[Feature Request]: Add #[view] annotation to object::is_owner function

[mshakeg]

🚀 Feature Request

Add the #[view] annotation to the is_owner function in the aptos_framework::object module to enable off-chain querying of object ownership status.

Motivation

Is your feature request related to a problem? Please describe.

The is_owner function in the object module is a read-only function that checks if a given address is the owner of a specific object. However, it currently lacks the #[view] annotation, which means it cannot be used in view functions or called directly from off-chain applications to check ownership status.

This limitation forces developers to either:

1. Write additional wrapper functions with the #[view] annotation
2. Make unnecessary transactions just to check ownership
3. Implement their own ownership checking logic off-chain

Adding the #[view] annotation would allow for more efficient and direct ownership queries without requiring state modifications or additional gas costs.

Pitch

Describe the solution you'd like
Add the #[view] annotation to the existing is_owner function:

/// Return true if the provided address is the current owner.
#[view]
public fun is_owner<T: key>(object: Object<T>, owner: address): bool acquires ObjectCore {
    owner(object) == owner
}

This change would:

• Enable direct off-chain queries for object ownership
• Reduce unnecessary transaction costs for ownership checks
• Improve developer experience when building applications that need to verify object ownership
• Maintain consistency with other read-only functions in the framework

Describe alternatives you've considered

1. Creating a separate view function specifically for ownership checks
2. Implementing ownership verification through events and indexing
3. Building client-side ownership tracking

However, adding the #[view] annotation to the existing function is the most straightforward and maintainable solution, as it:

• Requires minimal code changes
• Maintains single source of truth for ownership checks
• Doesn't introduce additional complexity or maintenance burden

Are you willing to open a pull request?

Yes, I can open a pull request for this change if the feature request is approved.

Additional context

This change aligns with Aptos' goal of improving developer experience and reducing unnecessary transaction costs. Similar read-only functions in other modules (like account::exists_at) already use the #[view] annotation, making this change consistent with existing patterns in the framework.