mirror of
https://github.com/rust-lang/rust-analyzer
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Auto merge of #12795 - jonas-schievink:proc-macro-abi-1.64, r=jonas-schievink
feat: Support the 1.64 nightly proc macro ABI Should resolve https://github.com/rust-lang/rust-analyzer/issues/12600 Not sure why I thought the Rust version was the same as on beta, that's never the case (but future nightly changes can break the ABI again).
This commit is contained in:
bors
commit
ee2d5fed30
15 changed files with 4443 additions and 1 deletions
104
crates/proc-macro-srv/src/abis/abi_1_64/mod.rs
Normal file
104
crates/proc-macro-srv/src/abis/abi_1_64/mod.rs
Normal file
|
|
@ -0,0 +1,104 @@
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//! Macro ABI for version 1.63 of rustc
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#[allow(dead_code)]
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#[doc(hidden)]
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mod proc_macro;
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#[allow(dead_code)]
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#[doc(hidden)]
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mod rustc_server;
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use libloading::Library;
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use proc_macro_api::ProcMacroKind;
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use super::PanicMessage;
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pub(crate) struct Abi {
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exported_macros: Vec<proc_macro::bridge::client::ProcMacro>,
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}
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impl From<proc_macro::bridge::PanicMessage> for PanicMessage {
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fn from(p: proc_macro::bridge::PanicMessage) -> Self {
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Self { message: p.as_str().map(|s| s.to_string()) }
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}
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}
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impl Abi {
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pub unsafe fn from_lib(lib: &Library, symbol_name: String) -> Result<Abi, libloading::Error> {
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let macros: libloading::Symbol<&&[proc_macro::bridge::client::ProcMacro]> =
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lib.get(symbol_name.as_bytes())?;
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Ok(Self { exported_macros: macros.to_vec() })
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}
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pub fn expand(
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&self,
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macro_name: &str,
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macro_body: &tt::Subtree,
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attributes: Option<&tt::Subtree>,
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) -> Result<tt::Subtree, PanicMessage> {
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let parsed_body = rustc_server::TokenStream::with_subtree(macro_body.clone());
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let parsed_attributes = attributes.map_or(rustc_server::TokenStream::new(), |attr| {
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rustc_server::TokenStream::with_subtree(attr.clone())
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});
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for proc_macro in &self.exported_macros {
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match proc_macro {
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proc_macro::bridge::client::ProcMacro::CustomDerive {
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trait_name, client, ..
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} if *trait_name == macro_name => {
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let res = client.run(
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&proc_macro::bridge::server::SameThread,
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rustc_server::Rustc::default(),
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parsed_body,
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true,
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);
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return res.map(|it| it.into_subtree()).map_err(PanicMessage::from);
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}
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proc_macro::bridge::client::ProcMacro::Bang { name, client }
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if *name == macro_name =>
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{
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let res = client.run(
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&proc_macro::bridge::server::SameThread,
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rustc_server::Rustc::default(),
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parsed_body,
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true,
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);
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return res.map(|it| it.into_subtree()).map_err(PanicMessage::from);
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}
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proc_macro::bridge::client::ProcMacro::Attr { name, client }
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if *name == macro_name =>
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{
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let res = client.run(
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&proc_macro::bridge::server::SameThread,
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rustc_server::Rustc::default(),
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parsed_attributes,
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parsed_body,
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true,
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);
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return res.map(|it| it.into_subtree()).map_err(PanicMessage::from);
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}
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_ => continue,
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}
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}
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Err(proc_macro::bridge::PanicMessage::String("Nothing to expand".to_string()).into())
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}
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pub fn list_macros(&self) -> Vec<(String, ProcMacroKind)> {
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self.exported_macros
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.iter()
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.map(|proc_macro| match proc_macro {
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proc_macro::bridge::client::ProcMacro::CustomDerive { trait_name, .. } => {
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(trait_name.to_string(), ProcMacroKind::CustomDerive)
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}
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proc_macro::bridge::client::ProcMacro::Bang { name, .. } => {
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(name.to_string(), ProcMacroKind::FuncLike)
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}
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proc_macro::bridge::client::ProcMacro::Attr { name, .. } => {
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(name.to_string(), ProcMacroKind::Attr)
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}
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})
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.collect()
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}
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}
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|
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@ -0,0 +1,156 @@
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//! Buffer management for same-process client<->server communication.
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|
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use std::io::{self, Write};
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use std::mem;
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use std::ops::{Deref, DerefMut};
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use std::slice;
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|
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#[repr(C)]
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pub struct Buffer {
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data: *mut u8,
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len: usize,
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capacity: usize,
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reserve: extern "C" fn(Buffer, usize) -> Buffer,
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drop: extern "C" fn(Buffer),
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||||
}
|
||||
|
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unsafe impl Sync for Buffer {}
|
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unsafe impl Send for Buffer {}
|
||||
|
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impl Default for Buffer {
|
||||
#[inline]
|
||||
fn default() -> Self {
|
||||
Self::from(vec![])
|
||||
}
|
||||
}
|
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|
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impl Deref for Buffer {
|
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type Target = [u8];
|
||||
#[inline]
|
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fn deref(&self) -> &[u8] {
|
||||
unsafe { slice::from_raw_parts(self.data as *const u8, self.len) }
|
||||
}
|
||||
}
|
||||
|
||||
impl DerefMut for Buffer {
|
||||
#[inline]
|
||||
fn deref_mut(&mut self) -> &mut [u8] {
|
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unsafe { slice::from_raw_parts_mut(self.data, self.len) }
|
||||
}
|
||||
}
|
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|
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impl Buffer {
|
||||
#[inline]
|
||||
pub(super) fn new() -> Self {
|
||||
Self::default()
|
||||
}
|
||||
|
||||
#[inline]
|
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pub(super) fn clear(&mut self) {
|
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self.len = 0;
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||||
}
|
||||
|
||||
#[inline]
|
||||
pub(super) fn take(&mut self) -> Self {
|
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mem::take(self)
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||||
}
|
||||
|
||||
// We have the array method separate from extending from a slice. This is
|
||||
// because in the case of small arrays, codegen can be more efficient
|
||||
// (avoiding a memmove call). With extend_from_slice, LLVM at least
|
||||
// currently is not able to make that optimization.
|
||||
#[inline]
|
||||
pub(super) fn extend_from_array<const N: usize>(&mut self, xs: &[u8; N]) {
|
||||
if xs.len() > (self.capacity - self.len) {
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||||
let b = self.take();
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||||
*self = (b.reserve)(b, xs.len());
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||||
}
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||||
unsafe {
|
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xs.as_ptr().copy_to_nonoverlapping(self.data.add(self.len), xs.len());
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self.len += xs.len();
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||||
}
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||||
}
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|
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#[inline]
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pub(super) fn extend_from_slice(&mut self, xs: &[u8]) {
|
||||
if xs.len() > (self.capacity - self.len) {
|
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let b = self.take();
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||||
*self = (b.reserve)(b, xs.len());
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||||
}
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unsafe {
|
||||
xs.as_ptr().copy_to_nonoverlapping(self.data.add(self.len), xs.len());
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self.len += xs.len();
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||||
}
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||||
}
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#[inline]
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pub(super) fn push(&mut self, v: u8) {
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||||
// The code here is taken from Vec::push, and we know that reserve()
|
||||
// will panic if we're exceeding isize::MAX bytes and so there's no need
|
||||
// to check for overflow.
|
||||
if self.len == self.capacity {
|
||||
let b = self.take();
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*self = (b.reserve)(b, 1);
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||||
}
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||||
unsafe {
|
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*self.data.add(self.len) = v;
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||||
self.len += 1;
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||||
}
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||||
}
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||||
}
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||||
|
||||
impl Write for Buffer {
|
||||
#[inline]
|
||||
fn write(&mut self, xs: &[u8]) -> io::Result<usize> {
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||||
self.extend_from_slice(xs);
|
||||
Ok(xs.len())
|
||||
}
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||||
|
||||
#[inline]
|
||||
fn write_all(&mut self, xs: &[u8]) -> io::Result<()> {
|
||||
self.extend_from_slice(xs);
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||||
Ok(())
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||||
}
|
||||
|
||||
#[inline]
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||||
fn flush(&mut self) -> io::Result<()> {
|
||||
Ok(())
|
||||
}
|
||||
}
|
||||
|
||||
impl Drop for Buffer {
|
||||
#[inline]
|
||||
fn drop(&mut self) {
|
||||
let b = self.take();
|
||||
(b.drop)(b);
|
||||
}
|
||||
}
|
||||
|
||||
impl From<Vec<u8>> for Buffer {
|
||||
fn from(mut v: Vec<u8>) -> Self {
|
||||
let (data, len, capacity) = (v.as_mut_ptr(), v.len(), v.capacity());
|
||||
mem::forget(v);
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||||
|
||||
// This utility function is nested in here because it can *only*
|
||||
// be safely called on `Buffer`s created by *this* `proc_macro`.
|
||||
fn to_vec(b: Buffer) -> Vec<u8> {
|
||||
unsafe {
|
||||
let Buffer { data, len, capacity, .. } = b;
|
||||
mem::forget(b);
|
||||
Vec::from_raw_parts(data, len, capacity)
|
||||
}
|
||||
}
|
||||
|
||||
extern "C" fn reserve(b: Buffer, additional: usize) -> Buffer {
|
||||
let mut v = to_vec(b);
|
||||
v.reserve(additional);
|
||||
Buffer::from(v)
|
||||
}
|
||||
|
||||
extern "C" fn drop(b: Buffer) {
|
||||
mem::drop(to_vec(b));
|
||||
}
|
||||
|
||||
Buffer { data, len, capacity, reserve, drop }
|
||||
}
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||||
}
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|
|
@ -0,0 +1,529 @@
|
|||
//! Client-side types.
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||||
|
||||
use super::*;
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||||
|
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use std::marker::PhantomData;
|
||||
|
||||
macro_rules! define_handles {
|
||||
(
|
||||
'owned: $($oty:ident,)*
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||||
'interned: $($ity:ident,)*
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||||
) => {
|
||||
#[repr(C)]
|
||||
#[allow(non_snake_case)]
|
||||
pub struct HandleCounters {
|
||||
$($oty: AtomicUsize,)*
|
||||
$($ity: AtomicUsize,)*
|
||||
}
|
||||
|
||||
impl HandleCounters {
|
||||
// FIXME(eddyb) use a reference to the `static COUNTERS`, instead of
|
||||
// a wrapper `fn` pointer, once `const fn` can reference `static`s.
|
||||
extern "C" fn get() -> &'static Self {
|
||||
static COUNTERS: HandleCounters = HandleCounters {
|
||||
$($oty: AtomicUsize::new(1),)*
|
||||
$($ity: AtomicUsize::new(1),)*
|
||||
};
|
||||
&COUNTERS
|
||||
}
|
||||
}
|
||||
|
||||
// FIXME(eddyb) generate the definition of `HandleStore` in `server.rs`.
|
||||
#[repr(C)]
|
||||
#[allow(non_snake_case)]
|
||||
pub(super) struct HandleStore<S: server::Types> {
|
||||
$($oty: handle::OwnedStore<S::$oty>,)*
|
||||
$($ity: handle::InternedStore<S::$ity>,)*
|
||||
}
|
||||
|
||||
impl<S: server::Types> HandleStore<S> {
|
||||
pub(super) fn new(handle_counters: &'static HandleCounters) -> Self {
|
||||
HandleStore {
|
||||
$($oty: handle::OwnedStore::new(&handle_counters.$oty),)*
|
||||
$($ity: handle::InternedStore::new(&handle_counters.$ity),)*
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
$(
|
||||
#[repr(C)]
|
||||
pub(crate) struct $oty {
|
||||
handle: handle::Handle,
|
||||
// Prevent Send and Sync impls. `!Send`/`!Sync` is the usual
|
||||
// way of doing this, but that requires unstable features.
|
||||
// rust-analyzer uses this code and avoids unstable features.
|
||||
_marker: PhantomData<*mut ()>,
|
||||
}
|
||||
|
||||
// Forward `Drop::drop` to the inherent `drop` method.
|
||||
impl Drop for $oty {
|
||||
fn drop(&mut self) {
|
||||
$oty {
|
||||
handle: self.handle,
|
||||
_marker: PhantomData,
|
||||
}.drop();
|
||||
}
|
||||
}
|
||||
|
||||
impl<S> Encode<S> for $oty {
|
||||
fn encode(self, w: &mut Writer, s: &mut S) {
|
||||
let handle = self.handle;
|
||||
mem::forget(self);
|
||||
handle.encode(w, s);
|
||||
}
|
||||
}
|
||||
|
||||
impl<S: server::Types> DecodeMut<'_, '_, HandleStore<server::MarkedTypes<S>>>
|
||||
for Marked<S::$oty, $oty>
|
||||
{
|
||||
fn decode(r: &mut Reader<'_>, s: &mut HandleStore<server::MarkedTypes<S>>) -> Self {
|
||||
s.$oty.take(handle::Handle::decode(r, &mut ()))
|
||||
}
|
||||
}
|
||||
|
||||
impl<S> Encode<S> for &$oty {
|
||||
fn encode(self, w: &mut Writer, s: &mut S) {
|
||||
self.handle.encode(w, s);
|
||||
}
|
||||
}
|
||||
|
||||
impl<'s, S: server::Types> Decode<'_, 's, HandleStore<server::MarkedTypes<S>>>
|
||||
for &'s Marked<S::$oty, $oty>
|
||||
{
|
||||
fn decode(r: &mut Reader<'_>, s: &'s HandleStore<server::MarkedTypes<S>>) -> Self {
|
||||
&s.$oty[handle::Handle::decode(r, &mut ())]
|
||||
}
|
||||
}
|
||||
|
||||
impl<S> Encode<S> for &mut $oty {
|
||||
fn encode(self, w: &mut Writer, s: &mut S) {
|
||||
self.handle.encode(w, s);
|
||||
}
|
||||
}
|
||||
|
||||
impl<'s, S: server::Types> DecodeMut<'_, 's, HandleStore<server::MarkedTypes<S>>>
|
||||
for &'s mut Marked<S::$oty, $oty>
|
||||
{
|
||||
fn decode(
|
||||
r: &mut Reader<'_>,
|
||||
s: &'s mut HandleStore<server::MarkedTypes<S>>
|
||||
) -> Self {
|
||||
&mut s.$oty[handle::Handle::decode(r, &mut ())]
|
||||
}
|
||||
}
|
||||
|
||||
impl<S: server::Types> Encode<HandleStore<server::MarkedTypes<S>>>
|
||||
for Marked<S::$oty, $oty>
|
||||
{
|
||||
fn encode(self, w: &mut Writer, s: &mut HandleStore<server::MarkedTypes<S>>) {
|
||||
s.$oty.alloc(self).encode(w, s);
|
||||
}
|
||||
}
|
||||
|
||||
impl<S> DecodeMut<'_, '_, S> for $oty {
|
||||
fn decode(r: &mut Reader<'_>, s: &mut S) -> Self {
|
||||
$oty {
|
||||
handle: handle::Handle::decode(r, s),
|
||||
_marker: PhantomData,
|
||||
}
|
||||
}
|
||||
}
|
||||
)*
|
||||
|
||||
$(
|
||||
#[repr(C)]
|
||||
#[derive(Copy, Clone, PartialEq, Eq, Hash)]
|
||||
pub(crate) struct $ity {
|
||||
handle: handle::Handle,
|
||||
// Prevent Send and Sync impls. `!Send`/`!Sync` is the usual
|
||||
// way of doing this, but that requires unstable features.
|
||||
// rust-analyzer uses this code and avoids unstable features.
|
||||
_marker: PhantomData<*mut ()>,
|
||||
}
|
||||
|
||||
impl<S> Encode<S> for $ity {
|
||||
fn encode(self, w: &mut Writer, s: &mut S) {
|
||||
self.handle.encode(w, s);
|
||||
}
|
||||
}
|
||||
|
||||
impl<S: server::Types> DecodeMut<'_, '_, HandleStore<server::MarkedTypes<S>>>
|
||||
for Marked<S::$ity, $ity>
|
||||
{
|
||||
fn decode(r: &mut Reader<'_>, s: &mut HandleStore<server::MarkedTypes<S>>) -> Self {
|
||||
s.$ity.copy(handle::Handle::decode(r, &mut ()))
|
||||
}
|
||||
}
|
||||
|
||||
impl<S: server::Types> Encode<HandleStore<server::MarkedTypes<S>>>
|
||||
for Marked<S::$ity, $ity>
|
||||
{
|
||||
fn encode(self, w: &mut Writer, s: &mut HandleStore<server::MarkedTypes<S>>) {
|
||||
s.$ity.alloc(self).encode(w, s);
|
||||
}
|
||||
}
|
||||
|
||||
impl<S> DecodeMut<'_, '_, S> for $ity {
|
||||
fn decode(r: &mut Reader<'_>, s: &mut S) -> Self {
|
||||
$ity {
|
||||
handle: handle::Handle::decode(r, s),
|
||||
_marker: PhantomData,
|
||||
}
|
||||
}
|
||||
}
|
||||
)*
|
||||
}
|
||||
}
|
||||
define_handles! {
|
||||
'owned:
|
||||
FreeFunctions,
|
||||
TokenStream,
|
||||
Literal,
|
||||
SourceFile,
|
||||
MultiSpan,
|
||||
Diagnostic,
|
||||
|
||||
'interned:
|
||||
Ident,
|
||||
Span,
|
||||
}
|
||||
|
||||
// FIXME(eddyb) generate these impls by pattern-matching on the
|
||||
// names of methods - also could use the presence of `fn drop`
|
||||
// to distinguish between 'owned and 'interned, above.
|
||||
// Alternatively, special "modes" could be listed of types in with_api
|
||||
// instead of pattern matching on methods, here and in server decl.
|
||||
|
||||
impl Clone for TokenStream {
|
||||
fn clone(&self) -> Self {
|
||||
self.clone()
|
||||
}
|
||||
}
|
||||
|
||||
impl Clone for Literal {
|
||||
fn clone(&self) -> Self {
|
||||
self.clone()
|
||||
}
|
||||
}
|
||||
|
||||
impl fmt::Debug for Literal {
|
||||
fn fmt(&self, f: &mut fmt::Formatter<'_>) -> fmt::Result {
|
||||
f.debug_struct("Literal")
|
||||
// format the kind without quotes, as in `kind: Float`
|
||||
.field("kind", &format_args!("{}", &self.debug_kind()))
|
||||
.field("symbol", &self.symbol())
|
||||
// format `Some("...")` on one line even in {:#?} mode
|
||||
.field("suffix", &format_args!("{:?}", &self.suffix()))
|
||||
.field("span", &self.span())
|
||||
.finish()
|
||||
}
|
||||
}
|
||||
|
||||
impl Clone for SourceFile {
|
||||
fn clone(&self) -> Self {
|
||||
self.clone()
|
||||
}
|
||||
}
|
||||
|
||||
impl Span {
|
||||
pub(crate) fn def_site() -> Span {
|
||||
Bridge::with(|bridge| bridge.globals.def_site)
|
||||
}
|
||||
|
||||
pub(crate) fn call_site() -> Span {
|
||||
Bridge::with(|bridge| bridge.globals.call_site)
|
||||
}
|
||||
|
||||
pub(crate) fn mixed_site() -> Span {
|
||||
Bridge::with(|bridge| bridge.globals.mixed_site)
|
||||
}
|
||||
}
|
||||
|
||||
impl fmt::Debug for Span {
|
||||
fn fmt(&self, f: &mut fmt::Formatter<'_>) -> fmt::Result {
|
||||
f.write_str(&self.debug())
|
||||
}
|
||||
}
|
||||
|
||||
macro_rules! define_client_side {
|
||||
($($name:ident {
|
||||
$(fn $method:ident($($arg:ident: $arg_ty:ty),* $(,)?) $(-> $ret_ty:ty)*;)*
|
||||
}),* $(,)?) => {
|
||||
$(impl $name {
|
||||
$(pub(crate) fn $method($($arg: $arg_ty),*) $(-> $ret_ty)* {
|
||||
Bridge::with(|bridge| {
|
||||
let mut buf = bridge.cached_buffer.take();
|
||||
|
||||
buf.clear();
|
||||
api_tags::Method::$name(api_tags::$name::$method).encode(&mut buf, &mut ());
|
||||
reverse_encode!(buf; $($arg),*);
|
||||
|
||||
buf = bridge.dispatch.call(buf);
|
||||
|
||||
let r = Result::<_, PanicMessage>::decode(&mut &buf[..], &mut ());
|
||||
|
||||
bridge.cached_buffer = buf;
|
||||
|
||||
r.unwrap_or_else(|e| panic::resume_unwind(e.into()))
|
||||
})
|
||||
})*
|
||||
})*
|
||||
}
|
||||
}
|
||||
with_api!(self, self, define_client_side);
|
||||
|
||||
struct Bridge<'a> {
|
||||
/// Reusable buffer (only `clear`-ed, never shrunk), primarily
|
||||
/// used for making requests.
|
||||
cached_buffer: Buffer,
|
||||
|
||||
/// Server-side function that the client uses to make requests.
|
||||
dispatch: closure::Closure<'a, Buffer, Buffer>,
|
||||
|
||||
/// Provided globals for this macro expansion.
|
||||
globals: ExpnGlobals<Span>,
|
||||
}
|
||||
|
||||
enum BridgeState<'a> {
|
||||
/// No server is currently connected to this client.
|
||||
NotConnected,
|
||||
|
||||
/// A server is connected and available for requests.
|
||||
Connected(Bridge<'a>),
|
||||
|
||||
/// Access to the bridge is being exclusively acquired
|
||||
/// (e.g., during `BridgeState::with`).
|
||||
InUse,
|
||||
}
|
||||
|
||||
enum BridgeStateL {}
|
||||
|
||||
impl<'a> scoped_cell::ApplyL<'a> for BridgeStateL {
|
||||
type Out = BridgeState<'a>;
|
||||
}
|
||||
|
||||
thread_local! {
|
||||
static BRIDGE_STATE: scoped_cell::ScopedCell<BridgeStateL> =
|
||||
scoped_cell::ScopedCell::new(BridgeState::NotConnected);
|
||||
}
|
||||
|
||||
impl BridgeState<'_> {
|
||||
/// Take exclusive control of the thread-local
|
||||
/// `BridgeState`, and pass it to `f`, mutably.
|
||||
/// The state will be restored after `f` exits, even
|
||||
/// by panic, including modifications made to it by `f`.
|
||||
///
|
||||
/// N.B., while `f` is running, the thread-local state
|
||||
/// is `BridgeState::InUse`.
|
||||
fn with<R>(f: impl FnOnce(&mut BridgeState<'_>) -> R) -> R {
|
||||
BRIDGE_STATE.with(|state| {
|
||||
state.replace(BridgeState::InUse, |mut state| {
|
||||
// FIXME(#52812) pass `f` directly to `replace` when `RefMutL` is gone
|
||||
f(&mut *state)
|
||||
})
|
||||
})
|
||||
}
|
||||
}
|
||||
|
||||
impl Bridge<'_> {
|
||||
fn with<R>(f: impl FnOnce(&mut Bridge<'_>) -> R) -> R {
|
||||
BridgeState::with(|state| match state {
|
||||
BridgeState::NotConnected => {
|
||||
panic!("procedural macro API is used outside of a procedural macro");
|
||||
}
|
||||
BridgeState::InUse => {
|
||||
panic!("procedural macro API is used while it's already in use");
|
||||
}
|
||||
BridgeState::Connected(bridge) => f(bridge),
|
||||
})
|
||||
}
|
||||
}
|
||||
|
||||
pub(crate) fn is_available() -> bool {
|
||||
BridgeState::with(|state| match state {
|
||||
BridgeState::Connected(_) | BridgeState::InUse => true,
|
||||
BridgeState::NotConnected => false,
|
||||
})
|
||||
}
|
||||
|
||||
/// A client-side RPC entry-point, which may be using a different `proc_macro`
|
||||
/// from the one used by the server, but can be invoked compatibly.
|
||||
///
|
||||
/// Note that the (phantom) `I` ("input") and `O` ("output") type parameters
|
||||
/// decorate the `Client<I, O>` with the RPC "interface" of the entry-point, but
|
||||
/// do not themselves participate in ABI, at all, only facilitate type-checking.
|
||||
///
|
||||
/// E.g. `Client<TokenStream, TokenStream>` is the common proc macro interface,
|
||||
/// used for `#[proc_macro] fn foo(input: TokenStream) -> TokenStream`,
|
||||
/// indicating that the RPC input and output will be serialized token streams,
|
||||
/// and forcing the use of APIs that take/return `S::TokenStream`, server-side.
|
||||
#[repr(C)]
|
||||
pub struct Client<I, O> {
|
||||
// FIXME(eddyb) use a reference to the `static COUNTERS`, instead of
|
||||
// a wrapper `fn` pointer, once `const fn` can reference `static`s.
|
||||
pub(super) get_handle_counters: extern "C" fn() -> &'static HandleCounters,
|
||||
|
||||
pub(super) run: extern "C" fn(BridgeConfig<'_>) -> Buffer,
|
||||
|
||||
pub(super) _marker: PhantomData<fn(I) -> O>,
|
||||
}
|
||||
|
||||
impl<I, O> Copy for Client<I, O> {}
|
||||
impl<I, O> Clone for Client<I, O> {
|
||||
fn clone(&self) -> Self {
|
||||
*self
|
||||
}
|
||||
}
|
||||
|
||||
fn maybe_install_panic_hook(force_show_panics: bool) {
|
||||
// Hide the default panic output within `proc_macro` expansions.
|
||||
// NB. the server can't do this because it may use a different libstd.
|
||||
static HIDE_PANICS_DURING_EXPANSION: Once = Once::new();
|
||||
HIDE_PANICS_DURING_EXPANSION.call_once(|| {
|
||||
let prev = panic::take_hook();
|
||||
panic::set_hook(Box::new(move |info| {
|
||||
let show = BridgeState::with(|state| match state {
|
||||
BridgeState::NotConnected => true,
|
||||
BridgeState::Connected(_) | BridgeState::InUse => force_show_panics,
|
||||
});
|
||||
if show {
|
||||
prev(info)
|
||||
}
|
||||
}));
|
||||
});
|
||||
}
|
||||
|
||||
/// Client-side helper for handling client panics, entering the bridge,
|
||||
/// deserializing input and serializing output.
|
||||
// FIXME(eddyb) maybe replace `Bridge::enter` with this?
|
||||
fn run_client<A: for<'a, 's> DecodeMut<'a, 's, ()>, R: Encode<()>>(
|
||||
config: BridgeConfig<'_>,
|
||||
f: impl FnOnce(A) -> R,
|
||||
) -> Buffer {
|
||||
let BridgeConfig { input: mut buf, dispatch, force_show_panics, .. } = config;
|
||||
|
||||
panic::catch_unwind(panic::AssertUnwindSafe(|| {
|
||||
maybe_install_panic_hook(force_show_panics);
|
||||
|
||||
let reader = &mut &buf[..];
|
||||
let (globals, input) = <(ExpnGlobals<Span>, A)>::decode(reader, &mut ());
|
||||
|
||||
// Put the buffer we used for input back in the `Bridge` for requests.
|
||||
let new_state =
|
||||
BridgeState::Connected(Bridge { cached_buffer: buf.take(), dispatch, globals });
|
||||
|
||||
BRIDGE_STATE.with(|state| {
|
||||
state.set(new_state, || {
|
||||
let output = f(input);
|
||||
|
||||
// Take the `cached_buffer` back out, for the output value.
|
||||
buf = Bridge::with(|bridge| bridge.cached_buffer.take());
|
||||
|
||||
// HACK(eddyb) Separate encoding a success value (`Ok(output)`)
|
||||
// from encoding a panic (`Err(e: PanicMessage)`) to avoid
|
||||
// having handles outside the `bridge.enter(|| ...)` scope, and
|
||||
// to catch panics that could happen while encoding the success.
|
||||
//
|
||||
// Note that panics should be impossible beyond this point, but
|
||||
// this is defensively trying to avoid any accidental panicking
|
||||
// reaching the `extern "C"` (which should `abort` but might not
|
||||
// at the moment, so this is also potentially preventing UB).
|
||||
buf.clear();
|
||||
Ok::<_, ()>(output).encode(&mut buf, &mut ());
|
||||
})
|
||||
})
|
||||
}))
|
||||
.map_err(PanicMessage::from)
|
||||
.unwrap_or_else(|e| {
|
||||
buf.clear();
|
||||
Err::<(), _>(e).encode(&mut buf, &mut ());
|
||||
});
|
||||
buf
|
||||
}
|
||||
|
||||
impl Client<super::super::TokenStream, super::super::TokenStream> {
|
||||
pub const fn expand1(
|
||||
f: impl Fn(super::super::TokenStream) -> super::super::TokenStream + Copy,
|
||||
) -> Self {
|
||||
Client {
|
||||
get_handle_counters: HandleCounters::get,
|
||||
run: super::selfless_reify::reify_to_extern_c_fn_hrt_bridge(move |bridge| {
|
||||
run_client(bridge, |input| f(super::super::TokenStream(input)).0)
|
||||
}),
|
||||
_marker: PhantomData,
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
impl Client<(super::super::TokenStream, super::super::TokenStream), super::super::TokenStream> {
|
||||
pub const fn expand2(
|
||||
f: impl Fn(super::super::TokenStream, super::super::TokenStream) -> super::super::TokenStream
|
||||
+ Copy,
|
||||
) -> Self {
|
||||
Client {
|
||||
get_handle_counters: HandleCounters::get,
|
||||
run: super::selfless_reify::reify_to_extern_c_fn_hrt_bridge(move |bridge| {
|
||||
run_client(bridge, |(input, input2)| {
|
||||
f(super::super::TokenStream(input), super::super::TokenStream(input2)).0
|
||||
})
|
||||
}),
|
||||
_marker: PhantomData,
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
#[repr(C)]
|
||||
#[derive(Copy, Clone)]
|
||||
pub enum ProcMacro {
|
||||
CustomDerive {
|
||||
trait_name: &'static str,
|
||||
attributes: &'static [&'static str],
|
||||
client: Client<super::super::TokenStream, super::super::TokenStream>,
|
||||
},
|
||||
|
||||
Attr {
|
||||
name: &'static str,
|
||||
client: Client<
|
||||
(super::super::TokenStream, super::super::TokenStream),
|
||||
super::super::TokenStream,
|
||||
>,
|
||||
},
|
||||
|
||||
Bang {
|
||||
name: &'static str,
|
||||
client: Client<super::super::TokenStream, super::super::TokenStream>,
|
||||
},
|
||||
}
|
||||
|
||||
impl ProcMacro {
|
||||
pub fn name(&self) -> &'static str {
|
||||
match self {
|
||||
ProcMacro::CustomDerive { trait_name, .. } => trait_name,
|
||||
ProcMacro::Attr { name, .. } => name,
|
||||
ProcMacro::Bang { name, .. } => name,
|
||||
}
|
||||
}
|
||||
|
||||
pub const fn custom_derive(
|
||||
trait_name: &'static str,
|
||||
attributes: &'static [&'static str],
|
||||
expand: impl Fn(super::super::TokenStream) -> super::super::TokenStream + Copy,
|
||||
) -> Self {
|
||||
ProcMacro::CustomDerive { trait_name, attributes, client: Client::expand1(expand) }
|
||||
}
|
||||
|
||||
pub const fn attr(
|
||||
name: &'static str,
|
||||
expand: impl Fn(super::super::TokenStream, super::super::TokenStream) -> super::super::TokenStream
|
||||
+ Copy,
|
||||
) -> Self {
|
||||
ProcMacro::Attr { name, client: Client::expand2(expand) }
|
||||
}
|
||||
|
||||
pub const fn bang(
|
||||
name: &'static str,
|
||||
expand: impl Fn(super::super::TokenStream) -> super::super::TokenStream + Copy,
|
||||
) -> Self {
|
||||
ProcMacro::Bang { name, client: Client::expand1(expand) }
|
||||
}
|
||||
}
|
||||
|
|
@ -0,0 +1,32 @@
|
|||
//! Closure type (equivalent to `&mut dyn FnMut(A) -> R`) that's `repr(C)`.
|
||||
|
||||
use std::marker::PhantomData;
|
||||
|
||||
#[repr(C)]
|
||||
pub struct Closure<'a, A, R> {
|
||||
call: unsafe extern "C" fn(*mut Env, A) -> R,
|
||||
env: *mut Env,
|
||||
// Prevent Send and Sync impls. `!Send`/`!Sync` is the usual way of doing
|
||||
// this, but that requires unstable features. rust-analyzer uses this code
|
||||
// and avoids unstable features.
|
||||
//
|
||||
// The `'a` lifetime parameter represents the lifetime of `Env`.
|
||||
_marker: PhantomData<*mut &'a mut ()>,
|
||||
}
|
||||
|
||||
struct Env;
|
||||
|
||||
impl<'a, A, R, F: FnMut(A) -> R> From<&'a mut F> for Closure<'a, A, R> {
|
||||
fn from(f: &'a mut F) -> Self {
|
||||
unsafe extern "C" fn call<A, R, F: FnMut(A) -> R>(env: *mut Env, arg: A) -> R {
|
||||
(*(env as *mut _ as *mut F))(arg)
|
||||
}
|
||||
Closure { call: call::<A, R, F>, env: f as *mut _ as *mut Env, _marker: PhantomData }
|
||||
}
|
||||
}
|
||||
|
||||
impl<'a, A, R> Closure<'a, A, R> {
|
||||
pub fn call(&mut self, arg: A) -> R {
|
||||
unsafe { (self.call)(self.env, arg) }
|
||||
}
|
||||
}
|
||||
|
|
@ -0,0 +1,89 @@
|
|||
//! Server-side handles and storage for per-handle data.
|
||||
|
||||
use std::collections::{BTreeMap, HashMap};
|
||||
use std::hash::{BuildHasher, Hash};
|
||||
use std::num::NonZeroU32;
|
||||
use std::ops::{Index, IndexMut};
|
||||
use std::sync::atomic::{AtomicUsize, Ordering};
|
||||
|
||||
pub(super) type Handle = NonZeroU32;
|
||||
|
||||
/// A store that associates values of type `T` with numeric handles. A value can
|
||||
/// be looked up using its handle.
|
||||
pub(super) struct OwnedStore<T: 'static> {
|
||||
counter: &'static AtomicUsize,
|
||||
data: BTreeMap<Handle, T>,
|
||||
}
|
||||
|
||||
impl<T> OwnedStore<T> {
|
||||
pub(super) fn new(counter: &'static AtomicUsize) -> Self {
|
||||
// Ensure the handle counter isn't 0, which would panic later,
|
||||
// when `NonZeroU32::new` (aka `Handle::new`) is called in `alloc`.
|
||||
assert_ne!(counter.load(Ordering::SeqCst), 0);
|
||||
|
||||
OwnedStore { counter, data: BTreeMap::new() }
|
||||
}
|
||||
}
|
||||
|
||||
impl<T> OwnedStore<T> {
|
||||
pub(super) fn alloc(&mut self, x: T) -> Handle {
|
||||
let counter = self.counter.fetch_add(1, Ordering::SeqCst);
|
||||
let handle = Handle::new(counter as u32).expect("`proc_macro` handle counter overflowed");
|
||||
assert!(self.data.insert(handle, x).is_none());
|
||||
handle
|
||||
}
|
||||
|
||||
pub(super) fn take(&mut self, h: Handle) -> T {
|
||||
self.data.remove(&h).expect("use-after-free in `proc_macro` handle")
|
||||
}
|
||||
}
|
||||
|
||||
impl<T> Index<Handle> for OwnedStore<T> {
|
||||
type Output = T;
|
||||
fn index(&self, h: Handle) -> &T {
|
||||
self.data.get(&h).expect("use-after-free in `proc_macro` handle")
|
||||
}
|
||||
}
|
||||
|
||||
impl<T> IndexMut<Handle> for OwnedStore<T> {
|
||||
fn index_mut(&mut self, h: Handle) -> &mut T {
|
||||
self.data.get_mut(&h).expect("use-after-free in `proc_macro` handle")
|
||||
}
|
||||
}
|
||||
|
||||
// HACK(eddyb) deterministic `std::collections::hash_map::RandomState` replacement
|
||||
// that doesn't require adding any dependencies to `proc_macro` (like `rustc-hash`).
|
||||
#[derive(Clone)]
|
||||
struct NonRandomState;
|
||||
|
||||
impl BuildHasher for NonRandomState {
|
||||
type Hasher = std::collections::hash_map::DefaultHasher;
|
||||
#[inline]
|
||||
fn build_hasher(&self) -> Self::Hasher {
|
||||
Self::Hasher::new()
|
||||
}
|
||||
}
|
||||
|
||||
/// Like `OwnedStore`, but avoids storing any value more than once.
|
||||
pub(super) struct InternedStore<T: 'static> {
|
||||
owned: OwnedStore<T>,
|
||||
interner: HashMap<T, Handle, NonRandomState>,
|
||||
}
|
||||
|
||||
impl<T: Copy + Eq + Hash> InternedStore<T> {
|
||||
pub(super) fn new(counter: &'static AtomicUsize) -> Self {
|
||||
InternedStore {
|
||||
owned: OwnedStore::new(counter),
|
||||
interner: HashMap::with_hasher(NonRandomState),
|
||||
}
|
||||
}
|
||||
|
||||
pub(super) fn alloc(&mut self, x: T) -> Handle {
|
||||
let owned = &mut self.owned;
|
||||
*self.interner.entry(x).or_insert_with(|| owned.alloc(x))
|
||||
}
|
||||
|
||||
pub(super) fn copy(&mut self, h: Handle) -> T {
|
||||
self.owned[h]
|
||||
}
|
||||
}
|
||||
493
crates/proc-macro-srv/src/abis/abi_1_64/proc_macro/bridge/mod.rs
Normal file
493
crates/proc-macro-srv/src/abis/abi_1_64/proc_macro/bridge/mod.rs
Normal file
|
|
@ -0,0 +1,493 @@
|
|||
//! Internal interface for communicating between a `proc_macro` client
|
||||
//! (a proc macro crate) and a `proc_macro` server (a compiler front-end).
|
||||
//!
|
||||
//! Serialization (with C ABI buffers) and unique integer handles are employed
|
||||
//! to allow safely interfacing between two copies of `proc_macro` built
|
||||
//! (from the same source) by different compilers with potentially mismatching
|
||||
//! Rust ABIs (e.g., stage0/bin/rustc vs stage1/bin/rustc during bootstrap).
|
||||
|
||||
#![deny(unsafe_code)]
|
||||
|
||||
pub use super::{Delimiter, Level, LineColumn, Spacing};
|
||||
use std::fmt;
|
||||
use std::hash::Hash;
|
||||
use std::marker;
|
||||
use std::mem;
|
||||
use std::ops::Bound;
|
||||
use std::panic;
|
||||
use std::sync::atomic::AtomicUsize;
|
||||
use std::sync::Once;
|
||||
use std::thread;
|
||||
|
||||
/// Higher-order macro describing the server RPC API, allowing automatic
|
||||
/// generation of type-safe Rust APIs, both client-side and server-side.
|
||||
///
|
||||
/// `with_api!(MySelf, my_self, my_macro)` expands to:
|
||||
/// ```rust,ignore (pseudo-code)
|
||||
/// my_macro! {
|
||||
/// // ...
|
||||
/// Literal {
|
||||
/// // ...
|
||||
/// fn character(ch: char) -> MySelf::Literal;
|
||||
/// // ...
|
||||
/// fn span(my_self: &MySelf::Literal) -> MySelf::Span;
|
||||
/// fn set_span(my_self: &mut MySelf::Literal, span: MySelf::Span);
|
||||
/// },
|
||||
/// // ...
|
||||
/// }
|
||||
/// ```
|
||||
///
|
||||
/// The first two arguments serve to customize the arguments names
|
||||
/// and argument/return types, to enable several different usecases:
|
||||
///
|
||||
/// If `my_self` is just `self`, then each `fn` signature can be used
|
||||
/// as-is for a method. If it's anything else (`self_` in practice),
|
||||
/// then the signatures don't have a special `self` argument, and
|
||||
/// can, therefore, have a different one introduced.
|
||||
///
|
||||
/// If `MySelf` is just `Self`, then the types are only valid inside
|
||||
/// a trait or a trait impl, where the trait has associated types
|
||||
/// for each of the API types. If non-associated types are desired,
|
||||
/// a module name (`self` in practice) can be used instead of `Self`.
|
||||
macro_rules! with_api {
|
||||
($S:ident, $self:ident, $m:ident) => {
|
||||
$m! {
|
||||
FreeFunctions {
|
||||
fn drop($self: $S::FreeFunctions);
|
||||
fn track_env_var(var: &str, value: Option<&str>);
|
||||
fn track_path(path: &str);
|
||||
},
|
||||
TokenStream {
|
||||
fn drop($self: $S::TokenStream);
|
||||
fn clone($self: &$S::TokenStream) -> $S::TokenStream;
|
||||
fn is_empty($self: &$S::TokenStream) -> bool;
|
||||
fn expand_expr($self: &$S::TokenStream) -> Result<$S::TokenStream, ()>;
|
||||
fn from_str(src: &str) -> $S::TokenStream;
|
||||
fn to_string($self: &$S::TokenStream) -> String;
|
||||
fn from_token_tree(
|
||||
tree: TokenTree<$S::TokenStream, $S::Span, $S::Ident, $S::Literal>,
|
||||
) -> $S::TokenStream;
|
||||
fn concat_trees(
|
||||
base: Option<$S::TokenStream>,
|
||||
trees: Vec<TokenTree<$S::TokenStream, $S::Span, $S::Ident, $S::Literal>>,
|
||||
) -> $S::TokenStream;
|
||||
fn concat_streams(
|
||||
base: Option<$S::TokenStream>,
|
||||
streams: Vec<$S::TokenStream>,
|
||||
) -> $S::TokenStream;
|
||||
fn into_trees(
|
||||
$self: $S::TokenStream
|
||||
) -> Vec<TokenTree<$S::TokenStream, $S::Span, $S::Ident, $S::Literal>>;
|
||||
},
|
||||
Ident {
|
||||
fn new(string: &str, span: $S::Span, is_raw: bool) -> $S::Ident;
|
||||
fn span($self: $S::Ident) -> $S::Span;
|
||||
fn with_span($self: $S::Ident, span: $S::Span) -> $S::Ident;
|
||||
},
|
||||
Literal {
|
||||
fn drop($self: $S::Literal);
|
||||
fn clone($self: &$S::Literal) -> $S::Literal;
|
||||
fn from_str(s: &str) -> Result<$S::Literal, ()>;
|
||||
fn to_string($self: &$S::Literal) -> String;
|
||||
fn debug_kind($self: &$S::Literal) -> String;
|
||||
fn symbol($self: &$S::Literal) -> String;
|
||||
fn suffix($self: &$S::Literal) -> Option<String>;
|
||||
fn integer(n: &str) -> $S::Literal;
|
||||
fn typed_integer(n: &str, kind: &str) -> $S::Literal;
|
||||
fn float(n: &str) -> $S::Literal;
|
||||
fn f32(n: &str) -> $S::Literal;
|
||||
fn f64(n: &str) -> $S::Literal;
|
||||
fn string(string: &str) -> $S::Literal;
|
||||
fn character(ch: char) -> $S::Literal;
|
||||
fn byte_string(bytes: &[u8]) -> $S::Literal;
|
||||
fn span($self: &$S::Literal) -> $S::Span;
|
||||
fn set_span($self: &mut $S::Literal, span: $S::Span);
|
||||
fn subspan(
|
||||
$self: &$S::Literal,
|
||||
start: Bound<usize>,
|
||||
end: Bound<usize>,
|
||||
) -> Option<$S::Span>;
|
||||
},
|
||||
SourceFile {
|
||||
fn drop($self: $S::SourceFile);
|
||||
fn clone($self: &$S::SourceFile) -> $S::SourceFile;
|
||||
fn eq($self: &$S::SourceFile, other: &$S::SourceFile) -> bool;
|
||||
fn path($self: &$S::SourceFile) -> String;
|
||||
fn is_real($self: &$S::SourceFile) -> bool;
|
||||
},
|
||||
MultiSpan {
|
||||
fn drop($self: $S::MultiSpan);
|
||||
fn new() -> $S::MultiSpan;
|
||||
fn push($self: &mut $S::MultiSpan, span: $S::Span);
|
||||
},
|
||||
Diagnostic {
|
||||
fn drop($self: $S::Diagnostic);
|
||||
fn new(level: Level, msg: &str, span: $S::MultiSpan) -> $S::Diagnostic;
|
||||
fn sub(
|
||||
$self: &mut $S::Diagnostic,
|
||||
level: Level,
|
||||
msg: &str,
|
||||
span: $S::MultiSpan,
|
||||
);
|
||||
fn emit($self: $S::Diagnostic);
|
||||
},
|
||||
Span {
|
||||
fn debug($self: $S::Span) -> String;
|
||||
fn source_file($self: $S::Span) -> $S::SourceFile;
|
||||
fn parent($self: $S::Span) -> Option<$S::Span>;
|
||||
fn source($self: $S::Span) -> $S::Span;
|
||||
fn start($self: $S::Span) -> LineColumn;
|
||||
fn end($self: $S::Span) -> LineColumn;
|
||||
fn before($self: $S::Span) -> $S::Span;
|
||||
fn after($self: $S::Span) -> $S::Span;
|
||||
fn join($self: $S::Span, other: $S::Span) -> Option<$S::Span>;
|
||||
fn resolved_at($self: $S::Span, at: $S::Span) -> $S::Span;
|
||||
fn source_text($self: $S::Span) -> Option<String>;
|
||||
fn save_span($self: $S::Span) -> usize;
|
||||
fn recover_proc_macro_span(id: usize) -> $S::Span;
|
||||
},
|
||||
}
|
||||
};
|
||||
}
|
||||
|
||||
// FIXME(eddyb) this calls `encode` for each argument, but in reverse,
|
||||
// to match the ordering in `reverse_decode`.
|
||||
macro_rules! reverse_encode {
|
||||
($writer:ident;) => {};
|
||||
($writer:ident; $first:ident $(, $rest:ident)*) => {
|
||||
reverse_encode!($writer; $($rest),*);
|
||||
$first.encode(&mut $writer, &mut ());
|
||||
}
|
||||
}
|
||||
|
||||
// FIXME(eddyb) this calls `decode` for each argument, but in reverse,
|
||||
// to avoid borrow conflicts from borrows started by `&mut` arguments.
|
||||
macro_rules! reverse_decode {
|
||||
($reader:ident, $s:ident;) => {};
|
||||
($reader:ident, $s:ident; $first:ident: $first_ty:ty $(, $rest:ident: $rest_ty:ty)*) => {
|
||||
reverse_decode!($reader, $s; $($rest: $rest_ty),*);
|
||||
let $first = <$first_ty>::decode(&mut $reader, $s);
|
||||
}
|
||||
}
|
||||
|
||||
#[allow(unsafe_code)]
|
||||
mod buffer;
|
||||
#[forbid(unsafe_code)]
|
||||
pub mod client;
|
||||
#[allow(unsafe_code)]
|
||||
mod closure;
|
||||
#[forbid(unsafe_code)]
|
||||
mod handle;
|
||||
#[macro_use]
|
||||
#[forbid(unsafe_code)]
|
||||
mod rpc;
|
||||
#[allow(unsafe_code)]
|
||||
mod scoped_cell;
|
||||
#[allow(unsafe_code)]
|
||||
mod selfless_reify;
|
||||
#[forbid(unsafe_code)]
|
||||
pub mod server;
|
||||
|
||||
use buffer::Buffer;
|
||||
pub use rpc::PanicMessage;
|
||||
use rpc::{Decode, DecodeMut, Encode, Reader, Writer};
|
||||
|
||||
/// Configuration for establishing an active connection between a server and a
|
||||
/// client. The server creates the bridge config (`run_server` in `server.rs`),
|
||||
/// then passes it to the client through the function pointer in the `run` field
|
||||
/// of `client::Client`. The client constructs a local `Bridge` from the config
|
||||
/// in TLS during its execution (`Bridge::{enter, with}` in `client.rs`).
|
||||
#[repr(C)]
|
||||
pub struct BridgeConfig<'a> {
|
||||
/// Buffer used to pass initial input to the client.
|
||||
input: Buffer,
|
||||
|
||||
/// Server-side function that the client uses to make requests.
|
||||
dispatch: closure::Closure<'a, Buffer, Buffer>,
|
||||
|
||||
/// If 'true', always invoke the default panic hook
|
||||
force_show_panics: bool,
|
||||
|
||||
// Prevent Send and Sync impls. `!Send`/`!Sync` is the usual way of doing
|
||||
// this, but that requires unstable features. rust-analyzer uses this code
|
||||
// and avoids unstable features.
|
||||
_marker: marker::PhantomData<*mut ()>,
|
||||
}
|
||||
|
||||
#[forbid(unsafe_code)]
|
||||
#[allow(non_camel_case_types)]
|
||||
mod api_tags {
|
||||
use super::rpc::{DecodeMut, Encode, Reader, Writer};
|
||||
|
||||
macro_rules! declare_tags {
|
||||
($($name:ident {
|
||||
$(fn $method:ident($($arg:ident: $arg_ty:ty),* $(,)?) $(-> $ret_ty:ty)*;)*
|
||||
}),* $(,)?) => {
|
||||
$(
|
||||
pub(super) enum $name {
|
||||
$($method),*
|
||||
}
|
||||
rpc_encode_decode!(enum $name { $($method),* });
|
||||
)*
|
||||
|
||||
pub(super) enum Method {
|
||||
$($name($name)),*
|
||||
}
|
||||
rpc_encode_decode!(enum Method { $($name(m)),* });
|
||||
}
|
||||
}
|
||||
with_api!(self, self, declare_tags);
|
||||
}
|
||||
|
||||
/// Helper to wrap associated types to allow trait impl dispatch.
|
||||
/// That is, normally a pair of impls for `T::Foo` and `T::Bar`
|
||||
/// can overlap, but if the impls are, instead, on types like
|
||||
/// `Marked<T::Foo, Foo>` and `Marked<T::Bar, Bar>`, they can't.
|
||||
trait Mark {
|
||||
type Unmarked;
|
||||
fn mark(unmarked: Self::Unmarked) -> Self;
|
||||
}
|
||||
|
||||
/// Unwrap types wrapped by `Mark::mark` (see `Mark` for details).
|
||||
trait Unmark {
|
||||
type Unmarked;
|
||||
fn unmark(self) -> Self::Unmarked;
|
||||
}
|
||||
|
||||
#[derive(Copy, Clone, PartialEq, Eq, Hash)]
|
||||
struct Marked<T, M> {
|
||||
value: T,
|
||||
_marker: marker::PhantomData<M>,
|
||||
}
|
||||
|
||||
impl<T, M> Mark for Marked<T, M> {
|
||||
type Unmarked = T;
|
||||
fn mark(unmarked: Self::Unmarked) -> Self {
|
||||
Marked { value: unmarked, _marker: marker::PhantomData }
|
||||
}
|
||||
}
|
||||
impl<T, M> Unmark for Marked<T, M> {
|
||||
type Unmarked = T;
|
||||
fn unmark(self) -> Self::Unmarked {
|
||||
self.value
|
||||
}
|
||||
}
|
||||
impl<'a, T, M> Unmark for &'a Marked<T, M> {
|
||||
type Unmarked = &'a T;
|
||||
fn unmark(self) -> Self::Unmarked {
|
||||
&self.value
|
||||
}
|
||||
}
|
||||
impl<'a, T, M> Unmark for &'a mut Marked<T, M> {
|
||||
type Unmarked = &'a mut T;
|
||||
fn unmark(self) -> Self::Unmarked {
|
||||
&mut self.value
|
||||
}
|
||||
}
|
||||
|
||||
impl<T: Mark> Mark for Vec<T> {
|
||||
type Unmarked = Vec<T::Unmarked>;
|
||||
fn mark(unmarked: Self::Unmarked) -> Self {
|
||||
// Should be a no-op due to std's in-place collect optimizations.
|
||||
unmarked.into_iter().map(T::mark).collect()
|
||||
}
|
||||
}
|
||||
impl<T: Unmark> Unmark for Vec<T> {
|
||||
type Unmarked = Vec<T::Unmarked>;
|
||||
fn unmark(self) -> Self::Unmarked {
|
||||
// Should be a no-op due to std's in-place collect optimizations.
|
||||
self.into_iter().map(T::unmark).collect()
|
||||
}
|
||||
}
|
||||
|
||||
macro_rules! mark_noop {
|
||||
($($ty:ty),* $(,)?) => {
|
||||
$(
|
||||
impl Mark for $ty {
|
||||
type Unmarked = Self;
|
||||
fn mark(unmarked: Self::Unmarked) -> Self {
|
||||
unmarked
|
||||
}
|
||||
}
|
||||
impl Unmark for $ty {
|
||||
type Unmarked = Self;
|
||||
fn unmark(self) -> Self::Unmarked {
|
||||
self
|
||||
}
|
||||
}
|
||||
)*
|
||||
}
|
||||
}
|
||||
mark_noop! {
|
||||
(),
|
||||
bool,
|
||||
char,
|
||||
&'_ [u8],
|
||||
&'_ str,
|
||||
String,
|
||||
u8,
|
||||
usize,
|
||||
Delimiter,
|
||||
Level,
|
||||
LineColumn,
|
||||
Spacing,
|
||||
}
|
||||
|
||||
rpc_encode_decode!(
|
||||
enum Delimiter {
|
||||
Parenthesis,
|
||||
Brace,
|
||||
Bracket,
|
||||
None,
|
||||
}
|
||||
);
|
||||
rpc_encode_decode!(
|
||||
enum Level {
|
||||
Error,
|
||||
Warning,
|
||||
Note,
|
||||
Help,
|
||||
}
|
||||
);
|
||||
rpc_encode_decode!(struct LineColumn { line, column });
|
||||
rpc_encode_decode!(
|
||||
enum Spacing {
|
||||
Alone,
|
||||
Joint,
|
||||
}
|
||||
);
|
||||
|
||||
macro_rules! mark_compound {
|
||||
(struct $name:ident <$($T:ident),+> { $($field:ident),* $(,)? }) => {
|
||||
impl<$($T: Mark),+> Mark for $name <$($T),+> {
|
||||
type Unmarked = $name <$($T::Unmarked),+>;
|
||||
fn mark(unmarked: Self::Unmarked) -> Self {
|
||||
$name {
|
||||
$($field: Mark::mark(unmarked.$field)),*
|
||||
}
|
||||
}
|
||||
}
|
||||
impl<$($T: Unmark),+> Unmark for $name <$($T),+> {
|
||||
type Unmarked = $name <$($T::Unmarked),+>;
|
||||
fn unmark(self) -> Self::Unmarked {
|
||||
$name {
|
||||
$($field: Unmark::unmark(self.$field)),*
|
||||
}
|
||||
}
|
||||
}
|
||||
};
|
||||
(enum $name:ident <$($T:ident),+> { $($variant:ident $(($field:ident))?),* $(,)? }) => {
|
||||
impl<$($T: Mark),+> Mark for $name <$($T),+> {
|
||||
type Unmarked = $name <$($T::Unmarked),+>;
|
||||
fn mark(unmarked: Self::Unmarked) -> Self {
|
||||
match unmarked {
|
||||
$($name::$variant $(($field))? => {
|
||||
$name::$variant $((Mark::mark($field)))?
|
||||
})*
|
||||
}
|
||||
}
|
||||
}
|
||||
impl<$($T: Unmark),+> Unmark for $name <$($T),+> {
|
||||
type Unmarked = $name <$($T::Unmarked),+>;
|
||||
fn unmark(self) -> Self::Unmarked {
|
||||
match self {
|
||||
$($name::$variant $(($field))? => {
|
||||
$name::$variant $((Unmark::unmark($field)))?
|
||||
})*
|
||||
}
|
||||
}
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
macro_rules! compound_traits {
|
||||
($($t:tt)*) => {
|
||||
rpc_encode_decode!($($t)*);
|
||||
mark_compound!($($t)*);
|
||||
};
|
||||
}
|
||||
|
||||
compound_traits!(
|
||||
enum Bound<T> {
|
||||
Included(x),
|
||||
Excluded(x),
|
||||
Unbounded,
|
||||
}
|
||||
);
|
||||
|
||||
compound_traits!(
|
||||
enum Option<T> {
|
||||
Some(t),
|
||||
None,
|
||||
}
|
||||
);
|
||||
|
||||
compound_traits!(
|
||||
enum Result<T, E> {
|
||||
Ok(t),
|
||||
Err(e),
|
||||
}
|
||||
);
|
||||
|
||||
#[derive(Copy, Clone)]
|
||||
pub struct DelimSpan<Span> {
|
||||
pub open: Span,
|
||||
pub close: Span,
|
||||
pub entire: Span,
|
||||
}
|
||||
|
||||
impl<Span: Copy> DelimSpan<Span> {
|
||||
pub fn from_single(span: Span) -> Self {
|
||||
DelimSpan { open: span, close: span, entire: span }
|
||||
}
|
||||
}
|
||||
|
||||
compound_traits!(struct DelimSpan<Span> { open, close, entire });
|
||||
|
||||
#[derive(Clone)]
|
||||
pub struct Group<TokenStream, Span> {
|
||||
pub delimiter: Delimiter,
|
||||
pub stream: Option<TokenStream>,
|
||||
pub span: DelimSpan<Span>,
|
||||
}
|
||||
|
||||
compound_traits!(struct Group<TokenStream, Span> { delimiter, stream, span });
|
||||
|
||||
#[derive(Clone)]
|
||||
pub struct Punct<Span> {
|
||||
pub ch: u8,
|
||||
pub joint: bool,
|
||||
pub span: Span,
|
||||
}
|
||||
|
||||
compound_traits!(struct Punct<Span> { ch, joint, span });
|
||||
|
||||
#[derive(Clone)]
|
||||
pub enum TokenTree<TokenStream, Span, Ident, Literal> {
|
||||
Group(Group<TokenStream, Span>),
|
||||
Punct(Punct<Span>),
|
||||
Ident(Ident),
|
||||
Literal(Literal),
|
||||
}
|
||||
|
||||
compound_traits!(
|
||||
enum TokenTree<TokenStream, Span, Ident, Literal> {
|
||||
Group(tt),
|
||||
Punct(tt),
|
||||
Ident(tt),
|
||||
Literal(tt),
|
||||
}
|
||||
);
|
||||
|
||||
/// Globals provided alongside the initial inputs for a macro expansion.
|
||||
/// Provides values such as spans which are used frequently to avoid RPC.
|
||||
#[derive(Clone)]
|
||||
pub struct ExpnGlobals<Span> {
|
||||
pub def_site: Span,
|
||||
pub call_site: Span,
|
||||
pub mixed_site: Span,
|
||||
}
|
||||
|
||||
compound_traits!(
|
||||
struct ExpnGlobals<Span> { def_site, call_site, mixed_site }
|
||||
);
|
||||
304
crates/proc-macro-srv/src/abis/abi_1_64/proc_macro/bridge/rpc.rs
Normal file
304
crates/proc-macro-srv/src/abis/abi_1_64/proc_macro/bridge/rpc.rs
Normal file
|
|
@ -0,0 +1,304 @@
|
|||
//! Serialization for client-server communication.
|
||||
|
||||
use std::any::Any;
|
||||
use std::char;
|
||||
use std::io::Write;
|
||||
use std::num::NonZeroU32;
|
||||
use std::str;
|
||||
|
||||
pub(super) type Writer = super::buffer::Buffer;
|
||||
|
||||
pub(super) trait Encode<S>: Sized {
|
||||
fn encode(self, w: &mut Writer, s: &mut S);
|
||||
}
|
||||
|
||||
pub(super) type Reader<'a> = &'a [u8];
|
||||
|
||||
pub(super) trait Decode<'a, 's, S>: Sized {
|
||||
fn decode(r: &mut Reader<'a>, s: &'s S) -> Self;
|
||||
}
|
||||
|
||||
pub(super) trait DecodeMut<'a, 's, S>: Sized {
|
||||
fn decode(r: &mut Reader<'a>, s: &'s mut S) -> Self;
|
||||
}
|
||||
|
||||
macro_rules! rpc_encode_decode {
|
||||
(le $ty:ty) => {
|
||||
impl<S> Encode<S> for $ty {
|
||||
fn encode(self, w: &mut Writer, _: &mut S) {
|
||||
w.extend_from_array(&self.to_le_bytes());
|
||||
}
|
||||
}
|
||||
|
||||
impl<S> DecodeMut<'_, '_, S> for $ty {
|
||||
fn decode(r: &mut Reader<'_>, _: &mut S) -> Self {
|
||||
const N: usize = ::std::mem::size_of::<$ty>();
|
||||
|
||||
let mut bytes = [0; N];
|
||||
bytes.copy_from_slice(&r[..N]);
|
||||
*r = &r[N..];
|
||||
|
||||
Self::from_le_bytes(bytes)
|
||||
}
|
||||
}
|
||||
};
|
||||
(struct $name:ident $(<$($T:ident),+>)? { $($field:ident),* $(,)? }) => {
|
||||
impl<S, $($($T: Encode<S>),+)?> Encode<S> for $name $(<$($T),+>)? {
|
||||
fn encode(self, w: &mut Writer, s: &mut S) {
|
||||
$(self.$field.encode(w, s);)*
|
||||
}
|
||||
}
|
||||
|
||||
impl<'a, S, $($($T: for<'s> DecodeMut<'a, 's, S>),+)?> DecodeMut<'a, '_, S>
|
||||
for $name $(<$($T),+>)?
|
||||
{
|
||||
fn decode(r: &mut Reader<'a>, s: &mut S) -> Self {
|
||||
$name {
|
||||
$($field: DecodeMut::decode(r, s)),*
|
||||
}
|
||||
}
|
||||
}
|
||||
};
|
||||
(enum $name:ident $(<$($T:ident),+>)? { $($variant:ident $(($field:ident))*),* $(,)? }) => {
|
||||
impl<S, $($($T: Encode<S>),+)?> Encode<S> for $name $(<$($T),+>)? {
|
||||
fn encode(self, w: &mut Writer, s: &mut S) {
|
||||
// HACK(eddyb): `Tag` enum duplicated between the
|
||||
// two impls as there's no other place to stash it.
|
||||
#[allow(non_upper_case_globals)]
|
||||
mod tag {
|
||||
#[repr(u8)] enum Tag { $($variant),* }
|
||||
|
||||
$(pub const $variant: u8 = Tag::$variant as u8;)*
|
||||
}
|
||||
|
||||
match self {
|
||||
$($name::$variant $(($field))* => {
|
||||
tag::$variant.encode(w, s);
|
||||
$($field.encode(w, s);)*
|
||||
})*
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
impl<'a, S, $($($T: for<'s> DecodeMut<'a, 's, S>),+)?> DecodeMut<'a, '_, S>
|
||||
for $name $(<$($T),+>)?
|
||||
{
|
||||
fn decode(r: &mut Reader<'a>, s: &mut S) -> Self {
|
||||
// HACK(eddyb): `Tag` enum duplicated between the
|
||||
// two impls as there's no other place to stash it.
|
||||
#[allow(non_upper_case_globals)]
|
||||
mod tag {
|
||||
#[repr(u8)] enum Tag { $($variant),* }
|
||||
|
||||
$(pub const $variant: u8 = Tag::$variant as u8;)*
|
||||
}
|
||||
|
||||
match u8::decode(r, s) {
|
||||
$(tag::$variant => {
|
||||
$(let $field = DecodeMut::decode(r, s);)*
|
||||
$name::$variant $(($field))*
|
||||
})*
|
||||
_ => unreachable!(),
|
||||
}
|
||||
}
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
impl<S> Encode<S> for () {
|
||||
fn encode(self, _: &mut Writer, _: &mut S) {}
|
||||
}
|
||||
|
||||
impl<S> DecodeMut<'_, '_, S> for () {
|
||||
fn decode(_: &mut Reader<'_>, _: &mut S) -> Self {}
|
||||
}
|
||||
|
||||
impl<S> Encode<S> for u8 {
|
||||
fn encode(self, w: &mut Writer, _: &mut S) {
|
||||
w.push(self);
|
||||
}
|
||||
}
|
||||
|
||||
impl<S> DecodeMut<'_, '_, S> for u8 {
|
||||
fn decode(r: &mut Reader<'_>, _: &mut S) -> Self {
|
||||
let x = r[0];
|
||||
*r = &r[1..];
|
||||
x
|
||||
}
|
||||
}
|
||||
|
||||
rpc_encode_decode!(le u32);
|
||||
rpc_encode_decode!(le usize);
|
||||
|
||||
impl<S> Encode<S> for bool {
|
||||
fn encode(self, w: &mut Writer, s: &mut S) {
|
||||
(self as u8).encode(w, s);
|
||||
}
|
||||
}
|
||||
|
||||
impl<S> DecodeMut<'_, '_, S> for bool {
|
||||
fn decode(r: &mut Reader<'_>, s: &mut S) -> Self {
|
||||
match u8::decode(r, s) {
|
||||
0 => false,
|
||||
1 => true,
|
||||
_ => unreachable!(),
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
impl<S> Encode<S> for char {
|
||||
fn encode(self, w: &mut Writer, s: &mut S) {
|
||||
(self as u32).encode(w, s);
|
||||
}
|
||||
}
|
||||
|
||||
impl<S> DecodeMut<'_, '_, S> for char {
|
||||
fn decode(r: &mut Reader<'_>, s: &mut S) -> Self {
|
||||
char::from_u32(u32::decode(r, s)).unwrap()
|
||||
}
|
||||
}
|
||||
|
||||
impl<S> Encode<S> for NonZeroU32 {
|
||||
fn encode(self, w: &mut Writer, s: &mut S) {
|
||||
self.get().encode(w, s);
|
||||
}
|
||||
}
|
||||
|
||||
impl<S> DecodeMut<'_, '_, S> for NonZeroU32 {
|
||||
fn decode(r: &mut Reader<'_>, s: &mut S) -> Self {
|
||||
Self::new(u32::decode(r, s)).unwrap()
|
||||
}
|
||||
}
|
||||
|
||||
impl<S, A: Encode<S>, B: Encode<S>> Encode<S> for (A, B) {
|
||||
fn encode(self, w: &mut Writer, s: &mut S) {
|
||||
self.0.encode(w, s);
|
||||
self.1.encode(w, s);
|
||||
}
|
||||
}
|
||||
|
||||
impl<'a, S, A: for<'s> DecodeMut<'a, 's, S>, B: for<'s> DecodeMut<'a, 's, S>> DecodeMut<'a, '_, S>
|
||||
for (A, B)
|
||||
{
|
||||
fn decode(r: &mut Reader<'a>, s: &mut S) -> Self {
|
||||
(DecodeMut::decode(r, s), DecodeMut::decode(r, s))
|
||||
}
|
||||
}
|
||||
|
||||
impl<S> Encode<S> for &[u8] {
|
||||
fn encode(self, w: &mut Writer, s: &mut S) {
|
||||
self.len().encode(w, s);
|
||||
w.write_all(self).unwrap();
|
||||
}
|
||||
}
|
||||
|
||||
impl<'a, S> DecodeMut<'a, '_, S> for &'a [u8] {
|
||||
fn decode(r: &mut Reader<'a>, s: &mut S) -> Self {
|
||||
let len = usize::decode(r, s);
|
||||
let xs = &r[..len];
|
||||
*r = &r[len..];
|
||||
xs
|
||||
}
|
||||
}
|
||||
|
||||
impl<S> Encode<S> for &str {
|
||||
fn encode(self, w: &mut Writer, s: &mut S) {
|
||||
self.as_bytes().encode(w, s);
|
||||
}
|
||||
}
|
||||
|
||||
impl<'a, S> DecodeMut<'a, '_, S> for &'a str {
|
||||
fn decode(r: &mut Reader<'a>, s: &mut S) -> Self {
|
||||
str::from_utf8(<&[u8]>::decode(r, s)).unwrap()
|
||||
}
|
||||
}
|
||||
|
||||
impl<S> Encode<S> for String {
|
||||
fn encode(self, w: &mut Writer, s: &mut S) {
|
||||
self[..].encode(w, s);
|
||||
}
|
||||
}
|
||||
|
||||
impl<S> DecodeMut<'_, '_, S> for String {
|
||||
fn decode(r: &mut Reader<'_>, s: &mut S) -> Self {
|
||||
<&str>::decode(r, s).to_string()
|
||||
}
|
||||
}
|
||||
|
||||
impl<S, T: Encode<S>> Encode<S> for Vec<T> {
|
||||
fn encode(self, w: &mut Writer, s: &mut S) {
|
||||
self.len().encode(w, s);
|
||||
for x in self {
|
||||
x.encode(w, s);
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
impl<'a, S, T: for<'s> DecodeMut<'a, 's, S>> DecodeMut<'a, '_, S> for Vec<T> {
|
||||
fn decode(r: &mut Reader<'a>, s: &mut S) -> Self {
|
||||
let len = usize::decode(r, s);
|
||||
let mut vec = Vec::with_capacity(len);
|
||||
for _ in 0..len {
|
||||
vec.push(T::decode(r, s));
|
||||
}
|
||||
vec
|
||||
}
|
||||
}
|
||||
|
||||
/// Simplified version of panic payloads, ignoring
|
||||
/// types other than `&'static str` and `String`.
|
||||
pub enum PanicMessage {
|
||||
StaticStr(&'static str),
|
||||
String(String),
|
||||
Unknown,
|
||||
}
|
||||
|
||||
impl From<Box<dyn Any + Send>> for PanicMessage {
|
||||
fn from(payload: Box<dyn Any + Send + 'static>) -> Self {
|
||||
if let Some(s) = payload.downcast_ref::<&'static str>() {
|
||||
return PanicMessage::StaticStr(s);
|
||||
}
|
||||
if let Ok(s) = payload.downcast::<String>() {
|
||||
return PanicMessage::String(*s);
|
||||
}
|
||||
PanicMessage::Unknown
|
||||
}
|
||||
}
|
||||
|
||||
impl Into<Box<dyn Any + Send>> for PanicMessage {
|
||||
fn into(self) -> Box<dyn Any + Send> {
|
||||
match self {
|
||||
PanicMessage::StaticStr(s) => Box::new(s),
|
||||
PanicMessage::String(s) => Box::new(s),
|
||||
PanicMessage::Unknown => {
|
||||
struct UnknownPanicMessage;
|
||||
Box::new(UnknownPanicMessage)
|
||||
}
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
impl PanicMessage {
|
||||
pub fn as_str(&self) -> Option<&str> {
|
||||
match self {
|
||||
PanicMessage::StaticStr(s) => Some(s),
|
||||
PanicMessage::String(s) => Some(s),
|
||||
PanicMessage::Unknown => None,
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
impl<S> Encode<S> for PanicMessage {
|
||||
fn encode(self, w: &mut Writer, s: &mut S) {
|
||||
self.as_str().encode(w, s);
|
||||
}
|
||||
}
|
||||
|
||||
impl<S> DecodeMut<'_, '_, S> for PanicMessage {
|
||||
fn decode(r: &mut Reader<'_>, s: &mut S) -> Self {
|
||||
match Option::<String>::decode(r, s) {
|
||||
Some(s) => PanicMessage::String(s),
|
||||
None => PanicMessage::Unknown,
|
||||
}
|
||||
}
|
||||
}
|
||||
|
|
@ -0,0 +1,81 @@
|
|||
//! `Cell` variant for (scoped) existential lifetimes.
|
||||
|
||||
use std::cell::Cell;
|
||||
use std::mem;
|
||||
use std::ops::{Deref, DerefMut};
|
||||
|
||||
/// Type lambda application, with a lifetime.
|
||||
#[allow(unused_lifetimes)]
|
||||
pub trait ApplyL<'a> {
|
||||
type Out;
|
||||
}
|
||||
|
||||
/// Type lambda taking a lifetime, i.e., `Lifetime -> Type`.
|
||||
pub trait LambdaL: for<'a> ApplyL<'a> {}
|
||||
|
||||
impl<T: for<'a> ApplyL<'a>> LambdaL for T {}
|
||||
|
||||
// HACK(eddyb) work around projection limitations with a newtype
|
||||
// FIXME(#52812) replace with `&'a mut <T as ApplyL<'b>>::Out`
|
||||
pub struct RefMutL<'a, 'b, T: LambdaL>(&'a mut <T as ApplyL<'b>>::Out);
|
||||
|
||||
impl<'a, 'b, T: LambdaL> Deref for RefMutL<'a, 'b, T> {
|
||||
type Target = <T as ApplyL<'b>>::Out;
|
||||
fn deref(&self) -> &Self::Target {
|
||||
self.0
|
||||
}
|
||||
}
|
||||
|
||||
impl<'a, 'b, T: LambdaL> DerefMut for RefMutL<'a, 'b, T> {
|
||||
fn deref_mut(&mut self) -> &mut Self::Target {
|
||||
self.0
|
||||
}
|
||||
}
|
||||
|
||||
pub struct ScopedCell<T: LambdaL>(Cell<<T as ApplyL<'static>>::Out>);
|
||||
|
||||
impl<T: LambdaL> ScopedCell<T> {
|
||||
pub const fn new(value: <T as ApplyL<'static>>::Out) -> Self {
|
||||
ScopedCell(Cell::new(value))
|
||||
}
|
||||
|
||||
/// Sets the value in `self` to `replacement` while
|
||||
/// running `f`, which gets the old value, mutably.
|
||||
/// The old value will be restored after `f` exits, even
|
||||
/// by panic, including modifications made to it by `f`.
|
||||
pub fn replace<'a, R>(
|
||||
&self,
|
||||
replacement: <T as ApplyL<'a>>::Out,
|
||||
f: impl for<'b, 'c> FnOnce(RefMutL<'b, 'c, T>) -> R,
|
||||
) -> R {
|
||||
/// Wrapper that ensures that the cell always gets filled
|
||||
/// (with the original state, optionally changed by `f`),
|
||||
/// even if `f` had panicked.
|
||||
struct PutBackOnDrop<'a, T: LambdaL> {
|
||||
cell: &'a ScopedCell<T>,
|
||||
value: Option<<T as ApplyL<'static>>::Out>,
|
||||
}
|
||||
|
||||
impl<'a, T: LambdaL> Drop for PutBackOnDrop<'a, T> {
|
||||
fn drop(&mut self) {
|
||||
self.cell.0.set(self.value.take().unwrap());
|
||||
}
|
||||
}
|
||||
|
||||
let mut put_back_on_drop = PutBackOnDrop {
|
||||
cell: self,
|
||||
value: Some(self.0.replace(unsafe {
|
||||
let erased = mem::transmute_copy(&replacement);
|
||||
mem::forget(replacement);
|
||||
erased
|
||||
})),
|
||||
};
|
||||
|
||||
f(RefMutL(put_back_on_drop.value.as_mut().unwrap()))
|
||||
}
|
||||
|
||||
/// Sets the value in `self` to `value` while running `f`.
|
||||
pub fn set<R>(&self, value: <T as ApplyL<'_>>::Out, f: impl FnOnce() -> R) -> R {
|
||||
self.replace(value, |_| f())
|
||||
}
|
||||
}
|
||||
|
|
@ -0,0 +1,84 @@
|
|||
//! Abstraction for creating `fn` pointers from any callable that *effectively*
|
||||
//! has the equivalent of implementing `Default`, even if the compiler neither
|
||||
//! provides `Default` nor allows reifying closures (i.e. creating `fn` pointers)
|
||||
//! other than those with absolutely no captures.
|
||||
//!
|
||||
//! More specifically, for a closure-like type to be "effectively `Default`":
|
||||
//! * it must be a ZST (zero-sized type): no information contained within, so
|
||||
//! that `Default`'s return value (if it were implemented) is unambiguous
|
||||
//! * it must be `Copy`: no captured "unique ZST tokens" or any other similar
|
||||
//! types that would make duplicating values at will unsound
|
||||
//! * combined with the ZST requirement, this confers a kind of "telecopy"
|
||||
//! ability: similar to `Copy`, but without keeping the value around, and
|
||||
//! instead "reconstructing" it (a noop given it's a ZST) when needed
|
||||
//! * it must be *provably* inhabited: no captured uninhabited types or any
|
||||
//! other types that cannot be constructed by the user of this abstraction
|
||||
//! * the proof is a value of the closure-like type itself, in a sense the
|
||||
//! "seed" for the "telecopy" process made possible by ZST + `Copy`
|
||||
//! * this requirement is the only reason an abstraction limited to a specific
|
||||
//! usecase is required: ZST + `Copy` can be checked with *at worst* a panic
|
||||
//! at the "attempted `::default()` call" time, but that doesn't guarantee
|
||||
//! that the value can be soundly created, and attempting to use the typical
|
||||
//! "proof ZST token" approach leads yet again to having a ZST + `Copy` type
|
||||
//! that is not proof of anything without a value (i.e. isomorphic to a
|
||||
//! newtype of the type it's trying to prove the inhabitation of)
|
||||
//!
|
||||
//! A more flexible (and safer) solution to the general problem could exist once
|
||||
//! `const`-generic parameters can have type parameters in their types:
|
||||
//!
|
||||
//! ```rust,ignore (needs future const-generics)
|
||||
//! extern "C" fn ffi_wrapper<
|
||||
//! A, R,
|
||||
//! F: Fn(A) -> R,
|
||||
//! const f: F, // <-- this `const`-generic is not yet allowed
|
||||
//! >(arg: A) -> R {
|
||||
//! f(arg)
|
||||
//! }
|
||||
//! ```
|
||||
|
||||
use std::mem;
|
||||
|
||||
// FIXME(eddyb) this could be `trait` impls except for the `const fn` requirement.
|
||||
macro_rules! define_reify_functions {
|
||||
($(
|
||||
fn $name:ident $(<$($param:ident),*>)?
|
||||
for $(extern $abi:tt)? fn($($arg:ident: $arg_ty:ty),*) -> $ret_ty:ty;
|
||||
)+) => {
|
||||
$(pub const fn $name<
|
||||
$($($param,)*)?
|
||||
F: Fn($($arg_ty),*) -> $ret_ty + Copy
|
||||
>(f: F) -> $(extern $abi)? fn($($arg_ty),*) -> $ret_ty {
|
||||
// FIXME(eddyb) describe the `F` type (e.g. via `type_name::<F>`) once panic
|
||||
// formatting becomes possible in `const fn`.
|
||||
assert!(mem::size_of::<F>() == 0, "selfless_reify: closure must be zero-sized");
|
||||
|
||||
$(extern $abi)? fn wrapper<
|
||||
$($($param,)*)?
|
||||
F: Fn($($arg_ty),*) -> $ret_ty + Copy
|
||||
>($($arg: $arg_ty),*) -> $ret_ty {
|
||||
let f = unsafe {
|
||||
// SAFETY: `F` satisfies all criteria for "out of thin air"
|
||||
// reconstructability (see module-level doc comment).
|
||||
mem::MaybeUninit::<F>::uninit().assume_init()
|
||||
};
|
||||
f($($arg),*)
|
||||
}
|
||||
let _f_proof = f;
|
||||
wrapper::<
|
||||
$($($param,)*)?
|
||||
F
|
||||
>
|
||||
})+
|
||||
}
|
||||
}
|
||||
|
||||
define_reify_functions! {
|
||||
fn _reify_to_extern_c_fn_unary<A, R> for extern "C" fn(arg: A) -> R;
|
||||
|
||||
// HACK(eddyb) this abstraction is used with `for<'a> fn(BridgeConfig<'a>)
|
||||
// -> T` but that doesn't work with just `reify_to_extern_c_fn_unary`
|
||||
// because of the `fn` pointer type being "higher-ranked" (i.e. the
|
||||
// `for<'a>` binder).
|
||||
// FIXME(eddyb) try to remove the lifetime from `BridgeConfig`, that'd help.
|
||||
fn reify_to_extern_c_fn_hrt_bridge<R> for extern "C" fn(bridge: super::BridgeConfig<'_>) -> R;
|
||||
}
|
||||
|
|
@ -0,0 +1,339 @@
|
|||
//! Server-side traits.
|
||||
|
||||
use super::*;
|
||||
|
||||
// FIXME(eddyb) generate the definition of `HandleStore` in `server.rs`.
|
||||
use super::client::HandleStore;
|
||||
|
||||
pub trait Types {
|
||||
type FreeFunctions: 'static;
|
||||
type TokenStream: 'static + Clone;
|
||||
type Ident: 'static + Copy + Eq + Hash;
|
||||
type Literal: 'static + Clone;
|
||||
type SourceFile: 'static + Clone;
|
||||
type MultiSpan: 'static;
|
||||
type Diagnostic: 'static;
|
||||
type Span: 'static + Copy + Eq + Hash;
|
||||
}
|
||||
|
||||
/// Declare an associated fn of one of the traits below, adding necessary
|
||||
/// default bodies.
|
||||
macro_rules! associated_fn {
|
||||
(fn drop(&mut self, $arg:ident: $arg_ty:ty)) =>
|
||||
(fn drop(&mut self, $arg: $arg_ty) { mem::drop($arg) });
|
||||
|
||||
(fn clone(&mut self, $arg:ident: $arg_ty:ty) -> $ret_ty:ty) =>
|
||||
(fn clone(&mut self, $arg: $arg_ty) -> $ret_ty { $arg.clone() });
|
||||
|
||||
($($item:tt)*) => ($($item)*;)
|
||||
}
|
||||
|
||||
macro_rules! declare_server_traits {
|
||||
($($name:ident {
|
||||
$(fn $method:ident($($arg:ident: $arg_ty:ty),* $(,)?) $(-> $ret_ty:ty)?;)*
|
||||
}),* $(,)?) => {
|
||||
$(pub trait $name: Types {
|
||||
$(associated_fn!(fn $method(&mut self, $($arg: $arg_ty),*) $(-> $ret_ty)?);)*
|
||||
})*
|
||||
|
||||
pub trait Server: Types $(+ $name)* {
|
||||
fn globals(&mut self) -> ExpnGlobals<Self::Span>;
|
||||
}
|
||||
}
|
||||
}
|
||||
with_api!(Self, self_, declare_server_traits);
|
||||
|
||||
pub(super) struct MarkedTypes<S: Types>(S);
|
||||
|
||||
impl<S: Server> Server for MarkedTypes<S> {
|
||||
fn globals(&mut self) -> ExpnGlobals<Self::Span> {
|
||||
<_>::mark(Server::globals(&mut self.0))
|
||||
}
|
||||
}
|
||||
|
||||
macro_rules! define_mark_types_impls {
|
||||
($($name:ident {
|
||||
$(fn $method:ident($($arg:ident: $arg_ty:ty),* $(,)?) $(-> $ret_ty:ty)?;)*
|
||||
}),* $(,)?) => {
|
||||
impl<S: Types> Types for MarkedTypes<S> {
|
||||
$(type $name = Marked<S::$name, client::$name>;)*
|
||||
}
|
||||
|
||||
$(impl<S: $name> $name for MarkedTypes<S> {
|
||||
$(fn $method(&mut self, $($arg: $arg_ty),*) $(-> $ret_ty)? {
|
||||
<_>::mark($name::$method(&mut self.0, $($arg.unmark()),*))
|
||||
})*
|
||||
})*
|
||||
}
|
||||
}
|
||||
with_api!(Self, self_, define_mark_types_impls);
|
||||
|
||||
struct Dispatcher<S: Types> {
|
||||
handle_store: HandleStore<S>,
|
||||
server: S,
|
||||
}
|
||||
|
||||
macro_rules! define_dispatcher_impl {
|
||||
($($name:ident {
|
||||
$(fn $method:ident($($arg:ident: $arg_ty:ty),* $(,)?) $(-> $ret_ty:ty)?;)*
|
||||
}),* $(,)?) => {
|
||||
// FIXME(eddyb) `pub` only for `ExecutionStrategy` below.
|
||||
pub trait DispatcherTrait {
|
||||
// HACK(eddyb) these are here to allow `Self::$name` to work below.
|
||||
$(type $name;)*
|
||||
fn dispatch(&mut self, buf: Buffer) -> Buffer;
|
||||
}
|
||||
|
||||
impl<S: Server> DispatcherTrait for Dispatcher<MarkedTypes<S>> {
|
||||
$(type $name = <MarkedTypes<S> as Types>::$name;)*
|
||||
fn dispatch(&mut self, mut buf: Buffer) -> Buffer {
|
||||
let Dispatcher { handle_store, server } = self;
|
||||
|
||||
let mut reader = &buf[..];
|
||||
match api_tags::Method::decode(&mut reader, &mut ()) {
|
||||
$(api_tags::Method::$name(m) => match m {
|
||||
$(api_tags::$name::$method => {
|
||||
let mut call_method = || {
|
||||
reverse_decode!(reader, handle_store; $($arg: $arg_ty),*);
|
||||
$name::$method(server, $($arg),*)
|
||||
};
|
||||
// HACK(eddyb) don't use `panic::catch_unwind` in a panic.
|
||||
// If client and server happen to use the same `libstd`,
|
||||
// `catch_unwind` asserts that the panic counter was 0,
|
||||
// even when the closure passed to it didn't panic.
|
||||
let r = if thread::panicking() {
|
||||
Ok(call_method())
|
||||
} else {
|
||||
panic::catch_unwind(panic::AssertUnwindSafe(call_method))
|
||||
.map_err(PanicMessage::from)
|
||||
};
|
||||
|
||||
buf.clear();
|
||||
r.encode(&mut buf, handle_store);
|
||||
})*
|
||||
}),*
|
||||
}
|
||||
buf
|
||||
}
|
||||
}
|
||||
}
|
||||
}
|
||||
with_api!(Self, self_, define_dispatcher_impl);
|
||||
|
||||
pub trait ExecutionStrategy {
|
||||
fn run_bridge_and_client(
|
||||
&self,
|
||||
dispatcher: &mut impl DispatcherTrait,
|
||||
input: Buffer,
|
||||
run_client: extern "C" fn(BridgeConfig<'_>) -> Buffer,
|
||||
force_show_panics: bool,
|
||||
) -> Buffer;
|
||||
}
|
||||
|
||||
pub struct SameThread;
|
||||
|
||||
impl ExecutionStrategy for SameThread {
|
||||
fn run_bridge_and_client(
|
||||
&self,
|
||||
dispatcher: &mut impl DispatcherTrait,
|
||||
input: Buffer,
|
||||
run_client: extern "C" fn(BridgeConfig<'_>) -> Buffer,
|
||||
force_show_panics: bool,
|
||||
) -> Buffer {
|
||||
let mut dispatch = |buf| dispatcher.dispatch(buf);
|
||||
|
||||
run_client(BridgeConfig {
|
||||
input,
|
||||
dispatch: (&mut dispatch).into(),
|
||||
force_show_panics,
|
||||
_marker: marker::PhantomData,
|
||||
})
|
||||
}
|
||||
}
|
||||
|
||||
// NOTE(eddyb) Two implementations are provided, the second one is a bit
|
||||
// faster but neither is anywhere near as fast as same-thread execution.
|
||||
|
||||
pub struct CrossThread1;
|
||||
|
||||
impl ExecutionStrategy for CrossThread1 {
|
||||
fn run_bridge_and_client(
|
||||
&self,
|
||||
dispatcher: &mut impl DispatcherTrait,
|
||||
input: Buffer,
|
||||
run_client: extern "C" fn(BridgeConfig<'_>) -> Buffer,
|
||||
force_show_panics: bool,
|
||||
) -> Buffer {
|
||||
use std::sync::mpsc::channel;
|
||||
|
||||
let (req_tx, req_rx) = channel();
|
||||
let (res_tx, res_rx) = channel();
|
||||
|
||||
let join_handle = thread::spawn(move || {
|
||||
let mut dispatch = |buf| {
|
||||
req_tx.send(buf).unwrap();
|
||||
res_rx.recv().unwrap()
|
||||
};
|
||||
|
||||
run_client(BridgeConfig {
|
||||
input,
|
||||
dispatch: (&mut dispatch).into(),
|
||||
force_show_panics,
|
||||
_marker: marker::PhantomData,
|
||||
})
|
||||
});
|
||||
|
||||
for b in req_rx {
|
||||
res_tx.send(dispatcher.dispatch(b)).unwrap();
|
||||
}
|
||||
|
||||
join_handle.join().unwrap()
|
||||
}
|
||||
}
|
||||
|
||||
pub struct CrossThread2;
|
||||
|
||||
impl ExecutionStrategy for CrossThread2 {
|
||||
fn run_bridge_and_client(
|
||||
&self,
|
||||
dispatcher: &mut impl DispatcherTrait,
|
||||
input: Buffer,
|
||||
run_client: extern "C" fn(BridgeConfig<'_>) -> Buffer,
|
||||
force_show_panics: bool,
|
||||
) -> Buffer {
|
||||
use std::sync::{Arc, Mutex};
|
||||
|
||||
enum State<T> {
|
||||
Req(T),
|
||||
Res(T),
|
||||
}
|
||||
|
||||
let mut state = Arc::new(Mutex::new(State::Res(Buffer::new())));
|
||||
|
||||
let server_thread = thread::current();
|
||||
let state2 = state.clone();
|
||||
let join_handle = thread::spawn(move || {
|
||||
let mut dispatch = |b| {
|
||||
*state2.lock().unwrap() = State::Req(b);
|
||||
server_thread.unpark();
|
||||
loop {
|
||||
thread::park();
|
||||
if let State::Res(b) = &mut *state2.lock().unwrap() {
|
||||
break b.take();
|
||||
}
|
||||
}
|
||||
};
|
||||
|
||||
let r = run_client(BridgeConfig {
|
||||
input,
|
||||
dispatch: (&mut dispatch).into(),
|
||||
force_show_panics,
|
||||
_marker: marker::PhantomData,
|
||||
});
|
||||
|
||||
// Wake up the server so it can exit the dispatch loop.
|
||||
drop(state2);
|
||||
server_thread.unpark();
|
||||
|
||||
r
|
||||
});
|
||||
|
||||
// Check whether `state2` was dropped, to know when to stop.
|
||||
while Arc::get_mut(&mut state).is_none() {
|
||||
thread::park();
|
||||
let mut b = match &mut *state.lock().unwrap() {
|
||||
State::Req(b) => b.take(),
|
||||
_ => continue,
|
||||
};
|
||||
b = dispatcher.dispatch(b.take());
|
||||
*state.lock().unwrap() = State::Res(b);
|
||||
join_handle.thread().unpark();
|
||||
}
|
||||
|
||||
join_handle.join().unwrap()
|
||||
}
|
||||
}
|
||||
|
||||
fn run_server<
|
||||
S: Server,
|
||||
I: Encode<HandleStore<MarkedTypes<S>>>,
|
||||
O: for<'a, 's> DecodeMut<'a, 's, HandleStore<MarkedTypes<S>>>,
|
||||
>(
|
||||
strategy: &impl ExecutionStrategy,
|
||||
handle_counters: &'static client::HandleCounters,
|
||||
server: S,
|
||||
input: I,
|
||||
run_client: extern "C" fn(BridgeConfig<'_>) -> Buffer,
|
||||
force_show_panics: bool,
|
||||
) -> Result<O, PanicMessage> {
|
||||
let mut dispatcher =
|
||||
Dispatcher { handle_store: HandleStore::new(handle_counters), server: MarkedTypes(server) };
|
||||
|
||||
let globals = dispatcher.server.globals();
|
||||
|
||||
let mut buf = Buffer::new();
|
||||
(globals, input).encode(&mut buf, &mut dispatcher.handle_store);
|
||||
|
||||
buf = strategy.run_bridge_and_client(&mut dispatcher, buf, run_client, force_show_panics);
|
||||
|
||||
Result::decode(&mut &buf[..], &mut dispatcher.handle_store)
|
||||
}
|
||||
|
||||
impl client::Client<super::super::TokenStream, super::super::TokenStream> {
|
||||
pub fn run<S>(
|
||||
&self,
|
||||
strategy: &impl ExecutionStrategy,
|
||||
server: S,
|
||||
input: S::TokenStream,
|
||||
force_show_panics: bool,
|
||||
) -> Result<S::TokenStream, PanicMessage>
|
||||
where
|
||||
S: Server,
|
||||
S::TokenStream: Default,
|
||||
{
|
||||
let client::Client { get_handle_counters, run, _marker } = *self;
|
||||
run_server(
|
||||
strategy,
|
||||
get_handle_counters(),
|
||||
server,
|
||||
<MarkedTypes<S> as Types>::TokenStream::mark(input),
|
||||
run,
|
||||
force_show_panics,
|
||||
)
|
||||
.map(|s| <Option<<MarkedTypes<S> as Types>::TokenStream>>::unmark(s).unwrap_or_default())
|
||||
}
|
||||
}
|
||||
|
||||
impl
|
||||
client::Client<
|
||||
(super::super::TokenStream, super::super::TokenStream),
|
||||
super::super::TokenStream,
|
||||
>
|
||||
{
|
||||
pub fn run<S>(
|
||||
&self,
|
||||
strategy: &impl ExecutionStrategy,
|
||||
server: S,
|
||||
input: S::TokenStream,
|
||||
input2: S::TokenStream,
|
||||
force_show_panics: bool,
|
||||
) -> Result<S::TokenStream, PanicMessage>
|
||||
where
|
||||
S: Server,
|
||||
S::TokenStream: Default,
|
||||
{
|
||||
let client::Client { get_handle_counters, run, _marker } = *self;
|
||||
run_server(
|
||||
strategy,
|
||||
get_handle_counters(),
|
||||
server,
|
||||
(
|
||||
<MarkedTypes<S> as Types>::TokenStream::mark(input),
|
||||
<MarkedTypes<S> as Types>::TokenStream::mark(input2),
|
||||
),
|
||||
run,
|
||||
force_show_panics,
|
||||
)
|
||||
.map(|s| <Option<<MarkedTypes<S> as Types>::TokenStream>>::unmark(s).unwrap_or_default())
|
||||
}
|
||||
}
|
||||
166
crates/proc-macro-srv/src/abis/abi_1_64/proc_macro/diagnostic.rs
Normal file
166
crates/proc-macro-srv/src/abis/abi_1_64/proc_macro/diagnostic.rs
Normal file
|
|
@ -0,0 +1,166 @@
|
|||
//! lib-proc-macro diagnostic
|
||||
//!
|
||||
//! Copy from <https://github.com/rust-lang/rust/blob/e45d9973b2665897a768312e971b82cc62633103/src/libproc_macro/diagnostic.rs>
|
||||
//! augmented with removing unstable features
|
||||
|
||||
use super::Span;
|
||||
|
||||
/// An enum representing a diagnostic level.
|
||||
#[derive(Copy, Clone, Debug)]
|
||||
#[non_exhaustive]
|
||||
pub enum Level {
|
||||
/// An error.
|
||||
Error,
|
||||
/// A warning.
|
||||
Warning,
|
||||
/// A note.
|
||||
Note,
|
||||
/// A help message.
|
||||
Help,
|
||||
}
|
||||
|
||||
/// Trait implemented by types that can be converted into a set of `Span`s.
|
||||
pub trait MultiSpan {
|
||||
/// Converts `self` into a `Vec<Span>`.
|
||||
fn into_spans(self) -> Vec<Span>;
|
||||
}
|
||||
|
||||
impl MultiSpan for Span {
|
||||
fn into_spans(self) -> Vec<Span> {
|
||||
vec![self]
|
||||
}
|
||||
}
|
||||
|
||||
impl MultiSpan for Vec<Span> {
|
||||
fn into_spans(self) -> Vec<Span> {
|
||||
self
|
||||
}
|
||||
}
|
||||
|
||||
impl<'a> MultiSpan for &'a [Span] {
|
||||
fn into_spans(self) -> Vec<Span> {
|
||||
self.to_vec()
|
||||
}
|
||||
}
|
||||
|
||||
/// A structure representing a diagnostic message and associated children
|
||||
/// messages.
|
||||
#[derive(Clone, Debug)]
|
||||
pub struct Diagnostic {
|
||||
level: Level,
|
||||
message: String,
|
||||
spans: Vec<Span>,
|
||||
children: Vec<Diagnostic>,
|
||||
}
|
||||
|
||||
macro_rules! diagnostic_child_methods {
|
||||
($spanned:ident, $regular:ident, $level:expr) => {
|
||||
#[doc = concat!("Adds a new child diagnostics message to `self` with the [`",
|
||||
stringify!($level), "`] level, and the given `spans` and `message`.")]
|
||||
pub fn $spanned<S, T>(mut self, spans: S, message: T) -> Diagnostic
|
||||
where
|
||||
S: MultiSpan,
|
||||
T: Into<String>,
|
||||
{
|
||||
self.children.push(Diagnostic::spanned(spans, $level, message));
|
||||
self
|
||||
}
|
||||
|
||||
#[doc = concat!("Adds a new child diagnostic message to `self` with the [`",
|
||||
stringify!($level), "`] level, and the given `message`.")]
|
||||
pub fn $regular<T: Into<String>>(mut self, message: T) -> Diagnostic {
|
||||
self.children.push(Diagnostic::new($level, message));
|
||||
self
|
||||
}
|
||||
};
|
||||
}
|
||||
|
||||
/// Iterator over the children diagnostics of a `Diagnostic`.
|
||||
#[derive(Debug, Clone)]
|
||||
pub struct Children<'a>(std::slice::Iter<'a, Diagnostic>);
|
||||
|
||||
impl<'a> Iterator for Children<'a> {
|
||||
type Item = &'a Diagnostic;
|
||||
|
||||
fn next(&mut self) -> Option<Self::Item> {
|
||||
self.0.next()
|
||||
}
|
||||
}
|
||||
|
||||
impl Diagnostic {
|
||||
/// Creates a new diagnostic with the given `level` and `message`.
|
||||
pub fn new<T: Into<String>>(level: Level, message: T) -> Diagnostic {
|
||||
Diagnostic { level, message: message.into(), spans: vec![], children: vec![] }
|
||||
}
|
||||
|
||||
/// Creates a new diagnostic with the given `level` and `message` pointing to
|
||||
/// the given set of `spans`.
|
||||
pub fn spanned<S, T>(spans: S, level: Level, message: T) -> Diagnostic
|
||||
where
|
||||
S: MultiSpan,
|
||||
T: Into<String>,
|
||||
{
|
||||
Diagnostic { level, message: message.into(), spans: spans.into_spans(), children: vec![] }
|
||||
}
|
||||
|
||||
diagnostic_child_methods!(span_error, error, Level::Error);
|
||||
diagnostic_child_methods!(span_warning, warning, Level::Warning);
|
||||
diagnostic_child_methods!(span_note, note, Level::Note);
|
||||
diagnostic_child_methods!(span_help, help, Level::Help);
|
||||
|
||||
/// Returns the diagnostic `level` for `self`.
|
||||
pub fn level(&self) -> Level {
|
||||
self.level
|
||||
}
|
||||
|
||||
/// Sets the level in `self` to `level`.
|
||||
pub fn set_level(&mut self, level: Level) {
|
||||
self.level = level;
|
||||
}
|
||||
|
||||
/// Returns the message in `self`.
|
||||
pub fn message(&self) -> &str {
|
||||
&self.message
|
||||
}
|
||||
|
||||
/// Sets the message in `self` to `message`.
|
||||
pub fn set_message<T: Into<String>>(&mut self, message: T) {
|
||||
self.message = message.into();
|
||||
}
|
||||
|
||||
/// Returns the `Span`s in `self`.
|
||||
pub fn spans(&self) -> &[Span] {
|
||||
&self.spans
|
||||
}
|
||||
|
||||
/// Sets the `Span`s in `self` to `spans`.
|
||||
pub fn set_spans<S: MultiSpan>(&mut self, spans: S) {
|
||||
self.spans = spans.into_spans();
|
||||
}
|
||||
|
||||
/// Returns an iterator over the children diagnostics of `self`.
|
||||
pub fn children(&self) -> Children<'_> {
|
||||
Children(self.children.iter())
|
||||
}
|
||||
|
||||
/// Emit the diagnostic.
|
||||
pub fn emit(self) {
|
||||
fn to_internal(spans: Vec<Span>) -> super::bridge::client::MultiSpan {
|
||||
let mut multi_span = super::bridge::client::MultiSpan::new();
|
||||
for span in spans {
|
||||
multi_span.push(span.0);
|
||||
}
|
||||
multi_span
|
||||
}
|
||||
|
||||
let mut diag = super::bridge::client::Diagnostic::new(
|
||||
self.level,
|
||||
&self.message[..],
|
||||
to_internal(self.spans),
|
||||
);
|
||||
for c in self.children {
|
||||
diag.sub(c.level, &c.message[..], to_internal(c.spans));
|
||||
}
|
||||
diag.emit();
|
||||
}
|
||||
}
|
||||
1125
crates/proc-macro-srv/src/abis/abi_1_64/proc_macro/mod.rs
Normal file
1125
crates/proc-macro-srv/src/abis/abi_1_64/proc_macro/mod.rs
Normal file
File diff suppressed because it is too large
Load diff
139
crates/proc-macro-srv/src/abis/abi_1_64/proc_macro/quote.rs
Normal file
139
crates/proc-macro-srv/src/abis/abi_1_64/proc_macro/quote.rs
Normal file
|
|
@ -0,0 +1,139 @@
|
|||
//! # Quasiquoter
|
||||
//! This file contains the implementation internals of the quasiquoter provided by `quote!`.
|
||||
|
||||
//! This quasiquoter uses macros 2.0 hygiene to reliably access
|
||||
//! items from `proc_macro`, to build a `proc_macro::TokenStream`.
|
||||
|
||||
use super::{Delimiter, Group, Ident, Literal, Punct, Spacing, Span, TokenStream, TokenTree};
|
||||
|
||||
macro_rules! quote_tt {
|
||||
(($($t:tt)*)) => { Group::new(Delimiter::Parenthesis, quote!($($t)*)) };
|
||||
([$($t:tt)*]) => { Group::new(Delimiter::Bracket, quote!($($t)*)) };
|
||||
({$($t:tt)*}) => { Group::new(Delimiter::Brace, quote!($($t)*)) };
|
||||
(,) => { Punct::new(',', Spacing::Alone) };
|
||||
(.) => { Punct::new('.', Spacing::Alone) };
|
||||
(;) => { Punct::new(';', Spacing::Alone) };
|
||||
(!) => { Punct::new('!', Spacing::Alone) };
|
||||
(<) => { Punct::new('<', Spacing::Alone) };
|
||||
(>) => { Punct::new('>', Spacing::Alone) };
|
||||
(&) => { Punct::new('&', Spacing::Alone) };
|
||||
(=) => { Punct::new('=', Spacing::Alone) };
|
||||
($i:ident) => { Ident::new(stringify!($i), Span::def_site()) };
|
||||
}
|
||||
|
||||
macro_rules! quote_ts {
|
||||
((@ $($t:tt)*)) => { $($t)* };
|
||||
(::) => {
|
||||
[
|
||||
TokenTree::from(Punct::new(':', Spacing::Joint)),
|
||||
TokenTree::from(Punct::new(':', Spacing::Alone)),
|
||||
].iter()
|
||||
.cloned()
|
||||
.map(|mut x| {
|
||||
x.set_span(Span::def_site());
|
||||
x
|
||||
})
|
||||
.collect::<TokenStream>()
|
||||
};
|
||||
($t:tt) => { TokenTree::from(quote_tt!($t)) };
|
||||
}
|
||||
|
||||
/// Simpler version of the real `quote!` macro, implemented solely
|
||||
/// through `macro_rules`, for bootstrapping the real implementation
|
||||
/// (see the `quote` function), which does not have access to the
|
||||
/// real `quote!` macro due to the `proc_macro` crate not being
|
||||
/// able to depend on itself.
|
||||
///
|
||||
/// Note: supported tokens are a subset of the real `quote!`, but
|
||||
/// unquoting is different: instead of `$x`, this uses `(@ expr)`.
|
||||
macro_rules! quote {
|
||||
() => { TokenStream::new() };
|
||||
($($t:tt)*) => {
|
||||
[
|
||||
$(TokenStream::from(quote_ts!($t)),)*
|
||||
].iter().cloned().collect::<TokenStream>()
|
||||
};
|
||||
}
|
||||
|
||||
/// Quote a `TokenStream` into a `TokenStream`.
|
||||
/// This is the actual implementation of the `quote!()` proc macro.
|
||||
///
|
||||
/// It is loaded by the compiler in `register_builtin_macros`.
|
||||
pub fn quote(stream: TokenStream) -> TokenStream {
|
||||
if stream.is_empty() {
|
||||
return quote!(super::TokenStream::new());
|
||||
}
|
||||
let proc_macro_crate = quote!(crate);
|
||||
let mut after_dollar = false;
|
||||
let tokens = stream
|
||||
.into_iter()
|
||||
.filter_map(|tree| {
|
||||
if after_dollar {
|
||||
after_dollar = false;
|
||||
match tree {
|
||||
TokenTree::Ident(_) => {
|
||||
return Some(quote!(Into::<super::TokenStream>::into(
|
||||
Clone::clone(&(@ tree))),));
|
||||
}
|
||||
TokenTree::Punct(ref tt) if tt.as_char() == '$' => {}
|
||||
_ => panic!("`$` must be followed by an ident or `$` in `quote!`"),
|
||||
}
|
||||
} else if let TokenTree::Punct(ref tt) = tree {
|
||||
if tt.as_char() == '$' {
|
||||
after_dollar = true;
|
||||
return None;
|
||||
}
|
||||
}
|
||||
|
||||
Some(quote!(super::TokenStream::from((@ match tree {
|
||||
TokenTree::Punct(tt) => quote!(super::TokenTree::Punct(super::Punct::new(
|
||||
(@ TokenTree::from(Literal::character(tt.as_char()))),
|
||||
(@ match tt.spacing() {
|
||||
Spacing::Alone => quote!(super::Spacing::Alone),
|
||||
Spacing::Joint => quote!(super::Spacing::Joint),
|
||||
}),
|
||||
))),
|
||||
TokenTree::Group(tt) => quote!(super::TokenTree::Group(super::Group::new(
|
||||
(@ match tt.delimiter() {
|
||||
Delimiter::Parenthesis => quote!(super::Delimiter::Parenthesis),
|
||||
Delimiter::Brace => quote!(super::Delimiter::Brace),
|
||||
Delimiter::Bracket => quote!(super::Delimiter::Bracket),
|
||||
Delimiter::None => quote!(super::Delimiter::None),
|
||||
}),
|
||||
(@ quote(tt.stream())),
|
||||
))),
|
||||
TokenTree::Ident(tt) => quote!(super::TokenTree::Ident(super::Ident::new(
|
||||
(@ TokenTree::from(Literal::string(&tt.to_string()))),
|
||||
(@ quote_span(proc_macro_crate.clone(), tt.span())),
|
||||
))),
|
||||
TokenTree::Literal(tt) => quote!(super::TokenTree::Literal({
|
||||
let mut iter = (@ TokenTree::from(Literal::string(&tt.to_string())))
|
||||
.parse::<super::TokenStream>()
|
||||
.unwrap()
|
||||
.into_iter();
|
||||
if let (Some(super::TokenTree::Literal(mut lit)), None) =
|
||||
(iter.next(), iter.next())
|
||||
{
|
||||
lit.set_span((@ quote_span(proc_macro_crate.clone(), tt.span())));
|
||||
lit
|
||||
} else {
|
||||
unreachable!()
|
||||
}
|
||||
}))
|
||||
})),))
|
||||
})
|
||||
.collect::<TokenStream>();
|
||||
|
||||
if after_dollar {
|
||||
panic!("unexpected trailing `$` in `quote!`");
|
||||
}
|
||||
|
||||
quote!([(@ tokens)].iter().cloned().collect::<super::TokenStream>())
|
||||
}
|
||||
|
||||
/// Quote a `Span` into a `TokenStream`.
|
||||
/// This is needed to implement a custom quoter.
|
||||
pub fn quote_span(proc_macro_crate: TokenStream, span: Span) -> TokenStream {
|
||||
let id = span.save_span();
|
||||
quote!((@ proc_macro_crate ) ::Span::recover_proc_macro_span((@ TokenTree::from(Literal::usize_unsuffixed(id)))))
|
||||
}
|
||||
792
crates/proc-macro-srv/src/abis/abi_1_64/rustc_server.rs
Normal file
792
crates/proc-macro-srv/src/abis/abi_1_64/rustc_server.rs
Normal file
|
|
@ -0,0 +1,792 @@
|
|||
//! Rustc proc-macro server implementation with tt
|
||||
//!
|
||||
//! Based on idea from <https://github.com/fedochet/rust-proc-macro-expander>
|
||||
//! The lib-proc-macro server backend is `TokenStream`-agnostic, such that
|
||||
//! we could provide any TokenStream implementation.
|
||||
//! The original idea from fedochet is using proc-macro2 as backend,
|
||||
//! we use tt instead for better integration with RA.
|
||||
//!
|
||||
//! FIXME: No span and source file information is implemented yet
|
||||
|
||||
use super::proc_macro::bridge::{self, server};
|
||||
|
||||
use std::collections::HashMap;
|
||||
use std::hash::Hash;
|
||||
use std::iter::FromIterator;
|
||||
use std::ops::Bound;
|
||||
use std::{ascii, vec::IntoIter};
|
||||
|
||||
type Group = tt::Subtree;
|
||||
type TokenTree = tt::TokenTree;
|
||||
type Punct = tt::Punct;
|
||||
type Spacing = tt::Spacing;
|
||||
type Literal = tt::Literal;
|
||||
type Span = tt::TokenId;
|
||||
|
||||
#[derive(Debug, Default, Clone)]
|
||||
pub struct TokenStream {
|
||||
pub token_trees: Vec<TokenTree>,
|
||||
}
|
||||
|
||||
impl TokenStream {
|
||||
pub fn new() -> Self {
|
||||
TokenStream::default()
|
||||
}
|
||||
|
||||
pub fn with_subtree(subtree: tt::Subtree) -> Self {
|
||||
if subtree.delimiter.is_some() {
|
||||
TokenStream { token_trees: vec![TokenTree::Subtree(subtree)] }
|
||||
} else {
|
||||
TokenStream { token_trees: subtree.token_trees }
|
||||
}
|
||||
}
|
||||
|
||||
pub fn into_subtree(self) -> tt::Subtree {
|
||||
tt::Subtree { delimiter: None, token_trees: self.token_trees }
|
||||
}
|
||||
|
||||
pub fn is_empty(&self) -> bool {
|
||||
self.token_trees.is_empty()
|
||||
}
|
||||
}
|
||||
|
||||
/// Creates a token stream containing a single token tree.
|
||||
impl From<TokenTree> for TokenStream {
|
||||
fn from(tree: TokenTree) -> TokenStream {
|
||||
TokenStream { token_trees: vec![tree] }
|
||||
}
|
||||
}
|
||||
|
||||
/// Collects a number of token trees into a single stream.
|
||||
impl FromIterator<TokenTree> for TokenStream {
|
||||
fn from_iter<I: IntoIterator<Item = TokenTree>>(trees: I) -> Self {
|
||||
trees.into_iter().map(TokenStream::from).collect()
|
||||
}
|
||||
}
|
||||
|
||||
/// A "flattening" operation on token streams, collects token trees
|
||||
/// from multiple token streams into a single stream.
|
||||
impl FromIterator<TokenStream> for TokenStream {
|
||||
fn from_iter<I: IntoIterator<Item = TokenStream>>(streams: I) -> Self {
|
||||
let mut builder = TokenStreamBuilder::new();
|
||||
streams.into_iter().for_each(|stream| builder.push(stream));
|
||||
builder.build()
|
||||
}
|
||||
}
|
||||
|
||||
impl Extend<TokenTree> for TokenStream {
|
||||
fn extend<I: IntoIterator<Item = TokenTree>>(&mut self, trees: I) {
|
||||
self.extend(trees.into_iter().map(TokenStream::from));
|
||||
}
|
||||
}
|
||||
|
||||
impl Extend<TokenStream> for TokenStream {
|
||||
fn extend<I: IntoIterator<Item = TokenStream>>(&mut self, streams: I) {
|
||||
for item in streams {
|
||||
for tkn in item {
|
||||
match tkn {
|
||||
tt::TokenTree::Subtree(subtree) if subtree.delimiter.is_none() => {
|
||||
self.token_trees.extend(subtree.token_trees);
|
||||
}
|
||||
_ => {
|
||||
self.token_trees.push(tkn);
|
||||
}
|
||||
}
|
||||
}
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
#[derive(Clone)]
|
||||
pub struct SourceFile {
|
||||
// FIXME stub
|
||||
}
|
||||
|
||||
type Level = super::proc_macro::Level;
|
||||
type LineColumn = super::proc_macro::LineColumn;
|
||||
|
||||
/// A structure representing a diagnostic message and associated children
|
||||
/// messages.
|
||||
#[derive(Clone, Debug)]
|
||||
pub struct Diagnostic {
|
||||
level: Level,
|
||||
message: String,
|
||||
spans: Vec<Span>,
|
||||
children: Vec<Diagnostic>,
|
||||
}
|
||||
|
||||
impl Diagnostic {
|
||||
/// Creates a new diagnostic with the given `level` and `message`.
|
||||
pub fn new<T: Into<String>>(level: Level, message: T) -> Diagnostic {
|
||||
Diagnostic { level, message: message.into(), spans: vec![], children: vec![] }
|
||||
}
|
||||
}
|
||||
|
||||
// Rustc Server Ident has to be `Copyable`
|
||||
// We use a stub here for bypassing
|
||||
#[derive(Hash, Eq, PartialEq, Copy, Clone)]
|
||||
pub struct IdentId(u32);
|
||||
|
||||
#[derive(Clone, Hash, Eq, PartialEq)]
|
||||
struct IdentData(tt::Ident);
|
||||
|
||||
#[derive(Default)]
|
||||
struct IdentInterner {
|
||||
idents: HashMap<IdentData, u32>,
|
||||
ident_data: Vec<IdentData>,
|
||||
}
|
||||
|
||||
impl IdentInterner {
|
||||
fn intern(&mut self, data: &IdentData) -> u32 {
|
||||
if let Some(index) = self.idents.get(data) {
|
||||
return *index;
|
||||
}
|
||||
|
||||
let index = self.idents.len() as u32;
|
||||
self.ident_data.push(data.clone());
|
||||
self.idents.insert(data.clone(), index);
|
||||
index
|
||||
}
|
||||
|
||||
fn get(&self, index: u32) -> &IdentData {
|
||||
&self.ident_data[index as usize]
|
||||
}
|
||||
|
||||
#[allow(unused)]
|
||||
fn get_mut(&mut self, index: u32) -> &mut IdentData {
|
||||
self.ident_data.get_mut(index as usize).expect("Should be consistent")
|
||||
}
|
||||
}
|
||||
|
||||
pub struct TokenStreamBuilder {
|
||||
acc: TokenStream,
|
||||
}
|
||||
|
||||
/// Public implementation details for the `TokenStream` type, such as iterators.
|
||||
pub mod token_stream {
|
||||
use std::str::FromStr;
|
||||
|
||||
use super::{TokenStream, TokenTree};
|
||||
|
||||
/// An iterator over `TokenStream`'s `TokenTree`s.
|
||||
/// The iteration is "shallow", e.g., the iterator doesn't recurse into delimited groups,
|
||||
/// and returns whole groups as token trees.
|
||||
impl IntoIterator for TokenStream {
|
||||
type Item = TokenTree;
|
||||
type IntoIter = super::IntoIter<TokenTree>;
|
||||
|
||||
fn into_iter(self) -> Self::IntoIter {
|
||||
self.token_trees.into_iter()
|
||||
}
|
||||
}
|
||||
|
||||
type LexError = String;
|
||||
|
||||
/// Attempts to break the string into tokens and parse those tokens into a token stream.
|
||||
/// May fail for a number of reasons, for example, if the string contains unbalanced delimiters
|
||||
/// or characters not existing in the language.
|
||||
/// All tokens in the parsed stream get `Span::call_site()` spans.
|
||||
///
|
||||
/// NOTE: some errors may cause panics instead of returning `LexError`. We reserve the right to
|
||||
/// change these errors into `LexError`s later.
|
||||
impl FromStr for TokenStream {
|
||||
type Err = LexError;
|
||||
|
||||
fn from_str(src: &str) -> Result<TokenStream, LexError> {
|
||||
let (subtree, _token_map) =
|
||||
mbe::parse_to_token_tree(src).ok_or("Failed to parse from mbe")?;
|
||||
|
||||
let subtree = subtree_replace_token_ids_with_unspecified(subtree);
|
||||
Ok(TokenStream::with_subtree(subtree))
|
||||
}
|
||||
}
|
||||
|
||||
impl ToString for TokenStream {
|
||||
fn to_string(&self) -> String {
|
||||
tt::pretty(&self.token_trees)
|
||||
}
|
||||
}
|
||||
|
||||
fn subtree_replace_token_ids_with_unspecified(subtree: tt::Subtree) -> tt::Subtree {
|
||||
tt::Subtree {
|
||||
delimiter: subtree
|
||||
.delimiter
|
||||
.map(|d| tt::Delimiter { id: tt::TokenId::unspecified(), ..d }),
|
||||
token_trees: subtree
|
||||
.token_trees
|
||||
.into_iter()
|
||||
.map(token_tree_replace_token_ids_with_unspecified)
|
||||
.collect(),
|
||||
}
|
||||
}
|
||||
|
||||
fn token_tree_replace_token_ids_with_unspecified(tt: tt::TokenTree) -> tt::TokenTree {
|
||||
match tt {
|
||||
tt::TokenTree::Leaf(leaf) => {
|
||||
tt::TokenTree::Leaf(leaf_replace_token_ids_with_unspecified(leaf))
|
||||
}
|
||||
tt::TokenTree::Subtree(subtree) => {
|
||||
tt::TokenTree::Subtree(subtree_replace_token_ids_with_unspecified(subtree))
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
fn leaf_replace_token_ids_with_unspecified(leaf: tt::Leaf) -> tt::Leaf {
|
||||
match leaf {
|
||||
tt::Leaf::Literal(lit) => {
|
||||
tt::Leaf::Literal(tt::Literal { id: tt::TokenId::unspecified(), ..lit })
|
||||
}
|
||||
tt::Leaf::Punct(punct) => {
|
||||
tt::Leaf::Punct(tt::Punct { id: tt::TokenId::unspecified(), ..punct })
|
||||
}
|
||||
tt::Leaf::Ident(ident) => {
|
||||
tt::Leaf::Ident(tt::Ident { id: tt::TokenId::unspecified(), ..ident })
|
||||
}
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
impl TokenStreamBuilder {
|
||||
fn new() -> TokenStreamBuilder {
|
||||
TokenStreamBuilder { acc: TokenStream::new() }
|
||||
}
|
||||
|
||||
fn push(&mut self, stream: TokenStream) {
|
||||
self.acc.extend(stream.into_iter())
|
||||
}
|
||||
|
||||
fn build(self) -> TokenStream {
|
||||
self.acc
|
||||
}
|
||||
}
|
||||
|
||||
pub struct FreeFunctions;
|
||||
|
||||
#[derive(Clone)]
|
||||
pub struct TokenStreamIter {
|
||||
trees: IntoIter<TokenTree>,
|
||||
}
|
||||
|
||||
#[derive(Default)]
|
||||
pub struct Rustc {
|
||||
ident_interner: IdentInterner,
|
||||
// FIXME: store span information here.
|
||||
}
|
||||
|
||||
impl server::Types for Rustc {
|
||||
type FreeFunctions = FreeFunctions;
|
||||
type TokenStream = TokenStream;
|
||||
type Ident = IdentId;
|
||||
type Literal = Literal;
|
||||
type SourceFile = SourceFile;
|
||||
type Diagnostic = Diagnostic;
|
||||
type Span = Span;
|
||||
type MultiSpan = Vec<Span>;
|
||||
}
|
||||
|
||||
impl server::FreeFunctions for Rustc {
|
||||
fn track_env_var(&mut self, _var: &str, _value: Option<&str>) {
|
||||
// FIXME: track env var accesses
|
||||
// https://github.com/rust-lang/rust/pull/71858
|
||||
}
|
||||
fn track_path(&mut self, _path: &str) {}
|
||||
}
|
||||
|
||||
impl server::TokenStream for Rustc {
|
||||
fn is_empty(&mut self, stream: &Self::TokenStream) -> bool {
|
||||
stream.is_empty()
|
||||
}
|
||||
fn from_str(&mut self, src: &str) -> Self::TokenStream {
|
||||
use std::str::FromStr;
|
||||
|
||||
Self::TokenStream::from_str(src).expect("cannot parse string")
|
||||
}
|
||||
fn to_string(&mut self, stream: &Self::TokenStream) -> String {
|
||||
stream.to_string()
|
||||
}
|
||||
fn from_token_tree(
|
||||
&mut self,
|
||||
tree: bridge::TokenTree<Self::TokenStream, Self::Span, Self::Ident, Self::Literal>,
|
||||
) -> Self::TokenStream {
|
||||
match tree {
|
||||
bridge::TokenTree::Group(group) => {
|
||||
let group = Group {
|
||||
delimiter: delim_to_internal(group.delimiter),
|
||||
token_trees: match group.stream {
|
||||
Some(stream) => stream.into_iter().collect(),
|
||||
None => Vec::new(),
|
||||
},
|
||||
};
|
||||
let tree = TokenTree::from(group);
|
||||
Self::TokenStream::from_iter(vec![tree])
|
||||
}
|
||||
|
||||
bridge::TokenTree::Ident(IdentId(index)) => {
|
||||
let IdentData(ident) = self.ident_interner.get(index).clone();
|
||||
let ident: tt::Ident = ident;
|
||||
let leaf = tt::Leaf::from(ident);
|
||||
let tree = TokenTree::from(leaf);
|
||||
Self::TokenStream::from_iter(vec![tree])
|
||||
}
|
||||
|
||||
bridge::TokenTree::Literal(literal) => {
|
||||
let leaf = tt::Leaf::from(literal);
|
||||
let tree = TokenTree::from(leaf);
|
||||
Self::TokenStream::from_iter(vec![tree])
|
||||
}
|
||||
|
||||
bridge::TokenTree::Punct(p) => {
|
||||
let punct = tt::Punct {
|
||||
char: p.ch as char,
|
||||
spacing: if p.joint { Spacing::Joint } else { Spacing::Alone },
|
||||
id: p.span,
|
||||
};
|
||||
let leaf = tt::Leaf::from(punct);
|
||||
let tree = TokenTree::from(leaf);
|
||||
Self::TokenStream::from_iter(vec![tree])
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
fn expand_expr(&mut self, self_: &Self::TokenStream) -> Result<Self::TokenStream, ()> {
|
||||
Ok(self_.clone())
|
||||
}
|
||||
|
||||
fn concat_trees(
|
||||
&mut self,
|
||||
base: Option<Self::TokenStream>,
|
||||
trees: Vec<bridge::TokenTree<Self::TokenStream, Self::Span, Self::Ident, Self::Literal>>,
|
||||
) -> Self::TokenStream {
|
||||
let mut builder = TokenStreamBuilder::new();
|
||||
if let Some(base) = base {
|
||||
builder.push(base);
|
||||
}
|
||||
for tree in trees {
|
||||
builder.push(self.from_token_tree(tree));
|
||||
}
|
||||
builder.build()
|
||||
}
|
||||
|
||||
fn concat_streams(
|
||||
&mut self,
|
||||
base: Option<Self::TokenStream>,
|
||||
streams: Vec<Self::TokenStream>,
|
||||
) -> Self::TokenStream {
|
||||
let mut builder = TokenStreamBuilder::new();
|
||||
if let Some(base) = base {
|
||||
builder.push(base);
|
||||
}
|
||||
for stream in streams {
|
||||
builder.push(stream);
|
||||
}
|
||||
builder.build()
|
||||
}
|
||||
|
||||
fn into_trees(
|
||||
&mut self,
|
||||
stream: Self::TokenStream,
|
||||
) -> Vec<bridge::TokenTree<Self::TokenStream, Self::Span, Self::Ident, Self::Literal>> {
|
||||
stream
|
||||
.into_iter()
|
||||
.map(|tree| match tree {
|
||||
tt::TokenTree::Leaf(tt::Leaf::Ident(ident)) => {
|
||||
bridge::TokenTree::Ident(IdentId(self.ident_interner.intern(&IdentData(ident))))
|
||||
}
|
||||
tt::TokenTree::Leaf(tt::Leaf::Literal(lit)) => bridge::TokenTree::Literal(lit),
|
||||
tt::TokenTree::Leaf(tt::Leaf::Punct(punct)) => {
|
||||
bridge::TokenTree::Punct(bridge::Punct {
|
||||
ch: punct.char as u8,
|
||||
joint: punct.spacing == Spacing::Joint,
|
||||
span: punct.id,
|
||||
})
|
||||
}
|
||||
tt::TokenTree::Subtree(subtree) => bridge::TokenTree::Group(bridge::Group {
|
||||
delimiter: delim_to_external(subtree.delimiter),
|
||||
stream: if subtree.token_trees.is_empty() {
|
||||
None
|
||||
} else {
|
||||
Some(subtree.token_trees.into_iter().collect())
|
||||
},
|
||||
span: bridge::DelimSpan::from_single(
|
||||
subtree.delimiter.map_or(Span::unspecified(), |del| del.id),
|
||||
),
|
||||
}),
|
||||
})
|
||||
.collect()
|
||||
}
|
||||
}
|
||||
|
||||
fn delim_to_internal(d: bridge::Delimiter) -> Option<tt::Delimiter> {
|
||||
let kind = match d {
|
||||
bridge::Delimiter::Parenthesis => tt::DelimiterKind::Parenthesis,
|
||||
bridge::Delimiter::Brace => tt::DelimiterKind::Brace,
|
||||
bridge::Delimiter::Bracket => tt::DelimiterKind::Bracket,
|
||||
bridge::Delimiter::None => return None,
|
||||
};
|
||||
Some(tt::Delimiter { id: tt::TokenId::unspecified(), kind })
|
||||
}
|
||||
|
||||
fn delim_to_external(d: Option<tt::Delimiter>) -> bridge::Delimiter {
|
||||
match d.map(|it| it.kind) {
|
||||
Some(tt::DelimiterKind::Parenthesis) => bridge::Delimiter::Parenthesis,
|
||||
Some(tt::DelimiterKind::Brace) => bridge::Delimiter::Brace,
|
||||
Some(tt::DelimiterKind::Bracket) => bridge::Delimiter::Bracket,
|
||||
None => bridge::Delimiter::None,
|
||||
}
|
||||
}
|
||||
|
||||
fn spacing_to_internal(spacing: bridge::Spacing) -> Spacing {
|
||||
match spacing {
|
||||
bridge::Spacing::Alone => Spacing::Alone,
|
||||
bridge::Spacing::Joint => Spacing::Joint,
|
||||
}
|
||||
}
|
||||
|
||||
fn spacing_to_external(spacing: Spacing) -> bridge::Spacing {
|
||||
match spacing {
|
||||
Spacing::Alone => bridge::Spacing::Alone,
|
||||
Spacing::Joint => bridge::Spacing::Joint,
|
||||
}
|
||||
}
|
||||
|
||||
impl server::Ident for Rustc {
|
||||
fn new(&mut self, string: &str, span: Self::Span, _is_raw: bool) -> Self::Ident {
|
||||
IdentId(self.ident_interner.intern(&IdentData(tt::Ident { text: string.into(), id: span })))
|
||||
}
|
||||
|
||||
fn span(&mut self, ident: Self::Ident) -> Self::Span {
|
||||
self.ident_interner.get(ident.0).0.id
|
||||
}
|
||||
fn with_span(&mut self, ident: Self::Ident, span: Self::Span) -> Self::Ident {
|
||||
let data = self.ident_interner.get(ident.0);
|
||||
let new = IdentData(tt::Ident { id: span, ..data.0.clone() });
|
||||
IdentId(self.ident_interner.intern(&new))
|
||||
}
|
||||
}
|
||||
|
||||
impl server::Literal for Rustc {
|
||||
fn debug_kind(&mut self, _literal: &Self::Literal) -> String {
|
||||
// r-a: debug_kind and suffix are unsupported; corresponding client code has been changed to not call these.
|
||||
// They must still be present to be ABI-compatible and work with upstream proc_macro.
|
||||
"".to_owned()
|
||||
}
|
||||
fn from_str(&mut self, s: &str) -> Result<Self::Literal, ()> {
|
||||
Ok(Literal { text: s.into(), id: tt::TokenId::unspecified() })
|
||||
}
|
||||
fn symbol(&mut self, literal: &Self::Literal) -> String {
|
||||
literal.text.to_string()
|
||||
}
|
||||
fn suffix(&mut self, _literal: &Self::Literal) -> Option<String> {
|
||||
None
|
||||
}
|
||||
|
||||
fn to_string(&mut self, literal: &Self::Literal) -> String {
|
||||
literal.to_string()
|
||||
}
|
||||
|
||||
fn integer(&mut self, n: &str) -> Self::Literal {
|
||||
let n = match n.parse::<i128>() {
|
||||
Ok(n) => n.to_string(),
|
||||
Err(_) => n.parse::<u128>().unwrap().to_string(),
|
||||
};
|
||||
Literal { text: n.into(), id: tt::TokenId::unspecified() }
|
||||
}
|
||||
|
||||
fn typed_integer(&mut self, n: &str, kind: &str) -> Self::Literal {
|
||||
macro_rules! def_suffixed_integer {
|
||||
($kind:ident, $($ty:ty),*) => {
|
||||
match $kind {
|
||||
$(
|
||||
stringify!($ty) => {
|
||||
let n: $ty = n.parse().unwrap();
|
||||
format!(concat!("{}", stringify!($ty)), n)
|
||||
}
|
||||
)*
|
||||
_ => unimplemented!("unknown args for typed_integer: n {}, kind {}", n, $kind),
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
let text = def_suffixed_integer! {kind, u8, u16, u32, u64, u128, usize, i8, i16, i32, i64, i128, isize};
|
||||
|
||||
Literal { text: text.into(), id: tt::TokenId::unspecified() }
|
||||
}
|
||||
|
||||
fn float(&mut self, n: &str) -> Self::Literal {
|
||||
let n: f64 = n.parse().unwrap();
|
||||
let mut text = f64::to_string(&n);
|
||||
if !text.contains('.') {
|
||||
text += ".0"
|
||||
}
|
||||
Literal { text: text.into(), id: tt::TokenId::unspecified() }
|
||||
}
|
||||
|
||||
fn f32(&mut self, n: &str) -> Self::Literal {
|
||||
let n: f32 = n.parse().unwrap();
|
||||
let text = format!("{}f32", n);
|
||||
Literal { text: text.into(), id: tt::TokenId::unspecified() }
|
||||
}
|
||||
|
||||
fn f64(&mut self, n: &str) -> Self::Literal {
|
||||
let n: f64 = n.parse().unwrap();
|
||||
let text = format!("{}f64", n);
|
||||
Literal { text: text.into(), id: tt::TokenId::unspecified() }
|
||||
}
|
||||
|
||||
fn string(&mut self, string: &str) -> Self::Literal {
|
||||
let mut escaped = String::new();
|
||||
for ch in string.chars() {
|
||||
escaped.extend(ch.escape_debug());
|
||||
}
|
||||
Literal { text: format!("\"{}\"", escaped).into(), id: tt::TokenId::unspecified() }
|
||||
}
|
||||
|
||||
fn character(&mut self, ch: char) -> Self::Literal {
|
||||
Literal { text: format!("'{}'", ch).into(), id: tt::TokenId::unspecified() }
|
||||
}
|
||||
|
||||
fn byte_string(&mut self, bytes: &[u8]) -> Self::Literal {
|
||||
let string = bytes
|
||||
.iter()
|
||||
.cloned()
|
||||
.flat_map(ascii::escape_default)
|
||||
.map(Into::<char>::into)
|
||||
.collect::<String>();
|
||||
|
||||
Literal { text: format!("b\"{}\"", string).into(), id: tt::TokenId::unspecified() }
|
||||
}
|
||||
|
||||
fn span(&mut self, literal: &Self::Literal) -> Self::Span {
|
||||
literal.id
|
||||
}
|
||||
|
||||
fn set_span(&mut self, literal: &mut Self::Literal, span: Self::Span) {
|
||||
literal.id = span;
|
||||
}
|
||||
|
||||
fn subspan(
|
||||
&mut self,
|
||||
_literal: &Self::Literal,
|
||||
_start: Bound<usize>,
|
||||
_end: Bound<usize>,
|
||||
) -> Option<Self::Span> {
|
||||
// FIXME handle span
|
||||
None
|
||||
}
|
||||
}
|
||||
|
||||
impl server::SourceFile for Rustc {
|
||||
// FIXME these are all stubs
|
||||
fn eq(&mut self, _file1: &Self::SourceFile, _file2: &Self::SourceFile) -> bool {
|
||||
true
|
||||
}
|
||||
fn path(&mut self, _file: &Self::SourceFile) -> String {
|
||||
String::new()
|
||||
}
|
||||
fn is_real(&mut self, _file: &Self::SourceFile) -> bool {
|
||||
true
|
||||
}
|
||||
}
|
||||
|
||||
impl server::Diagnostic for Rustc {
|
||||
fn new(&mut self, level: Level, msg: &str, spans: Self::MultiSpan) -> Self::Diagnostic {
|
||||
let mut diag = Diagnostic::new(level, msg);
|
||||
diag.spans = spans;
|
||||
diag
|
||||
}
|
||||
|
||||
fn sub(
|
||||
&mut self,
|
||||
_diag: &mut Self::Diagnostic,
|
||||
_level: Level,
|
||||
_msg: &str,
|
||||
_spans: Self::MultiSpan,
|
||||
) {
|
||||
// FIXME handle diagnostic
|
||||
//
|
||||
}
|
||||
|
||||
fn emit(&mut self, _diag: Self::Diagnostic) {
|
||||
// FIXME handle diagnostic
|
||||
// diag.emit()
|
||||
}
|
||||
}
|
||||
|
||||
impl server::Span for Rustc {
|
||||
fn debug(&mut self, span: Self::Span) -> String {
|
||||
format!("{:?}", span.0)
|
||||
}
|
||||
fn source_file(&mut self, _span: Self::Span) -> Self::SourceFile {
|
||||
SourceFile {}
|
||||
}
|
||||
fn save_span(&mut self, _span: Self::Span) -> usize {
|
||||
// FIXME stub
|
||||
0
|
||||
}
|
||||
fn recover_proc_macro_span(&mut self, _id: usize) -> Self::Span {
|
||||
// FIXME stub
|
||||
tt::TokenId::unspecified()
|
||||
}
|
||||
/// Recent feature, not yet in the proc_macro
|
||||
///
|
||||
/// See PR:
|
||||
/// https://github.com/rust-lang/rust/pull/55780
|
||||
fn source_text(&mut self, _span: Self::Span) -> Option<String> {
|
||||
None
|
||||
}
|
||||
|
||||
fn parent(&mut self, _span: Self::Span) -> Option<Self::Span> {
|
||||
// FIXME handle span
|
||||
None
|
||||
}
|
||||
fn source(&mut self, span: Self::Span) -> Self::Span {
|
||||
// FIXME handle span
|
||||
span
|
||||
}
|
||||
fn start(&mut self, _span: Self::Span) -> LineColumn {
|
||||
// FIXME handle span
|
||||
LineColumn { line: 0, column: 0 }
|
||||
}
|
||||
fn end(&mut self, _span: Self::Span) -> LineColumn {
|
||||
// FIXME handle span
|
||||
LineColumn { line: 0, column: 0 }
|
||||
}
|
||||
fn join(&mut self, first: Self::Span, _second: Self::Span) -> Option<Self::Span> {
|
||||
// Just return the first span again, because some macros will unwrap the result.
|
||||
Some(first)
|
||||
}
|
||||
fn resolved_at(&mut self, _span: Self::Span, _at: Self::Span) -> Self::Span {
|
||||
// FIXME handle span
|
||||
tt::TokenId::unspecified()
|
||||
}
|
||||
|
||||
fn after(&mut self, _self_: Self::Span) -> Self::Span {
|
||||
tt::TokenId::unspecified()
|
||||
}
|
||||
|
||||
fn before(&mut self, _self_: Self::Span) -> Self::Span {
|
||||
tt::TokenId::unspecified()
|
||||
}
|
||||
}
|
||||
|
||||
impl server::MultiSpan for Rustc {
|
||||
fn new(&mut self) -> Self::MultiSpan {
|
||||
// FIXME handle span
|
||||
vec![]
|
||||
}
|
||||
|
||||
fn push(&mut self, other: &mut Self::MultiSpan, span: Self::Span) {
|
||||
//TODP
|
||||
other.push(span)
|
||||
}
|
||||
}
|
||||
|
||||
impl server::Server for Rustc {
|
||||
fn globals(&mut self) -> bridge::ExpnGlobals<Self::Span> {
|
||||
bridge::ExpnGlobals {
|
||||
def_site: Span::unspecified(),
|
||||
call_site: Span::unspecified(),
|
||||
mixed_site: Span::unspecified(),
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
#[cfg(test)]
|
||||
mod tests {
|
||||
use super::super::proc_macro::bridge::server::Literal;
|
||||
use super::*;
|
||||
|
||||
#[test]
|
||||
fn test_rustc_server_literals() {
|
||||
let mut srv = Rustc { ident_interner: IdentInterner::default() };
|
||||
assert_eq!(srv.integer("1234").text, "1234");
|
||||
|
||||
assert_eq!(srv.typed_integer("12", "u8").text, "12u8");
|
||||
assert_eq!(srv.typed_integer("255", "u16").text, "255u16");
|
||||
assert_eq!(srv.typed_integer("1234", "u32").text, "1234u32");
|
||||
assert_eq!(srv.typed_integer("15846685", "u64").text, "15846685u64");
|
||||
assert_eq!(srv.typed_integer("15846685258", "u128").text, "15846685258u128");
|
||||
assert_eq!(srv.typed_integer("156788984", "usize").text, "156788984usize");
|
||||
assert_eq!(srv.typed_integer("127", "i8").text, "127i8");
|
||||
assert_eq!(srv.typed_integer("255", "i16").text, "255i16");
|
||||
assert_eq!(srv.typed_integer("1234", "i32").text, "1234i32");
|
||||
assert_eq!(srv.typed_integer("15846685", "i64").text, "15846685i64");
|
||||
assert_eq!(srv.typed_integer("15846685258", "i128").text, "15846685258i128");
|
||||
assert_eq!(srv.float("0").text, "0.0");
|
||||
assert_eq!(srv.float("15684.5867").text, "15684.5867");
|
||||
assert_eq!(srv.f32("15684.58").text, "15684.58f32");
|
||||
assert_eq!(srv.f64("15684.58").text, "15684.58f64");
|
||||
|
||||
assert_eq!(srv.string("hello_world").text, "\"hello_world\"");
|
||||
assert_eq!(srv.character('c').text, "'c'");
|
||||
assert_eq!(srv.byte_string(b"1234586\x88").text, "b\"1234586\\x88\"");
|
||||
|
||||
// u128::max
|
||||
assert_eq!(
|
||||
srv.integer("340282366920938463463374607431768211455").text,
|
||||
"340282366920938463463374607431768211455"
|
||||
);
|
||||
// i128::min
|
||||
assert_eq!(
|
||||
srv.integer("-170141183460469231731687303715884105728").text,
|
||||
"-170141183460469231731687303715884105728"
|
||||
);
|
||||
}
|
||||
|
||||
#[test]
|
||||
fn test_rustc_server_to_string() {
|
||||
let s = TokenStream {
|
||||
token_trees: vec![
|
||||
tt::TokenTree::Leaf(tt::Leaf::Ident(tt::Ident {
|
||||
text: "struct".into(),
|
||||
id: tt::TokenId::unspecified(),
|
||||
})),
|
||||
tt::TokenTree::Leaf(tt::Leaf::Ident(tt::Ident {
|
||||
text: "T".into(),
|
||||
id: tt::TokenId::unspecified(),
|
||||
})),
|
||||
tt::TokenTree::Subtree(tt::Subtree {
|
||||
delimiter: Some(tt::Delimiter {
|
||||
id: tt::TokenId::unspecified(),
|
||||
kind: tt::DelimiterKind::Brace,
|
||||
}),
|
||||
token_trees: vec![],
|
||||
}),
|
||||
],
|
||||
};
|
||||
|
||||
assert_eq!(s.to_string(), "struct T {}");
|
||||
}
|
||||
|
||||
#[test]
|
||||
fn test_rustc_server_from_str() {
|
||||
use std::str::FromStr;
|
||||
let subtree_paren_a = tt::TokenTree::Subtree(tt::Subtree {
|
||||
delimiter: Some(tt::Delimiter {
|
||||
id: tt::TokenId::unspecified(),
|
||||
kind: tt::DelimiterKind::Parenthesis,
|
||||
}),
|
||||
token_trees: vec![tt::TokenTree::Leaf(tt::Leaf::Ident(tt::Ident {
|
||||
text: "a".into(),
|
||||
id: tt::TokenId::unspecified(),
|
||||
}))],
|
||||
});
|
||||
|
||||
let t1 = TokenStream::from_str("(a)").unwrap();
|
||||
assert_eq!(t1.token_trees.len(), 1);
|
||||
assert_eq!(t1.token_trees[0], subtree_paren_a);
|
||||
|
||||
let t2 = TokenStream::from_str("(a);").unwrap();
|
||||
assert_eq!(t2.token_trees.len(), 2);
|
||||
assert_eq!(t2.token_trees[0], subtree_paren_a);
|
||||
|
||||
let underscore = TokenStream::from_str("_").unwrap();
|
||||
assert_eq!(
|
||||
underscore.token_trees[0],
|
||||
tt::TokenTree::Leaf(tt::Leaf::Ident(tt::Ident {
|
||||
text: "_".into(),
|
||||
id: tt::TokenId::unspecified(),
|
||||
}))
|
||||
);
|
||||
}
|
||||
}
|
||||
|
|
@ -30,6 +30,7 @@ mod abi_1_56;
|
|||
mod abi_1_57;
|
||||
mod abi_1_58;
|
||||
mod abi_1_63;
|
||||
mod abi_1_64;
|
||||
|
||||
use super::dylib::LoadProcMacroDylibError;
|
||||
pub(crate) use abi_1_48::Abi as Abi_1_48;
|
||||
|
|
@ -38,6 +39,7 @@ pub(crate) use abi_1_56::Abi as Abi_1_56;
|
|||
pub(crate) use abi_1_57::Abi as Abi_1_57;
|
||||
pub(crate) use abi_1_58::Abi as Abi_1_58;
|
||||
pub(crate) use abi_1_63::Abi as Abi_1_63;
|
||||
pub(crate) use abi_1_64::Abi as Abi_1_64;
|
||||
use libloading::Library;
|
||||
use proc_macro_api::{ProcMacroKind, RustCInfo};
|
||||
|
||||
|
|
@ -58,6 +60,7 @@ pub(crate) enum Abi {
|
|||
Abi1_57(Abi_1_57),
|
||||
Abi1_58(Abi_1_58),
|
||||
Abi1_63(Abi_1_63),
|
||||
Abi1_64(Abi_1_64),
|
||||
}
|
||||
|
||||
impl Abi {
|
||||
|
|
@ -98,10 +101,14 @@ impl Abi {
|
|||
let inner = unsafe { Abi_1_58::from_lib(lib, symbol_name) }?;
|
||||
Ok(Abi::Abi1_58(inner))
|
||||
}
|
||||
(1, 63..) => {
|
||||
(1, 63) => {
|
||||
let inner = unsafe { Abi_1_63::from_lib(lib, symbol_name) }?;
|
||||
Ok(Abi::Abi1_63(inner))
|
||||
}
|
||||
(1, 64..) => {
|
||||
let inner = unsafe { Abi_1_64::from_lib(lib, symbol_name) }?;
|
||||
Ok(Abi::Abi1_64(inner))
|
||||
}
|
||||
_ => Err(LoadProcMacroDylibError::UnsupportedABI),
|
||||
}
|
||||
}
|
||||
|
|
@ -119,6 +126,7 @@ impl Abi {
|
|||
Self::Abi1_57(abi) => abi.expand(macro_name, macro_body, attributes),
|
||||
Self::Abi1_58(abi) => abi.expand(macro_name, macro_body, attributes),
|
||||
Self::Abi1_63(abi) => abi.expand(macro_name, macro_body, attributes),
|
||||
Self::Abi1_64(abi) => abi.expand(macro_name, macro_body, attributes),
|
||||
}
|
||||
}
|
||||
|
||||
|
|
@ -130,6 +138,7 @@ impl Abi {
|
|||
Self::Abi1_57(abi) => abi.list_macros(),
|
||||
Self::Abi1_58(abi) => abi.list_macros(),
|
||||
Self::Abi1_63(abi) => abi.list_macros(),
|
||||
Self::Abi1_64(abi) => abi.list_macros(),
|
||||
}
|
||||
}
|
||||
}
|
||||
|
|
|
|||
Loading…
Reference in a new issue