Ability to add user data to ParserStack (this is just a hack, there should be a better solution, e.g. to derive from ParserStack)

1 files changed, 15 insertions, 2 deletions

diff --git a/src/core/parser/ParserStack.hpp b/src/core/parser/ParserStack.hpp
index 4af88f9..6296dff 100644
--- a/src/core/parser/ParserStack.hpp
+++ b/src/core/parser/ParserStack.hpp
@@ -322,6 +322,11 @@ private:
 	std::stack<HandlerInstance> stack;
 
 	/**
+	 * Reference at some user defined data.
+	 */
+	void *userData;
+
+	/**
 	 * Used internally to get all expected command names for the given state
 	 * (does not work if the current Handler instance allows arbitrary
 	 * children). This function is used to build error messages.
@@ -340,8 +345,9 @@ public:
 	 * corresponding HandlerDescriptor instances.
 	 */
 	ParserStack(ParserContext &ctx,
-	            const std::multimap<std::string, HandlerDescriptor> &handlers)
-	    : ctx(ctx), handlers(handlers){};
+	            const std::multimap<std::string, HandlerDescriptor> &handlers,
+	            void *userData = nullptr)
+	    : ctx(ctx), handlers(handlers), userData(userData){};
 
 	/**
 	 * Returns the state the ParserStack instance currently is in.
@@ -419,6 +425,13 @@ public:
 	 * @return a reference to the parser context.
 	 */
 	ParserContext &getContext() { return ctx; }
+
+	/**
+	 * Returns the user defined data.
+	 *
+	 * @return the userData pointer that was given in the constructor.
+	 */
+	void *getUserData() { return userData; }
 };
 }