### Directories
* `btrfs`
* Contains btrfs specific code
* `lang`
* Contains generic language code
### Modules
* `lang/functions.rs`
* `lang/variables.rs`
Manages functions and variable lifetimes.
* `lang/ast.rs`
* `lang/eval/*.rs`
* `lang/parse.rs`
* `lang/semantics.rs`
Generic language modules. Abstract syntax tree data structure, runtime
evaluation, AST parsing, and semantic analysis.
* `btrfs/structs.rs`
* `btrfs/defintions.rs`
* `btrfs/fs.rs`
Contains btrfs on-disk structure definitions and helpers to read data off disk.