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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 = "2021" rust-version = "1.73" name = "cxxbridge-cmd" version = "1.0.137" authors = ["David Tolnay "] build = false exclude = ["build.rs"] autolib = false autobins = false autoexamples = false autotests = false autobenches = false description = "C++ code generator for integrating `cxx` crate into a non-Cargo build." homepage = "https://cxx.rs" readme = false keywords = ["ffi"] categories = [ "development-tools::build-utils", "development-tools::ffi", ] license = "MIT OR Apache-2.0" repository = "https://github.com/dtolnay/cxx" [package.metadata.docs.rs] targets = ["x86_64-unknown-linux-gnu"] [features] experimental-async-fn = [] [[bin]] name = "cxxbridge" path = "src/main.rs" [dependencies.clap] version = "4.3.11" features = [ "error-context", "help", "std", "suggestions", "usage", ] default-features = false [dependencies.codespan-reporting] version = "0.11.1" [dependencies.proc-macro2] version = "1.0.74" features = ["span-locations"] default-features = false [dependencies.quote] version = "1.0.35" default-features = false [dependencies.syn] version = "2.0.46" features = [ "clone-impls", "full", "parsing", "printing", ] default-features = false cxxbridge-cmd-1.0.137/Cargo.toml.orig000064400000000000000000000021261046102023000154050ustar 00000000000000[package] name = "cxxbridge-cmd" version = "1.0.137" authors = ["David Tolnay "] categories = ["development-tools::build-utils", "development-tools::ffi"] description = "C++ code generator for integrating `cxx` crate into a non-Cargo build." edition = "2021" exclude = ["build.rs"] homepage = "https://cxx.rs" keywords = ["ffi"] license = "MIT OR Apache-2.0" repository = "https://github.com/dtolnay/cxx" rust-version = "1.73" [[bin]] name = "cxxbridge" path = "src/main.rs" [features] # incomplete features that are not covered by a compatibility guarantee: experimental-async-fn = [] [dependencies] clap = { version = "4.3.11", default-features = false, features = ["error-context", "help", "std", "suggestions", "usage"] } codespan-reporting = "0.11.1" proc-macro2 = { version = "1.0.74", default-features = false, features = ["span-locations"] } quote = { version = "1.0.35", default-features = false } syn = { version = "2.0.46", default-features = false, features = ["clone-impls", "full", "parsing", "printing"] } [package.metadata.docs.rs] targets = ["x86_64-unknown-linux-gnu"] cxxbridge-cmd-1.0.137/LICENSE-APACHE000064400000000000000000000227731046102023000144540ustar 00000000000000 Apache License Version 2.0, January 2004 http://www.apache.org/licenses/ TERMS AND CONDITIONS FOR USE, REPRODUCTION, AND DISTRIBUTION 1. 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END OF TERMS AND CONDITIONS cxxbridge-cmd-1.0.137/LICENSE-MIT000064400000000000000000000017771046102023000141650ustar 00000000000000Permission 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. cxxbridge-cmd-1.0.137/src/app.rs000064400000000000000000000143351046102023000144400ustar 00000000000000#[cfg(test)] #[path = "test.rs"] mod test; use super::{Opt, Output}; use crate::cfg::{self, CfgValue}; use crate::gen::include::Include; use crate::syntax::IncludeKind; use clap::builder::{ArgAction, ValueParser}; use clap::{Arg, Command}; use std::collections::{BTreeMap as Map, BTreeSet as Set}; use std::path::PathBuf; use std::process; use std::sync::{Arc, Mutex, PoisonError}; use syn::parse::Parser; const USAGE: &str = "\ cxxbridge .rs Emit .cc file for bridge to stdout cxxbridge .rs --header Emit .h file for bridge to stdout cxxbridge --header Emit \"rust/cxx.h\" header to stdout\ "; const TEMPLATE: &str = "\ {bin} {version} David Tolnay https://github.com/dtolnay/cxx {usage-heading} {usage} {all-args}\ "; fn app() -> Command { let mut app = Command::new("cxxbridge") .override_usage(USAGE) .help_template(TEMPLATE) .next_line_help(true) .disable_help_flag(true) .disable_version_flag(true) .arg(arg_input()) .arg(arg_cfg()) .arg(arg_cxx_impl_annotations()) .arg(arg_header()) .arg(arg_help()) .arg(arg_include()) .arg(arg_output()); if let Some(version) = option_env!("CARGO_PKG_VERSION") { app = app.arg(arg_version()).version(version); } app } const INPUT: &str = "input"; const CFG: &str = "cfg"; const CXX_IMPL_ANNOTATIONS: &str = "cxx-impl-annotations"; const HELP: &str = "help"; const HEADER: &str = "header"; const INCLUDE: &str = "include"; const OUTPUT: &str = "output"; const VERSION: &str = "version"; pub(super) fn from_args() -> Opt { let matches = app().get_matches(); if matches.get_flag(HELP) { let _ = app().print_long_help(); process::exit(0); } let input = matches.get_one::(INPUT).cloned(); let cxx_impl_annotations = matches .get_one::(CXX_IMPL_ANNOTATIONS) .map(String::clone); let header = matches.get_flag(HEADER); let include = matches .get_many::(INCLUDE) .unwrap_or_default() .map(|include| { if include.starts_with('<') && include.ends_with('>') { Include { path: include[1..include.len() - 1].to_owned(), kind: IncludeKind::Bracketed, } } else { Include { path: include.clone(), kind: IncludeKind::Quoted, } } }) .collect(); let mut outputs = Vec::new(); for path in matches.get_many::(OUTPUT).unwrap_or_default() { outputs.push(if path.as_os_str() == "-" { Output::Stdout } else { Output::File(path.clone()) }); } if outputs.is_empty() { outputs.push(Output::Stdout); } let mut cfg = Map::new(); for arg in matches.get_many::(CFG).unwrap_or_default() { let (name, value) = cfg::parse.parse_str(arg).unwrap(); cfg.entry(name).or_insert_with(Set::new).insert(value); } Opt { input, header, cxx_impl_annotations, include, outputs, cfg, } } fn arg_input() -> Arg { Arg::new(INPUT) .help("Input Rust source file containing #[cxx::bridge].") .required_unless_present_any([HEADER, HELP]) .value_parser(ValueParser::path_buf()) } fn arg_cfg() -> Arg { const HELP: &str = "\ Compilation configuration matching what will be used to build the Rust side of the bridge."; let bool_cfgs = Arc::new(Mutex::new(Map::::new())); Arg::new(CFG) .long(CFG) .num_args(1) .value_name("name=\"value\" | name[=true] | name=false") .action(ArgAction::Append) .value_parser(move |arg: &str| match cfg::parse.parse_str(arg) { Ok((_, CfgValue::Str(_))) => Ok(arg.to_owned()), Ok((name, CfgValue::Bool(value))) => { let mut bool_cfgs = bool_cfgs.lock().unwrap_or_else(PoisonError::into_inner); if let Some(&prev) = bool_cfgs.get(&name) { if prev != value { return Err(format!("cannot have both {0}=false and {0}=true", name)); } } bool_cfgs.insert(name, value); Ok(arg.to_owned()) } Err(_) => Err("expected name=\"value\", name=true, or name=false".to_owned()), }) .help(HELP) } fn arg_cxx_impl_annotations() -> Arg { const HELP: &str = "\ Optional annotation for implementations of C++ function wrappers that may be exposed to Rust. You may for example need to provide __declspec(dllexport) or __attribute__((visibility(\"default\"))) if Rust code from one shared object or executable depends on these C++ functions in another."; Arg::new(CXX_IMPL_ANNOTATIONS) .long(CXX_IMPL_ANNOTATIONS) .num_args(1) .value_name("annotation") .value_parser(ValueParser::string()) .help(HELP) } fn arg_header() -> Arg { const HELP: &str = "\ Emit header with declarations only. Optional if using `-o` with a path ending in `.h`."; Arg::new(HEADER).long(HEADER).num_args(0).help(HELP) } fn arg_help() -> Arg { Arg::new(HELP) .long(HELP) .help("Print help information.") .num_args(0) } fn arg_include() -> Arg { const HELP: &str = "\ Any additional headers to #include. The cxxbridge tool does not parse or even require the given paths to exist; they simply go into the generated C++ code as #include lines."; Arg::new(INCLUDE) .long(INCLUDE) .short('i') .num_args(1) .action(ArgAction::Append) .value_parser(ValueParser::string()) .help(HELP) } fn arg_output() -> Arg { const HELP: &str = "\ Path of file to write as output. Output goes to stdout if -o is not specified."; Arg::new(OUTPUT) .long(OUTPUT) .short('o') .num_args(1) .action(ArgAction::Append) .value_parser(ValueParser::path_buf()) .help(HELP) } fn arg_version() -> Arg { Arg::new(VERSION) .long(VERSION) .help("Print version information.") .action(ArgAction::Version) } cxxbridge-cmd-1.0.137/src/cfg.rs000064400000000000000000000056231046102023000144170ustar 00000000000000use crate::gen::{CfgEvaluator, CfgResult}; use std::collections::{BTreeMap as Map, BTreeSet as Set}; use std::fmt::{self, Debug}; use syn::parse::ParseStream; use syn::{Ident, LitBool, LitStr, Token}; #[derive(Ord, PartialOrd, Eq, PartialEq)] pub(crate) enum CfgValue { Bool(bool), Str(String), } impl CfgValue { const FALSE: Self = CfgValue::Bool(false); const TRUE: Self = CfgValue::Bool(true); } pub(crate) struct FlagsCfgEvaluator { map: Map>, } impl FlagsCfgEvaluator { pub(crate) fn new(map: Map>) -> Self { FlagsCfgEvaluator { map } } } impl CfgEvaluator for FlagsCfgEvaluator { fn eval(&self, name: &str, value: Option<&str>) -> CfgResult { let set = self.map.get(name); if let Some(value) = value { if let Some(set) = set { CfgResult::from(set.contains(&CfgValue::Str(value.to_owned()))) } else if name == "feature" { CfgResult::False } else { let msg = format!( "pass `--cfg {}=\"...\"` to be able to use this attribute", name, ); CfgResult::Undetermined { msg } } } else { let (mut is_false, mut is_true) = (false, false); if let Some(set) = set { is_false = set.contains(&CfgValue::FALSE); is_true = set.contains(&CfgValue::TRUE); } if is_false && is_true { let msg = format!("the cxxbridge flags say both {0}=false and {0}=true", name); CfgResult::Undetermined { msg } } else if is_false { CfgResult::False } else if is_true { CfgResult::True } else { let msg = format!( "pass either `--cfg {0}=true` or `--cfg {0}=false` to be able to use this cfg attribute", name, ); CfgResult::Undetermined { msg } } } } } impl Debug for CfgValue { fn fmt(&self, formatter: &mut fmt::Formatter) -> fmt::Result { match self { CfgValue::Bool(value) => Debug::fmt(value, formatter), CfgValue::Str(value) => Debug::fmt(value, formatter), } } } pub(crate) fn parse(input: ParseStream) -> syn::Result<(String, CfgValue)> { let ident: Ident = input.parse()?; let name = ident.to_string(); if input.is_empty() { return Ok((name, CfgValue::TRUE)); } input.parse::()?; let lookahead = input.lookahead1(); if lookahead.peek(LitBool) { let lit: LitBool = input.parse()?; Ok((name, CfgValue::Bool(lit.value))) } else if lookahead.peek(LitStr) { let lit: LitStr = input.parse()?; Ok((name, CfgValue::Str(lit.value()))) } else { Err(lookahead.error()) } } cxxbridge-cmd-1.0.137/src/gen/block.rs000064400000000000000000000023671046102023000155250ustar 00000000000000use proc_macro2::Ident; #[derive(Copy, Clone, PartialEq, Debug)] pub(crate) enum Block<'a> { AnonymousNamespace, Namespace(&'static str), UserDefinedNamespace(&'a Ident), InlineNamespace(&'static str), ExternC, } impl<'a> Block<'a> { pub(crate) fn write_begin(self, out: &mut String) { if let Block::InlineNamespace(_) = self { out.push_str("inline "); } self.write_common(out); out.push_str(" {\n"); } pub(crate) fn write_end(self, out: &mut String) { out.push_str("} // "); self.write_common(out); out.push('\n'); } fn write_common(self, out: &mut String) { match self { Block::AnonymousNamespace => out.push_str("namespace"), Block::Namespace(name) => { out.push_str("namespace "); out.push_str(name); } Block::UserDefinedNamespace(name) => { out.push_str("namespace "); out.push_str(&name.to_string()); } Block::InlineNamespace(name) => { out.push_str("namespace "); out.push_str(name); } Block::ExternC => out.push_str("extern \"C\""), } } } cxxbridge-cmd-1.0.137/src/gen/builtin.rs000064400000000000000000000321341046102023000160740ustar 00000000000000use crate::gen::block::Block; use crate::gen::ifndef; use crate::gen::out::{Content, OutFile}; #[derive(Default, PartialEq)] pub(crate) struct Builtins<'a> { pub panic: bool, pub rust_string: bool, pub rust_str: bool, pub rust_slice: bool, pub rust_box: bool, pub rust_vec: bool, pub rust_fn: bool, pub rust_isize: bool, pub opaque: bool, pub layout: bool, pub unsafe_bitcopy: bool, pub unsafe_bitcopy_t: bool, pub rust_error: bool, pub manually_drop: bool, pub maybe_uninit: bool, pub trycatch: bool, pub ptr_len: bool, pub repr_fat: bool, pub rust_str_new_unchecked: bool, pub rust_str_repr: bool, pub rust_slice_new: bool, pub rust_slice_repr: bool, pub relocatable: bool, pub relocatable_or_array: bool, pub friend_impl: bool, pub is_complete: bool, pub destroy: bool, pub deleter_if: bool, pub content: Content<'a>, } impl<'a> Builtins<'a> { pub(crate) fn new() -> Self { Builtins::default() } } pub(super) fn write(out: &mut OutFile) { if out.builtin == Default::default() { return; } let include = &mut out.include; let builtin = &mut out.builtin; let out = &mut builtin.content; if builtin.rust_string { include.array = true; include.cstdint = true; include.string = true; } if builtin.rust_str { include.array = true; include.cstdint = true; include.string = true; builtin.friend_impl = true; } if builtin.rust_vec { include.algorithm = true; include.array = true; include.cassert = true; include.cstddef = true; include.cstdint = true; include.initializer_list = true; include.iterator = true; include.new = true; include.stdexcept = true; include.type_traits = true; include.utility = true; builtin.panic = true; builtin.rust_slice = true; builtin.unsafe_bitcopy_t = true; } if builtin.rust_slice { include.array = true; include.cassert = true; include.cstddef = true; include.cstdint = true; include.iterator = true; include.stdexcept = true; include.type_traits = true; builtin.friend_impl = true; builtin.layout = true; builtin.panic = true; } if builtin.rust_box { include.new = true; include.type_traits = true; include.utility = true; } if builtin.rust_fn { include.utility = true; } if builtin.rust_error { include.exception = true; builtin.friend_impl = true; } if builtin.rust_isize { include.basetsd = true; include.sys_types = true; } if builtin.relocatable_or_array { include.cstddef = true; builtin.relocatable = true; } if builtin.relocatable { include.type_traits = true; } if builtin.layout { include.type_traits = true; include.cstddef = true; builtin.is_complete = true; } if builtin.is_complete { include.cstddef = true; include.type_traits = true; } if builtin.unsafe_bitcopy { builtin.unsafe_bitcopy_t = true; } if builtin.trycatch { builtin.ptr_len = true; } out.begin_block(Block::Namespace("rust")); out.begin_block(Block::InlineNamespace("cxxbridge1")); let cxx_header = include.has_cxx_header(); if !cxx_header { writeln!(out, "// #include \"rust/cxx.h\""); ifndef::write(out, builtin.panic, "CXXBRIDGE1_PANIC"); if builtin.rust_string { out.next_section(); writeln!(out, "struct unsafe_bitcopy_t;"); } if builtin.friend_impl { out.begin_block(Block::AnonymousNamespace); writeln!(out, "template "); writeln!(out, "class impl;"); out.end_block(Block::AnonymousNamespace); } out.next_section(); if builtin.rust_str && !builtin.rust_string { writeln!(out, "class String;"); } if builtin.layout && !builtin.opaque { writeln!(out, "class Opaque;"); } if builtin.rust_slice { out.next_section(); writeln!(out, "template "); writeln!(out, "::std::size_t size_of();"); writeln!(out, "template "); writeln!(out, "::std::size_t align_of();"); } ifndef::write(out, builtin.rust_string, "CXXBRIDGE1_RUST_STRING"); ifndef::write(out, builtin.rust_str, "CXXBRIDGE1_RUST_STR"); ifndef::write(out, builtin.rust_slice, "CXXBRIDGE1_RUST_SLICE"); ifndef::write(out, builtin.rust_box, "CXXBRIDGE1_RUST_BOX"); ifndef::write(out, builtin.unsafe_bitcopy_t, "CXXBRIDGE1_RUST_BITCOPY_T"); ifndef::write(out, builtin.unsafe_bitcopy, "CXXBRIDGE1_RUST_BITCOPY"); ifndef::write(out, builtin.rust_vec, "CXXBRIDGE1_RUST_VEC"); ifndef::write(out, builtin.rust_fn, "CXXBRIDGE1_RUST_FN"); ifndef::write(out, builtin.rust_error, "CXXBRIDGE1_RUST_ERROR"); ifndef::write(out, builtin.rust_isize, "CXXBRIDGE1_RUST_ISIZE"); ifndef::write(out, builtin.opaque, "CXXBRIDGE1_RUST_OPAQUE"); ifndef::write(out, builtin.is_complete, "CXXBRIDGE1_IS_COMPLETE"); ifndef::write(out, builtin.layout, "CXXBRIDGE1_LAYOUT"); ifndef::write(out, builtin.relocatable, "CXXBRIDGE1_RELOCATABLE"); } if builtin.rust_str_new_unchecked { out.next_section(); writeln!(out, "class Str::uninit {{}};"); writeln!(out, "inline Str::Str(uninit) noexcept {{}}"); } if builtin.rust_slice_new { out.next_section(); writeln!(out, "template "); writeln!(out, "class Slice::uninit {{}};"); writeln!(out, "template "); writeln!(out, "inline Slice::Slice(uninit) noexcept {{}}"); } out.begin_block(Block::Namespace("repr")); if builtin.repr_fat { include.array = true; include.cstdint = true; out.next_section(); writeln!(out, "using Fat = ::std::array<::std::uintptr_t, 2>;"); } if builtin.ptr_len { include.cstddef = true; out.next_section(); writeln!(out, "struct PtrLen final {{"); writeln!(out, " void *ptr;"); writeln!(out, " ::std::size_t len;"); writeln!(out, "}};"); } out.end_block(Block::Namespace("repr")); out.begin_block(Block::Namespace("detail")); if builtin.maybe_uninit { include.cstddef = true; include.new = true; out.next_section(); writeln!(out, "template "); writeln!(out, "struct operator_new {{"); writeln!( out, " void *operator()(::std::size_t sz) {{ return ::operator new(sz); }}", ); writeln!(out, "}};"); out.next_section(); writeln!(out, "template "); writeln!( out, "struct operator_new {{", ); writeln!( out, " void *operator()(::std::size_t sz) {{ return T::operator new(sz); }}", ); writeln!(out, "}};"); } if builtin.trycatch { include.string = true; out.next_section(); writeln!(out, "class Fail final {{"); writeln!(out, " ::rust::repr::PtrLen &throw$;"); writeln!(out, "public:"); writeln!( out, " Fail(::rust::repr::PtrLen &throw$) noexcept : throw$(throw$) {{}}", ); writeln!(out, " void operator()(char const *) noexcept;"); writeln!(out, " void operator()(std::string const &) noexcept;"); writeln!(out, "}};"); } out.end_block(Block::Namespace("detail")); if builtin.manually_drop { out.next_section(); include.utility = true; writeln!(out, "template "); writeln!(out, "union ManuallyDrop {{"); writeln!(out, " T value;"); writeln!( out, " ManuallyDrop(T &&value) : value(::std::move(value)) {{}}", ); writeln!(out, " ~ManuallyDrop() {{}}"); writeln!(out, "}};"); } if builtin.maybe_uninit { include.cstddef = true; out.next_section(); writeln!(out, "template "); writeln!(out, "union MaybeUninit {{"); writeln!(out, " T value;"); writeln!( out, " void *operator new(::std::size_t sz) {{ return detail::operator_new{{}}(sz); }}", ); writeln!(out, " MaybeUninit() {{}}"); writeln!(out, " ~MaybeUninit() {{}}"); writeln!(out, "}};"); } out.begin_block(Block::AnonymousNamespace); if builtin.rust_str_new_unchecked || builtin.rust_str_repr { out.next_section(); writeln!(out, "template <>"); writeln!(out, "class impl final {{"); writeln!(out, "public:"); if builtin.rust_str_new_unchecked { writeln!( out, " static Str new_unchecked(repr::Fat repr) noexcept {{", ); writeln!(out, " Str str = Str::uninit{{}};"); writeln!(out, " str.repr = repr;"); writeln!(out, " return str;"); writeln!(out, " }}"); } if builtin.rust_str_repr { writeln!(out, " static repr::Fat repr(Str str) noexcept {{"); writeln!(out, " return str.repr;"); writeln!(out, " }}"); } writeln!(out, "}};"); } if builtin.rust_slice_new || builtin.rust_slice_repr { out.next_section(); writeln!(out, "template "); writeln!(out, "class impl> final {{"); writeln!(out, "public:"); if builtin.rust_slice_new { writeln!(out, " static Slice slice(repr::Fat repr) noexcept {{"); writeln!(out, " Slice slice = typename Slice::uninit{{}};"); writeln!(out, " slice.repr = repr;"); writeln!(out, " return slice;"); writeln!(out, " }}"); } if builtin.rust_slice_repr { writeln!(out, " static repr::Fat repr(Slice slice) noexcept {{"); writeln!(out, " return slice.repr;"); writeln!(out, " }}"); } writeln!(out, "}};"); } if builtin.rust_error { out.next_section(); writeln!(out, "template <>"); writeln!(out, "class impl final {{"); writeln!(out, "public:"); writeln!(out, " static Error error(repr::PtrLen repr) noexcept {{"); writeln!(out, " Error error;"); writeln!(out, " error.msg = static_cast(repr.ptr);"); writeln!(out, " error.len = repr.len;"); writeln!(out, " return error;"); writeln!(out, " }}"); writeln!(out, "}};"); } if builtin.destroy { out.next_section(); writeln!(out, "template "); writeln!(out, "void destroy(T *ptr) {{"); writeln!(out, " ptr->~T();"); writeln!(out, "}}"); } if builtin.deleter_if { out.next_section(); writeln!(out, "template struct deleter_if {{"); writeln!(out, " template void operator()(T *) {{}}"); writeln!(out, "}};"); out.next_section(); writeln!(out, "template <> struct deleter_if {{"); writeln!( out, " template void operator()(T *ptr) {{ ptr->~T(); }}", ); writeln!(out, "}};"); } if builtin.relocatable_or_array { out.next_section(); writeln!(out, "template "); writeln!(out, "struct IsRelocatableOrArray : IsRelocatable {{}};"); writeln!(out, "template "); writeln!( out, "struct IsRelocatableOrArray : IsRelocatableOrArray {{}};", ); } out.end_block(Block::AnonymousNamespace); out.end_block(Block::InlineNamespace("cxxbridge1")); if builtin.trycatch { out.begin_block(Block::Namespace("behavior")); include.exception = true; include.type_traits = true; include.utility = true; writeln!(out, "class missing {{}};"); writeln!(out, "missing trycatch(...);"); writeln!(out); writeln!(out, "template "); writeln!(out, "static typename ::std::enable_if<"); writeln!( out, " ::std::is_same(), ::std::declval())),", ); writeln!(out, " missing>::value>::type"); writeln!(out, "trycatch(Try &&func, Fail &&fail) noexcept try {{"); writeln!(out, " func();"); writeln!(out, "}} catch (::std::exception const &e) {{"); writeln!(out, " fail(e.what());"); writeln!(out, "}}"); out.end_block(Block::Namespace("behavior")); } out.end_block(Block::Namespace("rust")); } cxxbridge-cmd-1.0.137/src/gen/cfg.rs000064400000000000000000000076271046102023000151760ustar 00000000000000use crate::gen::{CfgEvaluator, CfgResult}; use crate::syntax::cfg::CfgExpr; use crate::syntax::report::Errors; use crate::syntax::Api; use quote::quote; use std::collections::BTreeSet as Set; use syn::{Error, LitStr}; pub(super) struct UnsupportedCfgEvaluator; impl CfgEvaluator for UnsupportedCfgEvaluator { fn eval(&self, name: &str, value: Option<&str>) -> CfgResult { let _ = name; let _ = value; let msg = "cfg attribute is not supported".to_owned(); CfgResult::Undetermined { msg } } } pub(super) fn strip( cx: &mut Errors, cfg_errors: &mut Set, cfg_evaluator: &dyn CfgEvaluator, apis: &mut Vec, ) { apis.retain(|api| eval(cx, cfg_errors, cfg_evaluator, api.cfg())); for api in apis { match api { Api::Struct(strct) => strct .fields .retain(|field| eval(cx, cfg_errors, cfg_evaluator, &field.cfg)), Api::Enum(enm) => enm .variants .retain(|variant| eval(cx, cfg_errors, cfg_evaluator, &variant.cfg)), _ => {} } } } pub(super) fn eval( cx: &mut Errors, cfg_errors: &mut Set, cfg_evaluator: &dyn CfgEvaluator, expr: &CfgExpr, ) -> bool { match try_eval(cfg_evaluator, expr) { Ok(value) => value, Err(errors) => { for error in errors { if cfg_errors.insert(error.to_string()) { cx.push(error); } } false } } } fn try_eval(cfg_evaluator: &dyn CfgEvaluator, expr: &CfgExpr) -> Result> { match expr { CfgExpr::Unconditional => Ok(true), CfgExpr::Eq(ident, string) => { let key = ident.to_string(); let value = string.as_ref().map(LitStr::value); match cfg_evaluator.eval(&key, value.as_deref()) { CfgResult::True => Ok(true), CfgResult::False => Ok(false), CfgResult::Undetermined { msg } => { let span = quote!(#ident #string); Err(vec![Error::new_spanned(span, msg)]) } } } CfgExpr::All(list) => { let mut all_errors = Vec::new(); for subexpr in list { match try_eval(cfg_evaluator, subexpr) { Ok(true) => {} Ok(false) => return Ok(false), Err(errors) => all_errors.extend(errors), } } if all_errors.is_empty() { Ok(true) } else { Err(all_errors) } } CfgExpr::Any(list) => { let mut all_errors = Vec::new(); for subexpr in list { match try_eval(cfg_evaluator, subexpr) { Ok(true) => return Ok(true), Ok(false) => {} Err(errors) => all_errors.extend(errors), } } if all_errors.is_empty() { Ok(false) } else { Err(all_errors) } } CfgExpr::Not(subexpr) => match try_eval(cfg_evaluator, subexpr) { Ok(value) => Ok(!value), Err(errors) => Err(errors), }, } } impl Api { fn cfg(&self) -> &CfgExpr { match self { Api::Include(include) => &include.cfg, Api::Struct(strct) => &strct.cfg, Api::Enum(enm) => &enm.cfg, Api::CxxType(ety) | Api::RustType(ety) => &ety.cfg, Api::CxxFunction(efn) | Api::RustFunction(efn) => &efn.cfg, Api::TypeAlias(alias) => &alias.cfg, Api::Impl(imp) => &imp.cfg, } } } impl From for CfgResult { fn from(value: bool) -> Self { if value { CfgResult::True } else { CfgResult::False } } } cxxbridge-cmd-1.0.137/src/gen/check.rs000064400000000000000000000016341046102023000155040ustar 00000000000000use crate::gen::Opt; use crate::syntax::report::Errors; use crate::syntax::{error, Api}; use quote::{quote, quote_spanned}; use std::path::{Component, Path}; pub(super) use crate::syntax::check::{typecheck, Generator}; pub(super) fn precheck(cx: &mut Errors, apis: &[Api], opt: &Opt) { if !opt.allow_dot_includes { check_dot_includes(cx, apis); } } fn check_dot_includes(cx: &mut Errors, apis: &[Api]) { for api in apis { if let Api::Include(include) = api { let first_component = Path::new(&include.path).components().next(); if let Some(Component::CurDir | Component::ParentDir) = first_component { let begin = quote_spanned!(include.begin_span=> .); let end = quote_spanned!(include.end_span=> .); let span = quote!(#begin #end); cx.error(span, error::DOT_INCLUDE.msg); } } } } cxxbridge-cmd-1.0.137/src/gen/error.rs000064400000000000000000000120311046102023000155510ustar 00000000000000use crate::gen::fs; use crate::syntax; use codespan_reporting::diagnostic::{Diagnostic, Label}; use codespan_reporting::files::SimpleFiles; use codespan_reporting::term::termcolor::{ColorChoice, StandardStream, WriteColor}; use codespan_reporting::term::{self, Config}; use std::borrow::Cow; use std::error::Error as StdError; use std::fmt::{self, Display}; use std::io::{self, Write}; use std::ops::Range; use std::path::{Path, PathBuf}; use std::process; use std::str::Utf8Error; pub(crate) type Result = std::result::Result; #[derive(Debug)] pub(crate) enum Error { NoBridgeMod, Fs(fs::Error), Utf8(PathBuf, Utf8Error), Syn(syn::Error), } impl Display for Error { fn fmt(&self, f: &mut fmt::Formatter) -> fmt::Result { match self { Error::NoBridgeMod => write!(f, "no #[cxx::bridge] module found"), Error::Fs(err) => err.fmt(f), Error::Utf8(path, _) => write!(f, "Failed to read file `{}`", path.display()), Error::Syn(err) => err.fmt(f), } } } impl StdError for Error { fn source(&self) -> Option<&(dyn StdError + 'static)> { match self { Error::Fs(err) => err.source(), Error::Utf8(_, err) => Some(err), Error::Syn(err) => err.source(), Error::NoBridgeMod => None, } } } impl From for Error { fn from(err: fs::Error) -> Self { Error::Fs(err) } } impl From for Error { fn from(err: syn::Error) -> Self { Error::Syn(err) } } pub(super) fn format_err(path: &Path, source: &str, error: Error) -> ! { match error { Error::Syn(syn_error) => { let syn_error = sort_syn_errors(syn_error); let writer = StandardStream::stderr(ColorChoice::Auto); let ref mut stderr = writer.lock(); for error in syn_error { let _ = writeln!(stderr); display_syn_error(stderr, path, source, error); } } Error::NoBridgeMod => { let _ = writeln!( io::stderr(), "cxxbridge: no #[cxx::bridge] module found in {}", path.display(), ); } _ => { let _ = writeln!(io::stderr(), "cxxbridge: {}", report(error)); } } process::exit(1); } pub(crate) fn report(error: impl StdError) -> impl Display { struct Report(E); impl Display for Report { fn fmt(&self, formatter: &mut fmt::Formatter) -> fmt::Result { write!(formatter, "{}", self.0)?; let mut error: &dyn StdError = &self.0; while let Some(cause) = error.source() { write!(formatter, "\n\nCaused by:\n {}", cause)?; error = cause; } Ok(()) } } Report(error) } fn sort_syn_errors(error: syn::Error) -> Vec { let mut errors: Vec<_> = error.into_iter().collect(); errors.sort_by_key(|e| { let start = e.span().start(); (start.line, start.column) }); errors } fn display_syn_error(stderr: &mut dyn WriteColor, path: &Path, source: &str, error: syn::Error) { let span = error.span(); let start = span.start(); let end = span.end(); let mut start_offset = 0; for _ in 1..start.line { start_offset += source[start_offset..].find('\n').unwrap() + 1; } let start_column = source[start_offset..] .chars() .take(start.column) .map(char::len_utf8) .sum::(); start_offset += start_column; let mut end_offset = start_offset; if start.line == end.line { end_offset -= start_column; } else { for _ in 0..end.line - start.line { end_offset += source[end_offset..].find('\n').unwrap() + 1; } } end_offset += source[end_offset..] .chars() .take(end.column) .map(char::len_utf8) .sum::(); let mut path = path.to_string_lossy(); if path == "-" { path = Cow::Borrowed(if cfg!(unix) { "/dev/stdin" } else { "stdin" }); } let mut files = SimpleFiles::new(); let file = files.add(path, source); let diagnostic = diagnose(file, start_offset..end_offset, error); let config = Config::default(); let _ = term::emit(stderr, &config, &files, &diagnostic); } fn diagnose(file: usize, range: Range, error: syn::Error) -> Diagnostic { let message = error.to_string(); let info = syntax::error::ERRORS .iter() .find(|e| message.contains(e.msg)); let mut diagnostic = Diagnostic::error().with_message(&message); let mut label = Label::primary(file, range); if let Some(info) = info { label.message = info.label.map_or(message, str::to_owned); diagnostic.labels.push(label); diagnostic.notes.extend(info.note.map(str::to_owned)); } else { label.message = message; diagnostic.labels.push(label); } diagnostic.code = Some("cxxbridge".to_owned()); diagnostic } cxxbridge-cmd-1.0.137/src/gen/file.rs000064400000000000000000000043001046102023000153370ustar 00000000000000use crate::syntax::file::Module; use crate::syntax::namespace::Namespace; use syn::parse::discouraged::Speculative; use syn::parse::{Error, Parse, ParseStream, Result}; use syn::{braced, Attribute, Ident, Item, Meta, Token, Visibility}; pub(crate) struct File { pub modules: Vec, } impl Parse for File { fn parse(input: ParseStream) -> Result { let mut modules = Vec::new(); parse(input, &mut modules)?; Ok(File { modules }) } } fn parse(input: ParseStream, modules: &mut Vec) -> Result<()> { input.call(Attribute::parse_inner)?; while !input.is_empty() { let mut cxx_bridge = false; let mut namespace = Namespace::ROOT; let mut attrs = input.call(Attribute::parse_outer)?; for attr in &attrs { let path = &attr.path().segments; if path.len() == 2 && path[0].ident == "cxx" && path[1].ident == "bridge" { cxx_bridge = true; namespace = parse_args(attr)?; break; } } let ahead = input.fork(); ahead.parse::()?; ahead.parse::>()?; if !ahead.peek(Token![mod]) { let item: Item = input.parse()?; if cxx_bridge { return Err(Error::new_spanned(item, "expected a module")); } continue; } if cxx_bridge { let mut module: Module = input.parse()?; module.namespace = namespace; attrs.extend(module.attrs); module.attrs = attrs; modules.push(module); } else { input.advance_to(&ahead); input.parse::()?; input.parse::()?; let semi: Option = input.parse()?; if semi.is_none() { let content; braced!(content in input); parse(&content, modules)?; } } } Ok(()) } fn parse_args(attr: &Attribute) -> Result { if let Meta::Path(_) = attr.meta { Ok(Namespace::ROOT) } else { attr.parse_args_with(Namespace::parse_bridge_attr_namespace) } } cxxbridge-cmd-1.0.137/src/gen/fs.rs000064400000000000000000000107631046102023000150420ustar 00000000000000#![allow(dead_code)] use std::error::Error as StdError; use std::fmt::{self, Display}; use std::io::{self, Read}; use std::path::{Path, PathBuf}; pub(crate) type Result = std::result::Result; #[derive(Debug)] pub(crate) struct Error { source: Option, message: String, } impl Error { pub(crate) fn kind(&self) -> io::ErrorKind { match &self.source { Some(io_error) => io_error.kind(), None => io::ErrorKind::Other, } } } impl Display for Error { fn fmt(&self, formatter: &mut fmt::Formatter) -> fmt::Result { formatter.write_str(&self.message) } } impl StdError for Error { fn source(&self) -> Option<&(dyn StdError + 'static)> { let source = self.source.as_ref()?; Some(source) } } macro_rules! err { ($io_error:expr, $fmt:expr $(, $path:expr)* $(,)?) => { Err(Error { source: Option::from($io_error), message: format!($fmt $(, $path.display())*), }) } } pub(crate) fn copy(from: impl AsRef, to: impl AsRef) -> Result { let from = from.as_ref(); let to = to.as_ref(); match std::fs::copy(from, to) { Ok(n) => Ok(n), Err(e) => err!(e, "Failed to copy `{}` -> `{}`", from, to), } } pub(crate) fn create_dir_all(path: impl AsRef) -> Result<()> { let path = path.as_ref(); match std::fs::create_dir_all(path) { Ok(()) => Ok(()), Err(e) => err!(e, "Failed to create directory `{}`", path), } } pub(crate) fn current_dir() -> Result { match std::env::current_dir() { Ok(dir) => Ok(dir), Err(e) => err!(e, "Failed to determine current directory"), } } pub(crate) fn exists(path: impl AsRef) -> bool { let path = path.as_ref(); // If path is a symlink, this returns true, regardless of whether the // symlink points to a path that exists. std::fs::symlink_metadata(path).is_ok() } pub(crate) fn read(path: impl AsRef) -> Result> { let path = path.as_ref(); match std::fs::read(path) { Ok(string) => Ok(string), Err(e) => err!(e, "Failed to read file `{}`", path), } } pub(crate) fn read_stdin() -> Result> { let mut bytes = Vec::new(); match io::stdin().read_to_end(&mut bytes) { Ok(_len) => Ok(bytes), Err(e) => err!(e, "Failed to read input from stdin"), } } pub(crate) fn remove_file(path: impl AsRef) -> Result<()> { let path = path.as_ref(); match std::fs::remove_file(path) { Ok(()) => Ok(()), Err(e) => err!(e, "Failed to remove file `{}`", path), } } pub(crate) fn remove_dir(path: impl AsRef) -> Result<()> { let path = path.as_ref(); match std::fs::remove_dir(path) { Ok(()) => Ok(()), Err(e) => err!(e, "Failed to remove directory `{}`", path), } } fn symlink<'a>( original: &'a Path, link: &'a Path, fun: fn(&'a Path, &'a Path) -> io::Result<()>, ) -> Result<()> { match fun(original, link) { Ok(()) => Ok(()), Err(e) => err!( e, "Failed to create symlink `{}` pointing to `{}`", link, original, ), } } pub(crate) fn symlink_fail(original: impl AsRef, link: impl AsRef) -> Result<()> { err!( None, "Failed to create symlink `{}` pointing to `{}`", link.as_ref(), original.as_ref(), ) } #[cfg(unix)] #[allow(unused_imports)] pub(crate) use self::symlink_file as symlink_dir; #[cfg(not(any(unix, windows)))] #[allow(unused_imports)] pub(crate) use self::symlink_fail as symlink_dir; #[cfg(unix)] pub(crate) fn symlink_file(original: impl AsRef, link: impl AsRef) -> Result<()> { symlink(original.as_ref(), link.as_ref(), std::os::unix::fs::symlink) } #[cfg(windows)] pub(crate) fn symlink_file(original: impl AsRef, link: impl AsRef) -> Result<()> { symlink( original.as_ref(), link.as_ref(), std::os::windows::fs::symlink_file, ) } #[cfg(windows)] pub(crate) fn symlink_dir(original: impl AsRef, link: impl AsRef) -> Result<()> { symlink( original.as_ref(), link.as_ref(), std::os::windows::fs::symlink_dir, ) } pub(crate) fn write(path: impl AsRef, contents: impl AsRef<[u8]>) -> Result<()> { let path = path.as_ref(); match std::fs::write(path, contents) { Ok(()) => Ok(()), Err(e) => err!(e, "Failed to write file `{}`", path), } } cxxbridge-cmd-1.0.137/src/gen/ifndef.rs000064400000000000000000000026651046102023000156670ustar 00000000000000use crate::gen::include::HEADER; use crate::gen::out::Content; pub(super) fn write(out: &mut Content, needed: bool, guard: &str) { let ifndef = format!("#ifndef {}", guard); let define = format!("#define {}", guard); let endif = format!("#endif // {}", guard); let mut offset = 0; loop { let begin = find_line(offset, &ifndef); let end = find_line(offset, &endif); if let (Some(begin), Some(end)) = (begin, end) { if !needed { return; } out.next_section(); if offset == 0 { writeln!(out, "{}", ifndef); writeln!(out, "{}", define); } for line in HEADER[begin + ifndef.len()..end].trim().lines() { if line != define && !line.trim_start().starts_with("//") { writeln!(out, "{}", line); } } offset = end + endif.len(); } else if offset == 0 { panic!("not found in cxx.h header: {}", guard) } else { writeln!(out, "{}", endif); return; } } } fn find_line(mut offset: usize, line: &str) -> Option { loop { offset += HEADER[offset..].find(line)?; let rest = &HEADER[offset + line.len()..]; if rest.starts_with('\n') || rest.starts_with('\r') { return Some(offset); } offset += line.len(); } } cxxbridge-cmd-1.0.137/src/gen/include/cxx.h000064400000000000000000000700171046102023000164600ustar 00000000000000#pragma once #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #if defined(_WIN32) #include #else #include #endif namespace rust { inline namespace cxxbridge1 { struct unsafe_bitcopy_t; namespace { template class impl; } #ifndef CXXBRIDGE1_RUST_STRING #define CXXBRIDGE1_RUST_STRING // https://cxx.rs/binding/string.html class String final { public: String() noexcept; String(const String &) noexcept; String(String &&) noexcept; ~String() noexcept; String(const std::string &); String(const char *); String(const char *, std::size_t); String(const char16_t *); String(const char16_t *, std::size_t); // Replace invalid Unicode data with the replacement character (U+FFFD). static String lossy(const std::string &) noexcept; static String lossy(const char *) noexcept; static String lossy(const char *, std::size_t) noexcept; static String lossy(const char16_t *) noexcept; static String lossy(const char16_t *, std::size_t) noexcept; String &operator=(const String &) &noexcept; String &operator=(String &&) &noexcept; explicit operator std::string() const; // Note: no null terminator. const char *data() const noexcept; std::size_t size() const noexcept; std::size_t length() const noexcept; bool empty() const noexcept; const char *c_str() noexcept; std::size_t capacity() const noexcept; void reserve(size_t new_cap) noexcept; using iterator = char *; iterator begin() noexcept; iterator end() noexcept; using const_iterator = const char *; const_iterator begin() const noexcept; const_iterator end() const noexcept; const_iterator cbegin() const noexcept; const_iterator cend() const noexcept; bool operator==(const String &) const noexcept; bool operator!=(const String &) const noexcept; bool operator<(const String &) const noexcept; bool operator<=(const String &) const noexcept; bool operator>(const String &) const noexcept; bool operator>=(const String &) const noexcept; void swap(String &) noexcept; // Internal API only intended for the cxxbridge code generator. String(unsafe_bitcopy_t, const String &) noexcept; private: struct lossy_t; String(lossy_t, const char *, std::size_t) noexcept; String(lossy_t, const char16_t *, std::size_t) noexcept; friend void swap(String &lhs, String &rhs) noexcept { lhs.swap(rhs); } // Size and alignment statically verified by rust_string.rs. std::array repr; }; #endif // CXXBRIDGE1_RUST_STRING #ifndef CXXBRIDGE1_RUST_STR #define CXXBRIDGE1_RUST_STR // https://cxx.rs/binding/str.html class Str final { public: Str() noexcept; Str(const String &) noexcept; Str(const std::string &); Str(const char *); Str(const char *, std::size_t); Str &operator=(const Str &) &noexcept = default; explicit operator std::string() const; // Note: no null terminator. const char *data() const noexcept; std::size_t size() const noexcept; std::size_t length() const noexcept; bool empty() const noexcept; // Important in order for System V ABI to pass in registers. Str(const Str &) noexcept = default; ~Str() noexcept = default; using iterator = const char *; using const_iterator = const char *; const_iterator begin() const noexcept; const_iterator end() const noexcept; const_iterator cbegin() const noexcept; const_iterator cend() const noexcept; bool operator==(const Str &) const noexcept; bool operator!=(const Str &) const noexcept; bool operator<(const Str &) const noexcept; bool operator<=(const Str &) const noexcept; bool operator>(const Str &) const noexcept; bool operator>=(const Str &) const noexcept; void swap(Str &) noexcept; private: class uninit; Str(uninit) noexcept; friend impl; std::array repr; }; #endif // CXXBRIDGE1_RUST_STR #ifndef CXXBRIDGE1_RUST_SLICE namespace detail { template struct copy_assignable_if {}; template <> struct copy_assignable_if { copy_assignable_if() noexcept = default; copy_assignable_if(const copy_assignable_if &) noexcept = default; copy_assignable_if &operator=(const copy_assignable_if &) &noexcept = delete; copy_assignable_if &operator=(copy_assignable_if &&) &noexcept = default; }; } // namespace detail // https://cxx.rs/binding/slice.html template class Slice final : private detail::copy_assignable_if::value> { public: using value_type = T; Slice() noexcept; Slice(T *, std::size_t count) noexcept; template explicit Slice(C& c) : Slice(c.data(), c.size()) {} Slice &operator=(const Slice &) &noexcept = default; Slice &operator=(Slice &&) &noexcept = default; T *data() const noexcept; std::size_t size() const noexcept; std::size_t length() const noexcept; bool empty() const noexcept; T &operator[](std::size_t n) const noexcept; T &at(std::size_t n) const; T &front() const noexcept; T &back() const noexcept; // Important in order for System V ABI to pass in registers. Slice(const Slice &) noexcept = default; ~Slice() noexcept = default; class iterator; iterator begin() const noexcept; iterator end() const noexcept; void swap(Slice &) noexcept; private: class uninit; Slice(uninit) noexcept; friend impl; friend void sliceInit(void *, const void *, std::size_t) noexcept; friend void *slicePtr(const void *) noexcept; friend std::size_t sliceLen(const void *) noexcept; std::array repr; }; template class Slice::iterator final { public: using iterator_category = std::random_access_iterator_tag; using value_type = T; using difference_type = std::ptrdiff_t; using pointer = typename std::add_pointer::type; using reference = typename std::add_lvalue_reference::type; reference operator*() const noexcept; pointer operator->() const noexcept; reference operator[](difference_type) const noexcept; iterator &operator++() noexcept; iterator operator++(int) noexcept; iterator &operator--() noexcept; iterator operator--(int) noexcept; iterator &operator+=(difference_type) noexcept; iterator &operator-=(difference_type) noexcept; iterator operator+(difference_type) const noexcept; iterator operator-(difference_type) const noexcept; difference_type operator-(const iterator &) const noexcept; bool operator==(const iterator &) const noexcept; bool operator!=(const iterator &) const noexcept; bool operator<(const iterator &) const noexcept; bool operator<=(const iterator &) const noexcept; bool operator>(const iterator &) const noexcept; bool operator>=(const iterator &) const noexcept; private: friend class Slice; void *pos; std::size_t stride; }; #endif // CXXBRIDGE1_RUST_SLICE #ifndef CXXBRIDGE1_RUST_BOX // https://cxx.rs/binding/box.html template class Box final { public: using element_type = T; using const_pointer = typename std::add_pointer::type>::type; using pointer = typename std::add_pointer::type; Box() = delete; Box(Box &&) noexcept; ~Box() noexcept; explicit Box(const T &); explicit Box(T &&); Box &operator=(Box &&) &noexcept; const T *operator->() const noexcept; const T &operator*() const noexcept; T *operator->() noexcept; T &operator*() noexcept; template static Box in_place(Fields &&...); void swap(Box &) noexcept; // Important: requires that `raw` came from an into_raw call. Do not pass a // pointer from `new` or any other source. static Box from_raw(T *) noexcept; T *into_raw() noexcept; /* Deprecated */ using value_type = element_type; private: class uninit; class allocation; Box(uninit) noexcept; void drop() noexcept; friend void swap(Box &lhs, Box &rhs) noexcept { lhs.swap(rhs); } T *ptr; }; #endif // CXXBRIDGE1_RUST_BOX #ifndef CXXBRIDGE1_RUST_VEC // https://cxx.rs/binding/vec.html template class Vec final { public: using value_type = T; Vec() noexcept; Vec(std::initializer_list); Vec(const Vec &); Vec(Vec &&) noexcept; ~Vec() noexcept; Vec &operator=(Vec &&) &noexcept; Vec &operator=(const Vec &) &; std::size_t size() const noexcept; bool empty() const noexcept; const T *data() const noexcept; T *data() noexcept; std::size_t capacity() const noexcept; const T &operator[](std::size_t n) const noexcept; const T &at(std::size_t n) const; const T &front() const noexcept; const T &back() const noexcept; T &operator[](std::size_t n) noexcept; T &at(std::size_t n); T &front() noexcept; T &back() noexcept; void reserve(std::size_t new_cap); void push_back(const T &value); void push_back(T &&value); template void emplace_back(Args &&...args); void truncate(std::size_t len); void clear(); using iterator = typename Slice::iterator; iterator begin() noexcept; iterator end() noexcept; using const_iterator = typename Slice::iterator; const_iterator begin() const noexcept; const_iterator end() const noexcept; const_iterator cbegin() const noexcept; const_iterator cend() const noexcept; void swap(Vec &) noexcept; // Internal API only intended for the cxxbridge code generator. Vec(unsafe_bitcopy_t, const Vec &) noexcept; private: void reserve_total(std::size_t new_cap) noexcept; void set_len(std::size_t len) noexcept; void drop() noexcept; friend void swap(Vec &lhs, Vec &rhs) noexcept { lhs.swap(rhs); } // Size and alignment statically verified by rust_vec.rs. std::array repr; }; #endif // CXXBRIDGE1_RUST_VEC #ifndef CXXBRIDGE1_RUST_FN // https://cxx.rs/binding/fn.html template class Fn; template class Fn final { public: Ret operator()(Args... args) const noexcept; Fn operator*() const noexcept; private: Ret (*trampoline)(Args..., void *fn) noexcept; void *fn; }; #endif // CXXBRIDGE1_RUST_FN #ifndef CXXBRIDGE1_RUST_ERROR #define CXXBRIDGE1_RUST_ERROR // https://cxx.rs/binding/result.html class Error final : public std::exception { public: Error(const Error &); Error(Error &&) noexcept; ~Error() noexcept override; Error &operator=(const Error &) &; Error &operator=(Error &&) &noexcept; const char *what() const noexcept override; private: Error() noexcept = default; friend impl; const char *msg; std::size_t len; }; #endif // CXXBRIDGE1_RUST_ERROR #ifndef CXXBRIDGE1_RUST_ISIZE #define CXXBRIDGE1_RUST_ISIZE #if defined(_WIN32) using isize = SSIZE_T; #else using isize = ssize_t; #endif #endif // CXXBRIDGE1_RUST_ISIZE std::ostream &operator<<(std::ostream &, const String &); std::ostream &operator<<(std::ostream &, const Str &); #ifndef CXXBRIDGE1_RUST_OPAQUE #define CXXBRIDGE1_RUST_OPAQUE // Base class of generated opaque Rust types. class Opaque { public: Opaque() = delete; Opaque(const Opaque &) = delete; ~Opaque() = delete; }; #endif // CXXBRIDGE1_RUST_OPAQUE template std::size_t size_of(); template std::size_t align_of(); // IsRelocatable is used in assertions that a C++ type passed by value // between Rust and C++ is soundly relocatable by Rust. // // There may be legitimate reasons to opt out of the check for support of types // that the programmer knows are soundly Rust-movable despite not being // recognized as such by the C++ type system due to a move constructor or // destructor. To opt out of the relocatability check, do either of the // following things in any header used by `include!` in the bridge. // // --- if you define the type: // struct MyType { // ... // + using IsRelocatable = std::true_type; // }; // // --- otherwise: // + template <> // + struct rust::IsRelocatable : std::true_type {}; template struct IsRelocatable; using u8 = std::uint8_t; using u16 = std::uint16_t; using u32 = std::uint32_t; using u64 = std::uint64_t; using usize = std::size_t; // see static asserts in cxx.cc using i8 = std::int8_t; using i16 = std::int16_t; using i32 = std::int32_t; using i64 = std::int64_t; using f32 = float; using f64 = double; // Snake case aliases for use in code that uses this style for type names. using string = String; using str = Str; template using slice = Slice; template using box = Box; template using vec = Vec; using error = Error; template using fn = Fn; template using is_relocatable = IsRelocatable; //////////////////////////////////////////////////////////////////////////////// /// end public API, begin implementation details #ifndef CXXBRIDGE1_PANIC #define CXXBRIDGE1_PANIC template void panic [[noreturn]] (const char *msg); #endif // CXXBRIDGE1_PANIC #ifndef CXXBRIDGE1_RUST_FN #define CXXBRIDGE1_RUST_FN template Ret Fn::operator()(Args... args) const noexcept { return (*this->trampoline)(std::forward(args)..., this->fn); } template Fn Fn::operator*() const noexcept { return *this; } #endif // CXXBRIDGE1_RUST_FN #ifndef CXXBRIDGE1_RUST_BITCOPY_T #define CXXBRIDGE1_RUST_BITCOPY_T struct unsafe_bitcopy_t final { explicit unsafe_bitcopy_t() = default; }; #endif // CXXBRIDGE1_RUST_BITCOPY_T #ifndef CXXBRIDGE1_RUST_BITCOPY #define CXXBRIDGE1_RUST_BITCOPY constexpr unsafe_bitcopy_t unsafe_bitcopy{}; #endif // CXXBRIDGE1_RUST_BITCOPY #ifndef CXXBRIDGE1_RUST_SLICE #define CXXBRIDGE1_RUST_SLICE template Slice::Slice() noexcept { sliceInit(this, reinterpret_cast(align_of()), 0); } template Slice::Slice(T *s, std::size_t count) noexcept { assert(s != nullptr || count == 0); sliceInit(this, s == nullptr && count == 0 ? reinterpret_cast(align_of()) : const_cast::type *>(s), count); } template T *Slice::data() const noexcept { return reinterpret_cast(slicePtr(this)); } template std::size_t Slice::size() const noexcept { return sliceLen(this); } template std::size_t Slice::length() const noexcept { return this->size(); } template bool Slice::empty() const noexcept { return this->size() == 0; } template T &Slice::operator[](std::size_t n) const noexcept { assert(n < this->size()); auto ptr = static_cast(slicePtr(this)) + size_of() * n; return *reinterpret_cast(ptr); } template T &Slice::at(std::size_t n) const { if (n >= this->size()) { panic("rust::Slice index out of range"); } return (*this)[n]; } template T &Slice::front() const noexcept { assert(!this->empty()); return (*this)[0]; } template T &Slice::back() const noexcept { assert(!this->empty()); return (*this)[this->size() - 1]; } template typename Slice::iterator::reference Slice::iterator::operator*() const noexcept { return *static_cast(this->pos); } template typename Slice::iterator::pointer Slice::iterator::operator->() const noexcept { return static_cast(this->pos); } template typename Slice::iterator::reference Slice::iterator::operator[]( typename Slice::iterator::difference_type n) const noexcept { auto ptr = static_cast(this->pos) + this->stride * n; return *reinterpret_cast(ptr); } template typename Slice::iterator &Slice::iterator::operator++() noexcept { this->pos = static_cast(this->pos) + this->stride; return *this; } template typename Slice::iterator Slice::iterator::operator++(int) noexcept { auto ret = iterator(*this); this->pos = static_cast(this->pos) + this->stride; return ret; } template typename Slice::iterator &Slice::iterator::operator--() noexcept { this->pos = static_cast(this->pos) - this->stride; return *this; } template typename Slice::iterator Slice::iterator::operator--(int) noexcept { auto ret = iterator(*this); this->pos = static_cast(this->pos) - this->stride; return ret; } template typename Slice::iterator &Slice::iterator::operator+=( typename Slice::iterator::difference_type n) noexcept { this->pos = static_cast(this->pos) + this->stride * n; return *this; } template typename Slice::iterator &Slice::iterator::operator-=( typename Slice::iterator::difference_type n) noexcept { this->pos = static_cast(this->pos) - this->stride * n; return *this; } template typename Slice::iterator Slice::iterator::operator+( typename Slice::iterator::difference_type n) const noexcept { auto ret = iterator(*this); ret.pos = static_cast(this->pos) + this->stride * n; return ret; } template typename Slice::iterator Slice::iterator::operator-( typename Slice::iterator::difference_type n) const noexcept { auto ret = iterator(*this); ret.pos = static_cast(this->pos) - this->stride * n; return ret; } template typename Slice::iterator::difference_type Slice::iterator::operator-(const iterator &other) const noexcept { auto diff = std::distance(static_cast(other.pos), static_cast(this->pos)); return diff / static_cast::iterator::difference_type>( this->stride); } template bool Slice::iterator::operator==(const iterator &other) const noexcept { return this->pos == other.pos; } template bool Slice::iterator::operator!=(const iterator &other) const noexcept { return this->pos != other.pos; } template bool Slice::iterator::operator<(const iterator &other) const noexcept { return this->pos < other.pos; } template bool Slice::iterator::operator<=(const iterator &other) const noexcept { return this->pos <= other.pos; } template bool Slice::iterator::operator>(const iterator &other) const noexcept { return this->pos > other.pos; } template bool Slice::iterator::operator>=(const iterator &other) const noexcept { return this->pos >= other.pos; } template typename Slice::iterator Slice::begin() const noexcept { iterator it; it.pos = slicePtr(this); it.stride = size_of(); return it; } template typename Slice::iterator Slice::end() const noexcept { iterator it = this->begin(); it.pos = static_cast(it.pos) + it.stride * this->size(); return it; } template void Slice::swap(Slice &rhs) noexcept { std::swap(*this, rhs); } #endif // CXXBRIDGE1_RUST_SLICE #ifndef CXXBRIDGE1_RUST_BOX #define CXXBRIDGE1_RUST_BOX template class Box::uninit {}; template class Box::allocation { static T *alloc() noexcept; static void dealloc(T *) noexcept; public: allocation() noexcept : ptr(alloc()) {} ~allocation() noexcept { if (this->ptr) { dealloc(this->ptr); } } T *ptr; }; template Box::Box(Box &&other) noexcept : ptr(other.ptr) { other.ptr = nullptr; } template Box::Box(const T &val) { allocation alloc; ::new (alloc.ptr) T(val); this->ptr = alloc.ptr; alloc.ptr = nullptr; } template Box::Box(T &&val) { allocation alloc; ::new (alloc.ptr) T(std::move(val)); this->ptr = alloc.ptr; alloc.ptr = nullptr; } template Box::~Box() noexcept { if (this->ptr) { this->drop(); } } template Box &Box::operator=(Box &&other) &noexcept { if (this->ptr) { this->drop(); } this->ptr = other.ptr; other.ptr = nullptr; return *this; } template const T *Box::operator->() const noexcept { return this->ptr; } template const T &Box::operator*() const noexcept { return *this->ptr; } template T *Box::operator->() noexcept { return this->ptr; } template T &Box::operator*() noexcept { return *this->ptr; } template template Box Box::in_place(Fields &&...fields) { allocation alloc; auto ptr = alloc.ptr; ::new (ptr) T{std::forward(fields)...}; alloc.ptr = nullptr; return from_raw(ptr); } template void Box::swap(Box &rhs) noexcept { using std::swap; swap(this->ptr, rhs.ptr); } template Box Box::from_raw(T *raw) noexcept { Box box = uninit{}; box.ptr = raw; return box; } template T *Box::into_raw() noexcept { T *raw = this->ptr; this->ptr = nullptr; return raw; } template Box::Box(uninit) noexcept {} #endif // CXXBRIDGE1_RUST_BOX #ifndef CXXBRIDGE1_RUST_VEC #define CXXBRIDGE1_RUST_VEC template Vec::Vec(std::initializer_list init) : Vec{} { this->reserve_total(init.size()); std::move(init.begin(), init.end(), std::back_inserter(*this)); } template Vec::Vec(const Vec &other) : Vec() { this->reserve_total(other.size()); std::copy(other.begin(), other.end(), std::back_inserter(*this)); } template Vec::Vec(Vec &&other) noexcept : repr(other.repr) { new (&other) Vec(); } template Vec::~Vec() noexcept { this->drop(); } template Vec &Vec::operator=(Vec &&other) &noexcept { this->drop(); this->repr = other.repr; new (&other) Vec(); return *this; } template Vec &Vec::operator=(const Vec &other) & { if (this != &other) { this->drop(); new (this) Vec(other); } return *this; } template bool Vec::empty() const noexcept { return this->size() == 0; } template T *Vec::data() noexcept { return const_cast(const_cast *>(this)->data()); } template const T &Vec::operator[](std::size_t n) const noexcept { assert(n < this->size()); auto data = reinterpret_cast(this->data()); return *reinterpret_cast(data + n * size_of()); } template const T &Vec::at(std::size_t n) const { if (n >= this->size()) { panic("rust::Vec index out of range"); } return (*this)[n]; } template const T &Vec::front() const noexcept { assert(!this->empty()); return (*this)[0]; } template const T &Vec::back() const noexcept { assert(!this->empty()); return (*this)[this->size() - 1]; } template T &Vec::operator[](std::size_t n) noexcept { assert(n < this->size()); auto data = reinterpret_cast(this->data()); return *reinterpret_cast(data + n * size_of()); } template T &Vec::at(std::size_t n) { if (n >= this->size()) { panic("rust::Vec index out of range"); } return (*this)[n]; } template T &Vec::front() noexcept { assert(!this->empty()); return (*this)[0]; } template T &Vec::back() noexcept { assert(!this->empty()); return (*this)[this->size() - 1]; } template void Vec::reserve(std::size_t new_cap) { this->reserve_total(new_cap); } template void Vec::push_back(const T &value) { this->emplace_back(value); } template void Vec::push_back(T &&value) { this->emplace_back(std::move(value)); } template template void Vec::emplace_back(Args &&...args) { auto size = this->size(); this->reserve_total(size + 1); ::new (reinterpret_cast(reinterpret_cast(this->data()) + size * size_of())) T(std::forward(args)...); this->set_len(size + 1); } template void Vec::clear() { this->truncate(0); } template typename Vec::iterator Vec::begin() noexcept { return Slice(this->data(), this->size()).begin(); } template typename Vec::iterator Vec::end() noexcept { return Slice(this->data(), this->size()).end(); } template typename Vec::const_iterator Vec::begin() const noexcept { return this->cbegin(); } template typename Vec::const_iterator Vec::end() const noexcept { return this->cend(); } template typename Vec::const_iterator Vec::cbegin() const noexcept { return Slice(this->data(), this->size()).begin(); } template typename Vec::const_iterator Vec::cend() const noexcept { return Slice(this->data(), this->size()).end(); } template void Vec::swap(Vec &rhs) noexcept { using std::swap; swap(this->repr, rhs.repr); } // Internal API only intended for the cxxbridge code generator. template Vec::Vec(unsafe_bitcopy_t, const Vec &bits) noexcept : repr(bits.repr) {} #endif // CXXBRIDGE1_RUST_VEC #ifndef CXXBRIDGE1_IS_COMPLETE #define CXXBRIDGE1_IS_COMPLETE namespace detail { namespace { template struct is_complete : std::false_type {}; template struct is_complete : std::true_type {}; } // namespace } // namespace detail #endif // CXXBRIDGE1_IS_COMPLETE #ifndef CXXBRIDGE1_LAYOUT #define CXXBRIDGE1_LAYOUT class layout { template friend std::size_t size_of(); template friend std::size_t align_of(); template static typename std::enable_if::value, std::size_t>::type do_size_of() { return T::layout::size(); } template static typename std::enable_if::value, std::size_t>::type do_size_of() { return sizeof(T); } template static typename std::enable_if::value, std::size_t>::type size_of() { return do_size_of(); } template static typename std::enable_if::value, std::size_t>::type do_align_of() { return T::layout::align(); } template static typename std::enable_if::value, std::size_t>::type do_align_of() { return alignof(T); } template static typename std::enable_if::value, std::size_t>::type align_of() { return do_align_of(); } }; template std::size_t size_of() { return layout::size_of(); } template std::size_t align_of() { return layout::align_of(); } #endif // CXXBRIDGE1_LAYOUT #ifndef CXXBRIDGE1_RELOCATABLE #define CXXBRIDGE1_RELOCATABLE namespace detail { template struct make_void { using type = void; }; template using void_t = typename make_void::type; template class, typename...> struct detect : std::false_type {}; template