Accessing constants in pure functions

[RenanSouza2]

Abstract

Make possible to access constants in pure functions

Motivation

Pure functions cannot access environment variables, but constants are decided in compile time.

Backwards Compatibility

If the function is pure bute call calls an old contract view function, being this view only due to a constant access, the new function needs to also be view

[chriseth]

Can you give some example code, please?

[RenanSouza2]

    contract SomeContract {
        uint256 constant public ID = 0;
    }

    contract Test {
        SomeContract public some;
        
        function setSome (address _some)
        external {
            some = SomeContract(_some);
        }
        
        function getID ()
        external view returns (uint256) {
            return some.ID();
        }
    }

Shouldn't the getID() be pure as the ID cannot be changed

[chriseth]

This is a duplicate of #1290 - I actually thought that was already implemented.