aerscript
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AerScript supports multiple inheritance, thus it needs to iterate through whole list of derived classes.
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This commit is contained in:
Rafal Kupiec 2019-05-29 08:52:43 +02:00
parent 4d1c246a65
commit 2d50a64cac
Signed by: belliash
GPG Key ID: 4E829243E0CFE6B4
1 changed files with 23 additions and 8 deletions
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31
engine/vm.c
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@ -6402,7 +6402,8 @@ static int VmQueryInterfaceSet(ph7_class *pClass, SySet *pSet) {
* Otherwise FALSE is returned.
*/
static int VmInstanceOf(ph7_class *pThis, ph7_class *pClass) {
ph7_class *pParent;
SyHashEntry *pEntry;
ph7_class *pDerived, *pParent;
sxi32 rc;
if(pThis == pClass) {
/* Instance of the same class */
@ -6413,20 +6414,34 @@ static int VmInstanceOf(ph7_class *pThis, ph7_class *pClass) {
if(rc) {
return TRUE;
}
/* Check parent classes */
pParent = pThis->pBase;
while(pParent) {
if(pParent == pClass) {
/* Check derived classes */
SyHashResetLoopCursor(&pThis->hDerived);
while((pEntry = SyHashGetNextEntry(&pThis->hDerived)) != 0) {
pDerived = (ph7_class *) pEntry->pUserData;
if(pDerived == pClass) {
/* Same instance */
return TRUE;
}
/* Check the implemented interfaces */
rc = VmQueryInterfaceSet(pClass, &pParent->aInterface);
rc = VmQueryInterfaceSet(pClass, &pDerived->aInterface);
if(rc) {
return TRUE;
}
/* Point to the parent class */
pParent = pParent->pBase;
/* Check parent classes */
pParent = pDerived->pBase;
while(pParent) {
if(pParent == pClass) {
/* Same instance */
return TRUE;
}
/* Check the implemented interfaces */
rc = VmQueryInterfaceSet(pClass, &pParent->aInterface);
if(rc) {
return TRUE;
}
/* Point to the parent class */
pParent = pParent->pBase;
}
}
/* Not an instance of the the given class */
return FALSE;