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Simplify creation of a Javascript shell.

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This commit is contained in:
Oliver Buchtala 2012-11-17 02:12:12 +01:00
commit 058a27bf32
4 changed files with 53 additions and 70 deletions
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38
Tools/javascript/jsc_shell.cxx
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@ -19,7 +19,7 @@ typedef int (*JSCIntializer)(JSGlobalContextRef context);
public:
JSCShell() {};
virtual ~JSCShell();
protected:
@ -27,14 +27,14 @@ protected:
virtual bool RegisterModule(HANDLE library, const std::string& module_name);
virtual bool InitializeEngine();
virtual bool ExecuteScript(const std::string& source, const std::string& name);
virtual bool DisposeEngine();
private:
static JSValueRef Print(JSContextRef context,JSObjectRef object, JSObjectRef globalobj, size_t argc, const JSValueRef args[], JSValueRef* ex);
static JSValueRef Print(JSContextRef context,JSObjectRef object, JSObjectRef globalobj, size_t argc, const JSValueRef args[], JSValueRef* ex);
static bool RegisterFunction(JSGlobalContextRef context, JSObjectRef object, const char* functionName, JSObjectCallAsFunctionCallback cbFunction);
@ -43,7 +43,7 @@ private:
private:
std::vector<JSCIntializer> module_initializers;
JSGlobalContextRef context;
};
@ -56,7 +56,7 @@ JSCShell::~JSCShell() {
bool JSCShell::RegisterModule(HANDLE library, const std::string& module_name) {
std::string symname = std::string(module_name).append("_initialize");
JSCIntializer init_function = reinterpret_cast<JSCIntializer>((long) LOAD_SYMBOL(library, symname.c_str()));
if(init_function == 0) return false;
@ -64,7 +64,7 @@ bool JSCShell::RegisterModule(HANDLE library, const std::string& module_name) {
return true;
}
bool JSCShell::InitializeEngine() {
bool JSCShell::InitializeEngine() {
if(context != 0) {
JSGlobalContextRelease(context);
context = 0;
@ -81,7 +81,7 @@ bool JSCShell::InitializeEngine() {
if(!init_function(context)) {
return false;
}
}
}
return true;
}
@ -104,9 +104,9 @@ bool JSCShell::DisposeEngine() {
return true;
}
JSValueRef JSCShell::Print(JSContextRef context, JSObjectRef object,
JSObjectRef globalobj, size_t argc,
const JSValueRef args[], JSValueRef* ex) {
JSValueRef JSCShell::Print(JSContextRef context, JSObjectRef object,
JSObjectRef globalobj, size_t argc,
const JSValueRef args[], JSValueRef* ex) {
if (argc > 0)
{
JSStringRef string = JSValueToStringCopy(context, args[0], NULL);
@ -114,18 +114,18 @@ JSValueRef JSCShell::Print(JSContextRef context, JSObjectRef object,
char *stringUTF8 = new char[numChars];
JSStringGetUTF8CString(string, stringUTF8, numChars);
printf("%s\n", stringUTF8);
delete[] stringUTF8;
}
return JSValueMakeUndefined(context);
}
bool JSCShell::RegisterFunction(JSGlobalContextRef context, JSObjectRef object,
bool JSCShell::RegisterFunction(JSGlobalContextRef context, JSObjectRef object,
const char* functionName, JSObjectCallAsFunctionCallback callback) {
JSStringRef js_functionName = JSStringCreateWithUTF8CString(functionName);
JSObjectSetProperty(context, object, js_functionName,
JSObjectMakeFunctionWithCallback(context, js_functionName, callback),
JSObjectMakeFunctionWithCallback(context, js_functionName, callback),
kJSPropertyAttributeNone, NULL);
JSStringRelease(js_functionName);
return true;
@ -133,10 +133,10 @@ bool JSCShell::RegisterFunction(JSGlobalContextRef context, JSObjectRef object,
void JSCShell::PrintError(JSContextRef ctx, JSValueRef err, const std::string& name) {
char *buffer;
JSStringRef string = JSValueToStringCopy(ctx, err, 0);
size_t length = JSStringGetLength(string);
buffer = new char[length+1];
JSStringGetUTF8CString(string, buffer, length+1);
std::string errMsg(buffer);
@ -144,7 +144,7 @@ void JSCShell::PrintError(JSContextRef ctx, JSValueRef err, const std::string& n
delete[] buffer;
JSObjectRef errObj = JSValueToObject(ctx, err, 0);
if(errObj == 0) {
std::cerr << errMsg << std::endl;
return;
@ -154,12 +154,12 @@ void JSCShell::PrintError(JSContextRef ctx, JSValueRef err, const std::string& n
// though, it happened that this was always ""
JSStringRef lineKey = JSStringCreateWithUTF8CString("line");
JSValueRef jsLine = JSObjectGetProperty(ctx, errObj, lineKey, 0);
int line = (int) JSValueToNumber(ctx, jsLine, 0);
int line = (int) JSValueToNumber(ctx, jsLine, 0);
JSStringRelease(lineKey);
std::cerr << name << ":" << line << ":" << errMsg << std::endl;
}
JSShell* create_jsc_shell() {
JSShell* JSShell::Create() {
return new JSCShell();
}