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There is no reason for this to be in C++. Using JavaScript means that the code is more accessible to more developers, which is important for any Node.js feature. This also simplifies the code significantly in some areas. On the technical side, this potentially also enables making some of the file system operations that are involved asynchronous. PR-URL: https://github.com/nodejs/node/pull/32201 Reviewed-By: Bradley Farias <bradley.meck@gmail.com> Reviewed-By: Guy Bedford <guybedford@gmail.com>
209 lines
10 KiB
C++
209 lines
10 KiB
C++
#ifndef SRC_NODE_ERRORS_H_
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#define SRC_NODE_ERRORS_H_
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#if defined(NODE_WANT_INTERNALS) && NODE_WANT_INTERNALS
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#include "env.h"
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#include "v8.h"
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// Use ostringstream to print exact-width integer types
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// because the format specifiers are not available on AIX.
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#include <sstream>
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namespace node {
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using v8::Local;
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using v8::Message;
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using v8::Value;
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enum ErrorHandlingMode { CONTEXTIFY_ERROR, FATAL_ERROR, MODULE_ERROR };
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void AppendExceptionLine(Environment* env,
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Local<Value> er,
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Local<Message> message,
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enum ErrorHandlingMode mode);
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[[noreturn]] void FatalError(const char* location, const char* message);
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void OnFatalError(const char* location, const char* message);
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// Helpers to construct errors similar to the ones provided by
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// lib/internal/errors.js.
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// Example: with `V(ERR_INVALID_ARG_TYPE, TypeError)`, there will be
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// `node::ERR_INVALID_ARG_TYPE(isolate, "message")` returning
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// a `Local<Value>` containing the TypeError with proper code and message
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#define ERRORS_WITH_CODE(V) \
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V(ERR_BUFFER_CONTEXT_NOT_AVAILABLE, Error) \
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V(ERR_BUFFER_OUT_OF_BOUNDS, RangeError) \
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V(ERR_BUFFER_TOO_LARGE, Error) \
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V(ERR_CONSTRUCT_CALL_REQUIRED, TypeError) \
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V(ERR_CONSTRUCT_CALL_INVALID, TypeError) \
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V(ERR_CRYPTO_UNKNOWN_CIPHER, Error) \
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V(ERR_CRYPTO_UNKNOWN_DH_GROUP, Error) \
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V(ERR_EXECUTION_ENVIRONMENT_NOT_AVAILABLE, Error) \
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V(ERR_INVALID_ARG_VALUE, TypeError) \
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V(ERR_OSSL_EVP_INVALID_DIGEST, Error) \
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V(ERR_INVALID_ARG_TYPE, TypeError) \
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V(ERR_INVALID_TRANSFER_OBJECT, TypeError) \
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V(ERR_MEMORY_ALLOCATION_FAILED, Error) \
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V(ERR_MISSING_ARGS, TypeError) \
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V(ERR_MISSING_MESSAGE_PORT_IN_TRANSFER_LIST, TypeError) \
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V(ERR_MISSING_PASSPHRASE, TypeError) \
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V(ERR_MISSING_PLATFORM_FOR_WORKER, Error) \
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V(ERR_NON_CONTEXT_AWARE_DISABLED, Error) \
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V(ERR_OUT_OF_RANGE, RangeError) \
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V(ERR_SCRIPT_EXECUTION_INTERRUPTED, Error) \
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V(ERR_SCRIPT_EXECUTION_TIMEOUT, Error) \
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V(ERR_STRING_TOO_LONG, Error) \
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V(ERR_TLS_INVALID_PROTOCOL_METHOD, TypeError) \
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V(ERR_TRANSFERRING_EXTERNALIZED_SHAREDARRAYBUFFER, TypeError) \
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V(ERR_TLS_PSK_SET_IDENTIY_HINT_FAILED, Error) \
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V(ERR_VM_MODULE_CACHED_DATA_REJECTED, Error) \
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#define V(code, type) \
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inline v8::Local<v8::Value> code(v8::Isolate* isolate, \
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const char* message) { \
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v8::Local<v8::String> js_code = OneByteString(isolate, #code); \
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v8::Local<v8::String> js_msg = OneByteString(isolate, message); \
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v8::Local<v8::Object> e = \
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v8::Exception::type(js_msg)->ToObject( \
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isolate->GetCurrentContext()).ToLocalChecked(); \
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e->Set(isolate->GetCurrentContext(), OneByteString(isolate, "code"), \
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js_code).Check(); \
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return e; \
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} \
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inline void THROW_ ## code(v8::Isolate* isolate, const char* message) { \
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isolate->ThrowException(code(isolate, message)); \
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} \
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inline void THROW_ ## code(Environment* env, const char* message) { \
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THROW_ ## code(env->isolate(), message); \
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}
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ERRORS_WITH_CODE(V)
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#undef V
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// Errors with predefined static messages
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#define PREDEFINED_ERROR_MESSAGES(V) \
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V(ERR_BUFFER_CONTEXT_NOT_AVAILABLE, \
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"Buffer is not available for the current Context") \
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V(ERR_CONSTRUCT_CALL_INVALID, "Constructor cannot be called") \
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V(ERR_CONSTRUCT_CALL_REQUIRED, "Cannot call constructor without `new`") \
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V(ERR_CRYPTO_UNKNOWN_CIPHER, "Unknown cipher") \
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V(ERR_CRYPTO_UNKNOWN_DH_GROUP, "Unknown DH group") \
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V(ERR_EXECUTION_ENVIRONMENT_NOT_AVAILABLE, \
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"Context not associated with Node.js environment") \
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V(ERR_INVALID_TRANSFER_OBJECT, "Found invalid object in transferList") \
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V(ERR_MEMORY_ALLOCATION_FAILED, "Failed to allocate memory") \
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V(ERR_OSSL_EVP_INVALID_DIGEST, "Invalid digest used") \
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V(ERR_MISSING_MESSAGE_PORT_IN_TRANSFER_LIST, \
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"MessagePort was found in message but not listed in transferList") \
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V(ERR_MISSING_PLATFORM_FOR_WORKER, \
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"The V8 platform used by this instance of Node does not support " \
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"creating Workers") \
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V(ERR_NON_CONTEXT_AWARE_DISABLED, \
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"Loading non context-aware native modules has been disabled") \
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V(ERR_SCRIPT_EXECUTION_INTERRUPTED, \
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"Script execution was interrupted by `SIGINT`") \
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V(ERR_TRANSFERRING_EXTERNALIZED_SHAREDARRAYBUFFER, \
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"Cannot serialize externalized SharedArrayBuffer") \
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V(ERR_TLS_PSK_SET_IDENTIY_HINT_FAILED, "Failed to set PSK identity hint")
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#define V(code, message) \
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inline v8::Local<v8::Value> code(v8::Isolate* isolate) { \
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return code(isolate, message); \
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} \
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inline void THROW_ ## code(v8::Isolate* isolate) { \
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isolate->ThrowException(code(isolate, message)); \
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} \
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inline void THROW_ ## code(Environment* env) { \
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THROW_ ## code(env->isolate()); \
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}
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PREDEFINED_ERROR_MESSAGES(V)
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#undef V
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// Errors with predefined non-static messages
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inline void THROW_ERR_SCRIPT_EXECUTION_TIMEOUT(Environment* env,
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int64_t timeout) {
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std::ostringstream message;
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message << "Script execution timed out after ";
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message << timeout << "ms";
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THROW_ERR_SCRIPT_EXECUTION_TIMEOUT(env, message.str().c_str());
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}
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inline v8::Local<v8::Value> ERR_BUFFER_TOO_LARGE(v8::Isolate* isolate) {
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char message[128];
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snprintf(message, sizeof(message),
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"Cannot create a Buffer larger than 0x%zx bytes",
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v8::TypedArray::kMaxLength);
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return ERR_BUFFER_TOO_LARGE(isolate, message);
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}
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inline v8::Local<v8::Value> ERR_STRING_TOO_LONG(v8::Isolate* isolate) {
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char message[128];
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snprintf(message, sizeof(message),
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"Cannot create a string longer than 0x%x characters",
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v8::String::kMaxLength);
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return ERR_STRING_TOO_LONG(isolate, message);
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}
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#define THROW_AND_RETURN_IF_NOT_BUFFER(env, val, prefix) \
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do { \
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if (!Buffer::HasInstance(val)) \
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return node::THROW_ERR_INVALID_ARG_TYPE(env, \
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prefix " must be a buffer"); \
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} while (0)
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#define THROW_AND_RETURN_IF_NOT_STRING(env, val, prefix) \
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do { \
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if (!val->IsString()) \
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return node::THROW_ERR_INVALID_ARG_TYPE(env, \
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prefix " must be a string"); \
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} while (0)
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namespace errors {
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class TryCatchScope : public v8::TryCatch {
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public:
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enum class CatchMode { kNormal, kFatal };
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explicit TryCatchScope(Environment* env, CatchMode mode = CatchMode::kNormal)
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: v8::TryCatch(env->isolate()), env_(env), mode_(mode) {}
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~TryCatchScope();
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// Since the dtor is not virtual we need to make sure no one creates
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// object of it in the free store that might be held by polymorphic pointers.
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void* operator new(std::size_t count) = delete;
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void* operator new[](std::size_t count) = delete;
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TryCatchScope(TryCatchScope&) = delete;
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TryCatchScope(TryCatchScope&&) = delete;
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TryCatchScope operator=(TryCatchScope&) = delete;
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TryCatchScope operator=(TryCatchScope&&) = delete;
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private:
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Environment* env_;
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CatchMode mode_;
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};
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// Trigger the global uncaught exception handler `process._fatalException`
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// in JS land (which emits the 'uncaughtException' event). If that returns
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// true, continue program execution, otherwise exit the process.
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void TriggerUncaughtException(v8::Isolate* isolate,
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const v8::TryCatch& try_catch);
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void TriggerUncaughtException(v8::Isolate* isolate,
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Local<Value> error,
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Local<Message> message,
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bool from_promise = false);
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const char* errno_string(int errorno);
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void PerIsolateMessageListener(v8::Local<v8::Message> message,
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v8::Local<v8::Value> error);
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void DecorateErrorStack(Environment* env,
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const errors::TryCatchScope& try_catch);
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} // namespace errors
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} // namespace node
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#endif // defined(NODE_WANT_INTERNALS) && NODE_WANT_INTERNALS
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#endif // SRC_NODE_ERRORS_H_
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