The code is split into three parts:

• compiler, which compiles from the FOPPL-ish language to an RL form
• evaluator, which consumes the RL form and produces a policy
• common, with code common to the two

Compiler has the following steps:

• Parse the FOPPL-ish language
• Desugar it
• Partially evaluate it to graph intermediate form
• Compile to the RL intermediate form
• Serialize to a storage format

For the partial evaluation, we do the following steps:

• Gather all stochastic & decision variables and their possible values / distributions, respectively
• Gather dependency graph
• Gather constraints

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Using it:

To compile a program called path/to/myfile, run cargo run --bin compiler path/to/myfile path/to/output. The first time you do that it'll compile a bunch of stuff, but should be pretty fast after that. Paths are relative to the root directory of this project.

That will run in debug mode. To run in optimized mode (takes longer to compile but runs faster), run cargo run --release --bin compiler path/to/myfile path/to/output.