https://github.com/xfnty/calc

Simple mathematical expression solver that supports operator priorities.
https://github.com/xfnty/calc

ast beginner-project calculator lexer parser

Last synced: 2 days ago
JSON representation

Simple mathematical expression solver that supports operator priorities.

• Host: GitHub
• URL: https://github.com/xfnty/calc
• Owner: xfnty
• Created: 2023-08-30T18:55:47.000Z (over 1 year ago)
• Default Branch: stable
• Last Pushed: 2024-01-28T07:41:47.000Z (12 months ago)
• Last Synced: 2024-01-28T08:28:32.552Z (12 months ago)
• Topics: ast, beginner-project, calculator, lexer, parser
• Language: C++
• Homepage:
• Size: 1.06 MB
• Stars: 1
• Watchers: 1
• Forks: 0
• Open Issues: 0
• Metadata Files:
  • Readme: README.md

Awesome Lists containing this project

README

        
# Simple Calculator in C++

![preview.gif](.github/preview.gif)

Much simpler [python version](https://github.com/xfnty/calc/tree/simple_version) (140 loc)

## Features

- REPL

- Floating-point numbers

- Mathematical constants: `Pi`, `e`

- Operators: `+`, `-`, `*`, `/`, `^`, `%`, `!`

- Grouping expressions: `(...)`, `|...|`

## Building and Running

- Configure, build and run (after cloning the repo): `make`

- Configure CMake: `make c`

- Build the project: `make b`, `make build`

- Build and run: `make args="'-2 * 2 + 1.5!'"`

- Run: `make r ...`

- Run using gdb: `make d args="'1+5!'"`

`make configure build_type=Release` will disable debug messages.

## Credits & References

- [Crafting Interpreters](https://craftinginterpreters.com/) by Bob Nystrom

- [Catch2](https://github.com/catchorg/Catch2/)

- [expected](https://github.com/TartanLlama/expected)

- [fmt](https://github.com/fmtlib/fmt)

- [spdlog](https://github.com/gabime/spdlog)

- [cpp-linenoise](https://github.com/yhirose/cpp-linenoise)

## TODO

- Parser error messages

- Make macros in `Util.h` an inline functions

- Better stack-related error handling

- Remove `else` blocks at the end of functions in `ExpressionEvaluator`

- Fix `^` operator and increase its precedence

- Better `std::string` usage

- Builtin functions: `sin()`, `ctan()`, `ln()`, `floor()`, `ceil()` ...

- Fix Windows build