Don't trigger longjmp in rust.
Motivation behind this change is upcoming breaking change in Rust compiler v1.52.0 to prevent unwinding across FFI boundaries. https://github.com/rust-lang/rust/pull/76570 The new functionality requires nightly compiler to declare FFI functions as "C-unwind". The fundamental solution is to use C shim to wrap "e" and "m" Lua functions in pcall. Additionally define Rust calling convention to trigger lua_error on Rust behalf.
This commit is contained in:
Alex Orlenko
parent
c95ac32741
commit
ced808d5ab
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@ -239,5 +239,14 @@ fn main() {
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println!("cargo:rerun-if-changed=src/ffi/glue/glue.c");
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}
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let mut shim_cc = cc::Build::new();
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shim_cc
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.include(include_dir)
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.define("COMPAT53_INCLUDE_SOURCE", None);
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#[cfg(feature = "luajit")]
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shim_cc.define("COMPAT53_LUAJIT", None);
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shim_cc.file("src/ffi/shim/shim.c").compile("shim");
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println!("cargo:rerun-if-changed=src/ffi/shim");
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println!("cargo:rerun-if-changed=build");
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}
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@ -288,3 +288,5 @@ mod lauxlib;
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mod lua;
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mod luaconf;
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mod lualib;
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pub mod safe;
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@ -0,0 +1,265 @@
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use std::ffi::CString;
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use std::os::raw::{c_char, c_int, c_void};
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use crate::error::Result;
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use crate::util::protect_lua;
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use super::lua::{lua_CFunction, lua_Debug, lua_Integer, lua_State};
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extern "C" {
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#[link_name = "MLUA_WRAPPED_ERROR_SIZE"]
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pub static mut WRAPPED_ERROR_SIZE: usize;
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#[link_name = "MLUA_WRAPPED_PANIC_SIZE"]
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pub static mut WRAPPED_PANIC_SIZE: usize;
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#[link_name = "MLUA_WRAPPED_ERROR_KEY"]
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pub static mut WRAPPED_ERROR_KEY: *const c_void;
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#[link_name = "MLUA_WRAPPED_PANIC_KEY"]
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pub static mut WRAPPED_PANIC_KEY: *const c_void;
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pub fn lua_call_mlua_hook_proc(L: *mut lua_State, ar: *mut lua_Debug);
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pub fn meta_index_impl(state: *mut lua_State) -> c_int;
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pub fn meta_newindex_impl(state: *mut lua_State) -> c_int;
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pub fn bind_call_impl(state: *mut lua_State) -> c_int;
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pub fn error_traceback(state: *mut lua_State) -> c_int;
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fn lua_gc_s(L: *mut lua_State) -> c_int;
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fn luaL_ref_s(L: *mut lua_State) -> c_int;
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fn lua_pushlstring_s(L: *mut lua_State) -> c_int;
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fn lua_tolstring_s(L: *mut lua_State) -> c_int;
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fn lua_newthread_s(L: *mut lua_State) -> c_int;
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fn lua_newuserdata_s(L: *mut lua_State) -> c_int;
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fn lua_pushcclosure_s(L: *mut lua_State) -> c_int;
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fn lua_pushrclosure_s(L: *mut lua_State) -> c_int;
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fn luaL_requiref_s(L: *mut lua_State) -> c_int;
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fn error_traceback_s(L: *mut lua_State) -> c_int;
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fn lua_createtable_s(L: *mut lua_State) -> c_int;
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fn lua_gettable_s(L: *mut lua_State) -> c_int;
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fn lua_settable_s(L: *mut lua_State) -> c_int;
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fn lua_geti_s(L: *mut lua_State) -> c_int;
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fn lua_rawset_s(L: *mut lua_State) -> c_int;
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fn lua_rawseti_s(L: *mut lua_State) -> c_int;
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fn lua_rawsetp_s(L: *mut lua_State) -> c_int;
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fn lua_rawsetfield_s(L: *mut lua_State) -> c_int;
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fn lua_rawinsert_s(L: *mut lua_State) -> c_int;
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fn lua_rawremove_s(L: *mut lua_State) -> c_int;
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fn luaL_len_s(L: *mut lua_State) -> c_int;
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fn lua_next_s(L: *mut lua_State) -> c_int;
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}
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#[repr(C)]
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struct StringArg {
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data: *const c_char,
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len: usize,
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}
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//
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// Common functions
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//
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// Uses 4 stack spaces
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pub unsafe fn lua_gc(state: *mut lua_State, what: c_int, data: c_int) -> Result<c_int> {
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super::lua_pushinteger(state, what as lua_Integer);
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super::lua_pushinteger(state, data as lua_Integer);
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protect_lua(state, 2, lua_gc_s)?;
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let ret = super::lua_tointeger(state, -1) as c_int;
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super::lua_pop(state, 1);
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Ok(ret)
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}
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// Uses 3 stack spaces
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pub unsafe fn luaL_ref(state: *mut lua_State, table: c_int) -> Result<c_int> {
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super::lua_pushvalue(state, table);
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super::lua_rotate(state, -2, 1);
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protect_lua(state, 2, luaL_ref_s)?;
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let ret = super::lua_tointeger(state, -1) as c_int;
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super::lua_pop(state, 1);
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Ok(ret)
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}
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// Uses 3 stack spaces
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pub unsafe fn lua_pushstring<S: AsRef<[u8]> + ?Sized>(state: *mut lua_State, s: &S) -> Result<()> {
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let s = s.as_ref();
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let s = StringArg {
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data: s.as_ptr() as *const c_char,
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len: s.len(),
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};
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super::lua_pushlightuserdata(state, &s as *const StringArg as *mut c_void);
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protect_lua(state, 1, lua_pushlstring_s)
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}
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// Uses 4 stack spaces
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pub unsafe fn lua_tolstring(
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state: *mut lua_State,
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index: c_int,
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len: *mut usize,
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) -> Result<*const c_char> {
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let index = super::lua_absindex(state, index);
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super::lua_pushvalue(state, index);
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super::lua_pushlightuserdata(state, len as *mut c_void);
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protect_lua(state, 2, lua_tolstring_s)?;
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let s = super::lua_touserdata(state, -1);
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super::lua_pop(state, 1);
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super::lua_replace(state, index);
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Ok(s as *const c_char)
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}
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// Uses 2 stack spaces
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pub unsafe fn lua_newthread(state: *mut lua_State) -> Result<*mut lua_State> {
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protect_lua(state, 0, lua_newthread_s)?;
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Ok(super::lua_tothread(state, -1))
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}
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// Uses 3 stack spaces
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pub unsafe fn lua_newuserdata(state: *mut lua_State, size: usize) -> Result<*mut c_void> {
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super::lua_pushinteger(state, size as lua_Integer);
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protect_lua(state, 1, lua_newuserdata_s)?;
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Ok(super::lua_touserdata(state, -1))
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}
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// Uses 4 stack spaces
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pub unsafe fn lua_pushcclosure(state: *mut lua_State, f: lua_CFunction, n: c_int) -> Result<()> {
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super::lua_pushlightuserdata(state, f as *mut c_void);
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super::lua_pushinteger(state, n as lua_Integer);
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protect_lua(state, n + 2, lua_pushcclosure_s)
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}
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// Uses 4 stack spaces
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pub unsafe fn lua_pushrclosure(state: *mut lua_State, f: lua_CFunction, n: c_int) -> Result<()> {
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super::lua_pushlightuserdata(state, f as *mut c_void);
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if n > 0 {
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super::lua_rotate(state, -n - 1, 1);
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}
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super::lua_pushinteger(state, n as lua_Integer + 1);
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protect_lua(state, n + 2, lua_pushrclosure_s)
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}
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// Uses 5 stack spaces
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pub unsafe fn luaL_requiref<S: AsRef<[u8]> + ?Sized>(
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state: *mut lua_State,
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modname: &S,
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openf: lua_CFunction,
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glb: c_int,
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) -> Result<()> {
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let modname = mlua_expect!(CString::new(modname.as_ref()), "modname contains nil bytes");
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super::lua_pushlightuserdata(state, modname.as_ptr() as *mut c_void);
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super::lua_pushlightuserdata(state, openf as *mut c_void);
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super::lua_pushinteger(state, glb as lua_Integer);
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protect_lua(state, 3, luaL_requiref_s)
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}
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// Uses 3 stack spaces
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pub unsafe fn error_traceback2(state: *mut lua_State, state2: *mut lua_State) -> Result<()> {
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mlua_assert!(
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state != state2,
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"error_traceback2 must be used with two different states"
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);
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super::lua_pushlightuserdata(state, state2);
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protect_lua(state, 1, error_traceback_s)
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}
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//
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// Table functions
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//
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// Uses 4 stack spaces
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pub unsafe fn lua_createtable(state: *mut lua_State, narr: c_int, nrec: c_int) -> Result<()> {
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super::lua_pushinteger(state, narr as lua_Integer);
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super::lua_pushinteger(state, nrec as lua_Integer);
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protect_lua(state, 2, lua_createtable_s)
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}
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// Uses 3 stack spaces
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pub unsafe fn lua_gettable(state: *mut lua_State, table: c_int) -> Result<()> {
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super::lua_pushvalue(state, table);
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super::lua_rotate(state, -2, 1);
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protect_lua(state, 2, lua_gettable_s)
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}
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// Uses 3 stack spaces
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pub unsafe fn lua_settable(state: *mut lua_State, table: c_int) -> Result<()> {
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super::lua_pushvalue(state, table);
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super::lua_rotate(state, -3, 1);
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protect_lua(state, 3, lua_settable_s)
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}
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// Uses 4 stack spaces
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pub unsafe fn lua_geti(state: *mut lua_State, table: c_int, i: lua_Integer) -> Result<c_int> {
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super::lua_pushvalue(state, table);
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super::lua_pushinteger(state, i);
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protect_lua(state, 2, lua_geti_s).map(|_| super::lua_type(state, -1))
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}
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// Uses 3 stack spaces
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pub unsafe fn lua_rawset(state: *mut lua_State, table: c_int) -> Result<()> {
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super::lua_pushvalue(state, table);
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super::lua_rotate(state, -3, 1);
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protect_lua(state, 3, lua_rawset_s)
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}
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// Uses 4 stack spaces
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pub unsafe fn lua_rawseti(state: *mut lua_State, table: c_int, i: lua_Integer) -> Result<()> {
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super::lua_pushvalue(state, table);
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super::lua_rotate(state, -2, 1);
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super::lua_pushinteger(state, i);
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protect_lua(state, 3, lua_rawseti_s)
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}
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// Uses 4 stack spaces
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pub unsafe fn lua_rawsetp(state: *mut lua_State, table: c_int, ptr: *const c_void) -> Result<()> {
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super::lua_pushvalue(state, table);
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super::lua_rotate(state, -2, 1);
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super::lua_pushlightuserdata(state, ptr as *mut c_void);
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protect_lua(state, 3, lua_rawsetp_s)
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}
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// Uses 4 stack spaces
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pub unsafe fn lua_rawsetfield<S>(state: *mut lua_State, table: c_int, field: &S) -> Result<()>
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where
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S: AsRef<[u8]> + ?Sized,
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{
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let field = field.as_ref();
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let s = StringArg {
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data: field.as_ptr() as *const c_char,
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len: field.len(),
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};
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super::lua_pushvalue(state, table);
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super::lua_pushlightuserdata(state, &s as *const StringArg as *mut c_void);
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super::lua_rotate(state, -3, 2);
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protect_lua(state, 3, lua_rawsetfield_s)
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}
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// Uses 4 stack spaces
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pub unsafe fn lua_rawinsert(state: *mut lua_State, table: c_int, i: lua_Integer) -> Result<()> {
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super::lua_pushvalue(state, table);
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super::lua_rotate(state, -2, 1);
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super::lua_pushinteger(state, i);
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protect_lua(state, 3, lua_rawinsert_s)
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}
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// Uses 4 stack spaces
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pub unsafe fn lua_rawremove(state: *mut lua_State, table: c_int, i: lua_Integer) -> Result<()> {
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super::lua_pushvalue(state, table);
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super::lua_pushinteger(state, i);
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protect_lua(state, 2, lua_rawremove_s)
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}
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// Uses 3 stack spaces
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pub unsafe fn luaL_len(state: *mut lua_State, table: c_int) -> Result<lua_Integer> {
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super::lua_pushvalue(state, table);
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protect_lua(state, 1, luaL_len_s)?;
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let ret = super::lua_tointeger(state, -1);
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super::lua_pop(state, 1);
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Ok(ret)
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}
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// Uses 3 stack spaces
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pub unsafe fn lua_next(state: *mut lua_State, table: c_int) -> Result<lua_Integer> {
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super::lua_pushvalue(state, table);
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super::lua_rotate(state, -2, 1);
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protect_lua(state, 2, lua_next_s)?;
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let ret = super::lua_tointeger(state, -1);
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super::lua_pop(state, 1);
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Ok(ret)
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}
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@ -0,0 +1,953 @@
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#include <stddef.h>
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#include <stdlib.h>
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#include <string.h>
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#include <ctype.h>
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#include <errno.h>
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#include <stdio.h>
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#include "compat-5.3.h"
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/* don't compile it again if it already is included via compat53.h */
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#ifndef COMPAT53_C_
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#define COMPAT53_C_
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/* definitions for Lua 5.1 only */
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#if defined(LUA_VERSION_NUM) && LUA_VERSION_NUM == 501
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#ifndef COMPAT53_FOPEN_NO_LOCK
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# if defined(_MSC_VER)
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# define COMPAT53_FOPEN_NO_LOCK 1
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# else /* otherwise */
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# define COMPAT53_FOPEN_NO_LOCK 0
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# endif /* VC++ only so far */
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#endif /* No-lock fopen_s usage if possible */
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#if defined(_MSC_VER) && COMPAT53_FOPEN_NO_LOCK
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# include <share.h>
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#endif /* VC++ _fsopen for share-allowed file read */
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#ifndef COMPAT53_HAVE_STRERROR_R
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# if (defined(_POSIX_C_SOURCE) && _POSIX_C_SOURCE >= 200112L) || \
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(defined(_XOPEN_SOURCE) && _XOPEN_SOURCE >= 600) || \
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defined(__APPLE__)
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# define COMPAT53_HAVE_STRERROR_R 1
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# else /* none of the defines matched: define to 0 */
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# define COMPAT53_HAVE_STRERROR_R 0
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# endif /* have strerror_r of some form */
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#endif /* strerror_r */
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#ifndef COMPAT53_HAVE_STRERROR_S
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# if defined(_MSC_VER) || (defined(__STDC_VERSION__) && __STDC_VERSION__ >= 201112L && \
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defined(__STDC_LIB_EXT1__) && __STDC_LIB_EXT1__)
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# define COMPAT53_HAVE_STRERROR_S 1
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# else /* not VC++ or C11 */
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# define COMPAT53_HAVE_STRERROR_S 0
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# endif /* strerror_s from VC++ or C11 */
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#endif /* strerror_s */
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#ifndef COMPAT53_LUA_FILE_BUFFER_SIZE
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# define COMPAT53_LUA_FILE_BUFFER_SIZE 4096
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#endif /* Lua File Buffer Size */
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static char* compat53_strerror (int en, char* buff, size_t sz) {
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#if COMPAT53_HAVE_STRERROR_R
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/* use strerror_r here, because it's available on these specific platforms */
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if (sz > 0) {
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buff[0] = '\0';
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/* we don't care whether the GNU version or the XSI version is used: */
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if (strerror_r(en, buff, sz)) {
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/* Yes, we really DO want to ignore the return value!
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* GCC makes that extra hard, not even a (void) cast will do. */
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}
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if (buff[0] == '\0') {
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/* Buffer is unchanged, so we probably have called GNU strerror_r which
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* returned a static constant string. Chances are that strerror will
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* return the same static constant string and therefore be thread-safe. */
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return strerror(en);
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}
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}
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return buff; /* sz is 0 *or* strerror_r wrote into the buffer */
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#elif COMPAT53_HAVE_STRERROR_S
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/* for MSVC and other C11 implementations, use strerror_s since it's
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* provided by default by the libraries */
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strerror_s(buff, sz, en);
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return buff;
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#else
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/* fallback, but strerror is not guaranteed to be threadsafe due to modifying
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* errno itself and some impls not locking a static buffer for it ... but most
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* known systems have threadsafe errno: this might only change if the locale
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* is changed out from under someone while this function is being called */
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(void)buff;
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(void)sz;
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return strerror(en);
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#endif
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}
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COMPAT53_API int lua_absindex (lua_State *L, int i) {
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if (i < 0 && i > LUA_REGISTRYINDEX)
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i += lua_gettop(L) + 1;
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return i;
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}
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static void compat53_call_lua (lua_State *L, char const code[], size_t len,
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int nargs, int nret) {
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lua_rawgetp(L, LUA_REGISTRYINDEX, (void*)code);
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if (lua_type(L, -1) != LUA_TFUNCTION) {
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lua_pop(L, 1);
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if (luaL_loadbuffer(L, code, len, "=none"))
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lua_error(L);
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lua_pushvalue(L, -1);
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lua_rawsetp(L, LUA_REGISTRYINDEX, (void*)code);
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}
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lua_insert(L, -nargs-1);
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lua_call(L, nargs, nret);
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}
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static const char compat53_arith_code[] =
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"local op,a,b=...\n"
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"if op==0 then return a+b\n"
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"elseif op==1 then return a-b\n"
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"elseif op==2 then return a*b\n"
|
||||
"elseif op==3 then return a/b\n"
|
||||
"elseif op==4 then return a%b\n"
|
||||
"elseif op==5 then return a^b\n"
|
||||
"elseif op==6 then return -a\n"
|
||||
"end\n";
|
||||
|
||||
COMPAT53_API void lua_arith (lua_State *L, int op) {
|
||||
if (op < LUA_OPADD || op > LUA_OPUNM)
|
||||
luaL_error(L, "invalid 'op' argument for lua_arith");
|
||||
luaL_checkstack(L, 5, "not enough stack slots");
|
||||
if (op == LUA_OPUNM)
|
||||
lua_pushvalue(L, -1);
|
||||
lua_pushnumber(L, op);
|
||||
lua_insert(L, -3);
|
||||
compat53_call_lua(L, compat53_arith_code,
|
||||
sizeof(compat53_arith_code)-1, 3, 1);
|
||||
}
|
||||
|
||||
|
||||
static const char compat53_compare_code[] =
|
||||
"local a,b=...\n"
|
||||
"return a<=b\n";
|
||||
|
||||
COMPAT53_API int lua_compare (lua_State *L, int idx1, int idx2, int op) {
|
||||
int result = 0;
|
||||
switch (op) {
|
||||
case LUA_OPEQ:
|
||||
return lua_equal(L, idx1, idx2);
|
||||
case LUA_OPLT:
|
||||
return lua_lessthan(L, idx1, idx2);
|
||||
case LUA_OPLE:
|
||||
luaL_checkstack(L, 5, "not enough stack slots");
|
||||
idx1 = lua_absindex(L, idx1);
|
||||
idx2 = lua_absindex(L, idx2);
|
||||
lua_pushvalue(L, idx1);
|
||||
lua_pushvalue(L, idx2);
|
||||
compat53_call_lua(L, compat53_compare_code,
|
||||
sizeof(compat53_compare_code)-1, 2, 1);
|
||||
result = lua_toboolean(L, -1);
|
||||
lua_pop(L, 1);
|
||||
return result;
|
||||
default:
|
||||
luaL_error(L, "invalid 'op' argument for lua_compare");
|
||||
}
|
||||
return 0;
|
||||
}
|
||||
|
||||
|
||||
COMPAT53_API void lua_copy (lua_State *L, int from, int to) {
|
||||
int abs_to = lua_absindex(L, to);
|
||||
luaL_checkstack(L, 1, "not enough stack slots");
|
||||
lua_pushvalue(L, from);
|
||||
lua_replace(L, abs_to);
|
||||
}
|
||||
|
||||
|
||||
COMPAT53_API void lua_len (lua_State *L, int i) {
|
||||
switch (lua_type(L, i)) {
|
||||
case LUA_TSTRING:
|
||||
lua_pushnumber(L, (lua_Number)lua_objlen(L, i));
|
||||
break;
|
||||
case LUA_TTABLE:
|
||||
if (!luaL_callmeta(L, i, "__len"))
|
||||
lua_pushnumber(L, (lua_Number)lua_objlen(L, i));
|
||||
break;
|
||||
case LUA_TUSERDATA:
|
||||
if (luaL_callmeta(L, i, "__len"))
|
||||
break;
|
||||
/* FALLTHROUGH */
|
||||
default:
|
||||
luaL_error(L, "attempt to get length of a %s value",
|
||||
lua_typename(L, lua_type(L, i)));
|
||||
}
|
||||
}
|
||||
|
||||
|
||||
COMPAT53_API int lua_rawgetp (lua_State *L, int i, const void *p) {
|
||||
int abs_i = lua_absindex(L, i);
|
||||
lua_pushlightuserdata(L, (void*)p);
|
||||
lua_rawget(L, abs_i);
|
||||
return lua_type(L, -1);
|
||||
}
|
||||
|
||||
COMPAT53_API void lua_rawsetp (lua_State *L, int i, const void *p) {
|
||||
int abs_i = lua_absindex(L, i);
|
||||
luaL_checkstack(L, 1, "not enough stack slots");
|
||||
lua_pushlightuserdata(L, (void*)p);
|
||||
lua_insert(L, -2);
|
||||
lua_rawset(L, abs_i);
|
||||
}
|
||||
|
||||
|
||||
COMPAT53_API lua_Number lua_tonumberx (lua_State *L, int i, int *isnum) {
|
||||
lua_Number n = lua_tonumber(L, i);
|
||||
if (isnum != NULL) {
|
||||
*isnum = (n != 0 || lua_isnumber(L, i));
|
||||
}
|
||||
return n;
|
||||
}
|
||||
|
||||
|
||||
COMPAT53_API void luaL_checkversion (lua_State *L) {
|
||||
(void)L;
|
||||
}
|
||||
|
||||
|
||||
COMPAT53_API void luaL_checkstack (lua_State *L, int sp, const char *msg) {
|
||||
if (!lua_checkstack(L, sp+LUA_MINSTACK)) {
|
||||
if (msg != NULL)
|
||||
luaL_error(L, "stack overflow (%s)", msg);
|
||||
else {
|
||||
lua_pushliteral(L, "stack overflow");
|
||||
lua_error(L);
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
|
||||
COMPAT53_API int luaL_getsubtable (lua_State *L, int i, const char *name) {
|
||||
int abs_i = lua_absindex(L, i);
|
||||
luaL_checkstack(L, 3, "not enough stack slots");
|
||||
lua_pushstring(L, name);
|
||||
lua_gettable(L, abs_i);
|
||||
if (lua_istable(L, -1))
|
||||
return 1;
|
||||
lua_pop(L, 1);
|
||||
lua_newtable(L);
|
||||
lua_pushstring(L, name);
|
||||
lua_pushvalue(L, -2);
|
||||
lua_settable(L, abs_i);
|
||||
return 0;
|
||||
}
|
||||
|
||||
|
||||
COMPAT53_API lua_Integer luaL_len (lua_State *L, int i) {
|
||||
lua_Integer res = 0;
|
||||
int isnum = 0;
|
||||
luaL_checkstack(L, 1, "not enough stack slots");
|
||||
lua_len(L, i);
|
||||
res = lua_tointegerx(L, -1, &isnum);
|
||||
lua_pop(L, 1);
|
||||
if (!isnum)
|
||||
luaL_error(L, "object length is not an integer");
|
||||
return res;
|
||||
}
|
||||
|
||||
|
||||
COMPAT53_API void luaL_setfuncs (lua_State *L, const luaL_Reg *l, int nup) {
|
||||
luaL_checkstack(L, nup+1, "too many upvalues");
|
||||
for (; l->name != NULL; l++) { /* fill the table with given functions */
|
||||
int i;
|
||||
lua_pushstring(L, l->name);
|
||||
for (i = 0; i < nup; i++) /* copy upvalues to the top */
|
||||
lua_pushvalue(L, -(nup + 1));
|
||||
lua_pushcclosure(L, l->func, nup); /* closure with those upvalues */
|
||||
lua_settable(L, -(nup + 3)); /* table must be below the upvalues, the name and the closure */
|
||||
}
|
||||
lua_pop(L, nup); /* remove upvalues */
|
||||
}
|
||||
|
||||
|
||||
COMPAT53_API void luaL_setmetatable (lua_State *L, const char *tname) {
|
||||
luaL_checkstack(L, 1, "not enough stack slots");
|
||||
luaL_getmetatable(L, tname);
|
||||
lua_setmetatable(L, -2);
|
||||
}
|
||||
|
||||
|
||||
COMPAT53_API void *luaL_testudata (lua_State *L, int i, const char *tname) {
|
||||
void *p = lua_touserdata(L, i);
|
||||
luaL_checkstack(L, 2, "not enough stack slots");
|
||||
if (p == NULL || !lua_getmetatable(L, i))
|
||||
return NULL;
|
||||
else {
|
||||
int res = 0;
|
||||
luaL_getmetatable(L, tname);
|
||||
res = lua_rawequal(L, -1, -2);
|
||||
lua_pop(L, 2);
|
||||
if (!res)
|
||||
p = NULL;
|
||||
}
|
||||
return p;
|
||||
}
|
||||
|
||||
|
||||
static int compat53_countlevels (lua_State *L) {
|
||||
lua_Debug ar;
|
||||
int li = 1, le = 1;
|
||||
/* find an upper bound */
|
||||
while (lua_getstack(L, le, &ar)) { li = le; le *= 2; }
|
||||
/* do a binary search */
|
||||
while (li < le) {
|
||||
int m = (li + le)/2;
|
||||
if (lua_getstack(L, m, &ar)) li = m + 1;
|
||||
else le = m;
|
||||
}
|
||||
return le - 1;
|
||||
}
|
||||
|
||||
static int compat53_findfield (lua_State *L, int objidx, int level) {
|
||||
if (level == 0 || !lua_istable(L, -1))
|
||||
return 0; /* not found */
|
||||
lua_pushnil(L); /* start 'next' loop */
|
||||
while (lua_next(L, -2)) { /* for each pair in table */
|
||||
if (lua_type(L, -2) == LUA_TSTRING) { /* ignore non-string keys */
|
||||
if (lua_rawequal(L, objidx, -1)) { /* found object? */
|
||||
lua_pop(L, 1); /* remove value (but keep name) */
|
||||
return 1;
|
||||
}
|
||||
else if (compat53_findfield(L, objidx, level - 1)) { /* try recursively */
|
||||
lua_remove(L, -2); /* remove table (but keep name) */
|
||||
lua_pushliteral(L, ".");
|
||||
lua_insert(L, -2); /* place '.' between the two names */
|
||||
lua_concat(L, 3);
|
||||
return 1;
|
||||
}
|
||||
}
|
||||
lua_pop(L, 1); /* remove value */
|
||||
}
|
||||
return 0; /* not found */
|
||||
}
|
||||
|
||||
static int compat53_pushglobalfuncname (lua_State *L, lua_Debug *ar) {
|
||||
int top = lua_gettop(L);
|
||||
lua_getinfo(L, "f", ar); /* push function */
|
||||
lua_pushvalue(L, LUA_GLOBALSINDEX);
|
||||
if (compat53_findfield(L, top + 1, 2)) {
|
||||
lua_copy(L, -1, top + 1); /* move name to proper place */
|
||||
lua_pop(L, 2); /* remove pushed values */
|
||||
return 1;
|
||||
}
|
||||
else {
|
||||
lua_settop(L, top); /* remove function and global table */
|
||||
return 0;
|
||||
}
|
||||
}
|
||||
|
||||
static void compat53_pushfuncname (lua_State *L, lua_Debug *ar) {
|
||||
if (*ar->namewhat != '\0') /* is there a name? */
|
||||
lua_pushfstring(L, "function " LUA_QS, ar->name);
|
||||
else if (*ar->what == 'm') /* main? */
|
||||
lua_pushliteral(L, "main chunk");
|
||||
else if (*ar->what == 'C') {
|
||||
if (compat53_pushglobalfuncname(L, ar)) {
|
||||
lua_pushfstring(L, "function " LUA_QS, lua_tostring(L, -1));
|
||||
lua_remove(L, -2); /* remove name */
|
||||
}
|
||||
else
|
||||
lua_pushliteral(L, "?");
|
||||
}
|
||||
else
|
||||
lua_pushfstring(L, "function <%s:%d>", ar->short_src, ar->linedefined);
|
||||
}
|
||||
|
||||
#define COMPAT53_LEVELS1 12 /* size of the first part of the stack */
|
||||
#define COMPAT53_LEVELS2 10 /* size of the second part of the stack */
|
||||
|
||||
COMPAT53_API void luaL_traceback (lua_State *L, lua_State *L1,
|
||||
const char *msg, int level) {
|
||||
lua_Debug ar;
|
||||
int top = lua_gettop(L);
|
||||
int numlevels = compat53_countlevels(L1);
|
||||
int mark = (numlevels > COMPAT53_LEVELS1 + COMPAT53_LEVELS2) ? COMPAT53_LEVELS1 : 0;
|
||||
if (msg) lua_pushfstring(L, "%s\n", msg);
|
||||
lua_pushliteral(L, "stack traceback:");
|
||||
while (lua_getstack(L1, level++, &ar)) {
|
||||
if (level == mark) { /* too many levels? */
|
||||
lua_pushliteral(L, "\n\t..."); /* add a '...' */
|
||||
level = numlevels - COMPAT53_LEVELS2; /* and skip to last ones */
|
||||
}
|
||||
else {
|
||||
lua_getinfo(L1, "Slnt", &ar);
|
||||
lua_pushfstring(L, "\n\t%s:", ar.short_src);
|
||||
if (ar.currentline > 0)
|
||||
lua_pushfstring(L, "%d:", ar.currentline);
|
||||
lua_pushliteral(L, " in ");
|
||||
compat53_pushfuncname(L, &ar);
|
||||
lua_concat(L, lua_gettop(L) - top);
|
||||
}
|
||||
}
|
||||
lua_concat(L, lua_gettop(L) - top);
|
||||
}
|
||||
|
||||
|
||||
COMPAT53_API int luaL_fileresult (lua_State *L, int stat, const char *fname) {
|
||||
const char *serr = NULL;
|
||||
int en = errno; /* calls to Lua API may change this value */
|
||||
char buf[512] = { 0 };
|
||||
if (stat) {
|
||||
lua_pushboolean(L, 1);
|
||||
return 1;
|
||||
}
|
||||
else {
|
||||
lua_pushnil(L);
|
||||
serr = compat53_strerror(en, buf, sizeof(buf));
|
||||
if (fname)
|
||||
lua_pushfstring(L, "%s: %s", fname, serr);
|
||||
else
|
||||
lua_pushstring(L, serr);
|
||||
lua_pushnumber(L, (lua_Number)en);
|
||||
return 3;
|
||||
}
|
||||
}
|
||||
|
||||
|
||||
static int compat53_checkmode (lua_State *L, const char *mode, const char *modename, int err) {
|
||||
if (mode && strchr(mode, modename[0]) == NULL) {
|
||||
lua_pushfstring(L, "attempt to load a %s chunk (mode is '%s')", modename, mode);
|
||||
return err;
|
||||
}
|
||||
return LUA_OK;
|
||||
}
|
||||
|
||||
|
||||
typedef struct {
|
||||
lua_Reader reader;
|
||||
void *ud;
|
||||
int has_peeked_data;
|
||||
const char *peeked_data;
|
||||
size_t peeked_data_size;
|
||||
} compat53_reader_data;
|
||||
|
||||
|
||||
static const char *compat53_reader (lua_State *L, void *ud, size_t *size) {
|
||||
compat53_reader_data *data = (compat53_reader_data *)ud;
|
||||
if (data->has_peeked_data) {
|
||||
data->has_peeked_data = 0;
|
||||
*size = data->peeked_data_size;
|
||||
return data->peeked_data;
|
||||
} else
|
||||
return data->reader(L, data->ud, size);
|
||||
}
|
||||
|
||||
|
||||
COMPAT53_API int lua_load (lua_State *L, lua_Reader reader, void *data, const char *source, const char *mode) {
|
||||
int status = LUA_OK;
|
||||
compat53_reader_data compat53_data = { 0, NULL, 1, 0, 0 };
|
||||
compat53_data.reader = reader;
|
||||
compat53_data.ud = data;
|
||||
compat53_data.peeked_data = reader(L, data, &(compat53_data.peeked_data_size));
|
||||
if (compat53_data.peeked_data && compat53_data.peeked_data_size &&
|
||||
compat53_data.peeked_data[0] == LUA_SIGNATURE[0]) /* binary file? */
|
||||
status = compat53_checkmode(L, mode, "binary", LUA_ERRSYNTAX);
|
||||
else
|
||||
status = compat53_checkmode(L, mode, "text", LUA_ERRSYNTAX);
|
||||
if (status != LUA_OK)
|
||||
return status;
|
||||
/* we need to call the original 5.1 version of lua_load! */
|
||||
#undef lua_load
|
||||
return lua_load(L, compat53_reader, &compat53_data, source);
|
||||
#define lua_load COMPAT53_CONCAT(COMPAT53_PREFIX, _load_53)
|
||||
}
|
||||
|
||||
|
||||
typedef struct {
|
||||
int n; /* number of pre-read characters */
|
||||
FILE *f; /* file being read */
|
||||
char buff[COMPAT53_LUA_FILE_BUFFER_SIZE]; /* area for reading file */
|
||||
} compat53_LoadF;
|
||||
|
||||
|
||||
static const char *compat53_getF (lua_State *L, void *ud, size_t *size) {
|
||||
compat53_LoadF *lf = (compat53_LoadF *)ud;
|
||||
(void)L; /* not used */
|
||||
if (lf->n > 0) { /* are there pre-read characters to be read? */
|
||||
*size = lf->n; /* return them (chars already in buffer) */
|
||||
lf->n = 0; /* no more pre-read characters */
|
||||
}
|
||||
else { /* read a block from file */
|
||||
/* 'fread' can return > 0 *and* set the EOF flag. If next call to
|
||||
'compat53_getF' called 'fread', it might still wait for user input.
|
||||
The next check avoids this problem. */
|
||||
if (feof(lf->f)) return NULL;
|
||||
*size = fread(lf->buff, 1, sizeof(lf->buff), lf->f); /* read block */
|
||||
}
|
||||
return lf->buff;
|
||||
}
|
||||
|
||||
|
||||
static int compat53_errfile (lua_State *L, const char *what, int fnameindex) {
|
||||
char buf[512] = {0};
|
||||
const char *serr = compat53_strerror(errno, buf, sizeof(buf));
|
||||
const char *filename = lua_tostring(L, fnameindex) + 1;
|
||||
lua_pushfstring(L, "cannot %s %s: %s", what, filename, serr);
|
||||
lua_remove(L, fnameindex);
|
||||
return LUA_ERRFILE;
|
||||
}
|
||||
|
||||
|
||||
static int compat53_skipBOM (compat53_LoadF *lf) {
|
||||
const char *p = "\xEF\xBB\xBF"; /* UTF-8 BOM mark */
|
||||
int c;
|
||||
lf->n = 0;
|
||||
do {
|
||||
c = getc(lf->f);
|
||||
if (c == EOF || c != *(const unsigned char *)p++) return c;
|
||||
lf->buff[lf->n++] = (char)c; /* to be read by the parser */
|
||||
} while (*p != '\0');
|
||||
lf->n = 0; /* prefix matched; discard it */
|
||||
return getc(lf->f); /* return next character */
|
||||
}
|
||||
|
||||
|
||||
/*
|
||||
** reads the first character of file 'f' and skips an optional BOM mark
|
||||
** in its beginning plus its first line if it starts with '#'. Returns
|
||||
** true if it skipped the first line. In any case, '*cp' has the
|
||||
** first "valid" character of the file (after the optional BOM and
|
||||
** a first-line comment).
|
||||
*/
|
||||
static int compat53_skipcomment (compat53_LoadF *lf, int *cp) {
|
||||
int c = *cp = compat53_skipBOM(lf);
|
||||
if (c == '#') { /* first line is a comment (Unix exec. file)? */
|
||||
do { /* skip first line */
|
||||
c = getc(lf->f);
|
||||
} while (c != EOF && c != '\n');
|
||||
*cp = getc(lf->f); /* skip end-of-line, if present */
|
||||
return 1; /* there was a comment */
|
||||
}
|
||||
else return 0; /* no comment */
|
||||
}
|
||||
|
||||
|
||||
COMPAT53_API int luaL_loadfilex (lua_State *L, const char *filename, const char *mode) {
|
||||
compat53_LoadF lf;
|
||||
int status, readstatus;
|
||||
int c;
|
||||
int fnameindex = lua_gettop(L) + 1; /* index of filename on the stack */
|
||||
if (filename == NULL) {
|
||||
lua_pushliteral(L, "=stdin");
|
||||
lf.f = stdin;
|
||||
}
|
||||
else {
|
||||
lua_pushfstring(L, "@%s", filename);
|
||||
#if defined(_MSC_VER)
|
||||
/* This code is here to stop a deprecation error that stops builds
|
||||
* if a certain macro is defined. While normally not caring would
|
||||
* be best, some header-only libraries and builds can't afford to
|
||||
* dictate this to the user. A quick check shows that fopen_s this
|
||||
* goes back to VS 2005, and _fsopen goes back to VS 2003 .NET,
|
||||
* possibly even before that so we don't need to do any version
|
||||
* number checks, since this has been there since forever. */
|
||||
|
||||
/* TO USER: if you want the behavior of typical fopen_s/fopen,
|
||||
* which does lock the file on VC++, define the macro used below to 0 */
|
||||
#if COMPAT53_FOPEN_NO_LOCK
|
||||
lf.f = _fsopen(filename, "r", _SH_DENYNO); /* do not lock the file in any way */
|
||||
if (lf.f == NULL)
|
||||
return compat53_errfile(L, "open", fnameindex);
|
||||
#else /* use default locking version */
|
||||
if (fopen_s(&lf.f, filename, "r") != 0)
|
||||
return compat53_errfile(L, "open", fnameindex);
|
||||
#endif /* Locking vs. No-locking fopen variants */
|
||||
#else
|
||||
lf.f = fopen(filename, "r"); /* default stdlib doesn't forcefully lock files here */
|
||||
if (lf.f == NULL) return compat53_errfile(L, "open", fnameindex);
|
||||
#endif
|
||||
}
|
||||
if (compat53_skipcomment(&lf, &c)) /* read initial portion */
|
||||
lf.buff[lf.n++] = '\n'; /* add line to correct line numbers */
|
||||
if (c == LUA_SIGNATURE[0] && filename) { /* binary file? */
|
||||
#if defined(_MSC_VER)
|
||||
if (freopen_s(&lf.f, filename, "rb", lf.f) != 0)
|
||||
return compat53_errfile(L, "reopen", fnameindex);
|
||||
#else
|
||||
lf.f = freopen(filename, "rb", lf.f); /* reopen in binary mode */
|
||||
if (lf.f == NULL) return compat53_errfile(L, "reopen", fnameindex);
|
||||
#endif
|
||||
compat53_skipcomment(&lf, &c); /* re-read initial portion */
|
||||
}
|
||||
if (c != EOF)
|
||||
lf.buff[lf.n++] = (char)c; /* 'c' is the first character of the stream */
|
||||
status = lua_load(L, &compat53_getF, &lf, lua_tostring(L, -1), mode);
|
||||
readstatus = ferror(lf.f);
|
||||
if (filename) fclose(lf.f); /* close file (even in case of errors) */
|
||||
if (readstatus) {
|
||||
lua_settop(L, fnameindex); /* ignore results from 'lua_load' */
|
||||
return compat53_errfile(L, "read", fnameindex);
|
||||
}
|
||||
lua_remove(L, fnameindex);
|
||||
return status;
|
||||
}
|
||||
|
||||
|
||||
COMPAT53_API int luaL_loadbufferx (lua_State *L, const char *buff, size_t sz, const char *name, const char *mode) {
|
||||
int status = LUA_OK;
|
||||
if (sz > 0 && buff[0] == LUA_SIGNATURE[0]) {
|
||||
status = compat53_checkmode(L, mode, "binary", LUA_ERRSYNTAX);
|
||||
}
|
||||
else {
|
||||
status = compat53_checkmode(L, mode, "text", LUA_ERRSYNTAX);
|
||||
}
|
||||
if (status != LUA_OK)
|
||||
return status;
|
||||
return luaL_loadbuffer(L, buff, sz, name);
|
||||
}
|
||||
|
||||
|
||||
#if !defined(l_inspectstat) && \
|
||||
(defined(unix) || defined(__unix) || defined(__unix__) || \
|
||||
defined(__TOS_AIX__) || defined(_SYSTYPE_BSD) || \
|
||||
(defined(__APPLE__) && defined(__MACH__)))
|
||||
/* some form of unix; check feature macros in unistd.h for details */
|
||||
# include <unistd.h>
|
||||
/* check posix version; the relevant include files and macros probably
|
||||
* were available before 2001, but I'm not sure */
|
||||
# if defined(_POSIX_VERSION) && _POSIX_VERSION >= 200112L
|
||||
# include <sys/wait.h>
|
||||
# define l_inspectstat(stat,what) \
|
||||
if (WIFEXITED(stat)) { stat = WEXITSTATUS(stat); } \
|
||||
else if (WIFSIGNALED(stat)) { stat = WTERMSIG(stat); what = "signal"; }
|
||||
# endif
|
||||
#endif
|
||||
|
||||
/* provide default (no-op) version */
|
||||
#if !defined(l_inspectstat)
|
||||
# define l_inspectstat(stat,what) ((void)0)
|
||||
#endif
|
||||
|
||||
|
||||
COMPAT53_API int luaL_execresult (lua_State *L, int stat) {
|
||||
const char *what = "exit";
|
||||
if (stat == -1)
|
||||
return luaL_fileresult(L, 0, NULL);
|
||||
else {
|
||||
l_inspectstat(stat, what);
|
||||
if (*what == 'e' && stat == 0)
|
||||
lua_pushboolean(L, 1);
|
||||
else
|
||||
lua_pushnil(L);
|
||||
lua_pushstring(L, what);
|
||||
lua_pushinteger(L, stat);
|
||||
return 3;
|
||||
}
|
||||
}
|
||||
|
||||
|
||||
COMPAT53_API void luaL_buffinit (lua_State *L, luaL_Buffer_53 *B) {
|
||||
/* make it crash if used via pointer to a 5.1-style luaL_Buffer */
|
||||
B->b.p = NULL;
|
||||
B->b.L = NULL;
|
||||
B->b.lvl = 0;
|
||||
/* reuse the buffer from the 5.1-style luaL_Buffer though! */
|
||||
B->ptr = B->b.buffer;
|
||||
B->capacity = LUAL_BUFFERSIZE;
|
||||
B->nelems = 0;
|
||||
B->L2 = L;
|
||||
}
|
||||
|
||||
|
||||
COMPAT53_API char *luaL_prepbuffsize (luaL_Buffer_53 *B, size_t s) {
|
||||
if (B->capacity - B->nelems < s) { /* needs to grow */
|
||||
char* newptr = NULL;
|
||||
size_t newcap = B->capacity * 2;
|
||||
if (newcap - B->nelems < s)
|
||||
newcap = B->nelems + s;
|
||||
if (newcap < B->capacity) /* overflow */
|
||||
luaL_error(B->L2, "buffer too large");
|
||||
newptr = (char*)lua_newuserdata(B->L2, newcap);
|
||||
memcpy(newptr, B->ptr, B->nelems);
|
||||
if (B->ptr != B->b.buffer)
|
||||
lua_replace(B->L2, -2); /* remove old buffer */
|
||||
B->ptr = newptr;
|
||||
B->capacity = newcap;
|
||||
}
|
||||
return B->ptr+B->nelems;
|
||||
}
|
||||
|
||||
|
||||
COMPAT53_API void luaL_addlstring (luaL_Buffer_53 *B, const char *s, size_t l) {
|
||||
memcpy(luaL_prepbuffsize(B, l), s, l);
|
||||
luaL_addsize(B, l);
|
||||
}
|
||||
|
||||
|
||||
COMPAT53_API void luaL_addvalue (luaL_Buffer_53 *B) {
|
||||
size_t len = 0;
|
||||
const char *s = lua_tolstring(B->L2, -1, &len);
|
||||
if (!s)
|
||||
luaL_error(B->L2, "cannot convert value to string");
|
||||
if (B->ptr != B->b.buffer)
|
||||
lua_insert(B->L2, -2); /* userdata buffer must be at stack top */
|
||||
luaL_addlstring(B, s, len);
|
||||
lua_remove(B->L2, B->ptr != B->b.buffer ? -2 : -1);
|
||||
}
|
||||
|
||||
|
||||
void luaL_pushresult (luaL_Buffer_53 *B) {
|
||||
lua_pushlstring(B->L2, B->ptr, B->nelems);
|
||||
if (B->ptr != B->b.buffer)
|
||||
lua_replace(B->L2, -2); /* remove userdata buffer */
|
||||
}
|
||||
|
||||
|
||||
#endif /* Lua 5.1 */
|
||||
|
||||
|
||||
|
||||
/* definitions for Lua 5.1 and Lua 5.2 */
|
||||
#if defined( LUA_VERSION_NUM ) && LUA_VERSION_NUM <= 502
|
||||
|
||||
|
||||
COMPAT53_API int lua_geti (lua_State *L, int index, lua_Integer i) {
|
||||
index = lua_absindex(L, index);
|
||||
lua_pushinteger(L, i);
|
||||
lua_gettable(L, index);
|
||||
return lua_type(L, -1);
|
||||
}
|
||||
|
||||
|
||||
#ifndef LUA_EXTRASPACE
|
||||
#define LUA_EXTRASPACE (sizeof(void*))
|
||||
#endif
|
||||
|
||||
COMPAT53_API void *lua_getextraspace (lua_State *L) {
|
||||
int is_main = 0;
|
||||
void *ptr = NULL;
|
||||
luaL_checkstack(L, 4, "not enough stack slots available");
|
||||
lua_pushliteral(L, "__compat53_extraspace");
|
||||
lua_pushvalue(L, -1);
|
||||
lua_rawget(L, LUA_REGISTRYINDEX);
|
||||
if (!lua_istable(L, -1)) {
|
||||
lua_pop(L, 1);
|
||||
lua_createtable(L, 0, 2);
|
||||
lua_createtable(L, 0, 1);
|
||||
lua_pushliteral(L, "k");
|
||||
lua_setfield(L, -2, "__mode");
|
||||
lua_setmetatable(L, -2);
|
||||
lua_pushvalue(L, -2);
|
||||
lua_pushvalue(L, -2);
|
||||
lua_rawset(L, LUA_REGISTRYINDEX);
|
||||
}
|
||||
lua_replace(L, -2);
|
||||
is_main = lua_pushthread(L);
|
||||
lua_rawget(L, -2);
|
||||
ptr = lua_touserdata(L, -1);
|
||||
if (!ptr) {
|
||||
lua_pop(L, 1);
|
||||
ptr = lua_newuserdata(L, LUA_EXTRASPACE);
|
||||
if (is_main) {
|
||||
memset(ptr, '\0', LUA_EXTRASPACE);
|
||||
lua_pushthread(L);
|
||||
lua_pushvalue(L, -2);
|
||||
lua_rawset(L, -4);
|
||||
lua_pushboolean(L, 1);
|
||||
lua_pushvalue(L, -2);
|
||||
lua_rawset(L, -4);
|
||||
} else {
|
||||
void* mptr = NULL;
|
||||
lua_pushboolean(L, 1);
|
||||
lua_rawget(L, -3);
|
||||
mptr = lua_touserdata(L, -1);
|
||||
if (mptr)
|
||||
memcpy(ptr, mptr, LUA_EXTRASPACE);
|
||||
else
|
||||
memset(ptr, '\0', LUA_EXTRASPACE);
|
||||
lua_pop(L, 1);
|
||||
lua_pushthread(L);
|
||||
lua_pushvalue(L, -2);
|
||||
lua_rawset(L, -4);
|
||||
}
|
||||
}
|
||||
lua_pop(L, 2);
|
||||
return ptr;
|
||||
}
|
||||
|
||||
|
||||
COMPAT53_API int lua_isinteger (lua_State *L, int index) {
|
||||
if (lua_type(L, index) == LUA_TNUMBER) {
|
||||
lua_Number n = lua_tonumber(L, index);
|
||||
lua_Integer i = lua_tointeger(L, index);
|
||||
if (i == n)
|
||||
return 1;
|
||||
}
|
||||
return 0;
|
||||
}
|
||||
|
||||
|
||||
COMPAT53_API lua_Integer lua_tointegerx (lua_State *L, int i, int *isnum) {
|
||||
int ok = 0;
|
||||
lua_Number n = lua_tonumberx(L, i, &ok);
|
||||
if (ok) {
|
||||
if (n == (lua_Integer)n) {
|
||||
if (isnum)
|
||||
*isnum = 1;
|
||||
return (lua_Integer)n;
|
||||
}
|
||||
}
|
||||
if (isnum)
|
||||
*isnum = 0;
|
||||
return 0;
|
||||
}
|
||||
|
||||
|
||||
static void compat53_reverse (lua_State *L, int a, int b) {
|
||||
for (; a < b; ++a, --b) {
|
||||
lua_pushvalue(L, a);
|
||||
lua_pushvalue(L, b);
|
||||
lua_replace(L, a);
|
||||
lua_replace(L, b);
|
||||
}
|
||||
}
|
||||
|
||||
|
||||
COMPAT53_API void lua_rotate (lua_State *L, int idx, int n) {
|
||||
int n_elems = 0;
|
||||
idx = lua_absindex(L, idx);
|
||||
n_elems = lua_gettop(L)-idx+1;
|
||||
if (n < 0)
|
||||
n += n_elems;
|
||||
if ( n > 0 && n < n_elems) {
|
||||
luaL_checkstack(L, 2, "not enough stack slots available");
|
||||
n = n_elems - n;
|
||||
compat53_reverse(L, idx, idx+n-1);
|
||||
compat53_reverse(L, idx+n, idx+n_elems-1);
|
||||
compat53_reverse(L, idx, idx+n_elems-1);
|
||||
}
|
||||
}
|
||||
|
||||
|
||||
COMPAT53_API void lua_seti (lua_State *L, int index, lua_Integer i) {
|
||||
luaL_checkstack(L, 1, "not enough stack slots available");
|
||||
index = lua_absindex(L, index);
|
||||
lua_pushinteger(L, i);
|
||||
lua_insert(L, -2);
|
||||
lua_settable(L, index);
|
||||
}
|
||||
|
||||
|
||||
#if !defined(lua_str2number)
|
||||
# define lua_str2number(s, p) strtod((s), (p))
|
||||
#endif
|
||||
|
||||
COMPAT53_API size_t lua_stringtonumber (lua_State *L, const char *s) {
|
||||
char* endptr;
|
||||
lua_Number n = lua_str2number(s, &endptr);
|
||||
if (endptr != s) {
|
||||
while (*endptr != '\0' && isspace((unsigned char)*endptr))
|
||||
++endptr;
|
||||
if (*endptr == '\0') {
|
||||
lua_pushnumber(L, n);
|
||||
return endptr - s + 1;
|
||||
}
|
||||
}
|
||||
return 0;
|
||||
}
|
||||
|
||||
|
||||
COMPAT53_API const char *luaL_tolstring (lua_State *L, int idx, size_t *len) {
|
||||
if (!luaL_callmeta(L, idx, "__tostring")) {
|
||||
int t = lua_type(L, idx), tt = 0;
|
||||
char const* name = NULL;
|
||||
switch (t) {
|
||||
case LUA_TNIL:
|
||||
lua_pushliteral(L, "nil");
|
||||
break;
|
||||
case LUA_TSTRING:
|
||||
case LUA_TNUMBER:
|
||||
lua_pushvalue(L, idx);
|
||||
break;
|
||||
case LUA_TBOOLEAN:
|
||||
if (lua_toboolean(L, idx))
|
||||
lua_pushliteral(L, "true");
|
||||
else
|
||||
lua_pushliteral(L, "false");
|
||||
break;
|
||||
default:
|
||||
tt = luaL_getmetafield(L, idx, "__name");
|
||||
name = (tt == LUA_TSTRING) ? lua_tostring(L, -1) : lua_typename(L, t);
|
||||
lua_pushfstring(L, "%s: %p", name, lua_topointer(L, idx));
|
||||
if (tt != LUA_TNIL)
|
||||
lua_replace(L, -2);
|
||||
break;
|
||||
}
|
||||
} else {
|
||||
if (!lua_isstring(L, -1))
|
||||
luaL_error(L, "'__tostring' must return a string");
|
||||
}
|
||||
return lua_tolstring(L, -1, len);
|
||||
}
|
||||
|
||||
|
||||
COMPAT53_API void luaL_requiref (lua_State *L, const char *modname,
|
||||
lua_CFunction openf, int glb) {
|
||||
luaL_checkstack(L, 3, "not enough stack slots available");
|
||||
luaL_getsubtable(L, LUA_REGISTRYINDEX, "_LOADED");
|
||||
if (lua_getfield(L, -1, modname) == LUA_TNIL) {
|
||||
lua_pop(L, 1);
|
||||
lua_pushcfunction(L, openf);
|
||||
lua_pushstring(L, modname);
|
||||
#ifndef COMPAT53_LUAJIT
|
||||
lua_call(L, 1, 1);
|
||||
lua_pushvalue(L, -1);
|
||||
lua_setfield(L, -3, modname);
|
||||
#else
|
||||
lua_call(L, 1, 0);
|
||||
lua_getfield(L, -1, modname);
|
||||
#endif /* COMPAT53_LUAJIT */
|
||||
}
|
||||
if (glb) {
|
||||
lua_pushvalue(L, -1);
|
||||
lua_setglobal(L, modname);
|
||||
}
|
||||
lua_replace(L, -2);
|
||||
}
|
||||
|
||||
|
||||
#endif /* Lua 5.1 and 5.2 */
|
||||
|
||||
|
||||
#endif /* COMPAT53_C_ */
|
||||
|
||||
|
||||
/*********************************************************************
|
||||
* This file contains parts of Lua 5.2's and Lua 5.3's source code:
|
||||
*
|
||||
* Copyright (C) 1994-2014 Lua.org, PUC-Rio.
|
||||
*
|
||||
* Permission is hereby granted, free of charge, to any person obtaining
|
||||
* a copy of this software and associated documentation files (the
|
||||
* "Software"), to deal in the Software without restriction, including
|
||||
* without limitation the rights to use, copy, modify, merge, publish,
|
||||
* distribute, sublicense, and/or sell copies of the Software, and to
|
||||
* permit persons to whom the Software is furnished to do so, subject to
|
||||
* the following conditions:
|
||||
*
|
||||
* The above copyright notice and this permission notice shall be
|
||||
* included in all copies or substantial portions of the Software.
|
||||
*
|
||||
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
|
||||
* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
|
||||
* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
|
||||
* IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY
|
||||
* CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,
|
||||
* TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE
|
||||
* SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
|
||||
*********************************************************************/
|
||||
|
||||
|
|
@ -0,0 +1,424 @@
|
|||
#ifndef COMPAT53_H_
|
||||
#define COMPAT53_H_
|
||||
|
||||
#include <stddef.h>
|
||||
#include <limits.h>
|
||||
#include <string.h>
|
||||
#if defined(__cplusplus) && !defined(COMPAT53_LUA_CPP)
|
||||
extern "C" {
|
||||
#endif
|
||||
#include <lua.h>
|
||||
#include <lauxlib.h>
|
||||
#include <lualib.h>
|
||||
#if defined(__cplusplus) && !defined(COMPAT53_LUA_CPP)
|
||||
}
|
||||
#endif
|
||||
|
||||
|
||||
#undef COMPAT53_INCLUDE_SOURCE
|
||||
#if defined(COMPAT53_PREFIX)
|
||||
/* - change the symbol names of functions to avoid linker conflicts
|
||||
* - compat-5.3.c needs to be compiled (and linked) separately
|
||||
*/
|
||||
# if !defined(COMPAT53_API)
|
||||
# define COMPAT53_API extern
|
||||
# endif
|
||||
#else /* COMPAT53_PREFIX */
|
||||
/* - make all functions static and include the source.
|
||||
* - compat-5.3.c doesn't need to be compiled (and linked) separately
|
||||
*/
|
||||
# define COMPAT53_PREFIX compat53
|
||||
# undef COMPAT53_API
|
||||
# if defined(__GNUC__) || defined(__clang__)
|
||||
# define COMPAT53_API __attribute__((__unused__)) static
|
||||
# else
|
||||
# define COMPAT53_API static
|
||||
# endif
|
||||
# define COMPAT53_INCLUDE_SOURCE
|
||||
#endif /* COMPAT53_PREFIX */
|
||||
|
||||
#define COMPAT53_CONCAT_HELPER(a, b) a##b
|
||||
#define COMPAT53_CONCAT(a, b) COMPAT53_CONCAT_HELPER(a, b)
|
||||
|
||||
|
||||
|
||||
/* declarations for Lua 5.1 */
|
||||
#if defined(LUA_VERSION_NUM) && LUA_VERSION_NUM == 501
|
||||
|
||||
/* XXX not implemented:
|
||||
* lua_arith (new operators)
|
||||
* lua_upvalueid
|
||||
* lua_upvaluejoin
|
||||
* lua_version
|
||||
* lua_yieldk
|
||||
*/
|
||||
|
||||
#ifndef LUA_OK
|
||||
# define LUA_OK 0
|
||||
#endif
|
||||
#ifndef LUA_OPADD
|
||||
# define LUA_OPADD 0
|
||||
#endif
|
||||
#ifndef LUA_OPSUB
|
||||
# define LUA_OPSUB 1
|
||||
#endif
|
||||
#ifndef LUA_OPMUL
|
||||
# define LUA_OPMUL 2
|
||||
#endif
|
||||
#ifndef LUA_OPDIV
|
||||
# define LUA_OPDIV 3
|
||||
#endif
|
||||
#ifndef LUA_OPMOD
|
||||
# define LUA_OPMOD 4
|
||||
#endif
|
||||
#ifndef LUA_OPPOW
|
||||
# define LUA_OPPOW 5
|
||||
#endif
|
||||
#ifndef LUA_OPUNM
|
||||
# define LUA_OPUNM 6
|
||||
#endif
|
||||
#ifndef LUA_OPEQ
|
||||
# define LUA_OPEQ 0
|
||||
#endif
|
||||
#ifndef LUA_OPLT
|
||||
# define LUA_OPLT 1
|
||||
#endif
|
||||
#ifndef LUA_OPLE
|
||||
# define LUA_OPLE 2
|
||||
#endif
|
||||
|
||||
/* LuaJIT/Lua 5.1 does not have the updated
|
||||
* error codes for thread status/function returns (but some patched versions do)
|
||||
* define it only if it's not found
|
||||
*/
|
||||
#if !defined(LUA_ERRGCMM)
|
||||
/* Use + 2 because in some versions of Lua (Lua 5.1)
|
||||
* LUA_ERRFILE is defined as (LUA_ERRERR+1)
|
||||
* so we need to avoid it (LuaJIT might have something at this
|
||||
* integer value too)
|
||||
*/
|
||||
# define LUA_ERRGCMM (LUA_ERRERR + 2)
|
||||
#endif /* LUA_ERRGCMM define */
|
||||
|
||||
typedef size_t lua_Unsigned;
|
||||
|
||||
typedef struct luaL_Buffer_53 {
|
||||
luaL_Buffer b; /* make incorrect code crash! */
|
||||
char *ptr;
|
||||
size_t nelems;
|
||||
size_t capacity;
|
||||
lua_State *L2;
|
||||
} luaL_Buffer_53;
|
||||
#define luaL_Buffer luaL_Buffer_53
|
||||
|
||||
/* In PUC-Rio 5.1, userdata is a simple FILE*
|
||||
* In LuaJIT, it's a struct where the first member is a FILE*
|
||||
* We can't support the `closef` member
|
||||
*/
|
||||
typedef struct luaL_Stream {
|
||||
FILE *f;
|
||||
} luaL_Stream;
|
||||
|
||||
#define lua_absindex COMPAT53_CONCAT(COMPAT53_PREFIX, _absindex)
|
||||
COMPAT53_API int lua_absindex (lua_State *L, int i);
|
||||
|
||||
#define lua_arith COMPAT53_CONCAT(COMPAT53_PREFIX, _arith)
|
||||
COMPAT53_API void lua_arith (lua_State *L, int op);
|
||||
|
||||
#define lua_compare COMPAT53_CONCAT(COMPAT53_PREFIX, _compare)
|
||||
COMPAT53_API int lua_compare (lua_State *L, int idx1, int idx2, int op);
|
||||
|
||||
#define lua_copy COMPAT53_CONCAT(COMPAT53_PREFIX, _copy)
|
||||
COMPAT53_API void lua_copy (lua_State *L, int from, int to);
|
||||
|
||||
#define lua_getuservalue(L, i) \
|
||||
(lua_getfenv((L), (i)), lua_type((L), -1))
|
||||
#define lua_setuservalue(L, i) \
|
||||
(luaL_checktype((L), -1, LUA_TTABLE), lua_setfenv((L), (i)))
|
||||
|
||||
#define lua_len COMPAT53_CONCAT(COMPAT53_PREFIX, _len)
|
||||
COMPAT53_API void lua_len (lua_State *L, int i);
|
||||
|
||||
#define lua_pushstring(L, s) \
|
||||
(lua_pushstring((L), (s)), lua_tostring((L), -1))
|
||||
|
||||
#define lua_pushlstring(L, s, len) \
|
||||
((((len) == 0) ? lua_pushlstring((L), "", 0) : lua_pushlstring((L), (s), (len))), lua_tostring((L), -1))
|
||||
|
||||
#ifndef luaL_newlibtable
|
||||
# define luaL_newlibtable(L, l) \
|
||||
(lua_createtable((L), 0, sizeof((l))/sizeof(*(l))-1))
|
||||
#endif
|
||||
#ifndef luaL_newlib
|
||||
# define luaL_newlib(L, l) \
|
||||
(luaL_newlibtable((L), (l)), luaL_register((L), NULL, (l)))
|
||||
#endif
|
||||
|
||||
#define lua_pushglobaltable(L) \
|
||||
lua_pushvalue((L), LUA_GLOBALSINDEX)
|
||||
|
||||
#define lua_rawgetp COMPAT53_CONCAT(COMPAT53_PREFIX, _rawgetp)
|
||||
COMPAT53_API int lua_rawgetp (lua_State *L, int i, const void *p);
|
||||
|
||||
#define lua_rawsetp COMPAT53_CONCAT(COMPAT53_PREFIX, _rawsetp)
|
||||
COMPAT53_API void lua_rawsetp(lua_State *L, int i, const void *p);
|
||||
|
||||
#define lua_rawlen(L, i) lua_objlen((L), (i))
|
||||
|
||||
#define lua_tointeger(L, i) lua_tointegerx((L), (i), NULL)
|
||||
|
||||
#define lua_tonumberx COMPAT53_CONCAT(COMPAT53_PREFIX, _tonumberx)
|
||||
COMPAT53_API lua_Number lua_tonumberx (lua_State *L, int i, int *isnum);
|
||||
|
||||
#define luaL_checkversion COMPAT53_CONCAT(COMPAT53_PREFIX, L_checkversion)
|
||||
COMPAT53_API void luaL_checkversion (lua_State *L);
|
||||
|
||||
#define lua_load COMPAT53_CONCAT(COMPAT53_PREFIX, _load_53)
|
||||
COMPAT53_API int lua_load (lua_State *L, lua_Reader reader, void *data, const char* source, const char* mode);
|
||||
|
||||
#define luaL_loadfilex COMPAT53_CONCAT(COMPAT53_PREFIX, L_loadfilex)
|
||||
COMPAT53_API int luaL_loadfilex (lua_State *L, const char *filename, const char *mode);
|
||||
|
||||
#define luaL_loadbufferx COMPAT53_CONCAT(COMPAT53_PREFIX, L_loadbufferx)
|
||||
COMPAT53_API int luaL_loadbufferx (lua_State *L, const char *buff, size_t sz, const char *name, const char *mode);
|
||||
|
||||
#define luaL_checkstack COMPAT53_CONCAT(COMPAT53_PREFIX, L_checkstack_53)
|
||||
COMPAT53_API void luaL_checkstack (lua_State *L, int sp, const char *msg);
|
||||
|
||||
#define luaL_getsubtable COMPAT53_CONCAT(COMPAT53_PREFIX, L_getsubtable)
|
||||
COMPAT53_API int luaL_getsubtable (lua_State* L, int i, const char *name);
|
||||
|
||||
#define luaL_len COMPAT53_CONCAT(COMPAT53_PREFIX, L_len)
|
||||
COMPAT53_API lua_Integer luaL_len (lua_State *L, int i);
|
||||
|
||||
#define luaL_setfuncs COMPAT53_CONCAT(COMPAT53_PREFIX, L_setfuncs)
|
||||
COMPAT53_API void luaL_setfuncs (lua_State *L, const luaL_Reg *l, int nup);
|
||||
|
||||
#define luaL_setmetatable COMPAT53_CONCAT(COMPAT53_PREFIX, L_setmetatable)
|
||||
COMPAT53_API void luaL_setmetatable (lua_State *L, const char *tname);
|
||||
|
||||
#define luaL_testudata COMPAT53_CONCAT(COMPAT53_PREFIX, L_testudata)
|
||||
COMPAT53_API void *luaL_testudata (lua_State *L, int i, const char *tname);
|
||||
|
||||
#define luaL_traceback COMPAT53_CONCAT(COMPAT53_PREFIX, L_traceback)
|
||||
COMPAT53_API void luaL_traceback (lua_State *L, lua_State *L1, const char *msg, int level);
|
||||
|
||||
#define luaL_fileresult COMPAT53_CONCAT(COMPAT53_PREFIX, L_fileresult)
|
||||
COMPAT53_API int luaL_fileresult (lua_State *L, int stat, const char *fname);
|
||||
|
||||
#define luaL_execresult COMPAT53_CONCAT(COMPAT53_PREFIX, L_execresult)
|
||||
COMPAT53_API int luaL_execresult (lua_State *L, int stat);
|
||||
|
||||
#define lua_callk(L, na, nr, ctx, cont) \
|
||||
((void)(ctx), (void)(cont), lua_call((L), (na), (nr)))
|
||||
#define lua_pcallk(L, na, nr, err, ctx, cont) \
|
||||
((void)(ctx), (void)(cont), lua_pcall((L), (na), (nr), (err)))
|
||||
|
||||
#define lua_resume(L, from, nargs) \
|
||||
((void)(from), lua_resume((L), (nargs)))
|
||||
|
||||
#define luaL_buffinit COMPAT53_CONCAT(COMPAT53_PREFIX, _buffinit_53)
|
||||
COMPAT53_API void luaL_buffinit (lua_State *L, luaL_Buffer_53 *B);
|
||||
|
||||
#define luaL_prepbuffsize COMPAT53_CONCAT(COMPAT53_PREFIX, _prepbufsize_53)
|
||||
COMPAT53_API char *luaL_prepbuffsize (luaL_Buffer_53 *B, size_t s);
|
||||
|
||||
#define luaL_addlstring COMPAT53_CONCAT(COMPAT53_PREFIX, _addlstring_53)
|
||||
COMPAT53_API void luaL_addlstring (luaL_Buffer_53 *B, const char *s, size_t l);
|
||||
|
||||
#define luaL_addvalue COMPAT53_CONCAT(COMPAT53_PREFIX, _addvalue_53)
|
||||
COMPAT53_API void luaL_addvalue (luaL_Buffer_53 *B);
|
||||
|
||||
#define luaL_pushresult COMPAT53_CONCAT(COMPAT53_PREFIX, _pushresult_53)
|
||||
COMPAT53_API void luaL_pushresult (luaL_Buffer_53 *B);
|
||||
|
||||
#undef luaL_buffinitsize
|
||||
#define luaL_buffinitsize(L, B, s) \
|
||||
(luaL_buffinit((L), (B)), luaL_prepbuffsize((B), (s)))
|
||||
|
||||
#undef luaL_prepbuffer
|
||||
#define luaL_prepbuffer(B) \
|
||||
luaL_prepbuffsize((B), LUAL_BUFFERSIZE)
|
||||
|
||||
#undef luaL_addchar
|
||||
#define luaL_addchar(B, c) \
|
||||
((void)((B)->nelems < (B)->capacity || luaL_prepbuffsize((B), 1)), \
|
||||
((B)->ptr[(B)->nelems++] = (c)))
|
||||
|
||||
#undef luaL_addsize
|
||||
#define luaL_addsize(B, s) \
|
||||
((B)->nelems += (s))
|
||||
|
||||
#undef luaL_addstring
|
||||
#define luaL_addstring(B, s) \
|
||||
luaL_addlstring((B), (s), strlen((s)))
|
||||
|
||||
#undef luaL_pushresultsize
|
||||
#define luaL_pushresultsize(B, s) \
|
||||
(luaL_addsize((B), (s)), luaL_pushresult((B)))
|
||||
|
||||
#if defined(LUA_COMPAT_APIINTCASTS)
|
||||
#define lua_pushunsigned(L, n) \
|
||||
lua_pushinteger((L), (lua_Integer)(n))
|
||||
#define lua_tounsignedx(L, i, is) \
|
||||
((lua_Unsigned)lua_tointegerx((L), (i), (is)))
|
||||
#define lua_tounsigned(L, i) \
|
||||
lua_tounsignedx((L), (i), NULL)
|
||||
#define luaL_checkunsigned(L, a) \
|
||||
((lua_Unsigned)luaL_checkinteger((L), (a)))
|
||||
#define luaL_optunsigned(L, a, d) \
|
||||
((lua_Unsigned)luaL_optinteger((L), (a), (lua_Integer)(d)))
|
||||
#endif
|
||||
|
||||
#endif /* Lua 5.1 only */
|
||||
|
||||
|
||||
|
||||
/* declarations for Lua 5.1 and 5.2 */
|
||||
#if defined(LUA_VERSION_NUM) && LUA_VERSION_NUM <= 502
|
||||
|
||||
typedef int lua_KContext;
|
||||
|
||||
typedef int (*lua_KFunction)(lua_State *L, int status, lua_KContext ctx);
|
||||
|
||||
#define lua_dump(L, w, d, s) \
|
||||
((void)(s), lua_dump((L), (w), (d)))
|
||||
|
||||
#define lua_getfield(L, i, k) \
|
||||
(lua_getfield((L), (i), (k)), lua_type((L), -1))
|
||||
|
||||
#define lua_gettable(L, i) \
|
||||
(lua_gettable((L), (i)), lua_type((L), -1))
|
||||
|
||||
#define lua_geti COMPAT53_CONCAT(COMPAT53_PREFIX, _geti)
|
||||
COMPAT53_API int lua_geti (lua_State *L, int index, lua_Integer i);
|
||||
|
||||
#define lua_getextraspace COMPAT53_CONCAT(COMPAT53_PREFIX, _getextraspace)
|
||||
COMPAT53_API void *lua_getextraspace (lua_State *L);
|
||||
|
||||
#define lua_isinteger COMPAT53_CONCAT(COMPAT53_PREFIX, _isinteger)
|
||||
COMPAT53_API int lua_isinteger (lua_State *L, int index);
|
||||
|
||||
#define lua_tointegerx COMPAT53_CONCAT(COMPAT53_PREFIX, _tointegerx_53)
|
||||
COMPAT53_API lua_Integer lua_tointegerx (lua_State *L, int i, int *isnum);
|
||||
|
||||
#define lua_numbertointeger(n, p) \
|
||||
((*(p) = (lua_Integer)(n)), 1)
|
||||
|
||||
#define lua_rawget(L, i) \
|
||||
(lua_rawget((L), (i)), lua_type((L), -1))
|
||||
|
||||
#define lua_rawgeti(L, i, n) \
|
||||
(lua_rawgeti((L), (i), (n)), lua_type((L), -1))
|
||||
|
||||
#define lua_rotate COMPAT53_CONCAT(COMPAT53_PREFIX, _rotate)
|
||||
COMPAT53_API void lua_rotate (lua_State *L, int idx, int n);
|
||||
|
||||
#define lua_seti COMPAT53_CONCAT(COMPAT53_PREFIX, _seti)
|
||||
COMPAT53_API void lua_seti (lua_State *L, int index, lua_Integer i);
|
||||
|
||||
#define lua_stringtonumber COMPAT53_CONCAT(COMPAT53_PREFIX, _stringtonumber)
|
||||
COMPAT53_API size_t lua_stringtonumber (lua_State *L, const char *s);
|
||||
|
||||
#define luaL_tolstring COMPAT53_CONCAT(COMPAT53_PREFIX, L_tolstring)
|
||||
COMPAT53_API const char *luaL_tolstring (lua_State *L, int idx, size_t *len);
|
||||
|
||||
#define luaL_getmetafield(L, o, e) \
|
||||
(luaL_getmetafield((L), (o), (e)) ? lua_type((L), -1) : LUA_TNIL)
|
||||
|
||||
#define luaL_newmetatable(L, tn) \
|
||||
(luaL_newmetatable((L), (tn)) ? (lua_pushstring((L), (tn)), lua_setfield((L), -2, "__name"), 1) : 0)
|
||||
|
||||
#define luaL_requiref COMPAT53_CONCAT(COMPAT53_PREFIX, L_requiref_53)
|
||||
COMPAT53_API void luaL_requiref (lua_State *L, const char *modname,
|
||||
lua_CFunction openf, int glb );
|
||||
|
||||
#endif /* Lua 5.1 and Lua 5.2 */
|
||||
|
||||
|
||||
|
||||
/* declarations for Lua 5.2 */
|
||||
#if defined(LUA_VERSION_NUM) && LUA_VERSION_NUM == 502
|
||||
|
||||
/* XXX not implemented:
|
||||
* lua_isyieldable
|
||||
* lua_arith (new operators)
|
||||
* lua_pushfstring (new formats)
|
||||
*/
|
||||
|
||||
#define lua_getglobal(L, n) \
|
||||
(lua_getglobal((L), (n)), lua_type((L), -1))
|
||||
|
||||
#define lua_getuservalue(L, i) \
|
||||
(lua_getuservalue((L), (i)), lua_type((L), -1))
|
||||
|
||||
#define lua_pushlstring(L, s, len) \
|
||||
(((len) == 0) ? lua_pushlstring((L), "", 0) : lua_pushlstring((L), (s), (len)))
|
||||
|
||||
#define lua_rawgetp(L, i, p) \
|
||||
(lua_rawgetp((L), (i), (p)), lua_type((L), -1))
|
||||
|
||||
#define LUA_KFUNCTION(_name) \
|
||||
static int (_name)(lua_State *L, int status, lua_KContext ctx); \
|
||||
static int (_name ## _52)(lua_State *L) { \
|
||||
lua_KContext ctx; \
|
||||
int status = lua_getctx(L, &ctx); \
|
||||
return (_name)(L, status, ctx); \
|
||||
} \
|
||||
static int (_name)(lua_State *L, int status, lua_KContext ctx)
|
||||
|
||||
#define lua_pcallk(L, na, nr, err, ctx, cont) \
|
||||
lua_pcallk((L), (na), (nr), (err), (ctx), cont ## _52)
|
||||
|
||||
#define lua_callk(L, na, nr, ctx, cont) \
|
||||
lua_callk((L), (na), (nr), (ctx), cont ## _52)
|
||||
|
||||
#define lua_yieldk(L, nr, ctx, cont) \
|
||||
lua_yieldk((L), (nr), (ctx), cont ## _52)
|
||||
|
||||
#ifdef lua_call
|
||||
# undef lua_call
|
||||
# define lua_call(L, na, nr) \
|
||||
(lua_callk)((L), (na), (nr), 0, NULL)
|
||||
#endif
|
||||
|
||||
#ifdef lua_pcall
|
||||
# undef lua_pcall
|
||||
# define lua_pcall(L, na, nr, err) \
|
||||
(lua_pcallk)((L), (na), (nr), (err), 0, NULL)
|
||||
#endif
|
||||
|
||||
#ifdef lua_yield
|
||||
# undef lua_yield
|
||||
# define lua_yield(L, nr) \
|
||||
(lua_yieldk)((L), (nr), 0, NULL)
|
||||
#endif
|
||||
|
||||
#endif /* Lua 5.2 only */
|
||||
|
||||
|
||||
|
||||
/* other Lua versions */
|
||||
#if !defined(LUA_VERSION_NUM) || LUA_VERSION_NUM < 501 || LUA_VERSION_NUM > 504
|
||||
|
||||
# error "unsupported Lua version (i.e. not Lua 5.1, 5.2, 5.3, or 5.4)"
|
||||
|
||||
#endif /* other Lua versions except 5.1, 5.2, 5.3, and 5.4 */
|
||||
|
||||
|
||||
|
||||
/* helper macro for defining continuation functions (for every version
|
||||
* *except* Lua 5.2) */
|
||||
#ifndef LUA_KFUNCTION
|
||||
#define LUA_KFUNCTION(_name) \
|
||||
static int (_name)(lua_State *L, int status, lua_KContext ctx)
|
||||
#endif
|
||||
|
||||
|
||||
#if defined(COMPAT53_INCLUDE_SOURCE)
|
||||
# include "compat-5.3.c"
|
||||
#endif
|
||||
|
||||
|
||||
#endif /* COMPAT53_H_ */
|
||||
|
||||
|
|
@ -0,0 +1,432 @@
|
|||
// The MIT License (MIT)
|
||||
//
|
||||
// Copyright (c) 2019-2021 A. Orlenko
|
||||
//
|
||||
// Permission is hereby granted, free of charge, to any person obtaining a copy
|
||||
// of this software and associated documentation files (the "Software"), to deal
|
||||
// in the Software without restriction, including without limitation the rights
|
||||
// to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
|
||||
// copies of the Software, and to permit persons to whom the Software is
|
||||
// furnished to do so, subject to the following conditions:
|
||||
//
|
||||
// The above copyright notice and this permission notice shall be included in
|
||||
// all copies or substantial portions of the Software.
|
||||
//
|
||||
// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
|
||||
// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
|
||||
// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
|
||||
// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
|
||||
// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
|
||||
// OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
|
||||
// THE SOFTWARE.
|
||||
|
||||
#include <lauxlib.h>
|
||||
#include <lua.h>
|
||||
|
||||
#include "compat-5.3.h"
|
||||
|
||||
size_t MLUA_WRAPPED_ERROR_SIZE = 0;
|
||||
size_t MLUA_WRAPPED_PANIC_SIZE = 0;
|
||||
|
||||
const void *MLUA_WRAPPED_ERROR_KEY = NULL;
|
||||
const void *MLUA_WRAPPED_PANIC_KEY = NULL;
|
||||
|
||||
extern void wrapped_error_traceback(lua_State *L, int error_idx, void *error_ud,
|
||||
int has_traceback);
|
||||
|
||||
extern int mlua_hook_proc(lua_State *L, lua_Debug *ar);
|
||||
|
||||
#define max(a, b) (a > b ? a : b)
|
||||
|
||||
typedef struct {
|
||||
const char *data;
|
||||
size_t len;
|
||||
} StringArg;
|
||||
|
||||
// A wrapper around Rust function to protect from triggering longjmp in Rust.
|
||||
// Rust callback expected to return -1 in case of errors or number of output
|
||||
// values.
|
||||
static int lua_call_rust(lua_State *L) {
|
||||
int nargs = lua_gettop(L);
|
||||
|
||||
// We need one extra stack space to store preallocated memory, and at least 2
|
||||
// stack spaces overall for handling error metatables in rust fn
|
||||
int extra_stack = 1;
|
||||
if (nargs < 2) {
|
||||
extra_stack = 2 - nargs;
|
||||
}
|
||||
|
||||
luaL_checkstack(L, extra_stack,
|
||||
"not enough stack space for callback error handling");
|
||||
|
||||
// We cannot shadow rust errors with Lua ones, we pre-allocate enough memory
|
||||
// to store a wrapped error or panic *before* we proceed.
|
||||
lua_newuserdata(L, max(MLUA_WRAPPED_ERROR_SIZE, MLUA_WRAPPED_PANIC_SIZE));
|
||||
lua_rotate(L, 1, 1);
|
||||
|
||||
lua_CFunction rust_callback = lua_touserdata(L, lua_upvalueindex(1));
|
||||
|
||||
int ret = rust_callback(L);
|
||||
if (ret == -1) {
|
||||
lua_error(L);
|
||||
}
|
||||
|
||||
return ret;
|
||||
}
|
||||
|
||||
void lua_call_mlua_hook_proc(lua_State *L, lua_Debug *ar) {
|
||||
luaL_checkstack(L, 2, "not enough stack space for callback error handling");
|
||||
lua_newuserdata(L, max(MLUA_WRAPPED_ERROR_SIZE, MLUA_WRAPPED_PANIC_SIZE));
|
||||
lua_rotate(L, 1, 1);
|
||||
int ret = mlua_hook_proc(L, ar);
|
||||
if (ret == -1) {
|
||||
lua_error(L);
|
||||
}
|
||||
}
|
||||
|
||||
static inline lua_Integer lua_popinteger(lua_State *L) {
|
||||
lua_Integer index = lua_tointeger(L, -1);
|
||||
lua_pop(L, 1);
|
||||
return index;
|
||||
}
|
||||
|
||||
//
|
||||
// Common functions
|
||||
//
|
||||
|
||||
int lua_gc_s(lua_State *L) {
|
||||
int data = lua_popinteger(L);
|
||||
int what = lua_popinteger(L);
|
||||
int ret = lua_gc(L, what, data);
|
||||
lua_pushinteger(L, ret);
|
||||
return 1;
|
||||
}
|
||||
|
||||
int luaL_ref_s(lua_State *L) {
|
||||
int ret = luaL_ref(L, -2);
|
||||
lua_pushinteger(L, ret);
|
||||
return 1;
|
||||
}
|
||||
|
||||
int lua_pushlstring_s(lua_State *L) {
|
||||
StringArg *s = lua_touserdata(L, -1);
|
||||
lua_pop(L, 1);
|
||||
lua_pushlstring(L, s->data, s->len);
|
||||
return 1;
|
||||
}
|
||||
|
||||
int lua_tolstring_s(lua_State *L) {
|
||||
void *len = lua_touserdata(L, -1);
|
||||
lua_pop(L, 1);
|
||||
const char *s = lua_tolstring(L, -1, len);
|
||||
lua_pushlightuserdata(L, (void *)s);
|
||||
return 2;
|
||||
}
|
||||
|
||||
int lua_newthread_s(lua_State *L) {
|
||||
lua_newthread(L);
|
||||
return 1;
|
||||
}
|
||||
|
||||
int lua_newuserdata_s(lua_State *L) {
|
||||
size_t size = lua_tointeger(L, -1);
|
||||
lua_pop(L, 1);
|
||||
lua_newuserdata(L, size);
|
||||
return 1;
|
||||
}
|
||||
|
||||
int lua_pushcclosure_s(lua_State *L) {
|
||||
lua_CFunction fn = lua_touserdata(L, -2);
|
||||
lua_Integer n = lua_tointeger(L, -1);
|
||||
lua_pop(L, 2);
|
||||
lua_pushcclosure(L, fn, n);
|
||||
return 1;
|
||||
}
|
||||
|
||||
int lua_pushrclosure_s(lua_State *L) {
|
||||
lua_Integer n = lua_popinteger(L);
|
||||
lua_pushcclosure(L, lua_call_rust, n);
|
||||
return 1;
|
||||
}
|
||||
|
||||
int luaL_requiref_s(lua_State *L) {
|
||||
const char *modname = lua_touserdata(L, -3);
|
||||
lua_CFunction openf = lua_touserdata(L, -2);
|
||||
int glb = lua_tointeger(L, -1);
|
||||
lua_pop(L, 3);
|
||||
luaL_requiref(L, modname, openf, glb);
|
||||
return 1;
|
||||
}
|
||||
|
||||
//
|
||||
// Table functions
|
||||
//
|
||||
|
||||
int lua_createtable_s(lua_State *L) {
|
||||
int nrec = lua_popinteger(L);
|
||||
int narr = lua_popinteger(L);
|
||||
lua_createtable(L, narr, nrec);
|
||||
return 1;
|
||||
}
|
||||
|
||||
int lua_gettable_s(lua_State *L) {
|
||||
lua_gettable(L, -2);
|
||||
return 1;
|
||||
}
|
||||
|
||||
int lua_settable_s(lua_State *L) {
|
||||
lua_settable(L, -3);
|
||||
return 0;
|
||||
}
|
||||
|
||||
int lua_geti_s(lua_State *L) {
|
||||
lua_Integer index = lua_popinteger(L);
|
||||
lua_geti(L, -1, index);
|
||||
return 1;
|
||||
}
|
||||
|
||||
int lua_rawset_s(lua_State *L) {
|
||||
lua_rawset(L, -3);
|
||||
return 0;
|
||||
}
|
||||
|
||||
int lua_rawseti_s(lua_State *L) {
|
||||
lua_Integer index = lua_popinteger(L);
|
||||
lua_rawseti(L, -2, index);
|
||||
return 0;
|
||||
}
|
||||
|
||||
int lua_rawsetp_s(lua_State *L) {
|
||||
void *p = lua_touserdata(L, -1);
|
||||
lua_pop(L, 1);
|
||||
lua_rawsetp(L, -2, p);
|
||||
return 0;
|
||||
}
|
||||
|
||||
int lua_rawsetfield_s(lua_State *L) {
|
||||
StringArg *s = lua_touserdata(L, -2);
|
||||
lua_pushlstring(L, s->data, s->len);
|
||||
lua_replace(L, -3);
|
||||
lua_rawset(L, -3);
|
||||
return 0;
|
||||
}
|
||||
|
||||
int lua_rawinsert_s(lua_State *L) {
|
||||
lua_Integer index = lua_popinteger(L);
|
||||
lua_Integer size = lua_rawlen(L, -2);
|
||||
|
||||
for (lua_Integer i = size; i >= index; i--) {
|
||||
// table[i+1] = table[i]
|
||||
lua_rawgeti(L, -2, i);
|
||||
lua_rawseti(L, -3, i + 1);
|
||||
}
|
||||
lua_rawseti(L, -2, index);
|
||||
|
||||
return 0;
|
||||
}
|
||||
|
||||
int lua_rawremove_s(lua_State *L) {
|
||||
lua_Integer index = lua_popinteger(L);
|
||||
lua_Integer size = lua_rawlen(L, -1);
|
||||
|
||||
for (lua_Integer i = index; i < size; i++) {
|
||||
lua_rawgeti(L, -1, i + 1);
|
||||
lua_rawseti(L, -2, i);
|
||||
}
|
||||
lua_pushnil(L);
|
||||
lua_rawseti(L, -2, size);
|
||||
|
||||
return 0;
|
||||
}
|
||||
|
||||
int luaL_len_s(lua_State *L) {
|
||||
lua_pushinteger(L, luaL_len(L, -1));
|
||||
return 1;
|
||||
}
|
||||
|
||||
int lua_next_s(lua_State *L) {
|
||||
int ret = lua_next(L, -2);
|
||||
lua_pushinteger(L, ret);
|
||||
return ret == 0 ? 1 : 3;
|
||||
}
|
||||
|
||||
//
|
||||
// Moved from Rust to C
|
||||
//
|
||||
|
||||
// Wrapper to lookup in `field_getters` first, then `methods`, ending
|
||||
// original `__index`. Used only if `field_getters` or `methods` set.
|
||||
int meta_index_impl(lua_State *state) {
|
||||
// stack: self, key
|
||||
luaL_checkstack(state, 2, NULL);
|
||||
|
||||
// lookup in `field_getters` table
|
||||
if (lua_isnil(state, lua_upvalueindex(2)) == 0) {
|
||||
lua_pushvalue(state, -1); // `key` arg
|
||||
if (lua_rawget(state, lua_upvalueindex(2)) != LUA_TNIL) {
|
||||
lua_insert(state, -3); // move function
|
||||
lua_pop(state, 1); // remove `key`
|
||||
lua_call(state, 1, 1);
|
||||
return 1;
|
||||
}
|
||||
lua_pop(state, 1); // pop the nil value
|
||||
}
|
||||
// lookup in `methods` table
|
||||
if (lua_isnil(state, lua_upvalueindex(3)) == 0) {
|
||||
lua_pushvalue(state, -1); // `key` arg
|
||||
if (lua_rawget(state, lua_upvalueindex(3)) != LUA_TNIL) {
|
||||
lua_insert(state, -3);
|
||||
lua_pop(state, 2);
|
||||
return 1;
|
||||
}
|
||||
lua_pop(state, 1); // pop the nil value
|
||||
}
|
||||
|
||||
// lookup in `__index`
|
||||
lua_pushvalue(state, lua_upvalueindex(1));
|
||||
switch (lua_type(state, -1)) {
|
||||
case LUA_TNIL:
|
||||
lua_pop(state, 1); // pop the nil value
|
||||
const char *field = lua_tostring(state, -1);
|
||||
luaL_error(state, "attempt to get an unknown field '%s'", field);
|
||||
break;
|
||||
|
||||
case LUA_TTABLE:
|
||||
lua_insert(state, -2);
|
||||
lua_gettable(state, -2);
|
||||
break;
|
||||
|
||||
case LUA_TFUNCTION:
|
||||
lua_insert(state, -3);
|
||||
lua_call(state, 2, 1);
|
||||
break;
|
||||
}
|
||||
|
||||
return 1;
|
||||
}
|
||||
|
||||
// Similar to `meta_index_impl`, checks `field_setters` table first, then
|
||||
// `__newindex` metamethod. Used only if `field_setters` set.
|
||||
int meta_newindex_impl(lua_State *state) {
|
||||
// stack: self, key, value
|
||||
luaL_checkstack(state, 2, NULL);
|
||||
|
||||
// lookup in `field_setters` table
|
||||
lua_pushvalue(state, -2); // `key` arg
|
||||
if (lua_rawget(state, lua_upvalueindex(2)) != LUA_TNIL) {
|
||||
lua_remove(state, -3); // remove `key`
|
||||
lua_insert(state, -3); // move function
|
||||
lua_call(state, 2, 0);
|
||||
return 0;
|
||||
}
|
||||
lua_pop(state, 1); // pop the nil value
|
||||
|
||||
// lookup in `__newindex`
|
||||
lua_pushvalue(state, lua_upvalueindex(1));
|
||||
switch (lua_type(state, -1)) {
|
||||
case LUA_TNIL:
|
||||
lua_pop(state, 1); // pop the nil value
|
||||
const char *field = lua_tostring(state, -2);
|
||||
luaL_error(state, "attempt to set an unknown field '%s'", field);
|
||||
break;
|
||||
|
||||
case LUA_TTABLE:
|
||||
lua_insert(state, -3);
|
||||
lua_settable(state, -3);
|
||||
break;
|
||||
|
||||
case LUA_TFUNCTION:
|
||||
lua_insert(state, -4);
|
||||
lua_call(state, 3, 0);
|
||||
break;
|
||||
}
|
||||
|
||||
return 0;
|
||||
}
|
||||
|
||||
// See function::bind
|
||||
int bind_call_impl(lua_State *state) {
|
||||
int nargs = lua_gettop(state);
|
||||
int nbinds = lua_tointeger(state, lua_upvalueindex(2));
|
||||
luaL_checkstack(state, nbinds + 2, NULL);
|
||||
|
||||
lua_settop(state, nargs + nbinds + 1);
|
||||
lua_rotate(state, -(nargs + nbinds + 1), nbinds + 1);
|
||||
|
||||
lua_pushvalue(state, lua_upvalueindex(1));
|
||||
lua_replace(state, 1);
|
||||
|
||||
for (int i = 0; i < nbinds; i++) {
|
||||
lua_pushvalue(state, lua_upvalueindex(i + 3));
|
||||
lua_replace(state, i + 2);
|
||||
}
|
||||
|
||||
lua_call(state, nargs + nbinds, LUA_MULTRET);
|
||||
return lua_gettop(state);
|
||||
}
|
||||
|
||||
// Returns 1 if a value at index `index` is a special wrapped struct identified
|
||||
// by `key`
|
||||
int is_wrapped_struct(lua_State *state, int index, const void *key) {
|
||||
if (key == NULL) {
|
||||
// Not yet initialized?
|
||||
return 0;
|
||||
}
|
||||
|
||||
void *ud = lua_touserdata(state, index);
|
||||
if (ud == NULL || lua_getmetatable(state, index) == 0) {
|
||||
return 0;
|
||||
}
|
||||
lua_rawgetp(state, LUA_REGISTRYINDEX, key);
|
||||
int res = lua_rawequal(state, -1, -2);
|
||||
lua_pop(state, 2);
|
||||
return res;
|
||||
}
|
||||
|
||||
// Takes an error at the top of the stack, and if it is a WrappedError, converts
|
||||
// it to an Error::CallbackError with a traceback, if it is some lua type,
|
||||
// prints the error along with a traceback, and if it is a WrappedPanic, does
|
||||
// not modify it. This function does its best to avoid triggering another error
|
||||
// and shadowing previous rust errors, but it may trigger Lua errors that shadow
|
||||
// rust errors under certain memory conditions. This function ensures that such
|
||||
// behavior will *never* occur with a rust panic, however.
|
||||
int error_traceback(lua_State *state) {
|
||||
// I believe luaL_traceback < 5.4 requires this much free stack to not error.
|
||||
// 5.4 uses luaL_Buffer
|
||||
const int LUA_TRACEBACK_STACK = 11;
|
||||
|
||||
if (lua_checkstack(state, 2) == 0) {
|
||||
// If we don't have enough stack space to even check the error type, do
|
||||
// nothing so we don't risk shadowing a rust panic.
|
||||
return 1;
|
||||
}
|
||||
|
||||
if (is_wrapped_struct(state, -1, MLUA_WRAPPED_ERROR_KEY) != 0) {
|
||||
int error_idx = lua_absindex(state, -1);
|
||||
// lua_newuserdata and luaL_traceback may error
|
||||
void *error_ud = lua_newuserdata(state, MLUA_WRAPPED_ERROR_SIZE);
|
||||
int has_traceback = 0;
|
||||
if (lua_checkstack(state, LUA_TRACEBACK_STACK) != 0) {
|
||||
luaL_traceback(state, state, NULL, 0);
|
||||
has_traceback = 1;
|
||||
}
|
||||
wrapped_error_traceback(state, error_idx, error_ud, has_traceback);
|
||||
return 1;
|
||||
}
|
||||
|
||||
if (MLUA_WRAPPED_PANIC_KEY != NULL &&
|
||||
!is_wrapped_struct(state, -1, MLUA_WRAPPED_PANIC_KEY) &&
|
||||
lua_checkstack(state, LUA_TRACEBACK_STACK) != 0) {
|
||||
const char *s = luaL_tolstring(state, -1, NULL);
|
||||
luaL_traceback(state, state, s, 0);
|
||||
lua_remove(state, -2);
|
||||
}
|
||||
|
||||
return 1;
|
||||
}
|
||||
|
||||
int error_traceback_s(lua_State *L) {
|
||||
lua_State *L1 = lua_touserdata(L, -1);
|
||||
lua_pop(L, 1);
|
||||
return error_traceback(L1);
|
||||
}
|
||||
|
|
@ -1,12 +1,10 @@
|
|||
use std::os::raw::{c_int, c_void};
|
||||
use std::{ptr, slice};
|
||||
use std::slice;
|
||||
|
||||
use crate::error::{Error, Result};
|
||||
use crate::ffi;
|
||||
use crate::types::LuaRef;
|
||||
use crate::util::{
|
||||
assert_stack, check_stack, error_traceback, pop_error, protect_lua_closure, StackGuard,
|
||||
};
|
||||
use crate::util::{assert_stack, check_stack, pop_error, StackGuard};
|
||||
use crate::value::{FromLuaMulti, MultiValue, ToLuaMulti};
|
||||
|
||||
#[cfg(feature = "async")]
|
||||
|
|
@ -67,7 +65,7 @@ impl<'lua> Function<'lua> {
|
|||
let _sg = StackGuard::new(lua.state);
|
||||
check_stack(lua.state, nargs + 3)?;
|
||||
|
||||
ffi::lua_pushcfunction(lua.state, error_traceback);
|
||||
ffi::lua_pushcfunction(lua.state, ffi::safe::error_traceback);
|
||||
let stack_start = ffi::lua_gettop(lua.state);
|
||||
lua.push_ref(&self.0);
|
||||
for arg in args {
|
||||
|
|
@ -161,26 +159,6 @@ impl<'lua> Function<'lua> {
|
|||
/// # }
|
||||
/// ```
|
||||
pub fn bind<A: ToLuaMulti<'lua>>(&self, args: A) -> Result<Function<'lua>> {
|
||||
unsafe extern "C" fn bind_call_impl(state: *mut ffi::lua_State) -> c_int {
|
||||
let nargs = ffi::lua_gettop(state);
|
||||
let nbinds = ffi::lua_tointeger(state, ffi::lua_upvalueindex(2)) as c_int;
|
||||
ffi::luaL_checkstack(state, nbinds + 2, ptr::null());
|
||||
|
||||
ffi::lua_settop(state, nargs + nbinds + 1);
|
||||
ffi::lua_rotate(state, -(nargs + nbinds + 1), nbinds + 1);
|
||||
|
||||
ffi::lua_pushvalue(state, ffi::lua_upvalueindex(1));
|
||||
ffi::lua_replace(state, 1);
|
||||
|
||||
for i in 0..nbinds {
|
||||
ffi::lua_pushvalue(state, ffi::lua_upvalueindex(i + 3));
|
||||
ffi::lua_replace(state, i + 2);
|
||||
}
|
||||
|
||||
ffi::lua_call(state, nargs + nbinds, ffi::LUA_MULTRET);
|
||||
ffi::lua_gettop(state)
|
||||
}
|
||||
|
||||
let lua = self.0.lua;
|
||||
|
||||
let args = args.to_lua_multi(lua)?;
|
||||
|
|
@ -193,15 +171,13 @@ impl<'lua> Function<'lua> {
|
|||
unsafe {
|
||||
let _sg = StackGuard::new(lua.state);
|
||||
check_stack(lua.state, nargs + 5)?;
|
||||
|
||||
lua.push_ref(&self.0);
|
||||
ffi::lua_pushinteger(lua.state, nargs as ffi::lua_Integer);
|
||||
for arg in args {
|
||||
lua.push_value(arg)?;
|
||||
}
|
||||
|
||||
protect_lua_closure(lua.state, nargs + 2, 1, |state| {
|
||||
ffi::lua_pushcclosure(state, bind_call_impl, nargs + 2);
|
||||
})?;
|
||||
ffi::safe::lua_pushcclosure(lua.state, ffi::safe::bind_call_impl, nargs + 2)?;
|
||||
|
||||
Ok(Function(lua.pop_ref()))
|
||||
}
|
||||
|
|
@ -229,6 +205,7 @@ impl<'lua> Function<'lua> {
|
|||
unsafe {
|
||||
let _sg = StackGuard::new(lua.state);
|
||||
assert_stack(lua.state, 1);
|
||||
|
||||
lua.push_ref(&self.0);
|
||||
let strip = if strip { 1 } else { 0 };
|
||||
ffi::lua_dump(
|
||||
|
|
|
|||
|
|
@ -165,7 +165,8 @@ impl HookTriggers {
|
|||
}
|
||||
}
|
||||
|
||||
pub(crate) unsafe extern "C" fn hook_proc(state: *mut lua_State, ar: *mut lua_Debug) {
|
||||
#[no_mangle]
|
||||
pub unsafe extern "C" fn mlua_hook_proc(state: *mut lua_State, ar: *mut lua_Debug) -> c_int {
|
||||
callback_error(state, |_| {
|
||||
let debug = Debug {
|
||||
ar,
|
||||
|
|
@ -182,8 +183,8 @@ pub(crate) unsafe extern "C" fn hook_proc(state: *mut lua_State, ar: *mut lua_De
|
|||
Err(_) => mlua_panic!("Lua should not allow hooks to be called within another hook"),
|
||||
}?;
|
||||
|
||||
Ok(())
|
||||
});
|
||||
Ok(0)
|
||||
})
|
||||
}
|
||||
|
||||
unsafe fn ptr_to_str<'a>(input: *const c_char) -> Option<&'a [u8]> {
|
||||
|
|
|
|||
322
src/lua.rs
322
src/lua.rs
|
|
@ -11,7 +11,7 @@ use std::{mem, ptr, str};
|
|||
use crate::error::{Error, Result};
|
||||
use crate::ffi;
|
||||
use crate::function::Function;
|
||||
use crate::hook::{hook_proc, Debug, HookTriggers};
|
||||
use crate::hook::{Debug, HookTriggers};
|
||||
use crate::scope::Scope;
|
||||
use crate::stdlib::StdLib;
|
||||
use crate::string::String;
|
||||
|
|
@ -27,8 +27,8 @@ use crate::userdata::{
|
|||
use crate::util::{
|
||||
assert_stack, callback_error, check_stack, get_gc_userdata, get_main_state, get_userdata,
|
||||
get_wrapped_error, init_error_registry, init_gc_metatable_for, init_userdata_metatable,
|
||||
pop_error, protect_lua, protect_lua_closure, push_gc_userdata, push_meta_gc_userdata,
|
||||
push_string, push_userdata, push_wrapped_error, StackGuard, WrappedPanic,
|
||||
pop_error, push_gc_userdata, push_userdata, push_wrapped_error, StackGuard, WrappedError,
|
||||
WrappedPanic,
|
||||
};
|
||||
use crate::value::{FromLua, FromLuaMulti, MultiValue, Nil, ToLua, ToLuaMulti, Value};
|
||||
|
||||
|
|
@ -119,7 +119,7 @@ impl Drop for Lua {
|
|||
let mut unref_list =
|
||||
mlua_expect!(extra.registry_unref_list.lock(), "unref list poisoned");
|
||||
*unref_list = None;
|
||||
ffi::lua_close(self.main_state.expect("main_state is null"));
|
||||
ffi::lua_close(mlua_expect!(self.main_state, "main_state is null"));
|
||||
if !extra.mem_info.is_null() {
|
||||
Box::from_raw(extra.mem_info);
|
||||
}
|
||||
|
|
@ -261,7 +261,10 @@ impl Lua {
|
|||
#[cfg(any(feature = "lua51", feature = "luajit"))]
|
||||
let state = ffi::luaL_newstate();
|
||||
|
||||
ffi::luaL_requiref(state, cstr!("_G"), ffi::luaopen_base, 1);
|
||||
mlua_expect!(
|
||||
ffi::safe::luaL_requiref(state, "_G", ffi::luaopen_base, 1),
|
||||
"Error during loading base lib"
|
||||
);
|
||||
ffi::lua_pop(state, 1);
|
||||
|
||||
let mut lua = Lua::init_from_ptr(state);
|
||||
|
|
@ -272,9 +275,7 @@ impl Lua {
|
|||
}
|
||||
|
||||
mlua_expect!(
|
||||
protect_lua_closure(lua.main_state.expect("main_state is null"), 0, 0, |state| {
|
||||
load_from_std_lib(state, libs);
|
||||
}),
|
||||
load_from_std_lib(state, libs),
|
||||
"Error during loading standard libraries"
|
||||
);
|
||||
mlua_expect!(lua.extra.lock(), "extra is poisoned").libs |= libs;
|
||||
|
|
@ -289,35 +290,36 @@ impl Lua {
|
|||
let main_state = maybe_main_state.unwrap_or(state);
|
||||
let main_state_top = ffi::lua_gettop(main_state);
|
||||
|
||||
let ref_thread = mlua_expect!(
|
||||
protect_lua_closure(main_state, 0, 0, |state| {
|
||||
init_error_registry(state);
|
||||
let (ref_thread, wrapped_error_key, wrapped_panic_key) = mlua_expect!(
|
||||
(|state| {
|
||||
let (wrapped_error_key, wrapped_panic_key) = init_error_registry(state)?;
|
||||
|
||||
// Create the internal metatables and place them in the registry
|
||||
// to prevent them from being garbage collected.
|
||||
|
||||
init_gc_metatable_for::<Callback>(state, None);
|
||||
init_gc_metatable_for::<Lua>(state, None);
|
||||
init_gc_metatable_for::<Weak<Mutex<ExtraData>>>(state, None);
|
||||
init_gc_metatable_for::<Callback>(state, None)?;
|
||||
init_gc_metatable_for::<Lua>(state, None)?;
|
||||
init_gc_metatable_for::<Weak<Mutex<ExtraData>>>(state, None)?;
|
||||
#[cfg(feature = "async")]
|
||||
{
|
||||
init_gc_metatable_for::<AsyncCallback>(state, None);
|
||||
init_gc_metatable_for::<LocalBoxFuture<Result<MultiValue>>>(state, None);
|
||||
init_gc_metatable_for::<AsyncPollPending>(state, None);
|
||||
init_gc_metatable_for::<Waker>(state, None);
|
||||
init_gc_metatable_for::<AsyncCallback>(state, None)?;
|
||||
init_gc_metatable_for::<LocalBoxFuture<Result<MultiValue>>>(state, None)?;
|
||||
init_gc_metatable_for::<AsyncPollPending>(state, None)?;
|
||||
init_gc_metatable_for::<Waker>(state, None)?;
|
||||
}
|
||||
|
||||
// Init serde metatables
|
||||
#[cfg(feature = "serialize")]
|
||||
crate::serde::init_metatables(state);
|
||||
crate::serde::init_metatables(state)?;
|
||||
|
||||
// Create ref stack thread and place it in the registry to prevent it from being garbage
|
||||
// collected.
|
||||
|
||||
let _ref_thread = ffi::lua_newthread(state);
|
||||
ffi::luaL_ref(state, ffi::LUA_REGISTRYINDEX);
|
||||
_ref_thread
|
||||
}),
|
||||
let ref_thread = ffi::safe::lua_newthread(state)?;
|
||||
ffi::safe::luaL_ref(state, ffi::LUA_REGISTRYINDEX)?;
|
||||
|
||||
Ok::<_, Error>((ref_thread, wrapped_error_key, wrapped_panic_key))
|
||||
})(main_state),
|
||||
"Error during Lua construction",
|
||||
);
|
||||
|
||||
|
|
@ -342,13 +344,11 @@ impl Lua {
|
|||
"Error while storing extra data",
|
||||
);
|
||||
mlua_expect!(
|
||||
protect_lua_closure(main_state, 1, 0, |state| {
|
||||
ffi::lua_rawsetp(
|
||||
state,
|
||||
ffi::LUA_REGISTRYINDEX,
|
||||
&EXTRA_REGISTRY_KEY as *const u8 as *mut c_void,
|
||||
);
|
||||
}),
|
||||
ffi::safe::lua_rawsetp(
|
||||
main_state,
|
||||
ffi::LUA_REGISTRYINDEX,
|
||||
&EXTRA_REGISTRY_KEY as *const u8 as *const c_void
|
||||
),
|
||||
"Error while storing extra data"
|
||||
);
|
||||
|
||||
|
|
@ -358,6 +358,11 @@ impl Lua {
|
|||
);
|
||||
assert_stack(main_state, ffi::LUA_MINSTACK);
|
||||
|
||||
ffi::safe::WRAPPED_ERROR_SIZE = mem::size_of::<WrappedError>();
|
||||
ffi::safe::WRAPPED_PANIC_SIZE = mem::size_of::<WrappedPanic>();
|
||||
ffi::safe::WRAPPED_ERROR_KEY = wrapped_error_key as *const c_void;
|
||||
ffi::safe::WRAPPED_PANIC_KEY = wrapped_panic_key as *const c_void;
|
||||
|
||||
Lua {
|
||||
state,
|
||||
main_state: maybe_main_state,
|
||||
|
|
@ -389,11 +394,7 @@ impl Lua {
|
|||
}
|
||||
|
||||
let state = self.main_state.unwrap_or(self.state);
|
||||
let res = unsafe {
|
||||
protect_lua_closure(state, 0, 0, |state| {
|
||||
load_from_std_lib(state, libs);
|
||||
})
|
||||
};
|
||||
let res = unsafe { load_from_std_lib(state, libs) };
|
||||
|
||||
// If `package` library loaded into a safe lua state then disable C modules
|
||||
let curr_libs = mlua_expect!(self.extra.lock(), "extra is poisoned").libs;
|
||||
|
|
@ -485,7 +486,12 @@ impl Lua {
|
|||
unsafe {
|
||||
let mut extra = mlua_expect!(self.extra.lock(), "extra is poisoned");
|
||||
extra.hook_callback = Some(Arc::new(RefCell::new(callback)));
|
||||
ffi::lua_sethook(state, Some(hook_proc), triggers.mask(), triggers.count());
|
||||
ffi::lua_sethook(
|
||||
state,
|
||||
Some(ffi::safe::lua_call_mlua_hook_proc),
|
||||
triggers.mask(),
|
||||
triggers.count(),
|
||||
);
|
||||
}
|
||||
Ok(())
|
||||
}
|
||||
|
|
@ -569,11 +575,7 @@ impl Lua {
|
|||
/// objects. Once to finish the current gc cycle, and once to start and finish the next cycle.
|
||||
pub fn gc_collect(&self) -> Result<()> {
|
||||
let state = self.main_state.unwrap_or(self.state);
|
||||
unsafe {
|
||||
protect_lua_closure(state, 0, 0, |state| {
|
||||
ffi::lua_gc(state, ffi::LUA_GCCOLLECT, 0);
|
||||
})
|
||||
}
|
||||
unsafe { ffi::safe::lua_gc(state, ffi::LUA_GCCOLLECT, 0).map(|_| ()) }
|
||||
}
|
||||
|
||||
/// Steps the garbage collector one indivisible step.
|
||||
|
|
@ -589,11 +591,7 @@ impl Lua {
|
|||
/// finished a collection cycle.
|
||||
pub fn gc_step_kbytes(&self, kbytes: c_int) -> Result<bool> {
|
||||
let state = self.main_state.unwrap_or(self.state);
|
||||
unsafe {
|
||||
protect_lua_closure(state, 0, 0, |state| {
|
||||
ffi::lua_gc(state, ffi::LUA_GCSTEP, kbytes) != 0
|
||||
})
|
||||
}
|
||||
unsafe { Ok(ffi::safe::lua_gc(state, ffi::LUA_GCSTEP, kbytes)? != 0) }
|
||||
}
|
||||
|
||||
/// Sets the 'pause' value of the collector.
|
||||
|
|
@ -764,23 +762,14 @@ impl Lua {
|
|||
unsafe {
|
||||
let _sg = StackGuard::new(self.state);
|
||||
assert_stack(self.state, 4);
|
||||
push_string(self.state, s)?;
|
||||
ffi::safe::lua_pushstring(self.state, s)?;
|
||||
Ok(String(self.pop_ref()))
|
||||
}
|
||||
}
|
||||
|
||||
/// Creates and returns a new empty table.
|
||||
pub fn create_table(&self) -> Result<Table> {
|
||||
unsafe {
|
||||
let _sg = StackGuard::new(self.state);
|
||||
assert_stack(self.state, 3);
|
||||
unsafe extern "C" fn new_table(state: *mut ffi::lua_State) -> c_int {
|
||||
ffi::lua_newtable(state);
|
||||
1
|
||||
}
|
||||
protect_lua(self.state, 0, new_table)?;
|
||||
Ok(Table(self.pop_ref()))
|
||||
}
|
||||
self.create_table_with_capacity(0, 0)
|
||||
}
|
||||
|
||||
/// Creates and returns a new empty table, with the specified capacity.
|
||||
|
|
@ -791,9 +780,7 @@ impl Lua {
|
|||
unsafe {
|
||||
let _sg = StackGuard::new(self.state);
|
||||
assert_stack(self.state, 4);
|
||||
protect_lua_closure(self.state, 0, 1, |state| {
|
||||
ffi::lua_createtable(state, narr, nrec)
|
||||
})?;
|
||||
ffi::safe::lua_createtable(self.state, narr, nrec)?;
|
||||
Ok(Table(self.pop_ref()))
|
||||
}
|
||||
}
|
||||
|
|
@ -811,21 +798,13 @@ impl Lua {
|
|||
// slots available to avoid panics.
|
||||
check_stack(self.state, 5 + ffi::LUA_MINSTACK)?;
|
||||
|
||||
unsafe extern "C" fn new_table(state: *mut ffi::lua_State) -> c_int {
|
||||
ffi::lua_newtable(state);
|
||||
1
|
||||
}
|
||||
protect_lua(self.state, 0, new_table)?;
|
||||
|
||||
ffi::safe::lua_createtable(self.state, 0, 0)?;
|
||||
for (k, v) in cont {
|
||||
self.push_value(k.to_lua(self)?)?;
|
||||
self.push_value(v.to_lua(self)?)?;
|
||||
unsafe extern "C" fn raw_set(state: *mut ffi::lua_State) -> c_int {
|
||||
ffi::lua_rawset(state, -3);
|
||||
1
|
||||
}
|
||||
protect_lua(self.state, 3, raw_set)?;
|
||||
ffi::safe::lua_rawset(self.state, -3)?;
|
||||
}
|
||||
|
||||
Ok(Table(self.pop_ref()))
|
||||
}
|
||||
}
|
||||
|
|
@ -990,8 +969,7 @@ impl Lua {
|
|||
let _sg = StackGuard::new(self.state);
|
||||
assert_stack(self.state, 2);
|
||||
|
||||
let thread_state =
|
||||
protect_lua_closure(self.state, 0, 1, |state| ffi::lua_newthread(state))?;
|
||||
let thread_state = ffi::safe::lua_newthread(self.state)?;
|
||||
self.push_ref(&func.0);
|
||||
ffi::lua_xmove(self.state, thread_state, 1);
|
||||
|
||||
|
|
@ -1104,10 +1082,7 @@ impl Lua {
|
|||
assert_stack(self.state, 4);
|
||||
|
||||
self.push_value(v)?;
|
||||
let ok = protect_lua_closure(self.state, 1, 1, |state| {
|
||||
!ffi::lua_tostring(state, -1).is_null()
|
||||
})?;
|
||||
if ok {
|
||||
if !ffi::safe::lua_tolstring(self.state, -1, ptr::null_mut())?.is_null() {
|
||||
Some(String(self.pop_ref()))
|
||||
} else {
|
||||
None
|
||||
|
|
@ -1202,14 +1177,8 @@ impl Lua {
|
|||
let _sg = StackGuard::new(self.state);
|
||||
assert_stack(self.state, 5);
|
||||
|
||||
push_string(self.state, name)?;
|
||||
self.push_value(t)?;
|
||||
|
||||
unsafe extern "C" fn set_registry(state: *mut ffi::lua_State) -> c_int {
|
||||
ffi::lua_rawset(state, ffi::LUA_REGISTRYINDEX);
|
||||
0
|
||||
}
|
||||
protect_lua(self.state, 2, set_registry)
|
||||
ffi::safe::lua_rawsetfield(self.state, ffi::LUA_REGISTRYINDEX, name)
|
||||
}
|
||||
}
|
||||
|
||||
|
|
@ -1228,12 +1197,8 @@ impl Lua {
|
|||
let _sg = StackGuard::new(self.state);
|
||||
assert_stack(self.state, 4);
|
||||
|
||||
push_string(self.state, name)?;
|
||||
unsafe extern "C" fn get_registry(state: *mut ffi::lua_State) -> c_int {
|
||||
ffi::lua_rawget(state, ffi::LUA_REGISTRYINDEX);
|
||||
1
|
||||
}
|
||||
protect_lua(self.state, 1, get_registry)?;
|
||||
ffi::safe::lua_pushstring(self.state, name)?;
|
||||
ffi::lua_rawget(self.state, ffi::LUA_REGISTRYINDEX);
|
||||
|
||||
self.pop_value()
|
||||
};
|
||||
|
|
@ -1268,9 +1233,7 @@ impl Lua {
|
|||
assert_stack(self.state, 2);
|
||||
|
||||
self.push_value(t)?;
|
||||
let registry_id = protect_lua_closure(self.state, 1, 0, |state| {
|
||||
ffi::luaL_ref(state, ffi::LUA_REGISTRYINDEX)
|
||||
})?;
|
||||
let registry_id = ffi::safe::luaL_ref(self.state, ffi::LUA_REGISTRYINDEX)?;
|
||||
|
||||
let extra = mlua_expect!(self.extra.lock(), "extra is poisoned");
|
||||
|
||||
|
|
@ -1299,7 +1262,7 @@ impl Lua {
|
|||
ffi::lua_rawgeti(
|
||||
self.state,
|
||||
ffi::LUA_REGISTRYINDEX,
|
||||
key.registry_id as ffi::lua_Integer,
|
||||
key.registry_id as Integer,
|
||||
);
|
||||
self.pop_value()
|
||||
};
|
||||
|
|
@ -1533,60 +1496,39 @@ impl Lua {
|
|||
T::add_methods(&mut methods);
|
||||
|
||||
// Prepare metatable, add meta methods first and then meta fields
|
||||
protect_lua_closure(self.state, 0, 1, |state| {
|
||||
ffi::lua_newtable(state);
|
||||
})?;
|
||||
let metatable_nrec = methods.meta_methods.len() + fields.meta_fields.len();
|
||||
ffi::safe::lua_createtable(self.state, 0, metatable_nrec as c_int)?;
|
||||
for (k, m) in methods.meta_methods {
|
||||
push_string(self.state, k.validate()?.name())?;
|
||||
self.push_value(Value::Function(self.create_callback(m)?))?;
|
||||
|
||||
protect_lua_closure(self.state, 3, 1, |state| {
|
||||
ffi::lua_rawset(state, -3);
|
||||
})?;
|
||||
ffi::safe::lua_rawsetfield(self.state, -2, k.validate()?.name())?;
|
||||
}
|
||||
for (k, f) in fields.meta_fields {
|
||||
push_string(self.state, k.validate()?.name())?;
|
||||
self.push_value(f(self)?)?;
|
||||
|
||||
protect_lua_closure(self.state, 3, 1, |state| {
|
||||
ffi::lua_rawset(state, -3);
|
||||
})?;
|
||||
ffi::safe::lua_rawsetfield(self.state, -2, k.validate()?.name())?;
|
||||
}
|
||||
let metatable_index = ffi::lua_absindex(self.state, -1);
|
||||
|
||||
let mut extra_tables_count = 0;
|
||||
|
||||
let mut field_getters_index = None;
|
||||
let has_field_getters = !fields.field_getters.is_empty();
|
||||
if has_field_getters {
|
||||
protect_lua_closure(self.state, 0, 1, |state| {
|
||||
ffi::lua_newtable(state);
|
||||
})?;
|
||||
let field_getters_nrec = fields.field_getters.len();
|
||||
if field_getters_nrec > 0 {
|
||||
ffi::safe::lua_createtable(self.state, 0, field_getters_nrec as c_int)?;
|
||||
for (k, m) in fields.field_getters {
|
||||
push_string(self.state, &k)?;
|
||||
self.push_value(Value::Function(self.create_callback(m)?))?;
|
||||
|
||||
protect_lua_closure(self.state, 3, 1, |state| {
|
||||
ffi::lua_rawset(state, -3);
|
||||
})?;
|
||||
ffi::safe::lua_rawsetfield(self.state, -2, &k)?;
|
||||
}
|
||||
field_getters_index = Some(ffi::lua_absindex(self.state, -1));
|
||||
extra_tables_count += 1;
|
||||
}
|
||||
|
||||
let mut field_setters_index = None;
|
||||
let has_field_setters = !fields.field_setters.is_empty();
|
||||
if has_field_setters {
|
||||
protect_lua_closure(self.state, 0, 1, |state| {
|
||||
ffi::lua_newtable(state);
|
||||
})?;
|
||||
let field_setters_nrec = fields.field_setters.len();
|
||||
if field_setters_nrec > 0 {
|
||||
ffi::safe::lua_createtable(self.state, 0, field_setters_nrec as c_int)?;
|
||||
for (k, m) in fields.field_setters {
|
||||
push_string(self.state, &k)?;
|
||||
self.push_value(Value::Function(self.create_callback(m)?))?;
|
||||
|
||||
protect_lua_closure(self.state, 3, 1, |state| {
|
||||
ffi::lua_rawset(state, -3);
|
||||
})?;
|
||||
ffi::safe::lua_rawsetfield(self.state, -2, &k)?;
|
||||
}
|
||||
field_setters_index = Some(ffi::lua_absindex(self.state, -1));
|
||||
extra_tables_count += 1;
|
||||
|
|
@ -1594,29 +1536,19 @@ impl Lua {
|
|||
|
||||
let mut methods_index = None;
|
||||
#[cfg(feature = "async")]
|
||||
let has_methods = !methods.methods.is_empty() || !methods.async_methods.is_empty();
|
||||
let methods_nrec = methods.methods.len() + methods.async_methods.len();
|
||||
#[cfg(not(feature = "async"))]
|
||||
let has_methods = !methods.methods.is_empty();
|
||||
if has_methods {
|
||||
protect_lua_closure(self.state, 0, 1, |state| {
|
||||
ffi::lua_newtable(state);
|
||||
})?;
|
||||
let methods_nrec = methods.methods.len();
|
||||
if methods_nrec > 0 {
|
||||
ffi::safe::lua_createtable(self.state, 0, methods_nrec as c_int)?;
|
||||
for (k, m) in methods.methods {
|
||||
push_string(self.state, &k)?;
|
||||
self.push_value(Value::Function(self.create_callback(m)?))?;
|
||||
|
||||
protect_lua_closure(self.state, 3, 1, |state| {
|
||||
ffi::lua_rawset(state, -3);
|
||||
})?;
|
||||
ffi::safe::lua_rawsetfield(self.state, -2, &k)?;
|
||||
}
|
||||
#[cfg(feature = "async")]
|
||||
for (k, m) in methods.async_methods {
|
||||
push_string(self.state, &k)?;
|
||||
self.push_value(Value::Function(self.create_async_callback(m)?))?;
|
||||
|
||||
protect_lua_closure(self.state, 3, 1, |state| {
|
||||
ffi::lua_rawset(state, -3);
|
||||
})?;
|
||||
ffi::safe::lua_rawsetfield(self.state, -2, &k)?;
|
||||
}
|
||||
methods_index = Some(ffi::lua_absindex(self.state, -1));
|
||||
extra_tables_count += 1;
|
||||
|
|
@ -1634,9 +1566,7 @@ impl Lua {
|
|||
ffi::lua_pop(self.state, extra_tables_count);
|
||||
|
||||
let ptr = ffi::lua_topointer(self.state, -1);
|
||||
let id = protect_lua_closure(self.state, 1, 0, |state| {
|
||||
ffi::luaL_ref(state, ffi::LUA_REGISTRYINDEX)
|
||||
})?;
|
||||
let id = ffi::safe::luaL_ref(self.state, ffi::LUA_REGISTRYINDEX)?;
|
||||
|
||||
let mut extra = mlua_expect!(self.extra.lock(), "extra is poisoned");
|
||||
extra.registered_userdata.insert(type_id, id);
|
||||
|
|
@ -1657,7 +1587,7 @@ impl Lua {
|
|||
|
||||
// Pushes a LuaRef value onto the stack, checking that it's a registered
|
||||
// and not destructed UserData.
|
||||
// Uses 2 stack spaces, does not call checkstack
|
||||
// Uses 3 stack spaces, does not call checkstack
|
||||
#[cfg(feature = "serialize")]
|
||||
pub(crate) unsafe fn push_userdata_ref(&self, lref: &LuaRef) -> Result<()> {
|
||||
self.push_ref(lref);
|
||||
|
|
@ -1698,13 +1628,15 @@ impl Lua {
|
|||
{
|
||||
unsafe extern "C" fn call_callback(state: *mut ffi::lua_State) -> c_int {
|
||||
callback_error(state, |nargs| {
|
||||
if ffi::lua_type(state, ffi::lua_upvalueindex(1)) == ffi::LUA_TNIL
|
||||
|| ffi::lua_type(state, ffi::lua_upvalueindex(2)) == ffi::LUA_TNIL
|
||||
let upvalue_idx1 = ffi::lua_upvalueindex(2);
|
||||
let upvalue_idx2 = ffi::lua_upvalueindex(3);
|
||||
if ffi::lua_type(state, upvalue_idx1) == ffi::LUA_TNIL
|
||||
|| ffi::lua_type(state, upvalue_idx2) == ffi::LUA_TNIL
|
||||
{
|
||||
return Err(Error::CallbackDestructed);
|
||||
}
|
||||
let func = get_userdata::<Callback>(state, ffi::lua_upvalueindex(1));
|
||||
let lua = get_userdata::<Lua>(state, ffi::lua_upvalueindex(2));
|
||||
let func = get_userdata::<Callback>(state, upvalue_idx1);
|
||||
let lua = get_userdata::<Lua>(state, upvalue_idx2);
|
||||
|
||||
if nargs < ffi::LUA_MINSTACK {
|
||||
check_stack(state, ffi::LUA_MINSTACK - nargs)?;
|
||||
|
|
@ -1735,12 +1667,9 @@ impl Lua {
|
|||
let _sg = StackGuard::new(self.state);
|
||||
assert_stack(self.state, 6);
|
||||
|
||||
push_meta_gc_userdata::<Callback, _>(self.state, func)?;
|
||||
push_gc_userdata::<Callback>(self.state, mem::transmute(func))?;
|
||||
push_gc_userdata(self.state, self.clone())?;
|
||||
|
||||
protect_lua_closure(self.state, 2, 1, |state| {
|
||||
ffi::lua_pushcclosure(state, call_callback, 2);
|
||||
})?;
|
||||
ffi::safe::lua_pushrclosure(self.state, call_callback, 2)?;
|
||||
|
||||
Ok(Function(self.pop_ref()))
|
||||
}
|
||||
|
|
@ -1764,13 +1693,15 @@ impl Lua {
|
|||
|
||||
unsafe extern "C" fn call_callback(state: *mut ffi::lua_State) -> c_int {
|
||||
callback_error(state, |nargs| {
|
||||
if ffi::lua_type(state, ffi::lua_upvalueindex(1)) == ffi::LUA_TNIL
|
||||
|| ffi::lua_type(state, ffi::lua_upvalueindex(2)) == ffi::LUA_TNIL
|
||||
let upvalue_idx1 = ffi::lua_upvalueindex(2);
|
||||
let upvalue_idx2 = ffi::lua_upvalueindex(3);
|
||||
if ffi::lua_type(state, upvalue_idx1) == ffi::LUA_TNIL
|
||||
|| ffi::lua_type(state, upvalue_idx2) == ffi::LUA_TNIL
|
||||
{
|
||||
return Err(Error::CallbackDestructed);
|
||||
}
|
||||
let func = get_userdata::<AsyncCallback>(state, ffi::lua_upvalueindex(1));
|
||||
let lua = get_userdata::<Lua>(state, ffi::lua_upvalueindex(2));
|
||||
let func = get_userdata::<AsyncCallback>(state, upvalue_idx1);
|
||||
let lua = get_userdata::<Lua>(state, upvalue_idx2);
|
||||
|
||||
if nargs < ffi::LUA_MINSTACK {
|
||||
check_stack(state, ffi::LUA_MINSTACK - nargs)?;
|
||||
|
|
@ -1789,7 +1720,7 @@ impl Lua {
|
|||
push_gc_userdata(state, fut)?;
|
||||
push_gc_userdata(state, lua.clone())?;
|
||||
|
||||
ffi::lua_pushcclosure(state, poll_future, 2);
|
||||
ffi::safe::lua_pushrclosure(state, poll_future, 2)?;
|
||||
|
||||
Ok(1)
|
||||
})
|
||||
|
|
@ -1797,16 +1728,15 @@ impl Lua {
|
|||
|
||||
unsafe extern "C" fn poll_future(state: *mut ffi::lua_State) -> c_int {
|
||||
callback_error(state, |nargs| {
|
||||
if ffi::lua_type(state, ffi::lua_upvalueindex(1)) == ffi::LUA_TNIL
|
||||
|| ffi::lua_type(state, ffi::lua_upvalueindex(2)) == ffi::LUA_TNIL
|
||||
let upvalue_idx1 = ffi::lua_upvalueindex(2);
|
||||
let upvalue_idx2 = ffi::lua_upvalueindex(3);
|
||||
if ffi::lua_type(state, upvalue_idx1) == ffi::LUA_TNIL
|
||||
|| ffi::lua_type(state, upvalue_idx2) == ffi::LUA_TNIL
|
||||
{
|
||||
return Err(Error::CallbackDestructed);
|
||||
}
|
||||
let fut = get_userdata::<LocalBoxFuture<Result<MultiValue>>>(
|
||||
state,
|
||||
ffi::lua_upvalueindex(1),
|
||||
);
|
||||
let lua = get_userdata::<Lua>(state, ffi::lua_upvalueindex(2));
|
||||
let fut = get_userdata::<LocalBoxFuture<Result<MultiValue>>>(state, upvalue_idx1);
|
||||
let lua = get_userdata::<Lua>(state, upvalue_idx2);
|
||||
|
||||
if nargs < ffi::LUA_MINSTACK {
|
||||
check_stack(state, ffi::LUA_MINSTACK - nargs)?;
|
||||
|
|
@ -1849,12 +1779,9 @@ impl Lua {
|
|||
let _sg = StackGuard::new(self.state);
|
||||
assert_stack(self.state, 6);
|
||||
|
||||
push_meta_gc_userdata::<AsyncCallback, _>(self.state, func)?;
|
||||
push_gc_userdata::<AsyncCallback>(self.state, mem::transmute(func))?;
|
||||
push_gc_userdata(self.state, self.clone())?;
|
||||
|
||||
protect_lua_closure(self.state, 2, 1, |state| {
|
||||
ffi::lua_pushcclosure(state, call_callback, 2);
|
||||
})?;
|
||||
ffi::safe::lua_pushrclosure(self.state, call_callback, 2)?;
|
||||
|
||||
Function(self.pop_ref())
|
||||
};
|
||||
|
|
@ -1909,11 +1836,7 @@ impl Lua {
|
|||
let ud_index = self.userdata_metatable::<T>()?;
|
||||
push_userdata::<UserDataCell<T>>(self.state, RefCell::new(data))?;
|
||||
|
||||
ffi::lua_rawgeti(
|
||||
self.state,
|
||||
ffi::LUA_REGISTRYINDEX,
|
||||
ud_index as ffi::lua_Integer,
|
||||
);
|
||||
ffi::lua_rawgeti(self.state, ffi::LUA_REGISTRYINDEX, ud_index as Integer);
|
||||
ffi::lua_setmetatable(self.state, -2);
|
||||
|
||||
Ok(AnyUserData(self.pop_ref()))
|
||||
|
|
@ -2166,7 +2089,7 @@ impl<'lua, 'a> Chunk<'lua, 'a> {
|
|||
}
|
||||
}
|
||||
|
||||
unsafe fn load_from_std_lib(state: *mut ffi::lua_State, libs: StdLib) {
|
||||
unsafe fn load_from_std_lib(state: *mut ffi::lua_State, libs: StdLib) -> Result<()> {
|
||||
#[cfg(feature = "luajit")]
|
||||
// Stop collector during library initialization
|
||||
ffi::lua_gc(state, ffi::LUA_GCSTOP, 0);
|
||||
|
|
@ -2174,41 +2097,35 @@ unsafe fn load_from_std_lib(state: *mut ffi::lua_State, libs: StdLib) {
|
|||
#[cfg(any(feature = "lua54", feature = "lua53", feature = "lua52"))]
|
||||
{
|
||||
if libs.contains(StdLib::COROUTINE) {
|
||||
let colib_name = CString::new(ffi::LUA_COLIBNAME).unwrap();
|
||||
ffi::luaL_requiref(state, colib_name.as_ptr(), ffi::luaopen_coroutine, 1);
|
||||
ffi::safe::luaL_requiref(state, ffi::LUA_COLIBNAME, ffi::luaopen_coroutine, 1)?;
|
||||
ffi::lua_pop(state, 1);
|
||||
}
|
||||
}
|
||||
|
||||
if libs.contains(StdLib::TABLE) {
|
||||
let tablib_name = CString::new(ffi::LUA_TABLIBNAME).unwrap();
|
||||
ffi::luaL_requiref(state, tablib_name.as_ptr(), ffi::luaopen_table, 1);
|
||||
ffi::safe::luaL_requiref(state, ffi::LUA_TABLIBNAME, ffi::luaopen_table, 1)?;
|
||||
ffi::lua_pop(state, 1);
|
||||
}
|
||||
|
||||
if libs.contains(StdLib::IO) {
|
||||
let iolib_name = CString::new(ffi::LUA_IOLIBNAME).unwrap();
|
||||
ffi::luaL_requiref(state, iolib_name.as_ptr(), ffi::luaopen_io, 1);
|
||||
ffi::safe::luaL_requiref(state, ffi::LUA_IOLIBNAME, ffi::luaopen_io, 1)?;
|
||||
ffi::lua_pop(state, 1);
|
||||
}
|
||||
|
||||
if libs.contains(StdLib::OS) {
|
||||
let oslib_name = CString::new(ffi::LUA_OSLIBNAME).unwrap();
|
||||
ffi::luaL_requiref(state, oslib_name.as_ptr(), ffi::luaopen_os, 1);
|
||||
ffi::safe::luaL_requiref(state, ffi::LUA_OSLIBNAME, ffi::luaopen_os, 1)?;
|
||||
ffi::lua_pop(state, 1);
|
||||
}
|
||||
|
||||
if libs.contains(StdLib::STRING) {
|
||||
let strlib_name = CString::new(ffi::LUA_STRLIBNAME).unwrap();
|
||||
ffi::luaL_requiref(state, strlib_name.as_ptr(), ffi::luaopen_string, 1);
|
||||
ffi::safe::luaL_requiref(state, ffi::LUA_STRLIBNAME, ffi::luaopen_string, 1)?;
|
||||
ffi::lua_pop(state, 1);
|
||||
}
|
||||
|
||||
#[cfg(any(feature = "lua54", feature = "lua53"))]
|
||||
{
|
||||
if libs.contains(StdLib::UTF8) {
|
||||
let utf8lib_name = CString::new(ffi::LUA_UTF8LIBNAME).unwrap();
|
||||
ffi::luaL_requiref(state, utf8lib_name.as_ptr(), ffi::luaopen_utf8, 1);
|
||||
ffi::safe::luaL_requiref(state, ffi::LUA_UTF8LIBNAME, ffi::luaopen_utf8, 1)?;
|
||||
ffi::lua_pop(state, 1);
|
||||
}
|
||||
}
|
||||
|
|
@ -2216,8 +2133,7 @@ unsafe fn load_from_std_lib(state: *mut ffi::lua_State, libs: StdLib) {
|
|||
#[cfg(feature = "lua52")]
|
||||
{
|
||||
if libs.contains(StdLib::BIT) {
|
||||
let bitlib_name = CString::new(ffi::LUA_BITLIBNAME).unwrap();
|
||||
ffi::luaL_requiref(state, bitlib_name.as_ptr(), ffi::luaopen_bit32, 1);
|
||||
ffi::safe::luaL_requiref(state, ffi::LUA_BITLIBNAME, ffi::luaopen_bit32, 1)?;
|
||||
ffi::lua_pop(state, 1);
|
||||
}
|
||||
}
|
||||
|
|
@ -2225,47 +2141,43 @@ unsafe fn load_from_std_lib(state: *mut ffi::lua_State, libs: StdLib) {
|
|||
#[cfg(feature = "luajit")]
|
||||
{
|
||||
if libs.contains(StdLib::BIT) {
|
||||
let bitlib_name = CString::new(ffi::LUA_BITLIBNAME).unwrap();
|
||||
ffi::luaL_requiref(state, bitlib_name.as_ptr(), ffi::luaopen_bit, 1);
|
||||
ffi::safe::luaL_requiref(state, ffi::LUA_BITLIBNAME, ffi::luaopen_bit, 1)?;
|
||||
ffi::lua_pop(state, 1);
|
||||
}
|
||||
}
|
||||
|
||||
if libs.contains(StdLib::MATH) {
|
||||
let mathlib_name = CString::new(ffi::LUA_MATHLIBNAME).unwrap();
|
||||
ffi::luaL_requiref(state, mathlib_name.as_ptr(), ffi::luaopen_math, 1);
|
||||
ffi::safe::luaL_requiref(state, ffi::LUA_MATHLIBNAME, ffi::luaopen_math, 1)?;
|
||||
ffi::lua_pop(state, 1);
|
||||
}
|
||||
|
||||
if libs.contains(StdLib::DEBUG) {
|
||||
let dblib_name = CString::new(ffi::LUA_DBLIBNAME).unwrap();
|
||||
ffi::luaL_requiref(state, dblib_name.as_ptr(), ffi::luaopen_debug, 1);
|
||||
ffi::safe::luaL_requiref(state, ffi::LUA_DBLIBNAME, ffi::luaopen_debug, 1)?;
|
||||
ffi::lua_pop(state, 1);
|
||||
}
|
||||
|
||||
if libs.contains(StdLib::PACKAGE) {
|
||||
let loadlib_name = CString::new(ffi::LUA_LOADLIBNAME).unwrap();
|
||||
ffi::luaL_requiref(state, loadlib_name.as_ptr(), ffi::luaopen_package, 1);
|
||||
ffi::safe::luaL_requiref(state, ffi::LUA_LOADLIBNAME, ffi::luaopen_package, 1)?;
|
||||
ffi::lua_pop(state, 1);
|
||||
}
|
||||
|
||||
#[cfg(feature = "luajit")]
|
||||
{
|
||||
if libs.contains(StdLib::JIT) {
|
||||
let jitlib_name = CString::new(ffi::LUA_JITLIBNAME).unwrap();
|
||||
ffi::luaL_requiref(state, jitlib_name.as_ptr(), ffi::luaopen_jit, 1);
|
||||
ffi::safe::luaL_requiref(state, ffi::LUA_JITLIBNAME, ffi::luaopen_jit, 1)?;
|
||||
ffi::lua_pop(state, 1);
|
||||
}
|
||||
|
||||
if libs.contains(StdLib::FFI) {
|
||||
let ffilib_name = CString::new(ffi::LUA_FFILIBNAME).unwrap();
|
||||
ffi::luaL_requiref(state, ffilib_name.as_ptr(), ffi::luaopen_ffi, 1);
|
||||
ffi::safe::luaL_requiref(state, ffi::LUA_FFILIBNAME, ffi::luaopen_ffi, 1)?;
|
||||
ffi::lua_pop(state, 1);
|
||||
}
|
||||
}
|
||||
|
||||
#[cfg(feature = "luajit")]
|
||||
ffi::lua_gc(state, ffi::LUA_GCRESTART, -1);
|
||||
|
||||
Ok(())
|
||||
}
|
||||
|
||||
unsafe fn ref_stack_pop(extra: &mut ExtraData) -> c_int {
|
||||
|
|
|
|||
140
src/scope.rs
140
src/scope.rs
|
|
@ -2,7 +2,7 @@ use std::any::Any;
|
|||
use std::cell::{Cell, Ref, RefCell, RefMut};
|
||||
use std::marker::PhantomData;
|
||||
use std::mem;
|
||||
use std::os::raw::c_void;
|
||||
use std::os::raw::{c_int, c_void};
|
||||
use std::rc::Rc;
|
||||
|
||||
#[cfg(feature = "serialize")]
|
||||
|
|
@ -17,8 +17,7 @@ use crate::userdata::{
|
|||
AnyUserData, MetaMethod, UserData, UserDataFields, UserDataMethods, UserDataWrapped,
|
||||
};
|
||||
use crate::util::{
|
||||
assert_stack, init_userdata_metatable, protect_lua_closure, push_string, push_userdata,
|
||||
take_userdata, StackGuard,
|
||||
assert_stack, init_userdata_metatable, push_userdata, take_userdata, StackGuard,
|
||||
};
|
||||
use crate::value::{FromLua, FromLuaMulti, MultiValue, ToLua, ToLuaMulti, Value};
|
||||
|
||||
|
|
@ -38,7 +37,7 @@ use {
|
|||
#[allow(clippy::type_complexity)]
|
||||
pub struct Scope<'lua, 'scope> {
|
||||
lua: &'lua Lua,
|
||||
destructors: RefCell<Vec<(LuaRef<'lua>, fn(LuaRef<'lua>) -> Vec<Box<dyn Any>>)>>,
|
||||
destructors: RefCell<Vec<(LuaRef<'lua>, Box<dyn Fn(LuaRef<'lua>) -> Vec<Box<dyn Any>> + 'lua>)>>,
|
||||
_scope_invariant: PhantomData<Cell<&'scope ()>>,
|
||||
}
|
||||
|
||||
|
|
@ -181,8 +180,11 @@ impl<'lua, 'scope> Scope<'lua, 'scope> {
|
|||
// Safe even though T may not be Send, because the parent Lua cannot be sent to another
|
||||
// thread while the Scope is alive (or the returned AnyUserData handle even).
|
||||
unsafe {
|
||||
let u = self.lua.make_userdata(data)?;
|
||||
self.destructors.borrow_mut().push((u.0.clone(), |u| {
|
||||
let ud = self.lua.make_userdata(data)?;
|
||||
|
||||
#[cfg(any(feature = "lua51", feature = "luajit"))]
|
||||
let newtable = self.lua.create_table()?;
|
||||
self.destructors.borrow_mut().push((ud.0.clone(), Box::new(move |u| {
|
||||
let state = u.lua.state;
|
||||
assert_stack(state, 2);
|
||||
u.lua.push_ref(&u);
|
||||
|
|
@ -191,14 +193,15 @@ impl<'lua, 'scope> Scope<'lua, 'scope> {
|
|||
#[cfg(any(feature = "lua54", feature = "lua53", feature = "lua52"))]
|
||||
ffi::lua_pushnil(state);
|
||||
#[cfg(any(feature = "lua51", feature = "luajit"))]
|
||||
ffi::lua_newtable(state);
|
||||
u.lua.push_ref(&newtable.0);
|
||||
ffi::lua_setuservalue(state, -2);
|
||||
|
||||
// We know the destructor has not run yet because we hold a reference to the
|
||||
// userdata.
|
||||
vec![Box::new(take_userdata::<UserDataCell<T>>(state))]
|
||||
}));
|
||||
Ok(u)
|
||||
})));
|
||||
|
||||
Ok(ud)
|
||||
}
|
||||
}
|
||||
|
||||
|
|
@ -258,7 +261,7 @@ impl<'lua, 'scope> Scope<'lua, 'scope> {
|
|||
if ffi::lua_getmetatable(lua.state, -1) == 0 {
|
||||
return Err(Error::UserDataTypeMismatch);
|
||||
}
|
||||
ffi::lua_pushstring(lua.state, cstr!("__mlua_ptr"));
|
||||
ffi::safe::lua_pushstring(lua.state, "__mlua_ptr")?;
|
||||
if ffi::lua_rawget(lua.state, -2) == ffi::LUA_TLIGHTUSERDATA {
|
||||
let ud_ptr = ffi::lua_touserdata(lua.state, -1);
|
||||
if ud_ptr == check_data.as_ptr() as *mut c_void {
|
||||
|
|
@ -326,77 +329,52 @@ impl<'lua, 'scope> Scope<'lua, 'scope> {
|
|||
push_userdata(lua.state, UserDataCell::new(UserDataWrapped::new(())))?;
|
||||
|
||||
// Prepare metatable, add meta methods first and then meta fields
|
||||
protect_lua_closure(lua.state, 0, 1, |state| {
|
||||
ffi::lua_newtable(state);
|
||||
let meta_methods_nrec = ud_methods.meta_methods.len() + ud_fields.meta_fields.len() + 1;
|
||||
ffi::safe::lua_createtable(lua.state, 0, meta_methods_nrec as c_int)?;
|
||||
|
||||
ffi::lua_pushlightuserdata(lua.state, data.as_ptr() as *mut c_void);
|
||||
ffi::safe::lua_rawsetfield(lua.state, -2, "__mlua_ptr")?;
|
||||
|
||||
// Add internal metamethod to store reference to the data
|
||||
ffi::lua_pushstring(state, cstr!("__mlua_ptr"));
|
||||
ffi::lua_pushlightuserdata(lua.state, data.as_ptr() as *mut c_void);
|
||||
ffi::lua_rawset(state, -3);
|
||||
})?;
|
||||
for (k, m) in ud_methods.meta_methods {
|
||||
push_string(lua.state, k.validate()?.name())?;
|
||||
lua.push_value(Value::Function(wrap_method(self, data.clone(), m)?))?;
|
||||
|
||||
protect_lua_closure(lua.state, 3, 1, |state| {
|
||||
ffi::lua_rawset(state, -3);
|
||||
})?;
|
||||
ffi::safe::lua_rawsetfield(lua.state, -2, k.validate()?.name())?;
|
||||
}
|
||||
for (k, f) in ud_fields.meta_fields {
|
||||
push_string(lua.state, k.validate()?.name())?;
|
||||
lua.push_value(f(mem::transmute(lua))?)?;
|
||||
|
||||
protect_lua_closure(lua.state, 3, 1, |state| {
|
||||
ffi::lua_rawset(state, -3);
|
||||
})?;
|
||||
ffi::safe::lua_rawsetfield(lua.state, -2, k.validate()?.name())?;
|
||||
}
|
||||
let metatable_index = ffi::lua_absindex(lua.state, -1);
|
||||
|
||||
let mut field_getters_index = None;
|
||||
if !ud_fields.field_getters.is_empty() {
|
||||
protect_lua_closure(lua.state, 0, 1, |state| {
|
||||
ffi::lua_newtable(state);
|
||||
})?;
|
||||
let field_getters_nrec = ud_fields.field_getters.len();
|
||||
if field_getters_nrec > 0 {
|
||||
ffi::safe::lua_createtable(lua.state, 0, field_getters_nrec as c_int)?;
|
||||
for (k, m) in ud_fields.field_getters {
|
||||
push_string(lua.state, &k)?;
|
||||
lua.push_value(Value::Function(wrap_method(self, data.clone(), m)?))?;
|
||||
|
||||
protect_lua_closure(lua.state, 3, 1, |state| {
|
||||
ffi::lua_rawset(state, -3);
|
||||
})?;
|
||||
ffi::safe::lua_rawsetfield(lua.state, -2, &k)?;
|
||||
}
|
||||
field_getters_index = Some(ffi::lua_absindex(lua.state, -1));
|
||||
}
|
||||
|
||||
let mut field_setters_index = None;
|
||||
if !ud_fields.field_setters.is_empty() {
|
||||
protect_lua_closure(lua.state, 0, 1, |state| {
|
||||
ffi::lua_newtable(state);
|
||||
})?;
|
||||
let field_setters_nrec = ud_fields.field_setters.len();
|
||||
if field_setters_nrec > 0 {
|
||||
ffi::safe::lua_createtable(lua.state, 0, field_setters_nrec as c_int)?;
|
||||
for (k, m) in ud_fields.field_setters {
|
||||
push_string(lua.state, &k)?;
|
||||
lua.push_value(Value::Function(wrap_method(self, data.clone(), m)?))?;
|
||||
|
||||
protect_lua_closure(lua.state, 3, 1, |state| {
|
||||
ffi::lua_rawset(state, -3);
|
||||
})?;
|
||||
ffi::safe::lua_rawsetfield(lua.state, -2, &k)?;
|
||||
}
|
||||
field_setters_index = Some(ffi::lua_absindex(lua.state, -1));
|
||||
}
|
||||
|
||||
let mut methods_index = None;
|
||||
if !ud_methods.methods.is_empty() {
|
||||
let methods_nrec = ud_methods.methods.len();
|
||||
if methods_nrec > 0 {
|
||||
// Create table used for methods lookup
|
||||
protect_lua_closure(lua.state, 0, 1, |state| {
|
||||
ffi::lua_newtable(state);
|
||||
})?;
|
||||
ffi::safe::lua_createtable(lua.state, 0, methods_nrec as c_int)?;
|
||||
for (k, m) in ud_methods.methods {
|
||||
push_string(lua.state, &k)?;
|
||||
lua.push_value(Value::Function(wrap_method(self, data.clone(), m)?))?;
|
||||
|
||||
protect_lua_closure(lua.state, 3, 1, |state| {
|
||||
ffi::lua_rawset(state, -3);
|
||||
})?;
|
||||
ffi::safe::lua_rawsetfield(lua.state, -2, &k)?;
|
||||
}
|
||||
methods_index = Some(ffi::lua_absindex(lua.state, -1));
|
||||
}
|
||||
|
|
@ -419,7 +397,9 @@ impl<'lua, 'scope> Scope<'lua, 'scope> {
|
|||
let ud = AnyUserData(lua.pop_ref());
|
||||
lua.register_userdata_metatable(mt_id as isize);
|
||||
|
||||
self.destructors.borrow_mut().push((ud.0.clone(), |ud| {
|
||||
#[cfg(any(feature = "lua51", feature = "luajit"))]
|
||||
let newtable = lua.create_table()?;
|
||||
self.destructors.borrow_mut().push((ud.0.clone(), Box::new(move |ud| {
|
||||
// We know the destructor has not run yet because we hold a reference to the userdata.
|
||||
let state = ud.lua.state;
|
||||
assert_stack(state, 2);
|
||||
|
|
@ -435,11 +415,11 @@ impl<'lua, 'scope> Scope<'lua, 'scope> {
|
|||
#[cfg(any(feature = "lua54", feature = "lua53", feature = "lua52"))]
|
||||
ffi::lua_pushnil(state);
|
||||
#[cfg(any(feature = "lua51", feature = "luajit"))]
|
||||
ffi::lua_newtable(state);
|
||||
u.lua.push_ref(&newtable.0);
|
||||
ffi::lua_setuservalue(state, -2);
|
||||
|
||||
vec![Box::new(take_userdata::<UserDataCell<()>>(state))]
|
||||
}));
|
||||
})));
|
||||
|
||||
Ok(ud)
|
||||
}
|
||||
|
|
@ -457,27 +437,26 @@ impl<'lua, 'scope> Scope<'lua, 'scope> {
|
|||
let f = mem::transmute::<Callback<'callback, 'scope>, Callback<'lua, 'static>>(f);
|
||||
let f = self.lua.create_callback(f)?;
|
||||
|
||||
let mut destructors = self.destructors.borrow_mut();
|
||||
destructors.push((f.0.clone(), |f| {
|
||||
self.destructors.borrow_mut().push((f.0.clone(), Box::new(|f| {
|
||||
let state = f.lua.state;
|
||||
assert_stack(state, 3);
|
||||
f.lua.push_ref(&f);
|
||||
|
||||
// We know the destructor has not run yet because we hold a reference to the callback.
|
||||
|
||||
ffi::lua_getupvalue(state, -1, 1);
|
||||
let ud1 = take_userdata::<Callback>(state);
|
||||
ffi::lua_pushnil(state);
|
||||
ffi::lua_setupvalue(state, -2, 1);
|
||||
|
||||
ffi::lua_getupvalue(state, -1, 2);
|
||||
let ud2 = take_userdata::<Lua>(state);
|
||||
let ud1 = take_userdata::<Callback>(state);
|
||||
ffi::lua_pushnil(state);
|
||||
ffi::lua_setupvalue(state, -2, 2);
|
||||
|
||||
ffi::lua_getupvalue(state, -1, 3);
|
||||
let ud2 = take_userdata::<Lua>(state);
|
||||
ffi::lua_pushnil(state);
|
||||
ffi::lua_setupvalue(state, -2, 3);
|
||||
|
||||
ffi::lua_pop(state, 1);
|
||||
vec![Box::new(ud1), Box::new(ud2)]
|
||||
}));
|
||||
})));
|
||||
Ok(f)
|
||||
}
|
||||
|
||||
|
|
@ -489,8 +468,11 @@ impl<'lua, 'scope> Scope<'lua, 'scope> {
|
|||
let f = mem::transmute::<AsyncCallback<'callback, 'scope>, AsyncCallback<'lua, 'static>>(f);
|
||||
let f = self.lua.create_async_callback(f)?;
|
||||
|
||||
let mut destructors = self.destructors.borrow_mut();
|
||||
destructors.push((f.0.clone(), |f| {
|
||||
// We need to pre-allocate strings to avoid failures in destructor.
|
||||
let get_poll_str = self.lua.create_string("get_poll")?;
|
||||
let poll_str = self.lua.create_string("poll")?;
|
||||
|
||||
self.destructors.borrow_mut().push((f.0.clone(), Box::new(move |f| {
|
||||
let state = f.lua.state;
|
||||
assert_stack(state, 4);
|
||||
f.lua.push_ref(&f);
|
||||
|
|
@ -504,41 +486,41 @@ impl<'lua, 'scope> Scope<'lua, 'scope> {
|
|||
ffi::lua_getfenv(state, -1);
|
||||
|
||||
// Second, get the `get_poll()` closure using the corresponding key
|
||||
ffi::lua_pushstring(state, cstr!("get_poll"));
|
||||
f.lua.push_ref(&get_poll_str.0);
|
||||
ffi::lua_rawget(state, -2);
|
||||
|
||||
// Destroy all upvalues
|
||||
ffi::lua_getupvalue(state, -1, 1);
|
||||
ffi::lua_getupvalue(state, -1, 2);
|
||||
let ud1 = take_userdata::<AsyncCallback>(state);
|
||||
ffi::lua_pushnil(state);
|
||||
ffi::lua_setupvalue(state, -2, 1);
|
||||
ffi::lua_setupvalue(state, -2, 2);
|
||||
|
||||
ffi::lua_getupvalue(state, -1, 2);
|
||||
ffi::lua_getupvalue(state, -1, 3);
|
||||
let ud2 = take_userdata::<Lua>(state);
|
||||
ffi::lua_pushnil(state);
|
||||
ffi::lua_setupvalue(state, -2, 2);
|
||||
ffi::lua_setupvalue(state, -2, 3);
|
||||
|
||||
ffi::lua_pop(state, 1);
|
||||
let mut data: Vec<Box<dyn Any>> = vec![Box::new(ud1), Box::new(ud2)];
|
||||
|
||||
// Finally, get polled future and destroy it
|
||||
ffi::lua_pushstring(state, cstr!("poll"));
|
||||
f.lua.push_ref(&poll_str.0);
|
||||
if ffi::lua_rawget(state, -2) == ffi::LUA_TFUNCTION {
|
||||
ffi::lua_getupvalue(state, -1, 1);
|
||||
ffi::lua_getupvalue(state, -1, 2);
|
||||
let ud3 = take_userdata::<LocalBoxFuture<Result<MultiValue>>>(state);
|
||||
ffi::lua_pushnil(state);
|
||||
ffi::lua_setupvalue(state, -2, 1);
|
||||
ffi::lua_setupvalue(state, -2, 2);
|
||||
data.push(Box::new(ud3));
|
||||
|
||||
ffi::lua_getupvalue(state, -1, 2);
|
||||
ffi::lua_getupvalue(state, -1, 3);
|
||||
let ud4 = take_userdata::<Lua>(state);
|
||||
ffi::lua_pushnil(state);
|
||||
ffi::lua_setupvalue(state, -2, 2);
|
||||
ffi::lua_setupvalue(state, -2, 3);
|
||||
data.push(Box::new(ud4));
|
||||
}
|
||||
|
||||
data
|
||||
}));
|
||||
})));
|
||||
|
||||
Ok(f)
|
||||
}
|
||||
|
|
|
|||
|
|
@ -1,6 +1,6 @@
|
|||
//! (De)Serialization support using serde.
|
||||
|
||||
use std::os::raw::{c_int, c_void};
|
||||
use std::os::raw::c_void;
|
||||
use std::ptr;
|
||||
|
||||
use serde::{Deserialize, Serialize};
|
||||
|
|
@ -9,7 +9,8 @@ use crate::error::Result;
|
|||
use crate::ffi;
|
||||
use crate::lua::Lua;
|
||||
use crate::table::Table;
|
||||
use crate::util::{assert_stack, protect_lua, StackGuard};
|
||||
use crate::types::LightUserData;
|
||||
use crate::util::{assert_stack, StackGuard};
|
||||
use crate::value::Value;
|
||||
|
||||
pub trait LuaSerdeExt<'lua> {
|
||||
|
|
@ -133,29 +134,17 @@ pub trait LuaSerdeExt<'lua> {
|
|||
|
||||
impl<'lua> LuaSerdeExt<'lua> for Lua {
|
||||
fn null(&'lua self) -> Result<Value<'lua>> {
|
||||
unsafe {
|
||||
let _sg = StackGuard::new(self.state);
|
||||
assert_stack(self.state, 3);
|
||||
|
||||
unsafe extern "C" fn push_null(state: *mut ffi::lua_State) -> c_int {
|
||||
ffi::lua_pushlightuserdata(state, ptr::null_mut());
|
||||
1
|
||||
}
|
||||
protect_lua(self.state, 0, push_null)?;
|
||||
Ok(self.pop_value())
|
||||
}
|
||||
// TODO: Remove Result?
|
||||
Ok(Value::LightUserData(LightUserData(ptr::null_mut())))
|
||||
}
|
||||
|
||||
fn array_metatable(&'lua self) -> Result<Table<'lua>> {
|
||||
unsafe {
|
||||
let _sg = StackGuard::new(self.state);
|
||||
assert_stack(self.state, 3);
|
||||
assert_stack(self.state, 1);
|
||||
|
||||
push_array_metatable(self.state);
|
||||
|
||||
unsafe extern "C" fn get_array_mt(state: *mut ffi::lua_State) -> c_int {
|
||||
push_array_metatable(state);
|
||||
1
|
||||
}
|
||||
protect_lua(self.state, 0, get_array_mt)?;
|
||||
Ok(Table(self.pop_ref()))
|
||||
}
|
||||
}
|
||||
|
|
@ -175,18 +164,17 @@ impl<'lua> LuaSerdeExt<'lua> for Lua {
|
|||
}
|
||||
}
|
||||
|
||||
pub(crate) unsafe fn init_metatables(state: *mut ffi::lua_State) {
|
||||
pub(crate) unsafe fn init_metatables(state: *mut ffi::lua_State) -> Result<()> {
|
||||
ffi::lua_pushlightuserdata(
|
||||
state,
|
||||
&ARRAY_METATABLE_REGISTRY_KEY as *const u8 as *mut c_void,
|
||||
);
|
||||
ffi::lua_newtable(state);
|
||||
ffi::safe::lua_createtable(state, 0, 1)?;
|
||||
|
||||
ffi::lua_pushstring(state, cstr!("__metatable"));
|
||||
ffi::lua_pushboolean(state, 0);
|
||||
ffi::lua_rawset(state, -3);
|
||||
ffi::safe::lua_rawsetfield(state, -2, "__metatable")?;
|
||||
|
||||
ffi::lua_rawset(state, ffi::LUA_REGISTRYINDEX);
|
||||
ffi::safe::lua_rawset(state, ffi::LUA_REGISTRYINDEX)
|
||||
}
|
||||
|
||||
pub(crate) unsafe fn push_array_metatable(state: *mut ffi::lua_State) {
|
||||
|
|
|
|||
|
|
@ -9,7 +9,7 @@ use crate::lua::Lua;
|
|||
use crate::string::String;
|
||||
use crate::table::Table;
|
||||
use crate::types::Integer;
|
||||
use crate::util::{assert_stack, protect_lua, StackGuard};
|
||||
use crate::util::{assert_stack, StackGuard};
|
||||
use crate::value::{ToLua, Value};
|
||||
|
||||
/// A struct for serializing Rust values into Lua values.
|
||||
|
|
@ -208,18 +208,12 @@ impl<'lua> ser::SerializeSeq for SerializeVec<'lua> {
|
|||
let value = lua.to_value(value)?;
|
||||
unsafe {
|
||||
let _sg = StackGuard::new(lua.state);
|
||||
assert_stack(lua.state, 4);
|
||||
assert_stack(lua.state, 5);
|
||||
|
||||
lua.push_ref(&self.table.0);
|
||||
lua.push_value(value)?;
|
||||
|
||||
unsafe extern "C" fn push_to_table(state: *mut ffi::lua_State) -> c_int {
|
||||
let len = ffi::lua_rawlen(state, -2) as Integer;
|
||||
ffi::lua_rawseti(state, -2, len + 1);
|
||||
1
|
||||
}
|
||||
|
||||
protect_lua(lua.state, 2, push_to_table)
|
||||
let len = ffi::lua_rawlen(lua.state, -2) as Integer;
|
||||
ffi::safe::lua_rawseti(lua.state, -2, len + 1)
|
||||
}
|
||||
}
|
||||
|
||||
|
|
|
|||
107
src/table.rs
107
src/table.rs
|
|
@ -1,5 +1,4 @@
|
|||
use std::marker::PhantomData;
|
||||
use std::os::raw::c_int;
|
||||
|
||||
#[cfg(feature = "serialize")]
|
||||
use {
|
||||
|
|
@ -11,7 +10,7 @@ use crate::error::{Error, Result};
|
|||
use crate::ffi;
|
||||
use crate::function::Function;
|
||||
use crate::types::{Integer, LuaRef};
|
||||
use crate::util::{assert_stack, protect_lua, protect_lua_closure, StackGuard};
|
||||
use crate::util::{assert_stack, StackGuard};
|
||||
use crate::value::{FromLua, FromLuaMulti, Nil, ToLua, ToLuaMulti, Value};
|
||||
|
||||
#[cfg(feature = "async")]
|
||||
|
|
@ -60,19 +59,15 @@ impl<'lua> Table<'lua> {
|
|||
let lua = self.0.lua;
|
||||
let key = key.to_lua(lua)?;
|
||||
let value = value.to_lua(lua)?;
|
||||
|
||||
unsafe {
|
||||
let _sg = StackGuard::new(lua.state);
|
||||
assert_stack(lua.state, 6);
|
||||
assert_stack(lua.state, 5);
|
||||
|
||||
lua.push_ref(&self.0);
|
||||
lua.push_value(key)?;
|
||||
lua.push_value(value)?;
|
||||
|
||||
unsafe extern "C" fn set_table(state: *mut ffi::lua_State) -> c_int {
|
||||
ffi::lua_settable(state, -3);
|
||||
1
|
||||
}
|
||||
protect_lua(lua.state, 3, set_table)
|
||||
ffi::safe::lua_settable(lua.state, -3)
|
||||
}
|
||||
}
|
||||
|
||||
|
|
@ -103,18 +98,15 @@ impl<'lua> Table<'lua> {
|
|||
pub fn get<K: ToLua<'lua>, V: FromLua<'lua>>(&self, key: K) -> Result<V> {
|
||||
let lua = self.0.lua;
|
||||
let key = key.to_lua(lua)?;
|
||||
|
||||
let value = unsafe {
|
||||
let _sg = StackGuard::new(lua.state);
|
||||
assert_stack(lua.state, 5);
|
||||
assert_stack(lua.state, 4);
|
||||
|
||||
lua.push_ref(&self.0);
|
||||
lua.push_value(key)?;
|
||||
ffi::safe::lua_gettable(lua.state, -2)?;
|
||||
|
||||
unsafe extern "C" fn get_table(state: *mut ffi::lua_State) -> c_int {
|
||||
ffi::lua_gettable(state, -2);
|
||||
1
|
||||
}
|
||||
protect_lua(lua.state, 2, get_table)?;
|
||||
lua.pop_value()
|
||||
};
|
||||
V::from_lua(value, lua)
|
||||
|
|
@ -127,19 +119,13 @@ impl<'lua> Table<'lua> {
|
|||
|
||||
unsafe {
|
||||
let _sg = StackGuard::new(lua.state);
|
||||
assert_stack(lua.state, 5);
|
||||
assert_stack(lua.state, 4);
|
||||
|
||||
lua.push_ref(&self.0);
|
||||
lua.push_value(key)?;
|
||||
ffi::safe::lua_gettable(lua.state, -2)?;
|
||||
|
||||
unsafe extern "C" fn get_table(state: *mut ffi::lua_State) -> c_int {
|
||||
ffi::lua_gettable(state, -2);
|
||||
1
|
||||
}
|
||||
protect_lua(lua.state, 2, get_table)?;
|
||||
|
||||
let has = ffi::lua_isnil(lua.state, -1) == 0;
|
||||
Ok(has)
|
||||
Ok(ffi::lua_isnil(lua.state, -1) == 0)
|
||||
}
|
||||
}
|
||||
|
||||
|
|
@ -207,19 +193,12 @@ impl<'lua> Table<'lua> {
|
|||
|
||||
unsafe {
|
||||
let _sg = StackGuard::new(lua.state);
|
||||
assert_stack(lua.state, 6);
|
||||
assert_stack(lua.state, 5);
|
||||
|
||||
lua.push_ref(&self.0);
|
||||
lua.push_value(key)?;
|
||||
lua.push_value(value)?;
|
||||
|
||||
unsafe extern "C" fn raw_set(state: *mut ffi::lua_State) -> c_int {
|
||||
ffi::lua_rawset(state, -3);
|
||||
0
|
||||
}
|
||||
protect_lua(lua.state, 3, raw_set)?;
|
||||
|
||||
Ok(())
|
||||
ffi::safe::lua_rawset(lua.state, -3)
|
||||
}
|
||||
}
|
||||
|
||||
|
|
@ -227,13 +206,15 @@ impl<'lua> Table<'lua> {
|
|||
pub fn raw_get<K: ToLua<'lua>, V: FromLua<'lua>>(&self, key: K) -> Result<V> {
|
||||
let lua = self.0.lua;
|
||||
let key = key.to_lua(lua)?;
|
||||
|
||||
let value = unsafe {
|
||||
let _sg = StackGuard::new(lua.state);
|
||||
assert_stack(lua.state, 3);
|
||||
assert_stack(lua.state, 2);
|
||||
|
||||
lua.push_ref(&self.0);
|
||||
lua.push_value(key)?;
|
||||
ffi::lua_rawget(lua.state, -2);
|
||||
|
||||
lua.pop_value()
|
||||
};
|
||||
V::from_lua(value, lua)
|
||||
|
|
@ -251,19 +232,11 @@ impl<'lua> Table<'lua> {
|
|||
let value = value.to_lua(lua)?;
|
||||
unsafe {
|
||||
let _sg = StackGuard::new(lua.state);
|
||||
assert_stack(lua.state, 6);
|
||||
assert_stack(lua.state, 5);
|
||||
|
||||
lua.push_ref(&self.0);
|
||||
lua.push_value(value)?;
|
||||
|
||||
protect_lua_closure(lua.state, 2, 0, |state| {
|
||||
for i in (idx..size + 1).rev() {
|
||||
// table[i+1] = table[i]
|
||||
ffi::lua_rawgeti(state, -2, i);
|
||||
ffi::lua_rawseti(state, -3, i + 1);
|
||||
}
|
||||
ffi::lua_rawseti(state, -2, idx);
|
||||
})
|
||||
ffi::safe::lua_rawinsert(lua.state, -2, idx)
|
||||
}
|
||||
}
|
||||
|
||||
|
|
@ -285,18 +258,10 @@ impl<'lua> Table<'lua> {
|
|||
}
|
||||
unsafe {
|
||||
let _sg = StackGuard::new(lua.state);
|
||||
assert_stack(lua.state, 6);
|
||||
assert_stack(lua.state, 4);
|
||||
|
||||
lua.push_ref(&self.0);
|
||||
|
||||
protect_lua_closure(lua.state, 1, 0, |state| {
|
||||
for i in idx..size {
|
||||
ffi::lua_rawgeti(state, -1, i + 1);
|
||||
ffi::lua_rawseti(state, -2, i);
|
||||
}
|
||||
ffi::lua_pushnil(state);
|
||||
ffi::lua_rawseti(state, -2, size);
|
||||
})
|
||||
ffi::safe::lua_rawremove(lua.state, -1, idx)
|
||||
}
|
||||
}
|
||||
_ => self.raw_set(key, Nil),
|
||||
|
|
@ -313,8 +278,9 @@ impl<'lua> Table<'lua> {
|
|||
unsafe {
|
||||
let _sg = StackGuard::new(lua.state);
|
||||
assert_stack(lua.state, 4);
|
||||
|
||||
lua.push_ref(&self.0);
|
||||
protect_lua_closure(lua.state, 1, 0, |state| ffi::luaL_len(state, -1))
|
||||
ffi::safe::luaL_len(lua.state, -1)
|
||||
}
|
||||
}
|
||||
|
||||
|
|
@ -324,9 +290,9 @@ impl<'lua> Table<'lua> {
|
|||
unsafe {
|
||||
let _sg = StackGuard::new(lua.state);
|
||||
assert_stack(lua.state, 1);
|
||||
|
||||
lua.push_ref(&self.0);
|
||||
let len = ffi::lua_rawlen(lua.state, -1);
|
||||
len as Integer
|
||||
ffi::lua_rawlen(lua.state, -1) as Integer
|
||||
}
|
||||
}
|
||||
|
||||
|
|
@ -337,13 +303,13 @@ impl<'lua> Table<'lua> {
|
|||
let lua = self.0.lua;
|
||||
unsafe {
|
||||
let _sg = StackGuard::new(lua.state);
|
||||
assert_stack(lua.state, 1);
|
||||
assert_stack(lua.state, 2);
|
||||
|
||||
lua.push_ref(&self.0);
|
||||
if ffi::lua_getmetatable(lua.state, -1) == 0 {
|
||||
None
|
||||
} else {
|
||||
let table = Table(lua.pop_ref());
|
||||
Some(table)
|
||||
Some(Table(lua.pop_ref()))
|
||||
}
|
||||
}
|
||||
}
|
||||
|
|
@ -356,7 +322,8 @@ impl<'lua> Table<'lua> {
|
|||
let lua = self.0.lua;
|
||||
unsafe {
|
||||
let _sg = StackGuard::new(lua.state);
|
||||
assert_stack(lua.state, 1);
|
||||
assert_stack(lua.state, 2);
|
||||
|
||||
lua.push_ref(&self.0);
|
||||
if let Some(metatable) = metatable {
|
||||
lua.push_ref(&metatable.0);
|
||||
|
|
@ -495,6 +462,7 @@ impl<'lua> Table<'lua> {
|
|||
unsafe {
|
||||
let _sg = StackGuard::new(lua.state);
|
||||
assert_stack(lua.state, 3);
|
||||
|
||||
lua.push_ref(&self.0);
|
||||
if ffi::lua_getmetatable(lua.state, -1) == 0 {
|
||||
return false;
|
||||
|
|
@ -685,15 +653,12 @@ where
|
|||
let res = (|| {
|
||||
let res = unsafe {
|
||||
let _sg = StackGuard::new(lua.state);
|
||||
assert_stack(lua.state, 6);
|
||||
assert_stack(lua.state, 4);
|
||||
|
||||
lua.push_ref(&self.table);
|
||||
lua.push_value(next_key)?;
|
||||
|
||||
let next = protect_lua_closure(lua.state, 2, ffi::LUA_MULTRET, |state| {
|
||||
ffi::lua_next(state, -2) != 0
|
||||
})?;
|
||||
if next {
|
||||
if ffi::safe::lua_next(lua.state, -2)? != 0 {
|
||||
ffi::lua_pushvalue(lua.state, -2);
|
||||
let key = lua.pop_value();
|
||||
let value = lua.pop_value();
|
||||
|
|
@ -748,15 +713,15 @@ where
|
|||
|
||||
let res = unsafe {
|
||||
let _sg = StackGuard::new(lua.state);
|
||||
assert_stack(lua.state, 5);
|
||||
assert_stack(lua.state, 4);
|
||||
|
||||
lua.push_ref(&self.table);
|
||||
let lua_geti = if self.raw {
|
||||
ffi::lua_rawgeti
|
||||
let res = if self.raw {
|
||||
Ok(ffi::lua_rawgeti(lua.state, -1, index))
|
||||
} else {
|
||||
ffi::lua_geti
|
||||
ffi::safe::lua_geti(lua.state, -1, index)
|
||||
};
|
||||
match protect_lua_closure(lua.state, 1, 1, |state| lua_geti(state, -1, index)) {
|
||||
match res {
|
||||
Ok(ffi::LUA_TNIL) if index > self.len.unwrap_or(0) => None,
|
||||
Ok(_) => {
|
||||
let value = lua.pop_value();
|
||||
|
|
|
|||
|
|
@ -3,9 +3,7 @@ use std::os::raw::c_int;
|
|||
use crate::error::{Error, Result};
|
||||
use crate::ffi;
|
||||
use crate::types::LuaRef;
|
||||
use crate::util::{
|
||||
assert_stack, check_stack, error_traceback, pop_error, protect_lua_closure, StackGuard,
|
||||
};
|
||||
use crate::util::{assert_stack, check_stack, pop_error, StackGuard};
|
||||
use crate::value::{FromLuaMulti, MultiValue, ToLuaMulti};
|
||||
|
||||
#[cfg(feature = "async")]
|
||||
|
|
@ -111,18 +109,17 @@ impl<'lua> Thread<'lua> {
|
|||
let args = args.to_lua_multi(lua)?;
|
||||
let results = unsafe {
|
||||
let _sg = StackGuard::new(lua.state);
|
||||
assert_stack(lua.state, 3);
|
||||
assert_stack(lua.state, 2);
|
||||
|
||||
lua.push_ref(&self.0);
|
||||
let thread_state = ffi::lua_tothread(lua.state, -1);
|
||||
ffi::lua_pop(lua.state, 1);
|
||||
|
||||
let status = ffi::lua_status(thread_state);
|
||||
if status != ffi::LUA_YIELD && ffi::lua_gettop(thread_state) == 0 {
|
||||
return Err(Error::CoroutineInactive);
|
||||
}
|
||||
|
||||
ffi::lua_pop(lua.state, 1);
|
||||
|
||||
let nargs = args.len() as c_int;
|
||||
check_stack(lua.state, nargs)?;
|
||||
check_stack(thread_state, nargs + 1)?;
|
||||
|
|
@ -136,14 +133,12 @@ impl<'lua> Thread<'lua> {
|
|||
|
||||
let ret = ffi::lua_resume(thread_state, lua.state, nargs, &mut nresults as *mut c_int);
|
||||
if ret != ffi::LUA_OK && ret != ffi::LUA_YIELD {
|
||||
protect_lua_closure(lua.state, 0, 0, |_| {
|
||||
error_traceback(thread_state);
|
||||
0
|
||||
})?;
|
||||
ffi::safe::error_traceback2(lua.state, thread_state)?;
|
||||
return Err(pop_error(thread_state, ret));
|
||||
}
|
||||
|
||||
let mut results = MultiValue::new();
|
||||
check_stack(lua.state, nresults)?;
|
||||
ffi::lua_xmove(thread_state, lua.state, nresults);
|
||||
|
||||
assert_stack(lua.state, 2);
|
||||
|
|
@ -343,7 +338,7 @@ impl WakerGuard {
|
|||
|
||||
ffi::lua_pushlightuserdata(state, &WAKER_REGISTRY_KEY as *const u8 as *mut c_void);
|
||||
push_gc_userdata(state, waker)?;
|
||||
ffi::lua_rawset(state, ffi::LUA_REGISTRYINDEX);
|
||||
ffi::safe::lua_rawset(state, ffi::LUA_REGISTRYINDEX)?;
|
||||
|
||||
Ok(WakerGuard(state))
|
||||
}
|
||||
|
|
@ -360,7 +355,7 @@ impl Drop for WakerGuard {
|
|||
|
||||
ffi::lua_pushlightuserdata(state, &WAKER_REGISTRY_KEY as *const u8 as *mut c_void);
|
||||
ffi::lua_pushnil(state);
|
||||
ffi::lua_rawset(state, ffi::LUA_REGISTRYINDEX);
|
||||
ffi::lua_rawset(state, ffi::LUA_REGISTRYINDEX); // TODO: make safe
|
||||
}
|
||||
}
|
||||
}
|
||||
|
|
|
|||
|
|
@ -1,3 +1,4 @@
|
|||
// OK
|
||||
use std::cell::RefCell;
|
||||
use std::os::raw::{c_int, c_void};
|
||||
use std::sync::{Arc, Mutex};
|
||||
|
|
|
|||
|
|
@ -1,3 +1,4 @@
|
|||
// OK
|
||||
use std::cell::{Ref, RefMut};
|
||||
use std::fmt;
|
||||
use std::hash::{Hash, Hasher};
|
||||
|
|
@ -17,7 +18,7 @@ use crate::ffi;
|
|||
use crate::function::Function;
|
||||
use crate::lua::Lua;
|
||||
use crate::table::{Table, TablePairs};
|
||||
use crate::types::{LuaRef, MaybeSend, UserDataCell};
|
||||
use crate::types::{Integer, LuaRef, MaybeSend, UserDataCell};
|
||||
use crate::util::{assert_stack, get_destructed_userdata_metatable, get_userdata, StackGuard};
|
||||
use crate::value::{FromLua, FromLuaMulti, ToLua, ToLuaMulti, Value};
|
||||
|
||||
|
|
@ -679,7 +680,7 @@ impl<'lua> AnyUserData<'lua> {
|
|||
// Lua 5.2/5.1 allows to store only a table. Then we will wrap the value.
|
||||
let t = lua.create_table()?;
|
||||
t.raw_set(1, v)?;
|
||||
crate::Value::Table(t)
|
||||
Value::Table(t)
|
||||
};
|
||||
#[cfg(any(feature = "lua54", feature = "lua53"))]
|
||||
let v = v.to_lua(lua)?;
|
||||
|
|
@ -702,13 +703,13 @@ impl<'lua> AnyUserData<'lua> {
|
|||
let lua = self.0.lua;
|
||||
let res = unsafe {
|
||||
let _sg = StackGuard::new(lua.state);
|
||||
assert_stack(lua.state, 3);
|
||||
assert_stack(lua.state, 2);
|
||||
lua.push_ref(&self.0);
|
||||
ffi::lua_getuservalue(lua.state, -1);
|
||||
lua.pop_value()
|
||||
};
|
||||
#[cfg(any(feature = "lua52", feature = "lua51", feature = "luajit"))]
|
||||
return crate::Table::from_lua(res, lua)?.get(1);
|
||||
return Table::from_lua(res, lua)?.get(1);
|
||||
#[cfg(any(feature = "lua54", feature = "lua53"))]
|
||||
V::from_lua(res, lua)
|
||||
}
|
||||
|
|
@ -754,10 +755,9 @@ impl<'lua> AnyUserData<'lua> {
|
|||
unsafe {
|
||||
let lua = self.0.lua;
|
||||
let _sg = StackGuard::new(lua.state);
|
||||
assert_stack(lua.state, 3);
|
||||
assert_stack(lua.state, 2);
|
||||
|
||||
lua.push_ref(&self.0);
|
||||
|
||||
if ffi::lua_getmetatable(lua.state, -1) == 0 {
|
||||
return Err(Error::UserDataTypeMismatch);
|
||||
}
|
||||
|
|
@ -798,28 +798,26 @@ impl<'lua> AnyUserData<'lua> {
|
|||
assert_stack(lua.state, 3);
|
||||
|
||||
lua.push_ref(&self.0);
|
||||
|
||||
if ffi::lua_getmetatable(lua.state, -1) == 0 {
|
||||
Err(Error::UserDataTypeMismatch)
|
||||
} else {
|
||||
ffi::lua_rawgeti(
|
||||
lua.state,
|
||||
ffi::LUA_REGISTRYINDEX,
|
||||
lua.userdata_metatable::<T>()? as ffi::lua_Integer,
|
||||
);
|
||||
return Err(Error::UserDataTypeMismatch);
|
||||
}
|
||||
ffi::lua_rawgeti(
|
||||
lua.state,
|
||||
ffi::LUA_REGISTRYINDEX,
|
||||
lua.userdata_metatable::<T>()? as Integer,
|
||||
);
|
||||
|
||||
if ffi::lua_rawequal(lua.state, -1, -2) == 0 {
|
||||
// Maybe UserData destructed?
|
||||
ffi::lua_pop(lua.state, 1);
|
||||
get_destructed_userdata_metatable(lua.state);
|
||||
if ffi::lua_rawequal(lua.state, -1, -2) == 1 {
|
||||
Err(Error::UserDataDestructed)
|
||||
} else {
|
||||
Err(Error::UserDataTypeMismatch)
|
||||
}
|
||||
if ffi::lua_rawequal(lua.state, -1, -2) == 0 {
|
||||
// Maybe UserData destructed?
|
||||
ffi::lua_pop(lua.state, 1);
|
||||
get_destructed_userdata_metatable(lua.state);
|
||||
if ffi::lua_rawequal(lua.state, -1, -2) == 1 {
|
||||
Err(Error::UserDataDestructed)
|
||||
} else {
|
||||
func(&*get_userdata::<UserDataCell<T>>(lua.state, -3))
|
||||
Err(Error::UserDataTypeMismatch)
|
||||
}
|
||||
} else {
|
||||
func(&*get_userdata::<UserDataCell<T>>(lua.state, -3))
|
||||
}
|
||||
}
|
||||
}
|
||||
|
|
@ -918,17 +916,17 @@ impl<'lua> Serialize for AnyUserData<'lua> {
|
|||
where
|
||||
S: Serializer,
|
||||
{
|
||||
let f = || unsafe {
|
||||
let res = (|| unsafe {
|
||||
let lua = self.0.lua;
|
||||
let _sg = StackGuard::new(lua.state);
|
||||
assert_stack(lua.state, 2);
|
||||
assert_stack(lua.state, 3);
|
||||
|
||||
lua.push_userdata_ref(&self.0)?;
|
||||
let ud = &*get_userdata::<UserDataCell<()>>(lua.state, -1);
|
||||
(*ud.try_borrow().map_err(|_| Error::UserDataBorrowError)?.ser)
|
||||
.serialize(serializer)
|
||||
.map_err(|err| Error::SerializeError(err.to_string()))
|
||||
};
|
||||
f().map_err(ser::Error::custom)
|
||||
})();
|
||||
res.map_err(ser::Error::custom)
|
||||
}
|
||||
}
|
||||
|
|
|
|||
557
src/util.rs
557
src/util.rs
|
|
@ -1,8 +1,7 @@
|
|||
use std::any::{Any, TypeId};
|
||||
use std::borrow::Cow;
|
||||
use std::collections::HashMap;
|
||||
use std::fmt::Write;
|
||||
use std::os::raw::{c_char, c_int, c_void};
|
||||
use std::os::raw::{c_int, c_void};
|
||||
use std::panic::{catch_unwind, resume_unwind, AssertUnwindSafe};
|
||||
use std::sync::{Arc, Mutex};
|
||||
use std::{mem, ptr, slice};
|
||||
|
|
@ -69,17 +68,17 @@ impl Drop for StackGuard {
|
|||
|
||||
// Call a function that calls into the Lua API and may trigger a Lua error (longjmp) in a safe way.
|
||||
// Wraps the inner function in a call to `lua_pcall`, so the inner function only has access to a
|
||||
// limited lua stack. `nargs` is the same as the the parameter to `lua_pcall`, and `nresults` is
|
||||
// always LUA_MULTRET. Internally uses 2 extra stack spaces, and does not call checkstack.
|
||||
// limited lua stack. `nargs` is the same as the the parameter to `lua_pcall`, and `nresults` is
|
||||
// always LUA_MULTRET. Internally uses 2 extra stack spaces, and does not call checkstack.
|
||||
// Provided function must *never* panic.
|
||||
pub unsafe fn protect_lua(
|
||||
state: *mut ffi::lua_State,
|
||||
nargs: c_int,
|
||||
f: unsafe extern "C" fn(*mut ffi::lua_State) -> c_int,
|
||||
f: unsafe extern "C" fn(*mut ffi::lua_State) -> c_int, // Must be "C-unwind" after stabilizing
|
||||
) -> Result<()> {
|
||||
let stack_start = ffi::lua_gettop(state) - nargs;
|
||||
|
||||
ffi::lua_pushcfunction(state, error_traceback);
|
||||
ffi::lua_pushcfunction(state, ffi::safe::error_traceback);
|
||||
ffi::lua_pushcfunction(state, f);
|
||||
if nargs > 0 {
|
||||
ffi::lua_rotate(state, stack_start + 1, 2);
|
||||
|
|
@ -95,84 +94,12 @@ pub unsafe fn protect_lua(
|
|||
}
|
||||
}
|
||||
|
||||
// Call a function that calls into the Lua API and may trigger a Lua error (longjmp) in a safe way.
|
||||
// Wraps the inner function in a call to `lua_pcall`, so the inner function only has access to a
|
||||
// limited lua stack. `nargs` and `nresults` are similar to the parameters of `lua_pcall`, but the
|
||||
// given function return type is not the return value count, instead the inner function return
|
||||
// values are assumed to match the `nresults` param. Internally uses 3 extra stack spaces, and does
|
||||
// not call checkstack. Provided function must *not* panic, and since it will generally be
|
||||
// lonjmping, should not contain any values that implement Drop.
|
||||
pub unsafe fn protect_lua_closure<F, R>(
|
||||
state: *mut ffi::lua_State,
|
||||
nargs: c_int,
|
||||
nresults: c_int,
|
||||
f: F,
|
||||
) -> Result<R>
|
||||
where
|
||||
F: Fn(*mut ffi::lua_State) -> R,
|
||||
R: Copy,
|
||||
{
|
||||
union URes<R: Copy> {
|
||||
uninit: (),
|
||||
init: R,
|
||||
}
|
||||
|
||||
struct Params<F, R: Copy> {
|
||||
function: F,
|
||||
result: URes<R>,
|
||||
nresults: c_int,
|
||||
}
|
||||
|
||||
unsafe extern "C" fn do_call<F, R>(state: *mut ffi::lua_State) -> c_int
|
||||
where
|
||||
R: Copy,
|
||||
F: Fn(*mut ffi::lua_State) -> R,
|
||||
{
|
||||
let params = ffi::lua_touserdata(state, -1) as *mut Params<F, R>;
|
||||
ffi::lua_pop(state, 1);
|
||||
|
||||
(*params).result.init = ((*params).function)(state);
|
||||
|
||||
if (*params).nresults == ffi::LUA_MULTRET {
|
||||
ffi::lua_gettop(state)
|
||||
} else {
|
||||
(*params).nresults
|
||||
}
|
||||
}
|
||||
|
||||
let stack_start = ffi::lua_gettop(state) - nargs;
|
||||
|
||||
ffi::lua_pushcfunction(state, error_traceback);
|
||||
ffi::lua_pushcfunction(state, do_call::<F, R>);
|
||||
if nargs > 0 {
|
||||
ffi::lua_rotate(state, stack_start + 1, 2);
|
||||
}
|
||||
|
||||
let mut params = Params {
|
||||
function: f,
|
||||
result: URes { uninit: () },
|
||||
nresults,
|
||||
};
|
||||
|
||||
ffi::lua_pushlightuserdata(state, &mut params as *mut Params<F, R> as *mut c_void);
|
||||
let ret = ffi::lua_pcall(state, nargs + 1, nresults, stack_start + 1);
|
||||
ffi::lua_remove(state, stack_start + 1);
|
||||
|
||||
if ret == ffi::LUA_OK {
|
||||
// LUA_OK is only returned when the do_call function has completed successfully, so
|
||||
// params.result is definitely initialized.
|
||||
Ok(params.result.init)
|
||||
} else {
|
||||
Err(pop_error(state, ret))
|
||||
}
|
||||
}
|
||||
|
||||
// Pops an error off of the stack and returns it. The specific behavior depends on the type of the
|
||||
// Pops an error off of the stack and returns it. The specific behavior depends on the type of the
|
||||
// error at the top of the stack:
|
||||
// 1) If the error is actually a WrappedPanic, this will continue the panic.
|
||||
// 2) If the error on the top of the stack is actually a WrappedError, just returns it.
|
||||
// 3) Otherwise, interprets the error as the appropriate lua error.
|
||||
// Uses 2 stack spaces, does not call lua_checkstack.
|
||||
// Uses 2 stack spaces, does not call checkstack.
|
||||
pub unsafe fn pop_error(state: *mut ffi::lua_State, err_code: c_int) -> Error {
|
||||
mlua_debug_assert!(
|
||||
err_code != ffi::LUA_OK && err_code != ffi::LUA_YIELD,
|
||||
|
|
@ -189,7 +116,7 @@ pub unsafe fn pop_error(state: *mut ffi::lua_State, err_code: c_int) -> Error {
|
|||
Error::PreviouslyResumedPanic
|
||||
}
|
||||
} else {
|
||||
let err_string = to_string(state, -1).into_owned();
|
||||
let err_string = to_string(state, -1);
|
||||
ffi::lua_pop(state, 1);
|
||||
|
||||
match err_code {
|
||||
|
|
@ -218,22 +145,9 @@ pub unsafe fn pop_error(state: *mut ffi::lua_State, err_code: c_int) -> Error {
|
|||
}
|
||||
}
|
||||
|
||||
// Internally uses 4 stack spaces, does not call checkstack
|
||||
pub unsafe fn push_string<S: ?Sized + AsRef<[u8]>>(
|
||||
state: *mut ffi::lua_State,
|
||||
s: &S,
|
||||
) -> Result<()> {
|
||||
protect_lua_closure(state, 0, 1, |state| {
|
||||
let s = s.as_ref();
|
||||
ffi::lua_pushlstring(state, s.as_ptr() as *const c_char, s.len());
|
||||
})
|
||||
}
|
||||
|
||||
// Internally uses 4 stack spaces, does not call checkstack
|
||||
// Internally uses 3 stack spaces, does not call checkstack
|
||||
pub unsafe fn push_userdata<T>(state: *mut ffi::lua_State, t: T) -> Result<()> {
|
||||
let ud = protect_lua_closure(state, 0, 1, move |state| {
|
||||
ffi::lua_newuserdata(state, mem::size_of::<T>()) as *mut T
|
||||
})?;
|
||||
let ud = ffi::safe::lua_newuserdata(state, mem::size_of::<T>())? as *mut T;
|
||||
ptr::write(ud, t);
|
||||
Ok(())
|
||||
}
|
||||
|
|
@ -245,9 +159,9 @@ pub unsafe fn get_userdata<T>(state: *mut ffi::lua_State, index: c_int) -> *mut
|
|||
}
|
||||
|
||||
// Pops the userdata off of the top of the stack and returns it to rust, invalidating the lua
|
||||
// userdata and gives it the special "destructed" userdata metatable. Userdata must not have been
|
||||
// previously invalidated, and this method does not check for this. Uses 1 extra stack space and
|
||||
// does not call checkstack
|
||||
// userdata and gives it the special "destructed" userdata metatable. Userdata must not have been
|
||||
// previously invalidated, and this method does not check for this.
|
||||
// Uses 1 extra stack space and does not call checkstack.
|
||||
pub unsafe fn take_userdata<T>(state: *mut ffi::lua_State) -> T {
|
||||
// We set the metatable of userdata on __gc to a special table with no __gc method and with
|
||||
// metamethods that trigger an error on access. We do this so that it will not be double
|
||||
|
|
@ -261,18 +175,11 @@ pub unsafe fn take_userdata<T>(state: *mut ffi::lua_State) -> T {
|
|||
ptr::read(ud)
|
||||
}
|
||||
|
||||
// Pushes the userdata and attaches a metatable with __gc method
|
||||
// Internally uses 5 stack spaces, does not call checkstack
|
||||
// Pushes the userdata and attaches a metatable with __gc method.
|
||||
// Internally uses 4 stack spaces, does not call checkstack.
|
||||
pub unsafe fn push_gc_userdata<T: Any>(state: *mut ffi::lua_State, t: T) -> Result<()> {
|
||||
push_meta_gc_userdata::<T, T>(state, t)
|
||||
}
|
||||
|
||||
pub unsafe fn push_meta_gc_userdata<MT: Any, T>(state: *mut ffi::lua_State, t: T) -> Result<()> {
|
||||
let ud = protect_lua_closure(state, 0, 1, move |state| {
|
||||
ffi::lua_newuserdata(state, mem::size_of::<T>()) as *mut T
|
||||
})?;
|
||||
ptr::write(ud, t);
|
||||
get_gc_metatable_for::<MT>(state);
|
||||
push_userdata(state, t)?;
|
||||
get_gc_metatable_for::<T>(state);
|
||||
ffi::lua_setmetatable(state, -2);
|
||||
Ok(())
|
||||
}
|
||||
|
|
@ -292,9 +199,9 @@ pub unsafe fn get_gc_userdata<T: Any>(state: *mut ffi::lua_State, index: c_int)
|
|||
ud
|
||||
}
|
||||
|
||||
// Populates the given table with the appropriate members to be a userdata metatable for the given
|
||||
// type. This function takes the given table at the `metatable` index, and adds an appropriate `__gc`
|
||||
// member to it for the given type and a `__metatable` entry to protect the table from script access.
|
||||
// Populates the given table with the appropriate members to be a userdata metatable for the given type.
|
||||
// This function takes the given table at the `metatable` index, and adds an appropriate `__gc` member
|
||||
// to it for the given type and a `__metatable` entry to protect the table from script access.
|
||||
// The function also, if given a `field_getters` or `methods` tables, will create an `__index` metamethod
|
||||
// (capturing previous one) to lookup in `field_getters` first, then `methods` and falling back to the
|
||||
// captured `__index` if no matches found.
|
||||
|
|
@ -307,98 +214,10 @@ pub unsafe fn init_userdata_metatable<T>(
|
|||
field_setters: Option<c_int>,
|
||||
methods: Option<c_int>,
|
||||
) -> Result<()> {
|
||||
// Wrapper to lookup in `field_getters` first, then `methods`, ending original `__index`.
|
||||
// Used only if `field_getters` or `methods` set.
|
||||
unsafe extern "C" fn meta_index_impl(state: *mut ffi::lua_State) -> c_int {
|
||||
// stack: self, key
|
||||
ffi::luaL_checkstack(state, 2, ptr::null());
|
||||
|
||||
// lookup in `field_getters` table
|
||||
if ffi::lua_isnil(state, ffi::lua_upvalueindex(2)) == 0 {
|
||||
ffi::lua_pushvalue(state, -1); // `key` arg
|
||||
if ffi::lua_rawget(state, ffi::lua_upvalueindex(2)) != ffi::LUA_TNIL {
|
||||
ffi::lua_insert(state, -3); // move function
|
||||
ffi::lua_pop(state, 1); // remove `key`
|
||||
ffi::lua_call(state, 1, 1);
|
||||
return 1;
|
||||
}
|
||||
ffi::lua_pop(state, 1); // pop the nil value
|
||||
}
|
||||
// lookup in `methods` table
|
||||
if ffi::lua_isnil(state, ffi::lua_upvalueindex(3)) == 0 {
|
||||
ffi::lua_pushvalue(state, -1); // `key` arg
|
||||
if ffi::lua_rawget(state, ffi::lua_upvalueindex(3)) != ffi::LUA_TNIL {
|
||||
ffi::lua_insert(state, -3);
|
||||
ffi::lua_pop(state, 2);
|
||||
return 1;
|
||||
}
|
||||
ffi::lua_pop(state, 1); // pop the nil value
|
||||
}
|
||||
|
||||
// lookup in `__index`
|
||||
ffi::lua_pushvalue(state, ffi::lua_upvalueindex(1));
|
||||
match ffi::lua_type(state, -1) {
|
||||
ffi::LUA_TNIL => {
|
||||
ffi::lua_pop(state, 1); // pop the nil value
|
||||
let field = ffi::lua_tostring(state, -1);
|
||||
ffi::luaL_error(state, cstr!("attempt to get an unknown field '%s'"), field);
|
||||
}
|
||||
ffi::LUA_TTABLE => {
|
||||
ffi::lua_insert(state, -2);
|
||||
ffi::lua_gettable(state, -2);
|
||||
}
|
||||
ffi::LUA_TFUNCTION => {
|
||||
ffi::lua_insert(state, -3);
|
||||
ffi::lua_call(state, 2, 1);
|
||||
}
|
||||
_ => unreachable!(),
|
||||
}
|
||||
|
||||
1
|
||||
}
|
||||
|
||||
// Similar to `meta_index_impl`, checks `field_setters` table first, then `__newindex` metamethod.
|
||||
// Used only if `field_setters` set.
|
||||
unsafe extern "C" fn meta_newindex_impl(state: *mut ffi::lua_State) -> c_int {
|
||||
// stack: self, key, value
|
||||
ffi::luaL_checkstack(state, 2, ptr::null());
|
||||
|
||||
// lookup in `field_setters` table
|
||||
ffi::lua_pushvalue(state, -2); // `key` arg
|
||||
if ffi::lua_rawget(state, ffi::lua_upvalueindex(2)) != ffi::LUA_TNIL {
|
||||
ffi::lua_remove(state, -3); // remove `key`
|
||||
ffi::lua_insert(state, -3); // move function
|
||||
ffi::lua_call(state, 2, 0);
|
||||
return 0;
|
||||
}
|
||||
ffi::lua_pop(state, 1); // pop the nil value
|
||||
|
||||
// lookup in `__newindex`
|
||||
ffi::lua_pushvalue(state, ffi::lua_upvalueindex(1));
|
||||
match ffi::lua_type(state, -1) {
|
||||
ffi::LUA_TNIL => {
|
||||
ffi::lua_pop(state, 1); // pop the nil value
|
||||
let field = ffi::lua_tostring(state, -2);
|
||||
ffi::luaL_error(state, cstr!("attempt to set an unknown field '%s'"), field);
|
||||
}
|
||||
ffi::LUA_TTABLE => {
|
||||
ffi::lua_insert(state, -3);
|
||||
ffi::lua_settable(state, -3);
|
||||
}
|
||||
ffi::LUA_TFUNCTION => {
|
||||
ffi::lua_insert(state, -4);
|
||||
ffi::lua_call(state, 3, 0);
|
||||
}
|
||||
_ => unreachable!(),
|
||||
}
|
||||
|
||||
0
|
||||
}
|
||||
|
||||
ffi::lua_pushvalue(state, metatable);
|
||||
|
||||
if field_getters.is_some() || methods.is_some() {
|
||||
push_string(state, "__index")?;
|
||||
ffi::safe::lua_pushstring(state, "__index")?;
|
||||
|
||||
ffi::lua_pushvalue(state, -1);
|
||||
let index_type = ffi::lua_rawget(state, -3);
|
||||
|
|
@ -411,49 +230,35 @@ pub unsafe fn init_userdata_metatable<T>(
|
|||
ffi::lua_pushnil(state);
|
||||
}
|
||||
}
|
||||
protect_lua_closure(state, 3, 1, |state| {
|
||||
ffi::lua_pushcclosure(state, meta_index_impl, 3);
|
||||
})?;
|
||||
ffi::safe::lua_pushcclosure(state, ffi::safe::meta_index_impl, 3)?;
|
||||
}
|
||||
_ => mlua_panic!("improper __index type {}", index_type),
|
||||
}
|
||||
|
||||
protect_lua_closure(state, 3, 1, |state| {
|
||||
ffi::lua_rawset(state, -3);
|
||||
})?;
|
||||
ffi::safe::lua_rawset(state, -3)?;
|
||||
}
|
||||
|
||||
if let Some(field_setters) = field_setters {
|
||||
push_string(state, "__newindex")?;
|
||||
ffi::safe::lua_pushstring(state, "__newindex")?;
|
||||
|
||||
ffi::lua_pushvalue(state, -1);
|
||||
let newindex_type = ffi::lua_rawget(state, -3);
|
||||
match newindex_type {
|
||||
ffi::LUA_TNIL | ffi::LUA_TTABLE | ffi::LUA_TFUNCTION => {
|
||||
ffi::lua_pushvalue(state, field_setters);
|
||||
protect_lua_closure(state, 2, 1, |state| {
|
||||
ffi::lua_pushcclosure(state, meta_newindex_impl, 2);
|
||||
})?;
|
||||
ffi::safe::lua_pushcclosure(state, ffi::safe::meta_newindex_impl, 2)?;
|
||||
}
|
||||
_ => mlua_panic!("improper __newindex type {}", newindex_type),
|
||||
}
|
||||
|
||||
protect_lua_closure(state, 3, 1, |state| {
|
||||
ffi::lua_rawset(state, -3);
|
||||
})?;
|
||||
ffi::safe::lua_rawset(state, -3)?;
|
||||
}
|
||||
|
||||
push_string(state, "__gc")?;
|
||||
ffi::lua_pushcfunction(state, userdata_destructor::<T>);
|
||||
protect_lua_closure(state, 3, 1, |state| {
|
||||
ffi::lua_rawset(state, -3);
|
||||
})?;
|
||||
ffi::safe::lua_pushrclosure(state, userdata_destructor::<T>, 0)?;
|
||||
ffi::safe::lua_rawsetfield(state, -2, "__gc")?;
|
||||
|
||||
push_string(state, "__metatable")?;
|
||||
ffi::lua_pushboolean(state, 0);
|
||||
protect_lua_closure(state, 3, 1, |state| {
|
||||
ffi::lua_rawset(state, -3);
|
||||
})?;
|
||||
ffi::safe::lua_rawsetfield(state, -2, "__metatable")?;
|
||||
|
||||
ffi::lua_pop(state, 1);
|
||||
|
||||
|
|
@ -479,29 +284,11 @@ pub unsafe extern "C" fn userdata_destructor<T>(state: *mut ffi::lua_State) -> c
|
|||
// This function uses some of the bottom of the stack for error handling, the given callback will be
|
||||
// given the number of arguments available as an argument, and should return the number of returns
|
||||
// as normal, but cannot assume that the arguments available start at 0.
|
||||
pub unsafe fn callback_error<R, F>(state: *mut ffi::lua_State, f: F) -> R
|
||||
pub unsafe fn callback_error<F>(state: *mut ffi::lua_State, f: F) -> c_int
|
||||
where
|
||||
F: FnOnce(c_int) -> Result<R>,
|
||||
F: FnOnce(c_int) -> Result<c_int>,
|
||||
{
|
||||
let nargs = ffi::lua_gettop(state);
|
||||
|
||||
// We need one extra stack space to store preallocated memory, and at least 3 stack spaces
|
||||
// overall for handling error metatables
|
||||
let extra_stack = if nargs < 3 { 3 - nargs } else { 1 };
|
||||
ffi::luaL_checkstack(
|
||||
state,
|
||||
extra_stack,
|
||||
cstr!("not enough stack space for callback error handling"),
|
||||
);
|
||||
|
||||
// We cannot shadow rust errors with Lua ones, we pre-allocate enough memory to store a wrapped
|
||||
// error or panic *before* we proceed.
|
||||
let ud = ffi::lua_newuserdata(
|
||||
state,
|
||||
mem::size_of::<WrappedError>().max(mem::size_of::<WrappedPanic>()),
|
||||
);
|
||||
ffi::lua_rotate(state, 1, 1);
|
||||
|
||||
let nargs = ffi::lua_gettop(state) - 1;
|
||||
match catch_unwind(AssertUnwindSafe(|| f(nargs))) {
|
||||
Ok(Ok(r)) => {
|
||||
ffi::lua_remove(state, 1);
|
||||
|
|
@ -509,68 +296,54 @@ where
|
|||
}
|
||||
Ok(Err(err)) => {
|
||||
ffi::lua_settop(state, 1);
|
||||
ptr::write(ud as *mut WrappedError, WrappedError(err));
|
||||
let error_ud = ffi::lua_touserdata(state, 1);
|
||||
ptr::write(error_ud as *mut WrappedError, WrappedError(err));
|
||||
get_gc_metatable_for::<WrappedError>(state);
|
||||
ffi::lua_setmetatable(state, -2);
|
||||
ffi::lua_error(state)
|
||||
-1
|
||||
}
|
||||
Err(p) => {
|
||||
ffi::lua_settop(state, 1);
|
||||
ptr::write(ud as *mut WrappedPanic, WrappedPanic(Some(p)));
|
||||
let error_ud = ffi::lua_touserdata(state, 1);
|
||||
ptr::write(error_ud as *mut WrappedPanic, WrappedPanic(Some(p)));
|
||||
get_gc_metatable_for::<WrappedPanic>(state);
|
||||
ffi::lua_setmetatable(state, -2);
|
||||
ffi::lua_error(state)
|
||||
-1
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
// Takes an error at the top of the stack, and if it is a WrappedError, converts it to an
|
||||
// Error::CallbackError with a traceback, if it is some lua type, prints the error along with a
|
||||
// traceback, and if it is a WrappedPanic, does not modify it. This function does its best to avoid
|
||||
// triggering another error and shadowing previous rust errors, but it may trigger Lua errors that
|
||||
// shadow rust errors under certain memory conditions. This function ensures that such behavior
|
||||
// will *never* occur with a rust panic, however.
|
||||
pub unsafe extern "C" fn error_traceback(state: *mut ffi::lua_State) -> c_int {
|
||||
// I believe luaL_traceback requires this much free stack to not error.
|
||||
const LUA_TRACEBACK_STACK: c_int = 11;
|
||||
#[no_mangle]
|
||||
pub unsafe extern "C" fn wrapped_error_traceback(
|
||||
state: *mut ffi::lua_State,
|
||||
error_idx: c_int,
|
||||
error_ud: *mut c_void,
|
||||
has_traceback: c_int,
|
||||
) {
|
||||
let error = mlua_expect!(
|
||||
get_wrapped_error(state, error_idx).as_ref(),
|
||||
"cannot get <WrappedError>"
|
||||
);
|
||||
let traceback = if has_traceback != 0 {
|
||||
let traceback = to_string(state, -1);
|
||||
ffi::lua_pop(state, 1);
|
||||
traceback
|
||||
} else {
|
||||
"<not enough stack space for traceback>".to_owned()
|
||||
};
|
||||
|
||||
if ffi::lua_checkstack(state, 2) == 0 {
|
||||
// If we don't have enough stack space to even check the error type, do nothing so we don't
|
||||
// risk shadowing a rust panic.
|
||||
} else if let Some(error) = get_wrapped_error(state, -1).as_ref() {
|
||||
// lua_newuserdata and luaL_traceback may error, but nothing that implements Drop should be
|
||||
// on the rust stack at this time.
|
||||
let ud = ffi::lua_newuserdata(state, mem::size_of::<WrappedError>()) as *mut WrappedError;
|
||||
let traceback = if ffi::lua_checkstack(state, LUA_TRACEBACK_STACK) != 0 {
|
||||
ffi::luaL_traceback(state, state, ptr::null(), 0);
|
||||
let error = error.clone();
|
||||
ffi::lua_remove(state, -2); // Remove original error
|
||||
|
||||
let traceback = to_string(state, -1).into_owned();
|
||||
ffi::lua_pop(state, 1);
|
||||
traceback
|
||||
} else {
|
||||
"<not enough stack space for traceback>".to_owned()
|
||||
};
|
||||
|
||||
let error = error.clone();
|
||||
ffi::lua_remove(state, -2);
|
||||
|
||||
ptr::write(
|
||||
ud,
|
||||
WrappedError(Error::CallbackError {
|
||||
traceback,
|
||||
cause: Arc::new(error),
|
||||
}),
|
||||
);
|
||||
get_gc_metatable_for::<WrappedError>(state);
|
||||
ffi::lua_setmetatable(state, -2);
|
||||
} else if get_gc_userdata::<WrappedPanic>(state, -1).is_null()
|
||||
&& ffi::lua_checkstack(state, LUA_TRACEBACK_STACK) != 0
|
||||
{
|
||||
let s = ffi::luaL_tolstring(state, -1, ptr::null_mut());
|
||||
ffi::luaL_traceback(state, state, s, 0);
|
||||
ffi::lua_remove(state, -2);
|
||||
}
|
||||
1
|
||||
ptr::write(
|
||||
error_ud as *mut WrappedError,
|
||||
WrappedError(Error::CallbackError {
|
||||
traceback,
|
||||
cause: Arc::new(error),
|
||||
}),
|
||||
);
|
||||
get_gc_metatable_for::<WrappedError>(state);
|
||||
ffi::lua_setmetatable(state, -2);
|
||||
}
|
||||
|
||||
// Does not call lua_checkstack, uses 1 stack space.
|
||||
|
|
@ -602,7 +375,8 @@ pub unsafe fn push_wrapped_error(state: *mut ffi::lua_State, err: Error) -> Resu
|
|||
}
|
||||
|
||||
// Checks if the value at the given index is a WrappedError, and if it is returns a pointer to it,
|
||||
// otherwise returns null. Uses 2 stack spaces and does not call lua_checkstack.
|
||||
// otherwise returns null.
|
||||
// Uses 2 stack spaces and does not call checkstack.
|
||||
pub unsafe fn get_wrapped_error(state: *mut ffi::lua_State, index: c_int) -> *const Error {
|
||||
let ud = get_gc_userdata::<WrappedError>(state, index);
|
||||
if ud.is_null() {
|
||||
|
|
@ -611,11 +385,19 @@ pub unsafe fn get_wrapped_error(state: *mut ffi::lua_State, index: c_int) -> *co
|
|||
&(*ud).0
|
||||
}
|
||||
|
||||
#[no_mangle]
|
||||
pub unsafe extern "C" fn mlua_get_wrapped_error(
|
||||
state: *mut ffi::lua_State,
|
||||
index: c_int,
|
||||
) -> *const c_void {
|
||||
get_wrapped_error(state, index) as *const c_void
|
||||
}
|
||||
|
||||
// Initialize the internal (with __gc) metatable for a type T
|
||||
pub unsafe fn init_gc_metatable_for<T: Any>(
|
||||
state: *mut ffi::lua_State,
|
||||
customize_fn: Option<fn(*mut ffi::lua_State)>,
|
||||
) {
|
||||
customize_fn: Option<fn(*mut ffi::lua_State) -> Result<()>>,
|
||||
) -> Result<*const u8> {
|
||||
let type_id = TypeId::of::<T>();
|
||||
|
||||
let ref_addr = {
|
||||
|
|
@ -628,21 +410,21 @@ pub unsafe fn init_gc_metatable_for<T: Any>(
|
|||
&mt_cache[&type_id] as *const u8
|
||||
};
|
||||
|
||||
ffi::lua_newtable(state);
|
||||
ffi::safe::lua_createtable(state, 0, 3)?;
|
||||
|
||||
ffi::lua_pushstring(state, cstr!("__gc"));
|
||||
ffi::lua_pushcfunction(state, userdata_destructor::<T>);
|
||||
ffi::lua_rawset(state, -3);
|
||||
ffi::safe::lua_pushrclosure(state, userdata_destructor::<T>, 0)?;
|
||||
ffi::safe::lua_rawsetfield(state, -2, "__gc")?;
|
||||
|
||||
ffi::lua_pushstring(state, cstr!("__metatable"));
|
||||
ffi::lua_pushboolean(state, 0);
|
||||
ffi::lua_rawset(state, -3);
|
||||
ffi::safe::lua_rawsetfield(state, -2, "__metatable")?;
|
||||
|
||||
if let Some(f) = customize_fn {
|
||||
f(state)
|
||||
f(state)?;
|
||||
}
|
||||
|
||||
ffi::lua_rawsetp(state, ffi::LUA_REGISTRYINDEX, ref_addr as *mut c_void);
|
||||
ffi::safe::lua_rawsetp(state, ffi::LUA_REGISTRYINDEX, ref_addr as *mut c_void)?;
|
||||
|
||||
Ok(ref_addr)
|
||||
}
|
||||
|
||||
pub unsafe fn get_gc_metatable_for<T: Any>(state: *mut ffi::lua_State) {
|
||||
|
|
@ -651,19 +433,21 @@ pub unsafe fn get_gc_metatable_for<T: Any>(state: *mut ffi::lua_State) {
|
|||
let mt_cache = mlua_expect!(METATABLE_CACHE.lock(), "cannot lock metatable cache");
|
||||
mlua_expect!(mt_cache.get(&type_id), "gc metatable does not exist") as *const u8
|
||||
};
|
||||
ffi::lua_rawgetp(state, ffi::LUA_REGISTRYINDEX, ref_addr as *mut c_void);
|
||||
ffi::lua_rawgetp(state, ffi::LUA_REGISTRYINDEX, ref_addr as *const c_void);
|
||||
}
|
||||
|
||||
// Initialize the error, panic, and destructed userdata metatables.
|
||||
pub unsafe fn init_error_registry(state: *mut ffi::lua_State) {
|
||||
// Returns address of WrappedError and WrappedPanic metatables in Lua registry.
|
||||
pub unsafe fn init_error_registry(state: *mut ffi::lua_State) -> Result<(*const u8, *const u8)> {
|
||||
assert_stack(state, 8);
|
||||
|
||||
// Create error and panic metatables
|
||||
|
||||
unsafe extern "C" fn error_tostring(state: *mut ffi::lua_State) -> c_int {
|
||||
let err_buf = callback_error(state, |_| {
|
||||
callback_error(state, |_| {
|
||||
check_stack(state, 3)?;
|
||||
if let Some(error) = get_wrapped_error(state, -1).as_ref() {
|
||||
|
||||
let err_buf = if let Some(error) = get_wrapped_error(state, -1).as_ref() {
|
||||
ffi::lua_pushlightuserdata(
|
||||
state,
|
||||
&ERROR_PRINT_BUFFER_KEY as *const u8 as *mut c_void,
|
||||
|
|
@ -700,146 +484,149 @@ pub unsafe fn init_error_registry(state: *mut ffi::lua_State) {
|
|||
} else {
|
||||
// I'm not sure whether this is possible to trigger without bugs in mlua?
|
||||
Err(Error::UserDataTypeMismatch)
|
||||
}
|
||||
});
|
||||
}?;
|
||||
|
||||
ffi::lua_pushlstring(
|
||||
state,
|
||||
(*err_buf).as_ptr() as *const c_char,
|
||||
(*err_buf).len(),
|
||||
);
|
||||
(*err_buf).clear();
|
||||
1
|
||||
ffi::safe::lua_pushstring(state, &*err_buf)?;
|
||||
(*err_buf).clear();
|
||||
|
||||
Ok(1)
|
||||
})
|
||||
}
|
||||
|
||||
init_gc_metatable_for::<WrappedError>(
|
||||
let wrapped_error_key = init_gc_metatable_for::<WrappedError>(
|
||||
state,
|
||||
Some(|state| {
|
||||
ffi::lua_pushstring(state, cstr!("__tostring"));
|
||||
ffi::lua_pushcfunction(state, error_tostring);
|
||||
ffi::lua_rawset(state, -3);
|
||||
ffi::safe::lua_pushrclosure(state, error_tostring, 0)?;
|
||||
ffi::safe::lua_rawsetfield(state, -2, "__tostring")
|
||||
}),
|
||||
);
|
||||
)?;
|
||||
|
||||
init_gc_metatable_for::<WrappedPanic>(
|
||||
let wrapped_panic_key = init_gc_metatable_for::<WrappedPanic>(
|
||||
state,
|
||||
Some(|state| {
|
||||
ffi::lua_pushstring(state, cstr!("__tostring"));
|
||||
ffi::lua_pushcfunction(state, error_tostring);
|
||||
ffi::lua_rawset(state, -3);
|
||||
ffi::safe::lua_pushrclosure(state, error_tostring, 0)?;
|
||||
ffi::safe::lua_rawsetfield(state, -2, "__tostring")
|
||||
}),
|
||||
);
|
||||
)?;
|
||||
|
||||
// Create destructed userdata metatable
|
||||
|
||||
unsafe extern "C" fn destructed_error(state: *mut ffi::lua_State) -> c_int {
|
||||
ffi::luaL_checkstack(state, 2, ptr::null());
|
||||
let ud = ffi::lua_newuserdata(state, mem::size_of::<WrappedError>()) as *mut WrappedError;
|
||||
ptr::write(ud, WrappedError(Error::CallbackDestructed));
|
||||
get_gc_metatable_for::<WrappedError>(state);
|
||||
ffi::lua_setmetatable(state, -2);
|
||||
ffi::lua_error(state)
|
||||
callback_error(state, |_| {
|
||||
check_stack(state, 3)?;
|
||||
let ud = ffi::safe::lua_newuserdata(state, mem::size_of::<WrappedError>())?
|
||||
as *mut WrappedError;
|
||||
ptr::write(ud, WrappedError(Error::CallbackDestructed));
|
||||
get_gc_metatable_for::<WrappedError>(state);
|
||||
ffi::lua_setmetatable(state, -2);
|
||||
Ok(-1) // to trigger lua_error
|
||||
})
|
||||
}
|
||||
|
||||
ffi::lua_pushlightuserdata(
|
||||
state,
|
||||
&DESTRUCTED_USERDATA_METATABLE as *const u8 as *mut c_void,
|
||||
);
|
||||
ffi::lua_newtable(state);
|
||||
ffi::safe::lua_createtable(state, 0, 26)?;
|
||||
|
||||
ffi::safe::lua_pushrclosure(state, destructed_error, 0)?;
|
||||
for &method in &[
|
||||
cstr!("__add"),
|
||||
cstr!("__sub"),
|
||||
cstr!("__mul"),
|
||||
cstr!("__div"),
|
||||
cstr!("__mod"),
|
||||
cstr!("__pow"),
|
||||
cstr!("__unm"),
|
||||
"__add",
|
||||
"__sub",
|
||||
"__mul",
|
||||
"__div",
|
||||
"__mod",
|
||||
"__pow",
|
||||
"__unm",
|
||||
#[cfg(any(feature = "lua54", feature = "lua53"))]
|
||||
cstr!("__idiv"),
|
||||
"__idiv",
|
||||
#[cfg(any(feature = "lua54", feature = "lua53"))]
|
||||
cstr!("__band"),
|
||||
"__band",
|
||||
#[cfg(any(feature = "lua54", feature = "lua53"))]
|
||||
cstr!("__bor"),
|
||||
"__bor",
|
||||
#[cfg(any(feature = "lua54", feature = "lua53"))]
|
||||
cstr!("__bxor"),
|
||||
"__bxor",
|
||||
#[cfg(any(feature = "lua54", feature = "lua53"))]
|
||||
cstr!("__bnot"),
|
||||
"__bnot",
|
||||
#[cfg(any(feature = "lua54", feature = "lua53"))]
|
||||
cstr!("__shl"),
|
||||
"__shl",
|
||||
#[cfg(any(feature = "lua54", feature = "lua53"))]
|
||||
cstr!("__shr"),
|
||||
cstr!("__concat"),
|
||||
cstr!("__len"),
|
||||
cstr!("__eq"),
|
||||
cstr!("__lt"),
|
||||
cstr!("__le"),
|
||||
cstr!("__index"),
|
||||
cstr!("__newindex"),
|
||||
cstr!("__call"),
|
||||
cstr!("__tostring"),
|
||||
"__shr",
|
||||
"__concat",
|
||||
"__len",
|
||||
"__eq",
|
||||
"__lt",
|
||||
"__le",
|
||||
"__index",
|
||||
"__newindex",
|
||||
"__call",
|
||||
"__tostring",
|
||||
#[cfg(any(feature = "lua54", feature = "lua53", feature = "lua52"))]
|
||||
cstr!("__pairs"),
|
||||
"__pairs",
|
||||
#[cfg(any(feature = "lua53", feature = "lua52"))]
|
||||
cstr!("__ipairs"),
|
||||
"__ipairs",
|
||||
#[cfg(feature = "lua54")]
|
||||
cstr!("__close"),
|
||||
"__close",
|
||||
] {
|
||||
ffi::lua_pushstring(state, method);
|
||||
ffi::lua_pushcfunction(state, destructed_error);
|
||||
ffi::lua_rawset(state, -3);
|
||||
ffi::lua_pushvalue(state, -1);
|
||||
ffi::safe::lua_rawsetfield(state, -3, method)?;
|
||||
}
|
||||
ffi::lua_pop(state, 1);
|
||||
|
||||
ffi::lua_rawset(state, ffi::LUA_REGISTRYINDEX);
|
||||
ffi::safe::lua_rawset(state, ffi::LUA_REGISTRYINDEX)?;
|
||||
|
||||
// Create error print buffer
|
||||
|
||||
ffi::lua_pushlightuserdata(state, &ERROR_PRINT_BUFFER_KEY as *const u8 as *mut c_void);
|
||||
|
||||
let ud = ffi::lua_newuserdata(state, mem::size_of::<String>()) as *mut String;
|
||||
let ud = ffi::safe::lua_newuserdata(state, mem::size_of::<String>())? as *mut String;
|
||||
ptr::write(ud, String::new());
|
||||
|
||||
ffi::lua_newtable(state);
|
||||
ffi::lua_pushstring(state, cstr!("__gc"));
|
||||
ffi::lua_pushcfunction(state, userdata_destructor::<String>);
|
||||
ffi::lua_rawset(state, -3);
|
||||
ffi::safe::lua_createtable(state, 0, 1)?;
|
||||
ffi::safe::lua_pushrclosure(state, userdata_destructor::<String>, 0)?;
|
||||
ffi::safe::lua_rawsetfield(state, -2, "__gc")?;
|
||||
|
||||
ffi::lua_setmetatable(state, -2);
|
||||
|
||||
ffi::lua_rawset(state, ffi::LUA_REGISTRYINDEX);
|
||||
ffi::safe::lua_rawset(state, ffi::LUA_REGISTRYINDEX)?;
|
||||
|
||||
Ok((wrapped_error_key, wrapped_panic_key))
|
||||
}
|
||||
|
||||
struct WrappedError(pub Error);
|
||||
pub(crate) struct WrappedError(pub Error);
|
||||
pub(crate) struct WrappedPanic(pub Option<Box<dyn Any + Send + 'static>>);
|
||||
|
||||
// Converts the given lua value to a string in a reasonable format without causing a Lua error or
|
||||
// panicking.
|
||||
unsafe fn to_string<'a>(state: *mut ffi::lua_State, index: c_int) -> Cow<'a, str> {
|
||||
unsafe fn to_string(state: *mut ffi::lua_State, index: c_int) -> String {
|
||||
match ffi::lua_type(state, index) {
|
||||
ffi::LUA_TNONE => "<none>".into(),
|
||||
ffi::LUA_TNIL => "<nil>".into(),
|
||||
ffi::LUA_TBOOLEAN => (ffi::lua_toboolean(state, index) != 1).to_string().into(),
|
||||
ffi::LUA_TNONE => "<none>".to_string(),
|
||||
ffi::LUA_TNIL => "<nil>".to_string(),
|
||||
ffi::LUA_TBOOLEAN => (ffi::lua_toboolean(state, index) != 1).to_string(),
|
||||
ffi::LUA_TLIGHTUSERDATA => {
|
||||
format!("<lightuserdata {:?}>", ffi::lua_topointer(state, index)).into()
|
||||
format!("<lightuserdata {:?}>", ffi::lua_topointer(state, index))
|
||||
}
|
||||
ffi::LUA_TNUMBER => {
|
||||
let mut isint = 0;
|
||||
let i = ffi::lua_tointegerx(state, -1, &mut isint);
|
||||
if isint == 0 {
|
||||
ffi::lua_tonumber(state, index).to_string().into()
|
||||
ffi::lua_tonumber(state, index).to_string()
|
||||
} else {
|
||||
i.to_string().into()
|
||||
i.to_string()
|
||||
}
|
||||
}
|
||||
ffi::LUA_TSTRING => {
|
||||
let mut size = 0;
|
||||
// This will not trigger a 'm' error, because the reference is guaranteed to be of
|
||||
// string type
|
||||
let data = ffi::lua_tolstring(state, index, &mut size);
|
||||
String::from_utf8_lossy(slice::from_raw_parts(data as *const u8, size))
|
||||
String::from_utf8_lossy(slice::from_raw_parts(data as *const u8, size)).into_owned()
|
||||
}
|
||||
ffi::LUA_TTABLE => format!("<table {:?}>", ffi::lua_topointer(state, index)).into(),
|
||||
ffi::LUA_TFUNCTION => format!("<function {:?}>", ffi::lua_topointer(state, index)).into(),
|
||||
ffi::LUA_TUSERDATA => format!("<userdata {:?}>", ffi::lua_topointer(state, index)).into(),
|
||||
ffi::LUA_TTHREAD => format!("<thread {:?}>", ffi::lua_topointer(state, index)).into(),
|
||||
_ => "<unknown>".into(),
|
||||
ffi::LUA_TTABLE => format!("<table {:?}>", ffi::lua_topointer(state, index)),
|
||||
ffi::LUA_TFUNCTION => format!("<function {:?}>", ffi::lua_topointer(state, index)),
|
||||
ffi::LUA_TUSERDATA => format!("<userdata {:?}>", ffi::lua_topointer(state, index)),
|
||||
ffi::LUA_TTHREAD => format!("<thread {:?}>", ffi::lua_topointer(state, index)),
|
||||
_ => "<unknown>".to_string(),
|
||||
}
|
||||
}
|
||||
|
||||
|
|
|
|||
|
|
@ -1,3 +1,4 @@
|
|||
// OK
|
||||
use std::iter::{self, FromIterator};
|
||||
use std::{slice, str, vec};
|
||||
|
||||
|
|
@ -8,7 +9,6 @@ use {
|
|||
};
|
||||
|
||||
use crate::error::{Error, Result};
|
||||
use crate::ffi;
|
||||
use crate::function::Function;
|
||||
use crate::lua::Lua;
|
||||
use crate::string::String;
|
||||
|
|
@ -96,8 +96,8 @@ impl<'lua> PartialEq for Value<'lua> {
|
|||
(Value::Boolean(a), Value::Boolean(b)) => a == b,
|
||||
(Value::LightUserData(a), Value::LightUserData(b)) => a == b,
|
||||
(Value::Integer(a), Value::Integer(b)) => *a == *b,
|
||||
(Value::Integer(a), Value::Number(b)) => *a as ffi::lua_Number == *b,
|
||||
(Value::Number(a), Value::Integer(b)) => *a == *b as ffi::lua_Number,
|
||||
(Value::Integer(a), Value::Number(b)) => *a as Number == *b,
|
||||
(Value::Number(a), Value::Integer(b)) => *a == *b as Number,
|
||||
(Value::Number(a), Value::Number(b)) => *a == *b,
|
||||
(Value::String(a), Value::String(b)) => a == b,
|
||||
(Value::Table(a), Value::Table(b)) => a == b,
|
||||
|
|
|
|||
|
|
@ -221,6 +221,7 @@ fn test_coercion() -> Result<()> {
|
|||
int = 123
|
||||
str = "123"
|
||||
num = 123.0
|
||||
func = function() end
|
||||
"#,
|
||||
)
|
||||
.exec()?;
|
||||
|
|
@ -229,6 +230,7 @@ fn test_coercion() -> Result<()> {
|
|||
assert_eq!(globals.get::<_, String>("int")?, "123");
|
||||
assert_eq!(globals.get::<_, i32>("str")?, 123);
|
||||
assert_eq!(globals.get::<_, i32>("num")?, 123);
|
||||
assert!(globals.get::<_, String>("func").is_err());
|
||||
|
||||
Ok(())
|
||||
}
|
||||
|
|
|
|||
Loading…
Reference in New Issue