284 lines
18 KiB
Zig
284 lines
18 KiB
Zig
const std = @import("std");
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const headerPkg = @import("header");
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const builtin = @import("builtin");
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const suffix = if (builtin.os.tag == .windows) ".exe" else "";
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const allocator = std.heap.page_allocator;
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const initialize_msg =
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\\{"processId":6896,"clientInfo":{"name":"vscode","version":"1.46.1"},"rootPath":null,"rootUri":null,"capabilities":{"workspace":{"applyEdit":true,"workspaceEdit":{"documentChanges":true,"resourceOperations":["create","rename","delete"],"failureHandling":"textOnlyTransactional"},"didChangeConfiguration":{"dynamicRegistration":true},"didChangeWatchedFiles":{"dynamicRegistration":true},"symbol":{"dynamicRegistration":true,"symbolKind":{"valueSet":[1,2,3,4,5,6,7,8,9,10,11,12,13,14,15,16,17,18,19,20,21,22,23,24,25,26]},"tagSupport":{"valueSet":[1]}},"executeCommand":{"dynamicRegistration":true},"configuration":true,"workspaceFolders":true},"textDocument":{"publishDiagnostics":{"relatedInformation":true,"versionSupport":false,"tagSupport":{"valueSet":[1,2]},"complexDiagnosticCodeSupport":true},"synchronization":{"dynamicRegistration":true,"willSave":true,"willSaveWaitUntil":true,"didSave":true},"completion":{"dynamicRegistration":true,"contextSupport":true,"completionItem":{"snippetSupport":true,"commitCharactersSupport":true,"documentationFormat":["markdown","plaintext"],"deprecatedSupport":true,"preselectSupport":true,"tagSupport":{"valueSet":[1]},"insertReplaceSupport":true},"completionItemKind":{"valueSet":[1,2,3,4,5,6,7,8,9,10,11,12,13,14,15,16,17,18,19,20,21,22,23,24,25]}},"hover":{"dynamicRegistration":true,"contentFormat":["markdown","plaintext"]},"signatureHelp":{"dynamicRegistration":true,"signatureInformation":{"documentationFormat":["markdown","plaintext"],"parameterInformation":{"labelOffsetSupport":true}},"contextSupport":true},"definition":{"dynamicRegistration":true,"linkSupport":true},"references":{"dynamicRegistration":true},"documentHighlight":{"dynamicRegistration":true},"documentSymbol":{"dynamicRegistration":true,"symbolKind":{"valueSet":[1,2,3,4,5,6,7,8,9,10,11,12,13,14,15,16,17,18,19,20,21,22,23,24,25,26]},"hierarchicalDocumentSymbolSupport":true,"tagSupport":{"valueSet":[1]}},"codeAction":{"dynamicRegistration":true,"isPreferredSupport":true,"codeActionLiteralSupport":{"codeActionKind":{"valueSet":["","quickfix","refactor","refactor.extract","refactor.inline","refactor.rewrite","source","source.organizeImports"]}}},"codeLens":{"dynamicRegistration":true},"formatting":{"dynamicRegistration":true},"rangeFormatting":{"dynamicRegistration":true},"onTypeFormatting":{"dynamicRegistration":true},"rename":{"dynamicRegistration":true,"prepareSupport":true},"documentLink":{"dynamicRegistration":true,"tooltipSupport":true},"typeDefinition":{"dynamicRegistration":true,"linkSupport":true},"implementation":{"dynamicRegistration":true,"linkSupport":true},"colorProvider":{"dynamicRegistration":true},"foldingRange":{"dynamicRegistration":true,"rangeLimit":5000,"lineFoldingOnly":true},"declaration":{"dynamicRegistration":true,"linkSupport":true},"selectionRange":{"dynamicRegistration":true},"semanticTokens":{"dynamicRegistration":true,"tokenTypes":["comment","keyword","number","regexp","operator","namespace","type","struct","class","interface","enum","typeParameter","function","member","macro","variable","parameter","property","label"],"tokenModifiers":["declaration","documentation","static","abstract","deprecated","readonly"]}},"window":{"workDoneProgress":true}},"trace":"off","workspaceFolders":[{"uri":"file://./tests", "name":"root"}]}
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;
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const initialize_msg_offs =
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\\{"processId":6896,"clientInfo":{"name":"vscode","version":"1.46.1"},"rootPath":null,"rootUri":null,"capabilities":{"offsetEncoding":["utf-16", "utf-8"],"workspace":{"applyEdit":true,"workspaceEdit":{"documentChanges":true,"resourceOperations":["create","rename","delete"],"failureHandling":"textOnlyTransactional"},"didChangeConfiguration":{"dynamicRegistration":true},"didChangeWatchedFiles":{"dynamicRegistration":true},"symbol":{"dynamicRegistration":true,"symbolKind":{"valueSet":[1,2,3,4,5,6,7,8,9,10,11,12,13,14,15,16,17,18,19,20,21,22,23,24,25,26]},"tagSupport":{"valueSet":[1]}},"executeCommand":{"dynamicRegistration":true},"configuration":true,"workspaceFolders":true},"textDocument":{"publishDiagnostics":{"relatedInformation":true,"versionSupport":false,"tagSupport":{"valueSet":[1,2]},"complexDiagnosticCodeSupport":true},"synchronization":{"dynamicRegistration":true,"willSave":true,"willSaveWaitUntil":true,"didSave":true},"completion":{"dynamicRegistration":true,"contextSupport":true,"completionItem":{"snippetSupport":true,"commitCharactersSupport":true,"documentationFormat":["markdown","plaintext"],"deprecatedSupport":true,"preselectSupport":true,"tagSupport":{"valueSet":[1]},"insertReplaceSupport":true},"completionItemKind":{"valueSet":[1,2,3,4,5,6,7,8,9,10,11,12,13,14,15,16,17,18,19,20,21,22,23,24,25]}},"hover":{"dynamicRegistration":true,"contentFormat":["markdown","plaintext"]},"signatureHelp":{"dynamicRegistration":true,"signatureInformation":{"documentationFormat":["markdown","plaintext"],"parameterInformation":{"labelOffsetSupport":true}},"contextSupport":true},"definition":{"dynamicRegistration":true,"linkSupport":true},"references":{"dynamicRegistration":true},"documentHighlight":{"dynamicRegistration":true},"documentSymbol":{"dynamicRegistration":true,"symbolKind":{"valueSet":[1,2,3,4,5,6,7,8,9,10,11,12,13,14,15,16,17,18,19,20,21,22,23,24,25,26]},"hierarchicalDocumentSymbolSupport":true,"tagSupport":{"valueSet":[1]}},"codeAction":{"dynamicRegistration":true,"isPreferredSupport":true,"codeActionLiteralSupport":{"codeActionKind":{"valueSet":["","quickfix","refactor","refactor.extract","refactor.inline","refactor.rewrite","source","source.organizeImports"]}}},"codeLens":{"dynamicRegistration":true},"formatting":{"dynamicRegistration":true},"rangeFormatting":{"dynamicRegistration":true},"onTypeFormatting":{"dynamicRegistration":true},"rename":{"dynamicRegistration":true,"prepareSupport":true},"documentLink":{"dynamicRegistration":true,"tooltipSupport":true},"typeDefinition":{"dynamicRegistration":true,"linkSupport":true},"implementation":{"dynamicRegistration":true,"linkSupport":true},"colorProvider":{"dynamicRegistration":true},"foldingRange":{"dynamicRegistration":true,"rangeLimit":5000,"lineFoldingOnly":true},"declaration":{"dynamicRegistration":true,"linkSupport":true},"selectionRange":{"dynamicRegistration":true},"semanticTokens":{"dynamicRegistration":true,"tokenTypes":["comment","keyword","number","regexp","operator","namespace","type","struct","class","interface","enum","typeParameter","function","member","macro","variable","parameter","property","label"],"tokenModifiers":["declaration","documentation","static","abstract","deprecated","readonly"]}},"window":{"workDoneProgress":true}},"trace":"off","workspaceFolders":null}
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;
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const Server = struct {
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process: *std.ChildProcess,
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request_id: u32 = 1,
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fn start(initialization: []const u8, expect: ?[]const u8) !Server {
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var server = Server{ .process = try startZls() };
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try server.request("initialize", initialization, expect);
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try server.request("initialized", "{}", null);
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return server;
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}
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fn request(
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self: *Server,
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method: []const u8,
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params: []const u8,
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expect: ?[]const u8,
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) !void {
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self.request_id += 1;
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const req = try std.fmt.allocPrint(allocator,
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\\{{"jsonrpc":"2.0","id":{},"method":"{s}","params":{s}}}
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, .{ self.request_id, method, params });
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const to_server = self.process.stdin.?.writer();
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try to_server.print("Content-Length: {}\r\n\r\n", .{req.len});
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try to_server.writeAll(req);
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const expected = expect orelse return;
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var from_server = self.process.stdout.?.reader();
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while (true) {
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const header = headerPkg.readRequestHeader(allocator, from_server) catch |err| {
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switch (err) {
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error.EndOfStream => break,
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else => return err,
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}
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};
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defer header.deinit(allocator);
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var response_bytes = try allocator.alloc(u8, header.content_length);
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defer allocator.free(response_bytes);
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if ((try from_server.readAll(response_bytes)) != header.content_length) {
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return error.InvalidResponse;
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}
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// std.debug.print("{s}\n", .{resonse_bytes});
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const json_fmt = "{\"jsonrpc\":\"2.0\",\"id\":";
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if (!std.mem.startsWith(u8, response_bytes, json_fmt)) {
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try extractError(response_bytes);
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continue;
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}
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const rest = response_bytes[json_fmt.len..];
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const id_end = std.mem.indexOfScalar(u8, rest, ',') orelse return error.InvalidResponse;
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const id = try std.fmt.parseInt(u32, rest[0..id_end], 10);
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if (id != self.request_id) {
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continue;
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}
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const result = ",\"result\":";
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const msg = rest[id_end + result.len .. rest.len - 1];
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if (std.mem.eql(u8, msg, expected)) {
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return;
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} else {
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const mismatch = std.mem.indexOfDiff(u8, expected, msg) orelse 0;
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std.debug.print("==> Expected:\n{s}\n==> Got: (Mismatch in position {})\n{s}\n", .{ expected, mismatch, msg });
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return error.InvalidResponse;
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}
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}
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}
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fn extractError(msg: []const u8) !void {
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const log_request =
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\\"method":"window/logMessage","params":{"type":
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;
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if (std.mem.indexOf(u8, msg, log_request)) |log_msg| {
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const rest = msg[log_msg + log_request.len ..];
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const level = rest[0];
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if (level <= '2') {
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std.debug.print("{s}\n", .{rest[13 .. rest.len - 3]});
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if (level <= '1') {
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return error.ServerError;
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}
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}
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}
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}
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fn shutdown(self: *Server) void {
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self.request("shutdown", "{}", null) catch @panic("Could not send shutdown request");
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waitNoError(self.process) catch @panic("Server error");
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self.process.deinit();
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}
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};
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fn startZls() !*std.ChildProcess {
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std.debug.print("\n", .{});
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var process = try std.ChildProcess.init(&[_][]const u8{"zig-out/bin/zls" ++ suffix}, allocator);
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process.stdin_behavior = .Pipe;
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process.stdout_behavior = .Pipe;
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process.stderr_behavior = .Pipe; //std.ChildProcess.StdIo.Inherit;
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process.spawn() catch |err| {
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std.debug.print("Failed to spawn zls process, error: {}\n", .{err});
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return err;
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};
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return process;
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}
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fn waitNoError(process: *std.ChildProcess) !void {
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const stderr = std.io.getStdErr().writer();
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const err_in = process.stderr.?.reader();
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var buf: [4096]u8 = undefined;
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while (true) {
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const line = err_in.readUntilDelimiterOrEof(&buf, '\n') catch |err| switch (err) {
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error.StreamTooLong => {
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std.debug.print("skipping very long line\n", .{});
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continue;
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},
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else => return err,
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} orelse break;
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if (std.mem.startsWith(u8, line, "[debug")) continue;
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try stderr.writeAll(line);
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try stderr.writeByte('\n');
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}
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const result = try process.wait();
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switch (result) {
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.Exited => |code| if (code == 0) {
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return;
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},
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else => {},
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}
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return error.ShutdownWithError;
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}
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test "Open file, ask for semantic tokens" {
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var server = try Server.start(initialize_msg, null);
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defer server.shutdown();
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try server.request("textDocument/didOpen",
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\\{"textDocument":{"uri":"file://./tests/test.zig","languageId":"zig","version":420,"text":"const std = @import(\"std\");"}}
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, null);
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try server.request("textDocument/semanticTokens/full",
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\\{"textDocument":{"uri":"file://./tests/test.zig"}}
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,
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\\{"data":[0,0,5,7,0,0,6,3,0,33,0,4,1,11,0,0,2,7,12,0,0,8,5,9,0]}
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);
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}
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test "Request completion in an empty file" {
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var server = try Server.start(initialize_msg, null);
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defer server.shutdown();
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try server.request("textDocument/didOpen",
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\\{"jsonrpc":"2.0","method":"textDocument/didOpen","params":{"textDocument":{"uri":"file:///test.zig","languageId":"zig","version":420,"text":""}}}
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, null);
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try server.request("textDocument/completion",
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\\{"textDocument":{"uri":"file:///test.zig"}, "position":{"line":0,"character":0}}
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, null);
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}
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test "Request completion with no trailing whitespace" {
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var server = try Server.start(initialize_msg, null);
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// FIXME: The last `server.request` below results in the server pipe being broken
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// causing this shutdown to trigger `SIGPIPE`
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//defer server.shutdown();
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try server.request("textDocument/didOpen",
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\\{"textDocument":{"uri":"file:///test.zig","languageId":"zig","version":420,"text":"const std = @import(\"std\");\nc"}}
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, null);
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try server.request("textDocument/completion",
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\\{"textDocument":{"uri":"file:///test.zig"}, "position":{"line":1,"character":1}}
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,
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\\{"isIncomplete":false,"items":[{"label":"std","kind":21,"textEdit":null,"filterText":null,"insertText":"std","insertTextFormat":1,"detail":"const std = @import(\"std\")","documentation":null}]}
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);
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}
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test "Encoded space in file name and usingnamespace on non-existing symbol" {
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var server = try Server.start(initialize_msg, null);
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// FIXME: The last `server.request` below results in the server pipe being broken
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// causing this shutdown to trigger `SIGPIPE`
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//defer server.shutdown();
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try server.request("textDocument/didOpen",
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\\{"textDocument":{"uri":"file:///%20test.zig","languageId":"zig","version":420,"text":"usingnamespace a.b;\nb."}}
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, null);
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try server.request("textDocument/completion",
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\\{"textDocument":{"uri":"file:///%20test.zig"}, "position":{"line":1,"character":2}}
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,
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\\{"isIncomplete":false,"items":[]}
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);
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}
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test "Self-referential definition" {
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var server = try Server.start(initialize_msg, null);
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// FIXME: The last `server.request` below results in the server pipe being broken
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// causing this shutdown to trigger `SIGPIPE`
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//defer server.shutdown();
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try server.request("textDocument/didOpen",
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\\{"textDocument":{"uri":"file:///test.zig","languageId":"zig","version":420,"text":"const h = h(0);\nc"}}
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, null);
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try server.request("textDocument/completion",
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\\{"textDocument":{"uri":"file:///test.zig"}, "position":{"line":1,"character":1}}
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,
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\\{"isIncomplete":false,"items":[{"label":"h","kind":21,"textEdit":null,"filterText":null,"insertText":"h","insertTextFormat":1,"detail":"const h = h(0)","documentation":null}]}
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);
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}
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test "Missing return type" {
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var server = try Server.start(initialize_msg, null);
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// FIXME: The last `server.request` below results in the server pipe being broken
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// causing this shutdown to trigger `SIGPIPE`
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//defer server.shutdown();
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try server.request("textDocument/didOpen",
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\\{"textDocument":{"uri":"file:///test.zig","languageId":"zig","version":420,"text":"fn w() {}\nc"}}
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, null);
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try server.request("textDocument/completion",
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\\{"textDocument":{"uri":"file:///test.zig"}, "position":{"line":1,"character":1}}
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,
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\\{"isIncomplete":false,"items":[{"label":"w","kind":3,"textEdit":null,"filterText":null,"insertText":"w","insertTextFormat":1,"detail":"fn","documentation":null}]}
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);
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}
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test "Pointer and optional deref" {
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var server = try Server.start(initialize_msg, null);
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// FIXME: The last `server.request` below results in the server pipe being broken
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// causing this shutdown to trigger `SIGPIPE`
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//defer server.shutdown();
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try server.request("textDocument/didOpen",
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\\{"textDocument":{"uri":"file:///test.zig","languageId":"zig","version":420,"text":"var value: ?struct { data: i32 = 5 } = null;const ptr = &value;\nconst a = ptr.*.?."}}
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, null);
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try server.request("textDocument/completion",
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\\{"textDocument":{"uri":"file:///test.zig"}, "position":{"line":1,"character":18}}
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,
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\\{"isIncomplete":false,"items":[{"label":"data","kind":5,"textEdit":null,"filterText":null,"insertText":"data","insertTextFormat":1,"detail":"data: i32 = 5","documentation":null}]}
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);
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}
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test "Request utf-8 offset encoding" {
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var server = try Server.start(initialize_msg_offs,
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\\{"offsetEncoding":"utf-8","capabilities":{"signatureHelpProvider":{"triggerCharacters":["("],"retriggerCharacters":[","]},"textDocumentSync":1,"renameProvider":true,"completionProvider":{"resolveProvider":false,"triggerCharacters":[".",":","@"]},"documentHighlightProvider":false,"hoverProvider":true,"codeActionProvider":false,"declarationProvider":true,"definitionProvider":true,"typeDefinitionProvider":true,"implementationProvider":false,"referencesProvider":true,"documentSymbolProvider":true,"colorProvider":false,"documentFormattingProvider":true,"documentRangeFormattingProvider":false,"foldingRangeProvider":false,"selectionRangeProvider":false,"workspaceSymbolProvider":false,"rangeProvider":false,"documentProvider":true,"workspace":{"workspaceFolders":{"supported":false,"changeNotifications":false}},"semanticTokensProvider":{"full":true,"range":false,"legend":{"tokenTypes":["type","parameter","variable","enumMember","field","errorTag","function","keyword","comment","string","number","operator","builtin","label","keywordLiteral"],"tokenModifiers":["namespace","struct","enum","union","opaque","declaration","async","documentation","generic"]}}},"serverInfo":{"name":"zls","version":"0.1.0"}}
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);
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server.shutdown();
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}
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// not fixed yet!
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// test "Self-referential import" {
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// var server = try Server.start(initialize_msg, null);
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// defer server.shutdown();
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// try server.request("textDocument/didOpen",
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// \\{"textDocument":{"uri":"file:///test.zig","languageId":"zig","version":420,"text":"const a = @import(\"test.zig\").a;\nc"}}
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// , null);
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// try server.request("textDocument/completion",
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// \\{"textDocument":{"uri":"file:///test.zig"}, "position":{"line":1,"character":1}}
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// ,
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// \\{"isIncomplete":false,"items":[]}
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// );
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// }
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