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matcher.go
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matcher.go
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/*
* Copyright (C) 2023 Google 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 terraform
import tfjson "github.com/hashicorp/terraform-json"
// And is a Matcher that applies when all of its containing Matcher instances Match.
type And[S Schema] []Matcher[S]
// Or is a Matcher that applies when any of its containing Matcher instances Match.
type Or[S Schema] []Matcher[S]
// Match returns true when a name and Schema Match for all the containing Matcher instances.
func (and And[S]) Match(name string, data S) bool {
for _, matcher := range and {
if !matcher.Match(name, data) {
return false
}
}
return true
}
// Match returns true when a name and Schema Match for any the containing Matcher instances.
func (or Or[S]) Match(name string, data S) bool {
for _, matcher := range or {
if matcher.Match(name, data) {
return true
}
}
return len(or) == 0
}
// Matcher matches against a name and a Schema.
type Matcher[S Schema] interface {
// Match a name and a Schema.
Match(name string, data S) bool
}
// MatchName is a Matcher tha only matches a name.
type MatchName[S Schema] string
// Match matches against a name only.
func (m MatchName[S]) Match(name string, _ S) bool {
return name == string(m)
}
// AttrMatcher is a Matcher for tfjson.SchemaAttribute data.
type AttrMatcher Matcher[*tfjson.SchemaAttribute]
// MatchIsDeprecated is a Matcher for tfjson.SchemaAttribute Deprecated attribute.
type MatchIsDeprecated bool
// Match whether tfjson.SchemaAttribute Deprecated is the bool value of the MatchIsDeprecated receiver.
func (m MatchIsDeprecated) Match(_ string, data *tfjson.SchemaAttribute) bool {
if data == nil {
return false
}
return data.Deprecated == bool(m)
}
// MatchIsComputed is a Matcher for tfjson.SchemaAttribute Computed attribute.
type MatchIsComputed bool
// Match whether tfjson.SchemaAttribute Computed is the bool value of the MatchIsDeprecated receiver.
func (m MatchIsComputed) Match(_ string, data *tfjson.SchemaAttribute) bool {
if data == nil {
return false
}
return data.Computed == bool(m)
}
// Not returns is a Matcher that negates its result i.e. not Matcher.
func Not[S Schema](matcher Matcher[S]) Matcher[S] {
return &matchIsNot[S]{
matcher: matcher,
}
}
type matchIsNot[S Schema] struct {
matcher Matcher[S]
}
func (m matchIsNot[S]) Match(name string, data S) bool {
return !m.matcher.Match(name, data)
}