Refactor and reduce usage of RelPath

Author: bjorn3

build_system/bench.rs

@@ -3,7 +3,7 @@ use std::io::Write;
 use std::path::Path;
 use std::process::Command;
 
-use crate::path::{Dirs, RelPath};
+use crate::path::Dirs;
 use crate::prepare::GitRepo;
 use crate::rustc_info::get_file_name;
 use crate::utils::{Compiler, spawn_and_wait};
@@ -39,11 +39,11 @@ fn benchmark_simple_raytracer(dirs: &Dirs, bootstrap_host_compiler: &Compiler) {
     };
 
     eprintln!("[BENCH COMPILE] ebobby/simple-raytracer");
-    let cargo_clif = RelPath::DIST
-        .to_path(dirs)
+    let cargo_clif = dirs
+        .dist_dir
         .join(get_file_name(&bootstrap_host_compiler.rustc, "cargo_clif", "bin").replace('_', "-"));
     let manifest_path = SIMPLE_RAYTRACER_REPO.source_dir().to_path(dirs).join("Cargo.toml");
-    let target_dir = RelPath::BUILD.join("simple_raytracer").to_path(dirs);
+    let target_dir = dirs.build_dir.join("simple_raytracer");
 
     let clean_cmd = format!(
         "RUSTC=rustc cargo clean --manifest-path {manifest_path} --target-dir {target_dir}",
@@ -68,7 +68,7 @@ fn benchmark_simple_raytracer(dirs: &Dirs, bootstrap_host_compiler: &Compiler) {
         target_dir = target_dir.display(),
     );
 
-    let bench_compile_markdown = RelPath::DIST.to_path(dirs).join("bench_compile.md");
+    let bench_compile_markdown = dirs.dist_dir.join("bench_compile.md");
 
     let bench_compile = hyperfine_command(
         1,
@@ -92,7 +92,7 @@ fn benchmark_simple_raytracer(dirs: &Dirs, bootstrap_host_compiler: &Compiler) {
 
     eprintln!("[BENCH RUN] ebobby/simple-raytracer");
 
-    let bench_run_markdown = RelPath::DIST.to_path(dirs).join("bench_run.md");
+    let bench_run_markdown = dirs.dist_dir.join("bench_run.md");
 
     let raytracer_cg_llvm = Path::new(".").join(get_file_name(
         &bootstrap_host_compiler.rustc,
@@ -120,7 +120,7 @@ fn benchmark_simple_raytracer(dirs: &Dirs, bootstrap_host_compiler: &Compiler) {
         ],
         &bench_run_markdown,
     );
-    bench_run.current_dir(RelPath::BUILD.to_path(dirs));
+    bench_run.current_dir(&dirs.build_dir);
     spawn_and_wait(bench_run);
 
     if let Some(gha_step_summary) = gha_step_summary.as_mut() {

build_system/build_backend.rs

@@ -6,7 +6,7 @@ use crate::rustc_info::get_file_name;
 use crate::shared_utils::{rustflags_from_env, rustflags_to_cmd_env};
 use crate::utils::{CargoProject, Compiler, LogGroup};
 
-static CG_CLIF: CargoProject = CargoProject::new(&RelPath::SOURCE, "cg_clif");
+static CG_CLIF: CargoProject = CargoProject::new(&RelPath::source("."), "cg_clif");
 
 pub(crate) fn build_backend(
     dirs: &Dirs,

build_system/build_sysroot.rs

@@ -22,9 +22,9 @@ pub(crate) fn build_sysroot(
 
     eprintln!("[BUILD] sysroot {:?}", sysroot_kind);
 
-    let dist_dir = RelPath::DIST.to_path(dirs);
+    let dist_dir = &dirs.dist_dir;
 
-    ensure_empty_dir(&dist_dir);
+    ensure_empty_dir(dist_dir);
     fs::create_dir_all(dist_dir.join("bin")).unwrap();
     fs::create_dir_all(dist_dir.join("lib")).unwrap();
 
@@ -55,7 +55,7 @@ pub(crate) fn build_sysroot(
         let mut build_cargo_wrapper_cmd = Command::new(&bootstrap_host_compiler.rustc);
         let wrapper_path = dist_dir.join(&wrapper_name);
         build_cargo_wrapper_cmd
-            .arg(RelPath::SCRIPTS.to_path(dirs).join(&format!("{wrapper}.rs")))
+            .arg(dirs.source_dir.join("scripts").join(&format!("{wrapper}.rs")))
             .arg("-o")
             .arg(&wrapper_path)
             .arg("-Cstrip=debuginfo");
@@ -85,7 +85,7 @@ pub(crate) fn build_sysroot(
         &cg_clif_dylib_path,
         sysroot_kind,
     );
-    host.install_into_sysroot(&dist_dir);
+    host.install_into_sysroot(dist_dir);
 
     if !is_native {
         build_sysroot_for_triple(
@@ -99,7 +99,7 @@ pub(crate) fn build_sysroot(
             &cg_clif_dylib_path,
             sysroot_kind,
         )
-        .install_into_sysroot(&dist_dir);
+        .install_into_sysroot(dist_dir);
     }
 
     let mut target_compiler = {
@@ -143,10 +143,10 @@ impl SysrootTarget {
     }
 }
 
-static STDLIB_SRC: RelPath = RelPath::BUILD.join("stdlib");
+static STDLIB_SRC: RelPath = RelPath::build("stdlib");
 static STANDARD_LIBRARY: CargoProject =
-    CargoProject::new(&STDLIB_SRC.join("library/sysroot"), "stdlib_target");
-static RTSTARTUP_SYSROOT: RelPath = RelPath::BUILD.join("rtstartup");
+    CargoProject::new(&RelPath::build("stdlib/library/sysroot"), "stdlib_target");
+static RTSTARTUP_SYSROOT: RelPath = RelPath::build("rtstartup");
 
 fn build_sysroot_for_triple(
     dirs: &Dirs,

build_system/main.rs

@@ -185,12 +185,11 @@ fn main() {
         frozen,
     };
 
-    path::RelPath::BUILD.ensure_exists(&dirs);
+    std::fs::create_dir_all(&dirs.build_dir).unwrap();
 
     {
         // Make sure we always explicitly specify the target dir
-        let target =
-            path::RelPath::BUILD.join("target_dir_should_be_set_explicitly").to_path(&dirs);
+        let target = dirs.build_dir.join("target_dir_should_be_set_explicitly");
         env::set_var("CARGO_TARGET_DIR", &target);
         let _ = std::fs::remove_file(&target);
         std::fs::File::create(target).unwrap();

build_system/path.rs

@@ -1,4 +1,3 @@
-use std::fs;
 use std::path::PathBuf;
 
 #[derive(Debug, Clone)]
@@ -15,45 +14,33 @@ pub(crate) struct Dirs {
 pub(crate) enum PathBase {
     Source,
     Build,
-    Dist,
 }
 
 impl PathBase {
     fn to_path(self, dirs: &Dirs) -> PathBuf {
         match self {
             PathBase::Source => dirs.source_dir.clone(),
             PathBase::Build => dirs.build_dir.clone(),
-            PathBase::Dist => dirs.dist_dir.clone(),
         }
     }
 }
 
 #[derive(Debug, Copy, Clone)]
-pub(crate) enum RelPath {
-    Base(PathBase),
-    Join(&'static RelPath, &'static str),
+pub(crate) struct RelPath {
+    base: PathBase,
+    suffix: &'static str,
 }
 
 impl RelPath {
-    pub(crate) const SOURCE: RelPath = RelPath::Base(PathBase::Source);
-    pub(crate) const BUILD: RelPath = RelPath::Base(PathBase::Build);
-    pub(crate) const DIST: RelPath = RelPath::Base(PathBase::Dist);
-
-    pub(crate) const SCRIPTS: RelPath = RelPath::SOURCE.join("scripts");
-    pub(crate) const PATCHES: RelPath = RelPath::SOURCE.join("patches");
-
-    pub(crate) const fn join(&'static self, suffix: &'static str) -> RelPath {
-        RelPath::Join(self, suffix)
+    pub(crate) const fn source(suffix: &'static str) -> RelPath {
+        RelPath { base: PathBase::Source, suffix }
     }
 
-    pub(crate) fn to_path(&self, dirs: &Dirs) -> PathBuf {
-        match self {
-            RelPath::Base(base) => base.to_path(dirs),
-            RelPath::Join(base, suffix) => base.to_path(dirs).join(suffix),
-        }
+    pub(crate) const fn build(suffix: &'static str) -> RelPath {
+        RelPath { base: PathBase::Build, suffix }
     }
 
-    pub(crate) fn ensure_exists(&self, dirs: &Dirs) {
-        fs::create_dir_all(self.to_path(dirs)).unwrap();
+    pub(crate) fn to_path(&self, dirs: &Dirs) -> PathBuf {
+        self.base.to_path(dirs).join(self.suffix)
     }
 }

build_system/prepare.rs

@@ -85,7 +85,7 @@ impl GitRepo {
 
     pub(crate) const fn source_dir(&self) -> RelPath {
         match self.url {
-            GitRepoUrl::Github { user: _, repo } => RelPath::BUILD.join(repo),
+            GitRepoUrl::Github { user: _, repo } => RelPath::build(repo),
         }
     }
 
@@ -130,7 +130,7 @@ impl GitRepo {
         }
 
         let source_lockfile =
-            RelPath::PATCHES.to_path(dirs).join(format!("{}-lock.toml", self.patch_name));
+            dirs.source_dir.join("patches").join(format!("{}-lock.toml", self.patch_name));
         let target_lockfile = download_dir.join("Cargo.lock");
         if source_lockfile.exists() {
             assert!(!target_lockfile.exists());
@@ -191,7 +191,7 @@ fn init_git_repo(repo_dir: &Path) {
 }
 
 fn get_patches(dirs: &Dirs, crate_name: &str) -> Vec<PathBuf> {
-    let mut patches: Vec<_> = fs::read_dir(RelPath::PATCHES.to_path(dirs))
+    let mut patches: Vec<_> = fs::read_dir(dirs.source_dir.join("patches"))
         .unwrap()
         .map(|entry| entry.unwrap().path())
         .filter(|path| path.extension() == Some(OsStr::new("patch")))

build_system/tests.rs

@@ -10,7 +10,7 @@ use crate::shared_utils::rustflags_from_env;
 use crate::utils::{CargoProject, Compiler, LogGroup, ensure_empty_dir, spawn_and_wait};
 use crate::{CodegenBackend, SysrootKind, build_sysroot, config};
 
-static BUILD_EXAMPLE_OUT_DIR: RelPath = RelPath::BUILD.join("example");
+static BUILD_EXAMPLE_OUT_DIR: RelPath = RelPath::build("example");
 
 struct TestCase {
     config: &'static str,
@@ -129,11 +129,11 @@ pub(crate) static REGEX_REPO: GitRepo = GitRepo::github(
 
 static REGEX: CargoProject = CargoProject::new(&REGEX_REPO.source_dir(), "regex_target");
 
-static PORTABLE_SIMD_SRC: RelPath = RelPath::BUILD.join("portable-simd");
+static PORTABLE_SIMD_SRC: RelPath = RelPath::build("portable-simd");
 
 static PORTABLE_SIMD: CargoProject = CargoProject::new(&PORTABLE_SIMD_SRC, "portable-simd_target");
 
-static LIBCORE_TESTS_SRC: RelPath = RelPath::BUILD.join("coretests");
+static LIBCORE_TESTS_SRC: RelPath = RelPath::build("coretests");
 
 static LIBCORE_TESTS: CargoProject = CargoProject::new(&LIBCORE_TESTS_SRC, "coretests_target");
 
@@ -162,7 +162,7 @@ const EXTENDED_SYSROOT_SUITE: &[TestCase] = &[
             &LIBCORE_TESTS_SRC.to_path(&runner.dirs),
         );
 
-        let source_lockfile = RelPath::PATCHES.to_path(&runner.dirs).join("coretests-lock.toml");
+        let source_lockfile = runner.dirs.source_dir.join("patches/coretests-lock.toml");
         let target_lockfile = LIBCORE_TESTS_SRC.to_path(&runner.dirs).join("Cargo.lock");
         fs::copy(source_lockfile, target_lockfile).unwrap();
 

build_system/utils.rs

@@ -93,7 +93,7 @@ impl CargoProject {
     }
 
     pub(crate) fn target_dir(&self, dirs: &Dirs) -> PathBuf {
-        RelPath::BUILD.join(self.target).to_path(dirs)
+        dirs.build_dir.join(self.target)
     }
 
     #[must_use]