package token

import "fmt"

// Token represents a single element in a source file.
// The characters that make up an identifier are grouped into a single token.
// This makes parsing easier and allows us to do better syntax checks.
type Token struct {
	Bytes    []byte
	Position int
	Kind     Kind
}

// End returns the position after the token.
func (t *Token) End() int {
	return t.Position + len(t.Bytes)
}

// String creates a human readable representation for debugging purposes.
func (t *Token) String() string {
	return fmt.Sprintf("%s %s", t.Kind, t.Text())
}

// Reset resets the token to default values.
func (t *Token) Reset() {
	t.Kind = Invalid
	t.Position = 0
	t.Bytes = nil
}

// Text returns the token text.
func (t *Token) Text() string {
	return string(t.Bytes)
}