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Cleanup error variants in MIR code slightly

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This commit is contained in:
Lukas Wirth 2024-01-30 09:51:28 +01:00
parent 8a5829cf28
commit 5860763f18
17 changed files with 598 additions and 434 deletions
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2
crates/hir-ty/src/layout/adt.rs
View file

@ -32,7 +32,7 @@ pub fn layout_of_adt_query(
trait_env: Arc<TraitEnvironment>,
) -> Result<Arc<Layout>, LayoutError> {
let krate = trait_env.krate;
let Some(target) = db.target_data_layout(krate) else {
let Ok(target) = db.target_data_layout(krate) else {
return Err(LayoutError::TargetLayoutNotAvailable);
};
let cx = LayoutCx { target: &target };

44
crates/hir-ty/src/layout/target.rs
View file

@ -2,6 +2,7 @@
use base_db::CrateId;
use hir_def::layout::TargetDataLayout;
use ra_ap_rustc_abi::{AlignFromBytesError, TargetDataLayoutErrors};
use triomphe::Arc;
use crate::db::HirDatabase;
@ -9,15 +10,40 @@ use crate::db::HirDatabase;
pub fn target_data_layout_query(
db: &dyn HirDatabase,
krate: CrateId,
) -> Option<Arc<TargetDataLayout>> {
) -> Result<Arc<TargetDataLayout>, Arc<str>> {
let crate_graph = db.crate_graph();
let target_layout = crate_graph[krate].target_layout.as_ref().ok()?;
let res = TargetDataLayout::parse_from_llvm_datalayout_string(target_layout);
if let Err(_e) = &res {
// FIXME: Print the error here once it implements debug/display
// also logging here is somewhat wrong, but unfortunately this is the earliest place we can
// parse that doesn't impose a dependency to the rust-abi crate for project-model
tracing::error!("Failed to parse target data layout for {krate:?}");
let res = crate_graph[krate].target_layout.as_deref();
match res {
Ok(it) => match TargetDataLayout::parse_from_llvm_datalayout_string(it) {
Ok(it) => Ok(Arc::new(it)),
Err(e) => {
Err(match e {
TargetDataLayoutErrors::InvalidAddressSpace { addr_space, cause, err } => {
format!(
r#"invalid address space `{addr_space}` for `{cause}` in "data-layout": {err}"#
)
}
TargetDataLayoutErrors::InvalidBits { kind, bit, cause, err } => format!(r#"invalid {kind} `{bit}` for `{cause}` in "data-layout": {err}"#),
TargetDataLayoutErrors::MissingAlignment { cause } => format!(r#"missing alignment for `{cause}` in "data-layout""#),
TargetDataLayoutErrors::InvalidAlignment { cause, err } => format!(
r#"invalid alignment for `{cause}` in "data-layout": `{align}` is {err_kind}"#,
align = err.align(),
err_kind = match err {
AlignFromBytesError::NotPowerOfTwo(_) => "not a power of two",
AlignFromBytesError::TooLarge(_) => "too large",
}
),
TargetDataLayoutErrors::InconsistentTargetArchitecture { dl, target } => {
format!(r#"inconsistent target specification: "data-layout" claims architecture is {dl}-endian, while "target-endian" is `{target}`"#)
}
TargetDataLayoutErrors::InconsistentTargetPointerWidth {
pointer_size,
target,
} => format!(r#"inconsistent target specification: "data-layout" claims pointers are {pointer_size}-bit, while "target-pointer-width" is `{target}`"#),
TargetDataLayoutErrors::InvalidBitsSize { err } => err,
}.into())
}
},
Err(e) => Err(Arc::from(&**e)),
}
res.ok().map(Arc::new)
}