ccalc-engine

Core computation engine for ccalc.

This crate provides the language pipeline:

input string
    └─► tokenizer (parser::tokenize)
            └─► recursive-descent parser (parser::parse)  →  Stmt AST
                    └─► evaluator (eval::eval)  →  Value

Modules

• [mod@env] — Env type, Value enum, workspace save/load
• [eval] — AST types, evaluator, number formatters, Base
• [parser] — tokenizer and recursive-descent parser, Stmt
• [exec] — block/loop/function executor, script search path
• [io] — file descriptor table for fopen/fclose/fgetl/fprintf