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Wrapper.cpp
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#include "Wrapper.h"
#include <stdlib.h>
#include <vector>
#include <boost/preprocessor.hpp>
#include <boost/python/raw_function.hpp>
#include <descrobject.h>
#include <datetime.h>
#include "V8Internal.h"
#include "Context.h"
#include "Utils.h"
#include <unistd.h>
#include <signal.h>
#define TERMINATE_EXECUTION_CHECK(returnValue) \
if(v8::V8::IsExecutionTerminating()) { \
::PyErr_Clear(); \
::PyErr_SetString(PyExc_RuntimeError, "execution is terminating"); \
return returnValue; \
}
#define CHECK_V8_CONTEXT() \
if (!v8i::Isolate::Current()->context()) { \
throw CJavascriptException("Javascript object out of context", PyExc_UnboundLocalError); \
}
std::ostream& operator <<(std::ostream& os, const CJavascriptObject& obj)
{
obj.Dump(os);
return os;
}
void CWrapper::Expose(void)
{
PyDateTime_IMPORT;
py::class_<CJavascriptObject, boost::noncopyable>("JSObject", py::no_init)
.def("__getattr__", &CJavascriptObject::GetAttr)
.def("__setattr__", &CJavascriptObject::SetAttr)
.def("__delattr__", &CJavascriptObject::DelAttr)
.def("__hash__", &CJavascriptObject::GetIdentityHash)
.def("clone", &CJavascriptObject::Clone, "Clone the object.")
#if PY_MAJOR_VERSION < 3
.add_property("__members__", &CJavascriptObject::GetAttrList)
#else
.def("__dir__", &CJavascriptObject::GetAttrList)
#endif
// Emulating dict object
.def("keys", &CJavascriptObject::GetAttrList, "Get a list of an object's attributes.")
.def("__getitem__", &CJavascriptObject::GetAttr)
.def("__setitem__", &CJavascriptObject::SetAttr)
.def("__delitem__", &CJavascriptObject::DelAttr)
.def("__contains__", &CJavascriptObject::Contains)
.def(int_(py::self))
.def(float_(py::self))
.def(str(py::self))
.def("__nonzero__", &CJavascriptObject::operator bool)
.def("__eq__", &CJavascriptObject::Equals)
.def("__ne__", &CJavascriptObject::Unequals)
.def("create", &CJavascriptFunction::CreateWithArgs,
(py::arg("constructor"),
py::arg("arguments") = py::tuple(),
py::arg("propertiesObject") = py::dict()),
"Creates a new object with the specified prototype object and properties.")
.staticmethod("create")
;
py::class_<CJavascriptNull, py::bases<CJavascriptObject>, boost::noncopyable>("JSNull")
.def("__nonzero__", &CJavascriptNull::nonzero)
.def("__str__", &CJavascriptNull::str)
;
py::class_<CJavascriptUndefined, py::bases<CJavascriptObject>, boost::noncopyable>("JSUndefined")
.def("__nonzero__", &CJavascriptUndefined::nonzero)
.def("__str__", &CJavascriptUndefined::str)
;
py::class_<CJavascriptArray, py::bases<CJavascriptObject>, boost::noncopyable>("JSArray", py::no_init)
.def(py::init<py::object>())
.def("__len__", &CJavascriptArray::Length)
.def("__getitem__", &CJavascriptArray::GetItem)
.def("__setitem__", &CJavascriptArray::SetItem)
.def("__delitem__", &CJavascriptArray::DelItem)
.def("__iter__", py::range(&CJavascriptArray::begin, &CJavascriptArray::end))
.def("__contains__", &CJavascriptArray::Contains)
;
py::class_<CJavascriptFunction, py::bases<CJavascriptObject>, boost::noncopyable>("JSFunction", py::no_init)
.def("__call__", py::raw_function(&CJavascriptFunction::CallWithArgs))
.def("apply", &CJavascriptFunction::ApplyJavascript,
(py::arg("self"),
py::arg("args") = py::list(),
py::arg("kwds") = py::dict()),
"Performs a function call using the parameters.")
.def("apply", &CJavascriptFunction::ApplyPython,
(py::arg("self"),
py::arg("args") = py::list(),
py::arg("kwds") = py::dict(),
py::arg("timeout") = py::long_(0)),
"Performs a function call using the parameters.")
.def("invoke", &CJavascriptFunction::Invoke,
(py::arg("args") = py::list(),
py::arg("kwds") = py::dict(),
py::arg("timeout") = py::long_(0)),
"Performs a binding method call using the parameters.")
.def("setName", &CJavascriptFunction::SetName)
.add_property("name", &CJavascriptFunction::GetName, &CJavascriptFunction::SetName, "The name of function")
.add_property("owner", &CJavascriptFunction::GetOwner)
.add_property("linenum", &CJavascriptFunction::GetLineNumber, "The line number of function in the script")
.add_property("colnum", &CJavascriptFunction::GetColumnNumber, "The column number of function in the script")
.add_property("resname", &CJavascriptFunction::GetResourceName, "The resource name of script")
.add_property("inferredname", &CJavascriptFunction::GetInferredName, "Name inferred from variable or property assignment of this function")
.add_property("lineoff", &CJavascriptFunction::GetLineOffset, "The line offset of function in the script")
.add_property("coloff", &CJavascriptFunction::GetColumnOffset, "The column offset of function in the script")
;
py::objects::class_value_wrapper<boost::shared_ptr<CJavascriptObject>,
py::objects::make_ptr_instance<CJavascriptObject,
py::objects::pointer_holder<boost::shared_ptr<CJavascriptObject>,CJavascriptObject> > >();
}
void CPythonObject::ThrowIf(v8::Isolate* isolate)
{
CPythonGIL python_gil;
assert(PyErr_OCCURRED());
v8::HandleScope handle_scope(isolate);
PyObject *exc, *val, *trb;
::PyErr_Fetch(&exc, &val, &trb);
::PyErr_NormalizeException(&exc, &val, &trb);
py::object type(py::handle<>(py::allow_null(exc))),
value(py::handle<>(py::allow_null(val)));
if (trb) py::decref(trb);
std::string msg;
if (::PyObject_HasAttrString(value.ptr(), "args"))
{
py::object args = value.attr("args");
if (PyTuple_Check(args.ptr()))
{
for (Py_ssize_t i=0; i<PyTuple_GET_SIZE(args.ptr()); i++)
{
py::extract<const std::string> extractor(args[i]);
if (extractor.check()) msg += extractor();
}
}
}
else if (::PyObject_HasAttrString(value.ptr(), "message"))
{
py::extract<const std::string> extractor(value.attr("message"));
if (extractor.check()) msg = extractor();
}
else if (val)
{
if (PyBytes_CheckExact(val))
{
msg = PyBytes_AS_STRING(val);
}
else if (PyTuple_CheckExact(val))
{
for (int i=0; i<PyTuple_GET_SIZE(val); i++)
{
PyObject *item = PyTuple_GET_ITEM(val, i);
if (item && PyBytes_CheckExact(item))
{
msg = PyBytes_AS_STRING(item);
break;
}
}
}
}
v8::Handle<v8::Value> error;
if (::PyErr_GivenExceptionMatches(type.ptr(), ::PyExc_IndexError))
{
error = v8::Exception::RangeError(v8::String::NewFromUtf8(isolate, msg.c_str(), v8::String::kNormalString, msg.size()));
}
else if (::PyErr_GivenExceptionMatches(type.ptr(), ::PyExc_AttributeError))
{
error = v8::Exception::ReferenceError(v8::String::NewFromUtf8(isolate, msg.c_str(), v8::String::kNormalString, msg.size()));
}
else if (::PyErr_GivenExceptionMatches(type.ptr(), ::PyExc_SyntaxError))
{
error = v8::Exception::SyntaxError(v8::String::NewFromUtf8(isolate, msg.c_str(), v8::String::kNormalString, msg.size()));
}
else if (::PyErr_GivenExceptionMatches(type.ptr(), ::PyExc_TypeError))
{
error = v8::Exception::TypeError(v8::String::NewFromUtf8(isolate, msg.c_str(), v8::String::kNormalString, msg.size()));
}
else
{
error = v8::Exception::Error(v8::String::NewFromUtf8(isolate, msg.c_str(), v8::String::kNormalString, msg.size()));
}
if (error->IsObject())
{
// FIXME How to trace the lifecycle of exception? and when to delete those object in the hidden value?
#ifdef SUPPORT_TRACE_EXCEPTION_LIFECYCLE
error->ToObject()->SetHiddenValue(v8::String::NewFromUtf8(isolate, "exc_type"),
v8::External::New(isolate, ObjectTracer::Trace(error, new py::object(type)).Object()));
error->ToObject()->SetHiddenValue(v8::String::NewFromUtf8(isolate, "exc_value"),
v8::External::New(isolate, ObjectTracer::Trace(error, new py::object(value)).Object()));
#else
error->ToObject()->SetHiddenValue(v8::String::NewFromUtf8(isolate, "exc_type"),
v8::External::New(isolate, new py::object(type)));
error->ToObject()->SetHiddenValue(v8::String::NewFromUtf8(isolate, "exc_value"),
v8::External::New(isolate, new py::object(value)));
#endif
}
isolate->ThrowException(error);
}
#define _TERMINATE_CALLBACK_EXECUTION_CHECK(returnValue) \
if(v8::V8::IsExecutionTerminating()) { \
::PyErr_Clear(); \
::PyErr_SetString(PyExc_RuntimeError, "execution is terminating"); \
info.GetReturnValue().Set(returnValue); \
return; \
}
#define TRY_HANDLE_EXCEPTION(value) _TERMINATE_CALLBACK_EXECUTION_CHECK(value) \
BEGIN_HANDLE_PYTHON_EXCEPTION \
{
#define END_HANDLE_EXCEPTION(value) } \
END_HANDLE_PYTHON_EXCEPTION \
info.GetReturnValue().Set(value);
#define CALLBACK_RETURN(value) do { info.GetReturnValue().Set(value); return; } while(0);
void CPythonObject::NamedGetter(v8::Local<v8::String> prop, const v8::PropertyCallbackInfo<v8::Value>& info)
{
v8::HandleScope handle_scope(info.GetIsolate());
TRY_HANDLE_EXCEPTION(v8::Undefined(info.GetIsolate()))
CPythonGIL python_gil;
py::object obj = CJavascriptObject::Wrap(info.Holder());
v8::String::Utf8Value name(prop);
if (PyGen_Check(obj.ptr())) CALLBACK_RETURN(v8::Undefined(info.GetIsolate()));
PyObject *value = ::PyObject_GetAttrString(obj.ptr(), *name);
if (!value)
{
if (PyErr_OCCURRED())
{
if (::PyErr_ExceptionMatches(::PyExc_AttributeError))
{
::PyErr_Clear();
}
else
{
py::throw_error_already_set();
}
}
if (::PyMapping_Check(obj.ptr()) &&
::PyMapping_HasKeyString(obj.ptr(), *name))
{
py::object result(py::handle<>(::PyMapping_GetItemString(obj.ptr(), *name)));
if (!result.is_none()) CALLBACK_RETURN(Wrap(result));
}
CALLBACK_RETURN(v8::Handle<v8::Value>());
}
py::object attr = py::object(py::handle<>(value));
#ifdef SUPPORT_PROPERTY
if (PyObject_TypeCheck(attr.ptr(), &::PyProperty_Type))
{
py::object getter = attr.attr("fget");
if (getter.is_none())
throw CJavascriptException("unreadable attribute", ::PyExc_AttributeError);
attr = getter();
}
#endif
CALLBACK_RETURN(Wrap(attr));
END_HANDLE_EXCEPTION(v8::Undefined(info.GetIsolate()))
}
void CPythonObject::NamedSetter(v8::Local<v8::String> prop, v8::Local<v8::Value> value, const v8::PropertyCallbackInfo<v8::Value>& info)
{
v8::HandleScope handle_scope(info.GetIsolate());
TRY_HANDLE_EXCEPTION(v8::Undefined(info.GetIsolate()))
CPythonGIL python_gil;
py::object obj = CJavascriptObject::Wrap(info.Holder());
v8::String::Utf8Value name(prop);
py::object newval = CJavascriptObject::Wrap(value);
bool found = 1 == ::PyObject_HasAttrString(obj.ptr(), *name);
if (::PyObject_HasAttrString(obj.ptr(), "__watchpoints__"))
{
py::dict watchpoints(obj.attr("__watchpoints__"));
py::str propname(*name, name.length());
if (watchpoints.has_key(propname))
{
py::object watchhandler = watchpoints.get(propname);
newval = watchhandler(propname, found ? obj.attr(propname) : py::object(), newval);
}
}
if (!found && ::PyMapping_Check(obj.ptr()))
{
::PyMapping_SetItemString(obj.ptr(), *name, newval.ptr());
}
else
{
#ifdef SUPPORT_PROPERTY
if (found)
{
py::object attr = obj.attr(*name);
if (PyObject_TypeCheck(attr.ptr(), &::PyProperty_Type))
{
py::object setter = attr.attr("fset");
if (setter.is_none())
throw CJavascriptException("can't set attribute", ::PyExc_AttributeError);
setter(newval);
CALLBACK_RETURN(value);
}
}
#endif
obj.attr(*name) = newval;
}
CALLBACK_RETURN(value);
END_HANDLE_EXCEPTION(v8::Undefined(info.GetIsolate()));
}
void CPythonObject::NamedQuery(v8::Local<v8::String> prop, const v8::PropertyCallbackInfo<v8::Integer>& info)
{
v8::HandleScope handle_scope(info.GetIsolate());
TRY_HANDLE_EXCEPTION(v8::Handle<v8::Integer>())
CPythonGIL python_gil;
py::object obj = CJavascriptObject::Wrap(info.Holder());
v8::String::Utf8Value name(prop);
bool exists = PyGen_Check(obj.ptr()) || ::PyObject_HasAttrString(obj.ptr(), *name) ||
(::PyMapping_Check(obj.ptr()) && ::PyMapping_HasKeyString(obj.ptr(), *name));
if (exists) CALLBACK_RETURN(v8::Integer::New(info.GetIsolate(), v8::None));
END_HANDLE_EXCEPTION(v8::Handle<v8::Integer>())
}
void CPythonObject::NamedDeleter(v8::Local<v8::String> prop, const v8::PropertyCallbackInfo<v8::Boolean>& info)
{
v8::HandleScope handle_scope(info.GetIsolate());
TRY_HANDLE_EXCEPTION(v8::Handle<v8::Boolean>())
CPythonGIL python_gil;
py::object obj = CJavascriptObject::Wrap(info.Holder());
v8::String::Utf8Value name(prop);
if (!::PyObject_HasAttrString(obj.ptr(), *name) &&
::PyMapping_Check(obj.ptr()) &&
::PyMapping_HasKeyString(obj.ptr(), *name))
{
CALLBACK_RETURN(-1 != ::PyMapping_DelItemString(obj.ptr(), *name));
}
else
{
#ifdef SUPPORT_PROPERTY
py::object attr = obj.attr(*name);
if (::PyObject_HasAttrString(obj.ptr(), *name) &&
PyObject_TypeCheck(attr.ptr(), &::PyProperty_Type))
{
py::object deleter = attr.attr("fdel");
if (deleter.is_none())
throw CJavascriptException("can't delete attribute", ::PyExc_AttributeError);
CALLBACK_RETURN(py::extract<bool>(deleter()));
}
else
{
CALLBACK_RETURN(-1 != ::PyObject_DelAttrString(obj.ptr(), *name));
}
#else
CALLBACK_RETURN(-1 != ::PyObject_DelAttrString(obj.ptr(), *name));
#endif
}
END_HANDLE_EXCEPTION(v8::Handle<v8::Boolean>())
}
#pragma GCC diagnostic ignored "-Wdeprecated-writable-strings"
void CPythonObject::NamedEnumerator(const v8::PropertyCallbackInfo<v8::Array>& info)
{
v8::HandleScope handle_scope(info.GetIsolate());
TRY_HANDLE_EXCEPTION(v8::Handle<v8::Array>())
CPythonGIL python_gil;
py::object obj = CJavascriptObject::Wrap(info.Holder());
py::list keys;
bool filter_name = false;
if (::PySequence_Check(obj.ptr()))
{
CALLBACK_RETURN(v8::Handle<v8::Array>());
}
else if (::PyMapping_Check(obj.ptr()))
{
keys = py::list(py::handle<>(PyMapping_Keys(obj.ptr())));
}
else if (PyGen_CheckExact(obj.ptr()))
{
py::object iter(py::handle<>(::PyObject_GetIter(obj.ptr())));
PyObject *item = NULL;
while (NULL != (item = ::PyIter_Next(iter.ptr())))
{
keys.append(py::object(py::handle<>(item)));
}
}
else
{
keys = py::list(py::handle<>(::PyObject_Dir(obj.ptr())));
filter_name = true;
}
Py_ssize_t len = PyList_GET_SIZE(keys.ptr());
v8::Handle<v8::Array> result = v8::Array::New(info.GetIsolate(), len);
if (len > 0)
{
for (Py_ssize_t i=0; i<len; i++)
{
PyObject *item = PyList_GET_ITEM(keys.ptr(), i);
if (filter_name && PyBytes_CheckExact(item))
{
py::str name(py::handle<>(py::borrowed(item)));
// FIXME Are there any methods to avoid such a dirty work?
if (name.startswith("__") && name.endswith("__"))
continue;
}
result->Set(v8::Uint32::New(info.GetIsolate(), i), Wrap(py::object(py::handle<>(py::borrowed(item)))));
}
CALLBACK_RETURN(result);
}
END_HANDLE_EXCEPTION(v8::Handle<v8::Array>())
}
void CPythonObject::IndexedGetter(uint32_t index, const v8::PropertyCallbackInfo<v8::Value>& info)
{
v8::HandleScope handle_scope(info.GetIsolate());
TRY_HANDLE_EXCEPTION(v8::Undefined(info.GetIsolate()));
CPythonGIL python_gil;
py::object obj = CJavascriptObject::Wrap(info.Holder());
if (PyGen_Check(obj.ptr())) CALLBACK_RETURN(v8::Undefined(info.GetIsolate()));
if (::PySequence_Check(obj.ptr()))
{
if ((Py_ssize_t) index < ::PySequence_Size(obj.ptr()))
{
py::object ret(py::handle<>(::PySequence_GetItem(obj.ptr(), index)));
CALLBACK_RETURN(Wrap(ret));
}
}
else if (::PyMapping_Check(obj.ptr()))
{
char buf[65];
snprintf(buf, sizeof(buf), "%d", index);
PyObject *value = ::PyMapping_GetItemString(obj.ptr(), buf);
if (!value)
{
py::long_ key(index);
value = ::PyObject_GetItem(obj.ptr(), key.ptr());
}
if (value)
{
CALLBACK_RETURN(Wrap(py::object(py::handle<>(value))));
}
}
END_HANDLE_EXCEPTION(v8::Undefined(info.GetIsolate()))
}
void CPythonObject::IndexedSetter(uint32_t index, v8::Local<v8::Value> value, const v8::PropertyCallbackInfo<v8::Value>& info)
{
v8::HandleScope handle_scope(info.GetIsolate());
TRY_HANDLE_EXCEPTION(v8::Undefined(info.GetIsolate()));
CPythonGIL python_gil;
py::object obj = CJavascriptObject::Wrap(info.Holder());
if (::PySequence_Check(obj.ptr()))
{
if (::PySequence_SetItem(obj.ptr(), index, CJavascriptObject::Wrap(value).ptr()) < 0)
info.GetIsolate()->ThrowException(v8::Exception::Error(v8::String::NewFromUtf8(info.GetIsolate(), "fail to set indexed value")));
}
else if (::PyMapping_Check(obj.ptr()))
{
char buf[65];
snprintf(buf, sizeof(buf), "%d", index);
if (::PyMapping_SetItemString(obj.ptr(), buf, CJavascriptObject::Wrap(value).ptr()) < 0)
info.GetIsolate()->ThrowException(v8::Exception::Error(v8::String::NewFromUtf8(info.GetIsolate(), "fail to set named value")));
}
CALLBACK_RETURN(value);
END_HANDLE_EXCEPTION(v8::Undefined(info.GetIsolate()))
}
void CPythonObject::IndexedQuery(uint32_t index, const v8::PropertyCallbackInfo<v8::Integer>& info)
{
v8::HandleScope handle_scope(info.GetIsolate());
TRY_HANDLE_EXCEPTION(v8::Handle<v8::Integer>());
CPythonGIL python_gil;
py::object obj = CJavascriptObject::Wrap(info.Holder());
if (PyGen_Check(obj.ptr())) CALLBACK_RETURN(v8::Integer::New(info.GetIsolate(), v8::ReadOnly));
if (::PySequence_Check(obj.ptr()))
{
if ((Py_ssize_t) index < ::PySequence_Size(obj.ptr()))
{
CALLBACK_RETURN(v8::Integer::New(info.GetIsolate(), v8::None));
}
}
else if (::PyMapping_Check(obj.ptr()))
{
char buf[65];
snprintf(buf, sizeof(buf), "%d", index);
if (::PyMapping_HasKeyString(obj.ptr(), buf) ||
::PyMapping_HasKey(obj.ptr(), py::long_(index).ptr()))
{
CALLBACK_RETURN(v8::Integer::New(info.GetIsolate(), v8::None));
}
}
END_HANDLE_EXCEPTION(v8::Handle<v8::Integer>())
}
void CPythonObject::IndexedDeleter(uint32_t index, const v8::PropertyCallbackInfo<v8::Boolean>& info)
{
v8::HandleScope handle_scope(info.GetIsolate());
TRY_HANDLE_EXCEPTION(v8::Handle<v8::Boolean>());
CPythonGIL python_gil;
py::object obj = CJavascriptObject::Wrap(info.Holder());
if (::PySequence_Check(obj.ptr()) && (Py_ssize_t) index < ::PySequence_Size(obj.ptr()))
{
CALLBACK_RETURN(0 <= ::PySequence_DelItem(obj.ptr(), index));
}
else if (::PyMapping_Check(obj.ptr()))
{
char buf[65];
snprintf(buf, sizeof(buf), "%d", index);
CALLBACK_RETURN(PyMapping_DelItemString(obj.ptr(), buf) == 0);
}
END_HANDLE_EXCEPTION(v8::Handle<v8::Boolean>())
}
void CPythonObject::IndexedEnumerator(const v8::PropertyCallbackInfo<v8::Array>& info)
{
v8::HandleScope handle_scope(info.GetIsolate());
TRY_HANDLE_EXCEPTION(v8::Handle<v8::Array>());
CPythonGIL python_gil;
py::object obj = CJavascriptObject::Wrap(info.Holder());
Py_ssize_t len = ::PySequence_Check(obj.ptr()) ? ::PySequence_Size(obj.ptr()) : 0;
v8::Handle<v8::Array> result = v8::Array::New(info.GetIsolate(), len);
for (Py_ssize_t i=0; i<len; i++)
{
result->Set(v8::Uint32::New(info.GetIsolate(), i), v8::Int32::New(info.GetIsolate(), i)->ToString());
}
CALLBACK_RETURN(result);
END_HANDLE_EXCEPTION(v8::Handle<v8::Array>())
}
#define GEN_ARG(z, n, data) CJavascriptObject::Wrap(info[n])
#define GEN_ARGS(count) BOOST_PP_ENUM(count, GEN_ARG, NULL)
#define GEN_CASE_PRED(r, state) \
BOOST_PP_NOT_EQUAL( \
BOOST_PP_TUPLE_ELEM(2, 0, state), \
BOOST_PP_INC(BOOST_PP_TUPLE_ELEM(2, 1, state)) \
) \
/**/
#define GEN_CASE_OP(r, state) \
( \
BOOST_PP_INC(BOOST_PP_TUPLE_ELEM(2, 0, state)), \
BOOST_PP_TUPLE_ELEM(2, 1, state) \
) \
/**/
#define GEN_CASE_MACRO(r, state) \
case BOOST_PP_TUPLE_ELEM(2, 0, state): { \
result = self(GEN_ARGS(BOOST_PP_TUPLE_ELEM(2, 0, state))); \
break; \
} \
/**/
void CPythonObject::Caller(const v8::FunctionCallbackInfo<v8::Value>& info)
{
v8::HandleScope handle_scope(info.GetIsolate());
TRY_HANDLE_EXCEPTION(v8::Undefined(info.GetIsolate()));
CPythonGIL python_gil;
py::object self;
if (!info.Data().IsEmpty() && info.Data()->IsExternal())
{
v8::Handle<v8::External> field = v8::Handle<v8::External>::Cast(info.Data());
self = *static_cast<py::object *>(field->Value());
}
else
{
self = CJavascriptObject::Wrap(info.This());
}
py::object result;
switch (info.Length())
{
BOOST_PP_FOR((0, 10), GEN_CASE_PRED, GEN_CASE_OP, GEN_CASE_MACRO)
default:
info.GetIsolate()->ThrowException(v8::Exception::Error(v8::String::NewFromUtf8(info.GetIsolate(), "too many arguments")));
CALLBACK_RETURN(v8::Undefined(info.GetIsolate()));
}
CALLBACK_RETURN(Wrap(result));
END_HANDLE_EXCEPTION(v8::Undefined(info.GetIsolate()))
}
void CPythonObject::SetupObjectTemplate(v8::Isolate *isolate, v8::Handle<v8::ObjectTemplate> clazz)
{
v8::HandleScope handle_scope(isolate);
clazz->SetInternalFieldCount(1);
clazz->SetNamedPropertyHandler(NamedGetter, NamedSetter, NamedQuery, NamedDeleter, NamedEnumerator);
clazz->SetIndexedPropertyHandler(IndexedGetter, IndexedSetter, IndexedQuery, IndexedDeleter, IndexedEnumerator);
clazz->SetCallAsFunctionHandler(Caller);
}
v8::Handle<v8::ObjectTemplate> CPythonObject::CreateObjectTemplate(v8::Isolate *isolate)
{
v8::EscapableHandleScope handle_scope(isolate);
v8::Local<v8::ObjectTemplate> clazz = v8::ObjectTemplate::New();
SetupObjectTemplate(isolate, clazz);
return handle_scope.Escape(clazz);
}
bool CPythonObject::IsWrapped(v8::Handle<v8::Object> obj)
{
return obj->InternalFieldCount() == 1;
}
py::object CPythonObject::Unwrap(v8::Handle<v8::Object> obj)
{
v8::HandleScope handle_scope(v8::Isolate::GetCurrent());
v8::Handle<v8::External> payload = v8::Handle<v8::External>::Cast(obj->GetInternalField(0));
return *static_cast<py::object *>(payload->Value());
}
void CPythonObject::Dispose(v8::Handle<v8::Value> value)
{
v8::HandleScope handle_scope(v8::Isolate::GetCurrent());
if (value->IsObject())
{
v8::Handle<v8::Object> obj = value->ToObject();
if (IsWrapped(obj))
{
Py_DECREF(CPythonObject::Unwrap(obj).ptr());
}
}
}
v8::Handle<v8::Value> CPythonObject::Wrap(py::object obj)
{
v8::EscapableHandleScope handle_scope(v8::Isolate::GetCurrent());
v8::Local<v8::Value> value;
#ifdef SUPPORT_TRACE_LIFECYCLE
value = ObjectTracer::FindCache(obj);
if (value.IsEmpty())
#endif
value = WrapInternal(obj);
return handle_scope.Escape(value);
}
v8::Handle<v8::Value> CPythonObject::WrapInternal(py::object obj)
{
assert(v8::Isolate::GetCurrent()->InContext());
v8::EscapableHandleScope handle_scope(v8::Isolate::GetCurrent());
v8::TryCatch try_catch;
CPythonGIL python_gil;
TERMINATE_EXECUTION_CHECK(v8::Undefined(v8::Isolate::GetCurrent()))
if (obj.is_none()) return v8::Null(v8::Isolate::GetCurrent());
if (obj.ptr() == Py_True) return v8::True(v8::Isolate::GetCurrent());
if (obj.ptr() == Py_False) return v8::False(v8::Isolate::GetCurrent());
py::extract<CJavascriptObject&> extractor(obj);
if (extractor.check())
{
CJavascriptObject& jsobj = extractor();
if (dynamic_cast<CJavascriptNull *>(&jsobj)) return v8::Null(v8::Isolate::GetCurrent());
if (dynamic_cast<CJavascriptUndefined *>(&jsobj)) return v8::Undefined(v8::Isolate::GetCurrent());
if (jsobj.Object().IsEmpty())
{
ILazyObject *pLazyObject = dynamic_cast<ILazyObject *>(&jsobj);
if (pLazyObject) pLazyObject->LazyConstructor();
}
if (jsobj.Object().IsEmpty())
{
throw CJavascriptException("Refer to a null object", ::PyExc_AttributeError);
}
#ifdef SUPPORT_TRACE_LIFECYCLE
py::object *object = new py::object(obj);
ObjectTracer::Trace(jsobj.Object(), object);
#endif
return handle_scope.Escape(jsobj.Object());
}
v8::Local<v8::Value> result;
#if PY_MAJOR_VERSION < 3
if (PyInt_CheckExact(obj.ptr()))
{
result = v8::Integer::New(v8::Isolate::GetCurrent(), ::PyInt_AsLong(obj.ptr()));
}
else
#endif
if (PyLong_CheckExact(obj.ptr()))
{
result = v8::Integer::New(v8::Isolate::GetCurrent(), ::PyLong_AsLong(obj.ptr()));
}
else if (PyBool_Check(obj.ptr()))
{
result = v8::Boolean::New(v8::Isolate::GetCurrent(), py::extract<bool>(obj));
}
else if (PyBytes_CheckExact(obj.ptr()) ||
PyUnicode_CheckExact(obj.ptr()))
{
result = ToString(obj);
}
else if (PyFloat_CheckExact(obj.ptr()))
{
result = v8::Number::New(v8::Isolate::GetCurrent(), py::extract<double>(obj));
}
else if (PyDateTime_CheckExact(obj.ptr()) || PyDate_CheckExact(obj.ptr()))
{
tm ts = { 0 };
ts.tm_year = PyDateTime_GET_YEAR(obj.ptr()) - 1900;
ts.tm_mon = PyDateTime_GET_MONTH(obj.ptr()) - 1;
ts.tm_mday = PyDateTime_GET_DAY(obj.ptr());
ts.tm_hour = PyDateTime_DATE_GET_HOUR(obj.ptr());
ts.tm_min = PyDateTime_DATE_GET_MINUTE(obj.ptr());
ts.tm_sec = PyDateTime_DATE_GET_SECOND(obj.ptr());
ts.tm_isdst = -1;
int ms = PyDateTime_DATE_GET_MICROSECOND(obj.ptr());
result = v8::Date::New(v8::Isolate::GetCurrent(), ((double) mktime(&ts)) * 1000 + ms / 1000);
}
else if (PyTime_CheckExact(obj.ptr()))
{
tm ts = { 0 };
ts.tm_hour = PyDateTime_TIME_GET_HOUR(obj.ptr()) - 1;
ts.tm_min = PyDateTime_TIME_GET_MINUTE(obj.ptr());
ts.tm_sec = PyDateTime_TIME_GET_SECOND(obj.ptr());
int ms = PyDateTime_TIME_GET_MICROSECOND(obj.ptr());
result = v8::Date::New(v8::Isolate::GetCurrent(), ((double) mktime(&ts)) * 1000 + ms / 1000);
}
else if (PyCFunction_Check(obj.ptr()) || PyFunction_Check(obj.ptr()) ||
PyMethod_Check(obj.ptr()) || PyType_Check(obj.ptr()))
{
v8::Handle<v8::FunctionTemplate> func_tmpl = v8::FunctionTemplate::New(v8::Isolate::GetCurrent());
py::object *object = new py::object(obj);
func_tmpl->SetCallHandler(Caller, v8::External::New(v8::Isolate::GetCurrent(), object));
if (PyType_Check(obj.ptr()))
{
v8::Handle<v8::String> cls_name = v8::String::NewFromUtf8(v8::Isolate::GetCurrent(), py::extract<const char *>(obj.attr("__name__"))());
func_tmpl->SetClassName(cls_name);
}
result = func_tmpl->GetFunction();
#ifdef SUPPORT_TRACE_LIFECYCLE
if (!result.IsEmpty()) ObjectTracer::Trace(result, object);
#endif
}
else
{
static v8::Persistent<v8::ObjectTemplate> s_template(v8::Isolate::GetCurrent(), CreateObjectTemplate(v8::Isolate::GetCurrent()));
v8::Handle<v8::Object> instance = v8::Local<v8::ObjectTemplate>::New(v8::Isolate::GetCurrent(), s_template)->NewInstance();
if (!instance.IsEmpty())
{
py::object *object = new py::object(obj);
instance->SetInternalField(0, v8::External::New(v8::Isolate::GetCurrent(), object));
#ifdef SUPPORT_TRACE_LIFECYCLE
ObjectTracer::Trace(instance, object);
#endif
}
result = instance;
}
if (result.IsEmpty()) CJavascriptException::ThrowIf(v8::Isolate::GetCurrent(), try_catch);
return handle_scope.Escape(result);
}
void CJavascriptObject::CheckAttr(v8::Handle<v8::String> name) const
{
assert(v8::Isolate::GetCurrent()->InContext());
v8::HandleScope handle_scope(v8::Isolate::GetCurrent());
if (!Object()->Has(name))
{
std::ostringstream msg;
msg << "'" << *v8::String::Utf8Value(Object()->ObjectProtoToString())
<< "' object has no attribute '" << *v8::String::Utf8Value(name) << "'";
throw CJavascriptException(msg.str(), ::PyExc_AttributeError);
}
}
py::object CJavascriptObject::GetAttr(const std::string& name)
{
#ifdef SUPPORT_PROBES
if (WRAPPER_JS_OBJECT_GETATTR_ENABLED()) {
WRAPPER_JS_OBJECT_GETATTR(&m_obj, name.c_str());
}
#endif
CHECK_V8_CONTEXT();
v8::HandleScope handle_scope(v8::Isolate::GetCurrent());
v8::TryCatch try_catch;
v8::Handle<v8::String> attr_name = DecodeUtf8(name);
CheckAttr(attr_name);
v8::Handle<v8::Value> attr_value = Object()->Get(attr_name);
if (attr_value.IsEmpty())
CJavascriptException::ThrowIf(v8::Isolate::GetCurrent(), try_catch);
return CJavascriptObject::Wrap(attr_value, Object());
}
void CJavascriptObject::SetAttr(const std::string& name, py::object value)
{
#ifdef SUPPORT_PROBES
if (WRAPPER_JS_OBJECT_SETATTR_ENABLED()) {
WRAPPER_JS_OBJECT_SETATTR(&m_obj, name.c_str(), value.ptr());
}
#endif