Hein
45 lines
1.1 KiB
Go
45 lines
1.1 KiB
Go
// Copyright 2025 The Go MCP SDK Authors. All rights reserved.
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// Use of this source code is governed by an MIT-style
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// license that can be found in the LICENSE file.
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package util
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import (
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"cmp"
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"fmt"
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"iter"
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"slices"
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)
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// Helpers below are copied from gopls' moremaps package.
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// Sorted returns an iterator over the entries of m in key order.
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func Sorted[M ~map[K]V, K cmp.Ordered, V any](m M) iter.Seq2[K, V] {
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// TODO(adonovan): use maps.Sorted if proposal #68598 is accepted.
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return func(yield func(K, V) bool) {
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keys := KeySlice(m)
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slices.Sort(keys)
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for _, k := range keys {
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if !yield(k, m[k]) {
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break
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}
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}
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}
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}
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// KeySlice returns the keys of the map M, like slices.Collect(maps.Keys(m)).
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func KeySlice[M ~map[K]V, K comparable, V any](m M) []K {
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r := make([]K, 0, len(m))
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for k := range m {
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r = append(r, k)
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}
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return r
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}
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// Wrapf wraps *errp with the given formatted message if *errp is not nil.
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func Wrapf(errp *error, format string, args ...any) {
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if *errp != nil {
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*errp = fmt.Errorf("%s: %w", fmt.Sprintf(format, args...), *errp)
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}
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}
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