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// Copyright 2014 PDFium Authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
// Original code copyright 2014 Foxit Software Inc. http://www.foxitsoftware.com
#include "fxjs/xfa/cfxjse_resolveprocessor.h"
#include <algorithm>
#include <utility>
#include <vector>
#include "core/fxcrt/fx_extension.h"
#include "fxjs/xfa/cfxjse_engine.h"
#include "fxjs/xfa/cfxjse_nodehelper.h"
#include "fxjs/xfa/cfxjse_value.h"
#include "fxjs/xfa/cjx_object.h"
#include "third_party/base/check.h"
#include "third_party/base/check_op.h"
#include "third_party/base/stl_util.h"
#include "xfa/fxfa/parser/cxfa_document.h"
#include "xfa/fxfa/parser/cxfa_localemgr.h"
#include "xfa/fxfa/parser/cxfa_node.h"
#include "xfa/fxfa/parser/cxfa_object.h"
#include "xfa/fxfa/parser/cxfa_occur.h"
#include "xfa/fxfa/parser/xfa_utils.h"
namespace {
void DoPredicateFilter(v8::Isolate* pIsolate,
WideString wsCondition,
size_t iFoundCount,
CFXJSE_ResolveNodeData* pRnd) {
DCHECK_EQ(iFoundCount, pRnd->m_Result.objects.size());
WideString wsExpression;
CXFA_Script::Type eLangType = CXFA_Script::Type::Unknown;
if (wsCondition.First(2).EqualsASCII(".[") && wsCondition.Back() == L']')
eLangType = CXFA_Script::Type::Formcalc;
else if (wsCondition.First(2).EqualsASCII(".(") && wsCondition.Back() == L')')
eLangType = CXFA_Script::Type::Javascript;
else
return;
wsExpression = wsCondition.Substr(2, wsCondition.GetLength() - 3);
for (size_t i = iFoundCount; i > 0; --i) {
auto pRetValue = std::make_unique<CFXJSE_Value>();
bool bRet = pRnd->m_pSC->RunScript(eLangType, wsExpression.AsStringView(),
pRetValue.get(),
pRnd->m_Result.objects[i - 1].Get());
if (!bRet || !pRetValue->ToBoolean(pIsolate))
pRnd->m_Result.objects.erase(pRnd->m_Result.objects.begin() + i - 1);
}
}
} // namespace
CFXJSE_ResolveProcessor::CFXJSE_ResolveProcessor()
: m_pNodeHelper(std::make_unique<CFXJSE_NodeHelper>()) {}
CFXJSE_ResolveProcessor::~CFXJSE_ResolveProcessor() = default;
bool CFXJSE_ResolveProcessor::Resolve(v8::Isolate* pIsolate,
CFXJSE_ResolveNodeData& rnd) {
if (!rnd.m_CurObject)
return false;
if (!rnd.m_CurObject->IsNode()) {
if (rnd.m_dwStyles & XFA_RESOLVENODE_Attributes) {
return ResolveForAttributeRs(rnd.m_CurObject.Get(), &rnd.m_Result,
rnd.m_wsName.AsStringView());
}
return false;
}
if (rnd.m_dwStyles & XFA_RESOLVENODE_AnyChild)
return ResolveAnyChild(pIsolate, rnd);
if (rnd.m_wsName.GetLength()) {
wchar_t wch = rnd.m_wsName[0];
switch (wch) {
case '$':
return ResolveDollar(pIsolate, rnd);
case '!':
return ResolveExcalmatory(pIsolate, rnd);
case '#':
return ResolveNumberSign(pIsolate, rnd);
case '*':
return ResolveAsterisk(rnd);
// TODO(dsinclair): We could probably remove this.
case '.':
return ResolveAnyChild(pIsolate, rnd);
default:
break;
}
}
if (rnd.m_uHashName == XFA_HASHCODE_This && rnd.m_nLevel == 0) {
rnd.m_Result.objects.emplace_back(rnd.m_pSC->GetThisObject());
return true;
}
if (rnd.m_CurObject->GetElementType() == XFA_Element::Xfa) {
CXFA_Object* pObjNode =
rnd.m_pSC->GetDocument()->GetXFAObject(rnd.m_uHashName);
if (pObjNode) {
rnd.m_Result.objects.emplace_back(pObjNode);
} else if (rnd.m_uHashName == XFA_HASHCODE_Xfa) {
rnd.m_Result.objects.emplace_back(rnd.m_CurObject.Get());
} else if ((rnd.m_dwStyles & XFA_RESOLVENODE_Attributes) &&
ResolveForAttributeRs(rnd.m_CurObject.Get(), &rnd.m_Result,
rnd.m_wsName.AsStringView())) {
return true;
}
if (!rnd.m_Result.objects.empty())
FilterCondition(pIsolate, rnd.m_wsCondition, &rnd);
return !rnd.m_Result.objects.empty();
}
if (!ResolveNormal(pIsolate, rnd) && rnd.m_uHashName == XFA_HASHCODE_Xfa)
rnd.m_Result.objects.emplace_back(rnd.m_pSC->GetDocument()->GetRoot());
return !rnd.m_Result.objects.empty();
}
bool CFXJSE_ResolveProcessor::ResolveAnyChild(v8::Isolate* pIsolate,
CFXJSE_ResolveNodeData& rnd) {
CXFA_Node* pParent = ToNode(rnd.m_CurObject.Get());
if (!pParent)
return false;
WideStringView wsName = rnd.m_wsName.AsStringView();
WideString wsCondition = rnd.m_wsCondition;
const bool bClassName = !wsName.IsEmpty() && wsName[0] == '#';
CXFA_Node* const pChild =
bClassName
? pParent->GetOneChildOfClass(wsName.Last(wsName.GetLength() - 1))
: pParent->GetOneChildNamed(wsName);
if (!pChild)
return false;
if (wsCondition.IsEmpty()) {
rnd.m_Result.objects.emplace_back(pChild);
return true;
}
std::vector<CXFA_Node*> nodes;
for (const auto& pObject : rnd.m_Result.objects)
nodes.push_back(pObject->AsNode());
std::vector<CXFA_Node*> siblings = pChild->GetSiblings(bClassName);
nodes.insert(nodes.end(), siblings.begin(), siblings.end());
rnd.m_Result.objects =
std::vector<cppgc::Member<CXFA_Object>>(nodes.begin(), nodes.end());
FilterCondition(pIsolate, wsCondition, &rnd);
return !rnd.m_Result.objects.empty();
}
bool CFXJSE_ResolveProcessor::ResolveDollar(v8::Isolate* pIsolate,
CFXJSE_ResolveNodeData& rnd) {
WideString wsName = rnd.m_wsName;
WideString wsCondition = rnd.m_wsCondition;
int32_t iNameLen = wsName.GetLength();
if (iNameLen == 1) {
rnd.m_Result.objects.emplace_back(rnd.m_CurObject.Get());
return true;
}
if (rnd.m_nLevel > 0)
return false;
XFA_HashCode dwNameHash = static_cast<XFA_HashCode>(
FX_HashCode_GetW(wsName.AsStringView().Last(iNameLen - 1)));
if (dwNameHash == XFA_HASHCODE_Xfa) {
rnd.m_Result.objects.emplace_back(rnd.m_pSC->GetDocument()->GetRoot());
} else {
CXFA_Object* pObjNode = rnd.m_pSC->GetDocument()->GetXFAObject(dwNameHash);
if (pObjNode)
rnd.m_Result.objects.emplace_back(pObjNode);
}
if (!rnd.m_Result.objects.empty())
FilterCondition(pIsolate, wsCondition, &rnd);
return !rnd.m_Result.objects.empty();
}
bool CFXJSE_ResolveProcessor::ResolveExcalmatory(v8::Isolate* pIsolate,
CFXJSE_ResolveNodeData& rnd) {
if (rnd.m_nLevel > 0)
return false;
CXFA_Node* datasets =
ToNode(rnd.m_pSC->GetDocument()->GetXFAObject(XFA_HASHCODE_Datasets));
if (!datasets)
return false;
CFXJSE_ResolveNodeData rndFind(rnd.m_pSC.Get());
rndFind.m_CurObject = datasets;
rndFind.m_wsName = rnd.m_wsName.Last(rnd.m_wsName.GetLength() - 1);
rndFind.m_uHashName = static_cast<XFA_HashCode>(
FX_HashCode_GetW(rndFind.m_wsName.AsStringView()));
rndFind.m_nLevel = rnd.m_nLevel + 1;
rndFind.m_dwStyles = XFA_RESOLVENODE_Children;
rndFind.m_wsCondition = rnd.m_wsCondition;
Resolve(pIsolate, rndFind);
rnd.m_Result.objects.insert(rnd.m_Result.objects.end(),
rndFind.m_Result.objects.begin(),
rndFind.m_Result.objects.end());
return !rnd.m_Result.objects.empty();
}
bool CFXJSE_ResolveProcessor::ResolveNumberSign(v8::Isolate* pIsolate,
CFXJSE_ResolveNodeData& rnd) {
WideString wsName = rnd.m_wsName.Last(rnd.m_wsName.GetLength() - 1);
WideString wsCondition = rnd.m_wsCondition;
CXFA_Node* curNode = ToNode(rnd.m_CurObject.Get());
if (ResolveForAttributeRs(curNode, &rnd.m_Result, wsName.AsStringView()))
return true;
CFXJSE_ResolveNodeData rndFind(rnd.m_pSC.Get());
rndFind.m_nLevel = rnd.m_nLevel + 1;
rndFind.m_dwStyles = rnd.m_dwStyles;
rndFind.m_dwStyles |= XFA_RESOLVENODE_TagName;
rndFind.m_dwStyles &= ~XFA_RESOLVENODE_Attributes;
rndFind.m_wsName = std::move(wsName);
rndFind.m_uHashName = static_cast<XFA_HashCode>(
FX_HashCode_GetW(rndFind.m_wsName.AsStringView()));
rndFind.m_wsCondition = wsCondition;
rndFind.m_CurObject = curNode;
ResolveNormal(pIsolate, rndFind);
if (rndFind.m_Result.objects.empty())
return false;
if (wsCondition.IsEmpty() &&
pdfium::Contains(rndFind.m_Result.objects, curNode)) {
rnd.m_Result.objects.emplace_back(curNode);
} else {
rnd.m_Result.objects.insert(rnd.m_Result.objects.end(),
rndFind.m_Result.objects.begin(),
rndFind.m_Result.objects.end());
}
return !rnd.m_Result.objects.empty();
}
bool CFXJSE_ResolveProcessor::ResolveForAttributeRs(
CXFA_Object* curNode,
CFXJSE_Engine::ResolveResult* rnd,
WideStringView strAttr) {
Optional<XFA_SCRIPTATTRIBUTEINFO> info =
XFA_GetScriptAttributeByName(curNode->GetElementType(), strAttr);
if (!info.has_value())
return false;
rnd->type = CFXJSE_Engine::ResolveResult::Type::kAttribute;
rnd->script_attribute = info.value();
rnd->objects.emplace_back(curNode);
return true;
}
bool CFXJSE_ResolveProcessor::ResolveNormal(v8::Isolate* pIsolate,
CFXJSE_ResolveNodeData& rnd) {
if (rnd.m_nLevel > 32 || !rnd.m_CurObject->IsNode())
return false;
CXFA_Node* curNode = rnd.m_CurObject->AsNode();
size_t nNum = rnd.m_Result.objects.size();
uint32_t dwStyles = rnd.m_dwStyles;
WideString& wsName = rnd.m_wsName;
XFA_HashCode uNameHash = rnd.m_uHashName;
WideString& wsCondition = rnd.m_wsCondition;
CFXJSE_ResolveNodeData rndFind(rnd.m_pSC.Get());
rndFind.m_wsName = rnd.m_wsName;
rndFind.m_wsCondition = rnd.m_wsCondition;
rndFind.m_nLevel = rnd.m_nLevel + 1;
rndFind.m_uHashName = uNameHash;
std::vector<CXFA_Node*> children;
std::vector<CXFA_Node*> properties;
CXFA_Node* pVariablesNode = nullptr;
CXFA_Node* pPageSetNode = nullptr;
for (CXFA_Node* pChild = curNode->GetFirstChild(); pChild;
pChild = pChild->GetNextSibling()) {
if (pChild->GetElementType() == XFA_Element::Variables) {
pVariablesNode = pChild;
continue;
}
if (pChild->GetElementType() == XFA_Element::PageSet) {
pPageSetNode = pChild;
continue;
}
if (curNode->HasProperty(pChild->GetElementType()))
properties.push_back(pChild);
else
children.push_back(pChild);
}
if ((dwStyles & XFA_RESOLVENODE_Properties) && pVariablesNode) {
if (pVariablesNode->GetClassHashCode() == uNameHash) {
rnd.m_Result.objects.emplace_back(pVariablesNode);
} else {
rndFind.m_CurObject = pVariablesNode;
SetStylesForChild(dwStyles, rndFind);
WideString wsSaveCondition = std::move(rndFind.m_wsCondition);
ResolveNormal(pIsolate, rndFind);
rndFind.m_wsCondition = std::move(wsSaveCondition);
rnd.m_Result.objects.insert(rnd.m_Result.objects.end(),
rndFind.m_Result.objects.begin(),
rndFind.m_Result.objects.end());
rndFind.m_Result.objects.clear();
}
if (rnd.m_Result.objects.size() > nNum) {
FilterCondition(pIsolate, wsCondition, &rnd);
return !rnd.m_Result.objects.empty();
}
}
if (dwStyles & XFA_RESOLVENODE_Children) {
bool bSetFlag = false;
if (pPageSetNode && (dwStyles & XFA_RESOLVENODE_Properties))
children.push_back(pPageSetNode);
for (CXFA_Node* child : children) {
if (dwStyles & XFA_RESOLVENODE_TagName) {
if (child->GetClassHashCode() == uNameHash)
rnd.m_Result.objects.emplace_back(child);
} else if (child->GetNameHash() == uNameHash) {
rnd.m_Result.objects.emplace_back(child);
}
if (child->GetElementType() != XFA_Element::PageSet &&
child->IsTransparent()) {
if (!bSetFlag) {
SetStylesForChild(dwStyles, rndFind);
bSetFlag = true;
}
rndFind.m_CurObject = child;
WideString wsSaveCondition = std::move(rndFind.m_wsCondition);
ResolveNormal(pIsolate, rndFind);
rndFind.m_wsCondition = std::move(wsSaveCondition);
rnd.m_Result.objects.insert(rnd.m_Result.objects.end(),
rndFind.m_Result.objects.begin(),
rndFind.m_Result.objects.end());
rndFind.m_Result.objects.clear();
}
}
if (rnd.m_Result.objects.size() > nNum) {
if (!(dwStyles & XFA_RESOLVENODE_ALL)) {
std::vector<CXFA_Node*> upArrayNodes;
if (curNode->IsTransparent()) {
CXFA_Node* pCurrent = ToNode(rnd.m_Result.objects.front().Get());
if (pCurrent) {
upArrayNodes =
pCurrent->GetSiblings(!!(dwStyles & XFA_RESOLVENODE_TagName));
}
}
if (upArrayNodes.size() > rnd.m_Result.objects.size()) {
CXFA_Object* pSaveObject = rnd.m_Result.objects.front().Get();
rnd.m_Result.objects = std::vector<cppgc::Member<CXFA_Object>>(
upArrayNodes.begin(), upArrayNodes.end());
rnd.m_Result.objects.front() = pSaveObject;
}
}
FilterCondition(pIsolate, wsCondition, &rnd);
return !rnd.m_Result.objects.empty();
}
}
if (dwStyles & XFA_RESOLVENODE_Attributes) {
if (ResolveForAttributeRs(curNode, &rnd.m_Result, wsName.AsStringView()))
return 1;
}
if (dwStyles & XFA_RESOLVENODE_Properties) {
for (CXFA_Node* pChildProperty : properties) {
if (pChildProperty->IsUnnamed()) {
if (pChildProperty->GetClassHashCode() == uNameHash)
rnd.m_Result.objects.emplace_back(pChildProperty);
continue;
}
if (pChildProperty->GetNameHash() == uNameHash &&
pChildProperty->GetElementType() != XFA_Element::Extras &&
pChildProperty->GetElementType() != XFA_Element::Items) {
rnd.m_Result.objects.emplace_back(pChildProperty);
}
}
if (rnd.m_Result.objects.size() > nNum) {
FilterCondition(pIsolate, wsCondition, &rnd);
return !rnd.m_Result.objects.empty();
}
CXFA_Node* pProp = nullptr;
if (XFA_Element::Subform == curNode->GetElementType() &&
XFA_HASHCODE_Occur == uNameHash) {
CXFA_Node* pInstanceManager = curNode->GetInstanceMgrOfSubform();
if (pInstanceManager) {
pProp = pInstanceManager->JSObject()->GetOrCreateProperty<CXFA_Occur>(
0, XFA_Element::Occur);
}
} else {
XFA_Element eType = XFA_GetElementByName(wsName.AsStringView());
if (eType == XFA_Element::PageSet) {
pProp = curNode->JSObject()->GetProperty<CXFA_Node>(0, eType);
} else if (eType != XFA_Element::Unknown) {
pProp = curNode->JSObject()->GetOrCreateProperty<CXFA_Node>(0, eType);
}
}
if (pProp) {
rnd.m_Result.objects.emplace_back(pProp);
return !rnd.m_Result.objects.empty();
}
}
CXFA_Node* const parentNode = curNode->GetParent();
uint32_t uCurClassHash = curNode->GetClassHashCode();
if (!parentNode) {
if (uCurClassHash == uNameHash) {
rnd.m_Result.objects.emplace_back(curNode);
FilterCondition(pIsolate, wsCondition, &rnd);
if (!rnd.m_Result.objects.empty())
return true;
}
return false;
}
if (dwStyles & XFA_RESOLVENODE_Siblings) {
CXFA_Node* child = parentNode->GetFirstChild();
uint32_t dwSubStyles =
XFA_RESOLVENODE_Children | XFA_RESOLVENODE_Properties;
if (dwStyles & XFA_RESOLVENODE_TagName)
dwSubStyles |= XFA_RESOLVENODE_TagName;
if (dwStyles & XFA_RESOLVENODE_ALL)
dwSubStyles |= XFA_RESOLVENODE_ALL;
rndFind.m_dwStyles = dwSubStyles;
while (child) {
if (child == curNode) {
if (dwStyles & XFA_RESOLVENODE_TagName) {
if (uCurClassHash == uNameHash)
rnd.m_Result.objects.emplace_back(curNode);
} else {
if (child->GetNameHash() == uNameHash) {
rnd.m_Result.objects.emplace_back(curNode);
if (rnd.m_nLevel == 0 && wsCondition.IsEmpty()) {
rnd.m_Result.objects.clear();
rnd.m_Result.objects.emplace_back(curNode);
return true;
}
}
}
child = child->GetNextSibling();
continue;
}
if (dwStyles & XFA_RESOLVENODE_TagName) {
if (child->GetClassHashCode() == uNameHash)
rnd.m_Result.objects.emplace_back(child);
} else if (child->GetNameHash() == uNameHash) {
rnd.m_Result.objects.emplace_back(child);
}
bool bInnerSearch = false;
if (parentNode->HasProperty(child->GetElementType())) {
if ((child->GetElementType() == XFA_Element::Variables ||
child->GetElementType() == XFA_Element::PageSet)) {
bInnerSearch = true;
}
} else if (child->IsTransparent()) {
bInnerSearch = true;
}
if (bInnerSearch) {
rndFind.m_CurObject = child;
WideString wsOriginCondition = std::move(rndFind.m_wsCondition);
uint32_t dwOriginStyle = rndFind.m_dwStyles;
rndFind.m_dwStyles = dwOriginStyle | XFA_RESOLVENODE_ALL;
ResolveNormal(pIsolate, rndFind);
rndFind.m_dwStyles = dwOriginStyle;
rndFind.m_wsCondition = std::move(wsOriginCondition);
rnd.m_Result.objects.insert(rnd.m_Result.objects.end(),
rndFind.m_Result.objects.begin(),
rndFind.m_Result.objects.end());
rndFind.m_Result.objects.clear();
}
child = child->GetNextSibling();
}
if (rnd.m_Result.objects.size() > nNum) {
if (parentNode->IsTransparent()) {
std::vector<CXFA_Node*> upArrayNodes;
CXFA_Node* pCurrent = ToNode(rnd.m_Result.objects.front().Get());
if (pCurrent) {
upArrayNodes =
pCurrent->GetSiblings(!!(dwStyles & XFA_RESOLVENODE_TagName));
}
if (upArrayNodes.size() > rnd.m_Result.objects.size()) {
CXFA_Object* pSaveObject = rnd.m_Result.objects.front().Get();
rnd.m_Result.objects = std::vector<cppgc::Member<CXFA_Object>>(
upArrayNodes.begin(), upArrayNodes.end());
rnd.m_Result.objects.front() = pSaveObject;
}
}
FilterCondition(pIsolate, wsCondition, &rnd);
return !rnd.m_Result.objects.empty();
}
}
if (dwStyles & XFA_RESOLVENODE_Parent) {
uint32_t dwSubStyles = XFA_RESOLVENODE_Siblings | XFA_RESOLVENODE_Parent |
XFA_RESOLVENODE_Properties;
if (dwStyles & XFA_RESOLVENODE_TagName)
dwSubStyles |= XFA_RESOLVENODE_TagName;
if (dwStyles & XFA_RESOLVENODE_ALL)
dwSubStyles |= XFA_RESOLVENODE_ALL;
rndFind.m_dwStyles = dwSubStyles;
rndFind.m_CurObject = parentNode;
rnd.m_pSC->GetUpObjectArray()->push_back(parentNode);
ResolveNormal(pIsolate, rndFind);
rnd.m_Result.objects.insert(rnd.m_Result.objects.end(),
rndFind.m_Result.objects.begin(),
rndFind.m_Result.objects.end());
rndFind.m_Result.objects.clear();
if (rnd.m_Result.objects.size() > nNum)
return true;
}
return false;
}
bool CFXJSE_ResolveProcessor::ResolveAsterisk(CFXJSE_ResolveNodeData& rnd) {
CXFA_Node* curNode = ToNode(rnd.m_CurObject.Get());
std::vector<CXFA_Node*> array = curNode->GetNodeListWithFilter(
XFA_NodeFilter_Children | XFA_NodeFilter_Properties);
rnd.m_Result.objects.insert(rnd.m_Result.objects.end(), array.begin(),
array.end());
return !rnd.m_Result.objects.empty();
}
int32_t CFXJSE_ResolveProcessor::GetFilter(WideStringView wsExpression,
int32_t nStart,
CFXJSE_ResolveNodeData& rnd) {
DCHECK(nStart > -1);
int32_t iLength = wsExpression.GetLength();
if (nStart >= iLength)
return 0;
WideString& wsName = rnd.m_wsName;
WideString& wsCondition = rnd.m_wsCondition;
int32_t nNameCount = 0;
int32_t nConditionCount = 0;
{
// Span's lifetime must end before ReleaseBuffer() below.
pdfium::span<wchar_t> pNameBuf = wsName.GetBuffer(iLength - nStart);
pdfium::span<wchar_t> pConditionBuf =
wsCondition.GetBuffer(iLength - nStart);
pdfium::span<const wchar_t> pSrc = wsExpression.span();
std::vector<int32_t> stack;
int32_t nType = -1;
wchar_t wPrev = 0;
wchar_t wCur;
bool bIsCondition = false;
while (nStart < iLength) {
wCur = pSrc[nStart++];
if (wCur == '.') {
if (nNameCount == 0) {
rnd.m_dwStyles |= XFA_RESOLVENODE_AnyChild;
continue;
}
if (wPrev == '\\') {
pNameBuf[nNameCount - 1] = wPrev = '.';
continue;
}
wchar_t wLookahead = nStart < iLength ? pSrc[nStart] : 0;
if (wLookahead != '[' && wLookahead != '(' && nType < 0)
break;
}
if (wCur == '[' || wCur == '(') {
bIsCondition = true;
} else if (wCur == '.' && nStart < iLength &&
(pSrc[nStart] == '[' || pSrc[nStart] == '(')) {
bIsCondition = true;
}
if (bIsCondition)
pConditionBuf[nConditionCount++] = wCur;
else
pNameBuf[nNameCount++] = wCur;
if ((nType == 0 && wCur == ']') || (nType == 1 && wCur == ')') ||
(nType == 2 && wCur == '"')) {
nType = stack.empty() ? -1 : stack.back();
if (!stack.empty())
stack.pop_back();
} else if (wCur == '[') {
stack.push_back(nType);
nType = 0;
} else if (wCur == '(') {
stack.push_back(nType);
nType = 1;
} else if (wCur == '"') {
stack.push_back(nType);
nType = 2;
}
wPrev = wCur;
}
if (!stack.empty())
return -1;
}
wsName.ReleaseBuffer(nNameCount);
wsCondition.ReleaseBuffer(nConditionCount);
wsName.Trim();
wsCondition.Trim();
rnd.m_uHashName =
static_cast<XFA_HashCode>(FX_HashCode_GetW(wsName.AsStringView()));
return nStart;
}
void CFXJSE_ResolveProcessor::ConditionArray(size_t iCurIndex,
WideString wsCondition,
size_t iFoundCount,
CFXJSE_ResolveNodeData* pRnd) {
size_t iLen = wsCondition.GetLength();
bool bRelative = false;
bool bAll = false;
size_t i = 1;
for (; i < iLen; ++i) {
wchar_t ch = wsCondition[i];
if (ch == ' ')
continue;
if (ch == '+' || ch == '-')
bRelative = true;
else if (ch == '*')
bAll = true;
break;
}
if (bAll) {
if (pRnd->m_dwStyles & XFA_RESOLVENODE_CreateNode) {
if (pRnd->m_dwStyles & XFA_RESOLVENODE_Bind) {
m_pNodeHelper->m_pCreateParent = ToNode(pRnd->m_CurObject.Get());
m_pNodeHelper->m_iCreateCount = 1;
pRnd->m_Result.objects.clear();
m_pNodeHelper->m_iCurAllStart = -1;
m_pNodeHelper->m_pAllStartParent = nullptr;
} else if (m_pNodeHelper->m_iCurAllStart == -1) {
m_pNodeHelper->m_iCurAllStart = m_iCurStart;
m_pNodeHelper->m_pAllStartParent = ToNode(pRnd->m_CurObject.Get());
}
} else if (pRnd->m_dwStyles & XFA_RESOLVENODE_BindNew) {
if (m_pNodeHelper->m_iCurAllStart == -1)
m_pNodeHelper->m_iCurAllStart = m_iCurStart;
}
return;
}
if (iFoundCount == 1 && !iLen)
return;
int32_t iIndex = wsCondition.Substr(i, iLen - 1 - i).GetInteger();
if (bRelative)
iIndex += iCurIndex;
if (iIndex < 0 || static_cast<size_t>(iIndex) >= iFoundCount) {
if (pRnd->m_dwStyles & XFA_RESOLVENODE_CreateNode) {
m_pNodeHelper->m_pCreateParent = ToNode(pRnd->m_CurObject.Get());
m_pNodeHelper->m_iCreateCount = iIndex - iFoundCount + 1;
}
pRnd->m_Result.objects.clear();
} else {
pRnd->m_Result.objects = std::vector<cppgc::Member<CXFA_Object>>(
1, pRnd->m_Result.objects[iIndex]);
}
}
void CFXJSE_ResolveProcessor::FilterCondition(v8::Isolate* pIsolate,
WideString wsCondition,
CFXJSE_ResolveNodeData* pRnd) {
size_t iCurIndex = 0;
const auto* pArray = pRnd->m_pSC->GetUpObjectArray();
if (!pArray->empty()) {
CXFA_Node* pNode = pArray->back();
bool bIsProperty = pNode->IsProperty();
bool bIsClassIndex =
pNode->IsUnnamed() ||
(bIsProperty && pNode->GetElementType() != XFA_Element::PageSet);
iCurIndex = pNode->GetIndex(bIsProperty, bIsClassIndex);
}
size_t iFoundCount = pRnd->m_Result.objects.size();
wsCondition.Trim();
int32_t iLen = wsCondition.GetLength();
if (!iLen) {
if (pRnd->m_dwStyles & XFA_RESOLVENODE_ALL)
return;
if (iFoundCount == 1)
return;
if (iFoundCount <= iCurIndex) {
if (pRnd->m_dwStyles & XFA_RESOLVENODE_CreateNode) {
m_pNodeHelper->m_pCreateParent = ToNode(pRnd->m_CurObject.Get());
m_pNodeHelper->m_iCreateCount = iCurIndex - iFoundCount + 1;
}
pRnd->m_Result.objects.clear();
return;
}
pRnd->m_Result.objects = std::vector<cppgc::Member<CXFA_Object>>(
1, pRnd->m_Result.objects[iCurIndex]);
return;
}
wchar_t wTypeChar = wsCondition[0];
switch (wTypeChar) {
case '[':
ConditionArray(iCurIndex, wsCondition, iFoundCount, pRnd);
return;
case '.':
if (iLen > 1 && (wsCondition[1] == '[' || wsCondition[1] == '('))
DoPredicateFilter(pIsolate, wsCondition, iFoundCount, pRnd);
return;
case '(':
case '"':
default:
return;
}
}
void CFXJSE_ResolveProcessor::SetStylesForChild(uint32_t dwParentStyles,
CFXJSE_ResolveNodeData& rnd) {
uint32_t dwSubStyles = XFA_RESOLVENODE_Children;
if (dwParentStyles & XFA_RESOLVENODE_TagName)
dwSubStyles |= XFA_RESOLVENODE_TagName;
dwSubStyles &= ~XFA_RESOLVENODE_Parent;
dwSubStyles &= ~XFA_RESOLVENODE_Siblings;
dwSubStyles &= ~XFA_RESOLVENODE_Properties;
dwSubStyles |= XFA_RESOLVENODE_ALL;
rnd.m_dwStyles = dwSubStyles;
}
int32_t CFXJSE_ResolveProcessor::IndexForDataBind(WideString& wsNextCondition,
int32_t iCount) {
if (m_pNodeHelper->CreateNodeForCondition(wsNextCondition) &&
m_pNodeHelper->m_eLastCreateType == XFA_Element::DataGroup) {
return 0;
}
return iCount - 1;
}
CFXJSE_ResolveNodeData::CFXJSE_ResolveNodeData(CFXJSE_Engine* pSC)
: m_pSC(pSC) {}
CFXJSE_ResolveNodeData::~CFXJSE_ResolveNodeData() = default;