gotosocial/vendor/github.com/tdewolff/parse/v2/error.go
Tobi Smethurst ce190d867c
Text/status parsing fixes (#141)
* aaaaaa

* vendor minify

* update + test markdown parsing
2021-08-16 19:17:56 +02:00

48 lines
1.2 KiB
Go

package parse
import (
"bytes"
"fmt"
"io"
)
// Error is a parsing error returned by parser. It contains a message and an offset at which the error occurred.
type Error struct {
Message string
Line int
Column int
Context string
}
// NewError creates a new error
func NewError(r io.Reader, offset int, message string, a ...interface{}) *Error {
line, column, context := Position(r, offset)
if 0 < len(a) {
message = fmt.Sprintf(message, a...)
}
return &Error{
Message: message,
Line: line,
Column: column,
Context: context,
}
}
// NewErrorLexer creates a new error from an active Lexer.
func NewErrorLexer(l *Input, message string, a ...interface{}) *Error {
r := bytes.NewBuffer(l.Bytes())
offset := l.Offset()
return NewError(r, offset, message, a...)
}
// Position returns the line, column, and context of the error.
// Context is the entire line at which the error occurred.
func (e *Error) Position() (int, int, string) {
return e.Line, e.Column, e.Context
}
// Error returns the error string, containing the context and line + column number.
func (e *Error) Error() string {
return fmt.Sprintf("%s on line %d and column %d\n%s", e.Message, e.Line, e.Column, e.Context)
}