Logic Tracer

Logic Traces is a simple crate that reads a logical proposition and interprets it to build the truth table and the AST of the proposition.

Makes use of regular expressions are used to validate the input and to tokenize the proposition.
Also implements the Shunting Yard Algorithm (not yet) to build the AST.

Examples

Check the examples direcotry to see how to use the crate.

cargo run --example <example name>

Roadmap

• Read a logical proposition
• Tokenize the proposition
• Validate Input Tokens (only valid tokens)
  • Variables (only letters)
  • Logical Operators (and, or, not, implies, iff)
  • Mathematical Operators (add, sub, mul, div, pow)
  • Compounds (only numbers, variables, variable with subindex)
• Parse the proposition (make sure it is valid)
• Build the AST (Shunting Yard Algorithm) (use postfix notation)
• Add notation to the AST (prefix, infix, postfix)
• Solve proposition (evaluate the AST)
• Add good looking output for truth table, ast, function, etc.
• Reduce a proposition to its simplest form (boolean algebra)
  • Reagrupate Compounds (boolean algebra)
  • Apply De Morgan's laws (boolean algebra)
  • Apply distributive, associative and commutative laws (boolean algebra)
• Add more examples
• Add more tests
• Improve documentation
• Improve the import/export of the crate (to improve it's usability as a library)

Considerations

• Add some parallel computation (to improve the performance)

Future

• Add comlex math iteration (sums, products, etc.) (to be able to solve more complex propositions)
  • Test a proposition with complex math iteration
• Add combinational logic (multiplexers, decoders, etc.)
• Add sequential logic (flip-flops, registers, etc.)
• Add some geometric demonstration (to be able to solve geometric problems)
  • \sum_{i=1}^{n} i = \frac{n(n+1)}{2} or smth like that

I want to make this crate copletely independent of any other crate. So, I will implement the parser myself... But also I'll check the pest crate to see how it works and to see if I can use it in some other project... (maybe in the future)

• Check PEST grammar declaration using .pest files

License

This project is licensed under the Compounds of the MIT license