refactor(server): extract common languages parts

server/src/cache/cache.ts

@@ -0,0 +1,26 @@
+export class Cache<TKey, TValue> {
+    private readonly data: Map<TKey, TValue>
+
+    public constructor() {
+        this.data = new Map()
+    }
+
+    public cached(key: TKey, cb: () => TValue): TValue {
+        const cached = this.data.get(key)
+        if (cached !== undefined) {
+            return cached
+        }
+
+        const value = cb()
+        this.data.set(key, value)
+        return value
+    }
+
+    public clear(): void {
+        this.data.clear()
+    }
+
+    public get size(): number {
+        return this.data.size
+    }
+}

server/src/completion/CompletionItemAdditionalInformation.ts

@@ -0,0 +1,8 @@
+import {File} from "@server/psi/File"
+
+export interface CompletionItemAdditionalInformation {
+    readonly name: string | undefined
+    readonly file: File | undefined
+    readonly elementFile: File | undefined
+    readonly language: "tolk" | "func" | undefined
+}

server/src/completion/CompletionProvider.ts

@@ -0,0 +1,15 @@
+//  SPDX-License-Identifier: MIT
+//  Copyright © 2025 TON Studio
+import {CompletionResult} from "@server/completion/WeightedCompletionItem"
+
+export interface CompletionProvider<Ctx> {
+    isAvailable(ctx: Ctx): boolean
+
+    addCompletion(ctx: Ctx, result: CompletionResult): void
+}
+
+export interface AsyncCompletionProvider<Ctx> {
+    isAvailable(ctx: Ctx): boolean
+
+    addCompletion(ctx: Ctx, result: CompletionResult): Promise<void>
+}

server/src/files.ts

@@ -153,9 +153,6 @@ export const isTlbFile = (
     event?: lsp.TextDocumentChangeEvent<TextDocument>,
 ): boolean => event?.document.languageId === "tlb" || uri.endsWith(".tlb")
 
-// export function filePathToUri(filePath: string): string {
-//     return pathToFileURL(filePath).href
-// }
 export const filePathToUri = (filePath: string): string => {
     const url = pathToFileURL(filePath).toString()
     return url.replace(/c:/g, "c%3A").replace(/d:/g, "d%3A")

server/src/foldings/index.ts

@@ -0,0 +1,13 @@
+import type {Point} from "web-tree-sitter"
+import type * as lsp from "vscode-languageserver"
+import {FoldingRangeKind} from "vscode-languageserver-types"
+
+export function genericFolding(start: Point, end: Point): lsp.FoldingRange {
+    return {
+        kind: FoldingRangeKind.Region,
+        startLine: start.row,
+        endLine: end.row - 1,
+        startCharacter: end.column,
+        endCharacter: end.column,
+    }
+}

server/src/func-indexing-root.ts → server/src/indexing/indexing.ts

@@ -1,25 +1,23 @@
-//  SPDX-License-Identifier: MIT
-//  Copyright © 2025 TON Studio
-import * as path from "node:path"
-import {glob} from "glob"
-import {index} from "@server/languages/func/indexes"
 import {fileURLToPath} from "node:url"
-import {filePathToUri, findFuncFile} from "@server/files"
+import {glob} from "glob"
+import * as path from "node:path"
+import {filePathToUri} from "@server/files"
 
-export enum FuncIndexingRootKind {
+export enum IndexingRootKind {
     Stdlib = "stdlib",
     Workspace = "workspace",
 }
 
-export class FuncIndexingRoot {
-    public constructor(
+export abstract class IndexingRoot {
+    protected constructor(
         public root: string,
-        public kind: FuncIndexingRootKind,
+        public extensions: string[],
+        public kind: IndexingRootKind,
     ) {}
 
     public async index(): Promise<void> {
         const ignore =
-            this.kind === FuncIndexingRootKind.Stdlib
+            this.kind === IndexingRootKind.Stdlib
                 ? []
                 : [
                       ".git/**",
@@ -30,7 +28,11 @@ export class FuncIndexingRoot {
                   ]
 
         const rootDir = fileURLToPath(this.root)
-        const files = await glob("**/*.{fc,func}", {
+
+        const globPattern =
+            this.extensions.length === 1 ? this.extensions[0] : `{${this.extensions.join(",")}}`
+
+        const files = await glob(`**/*.${globPattern}`, {
             cwd: rootDir,
             ignore: ignore,
         })
@@ -41,8 +43,9 @@ export class FuncIndexingRoot {
             console.info("Indexing:", filePath)
             const absPath = path.join(rootDir, filePath)
             const uri = filePathToUri(absPath)
-            const file = await findFuncFile(uri)
-            index.addFile(uri, file, false)
+            await this.onFile(uri)
         }
     }
+
+    protected abstract onFile(uri: string): Promise<void>
 }

server/src/languages/fift/foldings/collect.ts

@@ -1,24 +1,13 @@
 //  SPDX-License-Identifier: MIT
 //  Copyright © 2025 TON Studio
-import {FoldingRange, FoldingRangeKind} from "vscode-languageserver-types"
+import {FoldingRange} from "vscode-languageserver-types"
 import {RecursiveVisitor} from "@server/visitor/visitor"
-import type {Point} from "web-tree-sitter"
-import type * as lsp from "vscode-languageserver"
 import {FiftFile} from "@server/languages/fift/psi/FiftFile"
+import {genericFolding} from "@server/foldings"
 
 export function provideFiftFoldingRanges(file: FiftFile): FoldingRange[] {
     const result: FoldingRange[] = []
 
-    const genericFolding = (start: Point, end: Point): lsp.FoldingRange => {
-        return {
-            kind: FoldingRangeKind.Region,
-            startLine: start.row,
-            endLine: end.row - 1,
-            startCharacter: end.column,
-            endCharacter: end.column,
-        }
-    }
-
     RecursiveVisitor.visit(file.rootNode, (n): boolean => {
         if (
             n.type === "program" ||

server/src/languages/fift/semantic-tokens/index.ts

@@ -2,34 +2,20 @@
 //  Copyright © 2025 TON Studio
 import type {SemanticTokens} from "vscode-languageserver"
 import {RecursiveVisitor} from "@server/visitor/visitor"
-import {SemanticTokensBuilder} from "vscode-languageserver/lib/common/semanticTokens"
 import {SemanticTokenTypes} from "vscode-languageserver-protocol"
-import type {Node as SyntaxNode} from "web-tree-sitter"
-import * as lsp from "vscode-languageserver"
 import {FiftReference} from "@server/languages/fift/psi/FiftReference"
 import {FiftFile} from "@server/languages/fift/psi/FiftFile"
+import {Tokens} from "@server/semantic/tokens"
 
 export function provideFiftSemanticTokens(
     file: FiftFile,
     settings: {
         enabled: boolean
     },
 ): SemanticTokens | null {
-    if (!settings.enabled) {
-        return null
-    }
-
-    const builder = new SemanticTokensBuilder()
+    if (!settings.enabled) return null
 
-    function pushToken(n: SyntaxNode, tokenType: lsp.SemanticTokenTypes): void {
-        builder.push(
-            n.startPosition.row,
-            n.startPosition.column,
-            n.endPosition.column - n.startPosition.column,
-            Object.keys(lsp.SemanticTokenTypes).indexOf(tokenType.toString()),
-            0,
-        )
-    }
+    const tokens = new Tokens()
 
     RecursiveVisitor.visit(file.rootNode, (node): boolean => {
         if (
@@ -41,7 +27,7 @@ export function provideFiftSemanticTokens(
         ) {
             const nameNode = node.childForFieldName("name")
             if (nameNode) {
-                pushToken(nameNode, SemanticTokenTypes.function)
+                tokens.node(nameNode, SemanticTokenTypes.function)
             }
         }
 
@@ -52,12 +38,15 @@ export function provideFiftSemanticTokens(
         ) {
             const def = FiftReference.resolve(node, file)
             if (def) {
-                pushToken(node, SemanticTokenTypes.function)
+                tokens.node(node, SemanticTokenTypes.function)
             }
         }
 
         return true
     })
 
-    return builder.build()
+    return {
+        resultId: Date.now().toString(),
+        data: tokens.result(),
+    }
 }

server/src/languages/func/cache.ts

@@ -1,45 +1,15 @@
 //  SPDX-License-Identifier: MIT
 //  Copyright © 2025 TON Core
 import type {NamedNode} from "@server/languages/func/psi/FuncNode"
+import {Cache} from "@server/cache/cache"
 
-export class Cache<TKey, TValue> {
-    private readonly data: Map<TKey, TValue>
-
-    public constructor() {
-        this.data = new Map()
-    }
-
-    public cached(key: TKey, cb: () => TValue): TValue {
-        const cached = this.data.get(key)
-        if (cached !== undefined) {
-            return cached
-        }
-
-        const value = cb()
-        this.data.set(key, value)
-        return value
-    }
-
-    public clear(): void {
-        this.data.clear()
-    }
-
-    public get size(): number {
-        return this.data.size
-    }
-}
-
-export class CacheManager {
-    public readonly resolveCache: Cache<number, NamedNode | null>
-
-    public constructor() {
-        this.resolveCache = new Cache()
-    }
+export class FuncCache {
+    public readonly resolveCache: Cache<number, NamedNode | null> = new Cache()
 
     public clear(): void {
         console.info(`Clearing caches (resolve: ${this.resolveCache.size})`)
         this.resolveCache.clear()
     }
 }
 
-export const FUNC_CACHE = new CacheManager()
+export const FUNC_CACHE = new FuncCache()

server/src/languages/func/completion/ReferenceCompletionProcessor.ts

@@ -12,19 +12,9 @@ import {
     TypeParameter,
 } from "@server/languages/func/psi/Decls"
 import {CompletionContext} from "./CompletionContext"
-import {
-    CompletionWeight,
-    WeightedCompletionItem,
-} from "@server/languages/func/completion/WeightedCompletionItem"
-import {FuncFile} from "@server/languages/func/psi/FuncFile"
+import {CompletionWeight, WeightedCompletionItem} from "@server/completion/WeightedCompletionItem"
 import {ResolveState} from "@server/psi/ResolveState"
-
-export interface CompletionItemAdditionalInformation {
-    readonly name: string | undefined
-    readonly file: FuncFile | undefined
-    readonly elementFile: FuncFile | undefined
-    readonly language: "tolk" | "func" | undefined
-}
+import {CompletionItemAdditionalInformation} from "@server/completion/CompletionItemAdditionalInformation"
 
 export class ReferenceCompletionProcessor implements ScopeProcessor {
     public constructor(private readonly ctx: CompletionContext) {}