bool CoerceDouble(const JS::Value& v, double* d) {
if (v.isDouble()) {
*d = v.toDouble();
} else if (v.isInt32()) {
*d = double(v.toInt32());
} else if (v.isUndefined()) {
*d = 0.0;
} else {
return false;
}
return true;
}
std::string
gjs_debug_value(JS::Value v)
{
std::ostringstream out;
if (v.isNull())
return "null";
if (v.isUndefined())
return "undefined";
if (v.isInt32()) {
out << v.toInt32();
return out.str();
}
if (v.isDouble()) {
out << v.toDouble();
return out.str();
}
if (v.isString()) {
out << gjs_debug_string(v.toString());
return out.str();
}
if (v.isSymbol()) {
out << gjs_debug_symbol(v.toSymbol());
return out.str();
}
if (v.isObject() && js::IsFunctionObject(&v.toObject())) {
JSFunction* fun = JS_GetObjectFunction(&v.toObject());
JSString *display_name = JS_GetFunctionDisplayId(fun);
if (display_name)
out << "<function " << gjs_debug_string(display_name);
else
out << "<unnamed function";
out << " at " << fun << '>';
return out.str();
}
if (v.isObject()) {
out << gjs_debug_object(&v.toObject());
return out.str();
}
if (v.isBoolean())
return (v.toBoolean() ? "true" : "false");
if (v.isMagic())
return "<magic>";
return "unexpected value";
}