mozilla
/
pjs
зеркало из https://github.com/mozilla/pjs.git
1
0
Форкнуть 0
Код Задачи Пакеты Проекты Релизы Вики Активность

improved DTD context for better style/structure handling

This commit is contained in:
rickg%netscape.com 1998-09-11 00:54:36 +00:00
Родитель ebb32eddb3
Коммит fa185d94e6
12 изменённых файлов: 740 добавлений и 514 удалений
Показать статистику Скачать Patch файл Скачать Diff файл Показать все файлы Свернуть все файлы

284
htmlparser/src/CNavDTD.cpp
Просмотреть файл

@ -32,7 +32,7 @@
#include "prtypes.h" //this is here for debug reasons...
#include "prio.h"
#include "plstr.h"
#include "nsDTDUtils.h"
#ifdef XP_PC
#include <direct.h> //this is here for debug reasons...
#endif
@ -91,119 +91,6 @@ static eHTMLTags gWhitespaceTags[]={
eHTMLTag_newline, eHTMLTag_whitespace};
/************************************************************************
CTagStack class implementation.
The reason we use this class is so that we can view the stack state
in the usual way via the debugger.
************************************************************************/
CTagStack::CTagStack(int aDefaultSize) {
#ifdef _dynstack
mSize=aDefaultSize;
mTags =new eHTMLTags[mSize];
mBits =new PRBool[mSize];
#else
mSize=eStackSize;
#endif
mCount=0;
mPrevious=0;
nsCRT::zero(mTags,mSize*sizeof(eHTMLTags));
nsCRT::zero(mBits,mSize*sizeof(PRBool));
}
/**
* Default constructor
* @update gess7/9/98
* @param aDefaultsize tells the stack what size to start out.
* however, we'll autosize as needed.
*/
CTagStack::~CTagStack() {
#ifdef _dynstack
delete mTags;
delete mBits;
mTags=0;
mBits=0;
#endif
mSize=mCount=0;
}
/**
* Resets state of stack to be empty.
* @update gess7/9/98
*/
void CTagStack::Empty(void) {
mCount=0;
}
/**
*
* @update gess7/9/98
* @param
* @return
*/
void CTagStack::Push(eHTMLTags aTag) {
if(mCount>=mSize) {
#ifdef _dynstack
eHTMLTags* tmp=new eHTMLTags[2*mSize];
nsCRT::zero(tmp,2*mSize*sizeof(eHTMLTag_html));
nsCRT::memcpy(tmp,mTags,mSize*sizeof(eHTMLTag_html));
delete mTags;
mTags=tmp;
PRBool* tmp2=new PRBool[2*mSize];
nsCRT::zero(tmp2,2*mSize*sizeof(PRBool));
nsCRT::memcpy(tmp2,mBits,mSize*sizeof(PRBool));
delete mBits;
mBits=tmp2;
mSize*=2;
#endif
}
mTags[mCount++]=aTag;
}
/**
*
* @update gess7/9/98
* @param
* @return
*/
eHTMLTags CTagStack::Pop() {
eHTMLTags result=eHTMLTag_unknown;
if(mCount>0) {
result=mTags[--mCount];
mTags[mCount]=eHTMLTag_unknown;
mBits[mCount]=PR_FALSE;
}
return result;
}
/**
*
* @update gess7/9/98
* @param
* @return
*/
eHTMLTags CTagStack::First() const {
if(mCount>0)
return mTags[0];
return eHTMLTag_unknown;
}
/**
*
* @update gess7/9/98
* @param
* @return
*/
eHTMLTags CTagStack::Last() const {
if(mCount>0)
return mTags[mCount-1];
return eHTMLTag_unknown;
}
/**************************************************************
Now define the token deallocator class...
**************************************************************/
@ -460,18 +347,21 @@ void CNavDTD::InitializeDefaultTokenHandlers() {
* @param
* @return
*/
CNavDTD::CNavDTD() : nsIDTD(), mContextStack(), mTokenDeque(gTokenKiller) {
CNavDTD::CNavDTD() : nsIDTD(), mTokenDeque(gTokenKiller) {
NS_INIT_REFCNT();
mParser=0;
mSink = nsnull;
mDTDDebug=0;
mLineNumber=1;
mParseMode=eParseMode_navigator;
mStyleStack=new CTagStack();
nsCRT::zero(mTokenHandlers,sizeof(mTokenHandlers));
mHasOpenForm=PR_FALSE;
mHasOpenMap=PR_FALSE;
InitializeDefaultTokenHandlers();
mHeadContext=new nsDTDContext();
mBodyContext=new nsDTDContext();
mFormContext=0;
mMapContext=0;
}
/**
@ -483,9 +373,9 @@ CNavDTD::CNavDTD() : nsIDTD(), mContextStack(), mTokenDeque(gTokenKiller) {
*/
CNavDTD::~CNavDTD(){
DeleteTokenHandlers();
delete mStyleStack;
delete mHeadContext;
delete mBodyContext;
NS_IF_RELEASE(mDTDDebug);
}
/**
@ -530,39 +420,13 @@ PRBool CNavDTD::Verify(nsString& aURLRef){
else mDTDDebug->SetVerificationDirectory(kVerificationDir);
}
if(mDTDDebug) {
mDTDDebug->Verify(this,mParser,mContextStack.mCount,mContextStack.mTags,aURLRef);
mDTDDebug->Verify(this,mParser,
mBodyContext->mElements.mCount,
mBodyContext->mElements.mTags,aURLRef);
}
return result;
}
/**
* This method adds a new parser context to the list,
* pushing the current one to the next position.
* @update gess7/22/98
* @param ptr to new context
* @return nada
*/
void CNavDTD::PushStack(CTagStack& aStack) {
aStack.mPrevious=mStyleStack;
mStyleStack=&aStack;
}
/**
* This method pops the topmost context off the stack,
* returning it to the user. The next context (if any)
* becomes the current context.
* @update gess7/22/98
* @return prev. context
*/
CTagStack* CNavDTD::PopStack() {
CTagStack* oldStack=mStyleStack;
if(oldStack) {
mStyleStack=oldStack->mPrevious;
}
return oldStack;
}
/**
* This method is called to determine if the given DTD can parse
* a document in a given source-type.
@ -618,7 +482,7 @@ nsresult CNavDTD::WillBuildModel(nsString& aFilename,PRBool aNotifySink){
nsresult CNavDTD::DidBuildModel(PRInt32 anErrorCode,PRBool aNotifySink){
nsresult result= NS_OK;
if((kNoError==anErrorCode) && (mContextStack.mCount>0)) {
if((kNoError==anErrorCode) && (mBodyContext->mElements.mCount>0)) {
result = CloseContainersTo(0,eHTMLTag_unknown,PR_FALSE);
}
@ -655,7 +519,7 @@ nsresult CNavDTD::HandleToken(CToken* aToken){
if(theHandler) {
result=(*theHandler)(theToken,this);
if (mDTDDebug)
mDTDDebug->Verify(this, mParser, mContextStack.mCount, mContextStack.mTags, mFilename);
mDTDDebug->Verify(this, mParser, mBodyContext->mElements.mCount, mBodyContext->mElements.mTags, mFilename);
}
}//if
@ -681,7 +545,7 @@ nsresult CNavDTD::HandleToken(CToken* aToken){
nsresult CNavDTD::HandleDefaultStartToken(CToken* aToken,eHTMLTags aChildTag,nsIParserNode& aNode) {
NS_PRECONDITION(0!=aToken,kNullToken);
eHTMLTags theParentTag=mContextStack.Last();
eHTMLTags theParentTag=mBodyContext->mElements.Last();
nsresult result=NS_OK;
PRBool contains=CanContain(theParentTag,aChildTag);
@ -694,7 +558,7 @@ nsresult CNavDTD::HandleDefaultStartToken(CToken* aToken,eHTMLTags aChildTag,nsI
//You must determine what container hierarchy you need to hold aToken,
//and create that on the parsestack.
result=ReduceContextStackFor(aChildTag);
if(PR_FALSE==CanContain(mContextStack.Last(),aChildTag)) {
if(PR_FALSE==CanContain(mBodyContext->mElements.Last(),aChildTag)) {
//we unwound too far; now we have to recreate a valid context stack.
result=CreateContextStackFor(aChildTag);
}
@ -702,13 +566,13 @@ nsresult CNavDTD::HandleDefaultStartToken(CToken* aToken,eHTMLTags aChildTag,nsI
}
if(IsContainer(aChildTag)){
if(PR_TRUE==mContextStack.mBits[mContextStack.mCount-1]) {
if(PR_TRUE==mBodyContext->mElements.mBits[mBodyContext->mElements.mCount-1]) {
CloseTransientStyles(aChildTag);
}
result=OpenContainer(aNode,PR_TRUE);
}
else {
if(PR_FALSE==mContextStack.mBits[mContextStack.mCount-1]) {
if(PR_FALSE==mBodyContext->mElements.mBits[mBodyContext->mElements.mCount-1]) {
OpenTransientStyles(aChildTag);
}
result=AddLeaf(aNode);
@ -741,7 +605,7 @@ nsresult CNavDTD::HandleStartToken(CToken* aToken) {
if(NS_OK==result) {
//now check to see if this token should be omitted...
if(PR_FALSE==CanOmit(mContextStack.Last(),tokenTagType)) {
if(PR_FALSE==CanOmit(mBodyContext->mElements.Last(),tokenTagType)) {
switch(tokenTagType) {
@ -836,7 +700,7 @@ nsresult CNavDTD::HandleEndToken(CToken* aToken) {
//now check to see if this token should be omitted, or
//if it's gated from closing by the presence of another tag.
if(PR_TRUE==CanOmitEndTag(mContextStack.Last(),tokenTagType)) {
if(PR_TRUE==CanOmitEndTag(mBodyContext->mElements.Last(),tokenTagType)) {
UpdateStyleStackForCloseTag(tokenTagType,tokenTagType);
return result;
}
@ -867,7 +731,7 @@ nsresult CNavDTD::HandleEndToken(CToken* aToken) {
// Empty the transient style stack (we just closed any extra
// ones off so it's safe to do it now) because they don't carry
// forward across table cell boundaries.
mStyleStack->mCount=0;
mBodyContext->mStyles->mCount=0;
break;
default:
@ -894,7 +758,7 @@ nsresult CNavDTD::HandleEntityToken(CToken* aToken) {
CEntityToken* et = (CEntityToken*)(aToken);
nsresult result=NS_OK;
if(PR_FALSE==CanOmit(mContextStack.Last(),eHTMLTag_entity)) {
if(PR_FALSE==CanOmit(mBodyContext->mElements.Last(),eHTMLTag_entity)) {
nsCParserNode aNode((CHTMLToken*)aToken,mLineNumber);
result=AddLeaf(aNode);
}
@ -1802,7 +1666,7 @@ PRBool CNavDTD::CanOmitEndTag(eHTMLTags aParent,eHTMLTags aChild) const {
default:
if(IsGatedFromClosing(aChild))
result=PR_TRUE;
else if(IsCompatibleTag(aChild,mContextStack.Last()))
else if(IsCompatibleTag(aChild,mBodyContext->mElements.Last()))
result=PR_FALSE;
else result=(!HasOpenContainer(aChild));
break;
@ -1916,7 +1780,7 @@ eHTMLTags CNavDTD::GetDefaultParentTagFor(eHTMLTags aChildTag) const{
* @param aChild -- tag type of child
* @return TRUE if propagation closes; false otherwise
*/
PRBool CNavDTD::ForwardPropagate(CTagStack& aStack,eHTMLTags aParentTag,eHTMLTags aChildTag) {
PRBool CNavDTD::ForwardPropagate(nsTagStack& aStack,eHTMLTags aParentTag,eHTMLTags aChildTag) {
PRBool result=PR_FALSE;
switch(aParentTag) {
@ -1959,7 +1823,7 @@ PRBool CNavDTD::ForwardPropagate(CTagStack& aStack,eHTMLTags aParentTag,eHTMLTag
* @param aChild -- tag type of child
* @return TRUE if propagation closes; false otherwise
*/
PRBool CNavDTD::BackwardPropagate(CTagStack& aStack,eHTMLTags aParentTag,eHTMLTags aChildTag) const {
PRBool CNavDTD::BackwardPropagate(nsTagStack& aStack,eHTMLTags aParentTag,eHTMLTags aChildTag) const {
eHTMLTags theParentTag=aChildTag;
@ -2055,12 +1919,12 @@ PRBool CNavDTD::IsGatedFromClosing(eHTMLTags aChildTag) const {
***************************************************************************/
int theIndex;
int theTopIndex=mContextStack.mCount-1;
int theTopIndex=mBodyContext->mElements.mCount-1;
eHTMLTags theParent=GetDefaultParentTagFor(aChildTag);
while(eHTMLTag_unknown!=theParent) {
for(theIndex=theTopIndex;theIndex>tagPos;theIndex--){
if(mContextStack.mTags[theIndex]==theParent){
if(mBodyContext->mElements.mTags[theIndex]==theParent){
theGatePos=theIndex;
break;
}
@ -2088,7 +1952,7 @@ PRBool CNavDTD::IsGatedFromClosing(eHTMLTags aChildTag) const {
* @return tag id of topmost node in contextstack
*/
eHTMLTags CNavDTD::GetTopNode() const {
return mContextStack.Last();
return mBodyContext->mElements.Last();
}
/**
@ -2101,8 +1965,8 @@ eHTMLTags CNavDTD::GetTopNode() const {
*/
PRInt32 CNavDTD::GetTopmostIndexOf(eHTMLTags aTagSet[],PRInt32 aCount) const {
int i=0;
for(i=mContextStack.mCount-1;i>=0;i--){
if(FindTagInSet(mContextStack.mTags[i],aTagSet,aCount)) {
for(i=mBodyContext->mElements.mCount-1;i>=0;i--){
if(FindTagInSet(mBodyContext->mElements.mTags[i],aTagSet,aCount)) {
return i;
}
}
@ -2119,8 +1983,8 @@ PRInt32 CNavDTD::GetTopmostIndexOf(eHTMLTags aTagSet[],PRInt32 aCount) const {
*/
PRInt32 CNavDTD::GetTopmostIndexOf(eHTMLTags aTag) const {
int i=0;
for(i=mContextStack.mCount-1;i>=0;i--){
if(mContextStack.mTags[i]==aTag)
for(i=mBodyContext->mElements.mCount-1;i>=0;i--){
if(mBodyContext->mElements.mTags[i]==aTag)
return i;
}
return kNotFound;
@ -2149,10 +2013,10 @@ nsresult CNavDTD::OpenTransientStyles(eHTMLTags aTag){
if(!FindTagInSet(aTag,gWhitespaceTags,sizeof(gWhitespaceTags)/sizeof(eHTMLTag_unknown))) {
PRInt32 pos=0;
eHTMLTags parentTag=mContextStack.Last();
eHTMLTags parentTag=mBodyContext->mElements.Last();
if(CanContainStyles(parentTag)) {
for(pos=0;pos<mStyleStack->mCount;pos++) {
eHTMLTags theTag=mStyleStack->mTags[pos];
for(pos=0;pos<mBodyContext->mStyles->mCount;pos++) {
eHTMLTags theTag=mBodyContext->mStyles->mTags[pos];
if(PR_FALSE==HasOpenContainer(theTag)) {
CStartToken token(theTag);
@ -2166,7 +2030,7 @@ nsresult CNavDTD::OpenTransientStyles(eHTMLTags aTag){
default:
token.SetTypeID(theTag); //open the html container...
result=OpenContainer(theNode,PR_FALSE);
mContextStack.mBits[mContextStack.mCount-1]=PR_TRUE;
mBodyContext->mElements.mBits[mBodyContext->mElements.mCount-1]=PR_TRUE;
} //switch
}
if(NS_OK!=result)
@ -2192,10 +2056,10 @@ nsresult CNavDTD::OpenTransientStyles(eHTMLTags aTag){
nsresult CNavDTD::CloseTransientStyles(eHTMLTags aTag){
nsresult result=NS_OK;
if((mStyleStack->mCount>0) && (mContextStack.mBits[mContextStack.mCount-1])) {
if((mBodyContext->mStyles->mCount>0) && (mBodyContext->mElements.mBits[mBodyContext->mElements.mCount-1])) {
if(!FindTagInSet(aTag,gWhitespaceTags,sizeof(gWhitespaceTags)/sizeof(eHTMLTag_unknown))) {
result=CloseContainersTo(mStyleStack->mTags[0],PR_FALSE);
mContextStack.mBits[mContextStack.mCount-1]=PR_FALSE;
result=CloseContainersTo(mBodyContext->mStyles->mTags[0],PR_FALSE);
mBodyContext->mElements.mBits[mBodyContext->mElements.mCount-1]=PR_FALSE;
}//if
}//if
@ -2211,10 +2075,10 @@ nsresult CNavDTD::CloseTransientStyles(eHTMLTags aTag){
* @param aNode -- next node to be added to model
*/
nsresult CNavDTD::OpenHTML(const nsIParserNode& aNode){
NS_PRECONDITION(mContextStack.mCount >= 0, kInvalidTagStackPos);
NS_PRECONDITION(mBodyContext->mElements.mCount >= 0, kInvalidTagStackPos);
nsresult result=mSink->OpenHTML(aNode);
mContextStack.Push((eHTMLTags)aNode.GetNodeType());
mBodyContext->mElements.Push((eHTMLTags)aNode.GetNodeType());
return result;
}
@ -2228,9 +2092,9 @@ nsresult CNavDTD::OpenHTML(const nsIParserNode& aNode){
* @return TRUE if ok, FALSE if error
*/
nsresult CNavDTD::CloseHTML(const nsIParserNode& aNode){
NS_PRECONDITION(mContextStack.mCount > 0, kInvalidTagStackPos);
NS_PRECONDITION(mBodyContext->mElements.mCount > 0, kInvalidTagStackPos);
nsresult result=mSink->CloseHTML(aNode);
mContextStack.Pop();
mBodyContext->mElements.Pop();
return result;
}
@ -2244,7 +2108,7 @@ nsresult CNavDTD::CloseHTML(const nsIParserNode& aNode){
* @return TRUE if ok, FALSE if error
*/
nsresult CNavDTD::OpenHead(const nsIParserNode& aNode){
mContextStack.Push(eHTMLTag_head);
mBodyContext->mElements.Push(eHTMLTag_head);
nsresult result=mSink->OpenHead(aNode);
return result;
}
@ -2259,7 +2123,7 @@ nsresult CNavDTD::OpenHead(const nsIParserNode& aNode){
*/
nsresult CNavDTD::CloseHead(const nsIParserNode& aNode){
nsresult result=mSink->CloseHead(aNode);
mContextStack.Pop();
mBodyContext->mElements.Pop();
return result;
}
@ -2272,10 +2136,10 @@ nsresult CNavDTD::CloseHead(const nsIParserNode& aNode){
* @return TRUE if ok, FALSE if error
*/
nsresult CNavDTD::OpenBody(const nsIParserNode& aNode){
NS_PRECONDITION(mContextStack.mCount >= 0, kInvalidTagStackPos);
NS_PRECONDITION(mBodyContext->mElements.mCount >= 0, kInvalidTagStackPos);
nsresult result=NS_OK;
eHTMLTags topTag=mContextStack.Last();
eHTMLTags topTag=mBodyContext->mElements.Last();
if(eHTMLTag_html!=topTag) {
@ -2302,7 +2166,7 @@ nsresult CNavDTD::OpenBody(const nsIParserNode& aNode){
if(NS_OK==result) {
result=mSink->OpenBody(aNode);
mContextStack.Push((eHTMLTags)aNode.GetNodeType());
mBodyContext->mElements.Push((eHTMLTags)aNode.GetNodeType());
}
return result;
}
@ -2316,9 +2180,9 @@ nsresult CNavDTD::OpenBody(const nsIParserNode& aNode){
* @return TRUE if ok, FALSE if error
*/
nsresult CNavDTD::CloseBody(const nsIParserNode& aNode){
NS_PRECONDITION(mContextStack.mCount >= 0, kInvalidTagStackPos);
NS_PRECONDITION(mBodyContext->mElements.mCount >= 0, kInvalidTagStackPos);
nsresult result=mSink->CloseBody(aNode);
mContextStack.Pop();
mBodyContext->mElements.Pop();
return result;
}
@ -2399,9 +2263,9 @@ nsresult CNavDTD::CloseMap(const nsIParserNode& aNode){
* @return TRUE if ok, FALSE if error
*/
nsresult CNavDTD::OpenFrameset(const nsIParserNode& aNode){
NS_PRECONDITION(mContextStack.mCount >= 0, kInvalidTagStackPos);
NS_PRECONDITION(mBodyContext->mElements.mCount >= 0, kInvalidTagStackPos);
nsresult result=mSink->OpenFrameset(aNode);
mContextStack.Push((eHTMLTags)aNode.GetNodeType());
mBodyContext->mElements.Push((eHTMLTags)aNode.GetNodeType());
return result;
}
@ -2414,9 +2278,9 @@ nsresult CNavDTD::OpenFrameset(const nsIParserNode& aNode){
* @return TRUE if ok, FALSE if error
*/
nsresult CNavDTD::CloseFrameset(const nsIParserNode& aNode){
NS_PRECONDITION(mContextStack.mCount > 0, kInvalidTagStackPos);
NS_PRECONDITION(mBodyContext->mElements.mCount > 0, kInvalidTagStackPos);
nsresult result=mSink->CloseFrameset(aNode);
mContextStack.Pop();
mBodyContext->mElements.Pop();
return result;
}
@ -2431,7 +2295,7 @@ nsresult CNavDTD::CloseFrameset(const nsIParserNode& aNode){
*/
nsresult
CNavDTD::OpenContainer(const nsIParserNode& aNode,PRBool aUpdateStyleStack){
NS_PRECONDITION(mContextStack.mCount >= 0, kInvalidTagStackPos);
NS_PRECONDITION(mBodyContext->mElements.mCount >= 0, kInvalidTagStackPos);
nsresult result=NS_OK;
eHTMLTags nodeType=(eHTMLTags)aNode.GetNodeType();
@ -2474,7 +2338,7 @@ CNavDTD::OpenContainer(const nsIParserNode& aNode,PRBool aUpdateStyleStack){
default:
result=mSink->OpenContainer(aNode);
mContextStack.Push((eHTMLTags)aNode.GetNodeType());
mBodyContext->mElements.Push((eHTMLTags)aNode.GetNodeType());
break;
}
@ -2496,7 +2360,7 @@ CNavDTD::OpenContainer(const nsIParserNode& aNode,PRBool aUpdateStyleStack){
nsresult
CNavDTD::CloseContainer(const nsIParserNode& aNode,eHTMLTags aTag,
PRBool aUpdateStyles){
NS_PRECONDITION(mContextStack.mCount > 0, kInvalidTagStackPos);
NS_PRECONDITION(mBodyContext->mElements.mCount > 0, kInvalidTagStackPos);
nsresult result=NS_OK;
eHTMLTags nodeType=(eHTMLTags)aNode.GetNodeType();
@ -2528,11 +2392,11 @@ CNavDTD::CloseContainer(const nsIParserNode& aNode,eHTMLTags aTag,
case eHTMLTag_title:
default:
result=mSink->CloseContainer(aNode);
mContextStack.Pop();
mBodyContext->mElements.Pop();
break;
}
mContextStack.mBits[mContextStack.mCount]=PR_FALSE;
mBodyContext->mElements.mBits[mBodyContext->mElements.mCount]=PR_FALSE;
if((NS_OK==result) && (PR_TRUE==aUpdateStyles)){
UpdateStyleStackForCloseTag(nodeType,aTag);
}
@ -2551,15 +2415,15 @@ CNavDTD::CloseContainer(const nsIParserNode& aNode,eHTMLTags aTag,
nsresult
CNavDTD::CloseContainersTo(PRInt32 anIndex,eHTMLTags aTag,
PRBool aUpdateStyles){
NS_PRECONDITION(mContextStack.mCount > 0, kInvalidTagStackPos);
NS_PRECONDITION(mBodyContext->mElements.mCount > 0, kInvalidTagStackPos);
nsresult result=NS_OK;
static CEndToken aToken(gEmpty);
nsCParserNode theNode(&aToken,mLineNumber);
if((anIndex<mContextStack.mCount) && (anIndex>=0)) {
while(mContextStack.mCount>anIndex) {
eHTMLTags theTag=mContextStack.Last();
if((anIndex<mBodyContext->mElements.mCount) && (anIndex>=0)) {
while(mBodyContext->mElements.mCount>anIndex) {
eHTMLTags theTag=mBodyContext->mElements.Last();
aToken.SetTypeID(theTag);
result=CloseContainer(theNode,aTag,aUpdateStyles);
}
@ -2576,7 +2440,7 @@ CNavDTD::CloseContainersTo(PRInt32 anIndex,eHTMLTags aTag,
* @return TRUE if ok, FALSE if error
*/
nsresult CNavDTD::CloseContainersTo(eHTMLTags aTag,PRBool aUpdateStyles){
NS_PRECONDITION(mContextStack.mCount > 0, kInvalidTagStackPos);
NS_PRECONDITION(mBodyContext->mElements.mCount > 0, kInvalidTagStackPos);
PRInt32 pos=GetTopmostIndexOf(aTag);
@ -2585,7 +2449,7 @@ nsresult CNavDTD::CloseContainersTo(eHTMLTags aTag,PRBool aUpdateStyles){
return CloseContainersTo(pos,aTag,aUpdateStyles);
}
eHTMLTags theTopTag=mContextStack.Last();
eHTMLTags theTopTag=mBodyContext->mElements.Last();
if(IsCompatibleTag(aTag,theTopTag)) {
//if you're here, it's because we're trying to close one style tag,
//but a different one is actually open. Because this is NAV4x
@ -2617,10 +2481,10 @@ nsresult CNavDTD::CloseContainersTo(eHTMLTags aTag,PRBool aUpdateStyles){
* @return TRUE if ok, FALSE if error
*/
nsresult CNavDTD::CloseTopmostContainer(){
NS_PRECONDITION(mContextStack.mCount > 0, kInvalidTagStackPos);
NS_PRECONDITION(mBodyContext->mElements.mCount > 0, kInvalidTagStackPos);
CEndToken aToken(gEmpty);
eHTMLTags theTag=mContextStack.Last();
eHTMLTags theTag=mBodyContext->mElements.Last();
aToken.SetTypeID(theTag);
nsCParserNode theNode(&aToken,mLineNumber);
return CloseContainer(theNode,theTag,PR_TRUE);
@ -2639,7 +2503,7 @@ nsresult CNavDTD::AddLeaf(const nsIParserNode& aNode){
return result;
}
CTagStack kPropagationStack;
static nsTagStack kPropagationStack;
/**
* This method gets called to create a valid context stack
@ -2658,7 +2522,7 @@ nsresult CNavDTD::CreateContextStackFor(eHTMLTags aChildTag){
nsresult result=(nsresult)kContextMismatch;
PRInt32 cnt=0;
eHTMLTags theTop=mContextStack.Last();
eHTMLTags theTop=mBodyContext->mElements.Last();
PRBool bResult=ForwardPropagate(kPropagationStack,theTop,aChildTag);
if(PR_FALSE==bResult){
@ -2694,7 +2558,7 @@ nsresult CNavDTD::CreateContextStackFor(eHTMLTags aChildTag){
else bResult=BackwardPropagate(kPropagationStack,eHTMLTag_html,aChildTag);
} //elseif
if((0==mContextStack.mCount) || (mContextStack.Last()==kPropagationStack.Pop()))
if((0==mBodyContext->mElements.mCount) || (mBodyContext->mElements.Last()==kPropagationStack.Pop()))
result=NS_OK;
//now, build up the stack according to the tags
@ -2725,13 +2589,13 @@ nsresult CNavDTD::CreateContextStackFor(eHTMLTags aChildTag){
*/
nsresult CNavDTD::ReduceContextStackFor(eHTMLTags aChildTag){
nsresult result=NS_OK;
eHTMLTags topTag=mContextStack.Last();
eHTMLTags topTag=mBodyContext->mElements.Last();
while( (topTag!=kNotFound) &&
(PR_FALSE==CanContain(topTag,aChildTag)) &&
(PR_FALSE==CanContainIndirect(topTag,aChildTag))) {
CloseTopmostContainer();
topTag=mContextStack.Last();
topTag=mBodyContext->mElements.Last();
}
return result;
}
@ -2750,7 +2614,7 @@ CNavDTD::UpdateStyleStackForOpenTag(eHTMLTags aTag,eHTMLTags anActualTag){
nsresult result=0;
if(FindTagInSet(aTag,gStyleTags,sizeof(gStyleTags)/sizeof(eHTMLTag_unknown))) {
mStyleStack->Push(aTag);
mBodyContext->mStyles->Push(aTag);
}
else {
switch (aTag) {
@ -2779,10 +2643,10 @@ nsresult
CNavDTD::UpdateStyleStackForCloseTag(eHTMLTags aTag,eHTMLTags anActualTag){
nsresult result=0;
if(mStyleStack->mCount>0) {
if(mBodyContext->mStyles->mCount>0) {
if(FindTagInSet(aTag,gStyleTags,sizeof(gStyleTags)/sizeof(eHTMLTag_unknown))) {
if(aTag==anActualTag)
mStyleStack->Pop();
mBodyContext->mStyles->Pop();
}
else {
switch (aTag) {

56
htmlparser/src/CNavDTD.h
Просмотреть файл

@ -86,6 +86,7 @@
#include "nsVoidArray.h"
#include "nsDeque.h"
#define NS_INAVHTML_DTD_IID \
{0x5c5cce40, 0xcfd6, 0x11d1, \
{0xaa, 0xda, 0x00, 0x80, 0x5f, 0x8a, 0x3e, 0x14}}
@ -97,49 +98,10 @@ class nsIParserNode;
class nsCParserNode;
class CITokenHandler;
class nsParser;
class nsDTDContext;
class nsTagStack;
/***************************************************************
Before digging into the NavDTD, we'll define a helper
class called CTagStack.
Simply put, we've built ourselves a little data structure that
serves as a stack for htmltags (and associated bits).
What's special is that if you #define _dynstack 1, the stack
size can grow dynamically (like you'ld want in a release build.)
If you don't #define _dynstack 1, then the stack is a fixed size,
equal to the eStackSize enum. This makes debugging easier, because
you can see the htmltags on the stack if its not dynamic.
***************************************************************/
//#define _dynstack 1
CLASS_EXPORT_HTMLPARS CTagStack {
enum {eStackSize=200};
public:
CTagStack(int aDefaultSize=50);
~CTagStack();
void Push(eHTMLTags aTag);
eHTMLTags Pop();
eHTMLTags First() const;
eHTMLTags Last() const;
void Empty(void);
int mSize;
int mCount;
#ifdef _dynstack
eHTMLTags* mTags;
PRBool* mBits;
#else
eHTMLTags mTags[200];
PRBool mBits[200];
CTagStack* mPrevious;
#endif
};
/***************************************************************
Now the main event: CNavDTD.
@ -381,7 +343,7 @@ CLASS_EXPORT_HTMLPARS CNavDTD : public nsIDTD {
* @param aChild -- tag type of child
* @return True if closure was achieved -- other false
*/
virtual PRBool ForwardPropagate(CTagStack& aTagStack,eHTMLTags aParentTag,eHTMLTags aChildTag);
virtual PRBool ForwardPropagate(nsTagStack& aTagStack,eHTMLTags aParentTag,eHTMLTags aChildTag);
/**
* This method tries to design a context map (without actually
@ -392,7 +354,7 @@ CLASS_EXPORT_HTMLPARS CNavDTD : public nsIDTD {
* @param aChild -- tag type of child
* @return True if closure was achieved -- other false
*/
virtual PRBool BackwardPropagate(CTagStack& aTagStack,eHTMLTags aParentTag,eHTMLTags aChildTag) const;
virtual PRBool BackwardPropagate(nsTagStack& aTagStack,eHTMLTags aParentTag,eHTMLTags aChildTag) const;
/**
* Ask parser if a given container is open ANYWHERE on stack
@ -601,8 +563,6 @@ protected:
protected:
void PushStack(CTagStack& aStack);
CTagStack* PopStack();
PRInt32 CollectAttributes(nsCParserNode& aNode,PRInt32 aCount);
PRInt32 CollectSkippedContent(nsCParserNode& aNode,PRInt32& aCount);
@ -612,8 +572,10 @@ protected:
CITokenHandler* mTokenHandlers[eToken_last];
CTagStack mContextStack;
CTagStack* mStyleStack;
nsDTDContext* mHeadContext;
nsDTDContext* mBodyContext;
nsDTDContext* mFormContext;
nsDTDContext* mMapContext;
PRBool mHasOpenForm;
PRBool mHasOpenMap;

2
htmlparser/src/Makefile
Просмотреть файл

@ -28,6 +28,8 @@ CPPSRCS = \
nsScanner.cpp \
nsToken.cpp \
nsTokenHandler.cpp \
nsNavDTD.cpp \
nsDTDUtils.cpp \
CNavDTD.cpp \
COtherDTD.cpp \
CRtfDTD.cpp \

2
htmlparser/src/makefile.win
Просмотреть файл

@ -24,6 +24,7 @@ MODULE=raptor
REQUIRES=xpcom raptor netlib
CPPSRCS= \
nsDTDUtils.cpp \
CNavDTD.cpp \
COtherDTD.cpp \
CRtfDTD.cpp \
@ -47,6 +48,7 @@ CPPSRCS= \
$(NULL)
CPP_OBJS= \
.\$(OBJDIR)\nsDTDUtils.obj \
.\$(OBJDIR)\CNavDTD.obj \
.\$(OBJDIR)\COtherDTD.obj \
.\$(OBJDIR)\CRtfDTD.obj \

187
htmlparser/src/nsDTDUtils.cpp Normal file
Просмотреть файл

@ -0,0 +1,187 @@
/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
/*
* The contents of this file are subject to the Netscape Public License
* Version 1.0 (the "NPL"); you may not use this file except in
* compliance with the NPL. You may obtain a copy of the NPL at
* http://www.mozilla.org/NPL/
*
* Software distributed under the NPL is distributed on an "AS IS" basis,
* WITHOUT WARRANTY OF ANY KIND, either express or implied. See the NPL
* for the specific language governing rights and limitations under the
* NPL.
*
* The Initial Developer of this code under the NPL is Netscape
* Communications Corporation. Portions created by Netscape are
* Copyright (C) 1998 Netscape Communications Corporation. All Rights
* Reserved.
*/
#include "nsDTDUtils.h"
/***************************************************************
First, define the tagstack class
***************************************************************/
/**
* Default constructor
* @update gess9/10/98
*/
nsTagStack::nsTagStack(int aDefaultSize) {
#ifdef _dynstack
mSize=aDefaultSize;
mTags =new eHTMLTags[mSize];
mBits =new PRBool[mSize];
#else
mSize=eStackSize;
#endif
mCount=0;
mPrevious=0;
nsCRT::zero(mTags,mSize*sizeof(eHTMLTags));
nsCRT::zero(mBits,mSize*sizeof(PRBool));
}
/**
* Default destructor
* @update gess7/9/98
*/
nsTagStack::~nsTagStack() {
#ifdef _dynstack
delete mTags;
delete mBits;
mTags=0;
mBits=0;
#endif
mSize=mCount=0;
}
/**
* Resets state of stack to be empty.
* @update gess7/9/98
*/
void nsTagStack::Empty(void) {
mCount=0;
}
/**
*
* @update gess7/9/98
*/
void nsTagStack::Push(eHTMLTags aTag) {
if(mCount>=mSize) {
#ifdef _dynstack
eHTMLTags* tmp=new eHTMLTags[2*mSize];
nsCRT::zero(tmp,2*mSize*sizeof(eHTMLTag_html));
nsCRT::memcpy(tmp,mTags,mSize*sizeof(eHTMLTag_html));
delete mTags;
mTags=tmp;
PRBool* tmp2=new PRBool[2*mSize];
nsCRT::zero(tmp2,2*mSize*sizeof(PRBool));
nsCRT::memcpy(tmp2,mBits,mSize*sizeof(PRBool));
delete mBits;
mBits=tmp2;
mSize*=2;
#endif
}
mTags[mCount++]=aTag;
}
/**
*
* @update gess7/9/98
*/
eHTMLTags nsTagStack::Pop() {
eHTMLTags result=eHTMLTag_unknown;
if(mCount>0) {
result=mTags[--mCount];
mTags[mCount]=eHTMLTag_unknown;
mBits[mCount]=PR_FALSE;
}
return result;
}
/**
*
* @update gess7/9/98
*/
eHTMLTags nsTagStack::First() const {
if(mCount>0)
return mTags[0];
return eHTMLTag_unknown;
}
/**
*
* @update gess7/9/98
*/
eHTMLTags nsTagStack::Last() const {
if(mCount>0)
return mTags[mCount-1];
return eHTMLTag_unknown;
}
/***************************************************************
Now define the dtdcontext class
***************************************************************/
/**
*
* @update gess9/10/98
*/
nsDTDContext::nsDTDContext(int aDefaultSize) : mElements(aDefaultSize) {
mStyles=new nsTagStack(aDefaultSize);
}
/**
*
* @update gess9/10/98
*/
nsDTDContext::~nsDTDContext() {
while(mStyles){
nsTagStack* next=mStyles->mPrevious;
delete mStyles;
mStyles=next;
}
}
/**
* Creates and pushes a new style stack onto our
* internal list of style stacks.
* @update gess9/10/98
*/
void nsDTDContext::pushStyleStack(nsTagStack* aStyleStack){
if(!aStyleStack)
aStyleStack=new nsTagStack();
if(aStyleStack){
mStyles->mPrevious=mStyles;
mStyles=aStyleStack;
}
}
/**
* Pops the topmost style stack off our internal
* list of style stacks.
* @update gess9/10/98
*/
nsTagStack* nsDTDContext::popStyleStack(){
nsTagStack* result=0;
if(mStyles) {
result=mStyles;
mStyles=mStyles->mPrevious;
}
return result;
}

96
htmlparser/src/nsDTDUtils.h Normal file
Просмотреть файл

@ -0,0 +1,96 @@
/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
/*
* The contents of this file are subject to the Netscape Public License
* Version 1.0 (the "NPL"); you may not use this file except in
* compliance with the NPL. You may obtain a copy of the NPL at
* http://www.mozilla.org/NPL/
*
* Software distributed under the NPL is distributed on an "AS IS" basis,
* WITHOUT WARRANTY OF ANY KIND, either express or implied. See the NPL
* for the specific language governing rights and limitations under the
* NPL.
*
* The Initial Developer of this code under the NPL is Netscape
* Communications Corporation. Portions created by Netscape are
* Copyright (C) 1998 Netscape Communications Corporation. All Rights
* Reserved.
*/
/**
* MODULE NOTES:
* @update gess 4/1/98
*
*/
#ifndef DTDUTILS_
#define DTDUTILS_
#include "nsHTMLTags.h"
#include "nsHTMLTokens.h"
#include "nsCRT.h"
/***************************************************************
Before digging into the NavDTD, we'll define a helper
class called CTagStack.
Simply put, we've built ourselves a little data structure that
serves as a stack for htmltags (and associated bits).
What's special is that if you #define _dynstack 1, the stack
size can grow dynamically (like you'ld want in a release build.)
If you don't #define _dynstack 1, then the stack is a fixed size,
equal to the eStackSize enum. This makes debugging easier, because
you can see the htmltags on the stack if its not dynamic.
***************************************************************/
//#define _dynstack 1
class nsTagStack {
enum {eStackSize=200};
public:
nsTagStack(int aDefaultSize=50);
~nsTagStack();
void Push(eHTMLTags aTag);
eHTMLTags Pop();
eHTMLTags First() const;
eHTMLTags Last() const;
void Empty(void);
nsTagStack* mPrevious;
int mSize;
int mCount;
#ifdef _dynstack
eHTMLTags* mTags;
PRBool* mBits;
#else
eHTMLTags mTags[eStackSize];
PRBool mBits[eStackSize];
#endif
};
/***************************************************************
The dtdcontext class defines the current tag context (both
structural and stylistic). This small utility class allows us
to push/pop contexts at will, which makes handling styles in
certainly (unfriendly) elements (like tables) much easier.
***************************************************************/
class nsDTDContext {
public:
nsDTDContext(int aDefaultSize=50);
~nsDTDContext();
void pushStyleStack(nsTagStack* aStack=0);
nsTagStack* popStyleStack();
nsTagStack mElements; //no need to hide these members.
nsTagStack* mStyles; //the dtd should have direct access to them.
};
#endif

284
parser/htmlparser/src/CNavDTD.cpp
Просмотреть файл

@ -32,7 +32,7 @@
#include "prtypes.h" //this is here for debug reasons...
#include "prio.h"
#include "plstr.h"
#include "nsDTDUtils.h"
#ifdef XP_PC
#include <direct.h> //this is here for debug reasons...
#endif
@ -91,119 +91,6 @@ static eHTMLTags gWhitespaceTags[]={
eHTMLTag_newline, eHTMLTag_whitespace};
/************************************************************************
CTagStack class implementation.
The reason we use this class is so that we can view the stack state
in the usual way via the debugger.
************************************************************************/
CTagStack::CTagStack(int aDefaultSize) {
#ifdef _dynstack
mSize=aDefaultSize;
mTags =new eHTMLTags[mSize];
mBits =new PRBool[mSize];
#else
mSize=eStackSize;
#endif
mCount=0;
mPrevious=0;
nsCRT::zero(mTags,mSize*sizeof(eHTMLTags));
nsCRT::zero(mBits,mSize*sizeof(PRBool));
}
/**
* Default constructor
* @update gess7/9/98
* @param aDefaultsize tells the stack what size to start out.
* however, we'll autosize as needed.
*/
CTagStack::~CTagStack() {
#ifdef _dynstack
delete mTags;
delete mBits;
mTags=0;
mBits=0;
#endif
mSize=mCount=0;
}
/**
* Resets state of stack to be empty.
* @update gess7/9/98
*/
void CTagStack::Empty(void) {
mCount=0;
}
/**
*
* @update gess7/9/98
* @param
* @return
*/
void CTagStack::Push(eHTMLTags aTag) {
if(mCount>=mSize) {
#ifdef _dynstack
eHTMLTags* tmp=new eHTMLTags[2*mSize];
nsCRT::zero(tmp,2*mSize*sizeof(eHTMLTag_html));
nsCRT::memcpy(tmp,mTags,mSize*sizeof(eHTMLTag_html));
delete mTags;
mTags=tmp;
PRBool* tmp2=new PRBool[2*mSize];
nsCRT::zero(tmp2,2*mSize*sizeof(PRBool));
nsCRT::memcpy(tmp2,mBits,mSize*sizeof(PRBool));
delete mBits;
mBits=tmp2;
mSize*=2;
#endif
}
mTags[mCount++]=aTag;
}
/**
*
* @update gess7/9/98
* @param
* @return
*/
eHTMLTags CTagStack::Pop() {
eHTMLTags result=eHTMLTag_unknown;
if(mCount>0) {
result=mTags[--mCount];
mTags[mCount]=eHTMLTag_unknown;
mBits[mCount]=PR_FALSE;
}
return result;
}
/**
*
* @update gess7/9/98
* @param
* @return
*/
eHTMLTags CTagStack::First() const {
if(mCount>0)
return mTags[0];
return eHTMLTag_unknown;
}
/**
*
* @update gess7/9/98
* @param
* @return
*/
eHTMLTags CTagStack::Last() const {
if(mCount>0)
return mTags[mCount-1];
return eHTMLTag_unknown;
}
/**************************************************************
Now define the token deallocator class...
**************************************************************/
@ -460,18 +347,21 @@ void CNavDTD::InitializeDefaultTokenHandlers() {
* @param
* @return
*/
CNavDTD::CNavDTD() : nsIDTD(), mContextStack(), mTokenDeque(gTokenKiller) {
CNavDTD::CNavDTD() : nsIDTD(), mTokenDeque(gTokenKiller) {
NS_INIT_REFCNT();
mParser=0;
mSink = nsnull;
mDTDDebug=0;
mLineNumber=1;
mParseMode=eParseMode_navigator;
mStyleStack=new CTagStack();
nsCRT::zero(mTokenHandlers,sizeof(mTokenHandlers));
mHasOpenForm=PR_FALSE;
mHasOpenMap=PR_FALSE;
InitializeDefaultTokenHandlers();
mHeadContext=new nsDTDContext();
mBodyContext=new nsDTDContext();
mFormContext=0;
mMapContext=0;
}
/**
@ -483,9 +373,9 @@ CNavDTD::CNavDTD() : nsIDTD(), mContextStack(), mTokenDeque(gTokenKiller) {
*/
CNavDTD::~CNavDTD(){
DeleteTokenHandlers();
delete mStyleStack;
delete mHeadContext;
delete mBodyContext;
NS_IF_RELEASE(mDTDDebug);
}
/**
@ -530,39 +420,13 @@ PRBool CNavDTD::Verify(nsString& aURLRef){
else mDTDDebug->SetVerificationDirectory(kVerificationDir);
}
if(mDTDDebug) {
mDTDDebug->Verify(this,mParser,mContextStack.mCount,mContextStack.mTags,aURLRef);
mDTDDebug->Verify(this,mParser,
mBodyContext->mElements.mCount,
mBodyContext->mElements.mTags,aURLRef);
}
return result;
}
/**
* This method adds a new parser context to the list,
* pushing the current one to the next position.
* @update gess7/22/98
* @param ptr to new context
* @return nada
*/
void CNavDTD::PushStack(CTagStack& aStack) {
aStack.mPrevious=mStyleStack;
mStyleStack=&aStack;
}
/**
* This method pops the topmost context off the stack,
* returning it to the user. The next context (if any)
* becomes the current context.
* @update gess7/22/98
* @return prev. context
*/
CTagStack* CNavDTD::PopStack() {
CTagStack* oldStack=mStyleStack;
if(oldStack) {
mStyleStack=oldStack->mPrevious;
}
return oldStack;
}
/**
* This method is called to determine if the given DTD can parse
* a document in a given source-type.
@ -618,7 +482,7 @@ nsresult CNavDTD::WillBuildModel(nsString& aFilename,PRBool aNotifySink){
nsresult CNavDTD::DidBuildModel(PRInt32 anErrorCode,PRBool aNotifySink){
nsresult result= NS_OK;
if((kNoError==anErrorCode) && (mContextStack.mCount>0)) {
if((kNoError==anErrorCode) && (mBodyContext->mElements.mCount>0)) {
result = CloseContainersTo(0,eHTMLTag_unknown,PR_FALSE);
}
@ -655,7 +519,7 @@ nsresult CNavDTD::HandleToken(CToken* aToken){
if(theHandler) {
result=(*theHandler)(theToken,this);
if (mDTDDebug)
mDTDDebug->Verify(this, mParser, mContextStack.mCount, mContextStack.mTags, mFilename);
mDTDDebug->Verify(this, mParser, mBodyContext->mElements.mCount, mBodyContext->mElements.mTags, mFilename);
}
}//if
@ -681,7 +545,7 @@ nsresult CNavDTD::HandleToken(CToken* aToken){
nsresult CNavDTD::HandleDefaultStartToken(CToken* aToken,eHTMLTags aChildTag,nsIParserNode& aNode) {
NS_PRECONDITION(0!=aToken,kNullToken);
eHTMLTags theParentTag=mContextStack.Last();
eHTMLTags theParentTag=mBodyContext->mElements.Last();
nsresult result=NS_OK;
PRBool contains=CanContain(theParentTag,aChildTag);
@ -694,7 +558,7 @@ nsresult CNavDTD::HandleDefaultStartToken(CToken* aToken,eHTMLTags aChildTag,nsI
//You must determine what container hierarchy you need to hold aToken,
//and create that on the parsestack.
result=ReduceContextStackFor(aChildTag);
if(PR_FALSE==CanContain(mContextStack.Last(),aChildTag)) {
if(PR_FALSE==CanContain(mBodyContext->mElements.Last(),aChildTag)) {
//we unwound too far; now we have to recreate a valid context stack.
result=CreateContextStackFor(aChildTag);
}
@ -702,13 +566,13 @@ nsresult CNavDTD::HandleDefaultStartToken(CToken* aToken,eHTMLTags aChildTag,nsI
}
if(IsContainer(aChildTag)){
if(PR_TRUE==mContextStack.mBits[mContextStack.mCount-1]) {
if(PR_TRUE==mBodyContext->mElements.mBits[mBodyContext->mElements.mCount-1]) {
CloseTransientStyles(aChildTag);
}
result=OpenContainer(aNode,PR_TRUE);
}
else {
if(PR_FALSE==mContextStack.mBits[mContextStack.mCount-1]) {
if(PR_FALSE==mBodyContext->mElements.mBits[mBodyContext->mElements.mCount-1]) {
OpenTransientStyles(aChildTag);
}
result=AddLeaf(aNode);
@ -741,7 +605,7 @@ nsresult CNavDTD::HandleStartToken(CToken* aToken) {
if(NS_OK==result) {
//now check to see if this token should be omitted...
if(PR_FALSE==CanOmit(mContextStack.Last(),tokenTagType)) {
if(PR_FALSE==CanOmit(mBodyContext->mElements.Last(),tokenTagType)) {
switch(tokenTagType) {
@ -836,7 +700,7 @@ nsresult CNavDTD::HandleEndToken(CToken* aToken) {
//now check to see if this token should be omitted, or
//if it's gated from closing by the presence of another tag.
if(PR_TRUE==CanOmitEndTag(mContextStack.Last(),tokenTagType)) {
if(PR_TRUE==CanOmitEndTag(mBodyContext->mElements.Last(),tokenTagType)) {
UpdateStyleStackForCloseTag(tokenTagType,tokenTagType);
return result;
}
@ -867,7 +731,7 @@ nsresult CNavDTD::HandleEndToken(CToken* aToken) {
// Empty the transient style stack (we just closed any extra
// ones off so it's safe to do it now) because they don't carry
// forward across table cell boundaries.
mStyleStack->mCount=0;
mBodyContext->mStyles->mCount=0;
break;
default:
@ -894,7 +758,7 @@ nsresult CNavDTD::HandleEntityToken(CToken* aToken) {
CEntityToken* et = (CEntityToken*)(aToken);
nsresult result=NS_OK;
if(PR_FALSE==CanOmit(mContextStack.Last(),eHTMLTag_entity)) {
if(PR_FALSE==CanOmit(mBodyContext->mElements.Last(),eHTMLTag_entity)) {
nsCParserNode aNode((CHTMLToken*)aToken,mLineNumber);
result=AddLeaf(aNode);
}
@ -1802,7 +1666,7 @@ PRBool CNavDTD::CanOmitEndTag(eHTMLTags aParent,eHTMLTags aChild) const {
default:
if(IsGatedFromClosing(aChild))
result=PR_TRUE;
else if(IsCompatibleTag(aChild,mContextStack.Last()))
else if(IsCompatibleTag(aChild,mBodyContext->mElements.Last()))
result=PR_FALSE;
else result=(!HasOpenContainer(aChild));
break;
@ -1916,7 +1780,7 @@ eHTMLTags CNavDTD::GetDefaultParentTagFor(eHTMLTags aChildTag) const{
* @param aChild -- tag type of child
* @return TRUE if propagation closes; false otherwise
*/
PRBool CNavDTD::ForwardPropagate(CTagStack& aStack,eHTMLTags aParentTag,eHTMLTags aChildTag) {
PRBool CNavDTD::ForwardPropagate(nsTagStack& aStack,eHTMLTags aParentTag,eHTMLTags aChildTag) {
PRBool result=PR_FALSE;
switch(aParentTag) {
@ -1959,7 +1823,7 @@ PRBool CNavDTD::ForwardPropagate(CTagStack& aStack,eHTMLTags aParentTag,eHTMLTag
* @param aChild -- tag type of child
* @return TRUE if propagation closes; false otherwise
*/
PRBool CNavDTD::BackwardPropagate(CTagStack& aStack,eHTMLTags aParentTag,eHTMLTags aChildTag) const {
PRBool CNavDTD::BackwardPropagate(nsTagStack& aStack,eHTMLTags aParentTag,eHTMLTags aChildTag) const {
eHTMLTags theParentTag=aChildTag;
@ -2055,12 +1919,12 @@ PRBool CNavDTD::IsGatedFromClosing(eHTMLTags aChildTag) const {
***************************************************************************/
int theIndex;
int theTopIndex=mContextStack.mCount-1;
int theTopIndex=mBodyContext->mElements.mCount-1;
eHTMLTags theParent=GetDefaultParentTagFor(aChildTag);
while(eHTMLTag_unknown!=theParent) {
for(theIndex=theTopIndex;theIndex>tagPos;theIndex--){
if(mContextStack.mTags[theIndex]==theParent){
if(mBodyContext->mElements.mTags[theIndex]==theParent){
theGatePos=theIndex;
break;
}
@ -2088,7 +1952,7 @@ PRBool CNavDTD::IsGatedFromClosing(eHTMLTags aChildTag) const {
* @return tag id of topmost node in contextstack
*/
eHTMLTags CNavDTD::GetTopNode() const {
return mContextStack.Last();
return mBodyContext->mElements.Last();
}
/**
@ -2101,8 +1965,8 @@ eHTMLTags CNavDTD::GetTopNode() const {
*/
PRInt32 CNavDTD::GetTopmostIndexOf(eHTMLTags aTagSet[],PRInt32 aCount) const {
int i=0;
for(i=mContextStack.mCount-1;i>=0;i--){
if(FindTagInSet(mContextStack.mTags[i],aTagSet,aCount)) {
for(i=mBodyContext->mElements.mCount-1;i>=0;i--){
if(FindTagInSet(mBodyContext->mElements.mTags[i],aTagSet,aCount)) {
return i;
}
}
@ -2119,8 +1983,8 @@ PRInt32 CNavDTD::GetTopmostIndexOf(eHTMLTags aTagSet[],PRInt32 aCount) const {
*/
PRInt32 CNavDTD::GetTopmostIndexOf(eHTMLTags aTag) const {
int i=0;
for(i=mContextStack.mCount-1;i>=0;i--){
if(mContextStack.mTags[i]==aTag)
for(i=mBodyContext->mElements.mCount-1;i>=0;i--){
if(mBodyContext->mElements.mTags[i]==aTag)
return i;
}
return kNotFound;
@ -2149,10 +2013,10 @@ nsresult CNavDTD::OpenTransientStyles(eHTMLTags aTag){
if(!FindTagInSet(aTag,gWhitespaceTags,sizeof(gWhitespaceTags)/sizeof(eHTMLTag_unknown))) {
PRInt32 pos=0;
eHTMLTags parentTag=mContextStack.Last();
eHTMLTags parentTag=mBodyContext->mElements.Last();
if(CanContainStyles(parentTag)) {
for(pos=0;pos<mStyleStack->mCount;pos++) {
eHTMLTags theTag=mStyleStack->mTags[pos];
for(pos=0;pos<mBodyContext->mStyles->mCount;pos++) {
eHTMLTags theTag=mBodyContext->mStyles->mTags[pos];
if(PR_FALSE==HasOpenContainer(theTag)) {
CStartToken token(theTag);
@ -2166,7 +2030,7 @@ nsresult CNavDTD::OpenTransientStyles(eHTMLTags aTag){
default:
token.SetTypeID(theTag); //open the html container...
result=OpenContainer(theNode,PR_FALSE);
mContextStack.mBits[mContextStack.mCount-1]=PR_TRUE;
mBodyContext->mElements.mBits[mBodyContext->mElements.mCount-1]=PR_TRUE;
} //switch
}
if(NS_OK!=result)
@ -2192,10 +2056,10 @@ nsresult CNavDTD::OpenTransientStyles(eHTMLTags aTag){
nsresult CNavDTD::CloseTransientStyles(eHTMLTags aTag){
nsresult result=NS_OK;
if((mStyleStack->mCount>0) && (mContextStack.mBits[mContextStack.mCount-1])) {
if((mBodyContext->mStyles->mCount>0) && (mBodyContext->mElements.mBits[mBodyContext->mElements.mCount-1])) {
if(!FindTagInSet(aTag,gWhitespaceTags,sizeof(gWhitespaceTags)/sizeof(eHTMLTag_unknown))) {
result=CloseContainersTo(mStyleStack->mTags[0],PR_FALSE);
mContextStack.mBits[mContextStack.mCount-1]=PR_FALSE;
result=CloseContainersTo(mBodyContext->mStyles->mTags[0],PR_FALSE);
mBodyContext->mElements.mBits[mBodyContext->mElements.mCount-1]=PR_FALSE;
}//if
}//if
@ -2211,10 +2075,10 @@ nsresult CNavDTD::CloseTransientStyles(eHTMLTags aTag){
* @param aNode -- next node to be added to model
*/
nsresult CNavDTD::OpenHTML(const nsIParserNode& aNode){
NS_PRECONDITION(mContextStack.mCount >= 0, kInvalidTagStackPos);
NS_PRECONDITION(mBodyContext->mElements.mCount >= 0, kInvalidTagStackPos);
nsresult result=mSink->OpenHTML(aNode);
mContextStack.Push((eHTMLTags)aNode.GetNodeType());
mBodyContext->mElements.Push((eHTMLTags)aNode.GetNodeType());
return result;
}
@ -2228,9 +2092,9 @@ nsresult CNavDTD::OpenHTML(const nsIParserNode& aNode){
* @return TRUE if ok, FALSE if error
*/
nsresult CNavDTD::CloseHTML(const nsIParserNode& aNode){
NS_PRECONDITION(mContextStack.mCount > 0, kInvalidTagStackPos);
NS_PRECONDITION(mBodyContext->mElements.mCount > 0, kInvalidTagStackPos);
nsresult result=mSink->CloseHTML(aNode);
mContextStack.Pop();
mBodyContext->mElements.Pop();
return result;
}
@ -2244,7 +2108,7 @@ nsresult CNavDTD::CloseHTML(const nsIParserNode& aNode){
* @return TRUE if ok, FALSE if error
*/
nsresult CNavDTD::OpenHead(const nsIParserNode& aNode){
mContextStack.Push(eHTMLTag_head);
mBodyContext->mElements.Push(eHTMLTag_head);
nsresult result=mSink->OpenHead(aNode);
return result;
}
@ -2259,7 +2123,7 @@ nsresult CNavDTD::OpenHead(const nsIParserNode& aNode){
*/
nsresult CNavDTD::CloseHead(const nsIParserNode& aNode){
nsresult result=mSink->CloseHead(aNode);
mContextStack.Pop();
mBodyContext->mElements.Pop();
return result;
}
@ -2272,10 +2136,10 @@ nsresult CNavDTD::CloseHead(const nsIParserNode& aNode){
* @return TRUE if ok, FALSE if error
*/
nsresult CNavDTD::OpenBody(const nsIParserNode& aNode){
NS_PRECONDITION(mContextStack.mCount >= 0, kInvalidTagStackPos);
NS_PRECONDITION(mBodyContext->mElements.mCount >= 0, kInvalidTagStackPos);
nsresult result=NS_OK;
eHTMLTags topTag=mContextStack.Last();
eHTMLTags topTag=mBodyContext->mElements.Last();
if(eHTMLTag_html!=topTag) {
@ -2302,7 +2166,7 @@ nsresult CNavDTD::OpenBody(const nsIParserNode& aNode){
if(NS_OK==result) {
result=mSink->OpenBody(aNode);
mContextStack.Push((eHTMLTags)aNode.GetNodeType());
mBodyContext->mElements.Push((eHTMLTags)aNode.GetNodeType());
}
return result;
}
@ -2316,9 +2180,9 @@ nsresult CNavDTD::OpenBody(const nsIParserNode& aNode){
* @return TRUE if ok, FALSE if error
*/
nsresult CNavDTD::CloseBody(const nsIParserNode& aNode){
NS_PRECONDITION(mContextStack.mCount >= 0, kInvalidTagStackPos);
NS_PRECONDITION(mBodyContext->mElements.mCount >= 0, kInvalidTagStackPos);
nsresult result=mSink->CloseBody(aNode);
mContextStack.Pop();
mBodyContext->mElements.Pop();
return result;
}
@ -2399,9 +2263,9 @@ nsresult CNavDTD::CloseMap(const nsIParserNode& aNode){
* @return TRUE if ok, FALSE if error
*/
nsresult CNavDTD::OpenFrameset(const nsIParserNode& aNode){
NS_PRECONDITION(mContextStack.mCount >= 0, kInvalidTagStackPos);
NS_PRECONDITION(mBodyContext->mElements.mCount >= 0, kInvalidTagStackPos);
nsresult result=mSink->OpenFrameset(aNode);
mContextStack.Push((eHTMLTags)aNode.GetNodeType());
mBodyContext->mElements.Push((eHTMLTags)aNode.GetNodeType());
return result;
}
@ -2414,9 +2278,9 @@ nsresult CNavDTD::OpenFrameset(const nsIParserNode& aNode){
* @return TRUE if ok, FALSE if error
*/
nsresult CNavDTD::CloseFrameset(const nsIParserNode& aNode){
NS_PRECONDITION(mContextStack.mCount > 0, kInvalidTagStackPos);
NS_PRECONDITION(mBodyContext->mElements.mCount > 0, kInvalidTagStackPos);
nsresult result=mSink->CloseFrameset(aNode);
mContextStack.Pop();
mBodyContext->mElements.Pop();
return result;
}
@ -2431,7 +2295,7 @@ nsresult CNavDTD::CloseFrameset(const nsIParserNode& aNode){
*/
nsresult
CNavDTD::OpenContainer(const nsIParserNode& aNode,PRBool aUpdateStyleStack){
NS_PRECONDITION(mContextStack.mCount >= 0, kInvalidTagStackPos);
NS_PRECONDITION(mBodyContext->mElements.mCount >= 0, kInvalidTagStackPos);
nsresult result=NS_OK;
eHTMLTags nodeType=(eHTMLTags)aNode.GetNodeType();
@ -2474,7 +2338,7 @@ CNavDTD::OpenContainer(const nsIParserNode& aNode,PRBool aUpdateStyleStack){
default:
result=mSink->OpenContainer(aNode);
mContextStack.Push((eHTMLTags)aNode.GetNodeType());
mBodyContext->mElements.Push((eHTMLTags)aNode.GetNodeType());
break;
}
@ -2496,7 +2360,7 @@ CNavDTD::OpenContainer(const nsIParserNode& aNode,PRBool aUpdateStyleStack){
nsresult
CNavDTD::CloseContainer(const nsIParserNode& aNode,eHTMLTags aTag,
PRBool aUpdateStyles){
NS_PRECONDITION(mContextStack.mCount > 0, kInvalidTagStackPos);
NS_PRECONDITION(mBodyContext->mElements.mCount > 0, kInvalidTagStackPos);
nsresult result=NS_OK;
eHTMLTags nodeType=(eHTMLTags)aNode.GetNodeType();
@ -2528,11 +2392,11 @@ CNavDTD::CloseContainer(const nsIParserNode& aNode,eHTMLTags aTag,
case eHTMLTag_title:
default:
result=mSink->CloseContainer(aNode);
mContextStack.Pop();
mBodyContext->mElements.Pop();
break;
}
mContextStack.mBits[mContextStack.mCount]=PR_FALSE;
mBodyContext->mElements.mBits[mBodyContext->mElements.mCount]=PR_FALSE;
if((NS_OK==result) && (PR_TRUE==aUpdateStyles)){
UpdateStyleStackForCloseTag(nodeType,aTag);
}
@ -2551,15 +2415,15 @@ CNavDTD::CloseContainer(const nsIParserNode& aNode,eHTMLTags aTag,
nsresult
CNavDTD::CloseContainersTo(PRInt32 anIndex,eHTMLTags aTag,
PRBool aUpdateStyles){
NS_PRECONDITION(mContextStack.mCount > 0, kInvalidTagStackPos);
NS_PRECONDITION(mBodyContext->mElements.mCount > 0, kInvalidTagStackPos);
nsresult result=NS_OK;
static CEndToken aToken(gEmpty);
nsCParserNode theNode(&aToken,mLineNumber);
if((anIndex<mContextStack.mCount) && (anIndex>=0)) {
while(mContextStack.mCount>anIndex) {
eHTMLTags theTag=mContextStack.Last();
if((anIndex<mBodyContext->mElements.mCount) && (anIndex>=0)) {
while(mBodyContext->mElements.mCount>anIndex) {
eHTMLTags theTag=mBodyContext->mElements.Last();
aToken.SetTypeID(theTag);
result=CloseContainer(theNode,aTag,aUpdateStyles);
}
@ -2576,7 +2440,7 @@ CNavDTD::CloseContainersTo(PRInt32 anIndex,eHTMLTags aTag,
* @return TRUE if ok, FALSE if error
*/
nsresult CNavDTD::CloseContainersTo(eHTMLTags aTag,PRBool aUpdateStyles){
NS_PRECONDITION(mContextStack.mCount > 0, kInvalidTagStackPos);
NS_PRECONDITION(mBodyContext->mElements.mCount > 0, kInvalidTagStackPos);
PRInt32 pos=GetTopmostIndexOf(aTag);
@ -2585,7 +2449,7 @@ nsresult CNavDTD::CloseContainersTo(eHTMLTags aTag,PRBool aUpdateStyles){
return CloseContainersTo(pos,aTag,aUpdateStyles);
}
eHTMLTags theTopTag=mContextStack.Last();
eHTMLTags theTopTag=mBodyContext->mElements.Last();
if(IsCompatibleTag(aTag,theTopTag)) {
//if you're here, it's because we're trying to close one style tag,
//but a different one is actually open. Because this is NAV4x
@ -2617,10 +2481,10 @@ nsresult CNavDTD::CloseContainersTo(eHTMLTags aTag,PRBool aUpdateStyles){
* @return TRUE if ok, FALSE if error
*/
nsresult CNavDTD::CloseTopmostContainer(){
NS_PRECONDITION(mContextStack.mCount > 0, kInvalidTagStackPos);
NS_PRECONDITION(mBodyContext->mElements.mCount > 0, kInvalidTagStackPos);
CEndToken aToken(gEmpty);
eHTMLTags theTag=mContextStack.Last();
eHTMLTags theTag=mBodyContext->mElements.Last();
aToken.SetTypeID(theTag);
nsCParserNode theNode(&aToken,mLineNumber);
return CloseContainer(theNode,theTag,PR_TRUE);
@ -2639,7 +2503,7 @@ nsresult CNavDTD::AddLeaf(const nsIParserNode& aNode){
return result;
}
CTagStack kPropagationStack;
static nsTagStack kPropagationStack;
/**
* This method gets called to create a valid context stack
@ -2658,7 +2522,7 @@ nsresult CNavDTD::CreateContextStackFor(eHTMLTags aChildTag){
nsresult result=(nsresult)kContextMismatch;
PRInt32 cnt=0;
eHTMLTags theTop=mContextStack.Last();
eHTMLTags theTop=mBodyContext->mElements.Last();
PRBool bResult=ForwardPropagate(kPropagationStack,theTop,aChildTag);
if(PR_FALSE==bResult){
@ -2694,7 +2558,7 @@ nsresult CNavDTD::CreateContextStackFor(eHTMLTags aChildTag){
else bResult=BackwardPropagate(kPropagationStack,eHTMLTag_html,aChildTag);
} //elseif
if((0==mContextStack.mCount) || (mContextStack.Last()==kPropagationStack.Pop()))
if((0==mBodyContext->mElements.mCount) || (mBodyContext->mElements.Last()==kPropagationStack.Pop()))
result=NS_OK;
//now, build up the stack according to the tags
@ -2725,13 +2589,13 @@ nsresult CNavDTD::CreateContextStackFor(eHTMLTags aChildTag){
*/
nsresult CNavDTD::ReduceContextStackFor(eHTMLTags aChildTag){
nsresult result=NS_OK;
eHTMLTags topTag=mContextStack.Last();
eHTMLTags topTag=mBodyContext->mElements.Last();
while( (topTag!=kNotFound) &&
(PR_FALSE==CanContain(topTag,aChildTag)) &&
(PR_FALSE==CanContainIndirect(topTag,aChildTag))) {
CloseTopmostContainer();
topTag=mContextStack.Last();
topTag=mBodyContext->mElements.Last();
}
return result;
}
@ -2750,7 +2614,7 @@ CNavDTD::UpdateStyleStackForOpenTag(eHTMLTags aTag,eHTMLTags anActualTag){
nsresult result=0;
if(FindTagInSet(aTag,gStyleTags,sizeof(gStyleTags)/sizeof(eHTMLTag_unknown))) {
mStyleStack->Push(aTag);
mBodyContext->mStyles->Push(aTag);
}
else {
switch (aTag) {
@ -2779,10 +2643,10 @@ nsresult
CNavDTD::UpdateStyleStackForCloseTag(eHTMLTags aTag,eHTMLTags anActualTag){
nsresult result=0;
if(mStyleStack->mCount>0) {
if(mBodyContext->mStyles->mCount>0) {
if(FindTagInSet(aTag,gStyleTags,sizeof(gStyleTags)/sizeof(eHTMLTag_unknown))) {
if(aTag==anActualTag)
mStyleStack->Pop();
mBodyContext->mStyles->Pop();
}
else {
switch (aTag) {

56
parser/htmlparser/src/CNavDTD.h
Просмотреть файл

@ -86,6 +86,7 @@
#include "nsVoidArray.h"
#include "nsDeque.h"
#define NS_INAVHTML_DTD_IID \
{0x5c5cce40, 0xcfd6, 0x11d1, \
{0xaa, 0xda, 0x00, 0x80, 0x5f, 0x8a, 0x3e, 0x14}}
@ -97,49 +98,10 @@ class nsIParserNode;
class nsCParserNode;
class CITokenHandler;
class nsParser;
class nsDTDContext;
class nsTagStack;
/***************************************************************
Before digging into the NavDTD, we'll define a helper
class called CTagStack.
Simply put, we've built ourselves a little data structure that
serves as a stack for htmltags (and associated bits).
What's special is that if you #define _dynstack 1, the stack
size can grow dynamically (like you'ld want in a release build.)
If you don't #define _dynstack 1, then the stack is a fixed size,
equal to the eStackSize enum. This makes debugging easier, because
you can see the htmltags on the stack if its not dynamic.
***************************************************************/
//#define _dynstack 1
CLASS_EXPORT_HTMLPARS CTagStack {
enum {eStackSize=200};
public:
CTagStack(int aDefaultSize=50);
~CTagStack();
void Push(eHTMLTags aTag);
eHTMLTags Pop();
eHTMLTags First() const;
eHTMLTags Last() const;
void Empty(void);
int mSize;
int mCount;
#ifdef _dynstack
eHTMLTags* mTags;
PRBool* mBits;
#else
eHTMLTags mTags[200];
PRBool mBits[200];
CTagStack* mPrevious;
#endif
};
/***************************************************************
Now the main event: CNavDTD.
@ -381,7 +343,7 @@ CLASS_EXPORT_HTMLPARS CNavDTD : public nsIDTD {
* @param aChild -- tag type of child
* @return True if closure was achieved -- other false
*/
virtual PRBool ForwardPropagate(CTagStack& aTagStack,eHTMLTags aParentTag,eHTMLTags aChildTag);
virtual PRBool ForwardPropagate(nsTagStack& aTagStack,eHTMLTags aParentTag,eHTMLTags aChildTag);
/**
* This method tries to design a context map (without actually
@ -392,7 +354,7 @@ CLASS_EXPORT_HTMLPARS CNavDTD : public nsIDTD {
* @param aChild -- tag type of child
* @return True if closure was achieved -- other false
*/
virtual PRBool BackwardPropagate(CTagStack& aTagStack,eHTMLTags aParentTag,eHTMLTags aChildTag) const;
virtual PRBool BackwardPropagate(nsTagStack& aTagStack,eHTMLTags aParentTag,eHTMLTags aChildTag) const;
/**
* Ask parser if a given container is open ANYWHERE on stack
@ -601,8 +563,6 @@ protected:
protected:
void PushStack(CTagStack& aStack);
CTagStack* PopStack();
PRInt32 CollectAttributes(nsCParserNode& aNode,PRInt32 aCount);
PRInt32 CollectSkippedContent(nsCParserNode& aNode,PRInt32& aCount);
@ -612,8 +572,10 @@ protected:
CITokenHandler* mTokenHandlers[eToken_last];
CTagStack mContextStack;
CTagStack* mStyleStack;
nsDTDContext* mHeadContext;
nsDTDContext* mBodyContext;
nsDTDContext* mFormContext;
nsDTDContext* mMapContext;
PRBool mHasOpenForm;
PRBool mHasOpenMap;

2
parser/htmlparser/src/Makefile
Просмотреть файл

@ -28,6 +28,8 @@ CPPSRCS = \
nsScanner.cpp \
nsToken.cpp \
nsTokenHandler.cpp \
nsNavDTD.cpp \
nsDTDUtils.cpp \
CNavDTD.cpp \
COtherDTD.cpp \
CRtfDTD.cpp \

2
parser/htmlparser/src/makefile.win
Просмотреть файл

@ -24,6 +24,7 @@ MODULE=raptor
REQUIRES=xpcom raptor netlib
CPPSRCS= \
nsDTDUtils.cpp \
CNavDTD.cpp \
COtherDTD.cpp \
CRtfDTD.cpp \
@ -47,6 +48,7 @@ CPPSRCS= \
$(NULL)
CPP_OBJS= \
.\$(OBJDIR)\nsDTDUtils.obj \
.\$(OBJDIR)\CNavDTD.obj \
.\$(OBJDIR)\COtherDTD.obj \
.\$(OBJDIR)\CRtfDTD.obj \

187
parser/htmlparser/src/nsDTDUtils.cpp Normal file
Просмотреть файл

@ -0,0 +1,187 @@
/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
/*
* The contents of this file are subject to the Netscape Public License
* Version 1.0 (the "NPL"); you may not use this file except in
* compliance with the NPL. You may obtain a copy of the NPL at
* http://www.mozilla.org/NPL/
*
* Software distributed under the NPL is distributed on an "AS IS" basis,
* WITHOUT WARRANTY OF ANY KIND, either express or implied. See the NPL
* for the specific language governing rights and limitations under the
* NPL.
*
* The Initial Developer of this code under the NPL is Netscape
* Communications Corporation. Portions created by Netscape are
* Copyright (C) 1998 Netscape Communications Corporation. All Rights
* Reserved.
*/
#include "nsDTDUtils.h"
/***************************************************************
First, define the tagstack class
***************************************************************/
/**
* Default constructor
* @update gess9/10/98
*/
nsTagStack::nsTagStack(int aDefaultSize) {
#ifdef _dynstack
mSize=aDefaultSize;
mTags =new eHTMLTags[mSize];
mBits =new PRBool[mSize];
#else
mSize=eStackSize;
#endif
mCount=0;
mPrevious=0;
nsCRT::zero(mTags,mSize*sizeof(eHTMLTags));
nsCRT::zero(mBits,mSize*sizeof(PRBool));
}
/**
* Default destructor
* @update gess7/9/98
*/
nsTagStack::~nsTagStack() {
#ifdef _dynstack
delete mTags;
delete mBits;
mTags=0;
mBits=0;
#endif
mSize=mCount=0;
}
/**
* Resets state of stack to be empty.
* @update gess7/9/98
*/
void nsTagStack::Empty(void) {
mCount=0;
}
/**
*
* @update gess7/9/98
*/
void nsTagStack::Push(eHTMLTags aTag) {
if(mCount>=mSize) {
#ifdef _dynstack
eHTMLTags* tmp=new eHTMLTags[2*mSize];
nsCRT::zero(tmp,2*mSize*sizeof(eHTMLTag_html));
nsCRT::memcpy(tmp,mTags,mSize*sizeof(eHTMLTag_html));
delete mTags;
mTags=tmp;
PRBool* tmp2=new PRBool[2*mSize];
nsCRT::zero(tmp2,2*mSize*sizeof(PRBool));
nsCRT::memcpy(tmp2,mBits,mSize*sizeof(PRBool));
delete mBits;
mBits=tmp2;
mSize*=2;
#endif
}
mTags[mCount++]=aTag;
}
/**
*
* @update gess7/9/98
*/
eHTMLTags nsTagStack::Pop() {
eHTMLTags result=eHTMLTag_unknown;
if(mCount>0) {
result=mTags[--mCount];
mTags[mCount]=eHTMLTag_unknown;
mBits[mCount]=PR_FALSE;
}
return result;
}
/**
*
* @update gess7/9/98
*/
eHTMLTags nsTagStack::First() const {
if(mCount>0)
return mTags[0];
return eHTMLTag_unknown;
}
/**
*
* @update gess7/9/98
*/
eHTMLTags nsTagStack::Last() const {
if(mCount>0)
return mTags[mCount-1];
return eHTMLTag_unknown;
}
/***************************************************************
Now define the dtdcontext class
***************************************************************/
/**
*
* @update gess9/10/98
*/
nsDTDContext::nsDTDContext(int aDefaultSize) : mElements(aDefaultSize) {
mStyles=new nsTagStack(aDefaultSize);
}
/**
*
* @update gess9/10/98
*/
nsDTDContext::~nsDTDContext() {
while(mStyles){
nsTagStack* next=mStyles->mPrevious;
delete mStyles;
mStyles=next;
}
}
/**
* Creates and pushes a new style stack onto our
* internal list of style stacks.
* @update gess9/10/98
*/
void nsDTDContext::pushStyleStack(nsTagStack* aStyleStack){
if(!aStyleStack)
aStyleStack=new nsTagStack();
if(aStyleStack){
mStyles->mPrevious=mStyles;
mStyles=aStyleStack;
}
}
/**
* Pops the topmost style stack off our internal
* list of style stacks.
* @update gess9/10/98
*/
nsTagStack* nsDTDContext::popStyleStack(){
nsTagStack* result=0;
if(mStyles) {
result=mStyles;
mStyles=mStyles->mPrevious;
}
return result;
}

96
parser/htmlparser/src/nsDTDUtils.h Normal file
Просмотреть файл

@ -0,0 +1,96 @@
/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
/*
* The contents of this file are subject to the Netscape Public License
* Version 1.0 (the "NPL"); you may not use this file except in
* compliance with the NPL. You may obtain a copy of the NPL at
* http://www.mozilla.org/NPL/
*
* Software distributed under the NPL is distributed on an "AS IS" basis,
* WITHOUT WARRANTY OF ANY KIND, either express or implied. See the NPL
* for the specific language governing rights and limitations under the
* NPL.
*
* The Initial Developer of this code under the NPL is Netscape
* Communications Corporation. Portions created by Netscape are
* Copyright (C) 1998 Netscape Communications Corporation. All Rights
* Reserved.
*/
/**
* MODULE NOTES:
* @update gess 4/1/98
*
*/
#ifndef DTDUTILS_
#define DTDUTILS_
#include "nsHTMLTags.h"
#include "nsHTMLTokens.h"
#include "nsCRT.h"
/***************************************************************
Before digging into the NavDTD, we'll define a helper
class called CTagStack.
Simply put, we've built ourselves a little data structure that
serves as a stack for htmltags (and associated bits).
What's special is that if you #define _dynstack 1, the stack
size can grow dynamically (like you'ld want in a release build.)
If you don't #define _dynstack 1, then the stack is a fixed size,
equal to the eStackSize enum. This makes debugging easier, because
you can see the htmltags on the stack if its not dynamic.
***************************************************************/
//#define _dynstack 1
class nsTagStack {
enum {eStackSize=200};
public:
nsTagStack(int aDefaultSize=50);
~nsTagStack();
void Push(eHTMLTags aTag);
eHTMLTags Pop();
eHTMLTags First() const;
eHTMLTags Last() const;
void Empty(void);
nsTagStack* mPrevious;
int mSize;
int mCount;
#ifdef _dynstack
eHTMLTags* mTags;
PRBool* mBits;
#else
eHTMLTags mTags[eStackSize];
PRBool mBits[eStackSize];
#endif
};
/***************************************************************
The dtdcontext class defines the current tag context (both
structural and stylistic). This small utility class allows us
to push/pop contexts at will, which makes handling styles in
certainly (unfriendly) elements (like tables) much easier.
***************************************************************/
class nsDTDContext {
public:
nsDTDContext(int aDefaultSize=50);
~nsDTDContext();
void pushStyleStack(nsTagStack* aStack=0);
nsTagStack* popStyleStack();
nsTagStack mElements; //no need to hide these members.
nsTagStack* mStyles; //the dtd should have direct access to them.
};
#endif