Auto merge of #8419 - est31:string_interning, r=ehuss

Move string interning to util

Code that handles string interning is rather an util functionality than
a core functionality.

Author: bors

src/cargo/core/compiler/build_config.rs

@@ -1,5 +1,5 @@
 use crate::core::compiler::CompileKind;
-use crate::core::interning::InternedString;
+use crate::util::interning::InternedString;
 use crate::util::ProcessBuilder;
 use crate::util::{CargoResult, Config, RustfixDiagnosticServer};
 use anyhow::bail;

src/cargo/core/compiler/build_context/mod.rs

@@ -2,9 +2,10 @@ use crate::core::compiler::unit_graph::UnitGraph;
 use crate::core::compiler::{BuildConfig, CompileKind, Unit};
 use crate::core::profiles::Profiles;
 use crate::core::PackageSet;
-use crate::core::{InternedString, Workspace};
+use crate::core::Workspace;
 use crate::util::config::Config;
 use crate::util::errors::CargoResult;
+use crate::util::interning::InternedString;
 use crate::util::Rustc;
 use std::collections::HashMap;
 use std::path::PathBuf;

src/cargo/core/compiler/compile_kind.rs

@@ -1,5 +1,6 @@
-use crate::core::{InternedString, Target};
+use crate::core::Target;
 use crate::util::errors::{CargoResult, CargoResultExt};
+use crate::util::interning::InternedString;
 use crate::util::Config;
 use anyhow::bail;
 use serde::Serialize;

src/cargo/core/compiler/fingerprint.rs

@@ -323,9 +323,10 @@ use serde::ser;
 use serde::{Deserialize, Serialize};
 
 use crate::core::compiler::unit_graph::UnitDep;
-use crate::core::{InternedString, Package};
+use crate::core::Package;
 use crate::util;
 use crate::util::errors::{CargoResult, CargoResultExt};
+use crate::util::interning::InternedString;
 use crate::util::paths;
 use crate::util::{internal, profile};
 

src/cargo/core/compiler/lto.rs

@@ -1,6 +1,6 @@
 use crate::core::compiler::{CompileMode, Context, CrateType, Unit};
-use crate::core::interning::InternedString;
 use crate::core::profiles;
+use crate::util::interning::InternedString;
 
 use crate::util::errors::CargoResult;
 use std::collections::hash_map::{Entry, HashMap};

src/cargo/core/compiler/mod.rs

@@ -49,8 +49,9 @@ use self::unit_graph::UnitDep;
 pub use crate::core::compiler::unit::{Unit, UnitInterner};
 use crate::core::manifest::TargetSourcePath;
 use crate::core::profiles::{PanicStrategy, Profile, Strip};
-use crate::core::{Edition, Feature, InternedString, PackageId, Target};
+use crate::core::{Edition, Feature, PackageId, Target};
 use crate::util::errors::{self, CargoResult, CargoResultExt, ProcessError, VerboseError};
+use crate::util::interning::InternedString;
 use crate::util::machine_message::Message;
 use crate::util::{self, machine_message, ProcessBuilder};
 use crate::util::{internal, join_paths, paths, profile};

src/cargo/core/compiler/unit.rs

@@ -1,7 +1,8 @@
 use crate::core::compiler::{CompileKind, CompileMode, CrateType};
 use crate::core::manifest::{Target, TargetKind};
-use crate::core::{profiles::Profile, InternedString, Package};
+use crate::core::{profiles::Profile, Package};
 use crate::util::hex::short_hash;
+use crate::util::interning::InternedString;
 use crate::util::Config;
 use std::cell::RefCell;
 use std::collections::HashSet;

src/cargo/core/compiler/unit_dependencies.rs

@@ -22,8 +22,9 @@ use crate::core::dependency::DepKind;
 use crate::core::profiles::{Profile, Profiles, UnitFor};
 use crate::core::resolver::features::{FeaturesFor, ResolvedFeatures};
 use crate::core::resolver::Resolve;
-use crate::core::{InternedString, Package, PackageId, PackageSet, Target, Workspace};
+use crate::core::{Package, PackageId, PackageSet, Target, Workspace};
 use crate::ops::resolve_all_features;
+use crate::util::interning::InternedString;
 use crate::util::Config;
 use crate::CargoResult;
 use log::trace;

src/cargo/core/compiler/unit_graph.rs

@@ -1,7 +1,8 @@
 use crate::core::compiler::Unit;
 use crate::core::compiler::{CompileKind, CompileMode};
 use crate::core::profiles::{Profile, UnitFor};
-use crate::core::{nightly_features_allowed, InternedString, PackageId, Target};
+use crate::core::{nightly_features_allowed, PackageId, Target};
+use crate::util::interning::InternedString;
 use crate::util::CargoResult;
 use std::collections::HashMap;
 use std::io::Write;

src/cargo/core/dependency.rs

@@ -6,9 +6,9 @@ use serde::ser;
 use serde::Serialize;
 use std::rc::Rc;
 
-use crate::core::interning::InternedString;
 use crate::core::{PackageId, SourceId, Summary};
 use crate::util::errors::{CargoResult, CargoResultExt};
+use crate::util::interning::InternedString;
 use crate::util::Config;
 
 /// Information about a dependency requested by a Cargo manifest.

src/cargo/core/manifest.rs

@@ -11,11 +11,11 @@ use serde::Serialize;
 use url::Url;
 
 use crate::core::compiler::CrateType;
-use crate::core::interning::InternedString;
 use crate::core::resolver::ResolveBehavior;
 use crate::core::{Dependency, PackageId, PackageIdSpec, SourceId, Summary};
 use crate::core::{Edition, Feature, Features, WorkspaceConfig};
 use crate::util::errors::*;
+use crate::util::interning::InternedString;
 use crate::util::toml::{TomlManifest, TomlProfiles};
 use crate::util::{short_hash, Config, Filesystem};
 

src/cargo/core/mod.rs

@@ -3,7 +3,6 @@ pub use self::features::{
     enable_nightly_features, maybe_allow_nightly_features, nightly_features_allowed,
 };
 pub use self::features::{CliUnstable, Edition, Feature, Features};
-pub use self::interning::InternedString;
 pub use self::manifest::{EitherManifest, VirtualManifest};
 pub use self::manifest::{Manifest, Target, TargetKind};
 pub use self::package::{Package, PackageSet};
@@ -19,7 +18,6 @@ pub use self::workspace::{Members, Workspace, WorkspaceConfig, WorkspaceRootConf
 pub mod compiler;
 pub mod dependency;
 pub mod features;
-mod interning;
 pub mod manifest;
 pub mod package;
 pub mod package_id;

src/cargo/core/package.rs

@@ -20,14 +20,14 @@ use serde::Serialize;
 
 use crate::core::compiler::{CompileKind, RustcTargetData};
 use crate::core::dependency::DepKind;
-use crate::core::interning::InternedString;
 use crate::core::resolver::{HasDevUnits, Resolve};
 use crate::core::source::MaybePackage;
 use crate::core::{Dependency, Manifest, PackageId, SourceId, Target};
 use crate::core::{FeatureMap, SourceMap, Summary, Workspace};
 use crate::ops;
 use crate::util::config::PackageCacheLock;
 use crate::util::errors::{CargoResult, CargoResultExt, HttpNot200};
+use crate::util::interning::InternedString;
 use crate::util::network::Retry;
 use crate::util::{self, internal, Config, Progress, ProgressStyle};
 

src/cargo/core/package_id.rs

@@ -9,8 +9,8 @@ use std::sync::Mutex;
 use serde::de;
 use serde::ser;
 
-use crate::core::interning::InternedString;
 use crate::core::source::SourceId;
+use crate::util::interning::InternedString;
 use crate::util::{CargoResult, ToSemver};
 
 lazy_static::lazy_static! {

src/cargo/core/package_id_spec.rs

@@ -5,9 +5,9 @@ use semver::Version;
 use serde::{de, ser};
 use url::Url;
 
-use crate::core::interning::InternedString;
 use crate::core::PackageId;
 use crate::util::errors::{CargoResult, CargoResultExt};
+use crate::util::interning::InternedString;
 use crate::util::{validate_package_name, IntoUrl, ToSemver};
 
 /// Some or all of the data required to identify a package:
@@ -274,8 +274,8 @@ impl<'de> de::Deserialize<'de> for PackageIdSpec {
 #[cfg(test)]
 mod tests {
     use super::PackageIdSpec;
-    use crate::core::interning::InternedString;
     use crate::core::{PackageId, SourceId};
+    use crate::util::interning::InternedString;
     use crate::util::ToSemver;
     use url::Url;
 

src/cargo/core/profiles.rs

@@ -1,8 +1,8 @@
 use crate::core::compiler::CompileMode;
-use crate::core::interning::InternedString;
 use crate::core::resolver::features::FeaturesFor;
 use crate::core::{Feature, Features, PackageId, PackageIdSpec, Resolve, Shell};
 use crate::util::errors::CargoResultExt;
+use crate::util::interning::InternedString;
 use crate::util::toml::{ProfilePackageSpec, StringOrBool, TomlProfile, TomlProfiles, U32OrBool};
 use crate::util::{closest_msg, config, CargoResult, Config};
 use anyhow::bail;

src/cargo/core/registry.rs

@@ -5,10 +5,11 @@ use log::{debug, trace};
 use semver::VersionReq;
 use url::Url;
 
+use crate::core::PackageSet;
 use crate::core::{Dependency, PackageId, Source, SourceId, SourceMap, Summary};
-use crate::core::{InternedString, PackageSet};
 use crate::sources::config::SourceConfigMap;
 use crate::util::errors::{CargoResult, CargoResultExt};
+use crate::util::interning::InternedString;
 use crate::util::{profile, CanonicalUrl, Config};
 
 /// Source of information about a group of packages.

src/cargo/core/resolver/context.rs

@@ -4,8 +4,8 @@ use std::num::NonZeroU64;
 use anyhow::format_err;
 use log::debug;
 
-use crate::core::interning::InternedString;
 use crate::core::{Dependency, PackageId, SourceId, Summary};
+use crate::util::interning::InternedString;
 use crate::util::Graph;
 
 use super::dep_cache::RegistryQueryer;

src/cargo/core/resolver/dep_cache.rs

@@ -15,11 +15,11 @@ use std::rc::Rc;
 
 use log::debug;
 
-use crate::core::interning::InternedString;
 use crate::core::resolver::context::Context;
 use crate::core::resolver::errors::describe_path;
 use crate::core::{Dependency, FeatureValue, PackageId, PackageIdSpec, Registry, Summary};
 use crate::util::errors::{CargoResult, CargoResultExt};
+use crate::util::interning::InternedString;
 
 use crate::core::resolver::types::{ConflictReason, DepInfo, FeaturesSet};
 use crate::core::resolver::{ActivateResult, ResolveOpts};

src/cargo/core/resolver/encode.rs

@@ -98,9 +98,9 @@ use serde::de;
 use serde::ser;
 use serde::{Deserialize, Serialize};
 
-use crate::core::InternedString;
 use crate::core::{Dependency, Package, PackageId, SourceId, Workspace};
 use crate::util::errors::{CargoResult, CargoResultExt};
+use crate::util::interning::InternedString;
 use crate::util::{internal, Graph};
 
 use super::{Resolve, ResolveVersion};

src/cargo/core/resolver/features.rs

@@ -42,7 +42,8 @@ use crate::core::compiler::{CompileKind, RustcTargetData};
 use crate::core::dependency::{DepKind, Dependency};
 use crate::core::resolver::types::FeaturesSet;
 use crate::core::resolver::{Resolve, ResolveBehavior};
-use crate::core::{FeatureValue, InternedString, PackageId, PackageIdSpec, PackageSet, Workspace};
+use crate::core::{FeatureValue, PackageId, PackageIdSpec, PackageSet, Workspace};
+use crate::util::interning::InternedString;
 use crate::util::CargoResult;
 use std::collections::{BTreeSet, HashMap, HashSet};
 use std::rc::Rc;

src/cargo/core/resolver/resolve.rs

@@ -1,8 +1,8 @@
 use super::encode::Metadata;
 use crate::core::dependency::DepKind;
-use crate::core::interning::InternedString;
 use crate::core::{Dependency, PackageId, PackageIdSpec, Summary, Target};
 use crate::util::errors::CargoResult;
+use crate::util::interning::InternedString;
 use crate::util::Graph;
 use std::borrow::Borrow;
 use std::cmp;

src/cargo/core/resolver/types.rs

@@ -1,7 +1,7 @@
 use super::features::RequestedFeatures;
-use crate::core::interning::InternedString;
 use crate::core::{Dependency, PackageId, Summary};
 use crate::util::errors::CargoResult;
+use crate::util::interning::InternedString;
 use crate::util::Config;
 use std::cmp::Ordering;
 use std::collections::{BTreeMap, BTreeSet};

src/cargo/core/summary.rs

@@ -7,8 +7,8 @@ use std::rc::Rc;
 
 use serde::{Serialize, Serializer};
 
-use crate::core::interning::InternedString;
 use crate::core::{Dependency, PackageId, SourceId};
+use crate::util::interning::InternedString;
 use semver::Version;
 
 use crate::util::CargoResult;

src/cargo/core/workspace.rs

@@ -13,11 +13,12 @@ use crate::core::features::Features;
 use crate::core::registry::PackageRegistry;
 use crate::core::resolver::features::RequestedFeatures;
 use crate::core::resolver::ResolveBehavior;
-use crate::core::{Dependency, InternedString, PackageId, PackageIdSpec};
+use crate::core::{Dependency, PackageId, PackageIdSpec};
 use crate::core::{EitherManifest, Package, SourceId, VirtualManifest};
 use crate::ops;
 use crate::sources::PathSource;
 use crate::util::errors::{CargoResult, CargoResultExt, ManifestError};
+use crate::util::interning::InternedString;
 use crate::util::paths;
 use crate::util::toml::{read_manifest, TomlProfiles};
 use crate::util::{Config, Filesystem};

src/cargo/ops/cargo_clean.rs

@@ -1,8 +1,9 @@
 use crate::core::compiler::{CompileKind, CompileMode, Layout, RustcTargetData};
 use crate::core::profiles::Profiles;
-use crate::core::{InternedString, PackageIdSpec, TargetKind, Workspace};
+use crate::core::{PackageIdSpec, TargetKind, Workspace};
 use crate::ops;
 use crate::util::errors::{CargoResult, CargoResultExt};
+use crate::util::interning::InternedString;
 use crate::util::paths;
 use crate::util::Config;
 use std::fs;

src/cargo/ops/cargo_output_metadata.rs

@@ -1,8 +1,9 @@
 use crate::core::compiler::{CompileKind, RustcTargetData};
 use crate::core::dependency::DepKind;
 use crate::core::resolver::{HasDevUnits, Resolve, ResolveOpts};
-use crate::core::{Dependency, InternedString, Package, PackageId, Workspace};
+use crate::core::{Dependency, Package, PackageId, Workspace};
 use crate::ops::{self, Packages};
+use crate::util::interning::InternedString;
 use crate::util::CargoResult;
 use cargo_platform::Platform;
 use serde::Serialize;

src/cargo/ops/tree/graph.rs

@@ -5,9 +5,8 @@ use crate::core::compiler::{CompileKind, RustcTargetData};
 use crate::core::dependency::DepKind;
 use crate::core::resolver::features::{FeaturesFor, RequestedFeatures, ResolvedFeatures};
 use crate::core::resolver::Resolve;
-use crate::core::{
-    FeatureMap, FeatureValue, InternedString, Package, PackageId, PackageIdSpec, Workspace,
-};
+use crate::core::{FeatureMap, FeatureValue, Package, PackageId, PackageIdSpec, Workspace};
+use crate::util::interning::InternedString;
 use crate::util::CargoResult;
 use std::collections::{HashMap, HashSet};
 

src/cargo/sources/registry/index.rs

@@ -67,8 +67,9 @@
 //! hopefully those are more obvious inline in the code itself.
 
 use crate::core::dependency::Dependency;
-use crate::core::{InternedString, PackageId, SourceId, Summary};
+use crate::core::{PackageId, SourceId, Summary};
 use crate::sources::registry::{RegistryData, RegistryPackage};
+use crate::util::interning::InternedString;
 use crate::util::paths;
 use crate::util::{internal, CargoResult, Config, Filesystem, ToSemver};
 use log::info;

src/cargo/sources/registry/local.rs

@@ -1,6 +1,7 @@
-use crate::core::{InternedString, PackageId};
+use crate::core::PackageId;
 use crate::sources::registry::{MaybeLock, RegistryConfig, RegistryData};
 use crate::util::errors::CargoResult;
+use crate::util::interning::InternedString;
 use crate::util::paths;
 use crate::util::{Config, Filesystem, Sha256};
 use std::fs::File;

src/cargo/sources/registry/mod.rs

@@ -173,10 +173,11 @@ use tar::Archive;
 
 use crate::core::dependency::{DepKind, Dependency};
 use crate::core::source::MaybePackage;
-use crate::core::{InternedString, Package, PackageId, Source, SourceId, Summary};
+use crate::core::{Package, PackageId, Source, SourceId, Summary};
 use crate::sources::PathSource;
 use crate::util::errors::CargoResultExt;
 use crate::util::hex;
+use crate::util::interning::InternedString;
 use crate::util::into_url::IntoUrl;
 use crate::util::{restricted_names, CargoResult, Config, Filesystem};
 

src/cargo/sources/registry/remote.rs

@@ -1,11 +1,12 @@
-use crate::core::{GitReference, InternedString, PackageId, SourceId};
+use crate::core::{GitReference, PackageId, SourceId};
 use crate::sources::git;
 use crate::sources::registry::MaybeLock;
 use crate::sources::registry::{
     RegistryConfig, RegistryData, CRATE_TEMPLATE, LOWER_PREFIX_TEMPLATE, PREFIX_TEMPLATE,
     VERSION_TEMPLATE,
 };
 use crate::util::errors::{CargoResult, CargoResultExt};
+use crate::util::interning::InternedString;
 use crate::util::paths;
 use crate::util::{Config, Filesystem, Sha256};
 use lazycell::LazyCell;

src/cargo/util/command_prelude.rs

@@ -1,9 +1,9 @@
 use crate::core::compiler::{BuildConfig, MessageFormat};
-use crate::core::InternedString;
 use crate::core::Workspace;
 use crate::ops::{CompileFilter, CompileOptions, NewOptions, Packages, VersionControl};
 use crate::sources::CRATES_IO_REGISTRY;
 use crate::util::important_paths::find_root_manifest_for_wd;
+use crate::util::interning::InternedString;
 use crate::util::{paths, toml::TomlProfile, validate_package_name};
 use crate::util::{
     print_available_benches, print_available_binaries, print_available_examples,

src/cargo/core/interning.rs renamed to src/cargo/util/interning.rs

@@ -11,7 +11,7 @@ use std::ptr;
 use std::str;
 use std::sync::Mutex;
 
-pub fn leak(s: String) -> &'static str {
+fn leak(s: String) -> &'static str {
     Box::leak(s.into_boxed_str())
 }
 

src/cargo/util/mod.rs

@@ -43,6 +43,7 @@ pub mod graph;
 mod hasher;
 pub mod hex;
 pub mod important_paths;
+pub mod interning;
 pub mod into_url;
 mod into_url_with_base;
 pub mod job;