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luaur_vm/functions/
lua_b_newbuffer.rs

1use crate::enums::lua_type::lua_Type;
2use crate::functions::lua_m_newgco::luaM_newgco_;
3use crate::functions::lua_m_toobig::lua_m_toobig;
4use crate::macros::lua_c_init::luaC_init;
5use crate::macros::max_buffer_size::MAX_BUFFER_SIZE;
6use crate::macros::sizebuffer::sizebuffer;
7use crate::type_aliases::buffer::Buffer;
8use crate::type_aliases::lua_state::lua_State;
9
10#[allow(non_snake_case)]
11pub unsafe fn lua_b_newbuffer(L: *mut lua_State, s: usize) -> *mut Buffer {
12    if s > MAX_BUFFER_SIZE as usize {
13        lua_m_toobig(L);
14    }
15
16    let b = luaM_newgco_(L, sizebuffer(s), (*L).activememcat) as *mut Buffer;
17    luaC_init!(L, b, lua_Type::LUA_TBUFFER as i32);
18    (*b).len = s as u32;
19    core::ptr::write_bytes((*b).data.as_mut_ptr(), 0, (*b).len as usize);
20    b
21}