react-native/ReactCommon/cxxreact/JSCHelpers.h

97 lines
2.5 KiB
C++

// Copyright 2004-present Facebook. All Rights Reserved.
#pragma once
#include "Executor.h"
#include "Value.h"
#include <JavaScriptCore/JSContextRef.h>
#include <JavaScriptCore/JSObjectRef.h>
#include <JavaScriptCore/JSValueRef.h>
#include <stdexcept>
#include <algorithm>
namespace facebook {
namespace react {
inline void throwJSExecutionException(const char* msg) {
throw JSException(msg);
}
template <typename... Args>
inline void throwJSExecutionException(const char* fmt, Args... args) {
int msgSize = snprintf(nullptr, 0, fmt, args...);
msgSize = std::min(512, msgSize + 1);
char *msg = (char*) alloca(msgSize);
snprintf(msg, msgSize, fmt, args...);
throw JSException(msg);
}
template <typename... Args>
inline void throwJSExecutionExceptionWithStack(const char* msg, const char* stack) {
throw JSException(msg, stack);
}
void installGlobalFunction(
JSGlobalContextRef ctx,
const char* name,
JSObjectCallAsFunctionCallback callback);
JSValueRef makeJSCException(
JSContextRef ctx,
const char* exception_text);
String jsStringFromBigString(const JSBigString& bigstr);
JSValueRef evaluateScript(
JSContextRef ctx,
JSStringRef script,
JSStringRef sourceURL);
#if WITH_FBJSCEXTENSIONS
JSValueRef evaluateSourceCode(
JSContextRef ctx,
JSSourceCodeRef source,
JSStringRef sourceURL);
#endif
void formatAndThrowJSException(
JSContextRef ctx,
JSValueRef exn,
JSStringRef sourceURL);
JSValueRef makeJSError(JSContextRef ctx, const char *error);
JSValueRef translatePendingCppExceptionToJSError(JSContextRef ctx, const char *exceptionLocation);
JSValueRef translatePendingCppExceptionToJSError(JSContextRef ctx, JSObjectRef jsFunctionCause);
template<JSValueRef (method)(JSContextRef ctx,
JSObjectRef function,
JSObjectRef thisObject,
size_t argumentCount,
const JSValueRef arguments[],
JSValueRef *exception)>
inline JSObjectCallAsFunctionCallback exceptionWrapMethod() {
struct funcWrapper {
static JSValueRef call(
JSContextRef ctx,
JSObjectRef function,
JSObjectRef thisObject,
size_t argumentCount,
const JSValueRef arguments[],
JSValueRef *exception) {
try {
return (*method)(ctx, function, thisObject, argumentCount, arguments, exception);
} catch (...) {
*exception = translatePendingCppExceptionToJSError(ctx, function);
return JSValueMakeUndefined(ctx);
}
}
};
return &funcWrapper::call;
}
} }