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21 changed files with 1046 additions and 203 deletions

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@ -1,3 +1,2 @@
[build]
rustflags = ["--cfg", "tokio_unstable"]
rustdocflags = ["--cfg", "tokio_unstable"]

572
Cargo.lock generated
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version = "9.0.6"
source = "registry+https://github.com/rust-lang/crates.io-index"
checksum = "6b2bf58be11fc9414104c6d3a2e464163db5ef74b12296bda593cac37b6e4777"
dependencies = [
"anyhow",
"cargo_metadata",
"derive_builder",
"regex",
"rustc_version",
"rustversion",
"vergen-lib",
]
[[package]]
name = "vergen-git2"
version = "1.0.7"
source = "registry+https://github.com/rust-lang/crates.io-index"
checksum = "4f6ee511ec45098eabade8a0750e76eec671e7fb2d9360c563911336bea9cac1"
dependencies = [
"anyhow",
"derive_builder",
"git2",
"rustversion",
"time",
"vergen",
"vergen-lib",
]
[[package]]
name = "vergen-lib"
version = "0.1.6"
source = "registry+https://github.com/rust-lang/crates.io-index"
checksum = "9b07e6010c0f3e59fcb164e0163834597da68d1f864e2b8ca49f74de01e9c166"
dependencies = [
"anyhow",
"derive_builder",
"rustversion",
]
[[package]]
name = "want"
version = "0.3.1"
@ -1682,6 +2128,15 @@ version = "0.11.1+wasi-snapshot-preview1"
source = "registry+https://github.com/rust-lang/crates.io-index"
checksum = "ccf3ec651a847eb01de73ccad15eb7d99f80485de043efb2f370cd654f4ea44b"
[[package]]
name = "wasi"
version = "0.14.2+wasi-0.2.4"
source = "registry+https://github.com/rust-lang/crates.io-index"
checksum = "9683f9a5a998d873c0d21fcbe3c083009670149a8fab228644b8bd36b2c48cb3"
dependencies = [
"wit-bindgen-rt",
]
[[package]]
name = "which"
version = "8.0.0"
@ -1876,6 +2331,45 @@ version = "0.0.19"
source = "registry+https://github.com/rust-lang/crates.io-index"
checksum = "d135d17ab770252ad95e9a872d365cf3090e3be864a34ab46f48555993efc904"
[[package]]
name = "wit-bindgen-rt"
version = "0.39.0"
source = "registry+https://github.com/rust-lang/crates.io-index"
checksum = "6f42320e61fe2cfd34354ecb597f86f413484a798ba44a8ca1165c58d42da6c1"
dependencies = [
"bitflags",
]
[[package]]
name = "writeable"
version = "0.6.1"
source = "registry+https://github.com/rust-lang/crates.io-index"
checksum = "ea2f10b9bb0928dfb1b42b65e1f9e36f7f54dbdf08457afefb38afcdec4fa2bb"
[[package]]
name = "yoke"
version = "0.8.0"
source = "registry+https://github.com/rust-lang/crates.io-index"
checksum = "5f41bb01b8226ef4bfd589436a297c53d118f65921786300e427be8d487695cc"
dependencies = [
"serde",
"stable_deref_trait",
"yoke-derive",
"zerofrom",
]
[[package]]
name = "yoke-derive"
version = "0.8.0"
source = "registry+https://github.com/rust-lang/crates.io-index"
checksum = "38da3c9736e16c5d3c8c597a9aaa5d1fa565d0532ae05e27c24aa62fb32c0ab6"
dependencies = [
"proc-macro2",
"quote",
"syn",
"synstructure",
]
[[package]]
name = "zerocopy"
version = "0.8.26"
@ -1895,3 +2389,57 @@ dependencies = [
"quote",
"syn",
]
[[package]]
name = "zerofrom"
version = "0.1.6"
source = "registry+https://github.com/rust-lang/crates.io-index"
checksum = "50cc42e0333e05660c3587f3bf9d0478688e15d870fab3346451ce7f8c9fbea5"
dependencies = [
"zerofrom-derive",
]
[[package]]
name = "zerofrom-derive"
version = "0.1.6"
source = "registry+https://github.com/rust-lang/crates.io-index"
checksum = "d71e5d6e06ab090c67b5e44993ec16b72dcbaabc526db883a360057678b48502"
dependencies = [
"proc-macro2",
"quote",
"syn",
"synstructure",
]
[[package]]
name = "zerotrie"
version = "0.2.2"
source = "registry+https://github.com/rust-lang/crates.io-index"
checksum = "36f0bbd478583f79edad978b407914f61b2972f5af6fa089686016be8f9af595"
dependencies = [
"displaydoc",
"yoke",
"zerofrom",
]
[[package]]
name = "zerovec"
version = "0.11.2"
source = "registry+https://github.com/rust-lang/crates.io-index"
checksum = "4a05eb080e015ba39cc9e23bbe5e7fb04d5fb040350f99f34e338d5fdd294428"
dependencies = [
"yoke",
"zerofrom",
"zerovec-derive",
]
[[package]]
name = "zerovec-derive"
version = "0.11.1"
source = "registry+https://github.com/rust-lang/crates.io-index"
checksum = "5b96237efa0c878c64bd89c436f661be4e46b2f3eff1ebb976f7ef2321d2f58f"
dependencies = [
"proc-macro2",
"quote",
"syn",
]

View File

@ -1,4 +1,5 @@
[workspace]
resolver = "3"
members = [
"crates/lb",
"crates/luaffi",
@ -8,23 +9,38 @@ members = [
"crates/luajit-sys",
]
[workspace.package]
version = "0.0.1"
edition = "2024"
license = "MIT"
authors = ["luaneko <lumi@lua.re>"]
homepage = "https://git.lua.re/luaneko/luby/"
repository = "https://git.lua.re/luaneko/luby/"
[package]
name = "luby"
version.workspace = true
edition.workspace = true
license.workspace = true
authors.workspace = true
homepage.workspace = true
repository.workspace = true
[profile]
dev.panic = "abort"
release.panic = "abort"
[package]
name = "luby"
version = "0.1.0"
edition = "2024"
[dependencies]
clap = { version = "4.5.40", features = ["derive"] }
clap = { version = "4.5.40", features = ["derive", "env"] }
console-subscriber = "0.4.1"
lb = { version = "0.1.0", path = "crates/lb" }
luajit = { version = "0.1.0", path = "crates/luajit", features = ["runtime"] }
lb = { path = "crates/lb" }
luajit = { path = "crates/luajit", features = ["runtime"] }
mimalloc = "0.1.47"
owo-colors = "4.2.1"
sysexits = "0.9.0"
tokio = { version = "1.45.1", features = ["full", "tracing"] }
tracing = "0.1.41"
tracing-subscriber = "0.3.19"
[build-dependencies]
vergen-git2 = { version = "1.0.7", features = ["cargo", "rustc"] }

13
build.rs Normal file
View File

@ -0,0 +1,13 @@
use vergen_git2::{CargoBuilder, Emitter, Git2Builder, RustcBuilder};
fn main() {
Emitter::default()
.add_instructions(&CargoBuilder::all_cargo().unwrap())
.unwrap()
.add_instructions(&Git2Builder::all_git().unwrap())
.unwrap()
.add_instructions(&RustcBuilder::all_rustc().unwrap())
.unwrap()
.emit()
.unwrap();
}

View File

@ -1,15 +1,20 @@
[package]
name = "lb"
version = "0.1.0"
edition = "2024"
version.workspace = true
edition.workspace = true
license.workspace = true
authors.workspace = true
homepage.workspace = true
repository.workspace = true
[dependencies]
camino = "1.1.10"
derive_more = { version = "2.0.1", features = ["full"] }
luaffi = { version = "0.1.0", path = "../luaffi" }
luajit = { version = "0.1.0", path = "../luajit" }
luaffi = { path = "../luaffi" }
luajit = { path = "../luajit" }
sysexits = "0.9.0"
tokio = { version = "1.45.1", features = ["rt", "time", "fs", "net", "process", "signal"] }
tokio = { version = "1.45.1", features = ["rt", "time", "fs", "net", "process", "signal", "tracing"] }
tracing = "0.1.41"
[dev-dependencies]
luaify = { path = "../luaify" }

View File

@ -1,5 +1,7 @@
//! The `lb:fs` module provides utilities for interacting with the file system asynchronously.
//!
//! # Exports
//!
//! See [`lb_libfs`] for items exported by this module.
use luaffi::{cdef, metatype};
use std::io;
@ -22,11 +24,11 @@ impl lb_libfs {
Self
}
pub extern "Lua" fn read(&self, path: string) -> string {
self.__read(path)
}
async extern "Lua-C" fn __read(&self, path: &str) -> io::Result<Vec<u8>> {
pub async extern "Lua-C" fn read(&self, path: &str) -> io::Result<Vec<u8>> {
fs::read(path).await
}
pub extern "Lua-C" fn read_sync(&self, path: &str) -> io::Result<Vec<u8>> {
std::fs::read(path)
}
}

View File

@ -1,6 +1,8 @@
//! The `lb:net` module provides an asynchronous network API for creating TCP or UDP servers and
//! clients.
//!
//! # Exports
//!
//! See [`lb_libnet`] for items exported by this module.
use derive_more::{From, FromStr};
use luaffi::{cdef, metatype};
@ -117,8 +119,8 @@ impl lb_libnet {
/// # Errors
///
/// Throws if an error was encountered during the socket creation.
pub extern "Lua" fn tcp_v4(&self) -> lb_tcpsocket {
self.__new_tcp_v4()
pub extern "Lua-C" fn tcp_v4(&self) -> io::Result<lb_tcpsocket> {
TcpSocket::new_v4().map(lb_tcpsocket)
}
/// Creates a new TCP socket configured for IPv6.
@ -128,15 +130,7 @@ impl lb_libnet {
/// # Errors
///
/// Throws if an error was encountered during the socket creation.
pub extern "Lua" fn tcp_v6(&self) -> lb_tcpsocket {
self.__new_tcp_v6()
}
extern "Lua-C" fn __new_tcp_v4(&self) -> io::Result<lb_tcpsocket> {
TcpSocket::new_v4().map(lb_tcpsocket)
}
extern "Lua-C" fn __new_tcp_v6(&self) -> io::Result<lb_tcpsocket> {
pub extern "Lua-C" fn tcp_v6(&self) -> io::Result<lb_tcpsocket> {
TcpSocket::new_v6().map(lb_tcpsocket)
}
}

View File

@ -1,11 +1,15 @@
[package]
name = "luaffi"
version = "0.1.0"
edition = "2024"
version.workspace = true
edition.workspace = true
license.workspace = true
authors.workspace = true
homepage.workspace = true
repository.workspace = true
[dependencies]
bstr = "1.12.0"
luaffi_impl = { version = "0.1.0", path = "../luaffi_impl" }
luaify = { version = "0.1.0", path = "../luaify" }
luaffi_impl = { path = "../luaffi_impl" }
luaify = { path = "../luaify" }
rustc-hash = "2.1.1"
simdutf8 = "0.1.5"

View File

@ -177,6 +177,15 @@ unsafe impl<F: Future<Output: IntoFfi> + 'static> IntoFfi for lua_future<F> {
self
}
fn require_owned() -> bool {
// future always requires full ownership of itself even if it's a "temporary", because we
// must yield a full cdata to the runtime not a cdata containing a pointer to the future. if
// this is set to false, postlude might receive a reference lua_future cdata instead of a
// full lua_future cdata, and the runtime might incorrectly read the pointer value as
// lua_future itself (it does not dereference it).
true
}
fn postlude(ret: &str) -> impl Display {
// When returning a future from Rust to Lua, yield it immediately to the runtime which will
// poll it to completion in the background, then take the fulfilled value once the thread

View File

@ -417,6 +417,10 @@ pub unsafe trait IntoFfi: Sized {
}
}
fn require_owned() -> bool {
true
}
fn postlude(_ret: &str) -> impl Display {
""
}
@ -481,12 +485,17 @@ impl<'r, 'm> MetatypeMethodBuilder<'r, 'm> {
self
}
pub fn param_str(&mut self, name: impl Display) -> &mut Self {
// fast-path for &str and &[u8]-like parameters
pub fn param_str(
&mut self,
name: impl Display,
allow_nil: bool,
check_utf8: bool,
) -> &mut Self {
// fast-path for &[u8] and &str-like parameters
//
// this passes one lua `string` argument as two C `const uint8_t *ptr` and `uintptr_t len`
// arguments, bypassing the slower generic `&[u8]: FromFfi` path which constructs a
// temporary cdata to pass the string and its length in one argument
// temporary cdata to pass the string and its length in one argument.
let Self {
lparams,
cparams,
@ -495,22 +504,26 @@ impl<'r, 'm> MetatypeMethodBuilder<'r, 'm> {
..
} = self;
let param_ptr = <*const u8>::cdecl("ptr");
let param_len = usize::cdecl("len");
let param_ptr = <*const u8>::cdecl(&name);
let param_len = usize::cdecl(format!("{name}_len"));
(!lparams.is_empty()).then(|| lparams.push_str(", "));
(!cparams.is_empty()).then(|| cparams.push_str(", "));
(!cargs.is_empty()).then(|| cargs.push_str(", "));
write!(lparams, "{name}").unwrap();
write!(cparams, "{param_ptr}, {param_len}",).unwrap();
write!(cparams, "{param_ptr}, {param_len}").unwrap();
write!(cargs, "{name}, __{name}_len").unwrap();
write!(prelude, "local __{name}_len = 0; ").unwrap();
write!(
prelude,
r#"if {name} ~= nil then assert(type({name}) == "string", "string expected in argument '{name}', got " .. type({name})); __{name}_len = #{name}; end; "#
)
.unwrap();
write!(prelude, "local __{name}_len = 0; if {name} ~= nil then ").unwrap();
write!(prelude, r#"assert(type({name}) == "string", "string expected in argument '{name}', got " .. type({name})); "#).unwrap();
write!(prelude, r#"__{name}_len = #{name}; "#).unwrap();
if check_utf8 {
write!(prelude, r#"assert(__C.{IS_UTF8_FN}({name}, __{name}_len), "argument '{name}' must be a valid utf-8 string"); "#).unwrap();
}
if !allow_nil {
write!(prelude, r#"else return error("string expected in argument '{name}', got " .. type({name})); "#).unwrap();
}
write!(prelude, r#"end; "#).unwrap();
self
}
@ -545,21 +558,21 @@ impl<'r, 'm> MetatypeMethodBuilder<'r, 'm> {
if T::Into::ty() == TypeType::Void {
write!(lua, "__C.{func}({cargs}); {postlude}end").unwrap();
} else {
let check = T::postlude("__res");
write!(lua, "local __res = __C.{func}({cargs}); ").unwrap();
write!(lua, "{check}{postlude}return __res; end").unwrap();
let check = T::postlude("__ret");
write!(lua, "local __ret = __C.{func}({cargs}); ").unwrap();
write!(lua, "{check}{postlude}return __ret; end").unwrap();
}
writeln!(cdef, "{};", T::Into::cdecl(display!("{func}({cparams})"))).unwrap();
}
FfiReturnConvention::ByOutParam => {
let ct = T::Into::name();
let check = T::postlude("__res");
write!(lua, "local __res = __new(__ct.{ct}); __C.{func}(__res").unwrap();
let check = T::postlude("__out");
write!(lua, "local __out = __new(__ct.{ct}); __C.{func}(__out").unwrap();
if !cargs.is_empty() {
write!(lua, ", {cargs}").unwrap();
}
write!(lua, "); {check}{postlude}return __res; end").unwrap();
write!(lua, "); {check}{postlude}return __out; end").unwrap();
write!(cdef, "void {func}({}", <*mut T::Into>::cdecl("out")).unwrap();
if !cparams.is_empty() {
write!(cdef, ", {cparams}").unwrap();

View File

@ -1,6 +1,6 @@
use crate::{
__internal::{disp, display},
Cdef, CdefBuilder, IntoFfi, Type, TypeBuilder, TypeType,
Cdef, CdefBuilder, IntoFfi, KEEP_FN, Type, TypeBuilder, TypeType,
string::{DROP_BUFFER_FN, lua_buffer},
};
use std::{ffi::c_int, fmt::Display};
@ -49,22 +49,44 @@ unsafe impl<T: IntoFfi, E: Display> IntoFfi for Result<T, E> {
}
}
fn require_owned() -> bool {
// lua_result is only used to transmit information about whether an operation succeeded or
// not and is forgotten immediately after use, so there is no need for an owned result
false
}
fn postlude(ret: &str) -> impl Display {
disp(move |f| {
let ct = T::Into::name();
write!(f, "if {ret}.__tag ~= 0 then ")?;
match T::Into::ty() {
TypeType::Void => write!(f, "{ret} = nil; "), // for void results, we don't have a __value
TypeType::Primitive => write!(f, "{ret} = {ret}.__value; "),
TypeType::Aggregate => write!(f, "{ret} = __new(__ct.{ct}, {ret}.__value); "),
}?;
write!(f, "{}", T::postlude(ret))?;
TypeType::Void => write!(f, "{ret} = nil; ")?, // for void results, we don't have a __value
TypeType::Primitive => {
// can always copy primitives to stack
write!(f, "{ret} = {ret}.__value; {}", T::postlude(ret))?;
}
TypeType::Aggregate => {
let ct = T::Into::name();
if T::require_owned() {
// inner value requires ownership; copy it into its own cdata and forget
// result.
write!(f, "{ret} = __new(__ct.{ct}, {ret}.__value); ")?;
write!(f, "{}", T::postlude(ret))?;
} else {
// inner value is a "temporary" itself and doesn't require full ownership of
// itself. we just need to keep the result object alive until its postlude
// completes.
write!(f, "local __{ret} = {ret}; {ret} = {ret}.__value; ")?;
write!(f, "do {}end; ", T::postlude(ret))?;
write!(f, "__C.{KEEP_FN}(__{ret}); ")?; // keep original result alive
}
}
}
write!(
f,
"else \
local __{ret}_msg = __intern({ret}.__err.__ptr, {ret}.__err.__len); \
local {ret}_err = __intern({ret}.__err.__ptr, {ret}.__err.__len); \
__C.{DROP_BUFFER_FN}({ret}.__err); \
return error(__{ret}_msg); \
return error({ret}_err); \
end; "
)
})

View File

@ -154,8 +154,14 @@ unsafe impl IntoFfi for &'static [u8] {
lua_buf::new(self)
}
fn require_owned() -> bool {
// lua_buf is only used to have its contents interned then forgotten immediately; no need
// for ownership of it
false
}
fn postlude(ret: &str) -> impl Display {
display!("{ret} = __intern({ret}.__ptr, {ret}.__len)")
display!("{ret} = __intern({ret}.__ptr, {ret}.__len); ")
}
}
@ -166,9 +172,15 @@ unsafe impl IntoFfi for Vec<u8> {
lua_buffer::new(self)
}
fn require_owned() -> bool {
// lua_buffer is only used to have its contents interned then forgotten immediately; no need
// for ownership of it
false
}
fn postlude(ret: &str) -> impl Display {
display!(
"do local __{ret} = {ret}; {ret} = __intern({ret}.__ptr, {ret}.__len); __C.{DROP_BUFFER_FN}(__{ret}); end; "
"local {ret}_buf = {ret}; {ret} = __intern({ret}.__ptr, {ret}.__len); __C.{DROP_BUFFER_FN}({ret}_buf); "
)
}
}

View File

@ -1,7 +1,11 @@
[package]
name = "luaffi_impl"
version = "0.1.0"
edition = "2024"
version.workspace = true
edition.workspace = true
license.workspace = true
authors.workspace = true
homepage.workspace = true
repository.workspace = true
[lib]
proc-macro = true

View File

@ -24,7 +24,7 @@ pub fn transform(_args: Args, mut item: Item) -> Result<TokenStream> {
let mod_name = format_ident!("__{name}_cdef");
Ok(quote!(
Ok(quote_spanned!(name.span() =>
#[repr(C)]
#[allow(non_camel_case_types)]
#item

View File

@ -1,5 +1,6 @@
use crate::utils::{
ffi_crate, is_primitivelike, is_unit, pat_ident, syn_assert, syn_error, ty_name,
StringLike, ffi_crate, is_optionlike, is_primitivelike, is_stringlike, is_unit, pat_ident,
syn_assert, syn_error, ty_name,
};
use proc_macro2::TokenStream;
use quote::{ToTokens, format_ident, quote, quote_spanned};
@ -16,7 +17,7 @@ pub fn transform(mut imp: ItemImpl) -> Result<TokenStream> {
let impls = generate_impls(&mut imp)?;
let mod_name = format_ident!("__{}_metatype", ty_name(&imp.self_ty)?);
Ok(quote!(
Ok(quote_spanned!(imp.self_ty.span() =>
#imp
#[doc(hidden)]
@ -29,12 +30,27 @@ pub fn transform(mut imp: ItemImpl) -> Result<TokenStream> {
))
}
struct Registry {
ty: Ident,
shims: Vec<ImplItemFn>,
build: Vec<TokenStream>,
}
impl Registry {
fn new(ty: Ident) -> Self {
Self {
ty,
shims: vec![],
build: vec![],
}
}
}
fn generate_impls(imp: &mut ItemImpl) -> Result<TokenStream> {
let ffi = ffi_crate();
let ty = imp.self_ty.clone();
let ty_name = ty_name(&ty)?;
let mut ffi_funcs = FfiRegistry::new(ty_name.clone());
let mut lua_funcs = LuaRegistry::new(ty_name.clone());
let mut registry = Registry::new(ty_name.clone());
let mut mms = HashSet::new();
let mut lua_drop = None;
@ -47,7 +63,7 @@ fn generate_impls(imp: &mut ItemImpl) -> Result<TokenStream> {
);
}
add_ffi_function(&mut ffi_funcs, &func)?;
add_ffi_function(&mut registry, &func)?;
}
for func in get_lua_functions(imp)? {
@ -59,38 +75,33 @@ fn generate_impls(imp: &mut ItemImpl) -> Result<TokenStream> {
);
}
if func.attrs.metamethod == Some(Metamethod::Gc) {
if let Some(Metamethod::Gc) = func.attrs.metamethod {
lua_drop = Some(func);
} else {
add_lua_function(&mut lua_funcs, &func)?;
add_lua_function(&mut registry, &func)?;
}
}
if !mms.contains(&Metamethod::New) {
inject_fallback_new(&mut lua_funcs)?;
inject_fallback_new(&mut registry)?;
}
inject_merged_drop(&mut ffi_funcs, lua_drop.as_ref())?;
inject_merged_drop(&mut registry, lua_drop.as_ref())?;
let ffi_shims = &ffi_funcs.shims;
let ffi_build = &ffi_funcs.build;
let lua_build = &lua_funcs.build;
let ffi_exports = generate_ffi_exports(&ffi_funcs)?;
let shims = &registry.shims;
let build = &registry.build;
let exports = generate_ffi_exports(&registry)?;
Ok(quote! {
impl #ty { #(#ffi_shims)* }
Ok(quote_spanned!(ty.span() =>
impl #ty { #(#shims)* }
unsafe impl #ffi::Metatype for #ty {
type Target = Self;
fn build(b: &mut #ffi::MetatypeBuilder) {
#(#ffi_build)*
#(#lua_build)*
}
fn build(b: &mut #ffi::MetatypeBuilder) { #(#build)* }
}
#ffi_exports
})
#exports
))
}
#[derive(Debug, Clone, Copy, PartialEq, Eq, Hash)]
@ -201,9 +212,15 @@ fn get_ffi_functions(imp: &mut ItemImpl) -> Result<Vec<FfiFunction>> {
&& let Some(ref abi) = abi.name
&& abi.value() == "Lua-C"
{
syn_assert!(
func.sig.generics.params.len() == 0,
func.sig.generics,
"cannot be generic"
);
func.sig.abi = None;
let params = func
let params: Vec<_> = func
.sig
.inputs
.iter()
@ -221,9 +238,29 @@ fn get_ffi_functions(imp: &mut ItemImpl) -> Result<Vec<FfiFunction>> {
ReturnType::Type(_, ref ty) => (**ty).clone(),
};
for param in params.iter() {
// double underscores are reserved for generated glue code
syn_assert!(
!pat_ident(&param.pat)?.to_string().starts_with("__"),
param.pat,
"parameter names should not start with `__`"
);
// lifetime should be determined by the caller (lua)
if let Type::Reference(ref ty) = *param.ty {
syn_assert!(
ty.lifetime.is_none(),
ty.lifetime,
"lifetime should be determined by the caller"
);
}
}
let attrs = parse_ffi_function_attrs(&mut func.attrs)?;
attrs.metamethod.map(|mm| document_metamethod(func, mm));
document_ffi_function(func);
funcs.push(FfiFunction {
name: func.sig.ident.clone(),
is_async: func.sig.asyncness.is_some(),
@ -259,14 +296,26 @@ fn parse_ffi_function_attrs(attrs: &mut Vec<Attribute>) -> Result<FfiFunctionAtt
Ok(parsed)
}
#[derive(Debug, Clone, Copy)]
enum FfiParameterType {
Default,
StringLike(StringLike),
OptionStringLike(StringLike),
}
fn get_ffi_param_type(_ty: &Type) -> FfiParameterType {
FfiParameterType::Default
fn get_ffi_param_type(ty: &Type) -> FfiParameterType {
if let Some(str) = is_stringlike(ty) {
FfiParameterType::StringLike(str)
} else if let Some(arg) = is_optionlike(ty)
&& let Some(str) = is_stringlike(arg)
{
FfiParameterType::OptionStringLike(str)
} else {
FfiParameterType::Default
}
}
#[derive(Debug, Clone, Copy)]
enum FfiReturnType {
Void,
ByValue,
@ -296,23 +345,7 @@ fn get_ffi_ret_type(ty: &Type) -> FfiReturnType {
}
}
struct FfiRegistry {
ty: Ident,
shims: Vec<ImplItemFn>,
build: Vec<TokenStream>,
}
impl FfiRegistry {
fn new(ty: Ident) -> Self {
Self {
ty,
shims: vec![],
build: vec![],
}
}
}
fn add_ffi_function(registry: &mut FfiRegistry, func: &FfiFunction) -> Result<()> {
fn add_ffi_function(registry: &mut Registry, func: &FfiFunction) -> Result<()> {
let ffi = ffi_crate();
let ty = &registry.ty;
let func_name = &func.name;
@ -364,6 +397,41 @@ fn add_ffi_function(registry: &mut FfiRegistry, func: &FfiFunction) -> Result<()
b.param::<#func_param>(#name);
));
}
ty @ (FfiParameterType::StringLike(str) | FfiParameterType::OptionStringLike(str)) => {
let shim_param_len = format_ident!("arg{i}_len");
shim_params.push(quote_spanned!(func_param.span() =>
#shim_param: ::std::option::Option<&::std::primitive::u8>,
#shim_param_len: ::std::primitive::usize
));
let allow_nil = matches!(ty, FfiParameterType::OptionStringLike(_));
let check_utf8 = matches!(str, StringLike::Str);
let mut func_arg = quote_spanned!(func_param.span() =>
#shim_param.map(|s| ::std::slice::from_raw_parts(s, #shim_param_len))
);
func_arg = match str {
StringLike::SliceU8 => func_arg,
StringLike::BStr => {
quote_spanned!(func_param.span() => #func_arg.map(::bstr::BStr::new))
}
StringLike::Str => {
quote_spanned!(func_param.span() => #func_arg.map(|s| {
::std::debug_assert!(::std::str::from_utf8(s).is_ok());
::std::str::from_utf8_unchecked(s)
}))
}
};
if !allow_nil {
func_arg = quote_spanned!(func_param.span() => {
let arg = #func_arg;
::std::debug_assert!(arg.is_some());
arg.unwrap_unchecked()
});
}
func_args.push(func_arg);
build.push(quote_spanned!(param.pat.span() =>
b.param_str(#name, #allow_nil, #check_utf8);
));
}
}
}
@ -392,8 +460,12 @@ fn add_ffi_function(registry: &mut FfiRegistry, func: &FfiFunction) -> Result<()
<#func_ret as #ffi::IntoFfi>::convention() == #ffi::FfiReturnConvention::ByOutParam
));
shim_params.insert(0, quote!(out: *mut #shim_ret));
(shim_body, shim_ret) = (quote!(::std::ptr::write(out, #shim_body)), quote!(()));
shim_params.insert(0, quote_spanned!(func_ret.span() => out: *mut #shim_ret));
(shim_body, shim_ret) = (
quote_spanned!(func_ret.span() => ::std::ptr::write(out, #shim_body)),
quote_spanned!(func_ret.span() => ()),
);
}
};
}
@ -417,19 +489,23 @@ fn add_ffi_function(registry: &mut FfiRegistry, func: &FfiFunction) -> Result<()
));
registry.build.push(match func.attrs.metamethod {
Some(ref mm) => quote!(b.metatable(#mm, |b| { #(#build)* });),
None => quote!(b.index(#lua_name, |b| { #(#build)* });),
Some(ref mm) => quote_spanned!(func_name.span() =>
b.metatable(#mm, |b| { #(#build)* });
),
None => quote_spanned!(func_name.span() =>
b.index(#lua_name, |b| { #(#build)* });
),
});
registry.shims.push(parse_quote_spanned!(func_name.span() =>
#[unsafe(export_name = #c_name)]
unsafe extern "C" fn #shim_name(#(#shim_params),*) -> #shim_ret { #shim_body }
unsafe extern "C" fn #shim_name(#(#shim_params),*) -> #shim_ret { unsafe { #shim_body } }
));
Ok(())
}
fn generate_ffi_exports(registry: &FfiRegistry) -> Result<TokenStream> {
fn generate_ffi_exports(registry: &Registry) -> Result<TokenStream> {
let ty = &registry.ty;
let names = registry.shims.iter().map(|f| &f.sig.ident);
@ -464,6 +540,12 @@ fn get_lua_functions(imp: &mut ItemImpl) -> Result<Vec<LuaFunction>> {
&& let Some(ref abi) = abi.name
&& abi.value() == "Lua"
{
syn_assert!(
func.sig.generics.params.len() == 0,
func.sig.generics,
"cannot be generic"
);
let mut params: Vec<_> = func
.sig
.inputs
@ -485,6 +567,8 @@ fn get_lua_functions(imp: &mut ItemImpl) -> Result<Vec<LuaFunction>> {
let attrs = parse_lua_function_attrs(&mut func.attrs)?;
attrs.metamethod.map(|mm| document_metamethod(func, mm));
document_lua_function(func);
funcs.push(LuaFunction {
name: func.sig.ident.clone(),
params,
@ -506,9 +590,10 @@ fn stub_lua_function(func: &mut ImplItemFn) -> Result<()> {
// documentation generation
func.sig.abi = None;
func.attrs.push(parse_quote!(#[allow(unused)]));
func.block = parse_quote!({
func.block.stmts.clear();
func.block.stmts.push(parse_quote!(
::std::unreachable!("cannot call lua function from rust");
});
));
let inputs = &mut func.sig.inputs;
let output = &mut func.sig.output;
@ -584,63 +669,27 @@ fn parse_lua_function_attrs(attrs: &mut Vec<Attribute>) -> Result<LuaFunctionAtt
Ok(parsed)
}
struct LuaRegistry {
ty: Ident,
build: Vec<TokenStream>,
}
impl LuaRegistry {
fn new(ty: Ident) -> Self {
Self { ty, build: vec![] }
}
}
fn add_lua_function(registry: &mut LuaRegistry, func: &LuaFunction) -> Result<()> {
fn add_lua_function(registry: &mut Registry, func: &LuaFunction) -> Result<()> {
let ffi = ffi_crate();
let luaify = quote!(#ffi::__internal::luaify!);
let name = func.name.unraw().to_string();
let func_name = &func.name;
let params = &func.params;
let body = &func.body;
let name = func_name.unraw().to_string();
registry.build.push(match func.attrs.metamethod {
Some(ref mm) => quote!(b.metatable_raw(#mm, #luaify(|#(#params),*| #body));),
None => quote!(b.index_raw(#name, #luaify(|#(#params),*| #body));),
Some(ref mm) => quote_spanned!(func_name.span() =>
b.metatable_raw(#mm, #luaify(|#(#params),*| #body));
),
None => quote_spanned!(func_name.span() =>
b.index_raw(#name, #luaify(|#(#params),*| #body));
),
});
Ok(())
}
fn document_metamethod(func: &mut ImplItemFn, method: Metamethod) {
let s = match method {
Metamethod::Eq => "This is a metamethod which is called by the `==` operator.".into(),
Metamethod::Len => "This is a metamethod which is called by the `#` operator.".into(),
Metamethod::Lt => "This is a metamethod which is called by the `<` operator.".into(),
Metamethod::Le => "This is a metamethod which is called by the `<=` operator.".into(),
Metamethod::Concat => "This is a metamethod which is called by the `..` operator.".into(),
Metamethod::Add => "This is a metamethod which is called by the `+` operator.".into(),
Metamethod::Sub => "This is a metamethod which is called by the `-` operator.".into(),
Metamethod::Mul => "This is a metamethod which is called by the `*` operator.".into(),
Metamethod::Div => "This is a metamethod which is called by the `/` operator.".into(),
Metamethod::Mod => "This is a metamethod which is called by the `%` operator.".into(),
Metamethod::Pow => "This is a metamethod which is called by the `^` operator.".into(),
Metamethod::Unm => "This is a metamethod which is called by the `-` operator.".into(),
Metamethod::ToString => {
"This is a metamethod which can be called by the `tostring` built-in function.".into()
}
Metamethod::Pairs => {
"This is a metamethod which can be called by the `pairs` built-in function.".into()
}
Metamethod::Ipairs => {
"This is a metamethod which can be called by the `ipairs` built-in function.".into()
}
_ => format!("This is a metamethod and cannot be called directly."),
};
func.attrs.push(parse_quote!(#[doc = ""]));
func.attrs.push(parse_quote!(#[doc = #s]));
}
fn inject_fallback_new(registry: &mut LuaRegistry) -> Result<()> {
fn inject_fallback_new(registry: &mut Registry) -> Result<()> {
let ty = &registry.ty;
let lua = format!(
r#"function() error("type '{}' has no constructor"); end"#,
@ -654,7 +703,7 @@ fn inject_fallback_new(registry: &mut LuaRegistry) -> Result<()> {
Ok(())
}
fn inject_merged_drop(registry: &mut FfiRegistry, lua: Option<&LuaFunction>) -> Result<()> {
fn inject_merged_drop(registry: &mut Registry, lua: Option<&LuaFunction>) -> Result<()> {
let ffi = ffi_crate();
let luaify = quote!(#ffi::__internal::luaify!);
let ty = &registry.ty;
@ -711,3 +760,45 @@ fn inject_merged_drop(registry: &mut FfiRegistry, lua: Option<&LuaFunction>) ->
Ok(())
}
fn document_ffi_function(func: &mut ImplItemFn) {
func.attrs.insert(0, parse_quote!(#[doc =
r#"<span class="stab" title="This is a C/FFI function." style="float: right; font-weight: 500; margin-left: 3px; padding-left: 5px; padding-right: 5px;">FFI</span>"#
]));
}
fn document_lua_function(func: &mut ImplItemFn) {
func.attrs.insert(0, parse_quote!(#[doc =
r#"<span class="stab" title="This is a Lua function." style="float: right; font-weight: 500; margin-left: 3px; padding-left: 5px; padding-right: 5px;">Lua</span>"#
]));
}
fn document_metamethod(func: &mut ImplItemFn, method: Metamethod) {
let s = match method {
Metamethod::Eq => "This is a metamethod which is called by the `==` operator.".into(),
Metamethod::Len => "This is a metamethod which is called by the `#` operator.".into(),
Metamethod::Lt => "This is a metamethod which is called by the `<` operator.".into(),
Metamethod::Le => "This is a metamethod which is called by the `<=` operator.".into(),
Metamethod::Concat => "This is a metamethod which is called by the `..` operator.".into(),
Metamethod::Add => "This is a metamethod which is called by the `+` operator.".into(),
Metamethod::Sub => "This is a metamethod which is called by the `-` operator.".into(),
Metamethod::Mul => "This is a metamethod which is called by the `*` operator.".into(),
Metamethod::Div => "This is a metamethod which is called by the `/` operator.".into(),
Metamethod::Mod => "This is a metamethod which is called by the `%` operator.".into(),
Metamethod::Pow => "This is a metamethod which is called by the `^` operator.".into(),
Metamethod::Unm => "This is a metamethod which is called by the `-` operator.".into(),
Metamethod::ToString => {
"This is a metamethod which can be called by the `tostring` built-in function.".into()
}
Metamethod::Pairs => {
"This is a metamethod which can be called by the `pairs` built-in function.".into()
}
Metamethod::Ipairs => {
"This is a metamethod which can be called by the `ipairs` built-in function.".into()
}
_ => format!("This is a metamethod and cannot be called directly."),
};
func.attrs.push(parse_quote!(#[doc = ""]));
func.attrs.push(parse_quote!(#[doc = #s]));
}

View File

@ -57,13 +57,13 @@ pub fn is_unit(ty: &Type) -> bool {
pub fn is_primitivelike(ty: &Type) -> bool {
match ty {
Type::Tuple(tuple) if tuple.elems.is_empty() => true, // unit type
Type::Reference(_) | Type::Ptr(_) => true,
Type::Paren(paren) => is_primitivelike(&paren.elem),
Type::Tuple(tuple) if tuple.elems.is_empty() => return true, // unit type
Type::Reference(_) | Type::Ptr(_) => return true,
Type::Paren(paren) => return is_primitivelike(&paren.elem),
Type::Path(path) => {
if let Some(name) = path.path.get_ident() {
matches!(
format!("{name}").as_str(),
return matches!(
name.to_string().as_str(),
"bool"
| "u8"
| "u16"
@ -94,11 +94,66 @@ pub fn is_primitivelike(ty: &Type) -> bool {
| "c_size_t"
| "c_ssize_t"
| "c_ptrdiff_t"
)
} else {
false
);
}
}
_ => false,
_ => {}
}
false
}
#[derive(Debug, Clone, Copy)]
pub enum StringLike {
SliceU8,
Str,
BStr,
}
pub fn is_stringlike(ty: &Type) -> Option<StringLike> {
if let Type::Reference(ty) = ty
&& ty.mutability.is_none()
&& ty.lifetime.is_none()
{
match *ty.elem {
Type::Slice(ref slice) => {
// match &[u8]
if let Type::Path(ref path) = *slice.elem
&& let Some(name) = path.path.get_ident()
&& name == "u8"
{
return Some(StringLike::SliceU8);
}
}
Type::Path(ref path) => {
// match &str or &BStr
if let Some(name) = path.path.get_ident() {
match name.to_string().as_str() {
"str" => return Some(StringLike::Str),
"BStr" => return Some(StringLike::BStr),
_ => {}
}
}
}
_ => {}
}
}
None
}
pub fn is_optionlike(ty: &Type) -> Option<&Type> {
if let Type::Path(path) = ty
&& path.path.leading_colon.is_none()
&& path.path.segments.len() == 1
&& let Some(segment) = path.path.segments.get(0)
&& segment.ident == "Option"
&& let PathArguments::AngleBracketed(ref angle) = segment.arguments
&& angle.args.len() == 1
&& let Some(GenericArgument::Type(ty)) = angle.args.get(0)
{
Some(ty)
} else {
None
}
}

View File

@ -1,7 +1,11 @@
[package]
name = "luaify"
version = "0.1.0"
edition = "2024"
version.workspace = true
edition.workspace = true
license.workspace = true
authors.workspace = true
homepage.workspace = true
repository.workspace = true
[lib]
proc-macro = true

View File

@ -1,7 +1,11 @@
[package]
name = "luajit-sys"
version = "0.1.0"
edition = "2024"
version.workspace = true
edition.workspace = true
license.workspace = true
authors.workspace = true
homepage.workspace = true
repository.workspace = true
[lib]
path = "lib.rs"

View File

@ -1,7 +1,11 @@
[package]
name = "luajit"
version = "0.1.0"
edition = "2024"
version.workspace = true
edition.workspace = true
license.workspace = true
authors.workspace = true
homepage.workspace = true
repository.workspace = true
[features]
runtime = ["luajit-sys/runtime"]
@ -10,6 +14,6 @@ unwind = ["luajit-sys/unwind"]
[dependencies]
bitflags = { version = "2.9.1", features = ["std"] }
bstr = "1.12.0"
luaffi = { version = "0.1.0", path = "../luaffi" }
luajit-sys = { version = "0.1.0", path = "../luajit-sys" }
luaffi = { path = "../luaffi" }
luajit-sys = { path = "../luajit-sys" }
thiserror = "2.0.12"

View File

@ -25,6 +25,16 @@ pub fn version() -> &'static str {
LUAJIT_VERSION.to_str().unwrap()
}
/// LuaJIT copyright string.
pub fn copyright() -> &'static str {
LUAJIT_COPYRIGHT.to_str().unwrap()
}
/// LuaJIT URL string.
pub fn url() -> &'static str {
LUAJIT_URL.to_str().unwrap()
}
/// Lua error.
#[derive(Debug, Error)]
#[non_exhaustive]
@ -1333,8 +1343,7 @@ impl<'s> DerefMut for StackGuard<'s> {
impl<'s> Drop for StackGuard<'s> {
fn drop(&mut self) {
#[cfg(debug_assertions)]
if self.check_overpop {
if cfg!(debug_assertions) && self.check_overpop {
let new_size = self.stack.size();
assert!(
self.size <= new_size,

View File

@ -30,8 +30,11 @@ fn panic_cb(panic: &panic::PanicHookInfo) {
eprintln!(
"{}",
"This is a bug in luby. Please kindly report this at https://git.lua.re/luaneko/luby."
.yellow()
format_args!(
"This is a bug in luby. Please kindly report this at {}.",
env!("CARGO_PKG_REPOSITORY")
)
.yellow()
);
}
@ -45,7 +48,7 @@ struct Args {
#[clap(long, short = 'e', value_name = "CHUNK")]
eval: Vec<String>,
/// Libraries to require on startup.
/// Libraries to require.
#[clap(long, short = 'l', value_name = "NAME")]
lib: Vec<String>,
@ -54,29 +57,45 @@ struct Args {
log: tracing::Level,
/// LuaJIT control commands.
#[clap(long, short = 'j', value_name = "CMD=FLAGS")]
#[clap(long, short = 'j', help_heading = "Runtime", value_name = "CMD=FLAGS")]
jit: Vec<String>,
/// Number of tokio worker threads.
#[clap(long, value_name = "THREADS", default_value_t = Self::threads())]
/// Number of worker threads.
#[clap(
long,
short = 'T',
help_heading = "Runtime",
value_name = "THREADS",
default_value_t = Self::threads()
)]
threads: NonZero<usize>,
/// Number of tokio blocking threads.
#[clap(long, value_name = "THREADS", default_value_t = Self::blocking_threads())]
/// Number of blocking threads.
#[clap(
long,
help_heading = "Runtime",
value_name = "THREADS",
default_value_t = Self::blocking_threads()
)]
blocking_threads: NonZero<usize>,
/// Enable tokio-console integration.
#[clap(long)]
#[clap(long, help_heading = "Debugging")]
enable_console: bool,
/// tokio-console publish address.
#[clap(
long,
help_heading = "Debugging",
value_name = "ADDRESS",
default_value = "127.0.0.1:6669",
requires = "enable_console"
)]
console_addr: SocketAddr,
/// Print version.
#[clap(long, short = 'V')]
version: bool,
}
impl Args {
@ -100,6 +119,10 @@ fn main() -> Result<(), ExitCode> {
panic::set_hook(Box::new(panic_cb));
let args = Args::parse();
if args.version {
return Ok(print_version());
}
init_logger(&args);
let tokio = init_tokio(&args);
@ -112,6 +135,18 @@ fn main() -> Result<(), ExitCode> {
})
}
fn print_version() {
println!("luby {}", env!("VERGEN_GIT_DESCRIBE"));
println!("{}\n", env!("CARGO_PKG_HOMEPAGE"));
println!("Compiled with {} -- {}", luajit::version(), luajit::url());
println!(
"Compiled with rustc {} on {} for {}",
env!("VERGEN_RUSTC_SEMVER"),
env!("VERGEN_RUSTC_HOST_TRIPLE"),
env!("VERGEN_CARGO_TARGET_TRIPLE"),
);
}
fn init_logger(args: &Args) {
use tracing::level_filters::LevelFilter;
use tracing_subscriber::{Layer, util::*};