package utpl

import "fmt"

type Position struct {
	Line   int
	Column int
}

func (p Position) String() string {
	return fmt.Sprintf("line %d, column %d", p.Line, p.Column)
}

type ParseError struct {
	Message string
	Pos     Position
	Token   string
}

func (e ParseError) Error() string {
	return fmt.Sprintf("%s: %s (token: %q)", e.Pos, e.Message, e.Token)
}

type ExecError struct {
	Pos     Position
	Message string
}

func (e ExecError) Error() string {
	return fmt.Sprintf("%s: %s", e.Pos, e.Message)
}

type UnsafeRawError struct {
	Message string
	Pos     Position
	Param   string
	Value   string
}

func (e UnsafeRawError) Error() string {
	return fmt.Sprintf("%s: %s (param: %q, value: %q)", e.Pos, e.Message, e.Param, e.Value)
}