parse/parse.go
// Copyright © 2016 Asteris, LLC
//
// 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 parse
import (
"fmt"
"github.com/hashicorp/go-multierror"
"github.com/hashicorp/hcl"
"github.com/hashicorp/hcl/hcl/ast"
)
// Parse content into a bunch of nodes
func Parse(content []byte) (resources []*Node, err error) {
obj, err := hcl.ParseBytes(content)
if err != nil {
return resources, err
}
ast.Walk(obj.Node, func(n ast.Node) (ast.Node, bool) {
baseItem, ok := n.(*ast.ObjectItem)
if !ok {
return n, true
}
item := NewNode(baseItem)
if itemErr := item.Validate(); itemErr != nil {
err = multierror.Append(err, itemErr)
return n, false
}
for _, v := range resources {
if v.ID() == item.ID() {
err = multierror.Append(fmt.Errorf("duplicate resource %s", item.ID()))
return n, false
}
}
resources = append(resources, item)
return n, false
})
return resources, err
}