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// Copyright 2019 Red Hat, Inc
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
// http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.)
package json
import (
"github.com/coreos/vcontext/tree"
// todo: rewrite this dep
json "github.com/coreos/go-json"
)
func UnmarshalToContext(raw []byte) (tree.Node, error) {
var ast json.Node
if err := json.Unmarshal(raw, &ast); err != nil {
return nil, err
}
node := fromJsonNode(ast)
tree.FixLineColumn(node, raw)
return node, nil
}
func fromJsonNode(n json.Node) tree.Node {
m := tree.MarkerFromIndices(int64(n.Start), int64(n.End))
switch v := n.Value.(type) {
case map[string]json.Node:
ret := tree.MapNode{
Marker: m,
Children: make(map[string]tree.Node, len(v)),
Keys: make(map[string]tree.Leaf, len(v)),
}
for key, child := range v {
ret.Children[key] = fromJsonNode(child)
ret.Keys[key] = tree.Leaf{
Marker: tree.MarkerFromIndices(int64(child.KeyStart), int64(child.KeyEnd)),
}
}
return ret
case []json.Node:
ret := tree.SliceNode{
Marker: m,
Children: make([]tree.Node, 0, len(v)),
}
for _, child := range v {
ret.Children = append(ret.Children, fromJsonNode(child))
}
return ret
default:
return tree.Leaf{
Marker: m,
}
}
}
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