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// Copyright 2018 The Amber Authors.
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
// http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
#include "amber/result.h"
#include <sstream>
namespace amber {
Result::Result(const std::string& err) {
errors_.emplace_back(err);
}
Result& Result::operator+=(const Result& res) {
errors_.insert(std::end(errors_), std::begin(res.errors_),
std::end(res.errors_));
return *this;
}
Result& Result::operator+=(const std::string& err) {
errors_.emplace_back(err);
return *this;
}
std::string Result::Error() const {
static const char* kNoErrorMsg = "<no error message given>";
switch (errors_.size()) {
case 0:
return "";
case 1:
return errors_[0].size() > 0 ? errors_[0] : kNoErrorMsg;
default: {
std::stringstream ss;
ss << errors_.size() << " errors:";
for (size_t i = 0; i < errors_.size(); i++) {
auto& err = errors_[i];
ss << "\n";
ss << " (" << (i + 1) << ") ";
ss << (err.size() > 0 ? err : kNoErrorMsg);
}
return ss.str();
}
}
}
} // namespace amber
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