477 lines
15 KiB
Rust
477 lines
15 KiB
Rust
//! Contains definitions from `lua.h`.
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use std::marker::{PhantomData, PhantomPinned};
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use std::os::raw::{c_char, c_double, c_int, c_uchar, c_uint, c_void};
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use std::ptr;
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// Mark for precompiled code (`<esc>Lua`)
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pub const LUA_SIGNATURE: &[u8] = b"\x1bLua";
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// Option for multiple returns in 'lua_pcall' and 'lua_call'
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pub const LUA_MULTRET: c_int = -1;
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// Size of the Lua stack
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pub const LUAI_MAXSTACK: c_int = 1000000;
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//
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// Pseudo-indices
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//
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pub const LUA_REGISTRYINDEX: c_int = -LUAI_MAXSTACK - 1000;
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pub const fn lua_upvalueindex(i: c_int) -> c_int {
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LUA_REGISTRYINDEX - i
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}
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//
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// Thread status
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//
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pub const LUA_OK: c_int = 0;
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pub const LUA_YIELD: c_int = 1;
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pub const LUA_ERRRUN: c_int = 2;
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pub const LUA_ERRSYNTAX: c_int = 3;
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pub const LUA_ERRMEM: c_int = 4;
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pub const LUA_ERRGCMM: c_int = 5;
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pub const LUA_ERRERR: c_int = 6;
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/// A raw Lua state associated with a thread.
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#[repr(C)]
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pub struct lua_State {
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_data: [u8; 0],
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_marker: PhantomData<(*mut u8, PhantomPinned)>,
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}
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//
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// Basic types
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//
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pub const LUA_TNONE: c_int = -1;
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pub const LUA_TNIL: c_int = 0;
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pub const LUA_TBOOLEAN: c_int = 1;
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pub const LUA_TLIGHTUSERDATA: c_int = 2;
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pub const LUA_TNUMBER: c_int = 3;
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pub const LUA_TSTRING: c_int = 4;
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pub const LUA_TTABLE: c_int = 5;
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pub const LUA_TFUNCTION: c_int = 6;
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pub const LUA_TUSERDATA: c_int = 7;
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pub const LUA_TTHREAD: c_int = 8;
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pub const LUA_NUMTAGS: c_int = 9;
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/// Minimum Lua stack available to a C function
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pub const LUA_MINSTACK: c_int = 20;
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// Predefined values in the registry
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pub const LUA_RIDX_MAINTHREAD: lua_Integer = 1;
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pub const LUA_RIDX_GLOBALS: lua_Integer = 2;
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pub const LUA_RIDX_LAST: lua_Integer = LUA_RIDX_GLOBALS;
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/// A Lua number, usually equivalent to `f64`
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pub type lua_Number = c_double;
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/// A Lua integer, usually equivalent to `i64`
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#[cfg(target_pointer_width = "32")]
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pub type lua_Integer = i32;
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#[cfg(target_pointer_width = "64")]
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pub type lua_Integer = i64;
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/// A Lua unsigned integer, equivalent to `u32` in Lua 5.2
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pub type lua_Unsigned = c_uint;
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/// Type for native C functions that can be passed to Lua
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pub type lua_CFunction = unsafe extern "C" fn(L: *mut lua_State) -> c_int;
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// Type for functions that read/write blocks when loading/dumping Lua chunks
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pub type lua_Reader =
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unsafe extern "C" fn(L: *mut lua_State, ud: *mut c_void, sz: *mut usize) -> *const c_char;
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pub type lua_Writer =
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unsafe extern "C" fn(L: *mut lua_State, p: *const c_void, sz: usize, ud: *mut c_void) -> c_int;
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/// Type for memory-allocation functions
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pub type lua_Alloc = unsafe extern "C" fn(
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ud: *mut c_void,
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ptr: *mut c_void,
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osize: usize,
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nsize: usize,
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) -> *mut c_void;
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extern "C" {
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//
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// State manipulation
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//
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pub fn lua_newstate(f: lua_Alloc, ud: *mut c_void) -> *mut lua_State;
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pub fn lua_close(L: *mut lua_State);
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pub fn lua_newthread(L: *mut lua_State) -> *mut lua_State;
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pub fn lua_atpanic(L: *mut lua_State, panicf: lua_CFunction) -> lua_CFunction;
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pub fn lua_version(L: *mut lua_State) -> *const lua_Number;
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//
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// Basic stack manipulation
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//
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pub fn lua_absindex(L: *mut lua_State, idx: c_int) -> c_int;
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pub fn lua_gettop(L: *mut lua_State) -> c_int;
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pub fn lua_settop(L: *mut lua_State, idx: c_int);
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pub fn lua_pushvalue(L: *mut lua_State, idx: c_int);
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pub fn lua_remove(L: *mut lua_State, idx: c_int);
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pub fn lua_insert(L: *mut lua_State, idx: c_int);
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pub fn lua_replace(L: *mut lua_State, idx: c_int);
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pub fn lua_copy(L: *mut lua_State, fromidx: c_int, toidx: c_int);
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pub fn lua_checkstack(L: *mut lua_State, sz: c_int) -> c_int;
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pub fn lua_xmove(from: *mut lua_State, to: *mut lua_State, n: c_int);
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//
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// Access functions (stack -> C)
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//
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pub fn lua_isnumber(L: *mut lua_State, idx: c_int) -> c_int;
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pub fn lua_isstring(L: *mut lua_State, idx: c_int) -> c_int;
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pub fn lua_iscfunction(L: *mut lua_State, idx: c_int) -> c_int;
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pub fn lua_isuserdata(L: *mut lua_State, idx: c_int) -> c_int;
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pub fn lua_type(L: *mut lua_State, idx: c_int) -> c_int;
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pub fn lua_typename(L: *mut lua_State, tp: c_int) -> *const c_char;
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pub fn lua_tonumberx(L: *mut lua_State, idx: c_int, isnum: *mut c_int) -> lua_Number;
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#[link_name = "lua_tointegerx"]
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pub fn lua_tointegerx_(L: *mut lua_State, idx: c_int, isnum: *mut c_int) -> lua_Integer;
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pub fn lua_tounsignedx(L: *mut lua_State, idx: c_int, isnum: *mut c_int) -> lua_Unsigned;
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pub fn lua_toboolean(L: *mut lua_State, idx: c_int) -> c_int;
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pub fn lua_tolstring(L: *mut lua_State, idx: c_int, len: *mut usize) -> *const c_char;
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pub fn lua_rawlen(L: *mut lua_State, idx: c_int) -> usize;
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pub fn lua_tocfunction(L: *mut lua_State, idx: c_int) -> Option<lua_CFunction>;
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pub fn lua_touserdata(L: *mut lua_State, idx: c_int) -> *mut c_void;
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pub fn lua_tothread(L: *mut lua_State, idx: c_int) -> *mut lua_State;
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pub fn lua_topointer(L: *mut lua_State, idx: c_int) -> *const c_void;
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}
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//
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// Comparison and arithmetic functions
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//
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pub const LUA_OPADD: c_int = 0;
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pub const LUA_OPSUB: c_int = 1;
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pub const LUA_OPMUL: c_int = 2;
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pub const LUA_OPDIV: c_int = 3;
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pub const LUA_OPMOD: c_int = 4;
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pub const LUA_OPPOW: c_int = 5;
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pub const LUA_OPUNM: c_int = 6;
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extern "C" {
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pub fn lua_arith(L: *mut lua_State, op: c_int);
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}
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pub const LUA_OPEQ: c_int = 0;
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pub const LUA_OPLT: c_int = 1;
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pub const LUA_OPLE: c_int = 2;
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extern "C" {
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pub fn lua_rawequal(L: *mut lua_State, idx1: c_int, idx2: c_int) -> c_int;
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pub fn lua_compare(L: *mut lua_State, idx1: c_int, idx2: c_int, op: c_int) -> c_int;
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}
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extern "C" {
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//
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// Push functions (C -> stack)
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//
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pub fn lua_pushnil(L: *mut lua_State);
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pub fn lua_pushnumber(L: *mut lua_State, n: lua_Number);
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pub fn lua_pushinteger(L: *mut lua_State, n: lua_Integer);
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pub fn lua_pushunsigned(L: *mut lua_State, n: lua_Unsigned);
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#[link_name = "lua_pushlstring"]
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pub fn lua_pushlstring_(L: *mut lua_State, s: *const c_char, l: usize) -> *const c_char;
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pub fn lua_pushstring(L: *mut lua_State, s: *const c_char) -> *const c_char;
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// lua_pushvfstring
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pub fn lua_pushfstring(L: *mut lua_State, fmt: *const c_char, ...) -> *const c_char;
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pub fn lua_pushcclosure(L: *mut lua_State, f: lua_CFunction, n: c_int);
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pub fn lua_pushboolean(L: *mut lua_State, b: c_int);
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pub fn lua_pushlightuserdata(L: *mut lua_State, p: *mut c_void);
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pub fn lua_pushthread(L: *mut lua_State) -> c_int;
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//
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// Get functions (Lua -> stack)
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//
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#[link_name = "lua_getglobal"]
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pub fn lua_getglobal_(L: *mut lua_State, name: *const c_char);
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#[link_name = "lua_gettable"]
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pub fn lua_gettable_(L: *mut lua_State, idx: c_int);
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#[link_name = "lua_getfield"]
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pub fn lua_getfield_(L: *mut lua_State, idx: c_int, k: *const c_char);
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#[link_name = "lua_rawget"]
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pub fn lua_rawget_(L: *mut lua_State, idx: c_int);
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#[link_name = "lua_rawgeti"]
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pub fn lua_rawgeti_(L: *mut lua_State, idx: c_int, n: c_int);
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#[link_name = "lua_rawgetp"]
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pub fn lua_rawgetp_(L: *mut lua_State, idx: c_int, p: *const c_void);
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pub fn lua_createtable(L: *mut lua_State, narr: c_int, nrec: c_int);
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pub fn lua_newuserdata(L: *mut lua_State, sz: usize) -> *mut c_void;
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pub fn lua_getmetatable(L: *mut lua_State, objindex: c_int) -> c_int;
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#[link_name = "lua_getuservalue"]
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pub fn lua_getuservalue_(L: *mut lua_State, idx: c_int);
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//
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// Set functions (stack -> Lua)
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//
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pub fn lua_setglobal(L: *mut lua_State, var: *const c_char);
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pub fn lua_settable(L: *mut lua_State, idx: c_int);
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pub fn lua_setfield(L: *mut lua_State, idx: c_int, k: *const c_char);
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pub fn lua_rawset(L: *mut lua_State, idx: c_int);
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#[link_name = "lua_rawseti"]
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pub fn lua_rawseti_(L: *mut lua_State, idx: c_int, n: c_int);
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pub fn lua_rawsetp(L: *mut lua_State, idx: c_int, p: *const c_void);
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pub fn lua_setmetatable(L: *mut lua_State, objindex: c_int) -> c_int;
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pub fn lua_setuservalue(L: *mut lua_State, idx: c_int);
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//
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// 'load' and 'call' functions (load and run Lua code)
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//
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pub fn lua_callk(
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L: *mut lua_State,
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nargs: c_int,
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nresults: c_int,
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ctx: c_int,
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k: Option<lua_CFunction>,
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);
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pub fn lua_pcallk(
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L: *mut lua_State,
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nargs: c_int,
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nresults: c_int,
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errfunc: c_int,
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ctx: c_int,
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k: Option<lua_CFunction>,
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) -> c_int;
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pub fn lua_getctx(L: *mut lua_State, ctx: *mut c_int) -> c_int;
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pub fn lua_load(
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L: *mut lua_State,
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reader: lua_Reader,
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data: *mut c_void,
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chunkname: *const c_char,
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mode: *const c_char,
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) -> c_int;
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#[link_name = "lua_dump"]
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pub fn lua_dump_(L: *mut lua_State, writer: lua_Writer, data: *mut c_void) -> c_int;
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}
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#[inline(always)]
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pub unsafe fn lua_call(L: *mut lua_State, n: c_int, r: c_int) {
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lua_callk(L, n, r, 0, None)
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}
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#[inline(always)]
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pub unsafe fn lua_pcall(L: *mut lua_State, n: c_int, r: c_int, f: c_int) -> c_int {
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lua_pcallk(L, n, r, f, 0, None)
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}
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extern "C" {
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//
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// Coroutine functions
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//
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pub fn lua_yieldk(
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L: *mut lua_State,
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nresults: c_int,
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ctx: c_int,
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k: Option<lua_CFunction>,
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) -> c_int;
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#[link_name = "lua_resume"]
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pub fn lua_resume_(L: *mut lua_State, from: *mut lua_State, narg: c_int) -> c_int;
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pub fn lua_status(L: *mut lua_State) -> c_int;
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}
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#[inline(always)]
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pub unsafe fn lua_yield(L: *mut lua_State, n: c_int) -> c_int {
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lua_yieldk(L, n, 0, None)
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}
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//
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// Garbage-collection function and options
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//
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pub const LUA_GCSTOP: c_int = 0;
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pub const LUA_GCRESTART: c_int = 1;
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pub const LUA_GCCOLLECT: c_int = 2;
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pub const LUA_GCCOUNT: c_int = 3;
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pub const LUA_GCCOUNTB: c_int = 4;
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pub const LUA_GCSTEP: c_int = 5;
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pub const LUA_GCSETPAUSE: c_int = 6;
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pub const LUA_GCSETSTEPMUL: c_int = 7;
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pub const LUA_GCSETMAJORINC: c_int = 8;
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pub const LUA_GCISRUNNING: c_int = 9;
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pub const LUA_GCGEN: c_int = 10;
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pub const LUA_GCINC: c_int = 11;
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extern "C" {
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pub fn lua_gc(L: *mut lua_State, what: c_int, data: c_int) -> c_int;
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}
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extern "C" {
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//
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// Miscellaneous functions
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//
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pub fn lua_error(L: *mut lua_State) -> !;
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pub fn lua_next(L: *mut lua_State, idx: c_int) -> c_int;
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pub fn lua_concat(L: *mut lua_State, n: c_int);
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pub fn lua_len(L: *mut lua_State, idx: c_int);
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pub fn lua_getallocf(L: *mut lua_State, ud: *mut *mut c_void) -> lua_Alloc;
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pub fn lua_setallocf(L: *mut lua_State, f: lua_Alloc, ud: *mut c_void);
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}
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//
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// Some useful macros (implemented as Rust functions)
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//
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#[inline(always)]
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pub unsafe fn lua_tonumber(L: *mut lua_State, i: c_int) -> lua_Number {
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lua_tonumberx(L, i, ptr::null_mut())
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}
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#[inline(always)]
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pub unsafe fn lua_tointeger_(L: *mut lua_State, i: c_int) -> lua_Integer {
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lua_tointegerx_(L, i, ptr::null_mut())
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}
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#[inline(always)]
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pub unsafe fn lua_tounsigned(L: *mut lua_State, i: c_int) -> lua_Unsigned {
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lua_tounsignedx(L, i, ptr::null_mut())
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}
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#[inline(always)]
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pub unsafe fn lua_pop(L: *mut lua_State, n: c_int) {
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lua_settop(L, -n - 1)
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}
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#[inline(always)]
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pub unsafe fn lua_newtable(L: *mut lua_State) {
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lua_createtable(L, 0, 0)
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}
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#[inline(always)]
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pub unsafe fn lua_register(L: *mut lua_State, n: *const c_char, f: lua_CFunction) {
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lua_pushcfunction(L, f);
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lua_setglobal(L, n)
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}
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#[inline(always)]
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pub unsafe fn lua_pushcfunction(L: *mut lua_State, f: lua_CFunction) {
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lua_pushcclosure(L, f, 0)
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}
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#[inline(always)]
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pub unsafe fn lua_isfunction(L: *mut lua_State, n: c_int) -> c_int {
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(lua_type(L, n) == LUA_TFUNCTION) as c_int
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}
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#[inline(always)]
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pub unsafe fn lua_istable(L: *mut lua_State, n: c_int) -> c_int {
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(lua_type(L, n) == LUA_TTABLE) as c_int
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}
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#[inline(always)]
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pub unsafe fn lua_islightuserdata(L: *mut lua_State, n: c_int) -> c_int {
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(lua_type(L, n) == LUA_TLIGHTUSERDATA) as c_int
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}
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#[inline(always)]
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pub unsafe fn lua_isnil(L: *mut lua_State, n: c_int) -> c_int {
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(lua_type(L, n) == LUA_TNIL) as c_int
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}
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#[inline(always)]
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pub unsafe fn lua_isboolean(L: *mut lua_State, n: c_int) -> c_int {
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(lua_type(L, n) == LUA_TBOOLEAN) as c_int
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}
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#[inline(always)]
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pub unsafe fn lua_isthread(L: *mut lua_State, n: c_int) -> c_int {
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(lua_type(L, n) == LUA_TTHREAD) as c_int
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}
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#[inline(always)]
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pub unsafe fn lua_isnone(L: *mut lua_State, n: c_int) -> c_int {
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(lua_type(L, n) == LUA_TNONE) as c_int
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}
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#[inline(always)]
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pub unsafe fn lua_isnoneornil(L: *mut lua_State, n: c_int) -> c_int {
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(lua_type(L, n) <= 0) as c_int
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}
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#[inline(always)]
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pub unsafe fn lua_pushliteral(L: *mut lua_State, s: &'static str) -> *const c_char {
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use std::ffi::CString;
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let c_str = CString::new(s).unwrap();
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lua_pushlstring_(L, c_str.as_ptr(), c_str.as_bytes().len())
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}
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#[inline(always)]
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pub unsafe fn lua_pushglobaltable(L: *mut lua_State) {
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lua_rawgeti_(L, LUA_REGISTRYINDEX, LUA_RIDX_GLOBALS as _)
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}
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#[inline(always)]
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pub unsafe fn lua_tostring(L: *mut lua_State, i: c_int) -> *const c_char {
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lua_tolstring(L, i, ptr::null_mut())
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}
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#[inline(always)]
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pub unsafe fn lua_xpush(from: *mut lua_State, to: *mut lua_State, idx: c_int) {
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lua_pushvalue(from, idx);
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lua_xmove(from, to, 1);
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}
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//
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// Debug API
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//
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// Maximum size for the description of the source of a function in debug information.
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const LUA_IDSIZE: usize = 60;
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// Event codes
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pub const LUA_HOOKCALL: c_int = 0;
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pub const LUA_HOOKRET: c_int = 1;
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pub const LUA_HOOKLINE: c_int = 2;
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pub const LUA_HOOKCOUNT: c_int = 3;
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pub const LUA_HOOKTAILCALL: c_int = 4;
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// Event masks
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pub const LUA_MASKCALL: c_int = 1 << (LUA_HOOKCALL as usize);
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pub const LUA_MASKRET: c_int = 1 << (LUA_HOOKRET as usize);
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pub const LUA_MASKLINE: c_int = 1 << (LUA_HOOKLINE as usize);
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pub const LUA_MASKCOUNT: c_int = 1 << (LUA_HOOKCOUNT as usize);
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/// Type for functions to be called on debug events.
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pub type lua_Hook = unsafe extern "C" fn(L: *mut lua_State, ar: *mut lua_Debug);
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extern "C" {
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pub fn lua_getstack(L: *mut lua_State, level: c_int, ar: *mut lua_Debug) -> c_int;
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pub fn lua_getinfo(L: *mut lua_State, what: *const c_char, ar: *mut lua_Debug) -> c_int;
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pub fn lua_getlocal(L: *mut lua_State, ar: *const lua_Debug, n: c_int) -> *const c_char;
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pub fn lua_setlocal(L: *mut lua_State, ar: *const lua_Debug, n: c_int) -> *const c_char;
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pub fn lua_getupvalue(L: *mut lua_State, funcindex: c_int, n: c_int) -> *const c_char;
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pub fn lua_setupvalue(L: *mut lua_State, funcindex: c_int, n: c_int) -> *const c_char;
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pub fn lua_upvalueid(L: *mut lua_State, fidx: c_int, n: c_int) -> *mut c_void;
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pub fn lua_upvaluejoin(L: *mut lua_State, fidx1: c_int, n1: c_int, fidx2: c_int, n2: c_int);
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pub fn lua_sethook(L: *mut lua_State, func: Option<lua_Hook>, mask: c_int, count: c_int);
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pub fn lua_gethook(L: *mut lua_State) -> Option<lua_Hook>;
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pub fn lua_gethookmask(L: *mut lua_State) -> c_int;
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pub fn lua_gethookcount(L: *mut lua_State) -> c_int;
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}
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#[repr(C)]
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pub struct lua_Debug {
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pub event: c_int,
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pub name: *const c_char,
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pub namewhat: *const c_char,
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pub what: *const c_char,
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pub source: *const c_char,
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pub currentline: c_int,
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pub linedefined: c_int,
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pub lastlinedefined: c_int,
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pub nups: c_uchar,
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pub nparams: c_uchar,
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pub isvararg: c_char,
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pub istailcall: c_char,
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pub short_src: [c_char; LUA_IDSIZE],
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// lua.h mentions this is for private use
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i_ci: *mut c_void,
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}
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