gecko-dev/layout/style/nsRuleWalker.h
Ehsan Akhgari e368dc9c85 Bug 579517 - Part 1: Automated conversion of NSPR numeric types to stdint types in Gecko; r=bsmedberg
This patch was generated by a script.  Here's the source of the script for
future reference:

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 \
      \( -iname "*.cpp" \
         -o -iname "*.h" \
         -o -iname "*.c" \
         -o -iname "*.cc" \
         -o -iname "*.idl" \
         -o -iname "*.ipdl" \
         -o -iname "*.ipdlh" \
         -o -iname "*.mm" \) | \
    xargs -n 1 sed -i -e "s/\b$1\b/$2/g"
}

convert PRInt8 int8_t
convert PRUint8 uint8_t
convert PRInt16 int16_t
convert PRUint16 uint16_t
convert PRInt32 int32_t
convert PRUint32 uint32_t
convert PRInt64 int64_t
convert PRUint64 uint64_t

convert PRIntn int
convert PRUintn unsigned

convert PRSize size_t

convert PROffset32 int32_t
convert PROffset64 int64_t

convert PRPtrdiff ptrdiff_t

convert PRFloat64 double
2012-08-22 11:56:38 -04:00

102 lines
3.4 KiB
C++

/* -*- 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/. */
/*
* a class that walks the lexicographic tree of rule nodes as style
* rules are matched
*/
#ifndef nsRuleWalker_h_
#define nsRuleWalker_h_
#include "nsRuleNode.h"
#include "nsIStyleRule.h"
#include "StyleRule.h"
class nsRuleWalker {
public:
nsRuleNode* CurrentNode() { return mCurrent; }
void SetCurrentNode(nsRuleNode* aNode) {
NS_ASSERTION(aNode, "Must have node here!");
mCurrent = aNode;
}
protected:
void DoForward(nsIStyleRule* aRule) {
mCurrent = mCurrent->Transition(aRule, mLevel, mImportance);
NS_POSTCONDITION(mCurrent, "Transition messed up");
}
public:
void Forward(nsIStyleRule* aRule) {
NS_PRECONDITION(!nsRefPtr<mozilla::css::StyleRule>(do_QueryObject(aRule)),
"Calling the wrong Forward() overload");
DoForward(aRule);
}
void Forward(mozilla::css::StyleRule* aRule) {
DoForward(aRule);
mCheckForImportantRules =
mCheckForImportantRules && !aRule->GetImportantRule();
}
// ForwardOnPossiblyCSSRule should only be used by callers that have
// an explicit list of rules they need to walk, with the list
// already containing any important rules they care about.
void ForwardOnPossiblyCSSRule(nsIStyleRule* aRule) {
DoForward(aRule);
}
void Reset() { mCurrent = mRoot; }
bool AtRoot() { return mCurrent == mRoot; }
void SetLevel(uint8_t aLevel, bool aImportance,
bool aCheckForImportantRules) {
NS_ASSERTION(!aCheckForImportantRules || !aImportance,
"Shouldn't be checking for important rules while walking "
"important rules");
mLevel = aLevel;
mImportance = aImportance;
mCheckForImportantRules = aCheckForImportantRules;
}
uint8_t GetLevel() const { return mLevel; }
bool GetImportance() const { return mImportance; }
bool GetCheckForImportantRules() const { return mCheckForImportantRules; }
// We define the visited-relevant link to be the link that is the
// nearest self-or-ancestor to the node being matched.
enum VisitedHandlingType {
// Do rule matching as though all links are unvisited.
eRelevantLinkUnvisited,
// Do rule matching as though the relevant link is visited and all
// other links are unvisited.
eRelevantLinkVisited,
// Do rule matching as though a rule should match if it would match
// given any set of visitedness states. (used by users other than
// nsRuleWalker)
eLinksVisitedOrUnvisited
};
private:
nsRuleNode* mCurrent; // Our current position. Never null.
nsRuleNode* mRoot; // The root of the tree we're walking.
uint8_t mLevel; // an nsStyleSet::sheetType
bool mImportance;
bool mCheckForImportantRules; // If true, check for important rules as
// we walk and set to false if we find
// one.
public:
nsRuleWalker(nsRuleNode* aRoot)
: mCurrent(aRoot)
, mRoot(aRoot)
{
NS_ASSERTION(mCurrent, "Caller screwed up and gave us null node");
MOZ_COUNT_CTOR(nsRuleWalker);
}
~nsRuleWalker() { MOZ_COUNT_DTOR(nsRuleWalker); }
};
#endif /* !defined(nsRuleWalker_h_) */