package saccharine

import "git.maximhutz.com/max/lambda/pkg/token"

// scanner is the declarative lexer for the Saccharine language.
var scanner = token.NewScanner[TokenType]().
	On(`:=`, TokenAssign, 1).
	On(`\(`, TokenOpenParen, 0).
	On(`\)`, TokenCloseParen, 0).
	On(`\{`, TokenOpenBrace, 0).
	On(`\}`, TokenCloseBrace, 0).
	On(`;`, TokenHardBreak, 0).
	On(`\n`, TokenSoftBreak, 0).
	On(`\\`, TokenSlash, 0).
	On(`\.`, TokenDot, 0).
	On(`[a-zA-Z0-9_]+`, TokenAtom, 0).
	Skip(`#[^\n]*`, 0).
	Skip(`[^\S\n]+`, 0)

// scan tokenizes a string into Saccharine tokens.
func scan(input string) ([]Token, error) {
	return scanner.Scan(input)
}