regex/stateContents.go

package main

import "slices"

type stateContents []int // Represents the contents of the current state - character classes can have multiple contents, which is why it is represented as a slice

func newContents(data ...int) stateContents {
	toReturn := stateContents{}
	for _, i := range data {
		toReturn = append(toReturn, i)
	}
	return toReturn
}

func rune2Contents(data []rune) stateContents { // Convert a rune slice into a stateContents type, then return it. The runes are simply cast to ints.
	toReturn := newContents()
	for _, r := range data {
		toReturn = append(toReturn, int(r))
	}
	return toReturn
}

// Returns true if c contains the given value
func (c stateContents) contains(val int) bool {
	return slices.Contains(c, val)
}