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Diffstat (limited to 'crates/hir-def/src/lower.rs')
| -rw-r--r-- | crates/hir-def/src/lower.rs | 26 |
1 files changed, 25 insertions, 1 deletions
diff --git a/crates/hir-def/src/lower.rs b/crates/hir-def/src/lower.rs index 6d1a3d1744..350bb8d517 100644 --- a/crates/hir-def/src/lower.rs +++ b/crates/hir-def/src/lower.rs @@ -2,7 +2,7 @@ use std::{cell::OnceCell, mem}; use hir_expand::{span_map::SpanMap, AstId, HirFileId, InFile}; -use span::{AstIdMap, AstIdNode}; +use span::{AstIdMap, AstIdNode, Edition, EditionedFileId, FileId, RealSpanMap}; use stdx::thin_vec::ThinVec; use syntax::ast; use triomphe::Arc; @@ -63,6 +63,30 @@ impl<'a> LowerCtx<'a> { } } + /// Prepares a `LowerCtx` for synthetic AST that needs to be lowered. This is intended for IDE things. + pub fn for_synthetic_ast( + db: &'a dyn DefDatabase, + ast_id_map: Arc<AstIdMap>, + types_map: &'a mut TypesMap, + types_source_map: &'a mut TypesSourceMap, + ) -> Self { + let file_id = EditionedFileId::new( + FileId::from_raw(EditionedFileId::MAX_FILE_ID), + Edition::Edition2015, + ); + LowerCtx { + db, + // Make up an invalid file id, so that if we will try to actually access it salsa will panic. + file_id: file_id.into(), + span_map: SpanMap::RealSpanMap(Arc::new(RealSpanMap::absolute(file_id))).into(), + ast_id_map: ast_id_map.into(), + impl_trait_bounds: Vec::new(), + outer_impl_trait: false, + types_map, + types_source_map, + } + } + pub(crate) fn span_map(&self) -> &SpanMap { self.span_map.get_or_init(|| self.db.span_map(self.file_id)) } |