sandboxed-api/sandboxed_api/tools/clang_generator/diagnostics.cc

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// Copyright 2020 Google LLC
//
// 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
//
// https://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 "sandboxed_api/tools/clang_generator/diagnostics.h"
#include <cstdint>
#include <utility>
#include "absl/status/status.h"
#include "absl/strings/cord.h"
#include "absl/strings/string_view.h"
#include "absl/types/optional.h"
#include "clang/Basic/Diagnostic.h"
namespace sapi {
constexpr absl::string_view kSapiStatusPayload =
"https://github.com/google/sandboxed-api";
absl::Status MakeStatusWithDiagnostic(clang::SourceLocation loc,
absl::StatusCode code,
absl::string_view message) {
absl::Status status(code, message);
absl::Cord payload;
uint64_t raw_loc = loc.getRawEncoding();
payload.Append(
absl::string_view(reinterpret_cast<char*>(&raw_loc), sizeof(raw_loc)));
status.SetPayload(kSapiStatusPayload, std::move(payload));
return status;
}
absl::Status MakeStatusWithDiagnostic(clang::SourceLocation loc,
absl::string_view message) {
return MakeStatusWithDiagnostic(loc, absl::StatusCode::kUnknown, message);
}
absl::optional<clang::SourceLocation> GetDiagnosticLocationFromStatus(
const absl::Status& status) {
if (auto payload =
status.GetPayload(kSapiStatusPayload).value_or(absl::Cord());
payload.size() == sizeof(uint64_t)) {
return clang::SourceLocation::getFromRawEncoding(
*reinterpret_cast<const uint64_t*>(payload.Flatten().data()));
}
return absl::nullopt;
}
namespace {
clang::DiagnosticBuilder GetDiagnosticBuilder(
clang::DiagnosticsEngine& de, clang::SourceLocation loc,
clang::DiagnosticsEngine::Level level, absl::string_view message) {
clang::DiagnosticBuilder builder =
de.Report(loc, de.getCustomDiagID(level, "header generation: %0"));
builder.AddString(llvm::StringRef(message.data(), message.size()));
return builder;
}
} // namespace
clang::DiagnosticBuilder ReportFatalError(clang::DiagnosticsEngine& de,
clang::SourceLocation loc,
absl::string_view message) {
return GetDiagnosticBuilder(de, loc, clang::DiagnosticsEngine::Fatal,
message);
}
clang::DiagnosticBuilder ReportWarning(clang::DiagnosticsEngine& de,
clang::SourceLocation loc,
absl::string_view message) {
return GetDiagnosticBuilder(de, loc, clang::DiagnosticsEngine::Warning,
message);
}
} // namespace sapi