The pratt command is a stripped-down expression parser based on the Pratt parser. To help understand Pratt parsing, the command also provides a naive, recursive, right-associative expression parser and a naive, iterative, left-associative expression parser.

Try it with:

go run ./main.go '1   2 * 3'

The svg command is meant to be used with the pratt command. It generates and opens an SVG image of the expression tree in the default SVG viewer.

Try it with:

go install ./...
pratt '1 * 2   3 * 4' | svg -o

You can install by using the following command.

go install github.com/gozeloglu/pratt@latest

Thanks to @juliaogris for this tool. Also, thanks to her for letting me improve new features.

MIT