本文整理汇总了C++中cLuaState::IsValid方法的典型用法代码示例。如果您正苦于以下问题：C++ cLuaState::IsValid方法的具体用法？C++ cLuaState::IsValid怎么用？C++ cLuaState::IsValid使用的例子？那么恭喜您, 这里精选的方法代码示例或许可以为您提供帮助。您也可以进一步了解该方法所在类cLuaState的用法示例。
在下文中一共展示了cLuaState::IsValid方法的2个代码示例，这些例子默认根据受欢迎程度排序。您可以为喜欢或者感觉有用的代码点赞，您的评价将有助于系统推荐出更棒的C++代码示例。
示例1: CallFunctionWithForeignParams
int cLuaState::CallFunctionWithForeignParams(
const AString & a_FunctionName,
cLuaState & a_SrcLuaState,
int a_SrcParamStart,
int a_SrcParamEnd
)
{
ASSERT(IsValid());
ASSERT(a_SrcLuaState.IsValid());
// Store the stack position before any changes
int OldTop = lua_gettop(m_LuaState);
// Push the function to call, including the error handler:
if (!PushFunction(a_FunctionName.c_str()))
{
LOGWARNING("Function '%s' not found", a_FunctionName.c_str());
lua_settop(m_LuaState, OldTop);
return -1;
}
// Copy the function parameters to the target state
if (CopyStackFrom(a_SrcLuaState, a_SrcParamStart, a_SrcParamEnd) < 0)
{
// Something went wrong, fix the stack and exit
lua_settop(m_LuaState, OldTop);
m_NumCurrentFunctionArgs = -1;
m_CurrentFunctionName.clear();
return -1;
}
// Call the function, with an error handler:
int s = lua_pcall(m_LuaState, a_SrcParamEnd - a_SrcParamStart + 1, LUA_MULTRET, OldTop + 1);
if (ReportErrors(s))
{
LOGWARN("Error while calling function '%s' in '%s'", a_FunctionName.c_str(), m_SubsystemName.c_str());
// Reset the stack:
lua_settop(m_LuaState, OldTop);
// Reset the internal checking mechanisms:
m_NumCurrentFunctionArgs = -1;
m_CurrentFunctionName.clear();
// Make Lua think everything is okay and return 0 values, so that plugins continue executing.
// The failure is indicated by the zero return values.
return 0;
}
// Reset the internal checking mechanisms:
m_NumCurrentFunctionArgs = -1;
m_CurrentFunctionName.clear();
// Remove the error handler from the stack:
lua_remove(m_LuaState, OldTop + 1);
// Return the number of return values:
return lua_gettop(m_LuaState) - OldTop;
}示例2:
void cLuaState::cRef::RefStack(cLuaState & a_LuaState, int a_StackPos)
{
ASSERT(a_LuaState.IsValid());
if (m_LuaState != nullptr)
{
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);
}