package parser

import (
	"io/fs"

	"asciigoat.org/core/lexer"
)

// NewError creates a lexer.Error using a lexer.Position
func NewError(pos lexer.Position, content, hint string, err error) *lexer.Error {
	return &lexer.Error{
		Line:    pos.Line,
		Column:  pos.Column,
		Content: content,
		Hint:    hint,
		Err:     err,
	}
}

// ErrPlusPosition returns a copy of the given [lexer.Error]
// offsetting the Line/Column information.
func ErrPlusPosition(pos lexer.Position, e *lexer.Error) *lexer.Error {
	pos.Add(lexer.Position{
		Line:   e.Line,
		Column: e.Column,
	})

	return NewError(pos, e.Content, e.Hint, e.Err)
}

// NewErrIncompleteQuotedString returns a [lexer.Error]
// indicating the quoted string being parsed wasn't correctly
// terminated
func NewErrIncompleteQuotedString(p *TextParser) *lexer.Error {
	return newErrIncomplete(p, "incomplete quoted string")
}

func newErrIncomplete(p *TextParser, hint string) *lexer.Error {
	pos, s := p.Emit()
	pos.Add(GetPositionalLength(s))

	return NewError(pos, s, hint, fs.ErrInvalid)
}