diff options
Diffstat (limited to 'core/bindings.rs')
| -rw-r--r-- | core/bindings.rs | 1159 |
1 files changed, 4 insertions, 1155 deletions
diff --git a/core/bindings.rs b/core/bindings.rs index 48e9a4561..5681ded31 100644 --- a/core/bindings.rs +++ b/core/bindings.rs @@ -1,128 +1,27 @@ // Copyright 2018-2022 the Deno authors. All rights reserved. MIT license. use crate::error::is_instance_of_error; -use crate::error::JsError; use crate::modules::get_asserted_module_type_from_assertions; use crate::modules::parse_import_assertions; use crate::modules::validate_import_assertions; use crate::modules::ImportAssertionsKind; use crate::modules::ModuleMap; use crate::ops::OpCtx; -use crate::ops_builtin::WasmStreamingResource; -use crate::resolve_url_or_path; -use crate::source_map::apply_source_map as apply_source_map_; use crate::JsRuntime; -use crate::PromiseId; -use crate::ResourceId; -use crate::ZeroCopyBuf; -use anyhow::Error; use log::debug; use once_cell::sync::Lazy; -use serde::Deserialize; -use serde::Serialize; -use serde_v8::to_v8; -use std::cell::RefCell; -use std::collections::HashMap; use std::option::Option; use std::os::raw::c_void; -use url::Url; -use v8::HandleScope; -use v8::Local; use v8::MapFnTo; -use v8::SharedArrayBuffer; -use v8::ValueDeserializerHelper; -use v8::ValueSerializerHelper; pub static EXTERNAL_REFERENCES: Lazy<v8::ExternalReferences> = Lazy::new(|| { - v8::ExternalReferences::new(&[ - v8::ExternalReference { - function: ref_op.map_fn_to(), - }, - v8::ExternalReference { - function: unref_op.map_fn_to(), - }, - v8::ExternalReference { - function: set_macrotask_callback.map_fn_to(), - }, - v8::ExternalReference { - function: set_nexttick_callback.map_fn_to(), - }, - v8::ExternalReference { - function: set_promise_reject_callback.map_fn_to(), - }, - v8::ExternalReference { - function: set_uncaught_exception_callback.map_fn_to(), - }, - v8::ExternalReference { - function: set_format_exception_callback.map_fn_to(), - }, - v8::ExternalReference { - function: run_microtasks.map_fn_to(), - }, - v8::ExternalReference { - function: has_tick_scheduled.map_fn_to(), - }, - v8::ExternalReference { - function: set_has_tick_scheduled.map_fn_to(), - }, - v8::ExternalReference { - function: eval_context.map_fn_to(), - }, - v8::ExternalReference { - function: queue_microtask.map_fn_to(), - }, - v8::ExternalReference { - function: create_host_object.map_fn_to(), - }, - v8::ExternalReference { - function: encode.map_fn_to(), - }, - v8::ExternalReference { - function: decode.map_fn_to(), - }, - v8::ExternalReference { - function: serialize.map_fn_to(), - }, - v8::ExternalReference { - function: deserialize.map_fn_to(), - }, - v8::ExternalReference { - function: get_promise_details.map_fn_to(), - }, - v8::ExternalReference { - function: get_proxy_details.map_fn_to(), - }, - v8::ExternalReference { - function: is_proxy.map_fn_to(), - }, - v8::ExternalReference { - function: memory_usage.map_fn_to(), - }, - v8::ExternalReference { - function: call_console.map_fn_to(), - }, - v8::ExternalReference { - function: set_wasm_streaming_callback.map_fn_to(), - }, - v8::ExternalReference { - function: abort_wasm_streaming.map_fn_to(), - }, - v8::ExternalReference { - function: destructure_error.map_fn_to(), - }, - v8::ExternalReference { - function: terminate.map_fn_to(), - }, - v8::ExternalReference { - function: apply_source_map.map_fn_to(), - }, - v8::ExternalReference { - function: op_names.map_fn_to(), - }, - ]) + v8::ExternalReferences::new(&[v8::ExternalReference { + function: call_console.map_fn_to(), + }]) }); +// TODO(nayeemrmn): Move to runtime and/or make `pub(crate)`. pub fn script_origin<'a>( s: &mut v8::HandleScope<'a>, resource_name: v8::Local<'a, v8::String>, @@ -191,71 +90,7 @@ pub fn initialize_context<'s>( let core_val = JsRuntime::ensure_objs(scope, global, "Deno.core").unwrap(); // Bind functions to Deno.core.* - set_func(scope, core_val, "refOp_", ref_op); - set_func(scope, core_val, "unrefOp_", unref_op); - set_func( - scope, - core_val, - "setMacrotaskCallback", - set_macrotask_callback, - ); - set_func( - scope, - core_val, - "setNextTickCallback", - set_nexttick_callback, - ); - set_func( - scope, - core_val, - "setPromiseRejectCallback", - set_promise_reject_callback, - ); - set_func( - scope, - core_val, - "setUncaughtExceptionCallback", - set_uncaught_exception_callback, - ); - set_func( - scope, - core_val, - "setFormatExceptionCallback", - set_format_exception_callback, - ); - set_func(scope, core_val, "runMicrotasks", run_microtasks); - set_func(scope, core_val, "hasTickScheduled", has_tick_scheduled); - set_func( - scope, - core_val, - "setHasTickScheduled", - set_has_tick_scheduled, - ); - set_func(scope, core_val, "evalContext", eval_context); - set_func(scope, core_val, "encode", encode); - set_func(scope, core_val, "decode", decode); - set_func(scope, core_val, "serialize", serialize); - set_func(scope, core_val, "deserialize", deserialize); - set_func(scope, core_val, "getPromiseDetails", get_promise_details); - set_func(scope, core_val, "getProxyDetails", get_proxy_details); - set_func(scope, core_val, "isProxy", is_proxy); - set_func(scope, core_val, "memoryUsage", memory_usage); set_func(scope, core_val, "callConsole", call_console); - set_func(scope, core_val, "createHostObject", create_host_object); - set_func( - scope, - core_val, - "setWasmStreamingCallback", - set_wasm_streaming_callback, - ); - set_func(scope, core_val, "abortWasmStreaming", abort_wasm_streaming); - set_func(scope, core_val, "destructureError", destructure_error); - set_func(scope, core_val, "terminate", terminate); - set_func(scope, core_val, "applySourceMap", apply_source_map); - set_func(scope, core_val, "opNames", op_names); - - // Direct bindings on `window`. - set_func(scope, global, "queueMicrotask", queue_microtask); // Bind functions to Deno.core.ops.* let ops_obj = JsRuntime::ensure_objs(scope, global, "Deno.core.ops").unwrap(); @@ -522,249 +357,6 @@ pub extern "C" fn promise_reject_callback(message: v8::PromiseRejectMessage) { } } -fn ref_op<'s>( - scope: &mut v8::HandleScope<'s>, - args: v8::FunctionCallbackArguments, - _rv: v8::ReturnValue, -) { - let state_rc = JsRuntime::state(scope); - let mut state = state_rc.borrow_mut(); - - let promise_id = match v8::Local::<v8::Integer>::try_from(args.get(0)) - .map(|l| l.value() as PromiseId) - .map_err(Error::from) - { - Ok(promise_id) => promise_id, - Err(err) => { - throw_type_error(scope, format!("invalid promise id: {}", err)); - return; - } - }; - - state.unrefed_ops.remove(&promise_id); -} - -fn unref_op<'s>( - scope: &mut v8::HandleScope<'s>, - args: v8::FunctionCallbackArguments, - _rv: v8::ReturnValue, -) { - let state_rc = JsRuntime::state(scope); - let mut state = state_rc.borrow_mut(); - - let promise_id = match v8::Local::<v8::Integer>::try_from(args.get(0)) - .map(|l| l.value() as PromiseId) - .map_err(Error::from) - { - Ok(promise_id) => promise_id, - Err(err) => { - throw_type_error(scope, format!("invalid promise id: {}", err)); - return; - } - }; - - state.unrefed_ops.insert(promise_id); -} - -fn has_tick_scheduled( - scope: &mut v8::HandleScope, - _args: v8::FunctionCallbackArguments, - mut rv: v8::ReturnValue, -) { - let state_rc = JsRuntime::state(scope); - let state = state_rc.borrow(); - rv.set(to_v8(scope, state.has_tick_scheduled).unwrap()); -} - -fn set_has_tick_scheduled( - scope: &mut v8::HandleScope, - args: v8::FunctionCallbackArguments, - _rv: v8::ReturnValue, -) { - let state_rc = JsRuntime::state(scope); - let mut state = state_rc.borrow_mut(); - - state.has_tick_scheduled = args.get(0).is_true(); -} - -fn run_microtasks( - scope: &mut v8::HandleScope, - _args: v8::FunctionCallbackArguments, - _rv: v8::ReturnValue, -) { - scope.perform_microtask_checkpoint(); -} - -fn set_nexttick_callback( - scope: &mut v8::HandleScope, - args: v8::FunctionCallbackArguments, - _rv: v8::ReturnValue, -) { - if let Ok(cb) = arg0_to_cb(scope, args) { - JsRuntime::state(scope) - .borrow_mut() - .js_nexttick_cbs - .push(cb); - } -} - -fn set_macrotask_callback( - scope: &mut v8::HandleScope, - args: v8::FunctionCallbackArguments, - _rv: v8::ReturnValue, -) { - if let Ok(cb) = arg0_to_cb(scope, args) { - JsRuntime::state(scope) - .borrow_mut() - .js_macrotask_cbs - .push(cb); - } -} - -fn set_promise_reject_callback( - scope: &mut v8::HandleScope, - args: v8::FunctionCallbackArguments, - mut rv: v8::ReturnValue, -) { - if let Ok(new) = arg0_to_cb(scope, args) { - if let Some(old) = JsRuntime::state(scope) - .borrow_mut() - .js_promise_reject_cb - .replace(new) - { - let old = v8::Local::new(scope, old); - rv.set(old.into()); - } - } -} - -fn set_uncaught_exception_callback( - scope: &mut v8::HandleScope, - args: v8::FunctionCallbackArguments, - mut rv: v8::ReturnValue, -) { - if let Ok(new) = arg0_to_cb(scope, args) { - if let Some(old) = JsRuntime::state(scope) - .borrow_mut() - .js_uncaught_exception_cb - .replace(new) - { - let old = v8::Local::new(scope, old); - rv.set(old.into()); - } - } -} - -/// Set a callback which formats exception messages as stored in -/// `JsError::exception_message`. The callback is passed the error value and -/// should return a string or `null`. If no callback is set or the callback -/// returns `null`, the built-in default formatting will be used. -fn set_format_exception_callback( - scope: &mut v8::HandleScope, - args: v8::FunctionCallbackArguments, - mut rv: v8::ReturnValue, -) { - if let Ok(new) = arg0_to_cb(scope, args) { - if let Some(old) = JsRuntime::state(scope) - .borrow_mut() - .js_format_exception_cb - .replace(new) - { - let old = v8::Local::new(scope, old); - rv.set(old.into()); - } - } -} - -fn arg0_to_cb( - scope: &mut v8::HandleScope, - args: v8::FunctionCallbackArguments, -) -> Result<v8::Global<v8::Function>, ()> { - v8::Local::<v8::Function>::try_from(args.get(0)) - .map(|cb| v8::Global::new(scope, cb)) - .map_err(|err| throw_type_error(scope, err.to_string())) -} - -fn eval_context( - scope: &mut v8::HandleScope, - args: v8::FunctionCallbackArguments, - mut rv: v8::ReturnValue, -) { - let source = match v8::Local::<v8::String>::try_from(args.get(0)) { - Ok(s) => s, - Err(_) => { - throw_type_error(scope, "Missing first argument"); - return; - } - }; - - let url = match v8::Local::<v8::String>::try_from(args.get(1)) { - Ok(s) => match resolve_url_or_path(&s.to_rust_string_lossy(scope)) { - Ok(s) => Some(s), - Err(err) => { - throw_type_error(scope, &format!("Invalid specifier: {}", err)); - return; - } - }, - Err(_) => None, - }; - - #[derive(Serialize)] - struct Output<'s>(Option<serde_v8::Value<'s>>, Option<ErrInfo<'s>>); - - #[derive(Serialize)] - #[serde(rename_all = "camelCase")] - struct ErrInfo<'s> { - thrown: serde_v8::Value<'s>, - is_native_error: bool, - is_compile_error: bool, - } - - let tc_scope = &mut v8::TryCatch::new(scope); - let name = v8::String::new( - tc_scope, - url.as_ref().map_or(crate::DUMMY_SPECIFIER, Url::as_str), - ) - .unwrap(); - let origin = script_origin(tc_scope, name); - let maybe_script = v8::Script::compile(tc_scope, source, Some(&origin)); - - if maybe_script.is_none() { - assert!(tc_scope.has_caught()); - let exception = tc_scope.exception().unwrap(); - let output = Output( - None, - Some(ErrInfo { - thrown: exception.into(), - is_native_error: is_instance_of_error(tc_scope, exception), - is_compile_error: true, - }), - ); - rv.set(to_v8(tc_scope, output).unwrap()); - return; - } - - let result = maybe_script.unwrap().run(tc_scope); - - if result.is_none() { - assert!(tc_scope.has_caught()); - let exception = tc_scope.exception().unwrap(); - let output = Output( - None, - Some(ErrInfo { - thrown: exception.into(), - is_native_error: is_instance_of_error(tc_scope, exception), - is_compile_error: false, - }), - ); - rv.set(to_v8(tc_scope, output).unwrap()); - return; - } - - let output = Output(Some(result.unwrap().into()), None); - rv.set(to_v8(tc_scope, output).unwrap()); -} - /// This binding should be used if there's a custom console implementation /// available. Using it will make sure that proper stack frames are displayed /// in the inspector console. @@ -815,617 +407,6 @@ fn call_console( deno_console_method.call(scope, receiver.into(), &call_args); } -fn set_wasm_streaming_callback( - scope: &mut v8::HandleScope, - args: v8::FunctionCallbackArguments, - _rv: v8::ReturnValue, -) { - let cb = match arg0_to_cb(scope, args) { - Ok(cb) => cb, - Err(()) => return, - }; - - let state_rc = JsRuntime::state(scope); - let mut state = state_rc.borrow_mut(); - - // The callback to pass to the v8 API has to be a unit type, so it can't - // borrow or move any local variables. Therefore, we're storing the JS - // callback in a JsRuntimeState slot. - if let slot @ None = &mut state.js_wasm_streaming_cb { - slot.replace(cb); - } else { - return throw_type_error( - scope, - "Deno.core.setWasmStreamingCallback() already called", - ); - } - - scope.set_wasm_streaming_callback(|scope, arg, wasm_streaming| { - let (cb_handle, streaming_rid) = { - let state_rc = JsRuntime::state(scope); - let state = state_rc.borrow(); - let cb_handle = state.js_wasm_streaming_cb.as_ref().unwrap().clone(); - let streaming_rid = state - .op_state - .borrow_mut() - .resource_table - .add(WasmStreamingResource(RefCell::new(wasm_streaming))); - (cb_handle, streaming_rid) - }; - - let undefined = v8::undefined(scope); - let rid = serde_v8::to_v8(scope, streaming_rid).unwrap(); - cb_handle - .open(scope) - .call(scope, undefined.into(), &[arg, rid]); - }); -} - -fn abort_wasm_streaming( - scope: &mut v8::HandleScope, - args: v8::FunctionCallbackArguments, - _rv: v8::ReturnValue, -) { - let rid: ResourceId = match serde_v8::from_v8(scope, args.get(0)) { - Ok(rid) => rid, - Err(_) => return throw_type_error(scope, "Invalid argument"), - }; - let exception = args.get(1); - - let wasm_streaming = { - let state_rc = JsRuntime::state(scope); - let state = state_rc.borrow(); - let wsr = state - .op_state - .borrow_mut() - .resource_table - .take::<WasmStreamingResource>(rid); - match wsr { - Ok(wasm_streaming) => wasm_streaming, - Err(err) => { - let message = v8::String::new(scope, &err.to_string()).unwrap(); - let v8_error = v8::Exception::error(scope, message); - scope.throw_exception(v8_error); - return; - } - } - }; - - // At this point there are no clones of Rc<WasmStreamingResource> on the - // resource table, and no one should own a reference because we're never - // cloning them. So we can be sure `wasm_streaming` is the only reference. - if let Ok(wsr) = std::rc::Rc::try_unwrap(wasm_streaming) { - // NOTE: v8::WasmStreaming::abort can't be called while `state` is borrowed; - // see https://github.com/denoland/deno/issues/13917 - wsr.0.into_inner().abort(Some(exception)); - } else { - panic!("Couldn't consume WasmStreamingResource."); - } -} - -fn encode( - scope: &mut v8::HandleScope, - args: v8::FunctionCallbackArguments, - mut rv: v8::ReturnValue, -) { - let text = match v8::Local::<v8::String>::try_from(args.get(0)) { - Ok(s) => s, - Err(_) => { - throw_type_error(scope, "Invalid argument"); - return; - } - }; - let text_str = serde_v8::to_utf8(text, scope); - let bytes = text_str.into_bytes(); - let len = bytes.len(); - let backing_store = - v8::ArrayBuffer::new_backing_store_from_vec(bytes).make_shared(); - let buffer = v8::ArrayBuffer::with_backing_store(scope, &backing_store); - let u8array = v8::Uint8Array::new(scope, buffer, 0, len).unwrap(); - rv.set(u8array.into()) -} - -fn decode( - scope: &mut v8::HandleScope, - args: v8::FunctionCallbackArguments, - mut rv: v8::ReturnValue, -) { - let zero_copy: ZeroCopyBuf = match serde_v8::from_v8(scope, args.get(0)) { - Ok(zbuf) => zbuf, - Err(_) => { - throw_type_error(scope, "Invalid argument"); - return; - } - }; - let buf = &zero_copy; - - // Strip BOM - let buf = - if buf.len() >= 3 && buf[0] == 0xef && buf[1] == 0xbb && buf[2] == 0xbf { - &buf[3..] - } else { - buf - }; - - // If `String::new_from_utf8()` returns `None`, this means that the - // length of the decoded string would be longer than what V8 can - // handle. In this case we return `RangeError`. - // - // For more details see: - // - https://encoding.spec.whatwg.org/#dom-textdecoder-decode - // - https://github.com/denoland/deno/issues/6649 - // - https://github.com/v8/v8/blob/d68fb4733e39525f9ff0a9222107c02c28096e2a/include/v8.h#L3277-L3278 - match v8::String::new_from_utf8(scope, buf, v8::NewStringType::Normal) { - Some(text) => rv.set(text.into()), - None => { - let msg = v8::String::new(scope, "string too long").unwrap(); - let exception = v8::Exception::range_error(scope, msg); - scope.throw_exception(exception); - } - }; -} - -struct SerializeDeserialize<'a> { - host_objects: Option<v8::Local<'a, v8::Array>>, - error_callback: Option<v8::Local<'a, v8::Function>>, -} - -impl<'a> v8::ValueSerializerImpl for SerializeDeserialize<'a> { - #[allow(unused_variables)] - fn throw_data_clone_error<'s>( - &mut self, - scope: &mut v8::HandleScope<'s>, - message: v8::Local<'s, v8::String>, - ) { - if let Some(cb) = self.error_callback { - let scope = &mut v8::TryCatch::new(scope); - let undefined = v8::undefined(scope).into(); - cb.call(scope, undefined, &[message.into()]); - if scope.has_caught() || scope.has_terminated() { - scope.rethrow(); - return; - }; - } - let error = v8::Exception::type_error(scope, message); - scope.throw_exception(error); - } - - fn get_shared_array_buffer_id<'s>( - &mut self, - scope: &mut HandleScope<'s>, - shared_array_buffer: Local<'s, SharedArrayBuffer>, - ) -> Option<u32> { - let state_rc = JsRuntime::state(scope); - let state = state_rc.borrow_mut(); - if let Some(shared_array_buffer_store) = &state.shared_array_buffer_store { - let backing_store = shared_array_buffer.get_backing_store(); - let id = shared_array_buffer_store.insert(backing_store); - Some(id) - } else { - None - } - } - - fn get_wasm_module_transfer_id( - &mut self, - scope: &mut HandleScope<'_>, - module: Local<v8::WasmModuleObject>, - ) -> Option<u32> { - let state_rc = JsRuntime::state(scope); - let state = state_rc.borrow_mut(); - if let Some(compiled_wasm_module_store) = &state.compiled_wasm_module_store - { - let compiled_wasm_module = module.get_compiled_module(); - let id = compiled_wasm_module_store.insert(compiled_wasm_module); - Some(id) - } else { - None - } - } - - fn write_host_object<'s>( - &mut self, - scope: &mut v8::HandleScope<'s>, - object: v8::Local<'s, v8::Object>, - value_serializer: &mut dyn v8::ValueSerializerHelper, - ) -> Option<bool> { - if let Some(host_objects) = self.host_objects { - for i in 0..host_objects.length() { - let value = host_objects.get_index(scope, i).unwrap(); - if value == object { - value_serializer.write_uint32(i); - return Some(true); - } - } - } - let message = v8::String::new(scope, "Unsupported object type").unwrap(); - self.throw_data_clone_error(scope, message); - None - } -} - -impl<'a> v8::ValueDeserializerImpl for SerializeDeserialize<'a> { - fn get_shared_array_buffer_from_id<'s>( - &mut self, - scope: &mut HandleScope<'s>, - transfer_id: u32, - ) -> Option<Local<'s, SharedArrayBuffer>> { - let state_rc = JsRuntime::state(scope); - let state = state_rc.borrow_mut(); - if let Some(shared_array_buffer_store) = &state.shared_array_buffer_store { - let backing_store = shared_array_buffer_store.take(transfer_id)?; - let shared_array_buffer = - v8::SharedArrayBuffer::with_backing_store(scope, &backing_store); - Some(shared_array_buffer) - } else { - None - } - } - - fn get_wasm_module_from_id<'s>( - &mut self, - scope: &mut HandleScope<'s>, - clone_id: u32, - ) -> Option<Local<'s, v8::WasmModuleObject>> { - let state_rc = JsRuntime::state(scope); - let state = state_rc.borrow_mut(); - if let Some(compiled_wasm_module_store) = &state.compiled_wasm_module_store - { - let compiled_module = compiled_wasm_module_store.take(clone_id)?; - v8::WasmModuleObject::from_compiled_module(scope, &compiled_module) - } else { - None - } - } - - fn read_host_object<'s>( - &mut self, - scope: &mut v8::HandleScope<'s>, - value_deserializer: &mut dyn v8::ValueDeserializerHelper, - ) -> Option<v8::Local<'s, v8::Object>> { - if let Some(host_objects) = self.host_objects { - let mut i = 0; - if !value_deserializer.read_uint32(&mut i) { - return None; - } - let maybe_value = host_objects.get_index(scope, i); - if let Some(value) = maybe_value { - return value.to_object(scope); - } - } - - let message = - v8::String::new(scope, "Failed to deserialize host object").unwrap(); - let error = v8::Exception::error(scope, message); - scope.throw_exception(error); - None - } -} - -fn serialize( - scope: &mut v8::HandleScope, - args: v8::FunctionCallbackArguments, - mut rv: v8::ReturnValue, -) { - let value = args.get(0); - - let options: Option<SerializeDeserializeOptions> = - match serde_v8::from_v8(scope, args.get(1)) { - Ok(opts) => opts, - Err(_) => { - throw_type_error(scope, "Invalid argument 2"); - return; - } - }; - - let arg2_to_error_callback = match !args.get(2).is_undefined() { - true => match v8::Local::<v8::Function>::try_from(args.get(2)) { - Ok(cb) => Some(v8::Local::new(scope, cb)), - Err(_) => { - throw_type_error(scope, "Invalid argument 3"); - return; - } - }, - false => None, - }; - - let options = options.unwrap_or(SerializeDeserializeOptions { - host_objects: None, - transfered_array_buffers: None, - }); - - let host_objects = match options.host_objects { - Some(value) => match v8::Local::<v8::Array>::try_from(value.v8_value) { - Ok(host_objects) => Some(host_objects), - Err(_) => { - throw_type_error(scope, "host_objects not an array"); - return; - } - }, - None => None, - }; - - let transfered_array_buffers = match options.transfered_array_buffers { - Some(value) => match v8::Local::<v8::Array>::try_from(value.v8_value) { - Ok(transfered_array_buffers) => Some(transfered_array_buffers), - Err(_) => { - throw_type_error(scope, "transfered_array_buffers not an array"); - return; - } - }, - None => None, - }; - - let serialize_deserialize = Box::new(SerializeDeserialize { - host_objects, - error_callback: arg2_to_error_callback, - }); - - let mut value_serializer = - v8::ValueSerializer::new(scope, serialize_deserialize); - - value_serializer.write_header(); - - if let Some(transfered_array_buffers) = transfered_array_buffers { - let state_rc = JsRuntime::state(scope); - let state = state_rc.borrow_mut(); - for i in 0..transfered_array_buffers.length() { - let i = v8::Number::new(scope, i as f64).into(); - let buf = transfered_array_buffers.get(scope, i).unwrap(); - let buf = match v8::Local::<v8::ArrayBuffer>::try_from(buf) { - Ok(buf) => buf, - Err(_) => { - throw_type_error( - scope, - "item in transfered_array_buffers not an ArrayBuffer", - ); - return; - } - }; - if let Some(shared_array_buffer_store) = &state.shared_array_buffer_store - { - // TODO(lucacasonato): we need to check here that the buffer is not - // already detached. We can not do that because V8 does not provide - // a way to check if a buffer is already detached. - if !buf.is_detachable() { - throw_type_error( - scope, - "item in transfered_array_buffers is not transferable", - ); - return; - } - let backing_store = buf.get_backing_store(); - buf.detach(); - let id = shared_array_buffer_store.insert(backing_store); - value_serializer.transfer_array_buffer(id, buf); - let id = v8::Number::new(scope, id as f64).into(); - transfered_array_buffers.set(scope, i, id); - } - } - } - - let must_throw = { - let scope = &mut v8::TryCatch::new(scope); - let ret = value_serializer.write_value(scope.get_current_context(), value); - if scope.has_caught() || scope.has_terminated() { - scope.rethrow(); - false - } else if let Some(true) = ret { - let vector = value_serializer.release(); - let zbuf: ZeroCopyBuf = vector.into(); - rv.set(to_v8(scope, zbuf).unwrap()); - false - } else { - // We throw the TypeError outside of the v8::TryCatch scope. - true - } - }; - - if must_throw { - throw_type_error(scope, "Failed to serialize response"); - } -} - -#[derive(Deserialize)] -#[serde(rename_all = "camelCase")] -struct SerializeDeserializeOptions<'a> { - host_objects: Option<serde_v8::Value<'a>>, - transfered_array_buffers: Option<serde_v8::Value<'a>>, -} - -fn deserialize( - scope: &mut v8::HandleScope, - args: v8::FunctionCallbackArguments, - mut rv: v8::ReturnValue, -) { - let zero_copy: ZeroCopyBuf = match serde_v8::from_v8(scope, args.get(0)) { - Ok(zbuf) => zbuf, - Err(_) => { - throw_type_error(scope, "Invalid argument 1"); - return; - } - }; - - let options: Option<SerializeDeserializeOptions> = - match serde_v8::from_v8(scope, args.get(1)) { - Ok(opts) => opts, - Err(_) => { - throw_type_error(scope, "Invalid argument 2"); - return; - } - }; - - let options = options.unwrap_or(SerializeDeserializeOptions { - host_objects: None, - transfered_array_buffers: None, - }); - - let host_objects = match options.host_objects { - Some(value) => match v8::Local::<v8::Array>::try_from(value.v8_value) { - Ok(host_objects) => Some(host_objects), - Err(_) => { - throw_type_error(scope, "host_objects not an array"); - return; - } - }, - None => None, - }; - - let transfered_array_buffers = match options.transfered_array_buffers { - Some(value) => match v8::Local::<v8::Array>::try_from(value.v8_value) { - Ok(transfered_array_buffers) => Some(transfered_array_buffers), - Err(_) => { - throw_type_error(scope, "transfered_array_buffers not an array"); - return; - } - }, - None => None, - }; - - let serialize_deserialize = Box::new(SerializeDeserialize { - host_objects, - error_callback: None, - }); - let mut value_deserializer = - v8::ValueDeserializer::new(scope, serialize_deserialize, &zero_copy); - - let parsed_header = value_deserializer - .read_header(scope.get_current_context()) - .unwrap_or_default(); - if !parsed_header { - let msg = v8::String::new(scope, "could not deserialize value").unwrap(); - let exception = v8::Exception::range_error(scope, msg); - scope.throw_exception(exception); - return; - } - - if let Some(transfered_array_buffers) = transfered_array_buffers { - let state_rc = JsRuntime::state(scope); - let state = state_rc.borrow_mut(); - if let Some(shared_array_buffer_store) = &state.shared_array_buffer_store { - for i in 0..transfered_array_buffers.length() { - let i = v8::Number::new(scope, i as f64).into(); - let id_val = transfered_array_buffers.get(scope, i).unwrap(); - let id = match id_val.number_value(scope) { - Some(id) => id as u32, - None => { - throw_type_error( - scope, - "item in transfered_array_buffers not number", - ); - return; - } - }; - if let Some(backing_store) = shared_array_buffer_store.take(id) { - let array_buffer = - v8::ArrayBuffer::with_backing_store(scope, &backing_store); - value_deserializer.transfer_array_buffer(id, array_buffer); - transfered_array_buffers.set(scope, id_val, array_buffer.into()); - } else { - throw_type_error( - scope, - "transfered array buffer not present in shared_array_buffer_store", - ); - return; - } - } - } - } - - let value = value_deserializer.read_value(scope.get_current_context()); - - match value { - Some(deserialized) => rv.set(deserialized), - None => { - let msg = v8::String::new(scope, "could not deserialize value").unwrap(); - let exception = v8::Exception::range_error(scope, msg); - scope.throw_exception(exception); - } - }; -} - -fn queue_microtask( - scope: &mut v8::HandleScope, - args: v8::FunctionCallbackArguments, - _rv: v8::ReturnValue, -) { - match v8::Local::<v8::Function>::try_from(args.get(0)) { - Ok(f) => scope.enqueue_microtask(f), - Err(_) => { - throw_type_error(scope, "Invalid argument"); - } - }; -} - -fn destructure_error( - scope: &mut v8::HandleScope, - args: v8::FunctionCallbackArguments, - mut rv: v8::ReturnValue, -) { - let js_error = JsError::from_v8_exception(scope, args.get(0)); - let object = serde_v8::to_v8(scope, js_error).unwrap(); - rv.set(object); -} - -fn terminate( - scope: &mut v8::HandleScope, - args: v8::FunctionCallbackArguments, - _rv: v8::ReturnValue, -) { - let state_rc = JsRuntime::state(scope); - let mut state = state_rc.borrow_mut(); - state.explicit_terminate_exception = - Some(v8::Global::new(scope, args.get(0))); - scope.terminate_execution(); -} - -fn apply_source_map( - scope: &mut v8::HandleScope, - args: v8::FunctionCallbackArguments, - mut rv: v8::ReturnValue, -) { - #[derive(Deserialize, Serialize)] - #[serde(rename_all = "camelCase")] - struct Location { - file_name: String, - line_number: u32, - column_number: u32, - } - let state_rc = JsRuntime::state(scope); - let state = state_rc.borrow(); - if let Some(source_map_getter) = &state.source_map_getter { - let mut location = match serde_v8::from_v8::<Location>(scope, args.get(0)) { - Ok(location) => location, - Err(error) => return throw_type_error(scope, error.to_string()), - }; - let (f, l, c, _) = apply_source_map_( - location.file_name, - location.line_number.into(), - location.column_number.into(), - &mut HashMap::new(), - source_map_getter.as_ref(), - ); - location.file_name = f; - location.line_number = l as u32; - location.column_number = c as u32; - rv.set(serde_v8::to_v8(scope, location).unwrap()); - } else { - rv.set(args.get(0)); - } -} - -fn create_host_object( - scope: &mut v8::HandleScope, - _args: v8::FunctionCallbackArguments, - mut rv: v8::ReturnValue, -) { - let template = v8::ObjectTemplate::new(scope); - template.set_internal_field_count(1); - if let Some(obj) = template.new_instance(scope) { - rv.set(obj.into()); - }; -} - /// Called by V8 during `JsRuntime::instantiate_module`. /// /// This function borrows `ModuleMap` from the isolate slot, @@ -1474,140 +455,8 @@ pub fn module_resolve_callback<'s>( None } -// Returns promise details or throw TypeError, if argument passed isn't a Promise. -// Promise details is a js_two elements array. -// promise_details = [State, Result] -// State = enum { Pending = 0, Fulfilled = 1, Rejected = 2} -// Result = PromiseResult<T> | PromiseError -fn get_promise_details( - scope: &mut v8::HandleScope, - args: v8::FunctionCallbackArguments, - mut rv: v8::ReturnValue, -) { - let promise = match v8::Local::<v8::Promise>::try_from(args.get(0)) { - Ok(val) => val, - Err(_) => { - throw_type_error(scope, "Invalid argument"); - return; - } - }; - - #[derive(Serialize)] - struct PromiseDetails<'s>(u32, Option<serde_v8::Value<'s>>); - - match promise.state() { - v8::PromiseState::Pending => { - rv.set(to_v8(scope, PromiseDetails(0, None)).unwrap()); - } - v8::PromiseState::Fulfilled => { - let promise_result = promise.result(scope); - rv.set( - to_v8(scope, PromiseDetails(1, Some(promise_result.into()))).unwrap(), - ); - } - v8::PromiseState::Rejected => { - let promise_result = promise.result(scope); - rv.set( - to_v8(scope, PromiseDetails(2, Some(promise_result.into()))).unwrap(), - ); - } - } -} - -// Based on https://github.com/nodejs/node/blob/1e470510ff74391d7d4ec382909ea8960d2d2fbc/src/node_util.cc -// Copyright Joyent, Inc. and other Node contributors. -// -// Permission is hereby granted, free of charge, to any person obtaining a -// copy of this software and associated documentation files (the -// "Software"), to deal in the Software without restriction, including -// without limitation the rights to use, copy, modify, merge, publish, -// distribute, sublicense, and/or sell copies of the Software, and to permit -// persons to whom the Software is furnished to do so, subject to the -// following conditions: -// -// The above copyright notice and this permission notice shall be included -// in all copies or substantial portions of the Software. -// -// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS -// OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF -// MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN -// NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, -// DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR -// OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE -// USE OR OTHER DEALINGS IN THE SOFTWARE. -fn get_proxy_details( - scope: &mut v8::HandleScope, - args: v8::FunctionCallbackArguments, - mut rv: v8::ReturnValue, -) { - // Return undefined if it's not a proxy. - let proxy = match v8::Local::<v8::Proxy>::try_from(args.get(0)) { - Ok(val) => val, - Err(_) => { - return; - } - }; - - let target = proxy.get_target(scope); - let handler = proxy.get_handler(scope); - let p: (serde_v8::Value, serde_v8::Value) = (target.into(), handler.into()); - rv.set(to_v8(scope, p).unwrap()); -} - -fn is_proxy( - scope: &mut v8::HandleScope, - args: v8::FunctionCallbackArguments, - mut rv: v8::ReturnValue, -) { - rv.set(v8::Boolean::new(scope, args.get(0).is_proxy()).into()) -} - pub fn throw_type_error(scope: &mut v8::HandleScope, message: impl AsRef<str>) { let message = v8::String::new(scope, message.as_ref()).unwrap(); let exception = v8::Exception::type_error(scope, message); scope.throw_exception(exception); } - -fn memory_usage( - scope: &mut v8::HandleScope, - _args: v8::FunctionCallbackArguments, - mut rv: v8::ReturnValue, -) { - let stats = get_memory_usage(scope); - rv.set(to_v8(scope, stats).unwrap()); -} - -// HeapStats stores values from a isolate.get_heap_statistics() call -#[derive(Serialize)] -#[serde(rename_all = "camelCase")] -struct MemoryUsage { - rss: usize, - heap_total: usize, - heap_used: usize, - external: usize, - // TODO: track ArrayBuffers, would require using a custom allocator to track - // but it's otherwise a subset of external so can be indirectly tracked - // array_buffers: usize, -} -fn get_memory_usage(isolate: &mut v8::Isolate) -> MemoryUsage { - let mut s = v8::HeapStatistics::default(); - isolate.get_heap_statistics(&mut s); - - MemoryUsage { - rss: s.total_physical_size(), - heap_total: s.total_heap_size(), - heap_used: s.used_heap_size(), - external: s.external_memory(), - } -} - -fn op_names( - scope: &mut v8::HandleScope, - _args: v8::FunctionCallbackArguments, - mut rv: v8::ReturnValue, -) { - let state_rc = JsRuntime::state(scope); - let state = state_rc.borrow(); - let names: Vec<_> = state.op_ctxs.iter().map(|o| o.decl.name).collect(); - rv.set(serde_v8::to_v8(scope, names).unwrap()); -} |