/// <summary>[-0, +0, -] Returns whether the currently executing code was called by Lua.</summary>
public static bool infunction(lua.State L)
{
// this function should resolve to the same thing as "L->ci != L->base_ci" in internal lua code
var ar = new lua.Debug();
return(lua.getstack(L, 0, ref ar)); // returns unsuccessful if there is no stack
}
/// <summary>[-0, +0, m] luaL.where clone that returns a string rather than pushing to the stack.</summary>
public static string where (lua.State L, int level)
{
var ar = new lua.Debug();
if (lua.getstack(L, level, ref ar)) // check function at level
{
lua.getinfo(L, "Sl", ref ar); // get info about it
if (ar.currentline > 0) // is there info?
{
return(string.Format("{0}:{1}: ", ar.short_src, ar.currentline.ToString())); // tostring here avoids boxing
}
}
return(""); // else, no information available...
}
/// <summary>[-0, +0, -] luaL.where clone that returns a string rather than pushing to the stack.</summary>
public static string where (lua.State L, int level)
{
/*
* I checked lua_getinfo implementation and couldn't find any memory allocation for the 'S' or 'l' flags.
* My guess is that the luaL_where documentation marked it as m because it uses lua_pushfstring.
* - DBN
*/
var ar = new lua.Debug();
if (lua.getstack(L, level, ref ar)) // check function at level
{
lua.getinfo(L, "Sl", ref ar); // get info about it
if (ar.currentline > 0) // is there info?
{
return(string.Format("{0}:{1}: ", ar.short_src, ar.currentline.ToString())); // tostring here avoids boxing
}
}
return(""); // else, no information available...
}
