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34 lines
1.0 KiB
34 lines
1.0 KiB
// Copyright 2014 The Chromium OS Authors. All rights reserved.
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// Use of this source code is governed by a BSD-style license that can be
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// found in the LICENSE file.
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#ifndef LIBBRILLO_BRILLO_VARIANT_DICTIONARY_H_
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#define LIBBRILLO_BRILLO_VARIANT_DICTIONARY_H_
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#include <map>
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#include <string>
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#include <brillo/any.h>
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#include <brillo/brillo_export.h>
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namespace brillo {
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using VariantDictionary = std::map<std::string, brillo::Any>;
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// GetVariantValueOrDefault tries to retrieve the named key from the dictionary
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// and convert it to the type T. If the value does not exist, or the type
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// conversion fails, the default value of type T is returned.
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template<typename T>
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const T GetVariantValueOrDefault(const VariantDictionary& dictionary,
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const std::string& key) {
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VariantDictionary::const_iterator it = dictionary.find(key);
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if (it == dictionary.end()) {
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return T();
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}
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return it->second.TryGet<T>();
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}
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} // namespace brillo
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#endif // LIBBRILLO_BRILLO_VARIANT_DICTIONARY_H_
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