node/src/node_errors.h at cpp-bash · joyeecheung/node · GitHub

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#ifndef SRC_NODE_ERRORS_H_

#define SRC_NODE_ERRORS_H_

#if defined(NODE_WANT_INTERNALS) && NODE_WANT_INTERNALS

#include "node.h"

#include "util-inl.h"

#include "env-inl.h"

#include "v8.h"

// Use ostringstream to print exact-width integer types

// because the format specifiers are not available on AIX.

#include <sstream>

namespace node {

using v8::Local;

using v8::Message;

using v8::Value;

enum ErrorHandlingMode { CONTEXTIFY_ERROR, FATAL_ERROR, MODULE_ERROR };

void AppendExceptionLine(Environment* env,

Local<Value> er,

Local<Message> message,

enum ErrorHandlingMode mode);

[[noreturn]] void FatalError(const char* location, const char* message);

void OnFatalError(const char* location, const char* message);

void PrintErrorString(const char* format, ...);

void ReportException(Environment* env, const v8::TryCatch& try_catch);

void ReportException(Environment* env,

Local<Value> er,

Local<Message> message);

void FatalException(v8::Isolate* isolate,

Local<Value> error,

Local<Message> message);

void FatalException(v8::Isolate* isolate,

Local<Value> error,

Local<Message> message,

bool from_promise);

// Helpers to construct errors similar to the ones provided by

// lib/internal/errors.js.

// Example: with `V(ERR_INVALID_ARG_TYPE, TypeError)`, there will be

// `node::ERR_INVALID_ARG_TYPE(isolate, "message")` returning

// a `Local<Value>` containing the TypeError with proper code and message

#define ERRORS_WITH_CODE(V) \

V(ERR_BUFFER_CONTEXT_NOT_AVAILABLE, Error) \

V(ERR_BUFFER_OUT_OF_BOUNDS, RangeError) \

V(ERR_BUFFER_TOO_LARGE, Error) \

V(ERR_CANNOT_TRANSFER_OBJECT, TypeError) \

V(ERR_CONSTRUCT_CALL_REQUIRED, Error) \

V(ERR_INVALID_ARG_VALUE, TypeError) \

V(ERR_INVALID_ARG_TYPE, TypeError) \

V(ERR_INVALID_MODULE_SPECIFIER, TypeError) \

V(ERR_INVALID_PACKAGE_CONFIG, SyntaxError) \

V(ERR_INVALID_TRANSFER_OBJECT, TypeError) \

V(ERR_MEMORY_ALLOCATION_FAILED, Error) \

V(ERR_MISSING_ARGS, TypeError) \

V(ERR_MISSING_MESSAGE_PORT_IN_TRANSFER_LIST, TypeError) \

V(ERR_MISSING_PASSPHRASE, TypeError) \

V(ERR_MISSING_PLATFORM_FOR_WORKER, Error) \

V(ERR_MODULE_NOT_FOUND, Error) \

V(ERR_OUT_OF_RANGE, RangeError) \

V(ERR_SCRIPT_EXECUTION_INTERRUPTED, Error) \

V(ERR_SCRIPT_EXECUTION_TIMEOUT, Error) \

V(ERR_STRING_TOO_LONG, Error) \

V(ERR_TLS_INVALID_PROTOCOL_METHOD, TypeError) \

V(ERR_TRANSFERRING_EXTERNALIZED_SHAREDARRAYBUFFER, TypeError) \

#define V(code, type) \

inline v8::Local<v8::Value> code(v8::Isolate* isolate, \

const char* message) { \

v8::Local<v8::String> js_code = OneByteString(isolate, #code); \

v8::Local<v8::String> js_msg = OneByteString(isolate, message); \

v8::Local<v8::Object> e = \

v8::Exception::type(js_msg)->ToObject( \

isolate->GetCurrentContext()).ToLocalChecked(); \

e->Set(isolate->GetCurrentContext(), OneByteString(isolate, "code"), \

js_code).Check(); \

return e; \

} \

inline void THROW_ ## code(v8::Isolate* isolate, const char* message) { \

isolate->ThrowException(code(isolate, message)); \

} \

inline void THROW_ ## code(Environment* env, const char* message) { \

THROW_ ## code(env->isolate(), message); \

}

ERRORS_WITH_CODE(V)

#undef V

// Errors with predefined static messages

#define PREDEFINED_ERROR_MESSAGES(V) \

V(ERR_BUFFER_CONTEXT_NOT_AVAILABLE, \

"Buffer is not available for the current Context") \

V(ERR_CANNOT_TRANSFER_OBJECT, "Cannot transfer object of unsupported type")\

V(ERR_CONSTRUCT_CALL_REQUIRED, "Cannot call constructor without `new`") \

V(ERR_INVALID_TRANSFER_OBJECT, "Found invalid object in transferList") \

V(ERR_MEMORY_ALLOCATION_FAILED, "Failed to allocate memory") \

V(ERR_MISSING_MESSAGE_PORT_IN_TRANSFER_LIST, \

"MessagePort was found in message but not listed in transferList") \

V(ERR_MISSING_PLATFORM_FOR_WORKER, \

"The V8 platform used by this instance of Node does not support " \

"creating Workers") \

V(ERR_SCRIPT_EXECUTION_INTERRUPTED, \

"Script execution was interrupted by `SIGINT`") \

V(ERR_TRANSFERRING_EXTERNALIZED_SHAREDARRAYBUFFER, \

"Cannot serialize externalized SharedArrayBuffer") \

#define V(code, message) \

inline v8::Local<v8::Value> code(v8::Isolate* isolate) { \

return code(isolate, message); \

} \

inline void THROW_ ## code(v8::Isolate* isolate) { \

isolate->ThrowException(code(isolate, message)); \

} \

inline void THROW_ ## code(Environment* env) { \

THROW_ ## code(env->isolate()); \

}

PREDEFINED_ERROR_MESSAGES(V)

#undef V

// Errors with predefined non-static messages

inline void THROW_ERR_SCRIPT_EXECUTION_TIMEOUT(Environment* env,

int64_t timeout) {

std::ostringstream message;

message << "Script execution timed out after ";

message << timeout << "ms";

THROW_ERR_SCRIPT_EXECUTION_TIMEOUT(env, message.str().c_str());

}

inline v8::Local<v8::Value> ERR_BUFFER_TOO_LARGE(v8::Isolate* isolate) {

char message[128];

snprintf(message, sizeof(message),

"Cannot create a Buffer larger than 0x%zx bytes",

v8::TypedArray::kMaxLength);

return ERR_BUFFER_TOO_LARGE(isolate, message);

}

inline v8::Local<v8::Value> ERR_STRING_TOO_LONG(v8::Isolate* isolate) {

char message[128];

snprintf(message, sizeof(message),

"Cannot create a string longer than 0x%x characters",

v8::String::kMaxLength);

return ERR_STRING_TOO_LONG(isolate, message);

}

#define THROW_AND_RETURN_IF_NOT_BUFFER(env, val, prefix) \

do { \

if (!Buffer::HasInstance(val)) \

return node::THROW_ERR_INVALID_ARG_TYPE(env, \

prefix " must be a buffer"); \

} while (0)

#define THROW_AND_RETURN_IF_NOT_STRING(env, val, prefix) \

do { \

if (!val->IsString()) \

return node::THROW_ERR_INVALID_ARG_TYPE(env, \

prefix " must be a string"); \

} while (0)

namespace errors {

class TryCatchScope : public v8::TryCatch {

public:

enum class CatchMode { kNormal, kFatal };

explicit TryCatchScope(Environment* env, CatchMode mode = CatchMode::kNormal)

: v8::TryCatch(env->isolate()), env_(env), mode_(mode) {}

~TryCatchScope();

// Since the dtor is not virtual we need to make sure no one creates

// object of it in the free store that might be held by polymorphic pointers.

void* operator new(std::size_t count) = delete;

void* operator new[](std::size_t count) = delete;

TryCatchScope(TryCatchScope&) = delete;

TryCatchScope(TryCatchScope&&) = delete;

TryCatchScope operator=(TryCatchScope&) = delete;

TryCatchScope operator=(TryCatchScope&&) = delete;

private:

Environment* env_;

CatchMode mode_;

};

const char* errno_string(int errorno);

void PerIsolateMessageListener(v8::Local<v8::Message> message,

v8::Local<v8::Value> error);

} // namespace errors

void DecorateErrorStack(Environment* env,

const errors::TryCatchScope& try_catch);

} // namespace node

#endif // defined(NODE_WANT_INTERNALS) && NODE_WANT_INTERNALS

#endif // SRC_NODE_ERRORS_H_

node/src/node_errors.h at cpp-bash · joyeecheung/node · GitHub

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