update swig on windows
This commit is contained in:
Bassem Girgis
233
winx64/bin/swigwin-4.0.0/Tools/javascript/jsc_shell.cxx
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233
winx64/bin/swigwin-4.0.0/Tools/javascript/jsc_shell.cxx
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#include <JavaScriptCore/JavaScript.h>
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#include "js_shell.h"
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#include <iostream>
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#include <stdio.h>
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#ifdef __GNUC__
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#include <dlfcn.h>
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#define LOAD_SYMBOL(handle, name) dlsym(handle, name)
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#else
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#error "implement dll loading"
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#endif
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class JSCShell: public JSShell {
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typedef int (*JSCIntializer)(JSGlobalContextRef context, JSObjectRef *module);
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public:
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JSCShell() {};
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virtual ~JSCShell();
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protected:
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virtual bool InitializeEngine();
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virtual bool ExecuteScript(const std::string& source, const std::string& scriptPath);
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virtual bool DisposeEngine();
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private:
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JSObjectRef Import(const std::string &moduleName);
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static JSValueRef Print(JSContextRef context, JSObjectRef object, JSObjectRef globalobj, size_t argc, const JSValueRef args[], JSValueRef* ex);
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static JSValueRef Require(JSContextRef context, JSObjectRef object, JSObjectRef globalobj, size_t argc, const JSValueRef args[], JSValueRef* ex);
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static bool RegisterFunction(JSGlobalContextRef context, JSObjectRef object, const char* functionName, JSObjectCallAsFunctionCallback cbFunction);
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static void PrintError(JSContextRef, JSValueRef);
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private:
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JSGlobalContextRef context;
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};
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JSCShell::~JSCShell() {
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if(context != 0) {
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JSGlobalContextRelease(context);
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context = 0;
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}
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}
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bool JSCShell::InitializeEngine() {
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if(context != 0) {
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JSGlobalContextRelease(context);
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context = 0;
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}
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// TODO: check for initialization errors
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context = JSGlobalContextCreate(NULL);
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if(context == 0) return false;
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JSObjectRef globalObject = JSContextGetGlobalObject(context);
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// store this for later use
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JSClassDefinition __shell_classdef__ = JSClassDefinition();
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JSClassRef __shell_class__ = JSClassCreate(&__shell_classdef__);
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JSObjectRef __shell__ = JSObjectMake(context, __shell_class__, 0);
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bool success = JSObjectSetPrivate(__shell__, (void*) (long) this);
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if (!success) {
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std::cerr << "Could not register the shell in the Javascript context" << std::endl;
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return false;
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}
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JSStringRef shellKey = JSStringCreateWithUTF8CString("__shell__");
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JSObjectSetProperty(context, globalObject, shellKey, __shell__, kJSPropertyAttributeReadOnly, NULL);
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JSStringRelease(shellKey);
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JSCShell::RegisterFunction(context, globalObject, "print", JSCShell::Print);
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JSCShell::RegisterFunction(context, globalObject, "require", JSCShell::Require);
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return true;
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}
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bool JSCShell::ExecuteScript(const std::string& source, const std::string& scriptPath) {
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JSStringRef jsScript;
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JSStringRef sourceURL;
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JSValueRef ex;
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jsScript = JSStringCreateWithUTF8CString(source.c_str());
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sourceURL = JSStringCreateWithUTF8CString(scriptPath.c_str());
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JSValueRef jsResult = JSEvaluateScript(context, jsScript, 0, sourceURL, 0, &ex);
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JSStringRelease(jsScript);
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if (jsResult == NULL && ex != NULL) {
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JSCShell::PrintError(context, ex);
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return false;
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}
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return true;
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}
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bool JSCShell::DisposeEngine() {
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JSGlobalContextRelease(context);
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context = 0;
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return true;
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}
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JSValueRef JSCShell::Print(JSContextRef context, JSObjectRef object,
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JSObjectRef globalobj, size_t argc,
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const JSValueRef args[], JSValueRef* ex) {
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if (argc > 0)
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{
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JSStringRef string = JSValueToStringCopy(context, args[0], NULL);
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size_t numChars = JSStringGetMaximumUTF8CStringSize(string);
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char *stringUTF8 = new char[numChars];
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JSStringGetUTF8CString(string, stringUTF8, numChars);
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printf("%s\n", stringUTF8);
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delete[] stringUTF8;
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}
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return JSValueMakeUndefined(context);
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}
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// Attention: this feature should not create too high expectations.
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// It is only capable of loading things relative to the execution directory
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// and not relative to the parent script.
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JSValueRef JSCShell::Require(JSContextRef context, JSObjectRef object,
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JSObjectRef globalObj, size_t argc,
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const JSValueRef args[], JSValueRef* ex) {
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JSObjectRef module;
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JSStringRef shellKey = JSStringCreateWithUTF8CString("__shell__");
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JSValueRef shellAsVal = JSObjectGetProperty(context, globalObj, shellKey, NULL);
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JSStringRelease(shellKey);
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JSObjectRef shell = JSValueToObject(context, shellAsVal, 0);
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JSCShell *_this = (JSCShell*) (long) JSObjectGetPrivate(shell);
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if (argc > 0)
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{
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JSStringRef string = JSValueToStringCopy(context, args[0], NULL);
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size_t numChars = JSStringGetMaximumUTF8CStringSize(string);
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char *stringUTF8 = new char[numChars];
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JSStringGetUTF8CString(string, stringUTF8, numChars);
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std::string modulePath(stringUTF8);
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module = _this->Import(modulePath);
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delete[] stringUTF8;
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}
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if (module) {
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return module;
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} else {
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printf("Ooops.\n");
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return JSValueMakeUndefined(context);
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}
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}
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JSObjectRef JSCShell::Import(const std::string& module_path) {
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HANDLE library;
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std::string module_name = LoadModule(module_path, &library);
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if (library == 0) {
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printf("Could not load module.");
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return 0;
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}
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std::string symname = std::string(module_name).append("_initialize");
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JSCIntializer init_function = reinterpret_cast<JSCIntializer>((long) LOAD_SYMBOL(library, symname.c_str()));
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if(init_function == 0) {
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printf("Could not find module's initializer function.");
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return 0;
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}
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JSObjectRef module;
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init_function(context, &module);
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return module;
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}
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bool JSCShell::RegisterFunction(JSGlobalContextRef context, JSObjectRef object,
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const char* functionName, JSObjectCallAsFunctionCallback callback) {
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JSStringRef js_functionName = JSStringCreateWithUTF8CString(functionName);
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JSObjectSetProperty(context, object, js_functionName,
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JSObjectMakeFunctionWithCallback(context, js_functionName, callback),
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kJSPropertyAttributeNone, NULL);
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JSStringRelease(js_functionName);
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return true;
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}
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void JSCShell::PrintError(JSContextRef ctx, JSValueRef err) {
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char *buffer;
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size_t length;
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JSStringRef string = JSValueToStringCopy(ctx, err, 0);
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length = JSStringGetLength(string);
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buffer = new char[length+1];
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JSStringGetUTF8CString(string, buffer, length+1);
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std::string errMsg(buffer);
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JSStringRelease(string);
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delete[] buffer;
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JSObjectRef errObj = JSValueToObject(ctx, err, 0);
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if(errObj == 0) {
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std::cerr << errMsg << std::endl;
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return;
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}
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JSStringRef sourceURLKey = JSStringCreateWithUTF8CString("sourceURL");
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JSStringRef sourceURLStr = JSValueToStringCopy(ctx, JSObjectGetProperty(ctx, errObj, sourceURLKey, 0), 0);
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length = JSStringGetLength(sourceURLStr);
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buffer = new char[length+1];
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JSStringGetUTF8CString(sourceURLStr, buffer, length+1);
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std::string sourceURL(buffer);
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delete[] buffer;
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JSStringRelease(sourceURLStr);
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JSStringRelease(sourceURLKey);
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JSStringRef lineKey = JSStringCreateWithUTF8CString("line");
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JSValueRef jsLine = JSObjectGetProperty(ctx, errObj, lineKey, 0);
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int line = (int) JSValueToNumber(ctx, jsLine, 0);
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JSStringRelease(lineKey);
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std::cerr << sourceURL << ":" << line << ":" << errMsg << std::endl;
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}
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JSShell* JSCShell_Create() {
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return new JSCShell();
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}
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