gecko/layout/style/nsRuleData.cpp

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/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
2012-05-21 04:12:37 -07:00
/* 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/. */
#include "nsRuleData.h"
#include "mozilla/Poison.h"
#include <stdint.h>
inline size_t
nsRuleData::GetPoisonOffset()
{
// Fill in mValueOffsets such that mValueStorage + mValueOffsets[i]
// will yield the frame poison value for all uninitialized value
// offsets.
Bug 895322 - Part 1: Replace the usages of MOZ_STATIC_ASSERT with C++11 static_assert; r=Waldo This patch was mostly generated by running the following scripts on the codebase, with some manual changes made afterwards: # static_assert.sh #!/bin/bash # Command to convert an NSPR integer type to the equivalent standard integer type function convert() { echo "Converting $1 to $2..." find . ! -wholename "*nsprpub*" \ ! -wholename "*security/nss*" \ ! -wholename "*/.hg*" \ ! -wholename "obj-ff-dbg*" \ ! -name nsXPCOMCID.h \ ! -name prtypes.h \ -type f \ \( -iname "*.cpp" \ -o -iname "*.h" \ -o -iname "*.cc" \ -o -iname "*.mm" \) | \ xargs -n 1 `dirname $0`/assert_replacer.py #sed -i -e "s/\b$1\b/$2/g" } convert MOZ_STATIC_ASSERT static_assert hg rev --no-backup mfbt/Assertions.h \ media/webrtc/signaling/src/sipcc/core/includes/ccapi.h \ modules/libmar/src/mar_private.h \ modules/libmar/src/mar.h # assert_replacer.py #!/usr/bin/python import sys import re pattern = re.compile(r"\bMOZ_STATIC_ASSERT\b") def replaceInPlace(fname): print fname f = open(fname, "rw+") lines = f.readlines() for i in range(0, len(lines)): while True: index = re.search(pattern, lines[i]) if index != None: index = index.start() lines[i] = lines[i][0:index] + "static_assert" + lines[i][index+len("MOZ_STATIC_ASSERT"):] for j in range(i + 1, len(lines)): if lines[j].find(" ", index) == index: lines[j] = lines[j][0:index] + lines[j][index+4:] else: break else: break f.seek(0, 0) f.truncate() f.write("".join(lines)) f.close() argc = len(sys.argv) for i in range(1, argc): replaceInPlace(sys.argv[i]) --HG-- extra : rebase_source : 4b4a4047d82f2c205b9fad8d56dfc3f1afc0b045
2013-07-18 10:59:53 -07:00
static_assert(sizeof(uintptr_t) == sizeof(size_t),
"expect uintptr_t and size_t to be the same size");
static_assert(uintptr_t(-1) > uintptr_t(0),
"expect uintptr_t to be unsigned");
static_assert(size_t(-1) > size_t(0),
"expect size_t to be unsigned");
uintptr_t framePoisonValue = mozPoisonValue();
return size_t(framePoisonValue - uintptr_t(mValueStorage)) /
sizeof(nsCSSValue);
}
nsRuleData::nsRuleData(uint32_t aSIDs, nsCSSValue* aValueStorage,
nsPresContext* aContext, nsStyleContext* aStyleContext)
: mSIDs(aSIDs),
mCanStoreInRuleTree(true),
mPresContext(aContext),
mStyleContext(aStyleContext),
mValueStorage(aValueStorage)
{
#ifndef MOZ_VALGRIND
size_t framePoisonOffset = GetPoisonOffset();
for (size_t i = 0; i < nsStyleStructID_Length; ++i) {
mValueOffsets[i] = framePoisonOffset;
}
#endif
}
#ifdef DEBUG
nsRuleData::~nsRuleData()
{
#ifndef MOZ_VALGRIND
// assert nothing in mSIDs has poison value
size_t framePoisonOffset = GetPoisonOffset();
for (size_t i = 0; i < nsStyleStructID_Length; ++i) {
NS_ABORT_IF_FALSE(!(mSIDs & (1 << i)) ||
mValueOffsets[i] != framePoisonOffset,
"value in SIDs was left with poison offset");
}
#endif
}
#endif