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-rw-r--r--src/Bindings/LuaState.h20
1 files changed, 18 insertions, 2 deletions
diff --git a/src/Bindings/LuaState.h b/src/Bindings/LuaState.h
index dda45bb28..b9bf10142 100644
--- a/src/Bindings/LuaState.h
+++ b/src/Bindings/LuaState.h
@@ -65,14 +65,27 @@ class cLuaState
{
public:
- /** Used for storing references to object in the global registry */
+ /** Used for storing references to object in the global registry.
+ Can be bound (contains a reference) or unbound (doesn't contain reference).
+ The reference can also be reset by calling RefStack(). */
class cRef
{
public:
+ /** Creates an unbound reference object. */
+ cRef(void);
+
/** Creates a reference in the specified LuaState for object at the specified StackPos */
cRef(cLuaState & a_LuaState, int a_StackPos);
+
~cRef();
+ /** Creates a reference to Lua object at the specified stack pos, binds this object to it.
+ Calls UnRef() first if previously bound to another reference. */
+ void RefStack(cLuaState & a_LuaState, int a_StackPos);
+
+ /** Removes the bound reference, resets the object to Unbound state. */
+ void UnRef(void);
+
/** Returns true if the reference is valid */
bool IsValid(void) const {return (m_Ref != LUA_REFNIL); }
@@ -80,7 +93,7 @@ public:
operator int(void) const { return m_Ref; }
protected:
- cLuaState & m_LuaState;
+ cLuaState * m_LuaState;
int m_Ref;
} ;
@@ -820,6 +833,9 @@ public:
/** Returns true if the specified parameters on the stack are functions; also logs warning if not */
bool CheckParamFunction(int a_StartParam, int a_EndParam = -1);
+ /** Returns true if the specified parameters on the stack are functions or nils; also logs warning if not */
+ bool CheckParamFunctionOrNil(int a_StartParam, int a_EndParam = -1);
+
/** Returns true if the specified parameter on the stack is nil (indicating an end-of-parameters) */
bool CheckParamEnd(int a_Param);