1 use std::collections::HashMap;
2 use std::collections::HashSet;
3 use std::path::PathBuf;
4 use std::process::Command;
6 use build_helper::output;
7 use serde::Deserialize;
9 use crate::cache::INTERNER;
10 use crate::{Build, Crate};
12 #[derive(Deserialize)]
14 packages: Vec<Package>,
18 #[derive(Deserialize)]
22 source: Option<String>,
23 manifest_path: String,
26 #[derive(Deserialize)]
28 nodes: Vec<ResolveNode>,
31 #[derive(Deserialize)]
34 dependencies: Vec<String>,
37 pub fn build(build: &mut Build) {
38 let mut resolves = Vec::new();
39 build_krate(&build.std_features(), build, &mut resolves, "src/libstd");
40 build_krate("", build, &mut resolves, "src/libtest");
41 build_krate(&build.rustc_features(), build, &mut resolves, "src/rustc");
43 let mut id2name = HashMap::with_capacity(build.crates.len());
44 for (name, krate) in build.crates.iter() {
45 id2name.insert(krate.id.clone(), name.clone());
48 for node in resolves {
49 let name = match id2name.get(&node.id) {
54 let krate = build.crates.get_mut(name).unwrap();
55 for dep in node.dependencies.iter() {
56 let dep = match id2name.get(dep) {
60 krate.deps.insert(*dep);
65 fn build_krate(features: &str, build: &mut Build, resolves: &mut Vec<ResolveNode>, krate: &str) {
66 // Run `cargo metadata` to figure out what crates we're testing.
68 // Down below we're going to call `cargo test`, but to test the right set
69 // of packages we're going to have to know what `-p` arguments to pass it
70 // to know what crates to test. Here we run `cargo metadata` to learn about
71 // the dependency graph and what `-p` arguments there are.
72 let mut cargo = Command::new(&build.initial_cargo);
75 .arg("--format-version")
79 .arg("--manifest-path")
80 .arg(build.src.join(krate).join("Cargo.toml"));
81 let output = output(&mut cargo);
82 let output: Output = serde_json::from_str(&output).unwrap();
83 for package in output.packages {
84 if package.source.is_none() {
85 let name = INTERNER.intern_string(package.name);
86 let mut path = PathBuf::from(package.manifest_path);
88 build.crates.insert(name, Crate { name, id: package.id, deps: HashSet::new(), path });
91 resolves.extend(output.resolve.nodes);