mirror of
https://github.com/opentofu/opentofu.git
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61 lines
1.5 KiB
Go
61 lines
1.5 KiB
Go
// Copyright (c) The OpenTofu Authors
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// SPDX-License-Identifier: MPL-2.0
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// Copyright (c) 2023 HashiCorp, Inc.
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// SPDX-License-Identifier: MPL-2.0
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package tofu
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import (
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"fmt"
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"sort"
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"github.com/zclconf/go-cty/cty"
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)
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// filterMarks removes any PathValueMarks from marks which cannot be applied to
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// the given value. When comparing existing marks to those from a map or other
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// dynamic value, we may not have values at the same paths and need to strip
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// out irrelevant marks.
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func filterMarks(val cty.Value, marks []cty.PathValueMarks) []cty.PathValueMarks {
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var res []cty.PathValueMarks
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for _, mark := range marks {
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// any error here just means the path cannot apply to this value, so we
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// don't need this mark for comparison.
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if _, err := mark.Path.Apply(val); err == nil {
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res = append(res, mark)
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}
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}
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return res
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}
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// marksEqual compares 2 unordered sets of PathValue marks for equality, with
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// the comparison using the cty.PathValueMarks.Equal method.
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func marksEqual(a, b []cty.PathValueMarks) bool {
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if len(a) == 0 && len(b) == 0 {
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return true
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}
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if len(a) != len(b) {
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return false
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}
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less := func(s []cty.PathValueMarks) func(i, j int) bool {
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return func(i, j int) bool {
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// the sort only needs to be consistent, so use the GoString format
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// to get a comparable value
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return fmt.Sprintf("%#v", s[i]) < fmt.Sprintf("%#v", s[j])
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}
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}
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sort.Slice(a, less(a))
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sort.Slice(b, less(b))
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for i := 0; i < len(a); i++ {
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if !a[i].Equal(b[i]) {
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return false
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}
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}
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return true
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}
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