template<> bool ScriptInterface::FromJSVal<std::wstring>(JSContext* cx, JS::HandleValue v, std::wstring& out)
{
JSAutoRequest rq(cx);
WARN_IF_NOT(v.isString() || v.isNumber(), v); // allow implicit number conversions
JS::RootedString str(cx, JS::ToString(cx, v));
if (!str)
FAIL("Argument must be convertible to a string");
if (JS_StringHasLatin1Chars(str))
{
size_t length;
JS::AutoCheckCannotGC nogc;
const JS::Latin1Char* ch = JS_GetLatin1StringCharsAndLength(cx, nogc, str, &length);
if (!ch)
FAIL("JS_GetLatin1StringCharsAndLength failed");
out.assign(ch, ch + length);
}
else
{
size_t length;
JS::AutoCheckCannotGC nogc;
const char16_t* ch = JS_GetTwoByteStringCharsAndLength(cx, nogc, str, &length);
if (!ch)
FAIL("JS_GetTwoByteStringsCharsAndLength failed"); // out of memory
out.assign(ch, ch + length);
}
return true;
}
template<> bool ScriptInterface::FromJSVal<bool>(JSContext* cx, JS::HandleValue v, bool& out)
{
JSAutoRequest rq(cx);
WARN_IF_NOT(v.isBoolean(), v);
out = JS::ToBoolean(v);
return true;
}
template<> bool ScriptInterface::FromJSVal<u16>(JSContext* cx, JS::HandleValue v, u16& out)
{
JSAutoRequest rq(cx);
WARN_IF_NOT(v.isNumber(), v);
if (!JS::ToUint16(cx, v, &out))
return false;
return true;
}
template<> bool ScriptInterface::FromJSVal<u8>(JSContext* cx, jsval v, u8& out)
{
uint16 ret;
WARN_IF_NOT(JSVAL_IS_NUMBER(v), v);
if (!JS_ValueToUint16(cx, v, &ret))
return false;
out = (u8)ret;
return true;
}
template<> bool ScriptInterface::FromJSVal<u32>(JSContext* cx, jsval v, u32& out)
{
uint32 ret;
WARN_IF_NOT(JSVAL_IS_NUMBER(v), v);
if (!JS_ValueToECMAUint32(cx, v, &ret))
return false;
out = ret;
return true;
}
template<> bool ScriptInterface::FromJSVal<double>(JSContext* cx, jsval v, double& out)
{
jsdouble ret;
WARN_IF_NOT(JSVAL_IS_NUMBER(v), v);
if (!JS_ValueToNumber(cx, v, &ret))
return false;
out = ret;
return true;
}
template<> bool ScriptInterface::FromJSVal<bool>(JSContext* cx, jsval v, bool& out)
{
JSBool ret;
WARN_IF_NOT(JSVAL_IS_BOOLEAN(v), v);
if (!JS_ValueToBoolean(cx, v, &ret))
return false;
out = (ret ? true : false);
return true;
}
template<> bool ScriptInterface::FromJSVal<float>(JSContext* cx, JS::HandleValue v, float& out)
{
JSAutoRequest rq(cx);
double tmp;
WARN_IF_NOT(v.isNumber(), v);
if (!JS::ToNumber(cx, v, &tmp))
return false;
out = tmp;
return true;
}
template<> bool ScriptInterface::FromJSVal<std::string>(JSContext* cx, jsval v, std::string& out)
{
WARN_IF_NOT(JSVAL_IS_STRING(v) || JSVAL_IS_NUMBER(v), v); // allow implicit number conversions
JSString* ret = JS_ValueToString(cx, v);
if (!ret)
FAIL("Argument must be convertible to a string");
char* ch = JS_EncodeString(cx, ret); // chops off high byte of each jschar
if (!ch)
FAIL("JS_EncodeString failed"); // out of memory
out = std::string(ch, ch + JS_GetStringLength(ret));
JS_free(cx, ch);
return true;
}
template<> bool ScriptInterface::FromJSVal<std::wstring>(JSContext* cx, jsval v, std::wstring& out)
{
WARN_IF_NOT(JSVAL_IS_STRING(v) || JSVAL_IS_NUMBER(v), v); // allow implicit number conversions
JSString* ret = JS_ValueToString(cx, v);
if (!ret)
FAIL("Argument must be convertible to a string");
size_t length;
const jschar* ch = JS_GetStringCharsAndLength(cx, ret, &length);
if (!ch)
FAIL("JS_GetStringsCharsAndLength failed"); // out of memory
out = std::wstring(ch, ch + length);
return true;
}
template<> bool ScriptInterface::FromJSVal<std::string>(JSContext* cx, JS::HandleValue v, std::string& out)
{
JSAutoRequest rq(cx);
WARN_IF_NOT(v.isString() || v.isNumber(), v); // allow implicit number conversions
JS::RootedString str(cx, JS::ToString(cx, v));
if (!str)
FAIL("Argument must be convertible to a string");
char* ch = JS_EncodeString(cx, str); // chops off high byte of each char16_t
if (!ch)
FAIL("JS_EncodeString failed"); // out of memory
out.assign(ch, ch + JS_GetStringLength(str));
JS_free(cx, ch);
return true;
}
