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/*
* Copyright (C) 2015 The Android Open Source Project
*
* 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.
*/
#ifndef AAPT_DIAGNOSTICS_H
#define AAPT_DIAGNOSTICS_H
#include <iostream>
#include <sstream>
#include <string>
#include "android-base/macros.h"
#include "androidfw/StringPiece.h"
#include "Source.h"
#include "util/Util.h"
namespace aapt {
struct DiagMessageActual {
Source source;
std::string message;
};
struct DiagMessage {
public:
DiagMessage() = default;
explicit DiagMessage(const android::StringPiece& src) : source_(src) {}
explicit DiagMessage(const Source& src) : source_(src) {}
explicit DiagMessage(size_t line) : source_(Source().WithLine(line)) {}
template <typename T>
DiagMessage& operator<<(const T& value) {
message_ << value;
return *this;
}
DiagMessageActual Build() const {
return DiagMessageActual{source_, message_.str()};
}
private:
Source source_;
std::stringstream message_;
};
template <>
inline DiagMessage& DiagMessage::operator<<(const ::std::u16string& value) {
message_ << android::StringPiece16(value);
return *this;
}
struct IDiagnostics {
virtual ~IDiagnostics() = default;
enum class Level { Note, Warn, Error };
virtual void Log(Level level, DiagMessageActual& actualMsg) = 0;
virtual void Error(const DiagMessage& message) {
DiagMessageActual actual = message.Build();
Log(Level::Error, actual);
}
virtual void Warn(const DiagMessage& message) {
DiagMessageActual actual = message.Build();
Log(Level::Warn, actual);
}
virtual void Note(const DiagMessage& message) {
DiagMessageActual actual = message.Build();
Log(Level::Note, actual);
}
};
class StdErrDiagnostics : public IDiagnostics {
public:
StdErrDiagnostics() = default;
void Log(Level level, DiagMessageActual& actual_msg) override {
const char* tag;
switch (level) {
case Level::Error:
num_errors_++;
if (num_errors_ > 20) {
return;
}
tag = "error";
break;
case Level::Warn:
tag = "warn";
break;
case Level::Note:
tag = "note";
break;
}
if (!actual_msg.source.path.empty()) {
std::cerr << actual_msg.source << ": ";
}
std::cerr << tag << ": " << actual_msg.message << "." << std::endl;
}
private:
size_t num_errors_ = 0;
DISALLOW_COPY_AND_ASSIGN(StdErrDiagnostics);
};
class SourcePathDiagnostics : public IDiagnostics {
public:
SourcePathDiagnostics(const Source& src, IDiagnostics* diag)
: source_(src), diag_(diag) {}
void Log(Level level, DiagMessageActual& actual_msg) override {
actual_msg.source.path = source_.path;
diag_->Log(level, actual_msg);
}
private:
Source source_;
IDiagnostics* diag_;
DISALLOW_COPY_AND_ASSIGN(SourcePathDiagnostics);
};
} // namespace aapt
#endif /* AAPT_DIAGNOSTICS_H */