Lua.Ersatz

Behaves like lua_gettable, but prevents unrecoverable program crashes by calling that function through Lua.lua_pcall. Takes an additional status code pointer that is set to the status returned by lua_pcall.

Behaves like lua_getglobal, but prevents unrecoverable program crashes by calling that function through Lua.lua_pcall. Takes an additional status code pointer that is set to the status returned by lua_pcall.

Behaves like lua_settable, but prevents unrecoverable program crashes by calling that function through Lua.lua_pcall. Takes an additional status code pointer that is set to the status returned by lua_pcall.

Behaves like lua_setglobal, but prevents unrecoverable program crashes by calling that function through Lua.lua_pcall. Takes an additional status code pointer that is set to the status returned by lua_pcall.

Replacement for lua_error; it uses the HsLua error signaling convention instead of raw Lua errors.

Wrapper around lua_next which catches any Lua errors.

Wrapper around lua_concat which catches any Lua errors.

Compares two Lua values. Returns 1 if the value at index index1 satisfies op when compared with the value at index index2, following the semantics of the corresponding Lua operator (that is, it may call metamethods). Otherwise returns 0. Also returns 0 if any of the indices is not valid.

The value of op must be one of the following constants:

• LUA_OPEQ: compares for equality (==)

• LUA_OPLT: compares for less than (<)

• LUA_OPLE: compares for less or equal (<=)

This function wraps lua_compare and takes an additional parameter status; if it is not NULL, then the return value is set to the status after calling lua_compare.

Creates a new Lua state and set extra registry values for error bookkeeping.

Converts object to string, respecting any metamethods; returns NULL if an error occurs.