IFDE_CSSSelector* CFDE_CSSSelector::FromString(IFX_MEMAllocator* pStaticStore,
const FX_WCHAR* psz,
int32_t iLen) {
FXSYS_assert(pStaticStore != NULL && psz != NULL && iLen > 0);
const FX_WCHAR* pStart = psz;
const FX_WCHAR* pEnd = psz + iLen;
for (; psz < pEnd; ++psz) {
switch (*psz) {
case '>':
case '[':
case '+':
return NULL;
}
}
CFDE_CSSSelector *pFirst = NULL, *pLast = NULL;
CFDE_CSSSelector *pPersudoFirst = NULL, *pPersudoLast = NULL;
for (psz = pStart; psz < pEnd;) {
FX_WCHAR wch = *psz;
if (wch == '.' || wch == '#') {
if (psz == pStart || psz[-1] == ' ') {
CFDE_CSSSelector* p = FDE_NewWith(pStaticStore)
CFDE_CSSSelector(FDE_CSSSELECTORTYPE_Element, L"*", 1, TRUE);
if (p == NULL) {
return NULL;
}
if (pFirst != NULL) {
pFirst->SetType(FDE_CSSSELECTORTYPE_Descendant);
p->SetNext(pFirst);
}
pFirst = pLast = p;
}
FXSYS_assert(pLast != NULL);
int32_t iNameLen = FDE_GetCSSNameLen(++psz, pEnd);
if (iNameLen == 0) {
return NULL;
}
FDE_CSSSELECTORTYPE eType =
wch == '.' ? FDE_CSSSELECTORTYPE_Class : FDE_CSSSELECTORTYPE_ID;
CFDE_CSSSelector* p = FDE_NewWith(pStaticStore)
CFDE_CSSSelector(eType, psz, iNameLen, FALSE);
if (p == NULL) {
return NULL;
}
p->SetNext(pLast->GetNextSelector());
pLast->SetNext(p);
pLast = p;
psz += iNameLen;
} else if (FDE_IsCSSChar(wch) || wch == '*') {
int32_t iNameLen = wch == '*' ? 1 : FDE_GetCSSNameLen(psz, pEnd);
if (iNameLen == 0) {
return NULL;
}
CFDE_CSSSelector* p = FDE_NewWith(pStaticStore)
CFDE_CSSSelector(FDE_CSSSELECTORTYPE_Element, psz, iNameLen, TRUE);
if (p == NULL) {
return NULL;
}
if (pFirst == NULL) {
pFirst = pLast = p;
} else {
pFirst->SetType(FDE_CSSSELECTORTYPE_Descendant);
p->SetNext(pFirst);
pFirst = pLast = p;
}
psz += iNameLen;
} else if (wch == ':') {
int32_t iNameLen = FDE_GetCSSPersudoLen(psz, pEnd);
if (iNameLen == 0) {
return NULL;
}
CFDE_CSSSelector* p = FDE_NewWith(pStaticStore)
CFDE_CSSSelector(FDE_CSSSELECTORTYPE_Persudo, psz, iNameLen, TRUE);
if (p == NULL) {
return NULL;
}
if (pPersudoFirst == NULL) {
pPersudoFirst = pPersudoLast = p;
} else {
pPersudoLast->SetNext(p);
pPersudoLast = p;
}
psz += iNameLen;
} else if (wch == ' ') {
psz++;
} else {
return NULL;
}
}
if (pPersudoFirst == NULL) {
return pFirst;
} else {
pPersudoLast->SetNext(pFirst);
return pPersudoFirst;
}
}
CFDE_CSSSelector* CFDE_CSSSelector::FromString(
IFX_MemoryAllocator* pStaticStore,
const FX_WCHAR* psz,
int32_t iLen) {
ASSERT(pStaticStore && psz && iLen > 0);
const FX_WCHAR* pStart = psz;
const FX_WCHAR* pEnd = psz + iLen;
for (; psz < pEnd; ++psz) {
switch (*psz) {
case '>':
case '[':
case '+':
return nullptr;
}
}
CFDE_CSSSelector* pFirst = nullptr;
CFDE_CSSSelector* pLast = nullptr;
CFDE_CSSSelector* pPersudoFirst = nullptr;
CFDE_CSSSelector* pPersudoLast = nullptr;
for (psz = pStart; psz < pEnd;) {
FX_WCHAR wch = *psz;
if (wch == '.' || wch == '#') {
if (psz == pStart || psz[-1] == ' ') {
CFDE_CSSSelector* p = FXTARGET_NewWith(pStaticStore)
CFDE_CSSSelector(FDE_CSSSELECTORTYPE_Element, L"*", 1, true);
if (!p)
return nullptr;
if (pFirst) {
pFirst->SetType(FDE_CSSSELECTORTYPE_Descendant);
p->SetNext(pFirst);
}
pFirst = pLast = p;
}
ASSERT(pLast);
int32_t iNameLen = FDE_GetCSSNameLen(++psz, pEnd);
if (iNameLen == 0) {
return nullptr;
}
FDE_CSSSELECTORTYPE eType =
wch == '.' ? FDE_CSSSELECTORTYPE_Class : FDE_CSSSELECTORTYPE_ID;
CFDE_CSSSelector* p = FXTARGET_NewWith(pStaticStore)
CFDE_CSSSelector(eType, psz, iNameLen, false);
if (!p)
return nullptr;
p->SetNext(pLast->GetNextSelector());
pLast->SetNext(p);
pLast = p;
psz += iNameLen;
} else if (FDE_IsCSSChar(wch) || wch == '*') {
int32_t iNameLen = wch == '*' ? 1 : FDE_GetCSSNameLen(psz, pEnd);
if (iNameLen == 0) {
return nullptr;
}
CFDE_CSSSelector* p = FXTARGET_NewWith(pStaticStore)
CFDE_CSSSelector(FDE_CSSSELECTORTYPE_Element, psz, iNameLen, true);
if (!p)
return nullptr;
if (pFirst) {
pFirst->SetType(FDE_CSSSELECTORTYPE_Descendant);
p->SetNext(pFirst);
}
pFirst = p;
pLast = p;
psz += iNameLen;
} else if (wch == ':') {
int32_t iNameLen = FDE_GetCSSPersudoLen(psz, pEnd);
if (iNameLen == 0) {
return nullptr;
}
CFDE_CSSSelector* p = FXTARGET_NewWith(pStaticStore)
CFDE_CSSSelector(FDE_CSSSELECTORTYPE_Persudo, psz, iNameLen, true);
if (!p)
return nullptr;
if (pPersudoFirst)
pPersudoLast->SetNext(p);
else
pPersudoFirst = p;
pPersudoLast = p;
psz += iNameLen;
} else if (wch == ' ') {
psz++;
} else {
return nullptr;
}
}
if (!pPersudoFirst)
return pFirst;
pPersudoLast->SetNext(pFirst);
return pPersudoFirst;
}