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// ManualBindings.h
// Declares the cManualBindings class used as a namespace for functions exported to the Lua API manually
#pragma once
#include "LuaState.h"
// fwd:
struct tolua_Error;
class cPluginLua;
/** Provides namespace for the bindings. */
class cManualBindings
{
public:
/** Binds all the manually implemented functions to tolua_S. */
static void Bind(lua_State * tolua_S);
protected:
/** Binds the manually implemented cNetwork-related API to tolua_S.
Implemented in ManualBindings_Network.cpp. */
static void BindNetwork(lua_State * tolua_S);
/** Binds the manually implemented cRankManager glue code to tolua_S.
Implemented in ManualBindings_RankManager.cpp. */
static void BindRankManager(lua_State * tolua_S);
/** Binds the manually implemented cWorld API functions to tolua_S.
Implemented in ManualBindings_World.cpp. */
static void BindWorld(lua_State * tolua_S);
/** Binds the manually implemented cBlockArea API functions to tlua_S.
Implemented in ManualBindings_BlockArea.cpp. */
static void BindBlockArea(lua_State * tolua_S);
public:
// Helper functions:
static cPluginLua * GetLuaPlugin(lua_State * L);
static int tolua_do_error(lua_State * L, const char * a_pMsg, tolua_Error * a_pToLuaError);
static int vlua_do_error(lua_State * L, const char * a_pFormat, fmt::printf_args a_ArgList);
template <typename... Args>
static int lua_do_error(lua_State * L, const char * a_Format, const Args & ... a_Args)
{
return vlua_do_error(L, a_Format, fmt::make_printf_args(a_Args...));
}
/** Binds the DoWith(ItemName) functions of regular classes. */
template <
class Ty1,
class Ty2,
bool (Ty1::*DoWithFn)(const AString &, cFunctionRef<bool(Ty2 &)>)
>
static int DoWith(lua_State * tolua_S)
{
// Check params:
cLuaState L(tolua_S);
if (
!L.CheckParamString(2) ||
!L.CheckParamFunction(3)
)
{
return 0;
}
// Get parameters:
Ty1 * Self;
AString ItemName;
cLuaState::cRef FnRef;
L.GetStackValues(1, Self, ItemName, FnRef);
if (Self == nullptr)
{
return lua_do_error(tolua_S, "Error in function call '#funcname#': Invalid 'self'");
}
if (ItemName.empty() || (ItemName[0] == 0))
{
return lua_do_error(tolua_S, "Error in function call '#funcname#': Expected a non-empty string for parameter #1");
}
if (!FnRef.IsValid())
{
return lua_do_error(tolua_S, "Error in function call '#funcname#': Expected a valid callback function for parameter #2");
}
// Call the DoWith function:
bool res = (Self->*DoWithFn)(ItemName, [&](Ty2 & a_Item)
{
bool ret = false;
L.Call(FnRef, &a_Item, cLuaState::Return, ret);
return ret;
}
);
// Push the result as the return value:
L.Push(res);
return 1;
}
/** Template for static functions DoWith(ItemName), on a type that has a static ::Get() function. */
template <
class Ty1,
class Ty2,
bool (Ty1::*DoWithFn)(const AString &, cFunctionRef<bool(Ty2 &)>)
>
static int StaticDoWith(lua_State * tolua_S)
{
// Check params:
cLuaState L(tolua_S);
if (
!L.CheckParamString(2) ||
!L.CheckParamFunction(3)
)
{
return 0;
}
// Get parameters:
AString ItemName;
cLuaState::cRef FnRef;
L.GetStackValues(2, ItemName, FnRef);
if (ItemName.empty() || (ItemName[0] == 0))
{
return lua_do_error(tolua_S, "Error in function call '#funcname#': Expected a non-empty string for parameter #1");
}
if (!FnRef.IsValid())
{
return lua_do_error(tolua_S, "Error in function call '#funcname#': Expected a valid callback function for parameter #2");
}
// Call the DoWith function:
bool res = (Ty1::Get()->*DoWithFn)(ItemName, [&](Ty2 & a_Item)
{
bool ret = false;
L.Call(FnRef, &a_Item, cLuaState::Return, ret);
return ret;
}
);
// Push the result as the return value:
L.Push(res);
return 1;
}
template <
class Ty1,
class Ty2,
bool (Ty1::*DoWithFn)(UInt32, cFunctionRef<bool(Ty2 &)>)
>
static int DoWithID(lua_State * tolua_S)
{
// Check params:
cLuaState L(tolua_S);
if (
!L.CheckParamNumber(2) ||
!L.CheckParamFunction(3)
)
{
return 0;
}
// Get parameters:
Ty1 * Self = nullptr;
UInt32 ItemID = 0;
cLuaState::cRef FnRef;
L.GetStackValues(1, Self, ItemID, FnRef);
if (Self == nullptr)
{
return lua_do_error(tolua_S, "Error in function call '#funcname#': Invalid 'self'");
}
if (!FnRef.IsValid())
{
return lua_do_error(tolua_S, "Error in function call '#funcname#': Expected a valid callback function for parameter #2");
}
// Call the DoWith function:
bool res = (Self->*DoWithFn)(ItemID, [&](Ty2 & a_Item)
{
bool ret = false;
L.Call(FnRef, &a_Item, cLuaState::Return, ret);
return ret;
}
);
// Push the result as the return value:
L.Push(res);
return 1;
}
template <
class Ty1,
class Ty2,
bool (Ty1::*ForEachFn)(cFunctionRef<bool(Ty2 &)>)
>
static int ForEach(lua_State * tolua_S)
{
// Check params:
cLuaState L(tolua_S);
if (
!L.CheckParamFunction(2) ||
!L.CheckParamEnd(3)
)
{
return 0;
}
// Get the params:
Ty1 * Self = nullptr;
cLuaState::cRef FnRef;
L.GetStackValues(1, Self, FnRef);
if (Self == nullptr)
{
return lua_do_error(tolua_S, "Error in function call '#funcname#': Invalid 'self'.");
}
if (!FnRef.IsValid())
{
return lua_do_error(tolua_S, "Error in function call '#funcname#': Expected a valid callback function for parameter #1");
}
// Call the enumeration:
bool res = (Self->*ForEachFn)([&](Ty2 & a_Item)
{
bool ret = false; // By default continue the enumeration
L.Call(FnRef, &a_Item, cLuaState::Return, ret);
return ret;
}
);
// Push the return value:
L.Push(res);
return 1;
}
/** Implements bindings for ForEach() functions in a class that is static (has a ::Get() static function). */
template <
class Ty1,
class Ty2,
bool (Ty1::*ForEachFn)(cFunctionRef<bool(Ty2 &)>)
>
static int StaticForEach(lua_State * tolua_S)
{
// Check params:
cLuaState L(tolua_S);
if (
!L.CheckParamFunction(2) ||
!L.CheckParamEnd(3)
)
{
return 0;
}
// Get the params:
cLuaState::cRef FnRef(L, 2);
if (!FnRef.IsValid())
{
return lua_do_error(tolua_S, "Error in function call '#funcname#': Expected a valid callback function for parameter #1");
}
// Call the enumeration:
bool res = (Ty1::Get()->*ForEachFn)([&](Ty2 & a_Item)
{
bool ret = false; // By default continue the enumeration
L.Call(FnRef, &a_Item, cLuaState::Return, ret);
return ret;
}
);
// Push the return value:
L.Push(res);
return 1;
}
};
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