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authormadmaxoft <github@xoft.cz>2014-02-09 18:39:22 +0100
committermadmaxoft <github@xoft.cz>2014-02-09 18:39:22 +0100
commit310a25c45697dbf3b1de6b0363f529691c422bf1 (patch)
tree4e8e8a427ac534d33877fe48a18991024b1866de /src/Bindings
parentAdded AllToLua.pkg to MSVC project files. (diff)
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Diffstat (limited to 'src/Bindings')
-rw-r--r--src/Bindings/LuaState.cpp52
-rw-r--r--src/Bindings/LuaState.h17
2 files changed, 60 insertions, 9 deletions
diff --git a/src/Bindings/LuaState.cpp b/src/Bindings/LuaState.cpp
index ac5ce47e1..22f342467 100644
--- a/src/Bindings/LuaState.cpp
+++ b/src/Bindings/LuaState.cpp
@@ -1240,13 +1240,21 @@ int cLuaState::ReportFnCallErrors(lua_State * a_LuaState)
///////////////////////////////////////////////////////////////////////////////////////////////////////////////////////
// cLuaState::cRef:
+cLuaState::cRef::cRef(void) :
+ m_LuaState(NULL),
+ m_Ref(LUA_REFNIL)
+{
+}
+
+
+
+
+
cLuaState::cRef::cRef(cLuaState & a_LuaState, int a_StackPos) :
- m_LuaState(a_LuaState)
+ m_LuaState(NULL),
+ m_Ref(LUA_REFNIL)
{
- ASSERT(m_LuaState.IsValid());
-
- lua_pushvalue(m_LuaState, a_StackPos); // Push a copy of the value at a_StackPos onto the stack
- m_Ref = luaL_ref(m_LuaState, LUA_REGISTRYINDEX);
+ RefStack(a_LuaState, a_StackPos);
}
@@ -1255,12 +1263,42 @@ cLuaState::cRef::cRef(cLuaState & a_LuaState, int a_StackPos) :
cLuaState::cRef::~cRef()
{
- ASSERT(m_LuaState.IsValid());
+ if (m_LuaState != NULL)
+ {
+ UnRef();
+ }
+}
+
+
+
+
+
+void cLuaState::cRef::RefStack(cLuaState & a_LuaState, int a_StackPos)
+{
+ ASSERT(a_LuaState.IsValid());
+ if (m_LuaState != NULL)
+ {
+ UnRef();
+ }
+ m_LuaState = &a_LuaState;
+ lua_pushvalue(a_LuaState, a_StackPos); // Push a copy of the value at a_StackPos onto the stack
+ m_Ref = luaL_ref(a_LuaState, LUA_REGISTRYINDEX);
+}
+
+
+
+
+
+void cLuaState::cRef::UnRef(void)
+{
+ ASSERT(m_LuaState->IsValid()); // The reference should be destroyed before destroying the LuaState
if (IsValid())
{
- luaL_unref(m_LuaState, LUA_REGISTRYINDEX, m_Ref);
+ luaL_unref(*m_LuaState, LUA_REGISTRYINDEX, m_Ref);
}
+ m_LuaState = NULL;
+ m_Ref = LUA_REFNIL;
}
diff --git a/src/Bindings/LuaState.h b/src/Bindings/LuaState.h
index dda45bb28..1c9c99e69 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;
} ;