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97 lines
2.5 KiB
97 lines
2.5 KiB
/*
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* Copyright 2019 The Android Open Source Project
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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#pragma once
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#include <initializer_list>
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#include <iostream>
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#include <sstream>
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#include <vector>
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#include "parse_location.h"
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class Loggable {
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public:
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virtual ~Loggable() = default;
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virtual std::string GetDebugName() const = 0;
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virtual ParseLocation GetLocation() const = 0;
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};
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class LogMessage {
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public:
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LogMessage(ParseLocation loc, std::initializer_list<const Loggable*> tokens)
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: debug_(false), loc_(loc), tokens_(tokens) {
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Init();
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}
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LogMessage(bool debug, std::initializer_list<const Loggable*> tokens) : debug_(debug), tokens_(tokens) {
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Init();
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}
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void Init() {
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if (loc_.GetLine() != -1) {
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stream_ << "\033[1mLine " << loc_.GetLine() << ": ";
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}
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if (!debug_) {
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stream_ << "\033[1;31m";
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stream_ << "ERROR: ";
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stream_ << "\033[0m";
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} else {
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stream_ << "\033[1;m";
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stream_ << "DEBUG: ";
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stream_ << "\033[0m";
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}
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}
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~LogMessage() {
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if (debug_ && suppress_debug_) return;
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std::cerr << stream_.str() << "\n";
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for (const auto& token : tokens_) {
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// Bold line number
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std::cerr << "\033[1m";
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std::cerr << " Line " << token->GetLocation().GetLine() << ": ";
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std::cerr << "\033[0m";
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std::cerr << token->GetDebugName() << "\n";
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}
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if (!debug_) {
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abort();
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}
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}
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std::ostream& stream() {
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return stream_;
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}
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private:
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std::ostringstream stream_;
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bool debug_;
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bool suppress_debug_{true};
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ParseLocation loc_;
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std::vector<const Loggable*> tokens_;
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};
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// Error Log stream. Aborts the program after the message is printed.
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// The arguments to the macro is a list of Loggable objects that are printed when the error is printed.
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#define ERROR(...) LogMessage(false, {__VA_ARGS__}).stream()
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// ParseLocation error log, the first argument is a location.
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#define ERRORLOC(_1, ...) LogMessage(_1, {__VA_ARGS__}).stream()
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#define DEBUG(...) LogMessage(true, {__VA_ARGS__}).stream()
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