typst-sympy-calculator 0.4.3

Convert typst math expressions to sympy form with ANTLR and support matrix, calculous and custom functions.

Typst Sympy Calculator

About

Typst Sympy Calculator parses Typst Math Expressions and converts it into the equivalent SymPy form. Then, calculate it and convert to typst math text.

It is designed for providing people writing in typst a ability to calculate something when writing math expression. It is based on Sympy module in Python.

The typst-calculator python package is a backend for a VS Code extension, and you also can use it just for parse typst math expression to sympy form in order to do things for yourself.

Features

• Default Math:

  • Arithmetic: Add (+), Sub (-), Dot Mul (dot), Cross Mul (times), Frac (/), Power (^), Abs (|x|), Sqrt (sqrt), etc...

  • Alphabet: a - z, A - Z, alpha - omega, Subscript (x_1), Accent Bar(hat(x)), etc...

  • Common Functions: gcd, lcm, floor, ceil, max, min, log, ln, exp, sin, cos, tan, csc, sec, cot, arcsin, sinh, arsinh, etc...

  • Funcion Symbol: f(x), f(x-1,), g(x,y), etc...

  • Calculous: Limit lim_(x -> oo) 1/x, Integration integral_1^2 x dif x, etc...

  • Calculous: Derivation (dif/(dif x) (x^2 + 1)), etc...

  • Reduce: Sum sum_(k=1)^oo (1/2)^k, Product product_(k=1)^oo (1/2)^k

  • Linear Algebra: Matrix to raw echelon form rref, Determinant det, Transpose ^T, Inverse ^(-1), etc...

  • Solve Equation: Single Equation x + 1 = 2, Multiple Equations cases(x + y = 1, x - y = 2), etc...

  • Other: Binomial binom(n, k) ...

• Custom Math (in typst file):

  • Define Accents: #let acc(x) = math.accent(x, math.grave)

  • Define Operators: #let add = math.op("add")

  • Define Symbols: #let xy = math.italic("xy") or #let mail = symbol("🖂", ("stamped", "🖃"),)

  • Define Functions:

    # typst-calculator
    
    @func()
    
    def convert_add(a, b):
    
        return a + b
    

• Typst Math Printer:

  • Complete TypstMathPrinter in TypstConverter.py

  • Custom Printer for TypstCalculator.py and TypstCalculatorServer.py

• VS Code Extension:

  • Develop a VS Code Extension for Typst Calculator

Install

pip install typst-sympy-calculator

Usage

Difference Between parse, converter, calculator, server

• TypstParser.py: parse typst math expression to ANTLR abstract syntax tree with TypstGrammar.g4;

• TypstConverter.py:

  • convert typst math expression to sympy expression via TypstMathConverter;

  • convert sympy expression to typst math expression via TypstMathPrinter;

  • has decorators for defining custom functions, operators;

  • has define_accent, define_symbol_base and define_function for defining custom accents, symbols and functions;

• TypstCalculator.py:

  • calculate sympy expression and convert to typst math expression;

  • has subs, simplify, evalf methods;

  • has set_variance and unset_variance for calculating with variance;

• DefaultTypstCalculator: define many useful functions, operators, accents, symbols;

  • Accents, Alphabet, Greeks, Arithmetic, Common Functions, Calculous, Linear Algebra, etc...

• TypstCalculatorServer:

  • has init method for initializing TypstCalculator with a typst file;

  • can define your custom functions on your typst file;

  • has simplify, subs, evalf methods for calculating with typst file;

It is a top-down design, so you can use TypstCalculatorServer directly, or use TypstCalculator with TypstConverter.

For the usage, you can see the unit test part if __name__ == '__main__': in each files.

Sympy Expressions and Typst Math Text

from TypstCalculatorServer import TypstCalculatorServer



server = TypstCalculatorServer()

typst_math = r'1 + 1'

expr = server.sympy(typst_math)

print(server.typst(expr))

from TypstCalculator import TypstCalculator



calculator = TypstCalculator()

typst_math = r'1 + 1'

expr = calculator.sympy(typst_math)

print(calculator.typst(expr))

from TypstConverter import TypstMathConverter



converter = TypstMathConverter()

typst_math = r'1 + 1'

expr = converter.sympy(typst_math)

print(converter.typst(expr))

Typst Calculator Server

The simplest way to use it is just like TypstCalculatorServer.py:

from TypstCalculatorServer import TypstCalculatorServer



server = TypstCalculatorServer()

typst_file = os.path.abspath(r'./tests/test.typ')

server.init(typst_file)

server.return_text = True  # otherwise just return sympy form

expr = server.simplify('1 + 1', typst_file)

print(expr)  # 2

server.enable_subs = False

expr = server.simplify('a + 1', typst_file)

print(expr)  # a + 1

server.enable_subs = True

expr = server.simplify('a + 1', typst_file)

print(expr)  # 2

expr = server.simplify('b + 1', typst_file)

print(expr)  # a + 2

expr = server.simplify('cmat(1, 2)', typst_file)

print(expr)  # mat(1; 2)

expr = server.simplify('f(1) + f(1)', typst_file)

print(expr)  # 2 f(1)

expr = server.simplify('xy + mail + mail.stamped', typst_file)

print(expr)  # mail + mail.stamped + xy

and the typst files tests/test.typ

#import "cal.typ": *



// set variances

#let a = 1

#let b = $a + 1$

and tests/cal.typ just like:

// define accents

#let acc(x) = math.accent(x, math.grave)



// define operators

#let add = math.op("add")

#let f = math.op("f")



// define symbols

#let xy = math.italic("xy")

#let mail = symbol("🖂", ("stamped", "🖃"),)

Default Typst Calculator

If you have not a typst file, you can use DefaultTypstCalculator.py, it define many useful functions and symbols just like:

# Symbols

abc = 'abcdefghijklmnopqrstuvwxyz'

for c in abc:

    calculator.define_symbol_base(c)

    calculator.define_symbol_base(c.upper())



# Functions

@func()

def convert_sin(expr):

    return sympy.sin(expr)

So you can use it by:

from DefaultTypstCalculator import get_default_calculator



calculator = get_default_calculator(complex_number=True)

calculator.return_text = True

operator, relation_op, additive_op, mp_op, postfix_op, \

    reduce_op, func, func_mat, constant = calculator.get_decorators()

expr = calculator.simplify('1 + 1')

assert expr == '2'

expr = calculator.evalf('1/2', n=3)

assert expr == '0.500'

calculator.set_variance('a', '1/2')

expr = calculator.simplify('a + 1')

assert expr == '3/2'

calculator.unset_variance('a')

expr = calculator.simplify('a + 1')

assert expr == 'a + 1' or expr == '1 + a'

expr = calculator.evalf('pi', n=3)

assert expr == '3.14'

expr = calculator.simplify('max(1, 2)')

assert expr == '2'

calculator.define_function('f')

expr = calculator.simplify('f(1) + f(1) - f(1)')

assert expr == 'f(1)'

expr = calculator.simplify('lim_(x -> oo) 1/x')

assert expr == '0'

Contributing

1. Clone it by git clone https://github.com/OrangeX4/typst-calculator.git

2. Install dependencies by pip install -r requirements.txt

3. Compile ANTLR grammar by python ./scripts/compile.py

4. Debug or add your code with TypstCalculatorServer.py or TypstCalculator.py, etc...

It is welcome to create an issue or pull request.

Thanks

• augustt198 / latex2sympy

• purdue-tlt / latex2sympy

• ANTLR

• Sympy

License

This project is licensed under the MIT License.