85 class Maybe;  variable
1475   V8_WARN_UNUSED_RESULT Maybe<int> GetLineNumber(Local<Context> context) const;
1494   V8_WARN_UNUSED_RESULT Maybe<int> GetStartColumn(Local<Context> context) const;
1501   V8_WARN_UNUSED_RESULT Maybe<int> GetEndColumn(Local<Context> context) const;
2018   V8_WARN_UNUSED_RESULT Maybe<bool> BooleanValue(Local<Context> context) const;
2019   V8_WARN_UNUSED_RESULT Maybe<double> NumberValue(Local<Context> context) const;
2020   V8_WARN_UNUSED_RESULT Maybe<int64_t> IntegerValue(
2022   V8_WARN_UNUSED_RESULT Maybe<uint32_t> Uint32Value(
2024   V8_WARN_UNUSED_RESULT Maybe<int32_t> Int32Value(Local<Context> context) const;
2034   V8_WARN_UNUSED_RESULT Maybe<bool> Equals(Local<Context> context,
2638   V8_WARN_UNUSED_RESULT Maybe<bool> Set(Local<Context> context,
2643   V8_WARN_UNUSED_RESULT Maybe<bool> Set(Local<Context> context, uint32_t index,
2653   V8_WARN_UNUSED_RESULT Maybe<bool> CreateDataProperty(Local<Context> context,
2656   V8_WARN_UNUSED_RESULT Maybe<bool> CreateDataProperty(Local<Context> context,
2666   V8_WARN_UNUSED_RESULT Maybe<bool> DefineOwnProperty(
2682                 Maybe<bool> ForceSet(Local<Context> context, Local<Value> key,
2701   V8_WARN_UNUSED_RESULT Maybe<PropertyAttribute> GetPropertyAttributes(
2713   V8_WARN_UNUSED_RESULT Maybe<bool> Has(Local<Context> context,
2718   Maybe<bool> Delete(Local<Context> context, Local<Value> key);
2721   V8_WARN_UNUSED_RESULT Maybe<bool> Has(Local<Context> context, uint32_t index);
2725   Maybe<bool> Delete(Local<Context> context, uint32_t index);
2742   Maybe<bool> SetAccessor(Local<Context> context, Local<Name> name,
2760   Maybe<bool> HasPrivate(Local<Context> context, Local<Private> key);
2761   Maybe<bool> SetPrivate(Local<Context> context, Local<Private> key,
2763   Maybe<bool> DeletePrivate(Local<Context> context, Local<Private> key);
2798   V8_WARN_UNUSED_RESULT Maybe<bool> SetPrototype(Local<Context> context,
2858   V8_WARN_UNUSED_RESULT Maybe<bool> HasOwnProperty(Local<Context> context,
2862   V8_WARN_UNUSED_RESULT Maybe<bool> HasRealNamedProperty(Local<Context> context,
2866   V8_WARN_UNUSED_RESULT Maybe<bool> HasRealIndexedProperty(
2870   V8_WARN_UNUSED_RESULT Maybe<bool> HasRealNamedCallbackProperty(
2890       Maybe<PropertyAttribute> GetRealNamedPropertyAttributesInPrototypeChain(
2892   V8_WARN_UNUSED_RESULT Maybe<PropertyAttribute>
2912                 Maybe<PropertyAttribute> GetRealNamedPropertyAttributes(
2914   V8_WARN_UNUSED_RESULT Maybe<PropertyAttribute> GetRealNamedPropertyAttributes(
3039   V8_WARN_UNUSED_RESULT Maybe<bool> Has(Local<Context> context,
3041   V8_WARN_UNUSED_RESULT Maybe<bool> Delete(Local<Context> context,
3072   V8_WARN_UNUSED_RESULT Maybe<bool> Has(Local<Context> context,
3074   V8_WARN_UNUSED_RESULT Maybe<bool> Delete(Local<Context> context,
3339     Maybe<bool> Resolve(Local<Context> context, Local<Value> value);
3343     Maybe<bool> Reject(Local<Context> context, Local<Value> value);
6446   friend class Maybe;  variable
6467 class Maybe {
6482   V8_INLINE bool operator==(const Maybe& other) const {
6487   V8_INLINE bool operator!=(const Maybe& other) const {
6492   Maybe() : has_value(false) {}  in Maybe()  function
6493   explicit Maybe(const T& t) : has_value(true), value(t) {}  in Maybe()  function
6499   friend Maybe<U> Nothing();
6501   friend Maybe<U> Just(const U& u);
6506 inline Maybe<T> Nothing() {  in Nothing()
6507   return Maybe<T>();  in Nothing()
6512 inline Maybe<T> Just(const T& t) {  in Just()
6513   return Maybe<T>(t);  in Just()