Microcontroller programs often have to process some data before outputting it via some interface. Writing a customisable configuration engine for changing outputs based on user needs is very time consuming. This library provides an evaluatable tree structure that can be loaded on microcontrollers.

Every branch and leaf in this a TinyExprTree can be evaluated to a value. Branches can also access values computed from their leaf nodes.

A TinyExprTree<B, L, BM, LM> contains generic branch node B and leaf node L which you can customize. If you implement ComputableBranch<L, BM, LM> for B and ComputableLeaf for L, the compute(&mut self, context: &B::Context) -> B::BranchOutput method becomes available for the whole TinyExprTree.

You cannot directly construct a TinyExprTree, but can turn a alloc_gen::ConstructableTreeBranch into one.