94 lines
2.7 KiB
Rust
94 lines
2.7 KiB
Rust
use std::collections::HashMap;
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use std::collections::HashSet;
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use std::path::PathBuf;
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use std::process::Command;
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use build_helper::output;
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use serde::Deserialize;
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use serde_json;
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use crate::cache::INTERNER;
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use crate::{Build, Crate};
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#[derive(Deserialize)]
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struct Output {
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packages: Vec<Package>,
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resolve: Resolve,
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}
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#[derive(Deserialize)]
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struct Package {
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id: String,
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name: String,
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source: Option<String>,
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manifest_path: String,
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}
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#[derive(Deserialize)]
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struct Resolve {
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nodes: Vec<ResolveNode>,
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}
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#[derive(Deserialize)]
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struct ResolveNode {
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id: String,
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dependencies: Vec<String>,
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}
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pub fn build(build: &mut Build) {
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let mut resolves = Vec::new();
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build_krate(&build.std_features(), build, &mut resolves, "src/libstd");
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build_krate("", build, &mut resolves, "src/libtest");
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build_krate(&build.rustc_features(), build, &mut resolves, "src/rustc");
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let mut id2name = HashMap::with_capacity(build.crates.len());
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for (name, krate) in build.crates.iter() {
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id2name.insert(krate.id.clone(), name.clone());
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}
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for node in resolves {
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let name = match id2name.get(&node.id) {
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Some(name) => name,
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None => continue,
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};
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let krate = build.crates.get_mut(name).unwrap();
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for dep in node.dependencies.iter() {
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let dep = match id2name.get(dep) {
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Some(dep) => dep,
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None => continue,
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};
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krate.deps.insert(*dep);
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}
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}
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}
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fn build_krate(features: &str, build: &mut Build, resolves: &mut Vec<ResolveNode>, krate: &str) {
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// Run `cargo metadata` to figure out what crates we're testing.
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//
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// Down below we're going to call `cargo test`, but to test the right set
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// of packages we're going to have to know what `-p` arguments to pass it
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// to know what crates to test. Here we run `cargo metadata` to learn about
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// the dependency graph and what `-p` arguments there are.
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let mut cargo = Command::new(&build.initial_cargo);
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cargo
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.arg("metadata")
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.arg("--format-version")
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.arg("1")
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.arg("--features")
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.arg(features)
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.arg("--manifest-path")
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.arg(build.src.join(krate).join("Cargo.toml"));
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let output = output(&mut cargo);
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let output: Output = serde_json::from_str(&output).unwrap();
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for package in output.packages {
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if package.source.is_none() {
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let name = INTERNER.intern_string(package.name);
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let mut path = PathBuf::from(package.manifest_path);
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path.pop();
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build.crates.insert(name, Crate { name, id: package.id, deps: HashSet::new(), path });
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}
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}
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resolves.extend(output.resolve.nodes);
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}
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