const std = @import("std"); pub const Reader = struct { const Self = @This(); pub const ReadError = error{EOF}; buf: []u8, remain: []u8, allocator: *std.mem.Allocator, pub fn init(buf: []u8, allocator: *std.mem.Allocator) Reader { return Reader{ .buf = buf, .remain = buf, .allocator = allocator, }; } pub fn read(this: *Self, count: usize) ![]u8 { const read_count = std.math.min(count, this.remain.len); if (read_count < count) { return error.EOF; } var slice = this.remain[0..read_count]; this.remain = this.remain[read_count..]; return slice; } pub fn readAs(this: *Self, comptime T: type) !T { if (!std.meta.trait.hasUniqueRepresentation(T)) { @compileError(@typeName(T) ++ " must have unique representation."); } return std.mem.bytesAsValue(T, try this.read(@sizeOf(T))); } pub fn readByte(this: *Self) !u8 { return (try this.read(1))[0]; } pub fn readEnum(this: *Self, comptime Enum: type) !Enum { const E = error{ /// An integer was read, but it did not match any of the tags in the supplied enum. InvalidValue, }; const type_info = @typeInfo(Enum).Enum; const tag = try this.readInt(type_info.tag_type); inline for (std.meta.fields(Enum)) |field| { if (tag == field.value) { return @field(Enum, field.name); } } return E.InvalidValue; } pub fn readArray(this: *Self, comptime T: type) ![]const T { const length = try this.readInt(u32); if (length == 0) { return &([_]T{}); } switch (T) { u8 => { return try this.read(length); }, u16, u32, i8, i16, i32 => { return std.mem.readIntSliceNative(T, this.read(length * @sizeOf(T))); }, []const u8 => { var i: u32 = 0; var array = try this.allocator.alloc([]const u8, length); while (i < length) : (i += 1) { array[i] = try this.readArray(u8); } return array; }, else => { switch (@typeInfo(T)) { .Struct => |Struct| { switch (Struct.layout) { .Packed => { const sizeof = @sizeOf(T); var slice = try this.read(sizeof * length); return std.mem.bytesAsSlice(T, slice); }, else => {}, } }, .Enum => |type_info| { const enum_values = try this.read(length * @sizeOf(type_info.tag_type)); return @ptrCast([*]T, enum_values.ptr)[0..length]; }, else => {}, } var i: u32 = 0; var array = try this.allocator.alloc(T, length); while (i < length) : (i += 1) { array[i] = try this.readValue(T); } return array; }, } } pub fn readByteArray(this: *Self) ![]u8 { const length = try this.readInt(u32); if (length == 0) { return &([_]u8{}); } return try this.read(@intCast(usize, length)); } pub fn readInt(this: *Self, comptime T: type) !T { var slice = try this.read(@sizeOf(T)); return std.mem.readIntSliceNative(T, slice); } pub fn readBool(this: *Self) !bool { return (try this.readByte()) > 0; } pub fn readValue(this: *Self, comptime T: type) !T { switch (T) { bool => { return try this.readBool(); }, u8 => { return try this.readByte(); }, []const u8 => { return try this.readArray(u8); }, []const []const u8 => { return try this.readArray([]const u8); }, []u8 => { return try this.readArray([]u8); }, u16, u32, i8, i16, i32 => { return std.mem.readIntSliceNative(T, try this.read(@sizeOf(T))); }, else => { switch (@typeInfo(T)) { .Struct => |Struct| { switch (Struct.layout) { .Packed => { const sizeof = @sizeOf(T); var slice = try this.read(sizeof); return @ptrCast(*T, slice[0..sizeof]).*; }, else => {}, } }, .Enum => |type_info| { return try this.readEnum(T); }, else => {}, } return try T.decode(this); }, } @compileError("Invalid type passed to readValue"); } }; pub fn Writer(comptime WritableStream: type) type { return struct { const Self = @This(); writable: WritableStream, pub fn init(writable: WritableStream) Self { return Self{ .writable = writable }; } pub fn write(this: *Self, bytes: anytype) !void { _ = try this.writable.write(bytes); } pub fn writeByte(this: *Self, byte: u8) !void { _ = try this.writable.write(&[1]u8{byte}); } pub fn writeInt(this: *Self, int: anytype) !void { try this.write(std.mem.asBytes(&int)); } pub fn writeFieldID(this: *Self, comptime id: comptime_int) !void { try this.writeByte(id); } pub fn writeEnum(this: *Self, val: anytype) !void { try this.writeInt(@enumToInt(val)); } pub fn writeValue(this: *Self, slice: anytype) !void { switch (@TypeOf(slice)) { []u16, []u32, []i16, []i32, []i8, []const u16, []const u32, []const i16, []const i32, []const i8, => { try this.writeArray(@TypeOf(slice), slice); }, []u8, []const u8 => { try this.writeArray(u8, slice); }, u8 => { try this.write(slice); }, u16, u32, i16, i32, i8 => { try this.write(std.mem.asBytes(slice)); }, else => { try slice.encode(this); }, } } pub fn writeArray(this: *Self, comptime T: type, slice: anytype) !void { try this.writeInt(@truncate(u32, slice.len)); switch (T) { u8 => { try this.write(slice); }, u16, u32, i16, i32, i8 => { try this.write(std.mem.asBytes(slice)); }, []u8, []u16, []u32, []i16, []i32, []i8, []const u8, []const u16, []const u32, []const i16, []const i32, []const i8, => { for (slice) |num_slice| { try this.writeArray(std.meta.Child(@TypeOf(num_slice)), num_slice); } }, else => { for (slice) |val| { try val.encode(this); } }, } } pub fn endMessage(this: *Self) !void { try this.writeByte(0); } }; } pub const ByteWriter = Writer(*std.io.FixedBufferStream([]u8)); pub const FileWriter = Writer(std.fs.File); pub const Api = struct { pub const Loader = enum(u8) { _none, /// jsx jsx, /// js js, /// ts ts, /// tsx tsx, /// css css, /// file file, /// json json, _, pub fn jsonStringify(self: *const @This(), opts: anytype, o: anytype) !void { return try std.json.stringify(@tagName(self), opts, o); } }; pub const ResolveMode = enum(u8) { _none, /// disable disable, /// lazy lazy, /// dev dev, /// bundle bundle, _, pub fn jsonStringify(self: *const @This(), opts: anytype, o: anytype) !void { return try std.json.stringify(@tagName(self), opts, o); } }; pub const Platform = enum(u8) { _none, /// browser browser, /// node node, /// speedy speedy, _, pub fn jsonStringify(self: *const @This(), opts: anytype, o: anytype) !void { return try std.json.stringify(@tagName(self), opts, o); } }; pub const JsxRuntime = enum(u8) { _none, /// automatic automatic, /// classic classic, _, pub fn jsonStringify(self: *const @This(), opts: anytype, o: anytype) !void { return try std.json.stringify(@tagName(self), opts, o); } }; pub const Jsx = struct { /// factory factory: []const u8, /// runtime runtime: JsxRuntime, /// fragment fragment: []const u8, /// development development: bool = false, /// import_source import_source: []const u8, /// react_fast_refresh react_fast_refresh: bool = false, pub fn decode(reader: anytype) anyerror!Jsx { var this = std.mem.zeroes(Jsx); this.factory = try reader.readValue([]const u8); this.runtime = try reader.readValue(JsxRuntime); this.fragment = try reader.readValue([]const u8); this.development = try reader.readValue(bool); this.import_source = try reader.readValue([]const u8); this.react_fast_refresh = try reader.readValue(bool); return this; } pub fn encode(this: *const @This(), writer: anytype) anyerror!void { try writer.writeValue(this.factory); try writer.writeEnum(this.runtime); try writer.writeValue(this.fragment); try writer.writeInt(@intCast(u8, @boolToInt(this.development))); try writer.writeValue(this.import_source); try writer.writeInt(@intCast(u8, @boolToInt(this.react_fast_refresh))); } }; pub const StringPointer = packed struct { /// offset offset: u32 = 0, /// length length: u32 = 0, pub fn decode(reader: anytype) anyerror!StringPointer { var this = std.mem.zeroes(StringPointer); this.offset = try reader.readValue(u32); this.length = try reader.readValue(u32); return this; } pub fn encode(this: *const @This(), writer: anytype) anyerror!void { try writer.writeInt(this.offset); try writer.writeInt(this.length); } }; pub const JavascriptBundledModule = struct { /// path path: StringPointer, /// code code: StringPointer, /// package_id package_id: u32 = 0, /// id id: u32 = 0, /// path_extname_length path_extname_length: u8 = 0, pub fn decode(reader: anytype) anyerror!JavascriptBundledModule { var this = std.mem.zeroes(JavascriptBundledModule); this.path = try reader.readValue(StringPointer); this.code = try reader.readValue(StringPointer); this.package_id = try reader.readValue(u32); this.id = try reader.readValue(u32); this.path_extname_length = try reader.readValue(u8); return this; } pub fn encode(this: *const @This(), writer: anytype) anyerror!void { try writer.writeValue(this.path); try writer.writeValue(this.code); try writer.writeInt(this.package_id); try writer.writeInt(this.id); try writer.writeInt(this.path_extname_length); } }; pub const JavascriptBundledPackage = struct { /// name name: StringPointer, /// version version: StringPointer, /// hash hash: u32 = 0, /// modules_offset modules_offset: u32 = 0, /// modules_length modules_length: u32 = 0, pub fn decode(reader: anytype) anyerror!JavascriptBundledPackage { var this = std.mem.zeroes(JavascriptBundledPackage); this.name = try reader.readValue(StringPointer); this.version = try reader.readValue(StringPointer); this.hash = try reader.readValue(u32); this.modules_offset = try reader.readValue(u32); this.modules_length = try reader.readValue(u32); return this; } pub fn encode(this: *const @This(), writer: anytype) anyerror!void { try writer.writeValue(this.name); try writer.writeValue(this.version); try writer.writeInt(this.hash); try writer.writeInt(this.modules_offset); try writer.writeInt(this.modules_length); } }; pub const JavascriptBundle = struct { /// modules modules: []const JavascriptBundledModule, /// packages packages: []const JavascriptBundledPackage, /// etag etag: []const u8, /// generated_at generated_at: u32 = 0, /// app_package_json_dependencies_hash app_package_json_dependencies_hash: []const u8, /// import_from_name import_from_name: []const u8, /// manifest_string manifest_string: []const u8, pub fn decode(reader: anytype) anyerror!JavascriptBundle { var this = std.mem.zeroes(JavascriptBundle); this.modules = try reader.readArray(JavascriptBundledModule); this.packages = try reader.readArray(JavascriptBundledPackage); this.etag = try reader.readArray(u8); this.generated_at = try reader.readValue(u32); this.app_package_json_dependencies_hash = try reader.readArray(u8); this.import_from_name = try reader.readArray(u8); this.manifest_string = try reader.readArray(u8); return this; } pub fn encode(this: *const @This(), writer: anytype) anyerror!void { try writer.writeArray(JavascriptBundledModule, this.modules); try writer.writeArray(JavascriptBundledPackage, this.packages); try writer.writeArray(u8, this.etag); try writer.writeInt(this.generated_at); try writer.writeArray(u8, this.app_package_json_dependencies_hash); try writer.writeArray(u8, this.import_from_name); try writer.writeArray(u8, this.manifest_string); } }; pub const JavascriptBundleContainer = struct { /// bundle_format_version bundle_format_version: ?u32 = null, /// bundle bundle: ?JavascriptBundle = null, /// code_length code_length: ?u32 = null, pub fn decode(reader: anytype) anyerror!JavascriptBundleContainer { var this = std.mem.zeroes(JavascriptBundleContainer); while(true) { switch (try reader.readByte()) { 0 => { return this; }, 1 => { this.bundle_format_version = try reader.readValue(u32); }, 2 => { this.bundle = try reader.readValue(JavascriptBundle); }, 3 => { this.code_length = try reader.readValue(u32); }, else => { return error.InvalidMessage; }, } } unreachable; } pub fn encode(this: *const @This(), writer: anytype) anyerror!void { if (this.bundle_format_version) |bundle_format_version| { try writer.writeFieldID(1); try writer.writeInt(bundle_format_version); } if (this.bundle) |bundle| { try writer.writeFieldID(2); try writer.writeValue(bundle); } if (this.code_length) |code_length| { try writer.writeFieldID(3); try writer.writeInt(code_length); } try writer.endMessage(); } }; pub const ScanDependencyMode = enum(u8) { _none, /// app app, /// all all, _, pub fn jsonStringify(self: *const @This(), opts: anytype, o: anytype) !void { return try std.json.stringify(@tagName(self), opts, o); } }; pub const ModuleImportType = enum(u8) { _none, /// import import, /// require require, _, pub fn jsonStringify(self: *const @This(), opts: anytype, o: anytype) !void { return try std.json.stringify(@tagName(self), opts, o); } }; pub const ModuleImportRecord = struct { /// kind kind: ModuleImportType, /// path path: []const u8, /// dynamic dynamic: bool = false, pub fn decode(reader: anytype) anyerror!ModuleImportRecord { var this = std.mem.zeroes(ModuleImportRecord); this.kind = try reader.readValue(ModuleImportType); this.path = try reader.readValue([]const u8); this.dynamic = try reader.readValue(bool); return this; } pub fn encode(this: *const @This(), writer: anytype) anyerror!void { try writer.writeEnum(this.kind); try writer.writeValue(this.path); try writer.writeInt(@intCast(u8, @boolToInt(this.dynamic))); } }; pub const Module = struct { /// path path: []const u8, /// imports imports: []const ModuleImportRecord, pub fn decode(reader: anytype) anyerror!Module { var this = std.mem.zeroes(Module); this.path = try reader.readValue([]const u8); this.imports = try reader.readArray(ModuleImportRecord); return this; } pub fn encode(this: *const @This(), writer: anytype) anyerror!void { try writer.writeValue(this.path); try writer.writeArray(ModuleImportRecord, this.imports); } }; pub const StringMap = struct { /// keys keys: []const []const u8, /// values values: []const []const u8, pub fn decode(reader: anytype) anyerror!StringMap { var this = std.mem.zeroes(StringMap); this.keys = try reader.readArray([]const u8); this.values = try reader.readArray([]const u8); return this; } pub fn encode(this: *const @This(), writer: anytype) anyerror!void { try writer.writeArray([]const u8, this.keys); try writer.writeArray([]const u8, this.values); } }; pub const LoaderMap = struct { /// extensions extensions: []const []const u8, /// loaders loaders: []const Loader, pub fn decode(reader: anytype) anyerror!LoaderMap { var this = std.mem.zeroes(LoaderMap); this.extensions = try reader.readArray([]const u8); this.loaders = try reader.readArray(Loader); return this; } pub fn encode(this: *const @This(), writer: anytype) anyerror!void { try writer.writeArray([]const u8, this.extensions); try writer.writeArray(Loader, this.loaders); } }; pub const FrameworkConfig = struct { /// entry_point entry_point: ?[]const u8 = null, pub fn decode(reader: anytype) anyerror!FrameworkConfig { var this = std.mem.zeroes(FrameworkConfig); while(true) { switch (try reader.readByte()) { 0 => { return this; }, 1 => { this.entry_point = try reader.readValue([]const u8); }, else => { return error.InvalidMessage; }, } } unreachable; } pub fn encode(this: *const @This(), writer: anytype) anyerror!void { if (this.entry_point) |entry_point| { try writer.writeFieldID(1); try writer.writeValue(entry_point); } try writer.endMessage(); } }; pub const RouteConfig = struct { /// dir dir: ?[]const u8 = null, /// extensions extensions: []const []const u8, pub fn decode(reader: anytype) anyerror!RouteConfig { var this = std.mem.zeroes(RouteConfig); while(true) { switch (try reader.readByte()) { 0 => { return this; }, 1 => { this.dir = try reader.readValue([]const u8); }, 2 => { this.extensions = try reader.readArray([]const u8); }, else => { return error.InvalidMessage; }, } } unreachable; } pub fn encode(this: *const @This(), writer: anytype) anyerror!void { if (this.dir) |dir| { try writer.writeFieldID(1); try writer.writeValue(dir); } if (this.extensions) |extensions| { try writer.writeFieldID(2); try writer.writeArray([]const u8, extensions); } try writer.endMessage(); } }; pub const TransformOptions = struct { /// jsx jsx: ?Jsx = null, /// tsconfig_override tsconfig_override: ?[]const u8 = null, /// resolve resolve: ?ResolveMode = null, /// public_url public_url: ?[]const u8 = null, /// absolute_working_dir absolute_working_dir: ?[]const u8 = null, /// define define: ?StringMap = null, /// preserve_symlinks preserve_symlinks: ?bool = null, /// entry_points entry_points: []const []const u8, /// write write: ?bool = null, /// inject inject: []const []const u8, /// output_dir output_dir: ?[]const u8 = null, /// external external: []const []const u8, /// loaders loaders: ?LoaderMap = null, /// main_fields main_fields: []const []const u8, /// platform platform: ?Platform = null, /// serve serve: ?bool = null, /// extension_order extension_order: []const []const u8, /// public_dir public_dir: ?[]const u8 = null, /// only_scan_dependencies only_scan_dependencies: ?ScanDependencyMode = null, /// generate_node_module_bundle generate_node_module_bundle: ?bool = null, /// node_modules_bundle_path node_modules_bundle_path: ?[]const u8 = null, /// framework framework: ?FrameworkConfig = null, /// router router: ?RouteConfig = null, pub fn decode(reader: anytype) anyerror!TransformOptions { var this = std.mem.zeroes(TransformOptions); while(true) { switch (try reader.readByte()) { 0 => { return this; }, 1 => { this.jsx = try reader.readValue(Jsx); }, 2 => { this.tsconfig_override = try reader.readValue([]const u8); }, 3 => { this.resolve = try reader.readValue(ResolveMode); }, 4 => { this.public_url = try reader.readValue([]const u8); }, 5 => { this.absolute_working_dir = try reader.readValue([]const u8); }, 6 => { this.define = try reader.readValue(StringMap); }, 7 => { this.preserve_symlinks = try reader.readValue(bool); }, 8 => { this.entry_points = try reader.readArray([]const u8); }, 9 => { this.write = try reader.readValue(bool); }, 10 => { this.inject = try reader.readArray([]const u8); }, 11 => { this.output_dir = try reader.readValue([]const u8); }, 12 => { this.external = try reader.readArray([]const u8); }, 13 => { this.loaders = try reader.readValue(LoaderMap); }, 14 => { this.main_fields = try reader.readArray([]const u8); }, 15 => { this.platform = try reader.readValue(Platform); }, 16 => { this.serve = try reader.readValue(bool); }, 17 => { this.extension_order = try reader.readArray([]const u8); }, 18 => { this.public_dir = try reader.readValue([]const u8); }, 19 => { this.only_scan_dependencies = try reader.readValue(ScanDependencyMode); }, 20 => { this.generate_node_module_bundle = try reader.readValue(bool); }, 21 => { this.node_modules_bundle_path = try reader.readValue([]const u8); }, 22 => { this.framework = try reader.readValue(FrameworkConfig); }, 23 => { this.router = try reader.readValue(RouteConfig); }, else => { return error.InvalidMessage; }, } } unreachable; } pub fn encode(this: *const @This(), writer: anytype) anyerror!void { if (this.jsx) |jsx| { try writer.writeFieldID(1); try writer.writeValue(jsx); } if (this.tsconfig_override) |tsconfig_override| { try writer.writeFieldID(2); try writer.writeValue(tsconfig_override); } if (this.resolve) |resolve| { try writer.writeFieldID(3); try writer.writeEnum(resolve); } if (this.public_url) |public_url| { try writer.writeFieldID(4); try writer.writeValue(public_url); } if (this.absolute_working_dir) |absolute_working_dir| { try writer.writeFieldID(5); try writer.writeValue(absolute_working_dir); } if (this.define) |define| { try writer.writeFieldID(6); try writer.writeValue(define); } if (this.preserve_symlinks) |preserve_symlinks| { try writer.writeFieldID(7); try writer.writeInt(@intCast(u8, @boolToInt(preserve_symlinks))); } if (this.entry_points) |entry_points| { try writer.writeFieldID(8); try writer.writeArray([]const u8, entry_points); } if (this.write) |write| { try writer.writeFieldID(9); try writer.writeInt(@intCast(u8, @boolToInt(write))); } if (this.inject) |inject| { try writer.writeFieldID(10); try writer.writeArray([]const u8, inject); } if (this.output_dir) |output_dir| { try writer.writeFieldID(11); try writer.writeValue(output_dir); } if (this.external) |external| { try writer.writeFieldID(12); try writer.writeArray([]const u8, external); } if (this.loaders) |loaders| { try writer.writeFieldID(13); try writer.writeValue(loaders); } if (this.main_fields) |main_fields| { try writer.writeFieldID(14); try writer.writeArray([]const u8, main_fields); } if (this.platform) |platform| { try writer.writeFieldID(15); try writer.writeEnum(platform); } if (this.serve) |serve| { try writer.writeFieldID(16); try writer.writeInt(@intCast(u8, @boolToInt(serve))); } if (this.extension_order) |extension_order| { try writer.writeFieldID(17); try writer.writeArray([]const u8, extension_order); } if (this.public_dir) |public_dir| { try writer.writeFieldID(18); try writer.writeValue(public_dir); } if (this.only_scan_dependencies) |only_scan_dependencies| { try writer.writeFieldID(19); try writer.writeEnum(only_scan_dependencies); } if (this.generate_node_module_bundle) |generate_node_module_bundle| { try writer.writeFieldID(20); try writer.writeInt(@intCast(u8, @boolToInt(generate_node_module_bundle))); } if (this.node_modules_bundle_path) |node_modules_bundle_path| { try writer.writeFieldID(21); try writer.writeValue(node_modules_bundle_path); } if (this.framework) |framework| { try writer.writeFieldID(22); try writer.writeValue(framework); } if (this.router) |router| { try writer.writeFieldID(23); try writer.writeValue(router); } try writer.endMessage(); } }; pub const FileHandle = struct { /// path path: []const u8, /// size size: u32 = 0, /// fd fd: u32 = 0, pub fn decode(reader: anytype) anyerror!FileHandle { var this = std.mem.zeroes(FileHandle); this.path = try reader.readValue([]const u8); this.size = try reader.readValue(u32); this.fd = try reader.readValue(u32); return this; } pub fn encode(this: *const @This(), writer: anytype) anyerror!void { try writer.writeValue(this.path); try writer.writeInt(this.size); try writer.writeInt(this.fd); } }; pub const Transform = struct { /// handle handle: ?FileHandle = null, /// path path: ?[]const u8 = null, /// contents contents: []const u8, /// loader loader: ?Loader = null, /// options options: ?TransformOptions = null, pub fn decode(reader: anytype) anyerror!Transform { var this = std.mem.zeroes(Transform); while(true) { switch (try reader.readByte()) { 0 => { return this; }, 1 => { this.handle = try reader.readValue(FileHandle); }, 2 => { this.path = try reader.readValue([]const u8); }, 3 => { this.contents = try reader.readArray(u8); }, 4 => { this.loader = try reader.readValue(Loader); }, 5 => { this.options = try reader.readValue(TransformOptions); }, else => { return error.InvalidMessage; }, } } unreachable; } pub fn encode(this: *const @This(), writer: anytype) anyerror!void { if (this.handle) |handle| { try writer.writeFieldID(1); try writer.writeValue(handle); } if (this.path) |path| { try writer.writeFieldID(2); try writer.writeValue(path); } if (this.contents) |contents| { try writer.writeFieldID(3); try writer.writeArray(u8, contents); } if (this.loader) |loader| { try writer.writeFieldID(4); try writer.writeEnum(loader); } if (this.options) |options| { try writer.writeFieldID(5); try writer.writeValue(options); } try writer.endMessage(); } }; pub const TransformResponseStatus = enum(u32) { _none, /// success success, /// fail fail, _, pub fn jsonStringify(self: *const @This(), opts: anytype, o: anytype) !void { return try std.json.stringify(@tagName(self), opts, o); } }; pub const OutputFile = struct { /// data data: []const u8, /// path path: []const u8, pub fn decode(reader: anytype) anyerror!OutputFile { var this = std.mem.zeroes(OutputFile); this.data = try reader.readArray(u8); this.path = try reader.readValue([]const u8); return this; } pub fn encode(this: *const @This(), writer: anytype) anyerror!void { try writer.writeArray(u8, this.data); try writer.writeValue(this.path); } }; pub const TransformResponse = struct { /// status status: TransformResponseStatus, /// files files: []const OutputFile, /// errors errors: []const Message, pub fn decode(reader: anytype) anyerror!TransformResponse { var this = std.mem.zeroes(TransformResponse); this.status = try reader.readValue(TransformResponseStatus); this.files = try reader.readArray(OutputFile); this.errors = try reader.readArray(Message); return this; } pub fn encode(this: *const @This(), writer: anytype) anyerror!void { try writer.writeEnum(this.status); try writer.writeArray(OutputFile, this.files); try writer.writeArray(Message, this.errors); } }; pub const MessageKind = enum(u32) { _none, /// err err, /// warn warn, /// note note, /// debug debug, _, pub fn jsonStringify(self: *const @This(), opts: anytype, o: anytype) !void { return try std.json.stringify(@tagName(self), opts, o); } }; pub const Location = struct { /// file file: []const u8, /// namespace namespace: []const u8, /// line line: i32 = 0, /// column column: i32 = 0, /// line_text line_text: []const u8, /// suggestion suggestion: []const u8, /// offset offset: u32 = 0, pub fn decode(reader: anytype) anyerror!Location { var this = std.mem.zeroes(Location); this.file = try reader.readValue([]const u8); this.namespace = try reader.readValue([]const u8); this.line = try reader.readValue(i32); this.column = try reader.readValue(i32); this.line_text = try reader.readValue([]const u8); this.suggestion = try reader.readValue([]const u8); this.offset = try reader.readValue(u32); return this; } pub fn encode(this: *const @This(), writer: anytype) anyerror!void { try writer.writeValue(this.file); try writer.writeValue(this.namespace); try writer.writeInt(this.line); try writer.writeInt(this.column); try writer.writeValue(this.line_text); try writer.writeValue(this.suggestion); try writer.writeInt(this.offset); } }; pub const MessageData = struct { /// text text: ?[]const u8 = null, /// location location: ?Location = null, pub fn decode(reader: anytype) anyerror!MessageData { var this = std.mem.zeroes(MessageData); while(true) { switch (try reader.readByte()) { 0 => { return this; }, 1 => { this.text = try reader.readValue([]const u8); }, 2 => { this.location = try reader.readValue(Location); }, else => { return error.InvalidMessage; }, } } unreachable; } pub fn encode(this: *const @This(), writer: anytype) anyerror!void { if (this.text) |text| { try writer.writeFieldID(1); try writer.writeValue(text); } if (this.location) |location| { try writer.writeFieldID(2); try writer.writeValue(location); } try writer.endMessage(); } }; pub const Message = struct { /// kind kind: MessageKind, /// data data: MessageData, /// notes notes: []const MessageData, pub fn decode(reader: anytype) anyerror!Message { var this = std.mem.zeroes(Message); this.kind = try reader.readValue(MessageKind); this.data = try reader.readValue(MessageData); this.notes = try reader.readArray(MessageData); return this; } pub fn encode(this: *const @This(), writer: anytype) anyerror!void { try writer.writeEnum(this.kind); try writer.writeValue(this.data); try writer.writeArray(MessageData, this.notes); } }; pub const Log = struct { /// warnings warnings: u32 = 0, /// errors errors: u32 = 0, /// msgs msgs: []const Message, pub fn decode(reader: anytype) anyerror!Log { var this = std.mem.zeroes(Log); this.warnings = try reader.readValue(u32); this.errors = try reader.readValue(u32); this.msgs = try reader.readArray(Message); return this; } pub fn encode(this: *const @This(), writer: anytype) anyerror!void { try writer.writeInt(this.warnings); try writer.writeInt(this.errors); try writer.writeArray(Message, this.msgs); } }; pub const Reloader = enum(u8) { _none, /// disable disable, /// live live, /// fast_refresh fast_refresh, _, pub fn jsonStringify(self: *const @This(), opts: anytype, o: anytype) !void { return try std.json.stringify(@tagName(self), opts, o); } }; pub const WebsocketMessageKind = enum(u8) { _none, /// welcome welcome, /// file_change_notification file_change_notification, /// build_success build_success, /// build_fail build_fail, /// manifest_success manifest_success, /// manifest_fail manifest_fail, _, pub fn jsonStringify(self: *const @This(), opts: anytype, o: anytype) !void { return try std.json.stringify(@tagName(self), opts, o); } }; pub const WebsocketCommandKind = enum(u8) { _none, /// build build, /// manifest manifest, _, pub fn jsonStringify(self: *const @This(), opts: anytype, o: anytype) !void { return try std.json.stringify(@tagName(self), opts, o); } }; pub const WebsocketMessage = struct { /// timestamp timestamp: u32 = 0, /// kind kind: WebsocketMessageKind, pub fn decode(reader: anytype) anyerror!WebsocketMessage { var this = std.mem.zeroes(WebsocketMessage); this.timestamp = try reader.readValue(u32); this.kind = try reader.readValue(WebsocketMessageKind); return this; } pub fn encode(this: *const @This(), writer: anytype) anyerror!void { try writer.writeInt(this.timestamp); try writer.writeEnum(this.kind); } }; pub const WebsocketMessageWelcome = struct { /// epoch epoch: u32 = 0, /// javascriptReloader javascript_reloader: Reloader, pub fn decode(reader: anytype) anyerror!WebsocketMessageWelcome { var this = std.mem.zeroes(WebsocketMessageWelcome); this.epoch = try reader.readValue(u32); this.javascript_reloader = try reader.readValue(Reloader); return this; } pub fn encode(this: *const @This(), writer: anytype) anyerror!void { try writer.writeInt(this.epoch); try writer.writeEnum(this.javascript_reloader); } }; pub const WebsocketMessageFileChangeNotification = struct { /// id id: u32 = 0, /// loader loader: Loader, pub fn decode(reader: anytype) anyerror!WebsocketMessageFileChangeNotification { var this = std.mem.zeroes(WebsocketMessageFileChangeNotification); this.id = try reader.readValue(u32); this.loader = try reader.readValue(Loader); return this; } pub fn encode(this: *const @This(), writer: anytype) anyerror!void { try writer.writeInt(this.id); try writer.writeEnum(this.loader); } }; pub const WebsocketCommand = struct { /// kind kind: WebsocketCommandKind, /// timestamp timestamp: u32 = 0, pub fn decode(reader: anytype) anyerror!WebsocketCommand { var this = std.mem.zeroes(WebsocketCommand); this.kind = try reader.readValue(WebsocketCommandKind); this.timestamp = try reader.readValue(u32); return this; } pub fn encode(this: *const @This(), writer: anytype) anyerror!void { try writer.writeEnum(this.kind); try writer.writeInt(this.timestamp); } }; pub const WebsocketCommandBuild = packed struct { /// id id: u32 = 0, pub fn decode(reader: anytype) anyerror!WebsocketCommandBuild { var this = std.mem.zeroes(WebsocketCommandBuild); this.id = try reader.readValue(u32); return this; } pub fn encode(this: *const @This(), writer: anytype) anyerror!void { try writer.writeInt(this.id); } }; pub const WebsocketCommandManifest = packed struct { /// id id: u32 = 0, pub fn decode(reader: anytype) anyerror!WebsocketCommandManifest { var this = std.mem.zeroes(WebsocketCommandManifest); this.id = try reader.readValue(u32); return this; } pub fn encode(this: *const @This(), writer: anytype) anyerror!void { try writer.writeInt(this.id); } }; pub const WebsocketMessageBuildSuccess = struct { /// id id: u32 = 0, /// from_timestamp from_timestamp: u32 = 0, /// loader loader: Loader, /// module_path module_path: []const u8, /// blob_length blob_length: u32 = 0, pub fn decode(reader: anytype) anyerror!WebsocketMessageBuildSuccess { var this = std.mem.zeroes(WebsocketMessageBuildSuccess); this.id = try reader.readValue(u32); this.from_timestamp = try reader.readValue(u32); this.loader = try reader.readValue(Loader); this.module_path = try reader.readValue([]const u8); this.blob_length = try reader.readValue(u32); return this; } pub fn encode(this: *const @This(), writer: anytype) anyerror!void { try writer.writeInt(this.id); try writer.writeInt(this.from_timestamp); try writer.writeEnum(this.loader); try writer.writeValue(this.module_path); try writer.writeInt(this.blob_length); } }; pub const WebsocketMessageBuildFailure = struct { /// id id: u32 = 0, /// from_timestamp from_timestamp: u32 = 0, /// loader loader: Loader, /// module_path module_path: []const u8, /// log log: Log, pub fn decode(reader: anytype) anyerror!WebsocketMessageBuildFailure { var this = std.mem.zeroes(WebsocketMessageBuildFailure); this.id = try reader.readValue(u32); this.from_timestamp = try reader.readValue(u32); this.loader = try reader.readValue(Loader); this.module_path = try reader.readValue([]const u8); this.log = try reader.readValue(Log); return this; } pub fn encode(this: *const @This(), writer: anytype) anyerror!void { try writer.writeInt(this.id); try writer.writeInt(this.from_timestamp); try writer.writeEnum(this.loader); try writer.writeValue(this.module_path); try writer.writeValue(this.log); } }; pub const DependencyManifest = struct { /// ids ids: []const u32, pub fn decode(reader: anytype) anyerror!DependencyManifest { var this = std.mem.zeroes(DependencyManifest); this.ids = try reader.readArray(u32); return this; } pub fn encode(this: *const @This(), writer: anytype) anyerror!void { try writer.writeArray(u32, this.ids); } }; pub const FileList = struct { /// ptrs ptrs: []const StringPointer, /// files files: []const u8, pub fn decode(reader: anytype) anyerror!FileList { var this = std.mem.zeroes(FileList); this.ptrs = try reader.readArray(StringPointer); this.files = try reader.readValue([]const u8); return this; } pub fn encode(this: *const @This(), writer: anytype) anyerror!void { try writer.writeArray(StringPointer, this.ptrs); try writer.writeValue(this.files); } }; pub const WebsocketMessageResolveIDs = struct { /// id id: []const u32, /// list list: FileList, pub fn decode(reader: anytype) anyerror!WebsocketMessageResolveIDs { var this = std.mem.zeroes(WebsocketMessageResolveIDs); this.id = try reader.readArray(u32); this.list = try reader.readValue(FileList); return this; } pub fn encode(this: *const @This(), writer: anytype) anyerror!void { try writer.writeArray(u32, this.id); try writer.writeValue(this.list); } }; pub const WebsocketCommandResolveIDs = struct { /// ptrs ptrs: []const StringPointer, /// files files: []const u8, pub fn decode(reader: anytype) anyerror!WebsocketCommandResolveIDs { var this = std.mem.zeroes(WebsocketCommandResolveIDs); this.ptrs = try reader.readArray(StringPointer); this.files = try reader.readValue([]const u8); return this; } pub fn encode(this: *const @This(), writer: anytype) anyerror!void { try writer.writeArray(StringPointer, this.ptrs); try writer.writeValue(this.files); } }; pub const WebsocketMessageManifestSuccess = struct { /// id id: u32 = 0, /// module_path module_path: []const u8, /// loader loader: Loader, /// manifest manifest: DependencyManifest, pub fn decode(reader: anytype) anyerror!WebsocketMessageManifestSuccess { var this = std.mem.zeroes(WebsocketMessageManifestSuccess); this.id = try reader.readValue(u32); this.module_path = try reader.readValue([]const u8); this.loader = try reader.readValue(Loader); this.manifest = try reader.readValue(DependencyManifest); return this; } pub fn encode(this: *const @This(), writer: anytype) anyerror!void { try writer.writeInt(this.id); try writer.writeValue(this.module_path); try writer.writeEnum(this.loader); try writer.writeValue(this.manifest); } }; pub const WebsocketMessageManifestFailure = struct { /// id id: u32 = 0, /// from_timestamp from_timestamp: u32 = 0, /// loader loader: Loader, /// log log: Log, pub fn decode(reader: anytype) anyerror!WebsocketMessageManifestFailure { var this = std.mem.zeroes(WebsocketMessageManifestFailure); this.id = try reader.readValue(u32); this.from_timestamp = try reader.readValue(u32); this.loader = try reader.readValue(Loader); this.log = try reader.readValue(Log); return this; } pub fn encode(this: *const @This(), writer: anytype) anyerror!void { try writer.writeInt(this.id); try writer.writeInt(this.from_timestamp); try writer.writeEnum(this.loader); try writer.writeValue(this.log); } }; }; const ExamplePackedStruct = packed struct { len: u32 = 0, offset: u32 = 0, pub fn encode(this: *const ExamplePackedStruct, writer: anytype) !void { try writer.write(std.mem.asBytes(this)); } pub fn decode(reader: anytype) !ExamplePackedStruct { return try reader.readAs(ExamplePackedStruct); } }; const ExampleStruct = struct { name: []const u8 = "", age: u32 = 0, pub fn encode(this: *const ExampleStruct, writer: anytype) !void { try writer.writeArray(u8, this.name); try writer.writeInt(this.age); } pub fn decode(reader: anytype) !ExampleStruct { var this = std.mem.zeroes(ExampleStruct); this.name = try reader.readArray(u8); this.age = try reader.readInt(u32); return this; } }; const EnumValue = enum(u8) { hey, hi, heyopoo }; const ExampleMessage = struct { examples: ?[]ExampleStruct = &([_]ExampleStruct{}), pack: ?[]ExamplePackedStruct = &([_]ExamplePackedStruct{}), hey: ?u8 = 0, hey16: ?u16 = 0, hey32: ?u16 = 0, heyi32: ?i32 = 0, heyi16: ?i16 = 0, heyi8: ?i8 = 0, boolean: ?bool = null, heyooo: ?EnumValue = null, pub fn encode(this: *const ExampleMessage, writer: anytype) !void { if (this.examples) |examples| { try writer.writeFieldID(1); try writer.writeArray(ExampleStruct, examples); } if (this.pack) |pack| { try writer.writeFieldID(2); try writer.writeArray(ExamplePackedStruct, pack); } if (this.hey) |hey| { try writer.writeFieldID(3); try writer.writeInt(hey); } if (this.hey16) |hey16| { try writer.writeFieldID(4); try writer.writeInt(hey16); } if (this.hey32) |hey32| { try writer.writeFieldID(5); try writer.writeInt(hey32); } if (this.heyi32) |heyi32| { try writer.writeFieldID(6); try writer.writeInt(heyi32); } if (this.heyi16) |heyi16| { try writer.writeFieldID(7); try writer.writeInt(heyi16); } if (this.heyi8) |heyi8| { try writer.writeFieldID(8); try writer.writeInt(heyi8); } if (this.boolean) |boolean| { try writer.writeFieldID(9); try writer.writeInt(boolean); } if (this.heyooo) |heyoo| { try writer.writeFieldID(10); try writer.writeEnum(heyoo); } try writer.endMessage(); } pub fn decode(reader: anytype) !ExampleMessage { var this = std.mem.zeroes(ExampleMessage); while (true) { switch (try reader.readByte()) { 0 => { return this; }, 1 => { this.examples = try reader.readArray(std.meta.Child(@TypeOf(this.examples.?))); }, 2 => { this.pack = try reader.readArray(std.meta.Child(@TypeOf(this.pack.?))); }, 3 => { this.hey = try reader.readValue(@TypeOf(this.hey.?)); }, 4 => { this.hey16 = try reader.readValue(@TypeOf(this.hey16.?)); }, 5 => { this.hey32 = try reader.readValue(@TypeOf(this.hey32.?)); }, 6 => { this.heyi32 = try reader.readValue(@TypeOf(this.heyi32.?)); }, 7 => { this.heyi16 = try reader.readValue(@TypeOf(this.heyi16.?)); }, 8 => { this.heyi8 = try reader.readValue(@TypeOf(this.heyi8.?)); }, 9 => { this.boolean = try reader.readValue(@TypeOf(this.boolean.?)); }, 10 => { this.heyooo = try reader.readValue(@TypeOf(this.heyooo.?)); }, else => { return error.InvalidValue; }, } } return this; } }; test "ExampleMessage" { var base = std.mem.zeroes(ExampleMessage); base.hey = 1; var buf: [4096]u8 = undefined; var writable = std.io.fixedBufferStream(&buf); var writer = ByteWriter.init(writable); var examples = [_]ExamplePackedStruct{ .{ .len = 2, .offset = 5 }, .{ .len = 0, .offset = 10 }, }; var more_examples = [_]ExampleStruct{ .{ .name = "bacon", .age = 10 }, .{ .name = "slime", .age = 300 }, }; base.examples = &more_examples; base.pack = &examples; base.heyooo = EnumValue.hey; try base.encode(&writer); var reader = Reader.init(&buf, std.heap.c_allocator); var compare = try ExampleMessage.decode(&reader); try std.testing.expectEqual(base.hey orelse 255, 1); const cmp_pack = compare.pack.?; for (cmp_pack) |item, id| { try std.testing.expectEqual(item, examples[id]); } const cmp_ex = compare.examples.?; for (cmp_ex) |item, id| { try std.testing.expectEqualStrings(item.name, more_examples[id].name); try std.testing.expectEqual(item.age, more_examples[id].age); } try std.testing.expectEqual(cmp_pack[0].len, examples[0].len); try std.testing.expectEqual(base.heyooo, compare.heyooo); }