Add type().min/max for enums

[Marenz]

fixes #11469

[Marenz]

The test is failing and I am not sure why:

semanticTests/enums/minmax.sol: FAIL
  Contract:
    contract test {
        enum MinMax { A, B, C, D }

        function min() public returns(uint) { return uint(type(MinMax).m
in); }
        function max() public returns(uint) { return uint(type(MinMax).m
ax); }

    }

    // ====
    // compileViaYul: also

  Expected result:
  // min() -> 0
  // max() -> 4

  Obtained result:
  // min() -> 0
  // max() -> FAILURE, hex"4e487b71", 0x21
  Warning: The call to "max()" returned
  [4e,48,7b,71]
  [0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,21]

Any clues are welcome!

[Marenz]

Max amount of members is 256 so this is fine

[hrkrshnn]

You need to subtract 1 from the size ;)

[axic]

Max amount of members is 256 so this is fine

Even then this should have an assert so that we find this in case the limit changes.

[Marenz]

Good points!

[Marenz]

You need to subtract 1 from the size ;)

Hmm must have forgotten to push that, my local version has it already

[chriseth]

Please add changelog entry and documentation.

[chriseth]

Suggested change

	* Type System: Add ``type().min`` and ``type().max`` for enums
	* Type System: Suppert ``type().min`` and ``type().max`` for enums.

[axic]

Suppert :)

[Marenz]

I did add the right spelling though :P

[ekpyron]

Looks good apart from the dot ;-).

[ekpyron]

LGTM.