mirror of
https://github.com/superseriousbusiness/gotosocial
synced 2024-12-21 10:13:11 +00:00
48 lines
1.2 KiB
Go
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)
|
||
|
|
}
|