Cache workspace pkgs so we don't walk the file system each workspace symbol request

1 files changed, 52 insertions, 36 deletions

diff --git a/src/server/workspace_symbols.odin b/src/server/workspace_symbols.odin
index a45fba5..c48ffad 100644
--- a/src/server/workspace_symbols.odin
+++ b/src/server/workspace_symbols.odin
@@ -1,16 +1,24 @@
 package server
 
-
 import "core:fmt"
 import "core:log"
 import "core:os"
 import "core:path/filepath"
 import "core:strings"
+import "core:time"
 
 import "src:common"
 
 dir_blacklist :: []string{"node_modules", ".git"}
 
+WorkspaceCache :: struct {
+	time:      time.Time,
+	pkgs:      [dynamic]string,
+}
+
+@(thread_local, private = "file")
+cache: WorkspaceCache
+
 @(private)
 walk_dir :: proc(info: os.File_Info, in_err: os.Errno, user_data: rawptr) -> (err: os.Error, skip_dir: bool) {
 	pkgs := cast(^[dynamic]string)user_data
@@ -31,50 +39,58 @@ walk_dir :: proc(info: os.File_Info, in_err: os.Errno, user_data: rawptr) -> (er
 }
 
 get_workspace_symbols :: proc(query: string) -> (workspace_symbols: []WorkspaceSymbol, ok: bool) {
-	workspace := common.config.workspace_folders[0]
-	uri := common.parse_uri(workspace.uri, context.temp_allocator) or_return
-	pkgs := make([dynamic]string, 0, context.temp_allocator)
-	symbols := make([dynamic]WorkspaceSymbol, 0, 100, context.temp_allocator)
-
-	filepath.walk(uri.path, walk_dir, &pkgs)
+	if time.since(cache.time) > 1 * time.Minute {
+		for pkg in cache.pkgs {
+			delete(pkg)
+		}
+		clear(&cache.pkgs)
+		workspace := common.config.workspace_folders[0]
+		uri := common.parse_uri(workspace.uri, context.temp_allocator) or_return
+		pkgs := make([dynamic]string, 0, context.temp_allocator)
 
-	_pkg: for pkg in pkgs {
-		matches, err := filepath.glob(fmt.tprintf("%v/*.odin", pkg), context.temp_allocator)
+		filepath.walk(uri.path, walk_dir, &pkgs)
 
-		if len(matches) == 0 {
-			continue
-		}
+		_pkg: for pkg in pkgs {
+			matches, err := filepath.glob(fmt.tprintf("%v/*.odin", pkg), context.temp_allocator)
 
-		for exclude_path in common.config.profile.exclude_path {
-			exclude_forward, _ := filepath.to_slash(exclude_path, context.temp_allocator)
+			if len(matches) == 0 {
+				continue
+			}
 
-			if exclude_forward[len(exclude_forward) - 2:] == "**" {
-				lower_pkg := strings.to_lower(pkg)
-				lower_exclude := strings.to_lower(exclude_forward[:len(exclude_forward) - 3])
-				if strings.contains(lower_pkg, lower_exclude) {
-					continue _pkg
-				}
-			} else {
-				lower_pkg := strings.to_lower(pkg)
-				lower_exclude := strings.to_lower(exclude_forward)
-				if lower_pkg == lower_exclude {
-					continue _pkg
+			for exclude_path in common.config.profile.exclude_path {
+				exclude_forward, _ := filepath.to_slash(exclude_path, context.temp_allocator)
+
+				if exclude_forward[len(exclude_forward) - 2:] == "**" {
+					lower_pkg := strings.to_lower(pkg)
+					lower_exclude := strings.to_lower(exclude_forward[:len(exclude_forward) - 3])
+					if strings.contains(lower_pkg, lower_exclude) {
+						continue _pkg
+					}
+				} else {
+					lower_pkg := strings.to_lower(pkg)
+					lower_exclude := strings.to_lower(exclude_forward)
+					if lower_pkg == lower_exclude {
+						continue _pkg
+					}
 				}
 			}
-		}
 
-		try_build_package(pkg)
-
-		if results, ok := fuzzy_search(query, {pkg}, "", resolve_fields = true); ok {
-			for result in results {
-				symbol := WorkspaceSymbol {
-					name = result.symbol.name,
-					location = {range = result.symbol.range, uri = result.symbol.uri},
-					kind = symbol_kind_to_type(result.symbol.type),
-				}
+			try_build_package(pkg)
+			append(&cache.pkgs, strings.clone(pkg, context.allocator))
+		}
+		cache.time = time.now()
+	}
 
-				append(&symbols, symbol)
+	symbols := make([dynamic]WorkspaceSymbol, 0, 100, context.temp_allocator)
+	if results, ok := fuzzy_search(query, cache.pkgs[:], "", resolve_fields = false); ok {
+		for result in results {
+			symbol := WorkspaceSymbol {
+				name = result.symbol.name,
+				location = {range = result.symbol.range, uri = result.symbol.uri},
+				kind = symbol_kind_to_type(result.symbol.type),
 			}
+
+			append(&symbols, symbol)
 		}
 	}