cade32acf6
for `Box<FnBox()>`. I found the alias was still handy because it is shorter than the fully written type. This is a [breaking-change]: convert code using `Invoke` to use `FnBox`, which is usually pretty straight-forward. Code using thunk mostly works if you change `Thunk::new => Box::new` and `foo.invoke(arg)` to `foo(arg)`.
422 lines
15 KiB
Rust
422 lines
15 KiB
Rust
// Copyright 2013-2014 The Rust Project Developers. See the COPYRIGHT
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// file at the top-level directory of this distribution and at
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// http://rust-lang.org/COPYRIGHT.
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//
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// Licensed under the Apache License, Version 2.0 <LICENSE-APACHE or
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// http://www.apache.org/licenses/LICENSE-2.0> or the MIT license
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// <LICENSE-MIT or http://opensource.org/licenses/MIT>, at your
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// option. This file may not be copied, modified, or distributed
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// except according to those terms.
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use std::cell::RefCell;
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use std::collections::{HashSet, HashMap};
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use std::dynamic_lib::DynamicLibrary;
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use std::env;
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use std::ffi::OsString;
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use std::io::prelude::*;
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use std::io;
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use std::path::PathBuf;
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use std::process::Command;
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use std::str;
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use std::sync::{Arc, Mutex};
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use testing;
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use rustc_lint;
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use rustc::session::{self, config};
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use rustc::session::config::get_unstable_features_setting;
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use rustc::session::search_paths::{SearchPaths, PathKind};
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use rustc_back::tempdir::TempDir;
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use rustc_driver::{driver, Compilation};
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use syntax::codemap::CodeMap;
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use syntax::diagnostic;
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use core;
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use clean;
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use clean::Clean;
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use fold::DocFolder;
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use html::markdown;
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use passes;
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use visit_ast::RustdocVisitor;
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pub fn run(input: &str,
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cfgs: Vec<String>,
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libs: SearchPaths,
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externs: core::Externs,
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mut test_args: Vec<String>,
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crate_name: Option<String>)
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-> isize {
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let input_path = PathBuf::from(input);
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let input = config::Input::File(input_path.clone());
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let sessopts = config::Options {
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maybe_sysroot: Some(env::current_exe().unwrap().parent().unwrap()
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.parent().unwrap().to_path_buf()),
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search_paths: libs.clone(),
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crate_types: vec!(config::CrateTypeDylib),
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externs: externs.clone(),
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unstable_features: get_unstable_features_setting(),
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..config::basic_options().clone()
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};
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let codemap = CodeMap::new();
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let diagnostic_handler = diagnostic::default_handler(diagnostic::Auto, None, true);
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let span_diagnostic_handler =
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diagnostic::mk_span_handler(diagnostic_handler, codemap);
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let sess = session::build_session_(sessopts,
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Some(input_path.clone()),
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span_diagnostic_handler);
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rustc_lint::register_builtins(&mut sess.lint_store.borrow_mut(), Some(&sess));
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let mut cfg = config::build_configuration(&sess);
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cfg.extend(config::parse_cfgspecs(cfgs).into_iter());
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let krate = driver::phase_1_parse_input(&sess, cfg, &input);
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let krate = driver::phase_2_configure_and_expand(&sess, krate,
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"rustdoc-test", None)
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.expect("phase_2_configure_and_expand aborted in rustdoc!");
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let inject_crate = should_inject_crate(&krate);
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let ctx = core::DocContext {
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krate: &krate,
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maybe_typed: core::NotTyped(sess),
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input: input,
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external_paths: RefCell::new(Some(HashMap::new())),
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external_traits: RefCell::new(None),
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external_typarams: RefCell::new(None),
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inlined: RefCell::new(None),
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populated_crate_impls: RefCell::new(HashSet::new()),
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};
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let mut v = RustdocVisitor::new(&ctx, None);
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v.visit(ctx.krate);
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let mut krate = v.clean(&ctx);
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match crate_name {
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Some(name) => krate.name = name,
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None => {}
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}
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let (krate, _) = passes::collapse_docs(krate);
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let (krate, _) = passes::unindent_comments(krate);
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let mut collector = Collector::new(krate.name.to_string(),
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libs,
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externs,
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false,
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inject_crate);
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collector.fold_crate(krate);
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test_args.insert(0, "rustdoctest".to_string());
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testing::test_main(&test_args,
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collector.tests.into_iter().collect());
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0
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}
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// Look for #![doc(test(no_crate_inject))], used by crates in the std facade
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fn should_inject_crate(krate: &::syntax::ast::Crate) -> bool {
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use syntax::attr::AttrMetaMethods;
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let mut inject_crate = true;
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for attr in &krate.attrs {
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if attr.check_name("doc") {
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for list in attr.meta_item_list().into_iter() {
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for attr in list {
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if attr.check_name("test") {
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for list in attr.meta_item_list().into_iter() {
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for attr in list {
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if attr.check_name("no_crate_inject") {
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inject_crate = false;
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}
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}
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}
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}
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}
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}
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}
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}
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return inject_crate;
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}
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#[allow(deprecated)]
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fn runtest(test: &str, cratename: &str, libs: SearchPaths,
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externs: core::Externs,
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should_panic: bool, no_run: bool, as_test_harness: bool,
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inject_crate: bool) {
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// the test harness wants its own `main` & top level functions, so
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// never wrap the test in `fn main() { ... }`
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let test = maketest(test, Some(cratename), true, as_test_harness,
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inject_crate);
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let input = config::Input::Str(test.to_string());
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let sessopts = config::Options {
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maybe_sysroot: Some(env::current_exe().unwrap().parent().unwrap()
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.parent().unwrap().to_path_buf()),
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search_paths: libs,
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crate_types: vec!(config::CrateTypeExecutable),
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output_types: vec!(config::OutputTypeExe),
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externs: externs,
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cg: config::CodegenOptions {
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prefer_dynamic: true,
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.. config::basic_codegen_options()
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},
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test: as_test_harness,
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unstable_features: get_unstable_features_setting(),
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..config::basic_options().clone()
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};
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// Shuffle around a few input and output handles here. We're going to pass
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// an explicit handle into rustc to collect output messages, but we also
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// want to catch the error message that rustc prints when it fails.
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//
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// We take our task-local stderr (likely set by the test runner) and replace
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// it with a sink that is also passed to rustc itself. When this function
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// returns the output of the sink is copied onto the output of our own task.
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//
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// The basic idea is to not use a default_handler() for rustc, and then also
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// not print things by default to the actual stderr.
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struct Sink(Arc<Mutex<Vec<u8>>>);
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impl Write for Sink {
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fn write(&mut self, data: &[u8]) -> io::Result<usize> {
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Write::write(&mut *self.0.lock().unwrap(), data)
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}
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fn flush(&mut self) -> io::Result<()> { Ok(()) }
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}
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struct Bomb(Arc<Mutex<Vec<u8>>>, Box<Write+Send>);
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impl Drop for Bomb {
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fn drop(&mut self) {
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let _ = self.1.write_all(&self.0.lock().unwrap());
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}
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}
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let data = Arc::new(Mutex::new(Vec::new()));
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let emitter = diagnostic::EmitterWriter::new(box Sink(data.clone()), None);
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let old = io::set_panic(box Sink(data.clone()));
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let _bomb = Bomb(data, old.unwrap_or(box io::stdout()));
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// Compile the code
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let codemap = CodeMap::new();
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let diagnostic_handler = diagnostic::mk_handler(true, box emitter);
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let span_diagnostic_handler =
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diagnostic::mk_span_handler(diagnostic_handler, codemap);
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let sess = session::build_session_(sessopts,
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None,
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span_diagnostic_handler);
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rustc_lint::register_builtins(&mut sess.lint_store.borrow_mut(), Some(&sess));
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let outdir = TempDir::new("rustdoctest").ok().expect("rustdoc needs a tempdir");
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let out = Some(outdir.path().to_path_buf());
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let cfg = config::build_configuration(&sess);
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let libdir = sess.target_filesearch(PathKind::All).get_lib_path();
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let mut control = driver::CompileController::basic();
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if no_run {
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control.after_analysis.stop = Compilation::Stop;
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}
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driver::compile_input(sess, cfg, &input, &out, &None, None, control);
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if no_run { return }
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// Run the code!
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//
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// We're careful to prepend the *target* dylib search path to the child's
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// environment to ensure that the target loads the right libraries at
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// runtime. It would be a sad day if the *host* libraries were loaded as a
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// mistake.
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let mut cmd = Command::new(&outdir.path().join("rust_out"));
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let var = DynamicLibrary::envvar();
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let newpath = {
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let path = env::var_os(var).unwrap_or(OsString::new());
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let mut path = env::split_paths(&path).collect::<Vec<_>>();
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path.insert(0, libdir.clone());
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env::join_paths(path.iter()).unwrap()
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};
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cmd.env(var, &newpath);
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match cmd.output() {
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Err(e) => panic!("couldn't run the test: {}{}", e,
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if e.kind() == io::ErrorKind::PermissionDenied {
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" - maybe your tempdir is mounted with noexec?"
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} else { "" }),
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Ok(out) => {
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if should_panic && out.status.success() {
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panic!("test executable succeeded when it should have failed");
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} else if !should_panic && !out.status.success() {
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panic!("test executable failed:\n{}\n{}",
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str::from_utf8(&out.stdout).unwrap_or(""),
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str::from_utf8(&out.stderr).unwrap_or(""));
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}
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}
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}
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}
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pub fn maketest(s: &str, cratename: Option<&str>, lints: bool,
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dont_insert_main: bool, inject_crate: bool) -> String {
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let (crate_attrs, everything_else) = partition_source(s);
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let mut prog = String::new();
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// First push any outer attributes from the example, assuming they
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// are intended to be crate attributes.
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prog.push_str(&crate_attrs);
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if lints {
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prog.push_str(r"
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#![allow(unused_variables, unused_assignments, unused_mut, unused_attributes, dead_code)]
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");
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}
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// Don't inject `extern crate std` because it's already injected by the
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// compiler.
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if !s.contains("extern crate") && inject_crate {
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match cratename {
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Some(cratename) => {
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if s.contains(cratename) {
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prog.push_str(&format!("extern crate {};\n",
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cratename));
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}
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}
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None => {}
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}
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}
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if dont_insert_main || s.contains("fn main") {
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prog.push_str(&everything_else);
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} else {
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prog.push_str("fn main() {\n ");
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prog.push_str(&everything_else.replace("\n", "\n "));
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prog.push_str("\n}");
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}
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info!("final test program: {}", prog);
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return prog
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}
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fn partition_source(s: &str) -> (String, String) {
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use unicode::str::UnicodeStr;
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let mut after_header = false;
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let mut before = String::new();
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let mut after = String::new();
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for line in s.lines() {
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let trimline = line.trim();
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let header = trimline.is_whitespace() ||
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trimline.starts_with("#![feature");
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if !header || after_header {
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after_header = true;
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after.push_str(line);
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after.push_str("\n");
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} else {
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before.push_str(line);
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before.push_str("\n");
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}
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}
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return (before, after);
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}
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pub struct Collector {
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pub tests: Vec<testing::TestDescAndFn>,
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names: Vec<String>,
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libs: SearchPaths,
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externs: core::Externs,
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cnt: usize,
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use_headers: bool,
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current_header: Option<String>,
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cratename: String,
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inject_crate: bool
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}
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impl Collector {
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pub fn new(cratename: String, libs: SearchPaths, externs: core::Externs,
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use_headers: bool, inject_crate: bool) -> Collector {
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Collector {
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tests: Vec::new(),
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names: Vec::new(),
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libs: libs,
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externs: externs,
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cnt: 0,
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use_headers: use_headers,
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current_header: None,
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cratename: cratename,
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inject_crate: inject_crate
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}
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}
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pub fn add_test(&mut self, test: String,
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should_panic: bool, no_run: bool, should_ignore: bool,
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as_test_harness: bool) {
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let name = if self.use_headers {
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let s = self.current_header.as_ref().map(|s| &**s).unwrap_or("");
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format!("{}_{}", s, self.cnt)
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} else {
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format!("{}_{}", self.names.connect("::"), self.cnt)
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};
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self.cnt += 1;
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let libs = self.libs.clone();
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let externs = self.externs.clone();
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let cratename = self.cratename.to_string();
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let inject_crate = self.inject_crate;
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debug!("Creating test {}: {}", name, test);
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self.tests.push(testing::TestDescAndFn {
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desc: testing::TestDesc {
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name: testing::DynTestName(name),
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ignore: should_ignore,
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should_panic: testing::ShouldPanic::No, // compiler failures are test failures
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},
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testfn: testing::DynTestFn(Box::new(move|| {
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runtest(&test,
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&cratename,
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libs,
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externs,
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should_panic,
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no_run,
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as_test_harness,
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inject_crate);
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}))
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});
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}
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pub fn register_header(&mut self, name: &str, level: u32) {
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if self.use_headers && level == 1 {
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// we use these headings as test names, so it's good if
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// they're valid identifiers.
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let name = name.chars().enumerate().map(|(i, c)| {
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if (i == 0 && c.is_xid_start()) ||
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(i != 0 && c.is_xid_continue()) {
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c
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} else {
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'_'
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}
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}).collect::<String>();
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// new header => reset count.
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self.cnt = 0;
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self.current_header = Some(name);
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}
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}
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}
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impl DocFolder for Collector {
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fn fold_item(&mut self, item: clean::Item) -> Option<clean::Item> {
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let pushed = match item.name {
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Some(ref name) if name.len() == 0 => false,
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Some(ref name) => { self.names.push(name.to_string()); true }
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None => false
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};
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match item.doc_value() {
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Some(doc) => {
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self.cnt = 0;
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markdown::find_testable_code(doc, &mut *self);
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}
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None => {}
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}
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let ret = self.fold_item_recur(item);
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if pushed {
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self.names.pop();
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}
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return ret;
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}
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}
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