Auto merge of #13080 - epage:toml, r=weihanglo

refactor(toml): Decouple logic from schema

### What does this PR try to resolve?

This tries to decouple cargo logic from the schemas so we can split the schemas out into a separate crate for #12801

Profile layering was one of the few pieces of logic I kept in the schema, assuming its general enough / decoupled enough from cargo policies.

### How should we test and review this PR?

Each step is broken down into its own commit for easier analysis

### Additional information

src/cargo/core/features.rs

@@ -168,7 +168,7 @@ pub const SEE_CHANNELS: &str =
 /// - Update [`CLI_VALUES`] to include the new edition.
 /// - Set [`LATEST_UNSTABLE`] to Some with the new edition.
 /// - Add an unstable feature to the [`features!`] macro invocation below for the new edition.
-/// - Gate on that new feature in [`TomlManifest::to_real_manifest`].
+/// - Gate on that new feature in [`toml::to_real_manifest`].
 /// - Update the shell completion files.
 /// - Update any failing tests (hopefully there are very few).
 /// - Update unstable.md to add a new section for this new edition (see [this example]).
@@ -195,7 +195,7 @@ pub const SEE_CHANNELS: &str =
 /// [`LATEST_STABLE`]: Edition::LATEST_STABLE
 /// [this example]: https://github.com/rust-lang/cargo/blob/3ebb5f15a940810f250b68821149387af583a79e/src/doc/src/reference/unstable.md?plain=1#L1238-L1264
 /// [`is_stable`]: Edition::is_stable
-/// [`TomlManifest::to_real_manifest`]: crate::util::toml::schema::TomlManifest::to_real_manifest
+/// [`toml::to_real_manifest`]: crate::util::toml::to_real_manifest
 /// [`features!`]: macro.features.html
 #[derive(Clone, Copy, Debug, Hash, PartialOrd, Ord, Eq, PartialEq, Serialize, Deserialize)]
 pub enum Edition {

src/cargo/core/package.rs

@@ -31,6 +31,7 @@ use crate::util::network::http::http_handle_and_timeout;
 use crate::util::network::http::HttpTimeout;
 use crate::util::network::retry::{Retry, RetryResult};
 use crate::util::network::sleep::SleepTracker;
+use crate::util::toml::prepare_for_publish;
 use crate::util::RustVersion;
 use crate::util::{self, internal, Config, Progress, ProgressStyle};
 
@@ -197,10 +198,7 @@ impl Package {
     }
 
     pub fn to_registry_toml(&self, ws: &Workspace<'_>) -> CargoResult<String> {
-        let manifest = self
-            .manifest()
-            .original()
-            .prepare_for_publish(ws, self.root())?;
+        let manifest = prepare_for_publish(self.manifest().original(), ws, self.root())?;
         let toml = toml::to_string_pretty(&manifest)?;
         Ok(format!("{}\n{}", MANIFEST_PREAMBLE, toml))
     }

src/cargo/core/profiles.rs

@@ -32,6 +32,7 @@ use crate::util::toml::schema::TomlTrimPathsValue;
 use crate::util::toml::schema::{
     ProfilePackageSpec, StringOrBool, TomlDebugInfo, TomlProfile, TomlProfiles,
 };
+use crate::util::toml::validate_profile;
 use crate::util::{closest_msg, config, CargoResult, Config};
 use anyhow::{bail, Context as _};
 use std::collections::{BTreeMap, HashMap, HashSet};
@@ -1235,20 +1236,19 @@ fn get_config_profile(ws: &Workspace<'_>, name: &str) -> CargoResult<Option<Toml
         return Ok(None);
     };
     let mut warnings = Vec::new();
-    profile
-        .val
-        .validate(
-            name,
-            ws.config().cli_unstable(),
-            ws.unstable_features(),
-            &mut warnings,
+    validate_profile(
+        &profile.val,
+        name,
+        ws.config().cli_unstable(),
+        ws.unstable_features(),
+        &mut warnings,
+    )
+    .with_context(|| {
+        format!(
+            "config profile `{}` is not valid (defined in `{}`)",
+            name, profile.definition
         )
-        .with_context(|| {
-            format!(
-                "config profile `{}` is not valid (defined in `{}`)",
-                name, profile.definition
-            )
-        })?;
+    })?;
     for warning in warnings {
         ws.config().shell().warn(warning)?;
     }

src/cargo/core/workspace.rs

@@ -437,7 +437,8 @@ impl<'cfg> Workspace<'cfg> {
                 url,
                 deps.iter()
                     .map(|(name, dep)| {
-                        dep.to_dependency_split(
+                        crate::util::toml::to_dependency(
+                            dep,
                             name,
                             source,
                             &mut nested_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::schema::TomlManifest;
+use crate::util::toml::{prepare_for_publish, to_real_manifest};
 use crate::util::{self, human_readable_bytes, restricted_names, Config, FileLock};
 use crate::{drop_println, ops};
 use anyhow::Context as _;
@@ -454,14 +454,11 @@ fn build_lock(ws: &Workspace<'_>, orig_pkg: &Package) -> CargoResult<String> {
     let orig_resolve = ops::load_pkg_lockfile(ws)?;
 
     // Convert Package -> TomlManifest -> Manifest -> Package
-    let toml_manifest = orig_pkg
-        .manifest()
-        .original()
-        .prepare_for_publish(ws, orig_pkg.root())?;
+    let toml_manifest = prepare_for_publish(orig_pkg.manifest().original(), ws, orig_pkg.root())?;
     let package_root = orig_pkg.root();
     let source_id = orig_pkg.package_id().source_id();
     let (manifest, _nested_paths) =
-        TomlManifest::to_real_manifest(toml_manifest, false, source_id, package_root, config)?;
+        to_real_manifest(toml_manifest, false, source_id, package_root, config)?;
     let new_pkg = Package::new(manifest, orig_pkg.manifest_path());
 
     let max_rust_version = new_pkg.rust_version().cloned();