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/* -*- Mode: C++; tab-width: 4; 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/. */
#ifndef TRANSFRMX_TXEXECUTIONSTATE_H
#define TRANSFRMX_TXEXECUTIONSTATE_H
#include "txCore.h"
#include "txStack.h"
#include "txXMLUtils.h"
#include "txIXPathContext.h"
#include "txVariableMap.h"
#include "nsTHashtable.h"
#include "nsHashKeys.h"
#include "txKey.h"
#include "txStylesheet.h"
#include "txXPathTreeWalker.h"
#include "nsTArray.h"
#include "mozilla/Result.h"
class txAOutputHandlerFactory;
class txAXMLEventHandler;
class txInstruction;
class txLoadedDocumentEntry : public nsStringHashKey {
public:
explicit txLoadedDocumentEntry(KeyTypePointer aStr)
: nsStringHashKey(aStr), mLoadResult(NS_OK) {}
txLoadedDocumentEntry(txLoadedDocumentEntry&& aOther)
: nsStringHashKey(std::move(aOther)),
mDocument(std::move(aOther.mDocument)),
mLoadResult(std::move(aOther.mLoadResult)) {
NS_ERROR("We're horked.");
}
~txLoadedDocumentEntry() {
if (mDocument) {
txXPathNodeUtils::release(mDocument.get());
}
}
bool LoadingFailed() {
NS_ASSERTION(NS_SUCCEEDED(mLoadResult) || !mDocument,
"Load failed but we still got a document?");
return NS_FAILED(mLoadResult);
}
mozilla::UniquePtr<txXPathNode> mDocument;
nsresult mLoadResult;
};
class txLoadedDocumentsHash : public nsTHashtable<txLoadedDocumentEntry> {
public:
txLoadedDocumentsHash() : nsTHashtable<txLoadedDocumentEntry>(4) {}
~txLoadedDocumentsHash();
[[nodiscard]] nsresult init(const txXPathNode& aSource);
private:
friend class txExecutionState;
mozilla::UniquePtr<txXPathNode> mSourceDocument;
};
class txExecutionState : public txIMatchContext {
public:
txExecutionState(txStylesheet* aStylesheet, bool aDisableLoads);
~txExecutionState();
nsresult init(const txXPathNode& aNode,
txOwningExpandedNameMap<txIGlobalParameter>* aGlobalParams);
nsresult end(nsresult aResult);
TX_DECL_MATCH_CONTEXT;
/**
* Struct holding information about a current template rule
*/
class TemplateRule {
public:
txStylesheet::ImportFrame* mFrame;
int32_t mModeNsId;
RefPtr<nsAtom> mModeLocalName;
RefPtr<txParameterMap> mParams;
};
// Stack functions
void pushEvalContext(txIEvalContext* aContext);
txIEvalContext* popEvalContext();
/**
* Helper that deletes all entries before |aContext| and then
* pops it off the stack. The caller must delete |aContext| if
* desired.
*/
void popAndDeleteEvalContextUntil(txIEvalContext* aContext);
void pushBool(bool aBool);
bool popBool();
void pushResultHandler(txAXMLEventHandler* aHandler);
txAXMLEventHandler* popResultHandler();
void pushTemplateRule(txStylesheet::ImportFrame* aFrame,
const txExpandedName& aMode, txParameterMap* aParams);
void popTemplateRule();
void pushParamMap(txParameterMap* aParams);
already_AddRefed<txParameterMap> popParamMap();
// state-getting functions
txIEvalContext* getEvalContext();
const txXPathNode* retrieveDocument(const nsAString& aUri);
nsresult getKeyNodes(const txExpandedName& aKeyName, const txXPathNode& aRoot,
const nsAString& aKeyValue, bool aIndexIfNotFound,
txNodeSet** aResult);
TemplateRule* getCurrentTemplateRule();
const txXPathNode& getSourceDocument() {
NS_ASSERTION(mLoadedDocuments.mSourceDocument, "Need a source document!");
return *mLoadedDocuments.mSourceDocument;
}
// state-modification functions
mozilla::Result<txInstruction*, nsresult> getNextInstruction();
nsresult runTemplate(txInstruction* aInstruction);
nsresult runTemplate(txInstruction* aInstruction, txInstruction* aReturnTo);
void gotoInstruction(txInstruction* aNext);
void returnFromTemplate();
nsresult bindVariable(const txExpandedName& aName, txAExprResult* aValue);
void removeVariable(const txExpandedName& aName);
void stopProcessing() { mStopProcessing = true; }
txAXMLEventHandler* mOutputHandler;
txAXMLEventHandler* mResultHandler;
mozilla::UniquePtr<txAXMLEventHandler> mObsoleteHandler;
txAOutputHandlerFactory* mOutputHandlerFactory;
RefPtr<txParameterMap> mTemplateParams;
RefPtr<txStylesheet> mStylesheet;
private:
txStack mReturnStack;
txStack mLocalVarsStack;
txStack mEvalContextStack;
nsTArray<bool> mBoolStack;
txStack mResultHandlerStack;
nsTArray<RefPtr<txParameterMap>> mParamStack;
txInstruction* mNextInstruction;
txVariableMap* mLocalVariables;
txVariableMap mGlobalVariableValues;
RefPtr<txAExprResult> mGlobalVarPlaceholderValue;
int32_t mRecursionDepth;
AutoTArray<TemplateRule, 10> mTemplateRules;
txIEvalContext* mEvalContext;
txIEvalContext* mInitialEvalContext;
// Document* mRTFDocument;
txOwningExpandedNameMap<txIGlobalParameter>* mGlobalParams;
txLoadedDocumentsHash mLoadedDocuments;
txKeyHash mKeyHash;
RefPtr<txResultRecycler> mRecycler;
bool mDisableLoads;
bool mStopProcessing = false;
static const int32_t kMaxRecursionDepth;
};
#endif
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