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errors.go
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/
errors.go
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package parser
import (
"github.com/khulnasoft/devkit/util/stack"
"github.com/pkg/errors"
)
// ErrorLocation gives a location in source code that caused the error
type ErrorLocation struct {
Location []Range
error
}
// Unwrap unwraps to the next error
func (e *ErrorLocation) Unwrap() error {
return e.error
}
// Range is a code section between two positions
type Range struct {
Start Position
End Position
}
// Position is a point in source code
type Position struct {
Line int
Character int
}
func withLocation(err error, start, end int) error {
return WithLocation(err, toRanges(start, end))
}
// WithLocation extends an error with a source code location
func WithLocation(err error, location []Range) error {
if err == nil {
return nil
}
var el *ErrorLocation
if errors.As(err, &el) {
return err
}
return stack.Enable(&ErrorLocation{
error: err,
Location: location,
})
}
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
}