refactor(toml): Pull out schema

Remaining steps
- Decouple `toml/mod.rs` functionality from `toml/schema.rs`
- Pull out `core/` types referenced by `toml/schema.rs`

src/bin/cargo/main.rs

@@ -4,7 +4,7 @@
 
 use cargo::util::network::http::http_handle;
 use cargo::util::network::http::needs_custom_http_transport;
-use cargo::util::toml::StringOrVec;
+use cargo::util::toml::schema::StringOrVec;
 use cargo::util::CliError;
 use cargo::util::{self, closest_msg, command_prelude, CargoResult, CliResult, Config};
 use cargo_util::{ProcessBuilder, ProcessError};

src/cargo/core/compiler/mod.rs

@@ -93,8 +93,8 @@ use crate::core::{Feature, PackageId, Target, Verbosity};
 use crate::util::errors::{CargoResult, VerboseError};
 use crate::util::interning::InternedString;
 use crate::util::machine_message::{self, Message};
-use crate::util::toml::TomlDebugInfo;
-use crate::util::toml::TomlTrimPaths;
+use crate::util::toml::schema::TomlDebugInfo;
+use crate::util::toml::schema::TomlTrimPaths;
 use crate::util::{add_path_args, internal, iter_join_onto, profile};
 use cargo_util::{paths, ProcessBuilder, ProcessError};
 use rustfix::diagnostics::Applicability;

src/cargo/core/manifest.rs

@@ -18,7 +18,7 @@ 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::toml::schema::{TomlManifest, TomlProfiles};
 use crate::util::{short_hash, Config, Filesystem, RustVersion};
 
 pub enum EitherManifest {

src/cargo/core/mod.rs

@@ -14,7 +14,7 @@ pub use self::workspace::{
     find_workspace_root, resolve_relative_path, MaybePackage, Workspace, WorkspaceConfig,
     WorkspaceRootConfig,
 };
-pub use crate::util::toml::InheritableFields;
+pub use crate::util::toml::schema::InheritableFields;
 
 pub mod compiler;
 pub mod dependency;

src/cargo/core/profiles.rs

@@ -27,9 +27,9 @@ use crate::core::resolver::features::FeaturesFor;
 use crate::core::Feature;
 use crate::core::{PackageId, PackageIdSpec, Resolve, Shell, Target, Workspace};
 use crate::util::interning::InternedString;
-use crate::util::toml::TomlTrimPaths;
-use crate::util::toml::TomlTrimPathsValue;
-use crate::util::toml::{
+use crate::util::toml::schema::TomlTrimPaths;
+use crate::util::toml::schema::TomlTrimPathsValue;
+use crate::util::toml::schema::{
     ProfilePackageSpec, StringOrBool, TomlDebugInfo, TomlProfile, TomlProfiles,
 };
 use crate::util::{closest_msg, config, CargoResult, Config};

src/cargo/core/workspace.rs

@@ -22,7 +22,9 @@ use crate::sources::{PathSource, CRATES_IO_INDEX, CRATES_IO_REGISTRY};
 use crate::util::edit_distance;
 use crate::util::errors::{CargoResult, ManifestError};
 use crate::util::interning::InternedString;
-use crate::util::toml::{read_manifest, InheritableFields, TomlDependency, TomlProfiles};
+use crate::util::toml::{
+    read_manifest, schema::InheritableFields, schema::TomlDependency, schema::TomlProfiles,
+};
 use crate::util::RustVersion;
 use crate::util::{config::ConfigRelativePath, Config, Filesystem, IntoUrl};
 use cargo_util::paths;

src/cargo/ops/cargo_package.rs

@@ -16,7 +16,7 @@ use crate::sources::PathSource;
 use crate::util::cache_lock::CacheLockMode;
 use crate::util::config::JobsConfig;
 use crate::util::errors::CargoResult;
-use crate::util::toml::TomlManifest;
+use crate::util::toml::schema::TomlManifest;
 use crate::util::{self, human_readable_bytes, restricted_names, Config, FileLock};
 use crate::{drop_println, ops};
 use anyhow::Context as _;

src/cargo/util/command_prelude.rs

@@ -7,7 +7,7 @@ use crate::util::important_paths::find_root_manifest_for_wd;
 use crate::util::interning::InternedString;
 use crate::util::is_rustup;
 use crate::util::restricted_names::is_glob_pattern;
-use crate::util::toml::{StringOrVec, TomlProfile};
+use crate::util::toml::schema::{StringOrVec, TomlProfile};
 use crate::util::validate_package_name;
 use crate::util::{
     print_available_benches, print_available_binaries, print_available_examples,