public ScriptContext(ScriptRuntime runtime)
{
_isValid = true;
_runtime = runtime;
_ctx = JSApi.JS_NewContext(_runtime);
JSApi.JS_AddIntrinsicOperators(_ctx);
_atoms = new AtomCache(_ctx);
_moduleCache = JSApi.JS_NewObject(_ctx);
_globalObject = JSApi.JS_GetGlobalObject(_ctx);
_numberConstructor = JSApi.JS_GetProperty(_ctx, _globalObject, JSApi.JS_ATOM_Number);
_stringConstructor = JSApi.JS_GetProperty(_ctx, _globalObject, JSApi.JS_ATOM_String);
_operatorCreate = JSApi.JS_UNDEFINED;
var operators = JSApi.JS_GetProperty(_ctx, _globalObject, JSApi.JS_ATOM_Operators);
if (!operators.IsNullish())
{
if (operators.IsException())
{
_ctx.print_exception();
}
else
{
var create = JSApi.JS_GetProperty(_ctx, operators, GetAtom("create"));
JSApi.JS_FreeValue(_ctx, operators);
if (create.IsException())
{
_ctx.print_exception();
}
else
{
if (JSApi.JS_IsFunction(_ctx, create) == 1)
{
_operatorCreate = create;
}
else
{
JSApi.JS_FreeValue(_ctx, create);
}
}
}
}
}
public static bool IsEditorRuntime(ScriptRuntime runtime)
{
var result = false;
_rwlock.EnterWriteLock();
var len = _runtimeRefs.Count;
for (int i = 0; i < len; ++i)
{
var runtimeRef = _runtimeRefs[i];
if (runtimeRef.target == runtime)
{
result = true;
break;
}
}
_rwlock.ExitWriteLock();
return(result);
}
public static ScriptRuntime GetRuntime(JSRuntime rt)
{
ScriptRuntime runtime = null;
if (rt.IsValid())
{
var id = (int)JSApi.JS_GetRuntimeOpaque(rt);
if (id > 0)
{
var index = id - 1;
_rwlock.EnterReadLock();
var slot = _runtimeRefs[index];
runtime = slot.target;
_rwlock.ExitReadLock();
}
}
return(runtime);
}
/// <summary>
/// (内部使用) 获取第一个有效的前台运行时
/// </summary>
public static ScriptRuntime GetRuntime()
{
ScriptRuntime target = null;
_rwlock.EnterWriteLock();
var len = _runtimeRefs.Count;
for (int i = 0; i < len; ++i)
{
var runtimeRef = _runtimeRefs[i];
var runtime = runtimeRef.target;
if (runtime != null && !runtime.isWorker && runtime.isRunning && runtime.isValid)
{
target = runtime;
break;
}
}
_rwlock.ExitWriteLock();
return(target);
}
private void Start(JSContext ctx, JSValue value, string scriptPath)
{
var parent = ScriptEngine.GetRuntime(ctx);
var runtime = parent.CreateWorker();
if (runtime == null)
{
throw new NullReferenceException();
}
_self = JSApi.JS_DupValue(ctx, value);
_parentRuntime = parent;
_parentRuntime.OnDestroy += OnParentDestroy;
_runtime = runtime;
_runtime.OnAfterDestroy += OnWorkerAfterDestroy;
RegisterGlobalObjects();
_runtime.EvalMain(scriptPath);
_thread = new Thread(new ThreadStart(Run));
_thread.Priority = ThreadPriority.Lowest;
_thread.IsBackground = true;
_thread.Start();
}
public static ScriptRuntime CreateRuntime(bool isEditorRuntime)
{
if (!JSApi.IsValid())
{
throw new InvalidOperationException("quickjs library is not matched, you need to rebuild it for current platform");
}
_rwlock.EnterWriteLock();
ScriptRuntimeRef freeEntry;
int slotIndex;
if (_freeSlot < 0)
{
freeEntry = new ScriptRuntimeRef();
slotIndex = _runtimeRefs.Count;
_runtimeRefs.Add(freeEntry);
freeEntry.next = -1;
}
else
{
slotIndex = _freeSlot;
freeEntry = _runtimeRefs[slotIndex];
_freeSlot = freeEntry.next;
freeEntry.next = -1;
}
var runtime = new ScriptRuntime(slotIndex + 1);
freeEntry.target = runtime;
freeEntry.isEditorRuntime = isEditorRuntime;
runtime.OnAfterDestroy += OnRuntimeAfterDestroy;
_rwlock.ExitWriteLock();
RuntimeCreated?.Invoke(runtime);
return(runtime);
}
public unsafe object EvalMain(byte[] source, string module_id, string fullPath, Type expectedReturnType)
{
var tagValue = ScriptRuntime.TryReadByteCodeTagValue(source);
if (tagValue == ScriptRuntime.BYTECODE_ES6_MODULE_TAG)
{
throw new Exception("es6 module bytecode as main is unsupported");
}
object csValue = null;
var dirname = PathUtils.GetDirectoryName(module_id);
var filename_bytes = TextUtils.GetNullTerminatedBytes(module_id);
var module_id_atom = GetAtom(module_id);
var dirname_atom = GetAtom(dirname);
var full_path_atom = GetAtom(fullPath);
var exports_obj = JSApi.JS_NewObject(_ctx);
var require_obj = JSApi.JS_DupValue(_ctx, _require);
var module_obj = _new_commonjs_script_module(null, module_id, fullPath, exports_obj, false);
var module_id_obj = JSApi.JS_AtomToString(_ctx, module_id_atom);
var filename_obj = JSApi.JS_AtomToString(_ctx, full_path_atom);
var dirname_obj = JSApi.JS_AtomToString(_ctx, dirname_atom);
var require_argv = new JSValue[5] {
exports_obj, require_obj, module_obj, filename_obj, dirname_obj
};
JSApi.JS_SetProperty(_ctx, require_obj, GetAtom("moduleId"), JSApi.JS_DupValue(_ctx, module_id_obj));
JSApi.JS_SetProperty(_ctx, require_obj, GetAtom("main"), JSApi.JS_DupValue(_ctx, module_obj));
if (tagValue == ScriptRuntime.BYTECODE_COMMONJS_MODULE_TAG)
{
// bytecode
fixed(byte *intput_ptr = source)
{
var bytecodeFunc = JSApi.JS_ReadObject(_ctx, intput_ptr + sizeof(uint), source.Length - sizeof(uint), JSApi.JS_READ_OBJ_BYTECODE);
if (bytecodeFunc.tag == JSApi.JS_TAG_FUNCTION_BYTECODE)
{
var func_val = JSApi.JS_EvalFunction(_ctx, bytecodeFunc); // it's CallFree (bytecodeFunc)
if (JSApi.JS_IsFunction(_ctx, func_val) != 1)
{
JSApi.JS_FreeValue(_ctx, func_val);
FreeValues(require_argv);
throw new Exception("failed to eval bytecode module");
}
var rval = JSApi.JS_Call(_ctx, func_val, JSApi.JS_UNDEFINED);
JSApi.JS_FreeValue(_ctx, func_val);
if (rval.IsException())
{
_ctx.print_exception();
JSApi.JS_FreeValue(_ctx, rval);
FreeValues(require_argv);
throw new Exception("failed to eval bytecode module");
}
// success
Values.js_get_var(_ctx, rval, expectedReturnType, out csValue);
JSApi.JS_FreeValue(_ctx, rval);
JSApi.JS_SetProperty(_ctx, module_obj, GetAtom("loaded"), JSApi.JS_NewBool(_ctx, true));
FreeValues(require_argv);
return(csValue);
}
JSApi.JS_FreeValue(_ctx, bytecodeFunc);
FreeValues(require_argv);
throw new Exception("failed to eval bytecode module");
}
}
else
{
// source
var input_bytes = TextUtils.GetShebangNullTerminatedCommonJSBytes(source);
fixed(byte *input_ptr = input_bytes)
fixed(byte *resolved_id_ptr = filename_bytes)
{
var input_len = (size_t)(input_bytes.Length - 1);
var func_val = JSApi.JS_Eval(_ctx, input_ptr, input_len, resolved_id_ptr, JSEvalFlags.JS_EVAL_TYPE_GLOBAL | JSEvalFlags.JS_EVAL_FLAG_STRICT);
if (func_val.IsException())
{
FreeValues(require_argv);
_ctx.print_exception();
throw new Exception("failed to eval module");
}
if (JSApi.JS_IsFunction(_ctx, func_val) == 1)
{
var rval = JSApi.JS_Call(_ctx, func_val, JSApi.JS_UNDEFINED, require_argv.Length, require_argv);
if (rval.IsException())
{
JSApi.JS_FreeValue(_ctx, func_val);
FreeValues(require_argv);
_ctx.print_exception();
throw new Exception("failed to eval module");
}
Values.js_get_var(_ctx, rval, expectedReturnType, out csValue);
JSApi.JS_FreeValue(_ctx, rval);
}
JSApi.JS_FreeValue(_ctx, func_val);
JSApi.JS_SetProperty(_ctx, module_obj, GetAtom("loaded"), JSApi.JS_NewBool(_ctx, true));
FreeValues(require_argv);
return(csValue);
}
}
}
// this method will consume the module_obj refcount
public unsafe JSValue LoadModuleFromSource(byte[] source, string resolved_id, JSValue module_obj)
{
var context = this;
var ctx = _ctx;
var dirname = PathUtils.GetDirectoryName(resolved_id);
var resolved_id_bytes = Utils.TextUtils.GetNullTerminatedBytes(resolved_id);
var filename_obj = JSApi.JS_GetProperty(ctx, module_obj, context.GetAtom("filename"));
var module_id_atom = context.GetAtom(resolved_id);
var dirname_atom = context.GetAtom(dirname);
var require_obj = JSApi.JSB_NewCFunction(ctx, ScriptRuntime.module_require, context.GetAtom("require"), 1, JSCFunctionEnum.JS_CFUNC_generic, 0);
var main_mod_obj = context._dup_commonjs_main_module();
var dirname_obj = JSApi.JS_AtomToString(ctx, dirname_atom);
var exports_obj = JSApi.JS_GetProperty(ctx, module_obj, context.GetAtom("exports"));
JSApi.JS_SetProperty(ctx, require_obj, context.GetAtom("moduleId"), JSApi.JS_AtomToString(ctx, module_id_atom));
JSApi.JS_SetProperty(ctx, require_obj, context.GetAtom("main"), main_mod_obj);
var require_argv = new JSValue[5] {
exports_obj, require_obj, module_obj, filename_obj, dirname_obj,
};
var tagValue = ScriptRuntime.TryReadByteCodeTagValue(source);
if (tagValue == ScriptRuntime.BYTECODE_COMMONJS_MODULE_TAG)
{
// bytecode
fixed(byte *intput_ptr = source)
{
var bytecodeFunc = JSApi.JS_ReadObject(ctx, intput_ptr + sizeof(uint), source.Length - sizeof(uint), JSApi.JS_READ_OBJ_BYTECODE);
if (bytecodeFunc.tag == JSApi.JS_TAG_FUNCTION_BYTECODE)
{
var func_val = JSApi.JS_EvalFunction(ctx, bytecodeFunc); // it's CallFree (bytecodeFunc)
if (JSApi.JS_IsFunction(ctx, func_val) != 1)
{
JSApi.JS_FreeValue(ctx, func_val);
JSApi.JS_FreeValue(ctx, require_argv);
return(JSApi.JS_ThrowInternalError(ctx, "failed to require bytecode module"));
}
var rval = JSApi.JS_Call(ctx, func_val, JSApi.JS_UNDEFINED, require_argv.Length, require_argv);
JSApi.JS_FreeValue(ctx, func_val);
if (rval.IsException())
{
JSApi.JS_FreeValue(ctx, require_argv);
return(rval);
}
// success
JSApi.JS_FreeValue(ctx, rval);
}
else
{
JSApi.JS_FreeValue(ctx, bytecodeFunc);
JSApi.JS_FreeValue(ctx, require_argv);
return(JSApi.JS_ThrowInternalError(ctx, "failed to require bytecode module"));
}
}
}
else
{
// source
var input_bytes = TextUtils.GetShebangNullTerminatedCommonJSBytes(source);
fixed(byte *input_ptr = input_bytes)
fixed(byte *resolved_id_ptr = resolved_id_bytes)
{
var input_len = (size_t)(input_bytes.Length - 1);
var func_val = JSApi.JS_Eval(ctx, input_ptr, input_len, resolved_id_ptr, JSEvalFlags.JS_EVAL_TYPE_GLOBAL | JSEvalFlags.JS_EVAL_FLAG_STRICT);
if (func_val.IsException())
{
JSApi.JS_FreeValue(ctx, require_argv);
return(func_val);
}
if (JSApi.JS_IsFunction(ctx, func_val) == 1)
{
var rval = JSApi.JS_Call(ctx, func_val, JSApi.JS_UNDEFINED, require_argv.Length, require_argv);
if (rval.IsException())
{
JSApi.JS_FreeValue(ctx, func_val);
JSApi.JS_FreeValue(ctx, require_argv);
return(rval);
}
JSApi.JS_FreeValue(ctx, rval);
}
JSApi.JS_FreeValue(ctx, func_val);
}
}
JSApi.JS_SetProperty(ctx, module_obj, context.GetAtom("loaded"), JSApi.JS_NewBool(ctx, true));
var exports_ = JSApi.JS_GetProperty(ctx, module_obj, context.GetAtom("exports"));
JSApi.JS_FreeValue(ctx, require_argv);
return(exports_);
}
// 在主线程回调
private static unsafe void _PostMessage(ScriptRuntime runtime, JSAction action)
{
var worker = action.worker;
try
{
if (worker._runtime.isRunning && worker._parentRuntime.isRunning)
{
var context = runtime.GetMainContext();
var ctx = (JSContext)context;
var onmessage = JSApi.JS_GetProperty(ctx, worker._self, context.GetAtom("onmessage"));
if (onmessage.IsException())
{
var exceptionString = ctx.GetExceptionString();
var logger = runtime.GetLogger();
if (logger != null)
{
logger.Write(LogLevel.Error, exceptionString);
}
}
else
{
if (JSApi.JS_IsFunction(ctx, onmessage) == 1)
{
// read object => jsvalue
JSValue data;
fixed(byte *buf = action.buffer.data)
{
data = JSApi.JS_ReadObject(ctx, buf, action.buffer.readableBytes, 0);
}
if (data.IsException())
{
var exceptionString = ctx.GetExceptionString();
var logger = runtime.GetLogger();
if (logger != null)
{
logger.Write(LogLevel.Error, exceptionString);
}
}
else
{
var argv = stackalloc JSValue[1] {
data
};
var rval = JSApi.JS_Call(ctx, onmessage, worker._self, 1, argv);
JSApi.JS_FreeValue(ctx, rval);
}
}
else
{
// not function
}
JSApi.JS_FreeValue(ctx, onmessage);
}
}
}
finally
{
action.buffer.Release();
}
}
public static Extra.SourceMapHelper EnableSourceMap(this ScriptRuntime runtime, string workspace = null)
{
var helper = new Extra.SourceMapHelper();
helper.OpenWorkspace(runtime, workspace);
return helper;
}
private static void _FreeValueAction(ScriptRuntime rt, JSAction action)
{
JSApi.JS_FreeValueRT(rt, action.value);
}
/// <summary>
/// master 处理 worker 发送的消息 (在master线程回调)
/// </summary>
private static unsafe void _MasterOnMessage(ScriptRuntime runtime, JSAction action)
{
var args = (JSWorkerArgs)action.args;
var buffer = args.buffer;
try
{
var worker = args.worker;
if (worker._runtime.isRunning && worker._parentRuntime.isRunning)
{
var context = runtime.GetMainContext();
var ctx = (JSContext)context;
var onmessage = JSApi.JS_GetProperty(ctx, worker._self, context.GetAtom("onmessage"));
if (onmessage.IsException())
{
var exceptionString = ctx.GetExceptionString();
var logger = runtime.GetLogger();
if (logger != null)
{
logger.Write(LogLevel.Error, exceptionString);
}
}
else
{
if (JSApi.JS_IsFunction(ctx, onmessage) == 1)
{
// read object => jsvalue
JSValue data;
fixed(byte *buf = buffer.data)
{
data = JSApi.JS_ReadObject(ctx, buf, buffer.readableBytes, JSApi.JS_READ_OBJ_REFERENCE);
}
do
{
if (!data.IsException())
{
var evt = JSApi.JS_NewObject(ctx);
if (!evt.IsException())
{
JSApi.JS_SetProperty(ctx, evt, context.GetAtom("data"), data);
var argv = stackalloc JSValue[1] {
evt
};
var rval = JSApi.JS_Call(ctx, onmessage, worker._self, 1, argv);
JSApi.JS_FreeValue(ctx, rval);
JSApi.JS_FreeValue(ctx, evt);
break;
}
else
{
JSApi.JS_FreeValue(ctx, data);
}
}
var exceptionString = ctx.GetExceptionString();
var logger = runtime.GetLogger();
if (logger != null)
{
logger.Write(LogLevel.Error, exceptionString);
}
} while (false);
}
else
{
// not function
}
JSApi.JS_FreeValue(ctx, onmessage);
}
}
}
finally
{
buffer.Release();
}
}
private static void OnRuntimeAfterDestroy(ScriptRuntime runtime)
{
_runtime = null;
}
public static ScriptRuntime CreateRuntime()
{
_runtime = new ScriptRuntime();
_runtime.OnAfterDestroy += OnRuntimeAfterDestroy;
return(_runtime);
}
private static void _FreeValueAction(ScriptRuntime rt, JSValue value)
{
JSApi.JS_FreeValueRT(rt, value);
}
