# Parser

Mathy parses token arrays into symbolic trees that can be inspected, transformed, and visualized.

## Motivation¶

While a Token array verifies that text maps to some mathematical expression, its form fails to encode the `Order of Operations`

that is required to evaluate the end result.

Said another way, a token array is sufficient to make sure there are not errors in an expression, but a tree encoding the order of operations is required to iterate the expression and calculate its numeric value.

## Examples¶

To help better understand what the parser does, consider a few examples of expressions and their visualized trees:

Text | Tree |
---|---|

`4x` | |

`4x / 2y^7` | |

`4x + (1/3)y + 7x` | |

`4x + 1/3y + 7x` | |

`(28 + 1j)(17j + 2y)` |

Last update: November 29, 2019