学习 SpiderMonkey
规则：
js逻辑代码中使用的是jsval类型
计算结果和传递的行参都是RootedValue类型， RootedObject， JSString， Number或其他类型的值都保存在RootedValue类型的变量中。
json是RootedObject类型
数组也是RootedObject类型 用 JS_IsArrayObject 判断是否为数组
数组长度通过JS_GetArrayLength获取
元素通过JS_GetElement获取
js to c++
value.isNumber()，JS::ToNumber()
isObject()，JS_ValueToObject()
v.isString(); JSString *tmp =JS::ToString(cx, v); JSStringWrapper str(tmp); *ret = str.get();
读取json类型值：
bool jsval_to_vector2(JSContext *cx, JS::HandleValue vp/*传入js类型的值， 该值可能是一个js对象或者是一个js变量*/, cocos2d::Vec2* ret/*传出*/)
{
//创建js对象
JS::RootedObject tmp(cx);
//创建js变量
JS::RootedValue jsx(cx);
JS::RootedValue jsy(cx);
double x, y;
bool ok = vp.isObject() &&//vp是否可转为对象
JS_ValueToObject(cx, vp, &tmp) &&//vp转为对象
JS_GetProperty(cx, tmp, "x", &jsx) &&//获取json属性 中的js变量值
JS_GetProperty(cx, tmp, "y", &jsy) &&
JS::ToNumber(cx, jsx, &x) &&//js变量转C++浮点
JS::ToNumber(cx, jsy, &y);
JSB_PRECONDITION3(ok, cx, false, "Error processing arguments");
ret->x = (float)x;//赋值
ret->y = (float)y;
return true;
}读取js数组：
bool jsval_to_std_vector_int( JSContext *cx, JS::HandleValue vp, std::vector<int>* ret)
{
//创建js 对象
JS::RootedObject jsobj(cx);
//如果能转为对象 则转为对象 计算结果得到的都是RootedValue， RootedObject， JSString， Number 或其他类型的值都保存在RootedValue中
bool ok = vp.isObject() && JS_ValueToObject( cx, vp, &jsobj );
JSB_PRECONDITION3( ok, cx, false, "Error converting value to object");
JSB_PRECONDITION3( jsobj && JS_IsArrayObject( cx, jsobj), cx, false, "Object must be an array");
uint32_t len = 0;
//获取对象的数组长度
JS_GetArrayLength(cx, jsobj, &len);
for (uint32_t i=0; i < len; i++)
{
//创建js类型变量
JS::RootedValue value(cx);
if (JS_GetElement(cx, jsobj, i, &value))
{
if (value.isNumber())
{
double number = 0.0;
//转类型
ok = JS::ToNumber(cx, value, &number);
if (ok)
{
ret->push_back(static_cast<int>(number));
}
}
else
{
JS_ReportError(cx, "not supported type in array");
return false;
}
}
}
return true;
}
c++ to js
如果是 obj JS_NewObject JS_DefineProperty OBJECT_TO_JSVAL
如果是Array JS_NewArrayObject JS_SetElement OBJECT_TO_JSVAL
int32_to_jsval
std_string_to_jsval
创建json类型值：
jsval vector2_to_jsval(JSContext *cx, const cocos2d::Vec2& v)
{
//创建一个js对象
JS::RootedObject proto(cx);
JS::RootedObject parent(cx);
JS::RootedObject tmp(cx, JS_NewObject(cx, NULL, proto, parent));
if (!tmp) return JSVAL_NULL;
//定义对象的属性x和y
bool ok = JS_DefineProperty(cx, tmp, "x", v.x, JSPROP_ENUMERATE | JSPROP_PERMANENT) &&
JS_DefineProperty(cx, tmp, "y", v.y, JSPROP_ENUMERATE | JSPROP_PERMANENT);
if (ok) {
//返回一个jsval值
return OBJECT_TO_JSVAL(tmp);
}
return JSVAL_NULL;
}
创建一个js数组
jsval std_vector_int_to_jsval( JSContext *cx, const std::vector<int>& v)
{
JS::RootedObject jsretArr(cx, JS_NewArrayObject(cx, 0));
int i = 0;
for (const int obj : v)
{
JS::RootedValue arrElement(cx);
arrElement = int32_to_jsval(cx, obj);
if (!JS_SetElement(cx, jsretArr, i, arrElement)) {
break;
}
++i;
}
return OBJECT_TO_JSVAL(jsretArr);
}
全局函数 c++调js js调c++
// // jsb_kenko_auto.h // Fishing2d36JSB // // Created by TinyUlt on 11/16/15. // // #ifndef jsb_jsb_kenko_auto_h #define jsb_jsb_kenko_auto_h #include "cocos2d.h" #include "jsapi.h" #include "jsfriendapi.h" std::string os_info(); bool jsb_os_info(JSContext *cx, uint32_t argc, JS::Value *vp); bool jsb_callback(JSContext *cx, uint32_t argc, JS::Value *vp); void register_jsb_kenko_all(JSContext* cx, JS::HandleObject obj); #endif
//
// jsb_kenko_auto.cpp
// Fishing2d36JSB
//
// Created by TinyUlt on 11/16/15.
//
//
#include "jsb_kenko_auto.h"
#include "cocos2d_specifics.hpp"
std::string os_info() {
CCLOG("it's c++ os_info here");
return "os_info";
}
bool jsb_os_info(JSContext *cx, uint32_t argc, JS::Value *vp) {
JS::CallArgs args = JS::CallArgsFromVp(argc, vp);
if (argc == 0) {
std::string ret = os_info();
jsval jsret = JSVAL_NULL;
jsret = std_string_to_jsval(cx, ret);
args.rval().set(jsret);
return true;
}
JS_ReportError(cx, "js_FishAlg_FishAlg_getOutRotation3D : wrong number of arguments: %d, was expecting %d", argc, 0);
return false;
}
bool jsb_callback(JSContext *cx, uint32_t argc, JS::Value *vp) {
CCLOG("it's c++ testCallback here");
JSContext* jc = ScriptingCore::getInstance()->getGlobalContext();
// 注释部分适合有对象化的调用
// 参考：http://www.tairan.com/archives/4902
//jsval v[2];
//v[0] = int32_to_jsval(jc, 32);
//v[1] = int32_to_jsval(jc, 12);
// 通过 ScriptingCore 封装好的方法实现回调，可以帮助我们节省很多细节上的研究
//js_proxy_t * p = jsb_get_native_proxy();
//return ScriptingCore::getInstance()->executeFunctionWithOwner(OBJECT_TO_JSVAL(p->obj), "cpp_callback", 2, v); //2是参数个数，v是参数列表
//找到一个更适合全局函数的方法
jsval ret;
return ScriptingCore::getInstance()->evalString("cpp_callback(2,3)", &ret);
}
void register_jsb_kenko_all(JSContext *cx, JS::HandleObject obj) {
JS_DefineFunction(cx, obj, "os_Info", jsb_os_info, 0, 0); //生成名为osInfo的js全局函数
JS_DefineFunction(cx, obj, "test_cpp_callback", jsb_callback, 0, 0);
// JS_DefineFunction(cx, tmpObj, "getInstance", js_PlistParser_getInstance, 0, JSPROP_READONLY | JSPROP_PERMANENT);
}
function cpp_callback(a, b) {
cc.log("cpp return two integer: " + a + " " + b);
}
cc.log("js get from c++: " + os_Info());
test_cpp_callback();
c++类中的回调函数
//
// Network.h
// cocos2d_libs
//
// Created by TinyUlt on 11/16/15.
//
//
#ifndef __cocos2d_libs__Network__
#define __cocos2d_libs__Network__
#include <stdio.h>
class Network{
public:
Network();
~Network();
bool OnMessage();
};
#endif /* defined(__cocos2d_libs__Network__) */
//
// Network.cpp
// cocos2d_libs
//
// Created by TinyUlt on 11/16/15.
//
//
#include "Network.h"
#include "cocos2d.h"
#include "jsapi.h"
#include "jsfriendapi.h"
#include "cocos2d_specifics.hpp"
Network::Network(){
}
Network::~Network(){
}
bool Network::OnMessage(){
js_proxy_t * p = jsb_get_native_proxy(this);
jsval retval;
JSContext* jc = ScriptingCore::getInstance()->getGlobalContext();
// 定义参数，由两个参数
jsval v[] = {
v[0] = int32_to_jsval(jc, 32),
v[1] =UINT_TO_JSVAL(88)
};
// 通过 ScriptingCore 封装好的方法实现回调，可以帮助我们节省很多细节上的研究
ScriptingCore::getInstance()->executeFunctionWithOwner(OBJECT_TO_JSVAL(p->obj), "callback", 2, v);
return true;
}
network.callback = function (i, j) {
log("network.callback " + i + j);
}
network.OnMessage();
js函数传给c++ 用于函数回调
// // jsb_JS_APP_CB.hpp // cocos2d_js_bindings // // Created by TinyUlt on 1/9/16. // // #ifndef jsb_JS_APP_CB_hpp #define jsb_JS_APP_CB_hpp #include "jsapi.h" #include "jsfriendapi.h" void register_all_js_cpp_cb(JSContext* cx, JS::HandleObject global); #endif /* jsb_JS_APP_CB_hpp */
//
// jsb_JS_APP_CB.cpp
// cocos2d_js_bindings
//
// Created by TinyUlt on 1/9/16.
//
//
#include "jsb_JS_APP_CB.hpp"
#if (CC_TARGET_PLATFORM == CC_PLATFORM_ANDROID || CC_TARGET_PLATFORM == CC_PLATFORM_IOS || CC_TARGET_PLATFORM == CC_PLATFORM_WIN32)
#include "ScriptingCore.h"
#include "cocos2d_specifics.hpp"
#include "jsb_TinyJSWork.hpp"
#include "TinyJSWork.h"
using namespace cocos2d;
static bool jsb_applyStorePay(JSContext *cx, uint32_t argc, jsval *vp)
{
JSObject *obj = JS_THIS_OBJECT(cx, vp);
js_proxy_t *proxy = jsb_get_js_proxy(obj);
TinyJSWork* cobj = (TinyJSWork *)(proxy ? proxy->ptr : NULL);
JSB_PRECONDITION2( cobj, cx, false, "Invalid Native Object");
if(true){
JS::CallArgs args = JS::CallArgsFromVp(argc, vp);
int _type;
jsval_to_int32(cx, args.get(0), &_type);
int _proID;
jsval_to_int32(cx, args.get(1), &_proID);
int _gameID;
jsval_to_int32(cx, args.get(2), &_gameID);
std::shared_ptr<JSFunctionWrapper> func(new JSFunctionWrapper(cx, obj, args.get(3)));
cobj->applyStorePay((PurchasePlatform)_type, (ProductID)_proID, _gameID,[=](int purType, int proID, int gameID,bool paySuc)->bool{
Director::getInstance()->getScheduler()->performFunctionInCocosThread([=] {
JSB_AUTOCOMPARTMENT_WITH_GLOBAL_OBJCET
jsval arg[4];
arg[0] = int32_to_jsval(cx, purType);
arg[1] = int32_to_jsval(cx, proID);
arg[2] = int32_to_jsval(cx, gameID);
arg[3] = bool_to_jsval(cx, paySuc);
JS::RootedValue rval(cx);
CCLOG("执行js中的 applyStorePay 设置的回调函数");
bool ok = func->invoke(4, arg, &rval);
if (!ok && JS_IsExceptionPending(cx)) {
JS_ReportPendingException(cx);
}
});
return true;
});
return true;
}
}
extern JSObject* jsb_TinyJSWork_prototype;
void register_all_js_cpp_cb(JSContext* cx, JS::HandleObject global)
{
JS_DefineFunction(cx, JS::RootedObject(cx, jsb_TinyJSWork_prototype), "applyStorePay", jsb_applyStorePay, 4, JSPROP_ENUMERATE | JSPROP_PERMANENT);
}
#endif
typedef void TinyJSStoreCallback(int purType, int proID, int gameID,bool paySuc);
//支付接口
void applyStorePay(PurchasePlatform type, ProductID proID,int gameID, std::function<TinyJSStoreCallback> jsCallback);
测试1
void SwimAlg::test1(){
}
bool js_SwimAlg_SwimAlg_test1(JSContext *cx, uint32_t argc/*形参个数*/, jsval *vp)
{
//得到参数数组
JS::CallArgs args = JS::CallArgsFromVp(argc, vp);
//js对象转化为c++对象
JS::RootedObject obj(cx, args.thisv().toObjectOrNull());
js_proxy_t *proxy = jsb_get_js_proxy(obj);
SwimAlg* cobj = (SwimAlg *)(proxy ? proxy->ptr : NULL);
//如果不为对象，则报错
JSB_PRECONDITION2( cobj, cx, false, "js_SwimAlg_SwimAlg_test1 : Invalid Native Object");
///
//如果参数个数为0
if (argc == 0) {
//执行c++函数
cobj->test1();
//设置返回类型为未定义的
args.rval().setUndefined();
return true;
}
//如果传入的行参不等于0 则报错
JS_ReportError(cx, "js_SwimAlg_SwimAlg_test1 : wrong number of arguments: %d, was expecting %d", argc, 0);
return false;
}
测试2
void SwimAlg::test2(int i){
}
bool js_SwimAlg_SwimAlg_test2(JSContext *cx, uint32_t argc, jsval *vp)
{
JS::CallArgs args = JS::CallArgsFromVp(argc, vp);
bool ok = true;
JS::RootedObject obj(cx, args.thisv().toObjectOrNull());
js_proxy_t *proxy = jsb_get_js_proxy(obj);
SwimAlg* cobj = (SwimAlg *)(proxy ? proxy->ptr : NULL);
JSB_PRECONDITION2( cobj, cx, false, "js_SwimAlg_SwimAlg_test2 : Invalid Native Object");
//如果参数有1个
if (argc == 1) {
int arg0;
//js的整型转c++整型
ok &= jsval_to_int32(cx, args.get(0), (int32_t *)&arg0);
JSB_PRECONDITION2(ok, cx, false, "js_SwimAlg_SwimAlg_test2 : Error processing arguments");
//传入参数
cobj->test2(arg0);
args.rval().setUndefined();
return true;
}
JS_ReportError(cx, "js_SwimAlg_SwimAlg_test2 : wrong number of arguments: %d, was expecting %d", argc, 1);
return false;
}
测试3
void SwimAlg::test3(int i, float f){
}
bool js_SwimAlg_SwimAlg_test3(JSContext *cx, uint32_t argc, jsval *vp)
{
JS::CallArgs args = JS::CallArgsFromVp(argc, vp);
bool ok = true;
JS::RootedObject obj(cx, args.thisv().toObjectOrNull());
js_proxy_t *proxy = jsb_get_js_proxy(obj);
SwimAlg* cobj = (SwimAlg *)(proxy ? proxy->ptr : NULL);
JSB_PRECONDITION2( cobj, cx, false, "js_SwimAlg_SwimAlg_test3 : Invalid Native Object");
//如果参数有2个
if (argc == 2) {
int arg0;
double arg1;
ok &= jsval_to_int32(cx, args.get(0), (int32_t *)&arg0);
//js数字类型转c++浮点型
ok &= JS::ToNumber( cx, args.get(1), &arg1) && !isnan(arg1);
JSB_PRECONDITION2(ok, cx, false, "js_SwimAlg_SwimAlg_test3 : Error processing arguments");
cobj->test3(arg0, arg1);
args.rval().setUndefined();
return true;
}
JS_ReportError(cx, "js_SwimAlg_SwimAlg_test3 : wrong number of arguments: %d, was expecting %d", argc, 2);
return false;
}
测试4
void SwimAlg::test4(double d, Vec2 v){
}
bool js_SwimAlg_SwimAlg_test4(JSContext *cx, uint32_t argc, jsval *vp)
{
JS::CallArgs args = JS::CallArgsFromVp(argc, vp);
bool ok = true;
JS::RootedObject obj(cx, args.thisv().toObjectOrNull());
js_proxy_t *proxy = jsb_get_js_proxy(obj);
SwimAlg* cobj = (SwimAlg *)(proxy ? proxy->ptr : NULL);
JSB_PRECONDITION2( cobj, cx, false, "js_SwimAlg_SwimAlg_test4 : Invalid Native Object");
if (argc == 2) {
double arg0;
cocos2d::Vec2 arg1;
ok &= JS::ToNumber( cx, args.get(0), &arg0) && !isnan(arg0);
//js cc.p()类型转 c++ Vec2() 类型
ok &= jsval_to_vector2(cx, args.get(1), &arg1);
JSB_PRECONDITION2(ok, cx, false, "js_SwimAlg_SwimAlg_test4 : Error processing arguments");
cobj->test4(arg0, arg1);
args.rval().setUndefined();
return true;
}
JS_ReportError(cx, "js_SwimAlg_SwimAlg_test4 : wrong number of arguments: %d, was expecting %d", argc, 2);
return false;
}
bool jsval_to_vector2(JSContext *cx, JS::HandleValue vp/*传入js类型的值， 该值可能是一个js对象或者是一个js变量*/, cocos2d::Vec2* ret/*传出*/)
{
//创建js对象
JS::RootedObject tmp(cx);
//创建js变量
JS::RootedValue jsx(cx);
JS::RootedValue jsy(cx);
double x, y;
bool ok = vp.isObject() &&//vp是否可转为对象
JS_ValueToObject(cx, vp, &tmp) &&//vp转为对象
JS_GetProperty(cx, tmp, "x", &jsx) &&//获取json属性 中的js变量值
JS_GetProperty(cx, tmp, "y", &jsy) &&
JS::ToNumber(cx, jsx, &x) &&//js变量转C++浮点
JS::ToNumber(cx, jsy, &y);
JSB_PRECONDITION3(ok, cx, false, "Error processing arguments");
ret->x = (float)x;//赋值
ret->y = (float)y;
return true;
}
测试5
int SwimAlg::test5(){
return 0;
}
bool js_SwimAlg_SwimAlg_test5(JSContext *cx, uint32_t argc, jsval *vp)
{
JS::CallArgs args = JS::CallArgsFromVp(argc, vp);
JS::RootedObject obj(cx, args.thisv().toObjectOrNull());
js_proxy_t *proxy = jsb_get_js_proxy(obj);
SwimAlg* cobj = (SwimAlg *)(proxy ? proxy->ptr : NULL);
JSB_PRECONDITION2( cobj, cx, false, "js_SwimAlg_SwimAlg_test5 : Invalid Native Object");
if (argc == 0) {
//得到返回值
int ret = cobj->test5();
//c++整型转js数值
jsval jsret = JSVAL_NULL;
jsret = int32_to_jsval(cx, ret);
//设置返回值
args.rval().set(jsret);
return true;
}
JS_ReportError(cx, "js_SwimAlg_SwimAlg_test5 : wrong number of arguments: %d, was expecting %d", argc, 0);
return false;
}
测试6
Vec2 SwimAlg::test6(){
return Vec2::ZERO;
}
bool js_SwimAlg_SwimAlg_test6(JSContext *cx, uint32_t argc, jsval *vp)
{
JS::CallArgs args = JS::CallArgsFromVp(argc, vp);
JS::RootedObject obj(cx, args.thisv().toObjectOrNull());
js_proxy_t *proxy = jsb_get_js_proxy(obj);
SwimAlg* cobj = (SwimAlg *)(proxy ? proxy->ptr : NULL);
JSB_PRECONDITION2( cobj, cx, false, "js_SwimAlg_SwimAlg_test6 : Invalid Native Object");
if (argc == 0) {
cocos2d::Vec2 ret = cobj->test6();
jsval jsret = JSVAL_NULL;
//Vec2转cc.p();
jsret = vector2_to_jsval(cx, ret);
//设置返回值
args.rval().set(jsret);
return true;
}
JS_ReportError(cx, "js_SwimAlg_SwimAlg_test6 : wrong number of arguments: %d, was expecting %d", argc, 0);
return false;
}
jsval vector2_to_jsval(JSContext *cx, const cocos2d::Vec2& v)
{
//创建一个js对象
JS::RootedObject proto(cx);
JS::RootedObject parent(cx);
JS::RootedObject tmp(cx, JS_NewObject(cx, NULL, proto, parent));
if (!tmp) return JSVAL_NULL;
//定义对象的属性x和y
bool ok = JS_DefineProperty(cx, tmp, "x", v.x, JSPROP_ENUMERATE | JSPROP_PERMANENT) &&
JS_DefineProperty(cx, tmp, "y", v.y, JSPROP_ENUMERATE | JSPROP_PERMANENT);
if (ok) {
//返回一个jsval值
return OBJECT_TO_JSVAL(tmp);
}
return JSVAL_NULL;
}
测试7
void SwimAlg::test7(std::vector<int> v){
}
bool jsval_to_std_vector_int( JSContext *cx, JS::HandleValue vp, std::vector<int>* ret)
{
//创建js 对象
JS::RootedObject jsobj(cx);
//如果能转为对象 则转为对象 计算结果得到的都是RootedValue， RootedObject， JSString， Number 或其他类型的值都保存在RootedValue中
bool ok = vp.isObject() && JS_ValueToObject( cx, vp, &jsobj );
JSB_PRECONDITION3( ok, cx, false, "Error converting value to object");
JSB_PRECONDITION3( jsobj && JS_IsArrayObject( cx, jsobj), cx, false, "Object must be an array");
uint32_t len = 0;
//获取对象的数组长度
JS_GetArrayLength(cx, jsobj, &len);
for (uint32_t i=0; i < len; i++)
{
//创建js类型变量
JS::RootedValue value(cx);
if (JS_GetElement(cx, jsobj, i, &value))
{
if (value.isNumber())
{
double number = 0.0;
//转类型
ok = JS::ToNumber(cx, value, &number);
if (ok)
{
ret->push_back(static_cast<int>(number));
}
}
else
{
JS_ReportError(cx, "not supported type in array");
return false;
}
}
}
return true;
}
测试8
void SwimAlg::test8(std::vector<Vec2> v){
}
bool js_SwimAlg_SwimAlg_test8(JSContext *cx, uint32_t argc, jsval *vp)
{
JS::CallArgs args = JS::CallArgsFromVp(argc, vp);
bool ok = true;
JS::RootedObject obj(cx, args.thisv().toObjectOrNull());
js_proxy_t *proxy = jsb_get_js_proxy(obj);
SwimAlg* cobj = (SwimAlg *)(proxy ? proxy->ptr : NULL);
JSB_PRECONDITION2( cobj, cx, false, "js_SwimAlg_SwimAlg_test8 : Invalid Native Object");
if (argc == 1) {
std::vector<cocos2d::Vec2> arg0;
ok &= jsval_to_std_vector_ccvec2(cx, args.get(0), &arg0);
JSB_PRECONDITION2(ok, cx, false, "js_SwimAlg_SwimAlg_test8 : Error processing arguments");
cobj->test8(arg0);
args.rval().setUndefined();
return true;
}
JS_ReportError(cx, "js_SwimAlg_SwimAlg_test8 : wrong number of arguments: %d, was expecting %d", argc, 1);
return false;
}