Convert EvalEnv from List -> Map - Githubissues

ChildsplayOSU / bogl

Haskell implementation of the BoGL language

https://bogl.engr.oregonstate.edu

BSD 3-Clause "New" or "Revised" License

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Convert EvalEnv from List -> Map #167

Closed montymxb closed 3 years ago

montymxb commented 3 years ago

Closes #161. Initial workings converting the runtime env to a Map. These changes need scrutinizing:

Converted the type synonym for EvalEnv to a separate data type, with constructors for List and Map based envs respectively.
Adds RuntimeEnv typeclass that describes operations that can be performed on an env
- insertEvalEnv
- extendEvalEnv
- unionEvalEnv
- lookupEvalEnv

The base for producing all environments is emptyEvalEnv. Changing this changes the base type of the env in all cases.