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// Copyright 2019 The Chromium Authors
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#ifndef CHROMEOS_COMPONENTS_QUICK_ANSWERS_SEARCH_RESULT_PARSERS_RESULT_PARSER_H_
#define CHROMEOS_COMPONENTS_QUICK_ANSWERS_SEARCH_RESULT_PARSERS_RESULT_PARSER_H_
#include <memory>
#include <string>
#include "base/values.h"
#include "chromeos/components/quick_answers/quick_answers_model.h"
namespace quick_answers {
// Parser interface.
class ResultParser {
public:
virtual ~ResultParser() = default;
// Helper parser function to get the first element in a value list, which is
// expected to be a dictionary.
static const base::Value::Dict* GetFirstDictElementFromList(
const base::Value::Dict& dict,
const std::string& path);
// Helper parser function to remove known HTML tags from a std::string.
static std::string RemoveKnownHtmlTags(const std::string& input);
// Parse the result into `quick_answer`. All `ResultParser`s must support this
// for now for backward compatibility reason. `Parse` method would be deleted
// after we migrate interfaces of all parsers.
virtual bool Parse(const base::Value::Dict& result,
QuickAnswer* quick_answer) = 0;
// Interfaces for supporting Rich Answers.
virtual std::unique_ptr<StructuredResult> ParseInStructuredResult(
const base::Value::Dict& result);
// `quick_answer` can be modified even if `PopulateQuickAnswer` returns false,
// i.e. do not assume that `quick_answer` is un-modified if this method
// returns false.
virtual bool PopulateQuickAnswer(const StructuredResult& structured_result,
QuickAnswer* quick_answer);
// Returns true if this parser supports the new interfaces. Note that all
// parsers must support old interfaces even if it supports new interfaces.
virtual bool SupportsNewInterface() const;
};
// A factory class for creating ResultParser based on the |one_namespace_type|.
class ResultParserFactory {
public:
// Creates ResultParser based on the |one_namespace_type|.
static std::unique_ptr<ResultParser> Create(int one_namespace_type);
virtual ~ResultParserFactory() = default;
};
} // namespace quick_answers
#endif // CHROMEOS_COMPONENTS_QUICK_ANSWERS_SEARCH_RESULT_PARSERS_RESULT_PARSER_H_
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