gecko/layout/base/RestyleLogging.h

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/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
/* This Source Code Form is subject to the terms of the Mozilla Public
* License, v. 2.0. If a copy of the MPL was not distributed with this
* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
/**
* Macros used to log restyle events.
*/
#ifndef mozilla_RestyleLogging_h
#define mozilla_RestyleLogging_h
#include "mozilla/AutoRestore.h"
#ifdef DEBUG
#define RESTYLE_LOGGING
#endif
#ifdef RESTYLE_LOGGING
#define LOG_RESTYLE_VAR2(prefix_, suffix_) prefix_##suffix_
#define LOG_RESTYLE_VAR(prefix_, suffix_) LOG_RESTYLE_VAR2(prefix_, suffix_)
#define LOG_RESTYLE_DEPTH LOG_RESTYLE_VAR(restyle_depth_, __LINE__)
#define LOG_RESTYLE_IF(object_, cond_, message_, ...) \
PR_BEGIN_MACRO \
if (object_->ShouldLogRestyle() && (cond_)) { \
nsCString line; \
for (int32_t LOG_RESTYLE_VAR(rs_depth_, __LINE__) = 0; \
LOG_RESTYLE_VAR(rs_depth_, __LINE__) < object_->LoggingDepth(); \
LOG_RESTYLE_VAR(rs_depth_, __LINE__)++) { \
line.AppendLiteral(" "); \
} \
line.AppendPrintf(message_, ##__VA_ARGS__); \
printf_stderr("%s\n", line.get()); \
} \
PR_END_MACRO
#define LOG_RESTYLE(message_, ...) \
LOG_RESTYLE_IF(this, true, message_, ##__VA_ARGS__)
// Beware that LOG_RESTYLE_INDENT is two statements not wrapped in a block.
#define LOG_RESTYLE_INDENT() \
AutoRestore<int32_t> LOG_RESTYLE_VAR(ar_depth_, __LINE__)(LoggingDepth()); \
++LoggingDepth();
#else
#define LOG_RESTYLE_IF(cond_, message_, ...) /* nothing */
#define LOG_RESTYLE(message_, ...) /* nothing */
#define LOG_RESTYLE_INDENT() /* nothing */
#endif
#endif /* mozilla_RestyleLogging_h */