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/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
/* 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/. */
#ifndef TRANSFRMX_TXSTYLESHEETCOMPILER_H
#define TRANSFRMX_TXSTYLESHEETCOMPILER_H
#include "mozilla/Attributes.h"
#include "txStack.h"
#include "txXSLTPatterns.h"
#include "txExpr.h"
#include "txIXPathContext.h"
#include "nsAutoPtr.h"
#include "txStylesheet.h"
#include "nsTArray.h"
#include "mozilla/net/ReferrerPolicy.h"
extern bool
TX_XSLTFunctionAvailable(nsIAtom* aName, int32_t aNameSpaceID);
class txHandlerTable;
class txElementContext;
class txInstructionContainer;
class txInstruction;
class txNamespaceMap;
class txToplevelItem;
class txPushNewContext;
class txStylesheetCompiler;
class txInScopeVariable;
class txElementContext : public txObject
{
public:
explicit txElementContext(const nsAString& aBaseURI);
txElementContext(const txElementContext& aOther);
bool mPreserveWhitespace;
bool mForwardsCompatibleParsing;
nsString mBaseURI;
RefPtr<txNamespaceMap> mMappings;
nsTArray<int32_t> mInstructionNamespaces;
int32_t mDepth;
};
class txACompileObserver
{
public:
NS_IMETHOD_(MozExternalRefCountType) AddRef() = 0;
NS_IMETHOD_(MozExternalRefCountType) Release() = 0;
virtual nsresult loadURI(const nsAString& aUri,
const nsAString& aReferrerUri,
mozilla::net::ReferrerPolicy aReferrerPolicy,
txStylesheetCompiler* aCompiler) = 0;
virtual void onDoneCompiling(txStylesheetCompiler* aCompiler,
nsresult aResult,
const char16_t *aErrorText = nullptr,
const char16_t *aParam = nullptr) = 0;
};
#define TX_DECL_ACOMPILEOBSERVER \
nsresult loadURI(const nsAString& aUri, const nsAString& aReferrerUri, \
mozilla::net::ReferrerPolicy aReferrerPolicy, \
txStylesheetCompiler* aCompiler); \
void onDoneCompiling(txStylesheetCompiler* aCompiler, nsresult aResult, \
const char16_t *aErrorText = nullptr, \
const char16_t *aParam = nullptr);
class txStylesheetCompilerState : public txIParseContext
{
public:
explicit txStylesheetCompilerState(txACompileObserver* aObserver);
~txStylesheetCompilerState();
nsresult init(const nsAString& aStylesheetURI,
mozilla::net::ReferrerPolicy aReferrerPolicy,
txStylesheet* aStylesheet, txListIterator* aInsertPosition);
// Embedded stylesheets state
bool handleEmbeddedSheet()
{
return mEmbedStatus == eInEmbed;
}
void doneEmbedding()
{
mEmbedStatus = eHasEmbed;
}
// Stack functions
enum enumStackType
{
eElementHandler,
eHandlerTable,
eVariableItem,
eCopy,
eInstruction,
ePushNewContext,
eConditionalGoto,
eCheckParam,
ePushNullTemplateRule
};
nsresult pushHandlerTable(txHandlerTable* aTable);
void popHandlerTable();
nsresult pushSorter(txPushNewContext* aSorter);
void popSorter();
nsresult pushChooseGotoList();
void popChooseGotoList();
nsresult pushObject(txObject* aObject);
txObject* popObject();
nsresult pushPtr(void* aPtr, enumStackType aType);
void* popPtr(enumStackType aType);
// stylesheet functions
nsresult addToplevelItem(txToplevelItem* aItem);
nsresult openInstructionContainer(txInstructionContainer* aContainer);
void closeInstructionContainer();
nsresult addInstruction(nsAutoPtr<txInstruction>&& aInstruction);
nsresult loadIncludedStylesheet(const nsAString& aURI);
nsresult loadImportedStylesheet(const nsAString& aURI,
txStylesheet::ImportFrame* aFrame);
// misc
nsresult addGotoTarget(txInstruction** aTargetPointer);
nsresult addVariable(const txExpandedName& aName);
// txIParseContext
nsresult resolveNamespacePrefix(nsIAtom* aPrefix, int32_t& aID) override;
nsresult resolveFunctionCall(nsIAtom* aName, int32_t aID,
FunctionCall** aFunction) override;
bool caseInsensitiveNameTests() override;
/**
* Should the stylesheet be parsed in forwards compatible parsing mode.
*/
bool fcp()
{
return mElementContext->mForwardsCompatibleParsing;
}
void SetErrorOffset(uint32_t aOffset) override;
bool allowed(Allowed aAllowed) override
{
return !(mDisAllowed & aAllowed);
}
bool ignoreError(nsresult aResult)
{
// Some errors shouldn't be ignored even in forwards compatible parsing
// mode.
return aResult != NS_ERROR_XSLT_CALL_TO_KEY_NOT_ALLOWED &&
fcp();
}
static void shutdown();
RefPtr<txStylesheet> mStylesheet;
txHandlerTable* mHandlerTable;
nsAutoPtr<txElementContext> mElementContext;
txPushNewContext* mSorter;
nsAutoPtr<txList> mChooseGotoList;
bool mDOE;
bool mSearchingForFallback;
uint16_t mDisAllowed;
protected:
RefPtr<txACompileObserver> mObserver;
nsTArray<txInScopeVariable*> mInScopeVariables;
nsTArray<txStylesheetCompiler*> mChildCompilerList;
// embed info, target information is the ID
nsString mTarget;
enum
{
eNoEmbed,
eNeedEmbed,
eInEmbed,
eHasEmbed
} mEmbedStatus;
nsString mStylesheetURI;
bool mIsTopCompiler;
bool mDoneWithThisStylesheet;
txStack mObjectStack;
txStack mOtherStack;
nsTArray<enumStackType> mTypeStack;
private:
txInstruction** mNextInstrPtr;
txListIterator mToplevelIterator;
nsTArray<txInstruction**> mGotoTargetPointers;
mozilla::net::ReferrerPolicy mReferrerPolicy;
};
struct txStylesheetAttr
{
int32_t mNamespaceID;
nsCOMPtr<nsIAtom> mLocalName;
nsCOMPtr<nsIAtom> mPrefix;
nsString mValue;
};
class txStylesheetCompiler final : private txStylesheetCompilerState,
public txACompileObserver
{
public:
friend class txStylesheetCompilerState;
friend bool TX_XSLTFunctionAvailable(nsIAtom* aName,
int32_t aNameSpaceID);
txStylesheetCompiler(const nsAString& aStylesheetURI,
mozilla::net::ReferrerPolicy aReferrerPolicy,
txACompileObserver* aObserver);
txStylesheetCompiler(const nsAString& aStylesheetURI,
txStylesheet* aStylesheet,
txListIterator* aInsertPosition,
mozilla::net::ReferrerPolicy aReferrerPolicy,
txACompileObserver* aObserver);
void setBaseURI(const nsString& aBaseURI);
nsresult startElement(int32_t aNamespaceID, nsIAtom* aLocalName,
nsIAtom* aPrefix, txStylesheetAttr* aAttributes,
int32_t aAttrCount);
nsresult startElement(const char16_t *aName,
const char16_t **aAtts,
int32_t aAttrCount);
nsresult endElement();
nsresult characters(const nsAString& aStr);
nsresult doneLoading();
void cancel(nsresult aError, const char16_t *aErrorText = nullptr,
const char16_t *aParam = nullptr);
txStylesheet* getStylesheet();
TX_DECL_ACOMPILEOBSERVER
NS_INLINE_DECL_REFCOUNTING(txStylesheetCompiler)
private:
// Private destructor, to discourage deletion outside of Release():
~txStylesheetCompiler()
{
}
nsresult startElementInternal(int32_t aNamespaceID, nsIAtom* aLocalName,
nsIAtom* aPrefix,
txStylesheetAttr* aAttributes,
int32_t aAttrCount);
nsresult flushCharacters();
nsresult ensureNewElementContext();
nsresult maybeDoneCompiling();
nsString mCharacters;
nsresult mStatus;
};
class txInScopeVariable {
public:
explicit txInScopeVariable(const txExpandedName& aName) : mName(aName), mLevel(1)
{
}
txExpandedName mName;
int32_t mLevel;
};
#endif
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