Here is a list of all enum values with links to the classes they belong to:

Constant : Bullet
Linear : Bullet
Melee : Weapon
None : Bullet
Ranged : Weapon
Smoke : Bullet
Throwable : Weapon
WPN_FM_AUTO : Weapon
WPN_FM_BURST : Weapon
WPN_FM_PROJ : Weapon
WPN_FM_SEMI : Weapon
WPN_READY : Weapon
WPN_RELOADING : Weapon
WPN_SHOOTING : Weapon