bendns' repos / rust-analyzer
Unnamed repository; edit this file 'description' to name the repository.
Diffstat (limited to 'crates/hir-ty/src/layout/target.rs')
-rw-r--r--crates/hir-ty/src/layout/target.rs99
1 files changed, 2 insertions, 97 deletions
diff --git a/crates/hir-ty/src/layout/target.rs b/crates/hir-ty/src/layout/target.rs
index 54fa0fd9ea..37b831652f 100644
--- a/crates/hir-ty/src/layout/target.rs
+++ b/crates/hir-ty/src/layout/target.rs
@@ -3,12 +3,10 @@
use std::sync::Arc;
use base_db::CrateId;
-use hir_def::layout::{TargetDataLayout, TargetDataLayoutErrors};
+use hir_def::layout::{Endian, Size, TargetDataLayout};
use crate::db::HirDatabase;
-use hir_def::layout::{AbiAndPrefAlign, AddressSpace, Align, Endian, Size};
-
pub fn target_data_layout_query(db: &dyn HirDatabase, krate: CrateId) -> Arc<TargetDataLayout> {
let crate_graph = db.crate_graph();
let target_layout = &crate_graph[krate].target_layout;
@@ -16,7 +14,7 @@ pub fn target_data_layout_query(db: &dyn HirDatabase, krate: CrateId) -> Arc<Tar
Arc::new(
target_layout
.as_ref()
- .and_then(|it| parse_from_llvm_datalayout_string(it).ok())
+ .and_then(|it| TargetDataLayout::parse_from_llvm_datalayout_string(it).ok())
.unwrap_or_else(|| {
let endian = match cfg_options.get_cfg_values("target_endian").next() {
Some(x) if x.as_str() == "big" => Endian::Big,
@@ -36,96 +34,3 @@ pub fn target_data_layout_query(db: &dyn HirDatabase, krate: CrateId) -> Arc<Tar
}),
)
}
-
-/// copied from rustc as it is not exposed yet
-fn parse_from_llvm_datalayout_string<'a>(
- input: &'a str,
-) -> Result<TargetDataLayout, TargetDataLayoutErrors<'a>> {
- // Parse an address space index from a string.
- let parse_address_space = |s: &'a str, cause: &'a str| {
- s.parse::<u32>().map(AddressSpace).map_err(|err| {
- TargetDataLayoutErrors::InvalidAddressSpace { addr_space: s, cause, err }
- })
- };
-
- // Parse a bit count from a string.
- let parse_bits = |s: &'a str, kind: &'a str, cause: &'a str| {
- s.parse::<u64>().map_err(|err| TargetDataLayoutErrors::InvalidBits {
- kind,
- bit: s,
- cause,
- err,
- })
- };
-
- // Parse a size string.
- let size = |s: &'a str, cause: &'a str| parse_bits(s, "size", cause).map(Size::from_bits);
-
- // Parse an alignment string.
- let align = |s: &[&'a str], cause: &'a str| {
- if s.is_empty() {
- return Err(TargetDataLayoutErrors::MissingAlignment { cause });
- }
- let align_from_bits = |bits| {
- Align::from_bits(bits)
- .map_err(|err| TargetDataLayoutErrors::InvalidAlignment { cause, err })
- };
- let abi = parse_bits(s[0], "alignment", cause)?;
- let pref = s.get(1).map_or(Ok(abi), |pref| parse_bits(pref, "alignment", cause))?;
- Ok(AbiAndPrefAlign { abi: align_from_bits(abi)?, pref: align_from_bits(pref)? })
- };
-
- let mut dl = TargetDataLayout::default();
- let mut i128_align_src = 64;
- for spec in input.split('-') {
- let spec_parts = spec.split(':').collect::<Vec<_>>();
-
- match &*spec_parts {
- ["e"] => dl.endian = Endian::Little,
- ["E"] => dl.endian = Endian::Big,
- [p] if p.starts_with('P') => {
- dl.instruction_address_space = parse_address_space(&p[1..], "P")?
- }
- ["a", ref a @ ..] => dl.aggregate_align = align(a, "a")?,
- ["f32", ref a @ ..] => dl.f32_align = align(a, "f32")?,
- ["f64", ref a @ ..] => dl.f64_align = align(a, "f64")?,
- [p @ "p", s, ref a @ ..] | [p @ "p0", s, ref a @ ..] => {
- dl.pointer_size = size(s, p)?;
- dl.pointer_align = align(a, p)?;
- }
- [s, ref a @ ..] if s.starts_with('i') => {
- let Ok(bits) = s[1..].parse::<u64>() else {
- size(&s[1..], "i")?; // For the user error.
- continue;
- };
- let a = align(a, s)?;
- match bits {
- 1 => dl.i1_align = a,
- 8 => dl.i8_align = a,
- 16 => dl.i16_align = a,
- 32 => dl.i32_align = a,
- 64 => dl.i64_align = a,
- _ => {}
- }
- if bits >= i128_align_src && bits <= 128 {
- // Default alignment for i128 is decided by taking the alignment of
- // largest-sized i{64..=128}.
- i128_align_src = bits;
- dl.i128_align = a;
- }
- }
- [s, ref a @ ..] if s.starts_with('v') => {
- let v_size = size(&s[1..], "v")?;
- let a = align(a, s)?;
- if let Some(v) = dl.vector_align.iter_mut().find(|v| v.0 == v_size) {
- v.1 = a;
- continue;
- }
- // No existing entry, add a new one.
- dl.vector_align.push((v_size, a));
- }
- _ => {} // Ignore everything else.
- }
- }
- Ok(dl)
-}