ -203,6 +203,20 @@ protected:
 		return false;
 	}
 
+	/**
+	 * The closed key callback function must be overloaded by inheriting classes to
+	 * implement parser-specific functions.
+	 *
+	 * The closedKeyCallback is issued once a key has been finished parsing, to let
+	 * the parser verify that all the required subkeys, etc, were included.
+	 *
+	 * Returns true if the key was properly closed, false otherwise.
+	 * By default, all keys are properly closed.
+	 */
+	virtual bool closedKeyCallback(Common::String keyName) {
+		return true;
+	}
+
 	/**
 	 * Parses the value of a given key. There's no reason to overload this.
 	 */