ef03b1e3df
Upgrade dependent version: github.com/open-policy-agent/opa v0.18.0 -> v0.45.0 Signed-off-by: hongzhouzi <hongzhouzi@kubesphere.io> Signed-off-by: hongzhouzi <hongzhouzi@kubesphere.io>
43 lines
1.2 KiB
Go
43 lines
1.2 KiB
Go
// Copyright 2021 The OPA Authors. All rights reserved.
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// Use of this source code is governed by an Apache2
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// license that can be found in the LICENSE file.
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package future
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import (
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"fmt"
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"github.com/open-policy-agent/opa/ast"
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)
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// ParserOptionsFromFutureImports transforms a slice of `ast.Import`s into the
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// `ast.ParserOptions` that can be used to parse a statement according to the
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// included "future.keywords" and "future.keywords.xyz" imports.
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func ParserOptionsFromFutureImports(imports []*ast.Import) (ast.ParserOptions, error) {
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popts := ast.ParserOptions{
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FutureKeywords: []string{},
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}
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for _, imp := range imports {
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path := imp.Path.Value.(ast.Ref)
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if !ast.FutureRootDocument.Equal(path[0]) {
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continue
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}
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if len(path) >= 2 {
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if string(path[1].Value.(ast.String)) != "keywords" {
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return popts, fmt.Errorf("unknown future import: %v", imp)
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}
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if len(path) == 2 {
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// retun, one "future.keywords" import means we can disregard any others
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return ast.ParserOptions{AllFutureKeywords: true}, nil
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}
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}
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if len(path) == 3 {
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if imp.Alias != "" {
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return popts, fmt.Errorf("alias not supported")
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}
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popts.FutureKeywords = append(popts.FutureKeywords, string(path[2].Value.(ast.String)))
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}
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}
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return popts, nil
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}
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