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base.zig
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base.zig
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pub const js = @import("bun").JSC.C;
const std = @import("std");
const bun = @import("bun");
const string = bun.string;
const Output = bun.Output;
const Global = bun.Global;
const Environment = bun.Environment;
const strings = bun.strings;
const MutableString = bun.MutableString;
const stringZ = bun.stringZ;
const default_allocator = bun.default_allocator;
const C = bun.C;
const JavaScript = @import("./javascript.zig");
const ResolveError = JavaScript.ResolveError;
const BuildError = JavaScript.BuildError;
const JSC = @import("bun").JSC;
const WebCore = @import("./webcore.zig");
const Test = @import("./test/jest.zig");
const Fetch = WebCore.Fetch;
const Response = WebCore.Response;
const Request = WebCore.Request;
const Router = @import("./api/filesystem_router.zig");
const FetchEvent = WebCore.FetchEvent;
const IdentityContext = @import("../identity_context.zig").IdentityContext;
const uws = @import("bun").uws;
const Body = WebCore.Body;
const TaggedPointerTypes = @import("../tagged_pointer.zig");
const TaggedPointerUnion = TaggedPointerTypes.TaggedPointerUnion;
pub const ExceptionValueRef = [*c]js.JSValueRef;
pub const JSValueRef = js.JSValueRef;
fn ObjectPtrType(comptime Type: type) type {
if (Type == void) return Type;
return *Type;
}
pub const To = struct {
pub const JS = struct {
pub inline fn str(_: anytype, val: anytype) js.JSStringRef {
return js.JSStringCreateWithUTF8CString(val[0.. :0]);
}
pub fn functionWithCallback(
comptime ZigContextType: type,
zig: ObjectPtrType(ZigContextType),
name: js.JSStringRef,
ctx: js.JSContextRef,
comptime callback: fn (
obj: ObjectPtrType(ZigContextType),
ctx: js.JSContextRef,
function: js.JSObjectRef,
thisObject: js.JSObjectRef,
arguments: []const js.JSValueRef,
exception: js.ExceptionRef,
) js.JSValueRef,
) js.JSObjectRef {
var function = js.JSObjectMakeFunctionWithCallback(ctx, name, Callback(ZigContextType, callback).rfn);
std.debug.assert(js.JSObjectSetPrivate(
function,
JSPrivateDataPtr.init(zig).ptr(),
));
return function;
}
pub fn Finalize(
comptime ZigContextType: type,
comptime ctxfn: fn (
this: ObjectPtrType(ZigContextType),
) void,
) type {
return struct {
pub fn rfn(
object: js.JSObjectRef,
) callconv(.C) void {
return ctxfn(
GetJSPrivateData(ZigContextType, object) orelse return,
);
}
};
}
pub fn Constructor(
comptime ctxfn: fn (
ctx: js.JSContextRef,
function: js.JSObjectRef,
arguments: []const js.JSValueRef,
exception: js.ExceptionRef,
) js.JSValueRef,
) type {
return struct {
pub fn rfn(
ctx: js.JSContextRef,
function: js.JSObjectRef,
argumentCount: usize,
arguments: [*c]const js.JSValueRef,
exception: js.ExceptionRef,
) callconv(.C) js.JSValueRef {
return ctxfn(
ctx,
function,
if (arguments) |args| args[0..argumentCount] else &[_]js.JSValueRef{},
exception,
);
}
};
}
pub fn ConstructorCallback(
comptime ctxfn: fn (
ctx: js.JSContextRef,
function: js.JSObjectRef,
arguments: []const js.JSValueRef,
exception: js.ExceptionRef,
) js.JSValueRef,
) type {
return struct {
pub fn rfn(
ctx: js.JSContextRef,
function: js.JSObjectRef,
argumentCount: usize,
arguments: [*c]const js.JSValueRef,
exception: js.ExceptionRef,
) callconv(.C) js.JSValueRef {
return ctxfn(
ctx,
function,
if (arguments) |args| args[0..argumentCount] else &[_]js.JSValueRef{},
exception,
);
}
};
}
pub fn withType(comptime Type: type, value: Type, context: JSC.C.JSContextRef, exception: JSC.C.ExceptionRef) JSC.C.JSValueRef {
return withTypeClone(Type, value, context, exception, false);
}
pub fn withTypeClone(comptime Type: type, value: Type, context: JSC.C.JSContextRef, exception: JSC.C.ExceptionRef, clone: bool) JSC.C.JSValueRef {
if (comptime std.meta.trait.isNumber(Type)) {
return JSC.JSValue.jsNumberWithType(Type, value).asRef();
}
var zig_str: JSC.ZigString = undefined;
return switch (comptime Type) {
void => JSC.C.JSValueMakeUndefined(context),
bool => JSC.C.JSValueMakeBoolean(context, value),
[]const u8, [:0]const u8, [*:0]const u8, []u8, [:0]u8, [*:0]u8 => brk: {
zig_str = ZigString.init(value);
const val = zig_str.toValueAuto(context.ptr());
break :brk val.asObjectRef();
},
[]const PathString, []const []const u8, []const []u8, [][]const u8, [][:0]const u8, [][:0]u8 => {
if (value.len == 0)
return JSC.C.JSObjectMakeArray(context, 0, null, exception);
var stack_fallback = std.heap.stackFallback(512, bun.default_allocator);
var allocator = stack_fallback.get();
var zig_strings = allocator.alloc(ZigString, value.len) catch unreachable;
defer if (stack_fallback.fixed_buffer_allocator.end_index >= 511) allocator.free(zig_strings);
for (value) |path_string, i| {
if (comptime Type == []const PathString) {
zig_strings[i] = ZigString.init(path_string.slice());
} else {
zig_strings[i] = ZigString.init(path_string);
}
}
// there is a possible C ABI bug or something here when the ptr is null
// it should not be segfaulting but it is
// that's why we check at the top of this function
var array = JSC.JSValue.createStringArray(context.ptr(), zig_strings.ptr, zig_strings.len, clone).asObjectRef();
if (clone and value.len > 0) {
for (value) |path_string| {
if (comptime Type == []const PathString) {
bun.default_allocator.free(path_string.slice());
} else {
bun.default_allocator.free(path_string);
}
}
bun.default_allocator.free(value);
}
return array;
},
JSC.C.JSValueRef => value,
else => {
const Info: std.builtin.Type = comptime @typeInfo(Type);
if (comptime Info == .Enum) {
const Enum: std.builtin.Type.Enum = Info.Enum;
if (comptime !std.meta.trait.isNumber(Enum.tag_type)) {
zig_str = JSC.ZigString.init(@tagName(value));
return zig_str.toValue(context.ptr()).asObjectRef();
}
}
// Recursion can stack overflow here
if (comptime std.meta.trait.isSlice(Type)) {
const Child = std.meta.Child(Type);
const prefill = 32;
if (value.len <= prefill) {
var array: [prefill]JSC.C.JSValueRef = undefined;
var i: u8 = 0;
const len = @min(@intCast(u8, value.len), prefill);
while (i < len and exception.* == null) : (i += 1) {
array[i] = if (comptime Child == JSC.C.JSValueRef)
value[i]
else
To.JS.withType(Child, value[i], context, exception);
}
if (exception.* != null) {
return null;
}
// TODO: this function copies to a MarkedArgumentsBuffer
// That copy is unnecessary.
const obj = JSC.C.JSObjectMakeArray(context, len, &array, exception);
if (exception.* != null) {
return null;
}
return obj;
}
{
var array = bun.default_allocator.alloc(JSC.C.JSValueRef, value.len) catch unreachable;
defer bun.default_allocator.free(array);
var i: usize = 0;
while (i < value.len and exception.* == null) : (i += 1) {
array[i] = if (comptime Child == JSC.C.JSValueRef)
value[i]
else
To.JS.withType(Child, value[i], context, exception);
}
if (exception.* != null) {
return null;
}
// TODO: this function copies to a MarkedArgumentsBuffer
// That copy is unnecessary.
const obj = JSC.C.JSObjectMakeArray(context, value.len, array.ptr, exception);
if (exception.* != null) {
return null;
}
return obj;
}
}
if (comptime std.meta.trait.isZigString(Type)) {
zig_str = JSC.ZigString.init(value);
return zig_str.toValue(context.ptr()).asObjectRef();
}
if (comptime Info == .Pointer) {
const Child = comptime std.meta.Child(Type);
if (comptime std.meta.trait.isContainer(Child) and @hasDecl(Child, "Class") and @hasDecl(Child.Class, "isJavaScriptCoreClass")) {
return Child.Class.make(context, value);
}
}
if (comptime Info == .Struct) {
if (comptime @hasDecl(Type, "Class") and @hasDecl(Type.Class, "isJavaScriptCoreClass")) {
if (comptime !@hasDecl(Type, "finalize")) {
@compileError(std.fmt.comptimePrint("JSC class {s} must implement finalize to prevent memory leaks", .{Type.Class.name}));
}
if (comptime !@hasDecl(Type, "toJS")) {
var val = bun.default_allocator.create(Type) catch unreachable;
val.* = value;
return Type.Class.make(context, val);
}
}
}
if (comptime @hasDecl(Type, "toJS") and @typeInfo(@TypeOf(@field(Type, "toJS"))).Fn.params.len == 2) {
var val = bun.default_allocator.create(Type) catch unreachable;
val.* = value;
return val.toJS(context).asObjectRef();
}
const res = value.toJS(context, exception);
if (@TypeOf(res) == JSC.C.JSValueRef) {
return res;
} else if (@TypeOf(res) == JSC.JSValue) {
return res.asObjectRef();
}
},
};
}
pub fn PropertyGetter(
comptime Type: type,
) type {
return comptime fn (
this: ObjectPtrType(Type),
ctx: js.JSContextRef,
_: js.JSValueRef,
_: js.JSStringRef,
exception: js.ExceptionRef,
) js.JSValueRef;
}
pub fn Getter(comptime Type: type, comptime field: std.meta.FieldEnum(Type)) PropertyGetter(Type) {
return struct {
pub fn rfn(
this: ObjectPtrType(Type),
ctx: js.JSContextRef,
_: js.JSValueRef,
_: js.JSStringRef,
exception: js.ExceptionRef,
) js.JSValueRef {
return withType(std.meta.fieldInfo(Type, field).type, @field(this, @tagName(field)), ctx, exception);
}
}.rfn;
}
pub const JSC_C_Function = fn (
js.JSContextRef,
js.JSObjectRef,
js.JSObjectRef,
usize,
[*c]const js.JSValueRef,
js.ExceptionRef,
) callconv(.C) js.JSValueRef;
pub fn Callback(
comptime ZigContextType: type,
comptime ctxfn: fn (
obj: ObjectPtrType(ZigContextType),
ctx: js.JSContextRef,
function: js.JSObjectRef,
thisObject: js.JSObjectRef,
arguments: []const js.JSValueRef,
exception: js.ExceptionRef,
) js.JSValueRef,
) type {
return struct {
pub fn rfn(
ctx: js.JSContextRef,
function: js.JSObjectRef,
thisObject: js.JSObjectRef,
argumentCount: usize,
arguments: [*c]const js.JSValueRef,
exception: js.ExceptionRef,
) callconv(.C) js.JSValueRef {
if (comptime ZigContextType == anyopaque) {
return ctxfn(
js.JSObjectGetPrivate(function) orelse js.JSObjectGetPrivate(thisObject) orelse undefined,
ctx,
function,
thisObject,
if (arguments) |args| args[0..argumentCount] else &[_]js.JSValueRef{},
exception,
);
} else if (comptime ZigContextType == void) {
return ctxfn(
void{},
ctx,
function,
thisObject,
if (arguments) |args| args[0..argumentCount] else &[_]js.JSValueRef{},
exception,
);
} else {
return ctxfn(
GetJSPrivateData(ZigContextType, function) orelse GetJSPrivateData(ZigContextType, thisObject) orelse return js.JSValueMakeUndefined(ctx),
ctx,
function,
thisObject,
if (arguments) |args| args[0..argumentCount] else &[_]js.JSValueRef{},
exception,
);
}
}
};
}
};
};
pub const Properties = struct {
pub const UTF8 = struct {
pub var filepath: string = "filepath";
pub const module: string = "module";
pub const globalThis: string = "globalThis";
pub const exports: string = "exports";
pub const log: string = "log";
pub const debug: string = "debug";
pub const name: string = "name";
pub const info: string = "info";
pub const error_: string = "error";
pub const warn: string = "warn";
pub const console: string = "console";
pub const require: string = "require";
pub const description: string = "description";
pub const initialize_bundled_module: string = "$$m";
pub const load_module_function: string = "$lOaDuRcOdE$";
pub const window: string = "window";
pub const default: string = "default";
pub const include: string = "include";
pub const env: string = "env";
pub const GET = "GET";
pub const PUT = "PUT";
pub const POST = "POST";
pub const PATCH = "PATCH";
pub const HEAD = "HEAD";
pub const OPTIONS = "OPTIONS";
pub const navigate = "navigate";
pub const follow = "follow";
};
pub const Refs = struct {
pub var empty_string_ptr = [_]u8{0};
pub var empty_string: js.JSStringRef = undefined;
};
pub fn init() void {
Refs.empty_string = js.JSStringCreateWithUTF8CString(&Refs.empty_string_ptr);
}
};
const hasSetter = std.meta.trait.hasField("set");
const hasReadOnly = std.meta.trait.hasField("ro");
const hasFinalize = std.meta.trait.hasField("finalize");
const hasEnumerable = std.meta.trait.hasField("enumerable");
const hasTypeScriptField = std.meta.trait.hasField("ts");
fn hasTypeScript(comptime Type: type) bool {
if (hasTypeScriptField(Type)) {
return true;
}
return @hasDecl(Type, "ts");
}
fn getTypeScript(comptime Type: type, value: Type) d.ts.or_decl {
if (comptime !@hasDecl(Type, "ts") and !@hasField(Type, "ts")) {
return d.ts.or_decl{
.ts = .{ .name = @typeName(Type) },
};
}
if (comptime hasTypeScriptField(Type)) {
if (@TypeOf(value.ts) == d.ts.decl) {
return d.ts.or_decl{ .decl = value };
} else {
return d.ts.or_decl{ .ts = value.ts };
}
}
if (@TypeOf(Type.ts) == d.ts.decl) {
return d.ts.or_decl{ .decl = Type.ts };
} else {
return d.ts.or_decl{ .ts = value.ts };
}
}
pub const d = struct {
pub const ts = struct {
@"return": string = "unknown",
tsdoc: string = "",
name: string = "",
read_only: ?bool = null,
args: []const arg = &[_]arg{},
splat_args: bool = false,
pub const or_decl = union(Tag) {
ts: ts,
decl: decl,
pub const Tag = enum { ts, decl };
};
pub const decl = union(Tag) {
module: module,
class: class,
empty: u0,
pub const Tag = enum { module, class, empty };
};
pub const module = struct {
tsdoc: string = "",
read_only: ?bool = null,
path: string = "",
global: bool = false,
properties: []ts = &[_]ts{},
functions: []ts = &[_]ts{},
classes: []class = &[_]class{},
};
pub const class = struct {
name: string = "",
tsdoc: string = "",
@"return": string = "",
read_only: ?bool = null,
interface: bool = true,
default_export: bool = false,
properties: []ts = &[_]ts{},
functions: []ts = &[_]ts{},
pub const Printer = struct {
const indent_level = 2;
pub fn printIndented(comptime fmt: string, args: anytype, comptime indent: usize) string {
comptime var buf: string = "";
comptime buf = buf ++ " " ** indent;
return comptime buf ++ std.fmt.comptimePrint(fmt, args);
}
pub fn printVar(comptime property: d.ts, comptime indent: usize) string {
comptime var buf: string = "";
comptime buf = buf ++ " " ** indent;
comptime {
if (property.read_only orelse false) {
buf = buf ++ "readonly ";
}
buf = buf ++ "var ";
buf = buf ++ property.name;
buf = buf ++ ": ";
if (property.@"return".len > 0) {
buf = buf ++ property.@"return";
} else {
buf = buf ++ "any";
}
buf = buf ++ ";\n";
}
comptime {
if (property.tsdoc.len > 0) {
buf = printTSDoc(property.tsdoc, indent) ++ buf;
}
}
return buf;
}
pub fn printProperty(comptime property: d.ts, comptime indent: usize) string {
comptime var buf: string = "";
comptime buf = buf ++ " " ** indent;
comptime {
if (property.read_only orelse false) {
buf = buf ++ "readonly ";
}
buf = buf ++ property.name;
buf = buf ++ ": ";
if (property.@"return".len > 0) {
buf = buf ++ property.@"return";
} else {
buf = buf ++ "any";
}
buf = buf ++ ";\n";
}
comptime {
if (property.tsdoc.len > 0) {
buf = printTSDoc(property.tsdoc, indent) ++ buf;
}
}
return buf;
}
pub fn printInstanceFunction(comptime func: d.ts, comptime _indent: usize, comptime no_type: bool) string {
comptime var indent = _indent;
comptime var buf: string = "";
comptime {
var args: string = "";
for (func.args) |a, i| {
if (i > 0) {
args = args ++ ", ";
}
args = args ++ printArg(a);
}
if (no_type) {
buf = buf ++ printIndented("{s}({s});\n", .{
func.name,
args,
}, indent);
} else {
buf = buf ++ printIndented("{s}({s}): {s};\n", .{
func.name,
args,
func.@"return",
}, indent);
}
}
comptime {
if (func.tsdoc.len > 0) {
buf = printTSDoc(func.tsdoc, indent) ++ buf;
}
}
return buf;
}
pub fn printFunction(comptime func: d.ts, comptime _indent: usize, comptime no_type: bool) string {
comptime var indent = _indent;
comptime var buf: string = "";
comptime {
var args: string = "";
for (func.args) |a, i| {
if (i > 0) {
args = args ++ ", ";
}
args = args ++ printArg(a);
}
if (no_type) {
buf = buf ++ printIndented("function {s}({s});\n", .{
func.name,
args,
}, indent);
} else {
buf = buf ++ printIndented("function {s}({s}): {s};\n", .{
func.name,
args,
func.@"return",
}, indent);
}
}
comptime {
if (func.tsdoc.len > 0) {
buf = printTSDoc(func.tsdoc, indent) ++ buf;
}
}
return buf;
}
pub fn printArg(
comptime _arg: d.ts.arg,
) string {
comptime var buf: string = "";
comptime {
buf = buf ++ _arg.name;
buf = buf ++ ": ";
if (_arg.@"return".len == 0) {
buf = buf ++ "any";
} else {
buf = buf ++ _arg.@"return";
}
}
return buf;
}
pub fn printDecl(comptime klass: d.ts.decl, comptime _indent: usize) string {
return comptime switch (klass) {
.module => |mod| printModule(mod, _indent),
.class => |cla| printClass(cla, _indent),
.empty => "",
};
}
pub fn printModule(comptime klass: d.ts.module, comptime _indent: usize) string {
comptime var indent = _indent;
comptime var buf: string = "";
comptime brk: {
if (klass.tsdoc.len > 0) {
buf = buf ++ printTSDoc(klass.tsdoc, indent);
}
if (klass.global) {
buf = buf ++ printIndented("declare global {{\n", .{}, indent);
} else {
buf = buf ++ printIndented("declare module \"{s}\" {{\n", .{klass.path}, indent);
}
indent += indent_level;
for (klass.properties) |property, i| {
if (i > 0) {
buf = buf ++ "\n";
}
buf = buf ++ printVar(property, indent);
}
buf = buf ++ "\n";
for (klass.functions) |func, i| {
if (i > 0) {
buf = buf ++ "\n";
}
buf = buf ++ printFunction(
func,
indent,
false,
);
}
for (klass.classes) |func, i| {
if (i > 0) {
buf = buf ++ "\n";
}
buf = buf ++ printClass(
func,
indent,
);
}
indent -= indent_level;
buf = buf ++ printIndented("}}\n", .{}, indent);
break :brk;
}
return comptime buf;
}
pub fn printClass(comptime klass: d.ts.class, comptime _indent: usize) string {
comptime var indent = _indent;
comptime var buf: string = "";
comptime brk: {
if (klass.tsdoc.len > 0) {
buf = buf ++ printTSDoc(klass.tsdoc, indent);
}
const qualifier = if (!klass.default_export) "export " else "";
if (klass.interface) {
buf = buf ++ printIndented("export interface {s} {{\n", .{klass.name}, indent);
} else {
buf = buf ++ printIndented("{s}class {s} {{\n", .{ qualifier, klass.name }, indent);
}
indent += indent_level;
var did_print_constructor = false;
for (klass.functions) |func| {
if (!strings.eqlComptime(func.name, "constructor")) continue;
did_print_constructor = true;
buf = buf ++ printInstanceFunction(
func,
indent,
!klass.interface,
);
}
for (klass.properties) |property, i| {
if (i > 0 or did_print_constructor) {
buf = buf ++ "\n";
}
buf = buf ++ printProperty(property, indent);
}
buf = buf ++ "\n";
for (klass.functions) |func, i| {
if (i > 0) {
buf = buf ++ "\n";
}
if (strings.eqlComptime(func.name, "constructor")) continue;
buf = buf ++ printInstanceFunction(
func,
indent,
false,
);
}
indent -= indent_level;
buf = buf ++ printIndented("}}\n", .{}, indent);
if (klass.default_export) {
buf = buf ++ printIndented("export = {s};\n", .{klass.name}, indent);
}
break :brk;
}
return comptime buf;
}
pub fn printTSDoc(comptime str: string, comptime indent: usize) string {
comptime var buf: string = "";
comptime brk: {
var splitter = std.mem.split(u8, str, "\n");
const first = splitter.next() orelse break :brk;
const second = splitter.next() orelse {
buf = buf ++ printIndented("/** {s} */\n", .{std.mem.trim(u8, first, " ")}, indent);
break :brk;
};
buf = buf ++ printIndented("/**\n", .{}, indent);
buf = buf ++ printIndented(" * {s}\n", .{std.mem.trim(u8, first, " ")}, indent);
buf = buf ++ printIndented(" * {s}\n", .{std.mem.trim(u8, second, " ")}, indent);
while (splitter.next()) |line| {
buf = buf ++ printIndented(" * {s}\n", .{std.mem.trim(u8, line, " ")}, indent);
}
buf = buf ++ printIndented("*/\n", .{}, indent);
}
return buf;
}
};
};
pub const arg = struct {
name: string = "",
@"return": string = "any",
optional: bool = false,
};
};
};
// This should only exist at compile-time.
pub const ClassOptions = struct {
name: stringZ,
read_only: bool = false,
hidden: []const string = &[_]string{},
no_inheritance: bool = false,
singleton: bool = false,
ts: d.ts.decl = d.ts.decl{ .empty = 0 },
has_dom_calls: bool = false,
};
pub fn NewConstructor(
comptime InstanceType: type,
comptime staticFunctions: anytype,
comptime properties: anytype,
) type {
return struct {
pub usingnamespace NewClassWithInstanceType(void, InstanceType.Class.class_options, staticFunctions, properties, InstanceType);
const name_string = ZigString.static(InstanceType.Class.class_options.name);
pub fn constructor(ctx: js.JSContextRef) callconv(.C) js.JSObjectRef {
return JSValue.makeWithNameAndPrototype(
ctx.ptr(),
@This().get().*,
InstanceType.Class.get().*,
name_string,
).asObjectRef();
}
};
}
const _to_json: stringZ = "toJSON";
pub fn NewClass(
comptime ZigType: type,
comptime options: ClassOptions,
comptime staticFunctions: anytype,
comptime properties: anytype,
) type {
return NewClassWithInstanceType(ZigType, options, staticFunctions, properties, void);
}
pub fn NewClassWithInstanceType(
comptime ZigType: type,
comptime options: ClassOptions,
comptime staticFunctions: anytype,
comptime properties: anytype,
comptime InstanceType: type,
) type {
return struct {
const read_only = options.read_only;
const singleton = options.singleton;
pub const name = options.name;
pub const class_options = options;
pub const isJavaScriptCoreClass = true;
pub const Zig = ZigType;
const ClassDefinitionCreator = @This();
const function_names = std.meta.fieldNames(@TypeOf(staticFunctions));
pub const functionDefinitions = staticFunctions;
const function_name_literals = function_names;
var function_name_refs: [function_names.len]js.JSStringRef = undefined;
var function_name_refs_set = false;
const property_names = std.meta.fieldNames(@TypeOf(properties));
var property_name_refs: [property_names.len]js.JSStringRef = undefined;
var property_name_refs_set: bool = false;
const property_name_literals = property_names;
const LazyClassRef = struct {
ref: js.JSClassRef = null,
loaded: bool = false,
};
threadlocal var lazy_ref: LazyClassRef = LazyClassRef{};
pub inline fn isLoaded() bool {
return lazy_ref.loaded;
}
const ConstructorWrapper = struct {
pub fn rfn(
ctx: js.JSContextRef,
function: js.JSObjectRef,
_: js.JSObjectRef,
argumentCount: usize,
arguments: [*c]const js.JSValueRef,
exception: js.ExceptionRef,
) callconv(.C) js.JSValueRef {
return getClassDefinition().callAsConstructor.?(ctx, function, argumentCount, arguments, exception);
}
};
pub fn throwInvalidConstructorError(ctx: js.JSContextRef, _: js.JSObjectRef, _: usize, _: [*c]const js.JSValueRef, exception: js.ExceptionRef) callconv(.C) js.JSObjectRef {
JSError(getAllocator(ctx), "" ++ name ++ " is not a constructor", .{}, ctx, exception);
return null;
}
pub fn throwInvalidFunctionError(
ctx: js.JSContextRef,
_: js.JSObjectRef,
_: js.JSObjectRef,
_: usize,
_: [*c]const js.JSValueRef,
exception: js.ExceptionRef,
) callconv(.C) js.JSValueRef {
JSError(getAllocator(ctx), "" ++ name ++ " is not a function", .{}, ctx, exception);
return null;
}
pub const Constructor = ConstructorWrapper.rfn;
var class_definition: js.JSClassDefinition = undefined;
var class_definition_set: bool = false;
const static_functions__: [function_name_literals.len + 1]js.JSStaticFunction = if (function_name_literals.len > 0) generateDef([function_name_literals.len + 1]js.JSStaticFunction) else undefined;
const static_values_ptr = &static_properties;
fn generateClassDefinition() void {
class_definition = comptime brk: {
var def = generateDef(JSC.C.JSClassDefinition);
if (function_name_literals.len > 0)
def.staticFunctions = &static_functions__;
if (options.no_inheritance) {
def.attributes = JSC.C.JSClassAttributes.kJSClassAttributeNoAutomaticPrototype;
}
if (property_names.len > 0) {
def.staticValues = static_values_ptr;
}
def.className = options.name.ptr;
// def.getProperty = getPropertyCallback;
if (def.callAsConstructor == null) {
def.callAsConstructor = &throwInvalidConstructorError;
}
if (def.callAsFunction == null) {
def.callAsFunction = &throwInvalidFunctionError;
}
if (def.getPropertyNames == null) {
def.getPropertyNames = &getPropertyNames;
}
if (!singleton and def.hasInstance == null)
def.hasInstance = &customHasInstance;
break :brk def;
};
}
fn getClassDefinition() *const JSC.C.JSClassDefinition {
if (!class_definition_set) {
class_definition_set = true;
generateClassDefinition();
}
return &class_definition;
}
pub fn get() callconv(.C) [*c]js.JSClassRef {
var lazy = lazy_ref;
if (!lazy.loaded) {
lazy = .{
.ref = js.JSClassCreate(getClassDefinition()),