refactor: move PgLspPath into pg_fs crate

Cargo.toml

@@ -14,9 +14,11 @@ rust-version = "1.71"
 line_index = { path = "./lib/line_index", version = "0.0.0" }
 tree_sitter_sql = { path = "./lib/tree_sitter_sql", version = "0.0.0" }
 tree-sitter = "0.20.10"
+tracing = "0.1.40"
 
 # postgres specific crates
 pg_lexer = { path = "./crates/pg_lexer", version = "0.0.0" }
+pg_fs = { path = "./crates/pg_fs", version = "0.0.0" }
 pg_diagnostics = { path = "./crates/pg_diagnostics", version = "0.0.0" }
 pg_lexer_codegen = { path = "./crates/pg_lexer_codegen", version = "0.0.0" }
 pg_statement_splitter = { path = "./crates/pg_statement_splitter", version = "0.0.0" }

crates/pg_base_db/Cargo.toml

@@ -8,6 +8,7 @@ text-size = "1.1.1"
 line_index.workspace = true
 
 pg_statement_splitter.workspace = true
+pg_fs.workspace = true
 
 [dev-dependencies]
 

crates/pg_base_db/src/change.rs

@@ -291,7 +291,8 @@ impl DocumentChange {
 mod tests {
     use text_size::{TextRange, TextSize};
 
-    use crate::{change::Change, document::StatementRef, Document, DocumentChange, PgLspPath};
+    use crate::{change::Change, document::StatementRef, Document, DocumentChange};
+    use pg_fs::PgLspPath;
 
     #[test]
     fn test_document_apply_changes() {

crates/pg_base_db/src/document.rs

@@ -3,7 +3,7 @@ use std::{hash::Hash, hash::Hasher, ops::RangeBounds};
 use line_index::LineIndex;
 use text_size::{TextRange, TextSize};
 
-use crate::PgLspPath;
+use pg_fs::PgLspPath;
 
 extern crate test;
 
@@ -163,8 +163,9 @@ impl Document {
 mod tests {
 
     use text_size::{TextRange, TextSize};
+    use pg_fs::PgLspPath;
 
-    use crate::{Document, PgLspPath};
+    use crate::{Document};
 
     #[test]
     fn test_statements_at_range() {

crates/pg_base_db/src/lib.rs

@@ -15,8 +15,6 @@
 
 mod change;
 mod document;
-mod path;
 
 pub use change::{Change, ChangedStatement, DocumentChange, StatementChange};
 pub use document::{Document, StatementRef};
-pub use path::PgLspPath;

crates/pg_fs/Cargo.toml

@@ -0,0 +1,15 @@
+[package]
+name = "pg_fs"
+version = "0.0.0"
+edition = "2021"
+
+[dependencies]
+directories       = "5.0.1"
+tracing           = { workspace = true }
+
+[dev-dependencies]
+
+[lib]
+doctest = false
+
+[features]

crates/pg_fs/src/dir.rs

@@ -0,0 +1,21 @@
+use directories::ProjectDirs;
+use std::{env, fs, path::PathBuf};
+use tracing::warn;
+
+pub fn ensure_cache_dir() -> PathBuf {
+    if let Some(proj_dirs) = ProjectDirs::from("dev", "supabase-community", "pglsp") {
+        // Linux: /home/alice/.cache/biome
+        // Win: C:\Users\Alice\AppData\Local\biomejs\biome\cache
+        // Mac: /Users/Alice/Library/Caches/dev.biomejs.biome
+        let cache_dir = proj_dirs.cache_dir().to_path_buf();
+        if let Err(err) = fs::create_dir_all(&cache_dir) {
+            let temp_dir = env::temp_dir();
+            warn!("Failed to create local cache directory {cache_dir:?} due to error: {err}, fallback to {temp_dir:?}");
+            temp_dir
+        } else {
+            cache_dir
+        }
+    } else {
+        env::temp_dir()
+    }
+}

crates/pg_fs/src/lib.rs

@@ -0,0 +1,8 @@
+//! # pg_fs
+
+mod dir;
+mod path;
+
+pub use dir::ensure_cache_dir;
+pub use path::PgLspPath;
+

crates/pg_base_db/src/path.rs → crates/pg_fs/src/path.rs

@@ -1,6 +1,6 @@
 use std::{ops::Deref, path::PathBuf};
 
-#[derive(Debug, Clone, Eq, Hash, PartialEq)]
+#[derive(Debug, Clone, Eq, Hash, PartialEq, PartialOrd, Ord)]
 pub struct PgLspPath {
     path: PathBuf,
 }
@@ -20,3 +20,4 @@ impl PgLspPath {
         }
     }
 }
+

crates/pg_lsp/Cargo.toml

@@ -25,6 +25,7 @@ text-size = "1.1.1"
 line_index.workspace = true
 
 pg_hover.workspace = true
+pg_fs.workspace = true
 pg_completions.workspace = true
 pg_inlay_hints.workspace = true
 pg_commands.workspace = true

crates/pg_lsp/src/utils.rs

@@ -5,7 +5,7 @@ pub mod to_proto;
 use std::path::PathBuf;
 
 use lsp_types;
-use pg_base_db::PgLspPath;
+use pg_fs::PgLspPath;
 
 /// Convert a `lsp_types::Url` to a `PgLspPath`.
 pub(crate) fn file_path(url: &lsp_types::Url) -> PgLspPath {

crates/pg_lsp/src/utils/line_index_ext.rs

@@ -54,7 +54,8 @@ impl LineIndexExt for LineIndex {
 
 #[cfg(test)]
 mod tests {
-    use pg_base_db::{Document, PgLspPath};
+    use pg_base_db::Document;
+    use pg_fs::PgLspPath;
     use text_size::{TextRange, TextSize};
 
     use crate::utils::line_index_ext::LineIndexExt;

crates/pg_workspace/Cargo.toml

@@ -10,6 +10,7 @@ async-std = "1.12.0"
 sqlx = { version = "0.7.3", features = [ "runtime-async-std", "tls-rustls", "postgres", "json" ] }
 
 pg_base_db.workspace =  true
+pg_fs.workspace =  true
 pg_diagnostics.workspace =  true
 pg_query_ext.workspace =  true
 pg_lint.workspace =  true

crates/pg_workspace/src/lib.rs

@@ -7,7 +7,8 @@ use std::sync::{RwLock, RwLockWriteGuard};
 
 use dashmap::{DashMap, DashSet};
 use lint::Linter;
-use pg_base_db::{Document, DocumentChange, PgLspPath, StatementRef};
+use pg_base_db::{Document, DocumentChange, StatementRef};
+use pg_fs::PgLspPath;
 use pg_query::PgQueryParser;
 use pg_schema_cache::SchemaCache;
 use sqlx::PgPool;
@@ -184,7 +185,8 @@ mod tests {
     use pg_diagnostics::Diagnostic;
     use text_size::{TextRange, TextSize};
 
-    use crate::{PgLspPath, Workspace};
+    use crate::Workspace;
+    use pg_fs::PgLspPath;
 
     #[test]
     fn test_apply_change() {