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Fix partial negative indice support in v4 #146

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merged 2 commits into from
Oct 20, 2021
Merged

Fix partial negative indice support in v4 #146

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3dcaf12
Add gitignore
zqzten Jul 8, 2021
19e83ee
Fix partial negative indice support
zqzten Jul 8, 2021
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6 changes: 6 additions & 0 deletions .gitignore
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Original file line number Diff line number Diff line change
@@ -0,0 +1,6 @@
# editor and IDE paraphernalia
.idea
.vscode

# macOS paraphernalia
.DS_Store
21 changes: 21 additions & 0 deletions patch.go
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Original file line number Diff line number Diff line change
Expand Up @@ -412,6 +412,17 @@ func (d *partialArray) set(key string, val *lazyNode) error {
if err != nil {
return err
}

if idx < 0 {
if !SupportNegativeIndices {
return errors.Wrapf(ErrInvalidIndex, "Unable to access invalid index: %d", idx)
}
if idx < -len(*d) {
return errors.Wrapf(ErrInvalidIndex, "Unable to access invalid index: %d", idx)
}
idx += len(*d)
}

(*d)[idx] = val
return nil
}
Expand Down Expand Up @@ -462,6 +473,16 @@ func (d *partialArray) get(key string) (*lazyNode, error) {
return nil, err
}

if idx < 0 {
if !SupportNegativeIndices {
return nil, errors.Wrapf(ErrInvalidIndex, "Unable to access invalid index: %d", idx)
}
if idx < -len(*d) {
return nil, errors.Wrapf(ErrInvalidIndex, "Unable to access invalid index: %d", idx)
}
idx += len(*d)
}

if idx >= len(*d) {
return nil, errors.Wrapf(ErrInvalidIndex, "Unable to access invalid index: %d", idx)
}
Expand Down