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internal: Move proc-macro knowledge out of base-db

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This commit is contained in:
Lukas Wirth 2023-12-18 12:09:54 +01:00
parent 21b06c1beb
commit 35620306a6
50 changed files with 255 additions and 186 deletions
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47
crates/base-db/src/input.rs
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@ -6,7 +6,7 @@
//! actual IO. See `vfs` and `project_model` in the `rust-analyzer` crate for how
//! actual IO is done and lowered to input.
use std::{fmt, mem, ops, panic::RefUnwindSafe, str::FromStr, sync};
use std::{fmt, mem, ops, str::FromStr};
use cfg::CfgOptions;
use la_arena::{Arena, Idx};
@ -15,13 +15,9 @@ use syntax::SmolStr;
use triomphe::Arc;
use vfs::{file_set::FileSet, AbsPathBuf, AnchoredPath, FileId, VfsPath};
use crate::span::SpanData;
// Map from crate id to the name of the crate and path of the proc-macro. If the value is `None`,
// then the crate for the proc-macro hasn't been build yet as the build data is missing.
pub type ProcMacroPaths = FxHashMap<CrateId, Result<(Option<String>, AbsPathBuf), String>>;
pub type ProcMacros = FxHashMap<CrateId, ProcMacroLoadResult>;
/// Files are grouped into source roots. A source root is a directory on the
/// file systems which is watched for changes. Typically it corresponds to a
/// Rust crate. Source roots *might* be nested: in this case, a file belongs to
@ -242,49 +238,8 @@ impl CrateDisplayName {
CrateDisplayName { crate_name, canonical_name }
}
}
// FIXME: These should not be defined in here? Why does base db know about proc-macros
// ProcMacroKind is used in [`fixture`], but that module probably shouldn't be in this crate either.
#[derive(Debug, Copy, Clone, PartialEq, Eq, Hash)]
pub struct ProcMacroId(pub u32);
#[derive(Copy, Clone, Eq, PartialEq, Debug, Hash)]
pub enum ProcMacroKind {
CustomDerive,
FuncLike,
Attr,
}
pub trait ProcMacroExpander: fmt::Debug + Send + Sync + RefUnwindSafe {
fn expand(
&self,
subtree: &tt::Subtree<SpanData>,
attrs: Option<&tt::Subtree<SpanData>>,
env: &Env,
def_site: SpanData,
call_site: SpanData,
mixed_site: SpanData,
) -> Result<tt::Subtree<SpanData>, ProcMacroExpansionError>;
}
#[derive(Debug)]
pub enum ProcMacroExpansionError {
Panic(String),
/// Things like "proc macro server was killed by OOM".
System(String),
}
pub type ProcMacroLoadResult = Result<Vec<ProcMacro>, String>;
pub type TargetLayoutLoadResult = Result<Arc<str>, Arc<str>>;
#[derive(Debug, Clone)]
pub struct ProcMacro {
pub name: SmolStr,
pub kind: ProcMacroKind,
pub expander: sync::Arc<dyn ProcMacroExpander>,
}
#[derive(Debug, Copy, Clone, PartialEq, Eq, Hash, PartialOrd, Ord)]
pub enum ReleaseChannel {
Stable,