/
map.go
183 lines (149 loc) · 4.04 KB
/
map.go
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// Copyright 2024 The Carvel Authors.
// SPDX-License-Identifier: Apache-2.0
package overlay
import (
"carvel.dev/ytt/pkg/yamlmeta"
)
func (o Op) mergeMapItem(leftMap *yamlmeta.Map, newItem *yamlmeta.MapItem,
parentMatchChildDefaults MatchChildDefaultsAnnotation) error {
matchChildDefaults, err := NewMatchChildDefaultsAnnotation(newItem, parentMatchChildDefaults)
if err != nil {
return err
}
ann, err := NewMapItemMatchAnnotation(newItem, parentMatchChildDefaults, o.Thread)
if err != nil {
return err
}
leftIdxs, err := ann.Indexes(leftMap)
if err != nil {
if err, ok := err.(MatchAnnotationNumMatchError); ok && err.isConditional() {
return nil
}
return err
}
if len(leftIdxs) == 0 {
// No need to traverse further
leftMap.Items = append(leftMap.Items, newItem)
return nil
}
for _, leftIdx := range leftIdxs {
replace := true
if leftMap.Items[leftIdx].Value != nil {
replace, err = o.apply(leftMap.Items[leftIdx].Value, newItem.Value, matchChildDefaults)
if err != nil {
return err
}
}
if replace {
// left side type and metas are preserved
err := leftMap.Items[leftIdx].SetValue(newItem.Value)
if err != nil {
return err
}
leftMap.Items[leftIdx].SetPosition(newItem.Position)
}
}
return nil
}
func (o Op) removeMapItem(leftMap *yamlmeta.Map, newItem *yamlmeta.MapItem,
parentMatchChildDefaults MatchChildDefaultsAnnotation) error {
ann, err := NewMapItemMatchAnnotation(newItem, parentMatchChildDefaults, o.Thread)
if err != nil {
return err
}
leftIdxs, err := ann.Indexes(leftMap)
if err != nil {
if err, ok := err.(MatchAnnotationNumMatchError); ok && err.isConditional() {
return nil
}
return err
}
for _, leftIdx := range leftIdxs {
leftMap.Items[leftIdx] = nil
}
// Prune out all nil items
updatedItems := []*yamlmeta.MapItem{}
for _, item := range leftMap.Items {
if item != nil {
updatedItems = append(updatedItems, item)
}
}
leftMap.Items = updatedItems
return nil
}
func (o Op) replaceMapItem(leftMap *yamlmeta.Map, newItem *yamlmeta.MapItem,
parentMatchChildDefaults MatchChildDefaultsAnnotation) error {
ann, err := NewMapItemMatchAnnotation(newItem, parentMatchChildDefaults, o.Thread)
if err != nil {
return err
}
replaceAnn, err := NewReplaceAnnotation(newItem, o.Thread)
if err != nil {
return err
}
leftIdxs, err := ann.Indexes(leftMap)
if err != nil {
if err, ok := err.(MatchAnnotationNumMatchError); ok && err.isConditional() {
return nil
}
return err
}
for _, leftIdx := range leftIdxs {
newVal, err := replaceAnn.Value(leftMap.Items[leftIdx])
if err != nil {
return err
}
// left side fields are not preserved.
// probably need to rethink how to merge left and right once those fields are needed
leftMap.Items[leftIdx] = newItem.DeepCopy()
err = leftMap.Items[leftIdx].SetValue(newVal)
if err != nil {
return err
}
}
if len(leftIdxs) == 0 && replaceAnn.OrAdd() {
newVal, err := replaceAnn.Value(nil)
if err != nil {
return err
}
leftMap.Items = append(leftMap.Items, newItem.DeepCopy())
err = leftMap.Items[len(leftMap.Items)-1].SetValue(newVal)
if err != nil {
return err
}
}
return nil
}
func (o Op) assertMapItem(leftMap *yamlmeta.Map, newItem *yamlmeta.MapItem,
parentMatchChildDefaults MatchChildDefaultsAnnotation) error {
matchChildDefaults, err := NewMatchChildDefaultsAnnotation(newItem, parentMatchChildDefaults)
if err != nil {
return err
}
ann, err := NewMapItemMatchAnnotation(newItem, parentMatchChildDefaults, o.Thread)
if err != nil {
return err
}
testAnn, err := NewAssertAnnotation(newItem, o.Thread)
if err != nil {
return err
}
leftIdxs, err := ann.Indexes(leftMap)
if err != nil {
if err, ok := err.(MatchAnnotationNumMatchError); ok && err.isConditional() {
return nil
}
return err
}
for _, leftIdx := range leftIdxs {
err := testAnn.Check(leftMap.Items[leftIdx])
if err != nil {
return err
}
_, err = o.apply(leftMap.Items[leftIdx].Value, newItem.Value, matchChildDefaults)
if err != nil {
return err
}
}
return nil
}