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Split rustc_hir_id out of rustc_hir

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Some crates depend on `rustc_hir` but only want `HirId` and similar id
types. `rustc_hir` is a heavy dependency, since it pulls in
`rustc_target`. Split these types out into their own crate
`rustc_hir_id`.

This allows `rustc_errors` to drop its direct dependency on `rustc_hir`.

(`rustc_errors` still depends on `rustc_hir` indirectly through
`rustc_lint_defs`; a subsequent commit will fix that.)
This commit is contained in:
Josh Triplett
2025-08-14 01:33:59 -07:00
parent b65fab6299
commit f3c8b7ad40
10 changed files with 61 additions and 35 deletions
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2
compiler/rustc_errors/Cargo.toml
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@@ -13,7 +13,7 @@ rustc_error_codes = { path = "../rustc_error_codes" }
rustc_error_messages = { path = "../rustc_error_messages" }
rustc_fluent_macro = { path = "../rustc_fluent_macro" }
rustc_hashes = { path = "../rustc_hashes" }
rustc_hir = { path = "../rustc_hir" }
rustc_hir_id = { path = "../rustc_hir_id" }
rustc_index = { path = "../rustc_index" }
rustc_lexer = { path = "../rustc_lexer" }
rustc_lint_defs = { path = "../rustc_lint_defs" }

2
compiler/rustc_errors/src/lib.rs
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@@ -60,7 +60,7 @@ pub use rustc_error_messages::{
fallback_fluent_bundle, fluent_bundle, into_diag_arg_using_display,
};
use rustc_hashes::Hash128;
use rustc_hir::HirId;
use rustc_hir_id::HirId;
pub use rustc_lint_defs::{Applicability, listify, pluralize};
use rustc_lint_defs::{Lint, LintExpectationId};
use rustc_macros::{Decodable, Encodable};