system/host/fidl/include/fidl/error_reporter.h

// Copyright 2017 The Fuchsia Authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.

#ifndef ZIRCON_SYSTEM_HOST_FIDL_INCLUDE_FIDL_ERROR_REPORTER_H_
#define ZIRCON_SYSTEM_HOST_FIDL_INCLUDE_FIDL_ERROR_REPORTER_H_

#include <string>
#include <vector>

#include "source_location.h"
#include "string_view.h"
#include "token.h"

namespace fidl {

class ErrorReporter {
public:
    class Counts {
    public:
        Counts(const ErrorReporter* reporter)
            : reporter_(reporter),
              num_errors_(reporter->errors().size()),
              num_warnings_(reporter->warnings().size()) {}
        bool NoNewErrors() { return num_errors_ == reporter_->errors().size(); }
        bool NoNewWarning() { return num_warnings_ == reporter_->warnings().size(); }
    private:
        const ErrorReporter* reporter_;
        const size_t num_errors_;
        const size_t num_warnings_;
    };

    void ReportError(const SourceLocation& location, StringView message);
    void ReportError(const Token& token, StringView message);
    void ReportError(StringView message);
    void ReportWarning(const SourceLocation& location, StringView message);
    void PrintReports();
    Counts Checkpoint() const { return Counts(this); };
    const std::vector<std::string>& errors() const { return errors_; };
    const std::vector<std::string>& warnings() const { return warnings_; };

private:
    std::vector<std::string> errors_;
    std::vector<std::string> warnings_;
};

} // namespace fidl

#endif // ZIRCON_SYSTEM_HOST_FIDL_INCLUDE_FIDL_ERROR_REPORTER_H_