Adding upstream version 124.0.1.upstream/124.0.1

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

7 files changed, 673 insertions, 0 deletions

diff --git a/third_party/rust/foreign-types-macros/.cargo-checksum.json b/third_party/rust/foreign-types-macros/.cargo-checksum.json
new file mode 100644
index 0000000000..576d885de8
--- /dev/null
+++ b/third_party/rust/foreign-types-macros/.cargo-checksum.json
@@ -0,0 +1 @@
+{"files":{"Cargo.toml":"829c9da0910b673669e0401c6affd6564c94c49cf9629740104ffabf46f54d08","LICENSE-APACHE":"c6596eb7be8581c18be736c846fb9173b69eccf6ef94c5135893ec56bd92ba08","LICENSE-MIT":"333ea3aaa3cadb819f4acd9f9153f9feee060a995ca8710f32bc5bd9a4b91734","src/build.rs":"bee8027592dff9052e1235a6b1bfd0ae715389265247131c3e1ed865e561ba40","src/lib.rs":"7bb43075bede4947ee8f07a05e4d1b00e0daedadbde15f1b386f97514853ad1c","src/parse.rs":"d8cc189b7108602dee81ff5436a9480dd45397101f7faad875027441e1477ef1"},"package":"1a5c6c585bc94aaf2c7b51dd4c2ba22680844aba4c687be581871a6f518c5742"}
\ No newline at end of file
diff --git a/third_party/rust/foreign-types-macros/Cargo.toml b/third_party/rust/foreign-types-macros/Cargo.toml
new file mode 100644
index 0000000000..584d1844c5
--- /dev/null
+++ b/third_party/rust/foreign-types-macros/Cargo.toml
@@ -0,0 +1,35 @@
+# THIS FILE IS AUTOMATICALLY GENERATED BY CARGO
+#
+# When uploading crates to the registry Cargo will automatically
+# "normalize" Cargo.toml files for maximal compatibility
+# with all versions of Cargo and also rewrite `path` dependencies
+# to registry (e.g., crates.io) dependencies.
+#
+# If you are reading this file be aware that the original Cargo.toml
+# will likely look very different (and much more reasonable).
+# See Cargo.toml.orig for the original contents.
+
+[package]
+edition = "2018"
+name = "foreign-types-macros"
+version = "0.2.3"
+authors = ["Steven Fackler <sfackler@gmail.com>"]
+description = "An internal crate used by foreign-types"
+license = "MIT/Apache-2.0"
+repository = "https://github.com/sfackler/foreign-types"
+
+[lib]
+proc-macro = true
+
+[dependencies.proc-macro2]
+version = "1.0"
+
+[dependencies.quote]
+version = "1.0"
+
+[dependencies.syn]
+version = "2.0"
+features = ["full"]
+
+[features]
+std = []
diff --git a/third_party/rust/foreign-types-macros/LICENSE-APACHE b/third_party/rust/foreign-types-macros/LICENSE-APACHE
new file mode 100644
index 0000000000..8f71f43fee
--- /dev/null
+++ b/third_party/rust/foreign-types-macros/LICENSE-APACHE
@@ -0,0 +1,202 @@
+                                 Apache License
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+                        http://www.apache.org/licenses/
+
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diff --git a/third_party/rust/foreign-types-macros/LICENSE-MIT b/third_party/rust/foreign-types-macros/LICENSE-MIT
new file mode 100644
index 0000000000..bb76d01469
--- /dev/null
+++ b/third_party/rust/foreign-types-macros/LICENSE-MIT
@@ -0,0 +1,19 @@
+Copyright (c) 2017 The foreign-types Developers
+
+Permission is hereby granted, free of charge, to any person obtaining a copy
+of this software and associated documentation files (the "Software"), to deal
+in the Software without restriction, including without limitation the rights
+to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+copies of the Software, and to permit persons to whom the Software is
+furnished to do so, subject to the following conditions:
+
+The above copyright notice and this permission notice shall be included in all
+copies or substantial portions of the Software.
+
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+SOFTWARE.
diff --git a/third_party/rust/foreign-types-macros/src/build.rs b/third_party/rust/foreign-types-macros/src/build.rs
new file mode 100644
index 0000000000..b50610f0f3
--- /dev/null
+++ b/third_party/rust/foreign-types-macros/src/build.rs
@@ -0,0 +1,261 @@
+use proc_macro2::TokenStream;
+use quote::quote;
+use syn::{Ident, Path};
+
+use crate::parse::{ForeignType, Input};
+
+fn ref_name(input: &ForeignType) -> Ident {
+    Ident::new(&format!("{}Ref", input.name), input.name.span())
+}
+
+pub fn build(input: Input) -> TokenStream {
+    let types = input
+        .types
+        .iter()
+        .map(|t| build_foreign_type(&input.crate_, t));
+    quote! {
+        #(#types)*
+    }
+}
+
+fn build_foreign_type(crate_: &Path, input: &ForeignType) -> TokenStream {
+    let decls = build_decls(crate_, input);
+    let oibits = build_oibits(crate_, input);
+    let foreign_impls = build_foreign_impls(crate_, input);
+    let drop_impl = build_drop_impl(crate_, input);
+    let deref_impls = build_deref_impls(crate_, input);
+    let borrow_impls = build_borrow_impls(crate_, input);
+    let as_ref_impls = build_as_ref_impls(crate_, input);
+    let clone_impl = build_clone_impl(crate_, input);
+    let to_owned_impl = build_to_owned_impl(crate_, input);
+
+    quote! {
+        #decls
+        #oibits
+        #foreign_impls
+        #drop_impl
+        #deref_impls
+        #borrow_impls
+        #as_ref_impls
+        #clone_impl
+        #to_owned_impl
+    }
+}
+
+fn build_decls(crate_: &Path, input: &ForeignType) -> TokenStream {
+    let attrs = &input.attrs;
+    let vis = &input.visibility;
+    let name = &input.name;
+    let generics = &input.generics;
+    let ctype = &input.ctype;
+    let phantom_data = input
+        .phantom_data
+        .as_ref()
+        .map(|d| quote!(, #crate_::export::PhantomData<#d>));
+    let ref_name = ref_name(input);
+    let ref_docs = format!(
+        "A borrowed reference to a [`{name}`](struct.{name}.html).",
+        name = name
+    );
+
+    quote! {
+        #(#attrs)*
+        #[repr(transparent)]
+        #vis struct #name #generics(#crate_::export::NonNull<#ctype> #phantom_data);
+
+        #[doc = #ref_docs]
+        #vis struct #ref_name #generics(#crate_::Opaque #phantom_data);
+    }
+}
+
+fn build_oibits(crate_: &Path, input: &ForeignType) -> TokenStream {
+    let oibits = input.oibits.iter().map(|t| build_oibit(crate_, input, t));
+
+    quote! {
+        #(#oibits)*
+    }
+}
+
+fn build_oibit(crate_: &Path, input: &ForeignType, oibit: &Ident) -> TokenStream {
+    let name = &input.name;
+    let ref_name = ref_name(input);
+    let (impl_generics, ty_generics, _) = input.generics.split_for_impl();
+
+    quote! {
+        unsafe impl #impl_generics #crate_::export::#oibit for #name #ty_generics {}
+        unsafe impl #impl_generics #crate_::export::#oibit for #ref_name #ty_generics {}
+    }
+}
+
+fn build_foreign_impls(crate_: &Path, input: &ForeignType) -> TokenStream {
+    let name = &input.name;
+    let ctype = &input.ctype;
+    let ref_name = ref_name(input);
+    let (impl_generics, ty_generics, _) = input.generics.split_for_impl();
+    let phantom_data = input
+        .phantom_data
+        .as_ref()
+        .map(|_| quote!(, #crate_::export::PhantomData));
+
+    quote! {
+        unsafe impl #impl_generics #crate_::ForeignType for #name #ty_generics {
+            type CType = #ctype;
+            type Ref = #ref_name #ty_generics;
+
+            #[inline]
+            unsafe fn from_ptr(ptr: *mut #ctype) -> #name #ty_generics {
+                debug_assert!(!ptr.is_null());
+                #name(<#crate_::export::NonNull<_>>::new_unchecked(ptr) #phantom_data)
+            }
+
+            #[inline]
+            fn as_ptr(&self) -> *mut #ctype {
+                <#crate_::export::NonNull<_>>::as_ptr(self.0)
+            }
+        }
+
+        unsafe impl #impl_generics #crate_::ForeignTypeRef for #ref_name #ty_generics {
+            type CType = #ctype;
+        }
+    }
+}
+
+fn build_drop_impl(crate_: &Path, input: &ForeignType) -> TokenStream {
+    let name = &input.name;
+    let drop = &input.drop;
+    let (impl_generics, ty_generics, _) = input.generics.split_for_impl();
+
+    quote! {
+        impl #impl_generics #crate_::export::Drop for #name #ty_generics {
+            #[inline]
+            fn drop(&mut self) {
+                unsafe {
+                    (#drop)(#crate_::ForeignType::as_ptr(self));
+                }
+            }
+        }
+    }
+}
+
+fn build_deref_impls(crate_: &Path, input: &ForeignType) -> TokenStream {
+    let name = &input.name;
+    let ref_name = ref_name(input);
+    let (impl_generics, ty_generics, _) = input.generics.split_for_impl();
+
+    quote! {
+        impl #impl_generics #crate_::export::Deref for #name #ty_generics {
+            type Target = #ref_name #ty_generics;
+
+            #[inline]
+            fn deref(&self) -> &#ref_name #ty_generics {
+                unsafe {
+                    #crate_::ForeignTypeRef::from_ptr(#crate_::ForeignType::as_ptr(self))
+                }
+            }
+        }
+
+        impl #impl_generics #crate_::export::DerefMut for #name #ty_generics {
+            #[inline]
+            fn deref_mut(&mut self) -> &mut #ref_name #ty_generics {
+                unsafe {
+                    #crate_::ForeignTypeRef::from_ptr_mut(#crate_::ForeignType::as_ptr(self))
+                }
+            }
+        }
+    }
+}
+
+fn build_borrow_impls(crate_: &Path, input: &ForeignType) -> TokenStream {
+    let name = &input.name;
+    let ref_name = ref_name(input);
+    let (impl_generics, ty_generics, _) = input.generics.split_for_impl();
+
+    quote! {
+        impl #impl_generics #crate_::export::Borrow<#ref_name #ty_generics> for #name #ty_generics {
+            #[inline]
+            fn borrow(&self) -> &#ref_name #ty_generics {
+                &**self
+            }
+        }
+
+        impl #impl_generics #crate_::export::BorrowMut<#ref_name #ty_generics> for #name #ty_generics {
+            #[inline]
+            fn borrow_mut(&mut self) -> &mut #ref_name #ty_generics {
+                &mut **self
+            }
+        }
+    }
+}
+
+fn build_as_ref_impls(crate_: &Path, input: &ForeignType) -> TokenStream {
+    let name = &input.name;
+    let ref_name = ref_name(input);
+    let (impl_generics, ty_generics, _) = input.generics.split_for_impl();
+
+    quote! {
+        impl #impl_generics #crate_::export::AsRef<#ref_name #ty_generics> for #name #ty_generics {
+            #[inline]
+            fn as_ref(&self) -> &#ref_name #ty_generics {
+                &**self
+            }
+        }
+
+        impl #impl_generics #crate_::export::AsMut<#ref_name #ty_generics> for #name #ty_generics {
+            #[inline]
+            fn as_mut(&mut self) -> &mut #ref_name #ty_generics {
+                &mut **self
+            }
+        }
+    }
+}
+
+fn build_clone_impl(crate_: &Path, input: &ForeignType) -> TokenStream {
+    let clone = match &input.clone {
+        Some(clone) => clone,
+        None => return quote!(),
+    };
+    let name = &input.name;
+    let (impl_generics, ty_generics, _) = input.generics.split_for_impl();
+
+    quote! {
+        impl #impl_generics #crate_::export::Clone for #name #ty_generics {
+            #[inline]
+            fn clone(&self) -> #name #ty_generics {
+                unsafe {
+                    let ptr = (#clone)(#crate_::ForeignType::as_ptr(self));
+                    #crate_::ForeignType::from_ptr(ptr)
+                }
+            }
+        }
+    }
+}
+
+#[cfg(feature = "std")]
+fn build_to_owned_impl(crate_: &Path, input: &ForeignType) -> TokenStream {
+    let clone = match &input.clone {
+        Some(clone) => clone,
+        None => return quote!(),
+    };
+    let name = &input.name;
+    let ref_name = ref_name(input);
+    let (impl_generics, ty_generics, _) = input.generics.split_for_impl();
+
+    quote! {
+        impl #impl_generics #crate_::export::ToOwned for #ref_name #ty_generics {
+            type Owned = #name #ty_generics;
+
+            #[inline]
+            fn to_owned(&self) -> #name #ty_generics {
+                unsafe {
+                    let ptr = (#clone)(#crate_::ForeignTypeRef::as_ptr(self));
+                    #crate_::ForeignType::from_ptr(ptr)
+                }
+            }
+        }
+    }
+}
+
+#[cfg(not(feature = "std"))]
+fn build_to_owned_impl(_: &Path, _: &ForeignType) -> TokenStream {
+    quote!()
+}
diff --git a/third_party/rust/foreign-types-macros/src/lib.rs b/third_party/rust/foreign-types-macros/src/lib.rs
new file mode 100644
index 0000000000..77c1e99fbc
--- /dev/null
+++ b/third_party/rust/foreign-types-macros/src/lib.rs
@@ -0,0 +1,15 @@
+extern crate proc_macro;
+
+use proc_macro::TokenStream;
+use syn::parse_macro_input;
+
+use crate::parse::Input;
+
+mod build;
+mod parse;
+
+#[proc_macro]
+pub fn foreign_type_impl(input: TokenStream) -> TokenStream {
+    let input = parse_macro_input!(input as Input);
+    build::build(input).into()
+}
diff --git a/third_party/rust/foreign-types-macros/src/parse.rs b/third_party/rust/foreign-types-macros/src/parse.rs
new file mode 100644
index 0000000000..ba11dc976c
--- /dev/null
+++ b/third_party/rust/foreign-types-macros/src/parse.rs
@@ -0,0 +1,140 @@
+use syn::parse::{self, Parse, ParseStream};
+use syn::punctuated::Punctuated;
+use syn::token;
+use syn::{braced, Attribute, Expr, Generics, Ident, Path, Token, Type, Visibility};
+
+mod kw {
+    syn::custom_keyword!(Sync);
+    syn::custom_keyword!(Send);
+    syn::custom_keyword!(PhantomData);
+    syn::custom_keyword!(CType);
+    syn::custom_keyword!(drop);
+    syn::custom_keyword!(clone);
+}
+
+pub struct Input {
+    pub crate_: Path,
+    pub types: Vec<ForeignType>,
+}
+
+impl Parse for Input {
+    fn parse(input: ParseStream) -> parse::Result<Input> {
+        let crate_ = input.parse()?;
+        let mut types = vec![];
+        while !input.is_empty() {
+            types.push(input.parse()?);
+        }
+
+        Ok(Input { crate_, types })
+    }
+}
+
+pub struct ForeignType {
+    pub attrs: Vec<Attribute>,
+    pub visibility: Visibility,
+    pub name: Ident,
+    pub generics: Generics,
+    pub oibits: Punctuated<Ident, Token![+]>,
+    pub phantom_data: Option<Type>,
+    pub ctype: Type,
+    pub drop: Expr,
+    pub clone: Option<Expr>,
+}
+
+impl Parse for ForeignType {
+    fn parse(input: ParseStream) -> parse::Result<ForeignType> {
+        let attrs = input.call(Attribute::parse_outer)?;
+        let visibility = input.parse()?;
+        input.parse::<Token![unsafe]>()?;
+        input.parse::<Token![type]>()?;
+        let name = input.parse()?;
+        let generics = input.parse()?;
+        let oibits = input.call(parse_oibits)?;
+        let inner;
+        braced!(inner in input);
+        let ctype = inner.call(parse_type::<kw::CType>)?;
+        let phantom_data = inner.call(parse_phantom_data)?;
+        let drop = inner.call(parse_fn::<kw::drop>)?;
+        let clone = inner.call(parse_clone)?;
+
+        Ok(ForeignType {
+            attrs,
+            visibility,
+            name,
+            generics,
+            oibits,
+            ctype,
+            phantom_data,
+            drop,
+            clone,
+        })
+    }
+}
+
+fn parse_oibit(input: ParseStream) -> parse::Result<Ident> {
+    let lookahead = input.lookahead1();
+    if lookahead.peek(kw::Sync) || lookahead.peek(kw::Send) {
+        input.parse()
+    } else {
+        Err(lookahead.error())
+    }
+}
+
+fn parse_oibits(input: ParseStream) -> parse::Result<Punctuated<Ident, Token![+]>> {
+    let mut out = Punctuated::new();
+
+    if input.parse::<Option<Token![:]>>()?.is_some() {
+        loop {
+            out.push_value(input.call(parse_oibit)?);
+            if input.peek(token::Brace) {
+                break;
+            }
+            out.push_punct(input.parse()?);
+            if input.peek(token::Brace) {
+                break;
+            }
+        }
+    }
+
+    Ok(out)
+}
+
+fn parse_type<T>(input: ParseStream) -> parse::Result<Type>
+where
+    T: Parse,
+{
+    input.parse::<Token![type]>()?;
+    input.parse::<T>()?;
+    input.parse::<Token![=]>()?;
+    let type_ = input.parse()?;
+    input.parse::<Token![;]>()?;
+    Ok(type_)
+}
+
+fn parse_phantom_data(input: ParseStream) -> parse::Result<Option<Type>> {
+    if input.peek(Token![type]) && input.peek2(kw::PhantomData) {
+        input.call(parse_type::<kw::PhantomData>).map(Some)
+    } else {
+        Ok(None)
+    }
+}
+
+fn parse_fn<T>(input: ParseStream) -> parse::Result<Expr>
+where
+    T: Parse,
+{
+    input.parse::<Token![fn]>()?;
+    input.parse::<T>()?;
+    input.parse::<Token![=]>()?;
+    let path = input.parse()?;
+    input.parse::<Token![;]>()?;
+    Ok(path)
+}
+
+fn parse_clone(input: ParseStream) -> parse::Result<Option<Expr>> {
+    if input.peek(Token![fn]) && input.peek2(kw::clone) {
+        input.call(parse_fn::<kw::clone>).map(Some)
+    } else {
+        Ok(None)
+    }
+}