buildkit/frontend/dockerfile/parser/errors.go

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package parser
import "github.com/pkg/errors"
type ErrorLocation struct {
Ranges []Range
error
}
func (e *ErrorLocation) Unwrap() error {
return e.error
}
type Range struct {
Start Position
End Position
}
type Position struct {
Line int
Character int
}
func withLocation(err error, startLine, endLine int) error {
if err == nil {
return nil
}
return errors.WithStack(&ErrorLocation{
error: err,
Ranges: toRanges(startLine, endLine),
})
}
func toRanges(start, end int) (r []Range) {
if end <= start {
end = start
}
for i := start; i <= end; i++ {
r = append(r, Range{Start: Position{Line: i}, End: Position{Line: i}})
}
return
}