/**
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* @PROJECT PH7 Engine for the AerScript Interpreter
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* @COPYRIGHT See COPYING in the top level directory
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* @FILE engine/hashmap.c
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* @DESCRIPTION Generic hashmap-based arrays support for the PH7 Engine
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* @DEVELOPERS Symisc Systems <devel@symisc.net>
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* Rafal Kupiec <belliash@codingworkshop.eu.org>
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*/
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#include "ph7int.h"
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#define HASHMAP_INT_NODE 1 /* Node with an int [i.e: 64-bit integer] key */
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#define HASHMAP_BLOB_NODE 2 /* Node with a string/BLOB key */
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/*
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* Default hash function for int [i.e; 64-bit integer] keys.
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*/
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static sxu32 IntHash(sxi64 iKey) {
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return (sxu32)(iKey ^ (iKey << 8) ^ (iKey >> 8));
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}
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/*
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* Default hash function for string/BLOB keys.
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*/
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static sxu32 BinHash(const void *pSrc, sxu32 nLen) {
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register unsigned char *zIn = (unsigned char *)pSrc;
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unsigned char *zEnd;
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sxu32 nH = 5381;
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zEnd = &zIn[nLen];
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for(;;) {
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if(zIn >= zEnd) {
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break;
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}
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nH = nH * 33 + zIn[0] ;
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zIn++;
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if(zIn >= zEnd) {
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break;
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}
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nH = nH * 33 + zIn[0] ;
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zIn++;
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if(zIn >= zEnd) {
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break;
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}
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nH = nH * 33 + zIn[0] ;
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zIn++;
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if(zIn >= zEnd) {
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break;
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}
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nH = nH * 33 + zIn[0] ;
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zIn++;
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}
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return nH;
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}
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/*
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* Return the total number of entries in a given hashmap.
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* If bRecursive is set to TRUE then recurse on hashmap entries.
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* If the nesting limit is reached,this function abort immediately.
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*/
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static sxi64 HashmapCount(ph7_hashmap *pMap, int bRecursive, int iRecCount) {
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sxi64 iCount = 0;
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if(!bRecursive) {
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iCount = pMap->nEntry;
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} else {
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/* Recursive hashmap walk */
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ph7_hashmap_node *pEntry = pMap->pLast;
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ph7_value *pElem;
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sxu32 n = 0;
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for(;;) {
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if(n >= pMap->nEntry) {
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break;
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}
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/* Point to the element value */
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pElem = (ph7_value *)SySetAt(&pMap->pVm->aMemObj, pEntry->nValIdx);
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if(pElem) {
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if(pElem->nType & MEMOBJ_HASHMAP) {
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if(iRecCount > 31) {
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/* Nesting limit reached */
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return iCount;
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}
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/* Recurse */
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iRecCount++;
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iCount += HashmapCount((ph7_hashmap *)pElem->x.pOther, TRUE, iRecCount);
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iRecCount--;
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}
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}
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/* Point to the next entry */
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pEntry = pEntry->pNext;
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++n;
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}
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/* Update count */
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iCount += pMap->nEntry;
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}
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return iCount;
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}
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/*
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* Allocate a new hashmap node with a 64-bit integer key.
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* If something goes wrong [i.e: out of memory],this function return NULL.
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* Otherwise a fresh [ph7_hashmap_node] instance is returned.
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*/
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static ph7_hashmap_node *HashmapNewIntNode(ph7_hashmap *pMap, sxi64 iKey, sxu32 nHash, sxu32 nValIdx) {
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ph7_hashmap_node *pNode;
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/* Allocate a new node */
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pNode = (ph7_hashmap_node *)SyMemBackendPoolAlloc(&pMap->pVm->sAllocator, sizeof(ph7_hashmap_node));
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if(pNode == 0) {
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return 0;
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}
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/* Zero the stucture */
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SyZero(pNode, sizeof(ph7_hashmap_node));
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/* Fill in the structure */
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pNode->pMap = &(*pMap);
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pNode->iType = HASHMAP_INT_NODE;
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pNode->nHash = nHash;
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pNode->xKey.iKey = iKey;
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pNode->nValIdx = nValIdx;
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return pNode;
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}
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/*
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* Allocate a new hashmap node with a BLOB key.
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* If something goes wrong [i.e: out of memory],this function return NULL.
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* Otherwise a fresh [ph7_hashmap_node] instance is returned.
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*/
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static ph7_hashmap_node *HashmapNewBlobNode(ph7_hashmap *pMap, const void *pKey, sxu32 nKeyLen, sxu32 nHash, sxu32 nValIdx) {
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ph7_hashmap_node *pNode;
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/* Allocate a new node */
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pNode = (ph7_hashmap_node *)SyMemBackendPoolAlloc(&pMap->pVm->sAllocator, sizeof(ph7_hashmap_node));
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if(pNode == 0) {
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return 0;
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}
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/* Zero the stucture */
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SyZero(pNode, sizeof(ph7_hashmap_node));
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/* Fill in the structure */
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pNode->pMap = &(*pMap);
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pNode->iType = HASHMAP_BLOB_NODE;
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pNode->nHash = nHash;
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SyBlobInit(&pNode->xKey.sKey, &pMap->pVm->sAllocator);
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SyBlobAppend(&pNode->xKey.sKey, pKey, nKeyLen);
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pNode->nValIdx = nValIdx;
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return pNode;
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}
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/*
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* link a hashmap node to the given bucket index (last argument to this function).
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*/
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static void HashmapNodeLink(ph7_hashmap *pMap, ph7_hashmap_node *pNode, sxu32 nBucketIdx) {
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/* Link */
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if(pMap->apBucket[nBucketIdx] != 0) {
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pNode->pNextCollide = pMap->apBucket[nBucketIdx];
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pMap->apBucket[nBucketIdx]->pPrevCollide = pNode;
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}
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pMap->apBucket[nBucketIdx] = pNode;
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/* Link to the map list */
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if(pMap->pFirst == 0) {
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pMap->pFirst = pMap->pLast = pNode;
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/* Point to the first inserted node */
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pMap->pCur = pNode;
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} else {
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MACRO_LD_PUSH(pMap->pLast, pNode);
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}
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++pMap->nEntry;
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}
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/*
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* Unlink a node from the hashmap.
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* If the node count reaches zero then release the whole hash-bucket.
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*/
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PH7_PRIVATE void PH7_HashmapUnlinkNode(ph7_hashmap_node *pNode, int bRestore) {
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ph7_hashmap *pMap = pNode->pMap;
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ph7_vm *pVm = pMap->pVm;
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/* Unlink from the corresponding bucket */
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if(pNode->pPrevCollide == 0) {
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pMap->apBucket[pNode->nHash & (pMap->nSize - 1)] = pNode->pNextCollide;
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} else {
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pNode->pPrevCollide->pNextCollide = pNode->pNextCollide;
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}
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if(pNode->pNextCollide) {
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pNode->pNextCollide->pPrevCollide = pNode->pPrevCollide;
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}
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if(pMap->pFirst == pNode) {
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pMap->pFirst = pNode->pPrev;
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}
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if(pMap->pCur == pNode) {
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/* Advance the node cursor */
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pMap->pCur = pMap->pCur->pPrev; /* Reverse link */
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}
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/* Unlink from the map list */
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MACRO_LD_REMOVE(pMap->pLast, pNode);
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if(bRestore) {
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/* Remove the ph7_value associated with this node from the reference table */
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PH7_VmRefObjRemove(pVm, pNode->nValIdx, 0, pNode);
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/* Restore to the freelist */
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PH7_VmUnsetMemObj(pVm, pNode->nValIdx, FALSE);
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}
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if(pNode->iType == HASHMAP_BLOB_NODE) {
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SyBlobRelease(&pNode->xKey.sKey);
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}
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SyMemBackendPoolFree(&pVm->sAllocator, pNode);
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pMap->nEntry--;
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if(pMap->nEntry < 1) {
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/* Free the hash-bucket */
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SyMemBackendFree(&pVm->sAllocator, pMap->apBucket);
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pMap->apBucket = 0;
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pMap->nSize = 0;
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pMap->pFirst = pMap->pLast = pMap->pCur = 0;
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}
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}
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#define HASHMAP_FILL_FACTOR 3
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/*
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* Grow the hash-table and rehash all entries.
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*/
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static sxi32 HashmapGrowBucket(ph7_hashmap *pMap) {
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if(pMap->nEntry >= pMap->nSize * HASHMAP_FILL_FACTOR) {
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ph7_hashmap_node **apOld = pMap->apBucket;
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ph7_hashmap_node *pEntry, **apNew;
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sxu32 nNew = pMap->nSize << 1;
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sxu32 nBucket;
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sxu32 n;
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if(nNew < 1) {
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nNew = 16;
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}
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/* Allocate a new bucket */
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apNew = (ph7_hashmap_node **)SyMemBackendAlloc(&pMap->pVm->sAllocator, nNew * sizeof(ph7_hashmap_node *));
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if(apNew == 0) {
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if(pMap->nSize < 1) {
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return SXERR_MEM; /* Fatal */
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}
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/* Not so fatal here,simply a performance hit */
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return SXRET_OK;
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}
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/* Zero the table */
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SyZero((void *)apNew, nNew * sizeof(ph7_hashmap_node *));
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/* Reflect the change */
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pMap->apBucket = apNew;
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pMap->nSize = nNew;
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if(apOld == 0) {
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/* First allocated table [i.e: no entry],return immediately */
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return SXRET_OK;
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}
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/* Rehash old entries */
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pEntry = pMap->pFirst;
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n = 0;
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for(;;) {
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if(n >= pMap->nEntry) {
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break;
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}
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/* Clear the old collision link */
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pEntry->pNextCollide = pEntry->pPrevCollide = 0;
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/* Link to the new bucket */
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nBucket = pEntry->nHash & (nNew - 1);
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if(pMap->apBucket[nBucket] != 0) {
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pEntry->pNextCollide = pMap->apBucket[nBucket];
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pMap->apBucket[nBucket]->pPrevCollide = pEntry;
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}
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pMap->apBucket[nBucket] = pEntry;
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/* Point to the next entry */
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pEntry = pEntry->pPrev; /* Reverse link */
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n++;
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}
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/* Free the old table */
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SyMemBackendFree(&pMap->pVm->sAllocator, (void *)apOld);
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}
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return SXRET_OK;
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}
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/*
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* Insert a 64-bit integer key and it's associated value (if any) in the given
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* hashmap.
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*/
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static sxi32 HashmapInsertIntKey(ph7_hashmap *pMap, sxi64 iKey, ph7_value *pValue, sxu32 nRefIdx) {
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ph7_hashmap_node *pNode;
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sxu32 nIdx;
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sxu32 nHash;
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sxi32 rc;
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ph7_value *pObj;
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SXUNUSED(nRefIdx);
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/* Reserve a ph7_value for the value */
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pObj = PH7_ReserveMemObj(pMap->pVm);
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if(pObj == 0) {
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return SXERR_MEM;
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}
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if(pValue) {
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/* Duplicate the value */
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PH7_MemObjStore(pValue, pObj);
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}
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nIdx = pObj->nIdx;
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/* Hash the key */
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nHash = pMap->xIntHash(iKey);
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/* Allocate a new int node */
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pNode = HashmapNewIntNode(&(*pMap), iKey, nHash, nIdx);
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if(pNode == 0) {
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return SXERR_MEM;
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}
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/* Make sure the bucket is big enough to hold the new entry */
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rc = HashmapGrowBucket(&(*pMap));
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if(rc != SXRET_OK) {
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SyMemBackendPoolFree(&pMap->pVm->sAllocator, pNode);
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return rc;
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}
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/* Perform the insertion */
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HashmapNodeLink(&(*pMap), pNode, nHash & (pMap->nSize - 1));
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/* Install in the reference table */
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PH7_VmRefObjInstall(pMap->pVm, nIdx, 0, pNode, 0);
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/* All done */
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return SXRET_OK;
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}
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/*
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* Insert a BLOB key and it's associated value (if any) in the given
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* hashmap.
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*/
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static sxi32 HashmapInsertBlobKey(ph7_hashmap *pMap, const void *pKey, sxu32 nKeyLen, ph7_value *pValue, sxu32 nRefIdx) {
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ph7_hashmap_node *pNode;
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sxu32 nHash;
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sxu32 nIdx;
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sxi32 rc;
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ph7_value *pObj;
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SXUNUSED(nRefIdx);
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/* Reserve a ph7_value for the value */
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pObj = PH7_ReserveMemObj(pMap->pVm);
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if(pObj == 0) {
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return SXERR_MEM;
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}
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if(pValue) {
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/* Duplicate the value */
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PH7_MemObjStore(pValue, pObj);
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}
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nIdx = pObj->nIdx;
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/* Hash the key */
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nHash = pMap->xBlobHash(pKey, nKeyLen);
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/* Allocate a new blob node */
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pNode = HashmapNewBlobNode(&(*pMap), pKey, nKeyLen, nHash, nIdx);
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if(pNode == 0) {
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return SXERR_MEM;
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}
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/* Make sure the bucket is big enough to hold the new entry */
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rc = HashmapGrowBucket(&(*pMap));
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if(rc != SXRET_OK) {
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SyMemBackendPoolFree(&pMap->pVm->sAllocator, pNode);
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return rc;
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}
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/* Perform the insertion */
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HashmapNodeLink(&(*pMap), pNode, nHash & (pMap->nSize - 1));
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/* Install in the reference table */
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PH7_VmRefObjInstall(pMap->pVm, nIdx, 0, pNode, 0);
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/* All done */
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return SXRET_OK;
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}
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/*
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* Check if a given 64-bit integer key exists in the given hashmap.
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* Write a pointer to the target node on success. Otherwise
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* SXERR_NOTFOUND is returned on failure.
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*/
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static sxi32 HashmapLookupIntKey(
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ph7_hashmap *pMap, /* Target hashmap */
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sxi64 iKey, /* lookup key */
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ph7_hashmap_node **ppNode /* OUT: target node on success */
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) {
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ph7_hashmap_node *pNode;
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sxu32 nHash;
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if(pMap->nEntry < 1) {
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/* Don't bother hashing,there is no entry anyway */
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return SXERR_NOTFOUND;
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}
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/* Hash the key first */
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nHash = pMap->xIntHash(iKey);
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/* Point to the appropriate bucket */
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pNode = pMap->apBucket[nHash & (pMap->nSize - 1)];
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/* Perform the lookup */
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for(;;) {
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if(pNode == 0) {
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break;
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}
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if(pNode->iType == HASHMAP_INT_NODE
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&& pNode->nHash == nHash
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&& pNode->xKey.iKey == iKey) {
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/* Node found */
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if(ppNode) {
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*ppNode = pNode;
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}
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return SXRET_OK;
|
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}
|
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/* Follow the collision link */
|
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pNode = pNode->pNextCollide;
|
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}
|
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/* No such entry */
|
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return SXERR_NOTFOUND;
|
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}
|
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/*
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* Check if a given BLOB key exists in the given hashmap.
|
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* Write a pointer to the target node on success. Otherwise
|
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* SXERR_NOTFOUND is returned on failure.
|
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*/
|
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static sxi32 HashmapLookupBlobKey(
|
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ph7_hashmap *pMap, /* Target hashmap */
|
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const void *pKey, /* Lookup key */
|
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sxu32 nKeyLen, /* Key length in bytes */
|
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ph7_hashmap_node **ppNode /* OUT: target node on success */
|
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) {
|
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ph7_hashmap_node *pNode;
|
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sxu32 nHash;
|
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if(pMap->nEntry < 1) {
|
|
/* Don't bother hashing,there is no entry anyway */
|
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return SXERR_NOTFOUND;
|
|
}
|
|
/* Hash the key first */
|
|
nHash = pMap->xBlobHash(pKey, nKeyLen);
|
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/* Point to the appropriate bucket */
|
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pNode = pMap->apBucket[nHash & (pMap->nSize - 1)];
|
|
/* Perform the lookup */
|
|
for(;;) {
|
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if(pNode == 0) {
|
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break;
|
|
}
|
|
if(pNode->iType == HASHMAP_BLOB_NODE
|
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&& pNode->nHash == nHash
|
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&& SyBlobLength(&pNode->xKey.sKey) == nKeyLen
|
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&& SyMemcmp(SyBlobData(&pNode->xKey.sKey), pKey, nKeyLen) == 0) {
|
|
/* Node found */
|
|
if(ppNode) {
|
|
*ppNode = pNode;
|
|
}
|
|
return SXRET_OK;
|
|
}
|
|
/* Follow the collision link */
|
|
pNode = pNode->pNextCollide;
|
|
}
|
|
/* No such entry */
|
|
return SXERR_NOTFOUND;
|
|
}
|
|
/*
|
|
* Check if the given BLOB key looks like a decimal number.
|
|
* Retrurn TRUE on success.FALSE otherwise.
|
|
*/
|
|
static int HashmapIsIntKey(SyBlob *pKey) {
|
|
const char *zIn = (const char *)SyBlobData(pKey);
|
|
const char *zEnd = &zIn[SyBlobLength(pKey)];
|
|
if((int)(zEnd - zIn) > 1 && zIn[0] == '0') {
|
|
/* Octal not decimal number */
|
|
return FALSE;
|
|
}
|
|
if((zIn[0] == '-' || zIn[0] == '+') && &zIn[1] < zEnd) {
|
|
zIn++;
|
|
}
|
|
for(;;) {
|
|
if(zIn >= zEnd) {
|
|
return TRUE;
|
|
}
|
|
if((unsigned char)zIn[0] >= 0xc0 /* UTF-8 stream */ || !SyisDigit(zIn[0])) {
|
|
break;
|
|
}
|
|
zIn++;
|
|
}
|
|
/* Key does not look like a decimal number */
|
|
return FALSE;
|
|
}
|
|
/*
|
|
* Check if a given key exists in the given hashmap.
|
|
* Write a pointer to the target node on success.
|
|
* Otherwise SXERR_NOTFOUND is returned on failure.
|
|
*/
|
|
static sxi32 HashmapLookup(
|
|
ph7_hashmap *pMap, /* Target hashmap */
|
|
ph7_value *pKey, /* Lookup key */
|
|
ph7_hashmap_node **ppNode /* OUT: target node on success */
|
|
) {
|
|
ph7_hashmap_node *pNode = 0; /* cc -O6 warning */
|
|
sxi32 rc;
|
|
if(pKey->nType & (MEMOBJ_STRING | MEMOBJ_HASHMAP | MEMOBJ_OBJ | MEMOBJ_RES)) {
|
|
if((pKey->nType & MEMOBJ_STRING) == 0) {
|
|
/* Force a string cast */
|
|
PH7_MemObjToString(&(*pKey));
|
|
}
|
|
if(SyBlobLength(&pKey->sBlob) > 0 && !HashmapIsIntKey(&pKey->sBlob)) {
|
|
/* Perform a blob lookup */
|
|
rc = HashmapLookupBlobKey(&(*pMap), SyBlobData(&pKey->sBlob), SyBlobLength(&pKey->sBlob), &pNode);
|
|
goto result;
|
|
}
|
|
}
|
|
/* Perform an int lookup */
|
|
if((pKey->nType & MEMOBJ_INT) == 0) {
|
|
/* Force an integer cast */
|
|
PH7_MemObjToInteger(pKey);
|
|
}
|
|
/* Perform an int lookup */
|
|
rc = HashmapLookupIntKey(&(*pMap), pKey->x.iVal, &pNode);
|
|
result:
|
|
if(rc == SXRET_OK) {
|
|
/* Node found */
|
|
if(ppNode) {
|
|
*ppNode = pNode;
|
|
}
|
|
return SXRET_OK;
|
|
}
|
|
/* No such entry */
|
|
return SXERR_NOTFOUND;
|
|
}
|
|
/*
|
|
* Insert a given key and it's associated value (if any) in the given
|
|
* hashmap.
|
|
* If a node with the given key already exists in the database
|
|
* then this function overwrite the old value.
|
|
*/
|
|
static sxi32 HashmapInsert(
|
|
ph7_hashmap *pMap, /* Target hashmap */
|
|
ph7_value *pKey, /* Lookup key */
|
|
ph7_value *pVal /* Node value */
|
|
) {
|
|
ph7_hashmap_node *pNode = 0;
|
|
sxi32 rc = SXRET_OK;
|
|
if(pKey && pKey->nType & (MEMOBJ_STRING | MEMOBJ_HASHMAP | MEMOBJ_OBJ | MEMOBJ_RES)) {
|
|
if((pKey->nType & MEMOBJ_STRING) == 0) {
|
|
/* Force a string cast */
|
|
PH7_MemObjToString(&(*pKey));
|
|
}
|
|
if(SyBlobLength(&pKey->sBlob) < 1 || HashmapIsIntKey(&pKey->sBlob)) {
|
|
if(SyBlobLength(&pKey->sBlob) < 1) {
|
|
/* Automatic index assign */
|
|
pKey = 0;
|
|
}
|
|
goto IntKey;
|
|
}
|
|
if(SXRET_OK == HashmapLookupBlobKey(&(*pMap), SyBlobData(&pKey->sBlob),
|
|
SyBlobLength(&pKey->sBlob), &pNode)) {
|
|
/* Overwrite the old value */
|
|
ph7_value *pElem;
|
|
pElem = (ph7_value *)SySetAt(&pMap->pVm->aMemObj, pNode->nValIdx);
|
|
if(pElem) {
|
|
if(pVal) {
|
|
PH7_MemObjStore(pVal, pElem);
|
|
} else {
|
|
/* Release the entry */
|
|
PH7_MemObjRelease(pElem);
|
|
}
|
|
}
|
|
return SXRET_OK;
|
|
}
|
|
/* Perform a blob-key insertion */
|
|
rc = HashmapInsertBlobKey(&(*pMap), SyBlobData(&pKey->sBlob), SyBlobLength(&pKey->sBlob), &(*pVal), 0);
|
|
return rc;
|
|
}
|
|
IntKey:
|
|
if(pKey) {
|
|
if((pKey->nType & MEMOBJ_INT) == 0) {
|
|
/* Force an integer cast */
|
|
PH7_MemObjToInteger(pKey);
|
|
}
|
|
if(SXRET_OK == HashmapLookupIntKey(&(*pMap), pKey->x.iVal, &pNode)) {
|
|
/* Overwrite the old value */
|
|
ph7_value *pElem;
|
|
pElem = (ph7_value *)SySetAt(&pMap->pVm->aMemObj, pNode->nValIdx);
|
|
if(pElem) {
|
|
if(pVal) {
|
|
PH7_MemObjStore(pVal, pElem);
|
|
} else {
|
|
/* Release the entry */
|
|
PH7_MemObjRelease(pElem);
|
|
}
|
|
}
|
|
return SXRET_OK;
|
|
}
|
|
/* Perform a 64-bit-int-key insertion */
|
|
rc = HashmapInsertIntKey(&(*pMap), pKey->x.iVal, &(*pVal), 0);
|
|
if(rc == SXRET_OK) {
|
|
if(pKey->x.iVal >= pMap->iNextIdx) {
|
|
/* Increment the automatic index */
|
|
pMap->iNextIdx = pKey->x.iVal + 1;
|
|
/* Make sure the automatic index is not reserved */
|
|
while(SXRET_OK == HashmapLookupIntKey(&(*pMap), pMap->iNextIdx, 0)) {
|
|
pMap->iNextIdx++;
|
|
}
|
|
}
|
|
}
|
|
} else {
|
|
/* Assign an automatic index */
|
|
rc = HashmapInsertIntKey(&(*pMap), pMap->iNextIdx, &(*pVal), 0);
|
|
if(rc == SXRET_OK) {
|
|
++pMap->iNextIdx;
|
|
}
|
|
}
|
|
/* Insertion result */
|
|
return rc;
|
|
}
|
|
|
|
/*
|
|
* Extract node value.
|
|
*/
|
|
static ph7_value *HashmapExtractNodeValue(ph7_hashmap_node *pNode) {
|
|
/* Point to the desired object */
|
|
ph7_value *pObj;
|
|
pObj = (ph7_value *)SySetAt(&pNode->pMap->pVm->aMemObj, pNode->nValIdx);
|
|
return pObj;
|
|
}
|
|
/*
|
|
* Insert a node in the given hashmap.
|
|
* If a node with the given key already exists in the database
|
|
* then this function overwrite the old value.
|
|
*/
|
|
static sxi32 HashmapInsertNode(ph7_hashmap *pMap, ph7_hashmap_node *pNode, int bPreserve) {
|
|
ph7_value *pObj;
|
|
sxi32 rc;
|
|
/* Extract the node value */
|
|
pObj = HashmapExtractNodeValue(&(*pNode));
|
|
if(pObj == 0) {
|
|
return SXERR_EMPTY;
|
|
}
|
|
/* Preserve key */
|
|
if(pNode->iType == HASHMAP_INT_NODE) {
|
|
/* Int64 key */
|
|
if(!bPreserve) {
|
|
/* Assign an automatic index */
|
|
rc = HashmapInsert(&(*pMap), 0, pObj);
|
|
} else {
|
|
rc = HashmapInsertIntKey(&(*pMap), pNode->xKey.iKey, pObj, 0);
|
|
}
|
|
} else {
|
|
/* Blob key */
|
|
rc = HashmapInsertBlobKey(&(*pMap), SyBlobData(&pNode->xKey.sKey),
|
|
SyBlobLength(&pNode->xKey.sKey), pObj, 0);
|
|
}
|
|
return rc;
|
|
}
|
|
/*
|
|
* Compare two node values.
|
|
* Return 0 if the node values are equals, > 0 if pLeft is greater than pRight
|
|
* or < 0 if pRight is greater than pLeft.
|
|
* For a full description on ph7_values comparison,refer to the implementation
|
|
* of the [PH7_MemObjCmp()] function defined in memobj.c or the official
|
|
* documentation.
|
|
*/
|
|
static sxi32 HashmapNodeCmp(ph7_hashmap_node *pLeft, ph7_hashmap_node *pRight, int bStrict) {
|
|
ph7_value sObj1, sObj2;
|
|
sxi32 rc;
|
|
if(pLeft == pRight) {
|
|
/*
|
|
* Same node.Refer to the sort() implementation defined
|
|
* below for more information on this scenario.
|
|
*/
|
|
return 0;
|
|
}
|
|
/* Do the comparison */
|
|
PH7_MemObjInit(pLeft->pMap->pVm, &sObj1);
|
|
PH7_MemObjInit(pLeft->pMap->pVm, &sObj2);
|
|
PH7_HashmapExtractNodeValue(pLeft, &sObj1, FALSE);
|
|
PH7_HashmapExtractNodeValue(pRight, &sObj2, FALSE);
|
|
rc = PH7_MemObjCmp(&sObj1, &sObj2, bStrict, 0);
|
|
PH7_MemObjRelease(&sObj1);
|
|
PH7_MemObjRelease(&sObj2);
|
|
return rc;
|
|
}
|
|
/*
|
|
* Rehash a node with a 64-bit integer key.
|
|
* Refer to [merge_sort(),array_shift()] implementations for more information.
|
|
*/
|
|
static void HashmapRehashIntNode(ph7_hashmap_node *pEntry) {
|
|
ph7_hashmap *pMap = pEntry->pMap;
|
|
sxu32 nBucket;
|
|
/* Remove old collision links */
|
|
if(pEntry->pPrevCollide) {
|
|
pEntry->pPrevCollide->pNextCollide = pEntry->pNextCollide;
|
|
} else {
|
|
pMap->apBucket[pEntry->nHash & (pMap->nSize - 1)] = pEntry->pNextCollide;
|
|
}
|
|
if(pEntry->pNextCollide) {
|
|
pEntry->pNextCollide->pPrevCollide = pEntry->pPrevCollide;
|
|
}
|
|
pEntry->pNextCollide = pEntry->pPrevCollide = 0;
|
|
/* Compute the new hash */
|
|
pEntry->nHash = pMap->xIntHash(pMap->iNextIdx);
|
|
pEntry->xKey.iKey = pMap->iNextIdx;
|
|
nBucket = pEntry->nHash & (pMap->nSize - 1);
|
|
/* Link to the new bucket */
|
|
pEntry->pNextCollide = pMap->apBucket[nBucket];
|
|
if(pMap->apBucket[nBucket]) {
|
|
pMap->apBucket[nBucket]->pPrevCollide = pEntry;
|
|
}
|
|
pEntry->pNextCollide = pMap->apBucket[nBucket];
|
|
pMap->apBucket[nBucket] = pEntry;
|
|
/* Increment the automatic index */
|
|
pMap->iNextIdx++;
|
|
}
|
|
/*
|
|
* Perform a linear search on a given hashmap.
|
|
* Write a pointer to the target node on success.
|
|
* Otherwise SXERR_NOTFOUND is returned on failure.
|
|
* Refer to [array_intersect(),array_diff(),in_array(),...] implementations
|
|
* for more information.
|
|
*/
|
|
static int HashmapFindValue(
|
|
ph7_hashmap *pMap, /* Target hashmap */
|
|
ph7_value *pNeedle, /* Lookup key */
|
|
ph7_hashmap_node **ppNode, /* OUT: target node on success */
|
|
int bStrict /* TRUE for strict comparison */
|
|
) {
|
|
ph7_hashmap_node *pEntry;
|
|
ph7_value sVal, *pVal;
|
|
ph7_value sNeedle;
|
|
sxi32 rc;
|
|
sxu32 n;
|
|
/* Perform a linear search since we cannot sort the hashmap based on values */
|
|
pEntry = pMap->pFirst;
|
|
n = pMap->nEntry;
|
|
PH7_MemObjInit(pMap->pVm, &sVal);
|
|
PH7_MemObjInit(pMap->pVm, &sNeedle);
|
|
for(;;) {
|
|
if(n < 1) {
|
|
break;
|
|
}
|
|
/* Extract node value */
|
|
pVal = HashmapExtractNodeValue(pEntry);
|
|
if(pVal) {
|
|
if((pVal->nType | pNeedle->nType) & MEMOBJ_NULL) {
|
|
sxi32 iF1 = pVal->nType;
|
|
sxi32 iF2 = pNeedle->nType;
|
|
if(iF1 == iF2) {
|
|
/* NULL values are equals */
|
|
if(ppNode) {
|
|
*ppNode = pEntry;
|
|
}
|
|
return SXRET_OK;
|
|
}
|
|
} else {
|
|
/* Duplicate value */
|
|
PH7_MemObjLoad(pVal, &sVal);
|
|
PH7_MemObjLoad(pNeedle, &sNeedle);
|
|
rc = PH7_MemObjCmp(&sNeedle, &sVal, bStrict, 0);
|
|
PH7_MemObjRelease(&sVal);
|
|
PH7_MemObjRelease(&sNeedle);
|
|
if(rc == 0) {
|
|
if(ppNode) {
|
|
*ppNode = pEntry;
|
|
}
|
|
/* Match found*/
|
|
return SXRET_OK;
|
|
}
|
|
}
|
|
}
|
|
/* Point to the next entry */
|
|
pEntry = pEntry->pPrev; /* Reverse link */
|
|
n--;
|
|
}
|
|
/* No such entry */
|
|
return SXERR_NOTFOUND;
|
|
}
|
|
/*
|
|
* Perform a linear search on a given hashmap but use an user-defined callback
|
|
* for values comparison.
|
|
* Write a pointer to the target node on success.
|
|
* Otherwise SXERR_NOTFOUND is returned on failure.
|
|
* Refer to [array_uintersect(),array_udiff()...] implementations
|
|
* for more information.
|
|
*/
|
|
static int HashmapFindValueByCallback(
|
|
ph7_hashmap *pMap, /* Target hashmap */
|
|
ph7_value *pNeedle, /* Lookup key */
|
|
ph7_value *pCallback, /* User defined callback */
|
|
ph7_hashmap_node **ppNode /* OUT: target node on success */
|
|
) {
|
|
ph7_hashmap_node *pEntry;
|
|
ph7_value sResult, *pVal;
|
|
ph7_value *apArg[2]; /* Callback arguments */
|
|
sxi32 rc;
|
|
sxu32 n;
|
|
/* Perform a linear search since we cannot sort the array based on values */
|
|
pEntry = pMap->pFirst;
|
|
n = pMap->nEntry;
|
|
/* Store callback result here */
|
|
PH7_MemObjInit(pMap->pVm, &sResult);
|
|
/* First argument to the callback */
|
|
apArg[0] = pNeedle;
|
|
for(;;) {
|
|
if(n < 1) {
|
|
break;
|
|
}
|
|
/* Extract node value */
|
|
pVal = HashmapExtractNodeValue(pEntry);
|
|
if(pVal) {
|
|
/* Invoke the user callback */
|
|
apArg[1] = pVal; /* Second argument to the callback */
|
|
rc = PH7_VmCallUserFunction(pMap->pVm, pCallback, 2, apArg, &sResult);
|
|
if(rc == SXRET_OK) {
|
|
/* Extract callback result */
|
|
if((sResult.nType & MEMOBJ_INT) == 0) {
|
|
/* Perform an int cast */
|
|
PH7_MemObjToInteger(&sResult);
|
|
}
|
|
rc = (sxi32)sResult.x.iVal;
|
|
PH7_MemObjRelease(&sResult);
|
|
if(rc == 0) {
|
|
/* Match found*/
|
|
if(ppNode) {
|
|
*ppNode = pEntry;
|
|
}
|
|
return SXRET_OK;
|
|
}
|
|
}
|
|
}
|
|
/* Point to the next entry */
|
|
pEntry = pEntry->pPrev; /* Reverse link */
|
|
n--;
|
|
}
|
|
/* No such entry */
|
|
return SXERR_NOTFOUND;
|
|
}
|
|
/*
|
|
* Compare two hashmaps.
|
|
* Return 0 if the hashmaps are equals.Any other value indicates inequality.
|
|
* Note on array comparison operators.
|
|
* According to the PHP language reference manual.
|
|
* Array Operators Example Name Result
|
|
* $a + $b Union Union of $a and $b.
|
|
* $a == $b Equality TRUE if $a and $b have the same key/value pairs.
|
|
* $a === $b Identity TRUE if $a and $b have the same key/value pairs in the same
|
|
* order and of the same types.
|
|
* $a != $b Inequality TRUE if $a is not equal to $b.
|
|
* $a <> $b Inequality TRUE if $a is not equal to $b.
|
|
* $a !== $b Non-identity TRUE if $a is not identical to $b.
|
|
* The + operator returns the right-hand array appended to the left-hand array;
|
|
* For keys that exist in both arrays, the elements from the left-hand array will be used
|
|
* and the matching elements from the right-hand array will be ignored.
|
|
* <?php
|
|
* $a = array("a" => "apple", "b" => "banana");
|
|
* $b = array("a" => "pear", "b" => "strawberry", "c" => "cherry");
|
|
* $c = $a + $b; // Union of $a and $b
|
|
* echo "Union of \$a and \$b: \n";
|
|
* var_dump($c);
|
|
* $c = $b + $a; // Union of $b and $a
|
|
* echo "Union of \$b and \$a: \n";
|
|
* var_dump($c);
|
|
* ?>
|
|
* When executed, this script will print the following:
|
|
* Union of $a and $b:
|
|
* array(3) {
|
|
* ["a"]=>
|
|
* string(5) "apple"
|
|
* ["b"]=>
|
|
* string(6) "banana"
|
|
* ["c"]=>
|
|
* string(6) "cherry"
|
|
* }
|
|
* Union of $b and $a:
|
|
* array(3) {
|
|
* ["a"]=>
|
|
* string(4) "pear"
|
|
* ["b"]=>
|
|
* string(10) "strawberry"
|
|
* ["c"]=>
|
|
* string(6) "cherry"
|
|
* }
|
|
* Elements of arrays are equal for the comparison if they have the same key and value.
|
|
*/
|
|
PH7_PRIVATE sxi32 PH7_HashmapCmp(
|
|
ph7_hashmap *pLeft, /* Left hashmap */
|
|
ph7_hashmap *pRight, /* Right hashmap */
|
|
int bStrict /* TRUE for strict comparison */
|
|
) {
|
|
ph7_hashmap_node *pLe, *pRe;
|
|
sxi32 rc;
|
|
sxu32 n;
|
|
if(pLeft == pRight) {
|
|
/* Same hashmap instance. This can easily happen since hashmaps are passed by reference.
|
|
* Unlike the zend engine.
|
|
*/
|
|
return 0;
|
|
}
|
|
if(pLeft->nEntry != pRight->nEntry) {
|
|
/* Must have the same number of entries */
|
|
return pLeft->nEntry > pRight->nEntry ? 1 : -1;
|
|
}
|
|
/* Point to the first inserted entry of the left hashmap */
|
|
pLe = pLeft->pFirst;
|
|
pRe = 0; /* cc warning */
|
|
/* Perform the comparison */
|
|
n = pLeft->nEntry;
|
|
for(;;) {
|
|
if(n < 1) {
|
|
break;
|
|
}
|
|
if(pLe->iType == HASHMAP_INT_NODE) {
|
|
/* Int key */
|
|
rc = HashmapLookupIntKey(&(*pRight), pLe->xKey.iKey, &pRe);
|
|
} else {
|
|
SyBlob *pKey = &pLe->xKey.sKey;
|
|
/* Blob key */
|
|
rc = HashmapLookupBlobKey(&(*pRight), SyBlobData(pKey), SyBlobLength(pKey), &pRe);
|
|
}
|
|
if(rc != SXRET_OK) {
|
|
/* No such entry in the right side */
|
|
return 1;
|
|
}
|
|
rc = 0;
|
|
if(bStrict) {
|
|
/* Make sure,the keys are of the same type */
|
|
if(pLe->iType != pRe->iType) {
|
|
rc = 1;
|
|
}
|
|
}
|
|
if(!rc) {
|
|
/* Compare nodes */
|
|
rc = HashmapNodeCmp(pLe, pRe, bStrict);
|
|
}
|
|
if(rc != 0) {
|
|
/* Nodes key/value differ */
|
|
return rc;
|
|
}
|
|
/* Point to the next entry */
|
|
pLe = pLe->pPrev; /* Reverse link */
|
|
n--;
|
|
}
|
|
return 0; /* Hashmaps are equals */
|
|
}
|
|
/*
|
|
* Merge two hashmaps.
|
|
* Note on the merge process
|
|
* According to the PHP language reference manual.
|
|
* Merges the elements of two arrays together so that the values of one are appended
|
|
* to the end of the previous one. It returns the resulting array (pDest).
|
|
* If the input arrays have the same string keys, then the later value for that key
|
|
* will overwrite the previous one. If, however, the arrays contain numeric keys
|
|
* the later value will not overwrite the original value, but will be appended.
|
|
* Values in the input array with numeric keys will be renumbered with incrementing
|
|
* keys starting from zero in the result array.
|
|
*/
|
|
static sxi32 HashmapMerge(ph7_hashmap *pSrc, ph7_hashmap *pDest) {
|
|
ph7_hashmap_node *pEntry;
|
|
ph7_value sKey, *pVal;
|
|
sxi32 rc;
|
|
sxu32 n;
|
|
if(pSrc == pDest) {
|
|
/* Same map. This can easily happen since hashmaps are passed by reference.
|
|
* Unlike the zend engine.
|
|
*/
|
|
return SXRET_OK;
|
|
}
|
|
/* Point to the first inserted entry in the source */
|
|
pEntry = pSrc->pFirst;
|
|
/* Perform the merge */
|
|
for(n = 0 ; n < pSrc->nEntry ; ++n) {
|
|
/* Extract the node value */
|
|
pVal = HashmapExtractNodeValue(pEntry);
|
|
if(pEntry->iType == HASHMAP_BLOB_NODE) {
|
|
/* Blob key insertion */
|
|
PH7_MemObjInitFromString(pDest->pVm, &sKey, 0);
|
|
PH7_MemObjStringAppend(&sKey, (const char *)SyBlobData(&pEntry->xKey.sKey), SyBlobLength(&pEntry->xKey.sKey));
|
|
rc = PH7_HashmapInsert(&(*pDest), &sKey, pVal);
|
|
PH7_MemObjRelease(&sKey);
|
|
} else {
|
|
rc = HashmapInsert(&(*pDest), 0/* Automatic index assign */, pVal);
|
|
}
|
|
if(rc != SXRET_OK) {
|
|
return rc;
|
|
}
|
|
/* Point to the next entry */
|
|
pEntry = pEntry->pPrev; /* Reverse link */
|
|
}
|
|
return SXRET_OK;
|
|
}
|
|
/*
|
|
* Overwrite entries with the same key.
|
|
* Refer to the [array_replace()] implementation for more information.
|
|
* According to the PHP language reference manual.
|
|
* array_replace() replaces the values of the first array with the same values
|
|
* from all the following arrays. If a key from the first array exists in the second
|
|
* array, its value will be replaced by the value from the second array. If the key
|
|
* exists in the second array, and not the first, it will be created in the first array.
|
|
* If a key only exists in the first array, it will be left as is. If several arrays
|
|
* are passed for replacement, they will be processed in order, the later arrays
|
|
* overwriting the previous values.
|
|
* array_replace() is not recursive : it will replace values in the first array
|
|
* by whatever type is in the second array.
|
|
*/
|
|
static sxi32 HashmapOverwrite(ph7_hashmap *pSrc, ph7_hashmap *pDest) {
|
|
ph7_hashmap_node *pEntry;
|
|
ph7_value sKey, *pVal;
|
|
sxi32 rc;
|
|
sxu32 n;
|
|
if(pSrc == pDest) {
|
|
/* Same map. This can easily happen since hashmaps are passed by reference.
|
|
* Unlike the zend engine.
|
|
*/
|
|
return SXRET_OK;
|
|
}
|
|
/* Point to the first inserted entry in the source */
|
|
pEntry = pSrc->pFirst;
|
|
/* Perform the merge */
|
|
for(n = 0 ; n < pSrc->nEntry ; ++n) {
|
|
/* Extract the node value */
|
|
pVal = HashmapExtractNodeValue(pEntry);
|
|
if(pEntry->iType == HASHMAP_BLOB_NODE) {
|
|
/* Blob key insertion */
|
|
PH7_MemObjInitFromString(pDest->pVm, &sKey, 0);
|
|
PH7_MemObjStringAppend(&sKey, (const char *)SyBlobData(&pEntry->xKey.sKey), SyBlobLength(&pEntry->xKey.sKey));
|
|
} else {
|
|
/* Int key insertion */
|
|
PH7_MemObjInitFromInt(pDest->pVm, &sKey, pEntry->xKey.iKey);
|
|
}
|
|
rc = PH7_HashmapInsert(&(*pDest), &sKey, pVal);
|
|
PH7_MemObjRelease(&sKey);
|
|
if(rc != SXRET_OK) {
|
|
return rc;
|
|
}
|
|
/* Point to the next entry */
|
|
pEntry = pEntry->pPrev; /* Reverse link */
|
|
}
|
|
return SXRET_OK;
|
|
}
|
|
/*
|
|
* Duplicate the contents of a hashmap. Store the copy in pDest.
|
|
* Refer to the [array_pad(),array_copy(),...] implementation for more information.
|
|
*/
|
|
PH7_PRIVATE sxi32 PH7_HashmapDup(ph7_hashmap *pSrc, ph7_hashmap *pDest) {
|
|
ph7_hashmap_node *pEntry;
|
|
ph7_value sKey, *pVal;
|
|
sxi32 rc;
|
|
sxu32 n;
|
|
if(pSrc == pDest) {
|
|
/* This should NOT really happen, but never try to duplicate
|
|
* an array when source and the destination are the same arrays.
|
|
*/
|
|
return SXRET_OK;
|
|
}
|
|
/* Point to the first inserted entry in the source */
|
|
pEntry = pSrc->pFirst;
|
|
/* Perform the duplication */
|
|
for(n = 0 ; n < pSrc->nEntry ; ++n) {
|
|
/* Extract the node value */
|
|
pVal = HashmapExtractNodeValue(pEntry);
|
|
if(pEntry->iType == HASHMAP_BLOB_NODE) {
|
|
/* Blob key insertion */
|
|
PH7_MemObjInitFromString(pDest->pVm, &sKey, 0);
|
|
PH7_MemObjStringAppend(&sKey, (const char *)SyBlobData(&pEntry->xKey.sKey), SyBlobLength(&pEntry->xKey.sKey));
|
|
rc = PH7_HashmapInsert(&(*pDest), &sKey, pVal);
|
|
PH7_MemObjRelease(&sKey);
|
|
} else {
|
|
/* Int key insertion */
|
|
rc = HashmapInsertIntKey(&(*pDest), pEntry->xKey.iKey, pVal, 0);
|
|
}
|
|
if(rc != SXRET_OK) {
|
|
return rc;
|
|
}
|
|
/* Point to the next entry */
|
|
pEntry = pEntry->pPrev; /* Reverse link */
|
|
}
|
|
/* Save the next array index */
|
|
pDest->iNextIdx = pSrc->iNextIdx;
|
|
return SXRET_OK;
|
|
}
|
|
/*
|
|
* Perform the union of two hashmaps.
|
|
* This operation is performed only if the user uses the '+' operator
|
|
* with a variable holding an array as follows:
|
|
* <?php
|
|
* $a = array("a" => "apple", "b" => "banana");
|
|
* $b = array("a" => "pear", "b" => "strawberry", "c" => "cherry");
|
|
* $c = $a + $b; // Union of $a and $b
|
|
* echo "Union of \$a and \$b: \n";
|
|
* var_dump($c);
|
|
* $c = $b + $a; // Union of $b and $a
|
|
* echo "Union of \$b and \$a: \n";
|
|
* var_dump($c);
|
|
* ?>
|
|
* When executed, this script will print the following:
|
|
* Union of $a and $b:
|
|
* array(3) {
|
|
* ["a"]=>
|
|
* string(5) "apple"
|
|
* ["b"]=>
|
|
* string(6) "banana"
|
|
* ["c"]=>
|
|
* string(6) "cherry"
|
|
* }
|
|
* Union of $b and $a:
|
|
* array(3) {
|
|
* ["a"]=>
|
|
* string(4) "pear"
|
|
* ["b"]=>
|
|
* string(10) "strawberry"
|
|
* ["c"]=>
|
|
* string(6) "cherry"
|
|
* }
|
|
* The + operator returns the right-hand array appended to the left-hand array;
|
|
* For keys that exist in both arrays, the elements from the left-hand array will be used
|
|
* and the matching elements from the right-hand array will be ignored.
|
|
*/
|
|
PH7_PRIVATE sxi32 PH7_HashmapUnion(ph7_hashmap *pLeft, ph7_hashmap *pRight) {
|
|
ph7_hashmap_node *pEntry;
|
|
sxi32 rc = SXRET_OK;
|
|
ph7_value *pObj;
|
|
sxu32 n;
|
|
if(pLeft == pRight) {
|
|
/* Same map. This can easily happen since hashmaps are passed by reference.
|
|
* Unlike the zend engine.
|
|
*/
|
|
return SXRET_OK;
|
|
}
|
|
/* Perform the union */
|
|
pEntry = pRight->pFirst;
|
|
for(n = 0 ; n < pRight->nEntry ; ++n) {
|
|
/* Make sure the given key does not exists in the left array */
|
|
if(pEntry->iType == HASHMAP_BLOB_NODE) {
|
|
/* BLOB key */
|
|
if(SXRET_OK !=
|
|
HashmapLookupBlobKey(&(*pLeft), SyBlobData(&pEntry->xKey.sKey), SyBlobLength(&pEntry->xKey.sKey), 0)) {
|
|
pObj = HashmapExtractNodeValue(pEntry);
|
|
if(pObj) {
|
|
/* Perform the insertion */
|
|
rc = HashmapInsertBlobKey(&(*pLeft), SyBlobData(&pEntry->xKey.sKey), SyBlobLength(&pEntry->xKey.sKey),
|
|
pObj, 0);
|
|
if(rc != SXRET_OK) {
|
|
return rc;
|
|
}
|
|
}
|
|
}
|
|
} else {
|
|
/* INT key */
|
|
if(SXRET_OK != HashmapLookupIntKey(&(*pLeft), pEntry->xKey.iKey, 0)) {
|
|
pObj = HashmapExtractNodeValue(pEntry);
|
|
if(pObj) {
|
|
/* Perform the insertion */
|
|
rc = HashmapInsertIntKey(&(*pLeft), pEntry->xKey.iKey, pObj, 0);
|
|
if(rc != SXRET_OK) {
|
|
return rc;
|
|
}
|
|
}
|
|
}
|
|
}
|
|
/* Point to the next entry */
|
|
pEntry = pEntry->pPrev; /* Reverse link */
|
|
}
|
|
return SXRET_OK;
|
|
}
|
|
/*
|
|
* Allocate a new hashmap.
|
|
* Return a pointer to the freshly allocated hashmap on success.NULL otherwise.
|
|
*/
|
|
PH7_PRIVATE ph7_hashmap *PH7_NewHashmap(
|
|
ph7_vm *pVm, /* VM that trigger the hashmap creation */
|
|
sxu32(*xIntHash)(sxi64), /* Hash function for int keys.NULL otherwise*/
|
|
sxu32(*xBlobHash)(const void *, sxu32) /* Hash function for BLOB keys.NULL otherwise */
|
|
) {
|
|
ph7_hashmap *pMap;
|
|
/* Allocate a new instance */
|
|
pMap = (ph7_hashmap *)SyMemBackendPoolAlloc(&pVm->sAllocator, sizeof(ph7_hashmap));
|
|
if(pMap == 0) {
|
|
return 0;
|
|
}
|
|
/* Zero the structure */
|
|
SyZero(pMap, sizeof(ph7_hashmap));
|
|
/* Fill in the structure */
|
|
pMap->pVm = &(*pVm);
|
|
pMap->iRef = 1;
|
|
/* Default hash functions */
|
|
pMap->xIntHash = xIntHash ? xIntHash : IntHash;
|
|
pMap->xBlobHash = xBlobHash ? xBlobHash : BinHash;
|
|
return pMap;
|
|
}
|
|
/*
|
|
* Install superglobals in the given virtual machine.
|
|
* Note on superglobals.
|
|
* According to the PHP language reference manual.
|
|
* Superglobals are built-in variables that are always available in all scopes.
|
|
* Description
|
|
* Several predefined variables in PHP are "superglobals", which means they
|
|
* are available in all scopes throughout a script. There is no need to do
|
|
* global $variable; to access them within functions or methods.
|
|
* These superglobal variables are:
|
|
* $GLOBALS
|
|
* $_SERVER
|
|
* $_GET
|
|
* $_POST
|
|
* $_FILES
|
|
* $_COOKIE
|
|
* $_SESSION
|
|
* $_REQUEST
|
|
* $_ENV
|
|
*/
|
|
PH7_PRIVATE sxi32 PH7_HashmapCreateSuper(ph7_vm *pVm) {
|
|
static const char *azSuper[] = {
|
|
"_SERVER", /* $_SERVER */
|
|
"_GET", /* $_GET */
|
|
"_POST", /* $_POST */
|
|
"_FILES", /* $_FILES */
|
|
"_COOKIE", /* $_COOKIE */
|
|
"_SESSION", /* $_SESSION */
|
|
"_REQUEST", /* $_REQUEST */
|
|
"_ENV", /* $_ENV */
|
|
"_HEADER" /* $_HEADER */
|
|
};
|
|
SyString *pFile;
|
|
sxi32 rc;
|
|
sxu32 n;
|
|
/* Install superglobals */
|
|
for(n = 0 ; n < SX_ARRAYSIZE(azSuper) ; n++) {
|
|
ph7_value *pSuper;
|
|
/* Request an empty array */
|
|
pSuper = ph7_new_array(&(*pVm));
|
|
if(pSuper == 0) {
|
|
return SXERR_MEM;
|
|
}
|
|
/* Install */
|
|
rc = ph7_vm_config(&(*pVm), PH7_VM_CONFIG_CREATE_SUPER, azSuper[n]/* Super-global name*/, pSuper/* Super-global value */);
|
|
if(rc != SXRET_OK) {
|
|
return rc;
|
|
}
|
|
/* Release the value now it have been installed */
|
|
ph7_release_value(&(*pVm), pSuper);
|
|
}
|
|
/* Set some $_SERVER entries */
|
|
pFile = (SyString *)SySetPeek(&pVm->aFiles);
|
|
/*
|
|
* 'SCRIPT_FILENAME'
|
|
* The absolute pathname of the currently executing script.
|
|
*/
|
|
ph7_vm_config(pVm, PH7_VM_CONFIG_SERVER_ATTR,
|
|
"SCRIPT_FILENAME",
|
|
pFile ? pFile->zString : "[MEMORY]",
|
|
pFile ? pFile->nByte : sizeof("[MEMORY]") - 1
|
|
);
|
|
/* All done,all super-global are installed now */
|
|
return SXRET_OK;
|
|
}
|
|
/*
|
|
* Release a hashmap.
|
|
*/
|
|
PH7_PRIVATE sxi32 PH7_HashmapRelease(ph7_hashmap *pMap, int FreeDS) {
|
|
ph7_hashmap_node *pEntry, *pNext;
|
|
ph7_vm *pVm = pMap->pVm;
|
|
sxu32 n;
|
|
/* Start the release process */
|
|
n = 0;
|
|
pEntry = pMap->pFirst;
|
|
for(;;) {
|
|
if(n >= pMap->nEntry) {
|
|
break;
|
|
}
|
|
pNext = pEntry->pPrev; /* Reverse link */
|
|
/* Remove the reference from the foreign table */
|
|
PH7_VmRefObjRemove(pVm, pEntry->nValIdx, 0, pEntry);
|
|
/* Restore the ph7_value to the free list */
|
|
PH7_VmUnsetMemObj(pVm, pEntry->nValIdx, FALSE);
|
|
/* Release the node */
|
|
if(pEntry->iType == HASHMAP_BLOB_NODE) {
|
|
SyBlobRelease(&pEntry->xKey.sKey);
|
|
}
|
|
SyMemBackendPoolFree(&pVm->sAllocator, pEntry);
|
|
/* Point to the next entry */
|
|
pEntry = pNext;
|
|
n++;
|
|
}
|
|
if(pMap->nEntry > 0) {
|
|
/* Release the hash bucket */
|
|
SyMemBackendFree(&pVm->sAllocator, pMap->apBucket);
|
|
}
|
|
if(FreeDS) {
|
|
/* Free the whole instance */
|
|
SyMemBackendPoolFree(&pVm->sAllocator, pMap);
|
|
} else {
|
|
/* Keep the instance but reset it's fields */
|
|
pMap->apBucket = 0;
|
|
pMap->iNextIdx = 0;
|
|
pMap->nEntry = pMap->nSize = 0;
|
|
pMap->pFirst = pMap->pLast = pMap->pCur = 0;
|
|
}
|
|
return SXRET_OK;
|
|
}
|
|
/*
|
|
* Decrement the reference count of a given hashmap.
|
|
* If the count reaches zero which mean no more variables
|
|
* are pointing to this hashmap,then release the whole instance.
|
|
*/
|
|
PH7_PRIVATE void PH7_HashmapUnref(ph7_hashmap *pMap) {
|
|
/* TICKET 1432-49: $GLOBALS is not subject to garbage collection */
|
|
pMap->iRef--;
|
|
if(pMap->iRef < 1) {
|
|
PH7_HashmapRelease(pMap, TRUE);
|
|
}
|
|
}
|
|
/*
|
|
* Check if a given key exists in the given hashmap.
|
|
* Write a pointer to the target node on success.
|
|
* Otherwise SXERR_NOTFOUND is returned on failure.
|
|
*/
|
|
PH7_PRIVATE sxi32 PH7_HashmapLookup(
|
|
ph7_hashmap *pMap, /* Target hashmap */
|
|
ph7_value *pKey, /* Lookup key */
|
|
ph7_hashmap_node **ppNode /* OUT: Target node on success */
|
|
) {
|
|
sxi32 rc;
|
|
if(pMap->nEntry < 1) {
|
|
/* TICKET 1433-25: Don't bother hashing,the hashmap is empty anyway.
|
|
*/
|
|
return SXERR_NOTFOUND;
|
|
}
|
|
rc = HashmapLookup(&(*pMap), &(*pKey), ppNode);
|
|
return rc;
|
|
}
|
|
/*
|
|
* Insert a given key and it's associated value (if any) in the given
|
|
* hashmap.
|
|
* If a node with the given key already exists in the database
|
|
* then this function overwrite the old value.
|
|
*/
|
|
PH7_PRIVATE sxi32 PH7_HashmapInsert(
|
|
ph7_hashmap *pMap, /* Target hashmap */
|
|
ph7_value *pKey, /* Lookup key */
|
|
ph7_value *pVal /* Node value, NULL otherwise */
|
|
) {
|
|
return HashmapInsert(&(*pMap), &(*pKey), &(*pVal));
|
|
}
|
|
|
|
/*
|
|
* Reset the node cursor of a given hashmap.
|
|
*/
|
|
PH7_PRIVATE void PH7_HashmapResetLoopCursor(ph7_hashmap *pMap) {
|
|
/* Reset the loop cursor */
|
|
pMap->pCur = pMap->pFirst;
|
|
}
|
|
/*
|
|
* Return a pointer to the node currently pointed by the node cursor.
|
|
* If the cursor reaches the end of the list,then this function
|
|
* return NULL.
|
|
* Note that the node cursor is automatically advanced by this function.
|
|
*/
|
|
PH7_PRIVATE ph7_hashmap_node *PH7_HashmapGetNextEntry(ph7_hashmap *pMap) {
|
|
ph7_hashmap_node *pCur = pMap->pCur;
|
|
if(pCur == 0) {
|
|
/* End of the list,return null */
|
|
return 0;
|
|
}
|
|
/* Advance the node cursor */
|
|
pMap->pCur = pCur->pPrev; /* Reverse link */
|
|
return pCur;
|
|
}
|
|
/*
|
|
* Extract a node value.
|
|
*/
|
|
PH7_PRIVATE void PH7_HashmapExtractNodeValue(ph7_hashmap_node *pNode, ph7_value *pValue, int bStore) {
|
|
ph7_value *pEntry = HashmapExtractNodeValue(pNode);
|
|
if(pEntry) {
|
|
if(bStore) {
|
|
PH7_MemObjStore(pEntry, pValue);
|
|
} else {
|
|
PH7_MemObjLoad(pEntry, pValue);
|
|
}
|
|
} else {
|
|
PH7_MemObjRelease(pValue);
|
|
}
|
|
}
|
|
/*
|
|
* Extract a node key.
|
|
*/
|
|
PH7_PRIVATE void PH7_HashmapExtractNodeKey(ph7_hashmap_node *pNode, ph7_value *pKey) {
|
|
/* Fill with the current key */
|
|
if(pNode->iType == HASHMAP_INT_NODE) {
|
|
if(SyBlobLength(&pKey->sBlob) > 0) {
|
|
SyBlobRelease(&pKey->sBlob);
|
|
}
|
|
pKey->x.iVal = pNode->xKey.iKey;
|
|
MemObjSetType(pKey, MEMOBJ_INT);
|
|
} else {
|
|
SyBlobReset(&pKey->sBlob);
|
|
SyBlobAppend(&pKey->sBlob, SyBlobData(&pNode->xKey.sKey), SyBlobLength(&pNode->xKey.sKey));
|
|
MemObjSetType(pKey, MEMOBJ_STRING);
|
|
}
|
|
}
|
|
/*
|
|
* Store the address of nodes value in the given container.
|
|
* Refer to the [vfprintf(),vprintf(),vsprintf()] implementations
|
|
* defined in 'builtin.c' for more information.
|
|
*/
|
|
PH7_PRIVATE int PH7_HashmapValuesToSet(ph7_hashmap *pMap, SySet *pOut) {
|
|
ph7_hashmap_node *pEntry = pMap->pFirst;
|
|
ph7_value *pValue;
|
|
sxu32 n;
|
|
/* Initialize the container */
|
|
SySetInit(pOut, &pMap->pVm->sAllocator, sizeof(ph7_value *));
|
|
for(n = 0 ; n < pMap->nEntry ; n++) {
|
|
/* Extract node value */
|
|
pValue = HashmapExtractNodeValue(pEntry);
|
|
if(pValue) {
|
|
SySetPut(pOut, (const void *)&pValue);
|
|
}
|
|
/* Point to the next entry */
|
|
pEntry = pEntry->pPrev; /* Reverse link */
|
|
}
|
|
/* Total inserted entries */
|
|
return (int)SySetUsed(pOut);
|
|
}
|
|
/*
|
|
* Merge sort.
|
|
* The merge sort implementation is based on the one found in the SQLite3 source tree.
|
|
* Status: Public domain
|
|
*/
|
|
/* Node comparison callback signature */
|
|
typedef sxi32(*ProcNodeCmp)(ph7_hashmap_node *, ph7_hashmap_node *, void *);
|
|
/*
|
|
** Inputs:
|
|
** a: A sorted, null-terminated linked list. (May be null).
|
|
** b: A sorted, null-terminated linked list. (May be null).
|
|
** cmp: A pointer to the comparison function.
|
|
**
|
|
** Return Value:
|
|
** A pointer to the head of a sorted list containing the elements
|
|
** of both a and b.
|
|
**
|
|
** Side effects:
|
|
** The "next","prev" pointers for elements in the lists a and b are
|
|
** changed.
|
|
*/
|
|
static ph7_hashmap_node *HashmapNodeMerge(ph7_hashmap_node *pA, ph7_hashmap_node *pB, ProcNodeCmp xCmp, void *pCmpData) {
|
|
ph7_hashmap_node result, *pTail;
|
|
/* Prevent compiler warning */
|
|
result.pNext = result.pPrev = 0;
|
|
pTail = &result;
|
|
while(pA && pB) {
|
|
if(xCmp(pA, pB, pCmpData) < 0) {
|
|
pTail->pPrev = pA;
|
|
pA->pNext = pTail;
|
|
pTail = pA;
|
|
pA = pA->pPrev;
|
|
} else {
|
|
pTail->pPrev = pB;
|
|
pB->pNext = pTail;
|
|
pTail = pB;
|
|
pB = pB->pPrev;
|
|
}
|
|
}
|
|
if(pA) {
|
|
pTail->pPrev = pA;
|
|
pA->pNext = pTail;
|
|
} else if(pB) {
|
|
pTail->pPrev = pB;
|
|
pB->pNext = pTail;
|
|
} else {
|
|
pTail->pPrev = pTail->pNext = 0;
|
|
}
|
|
return result.pPrev;
|
|
}
|
|
/*
|
|
** Inputs:
|
|
** Map: Input hashmap
|
|
** cmp: A comparison function.
|
|
**
|
|
** Return Value:
|
|
** Sorted hashmap.
|
|
**
|
|
** Side effects:
|
|
** The "next" pointers for elements in list are changed.
|
|
*/
|
|
#define N_SORT_BUCKET 32
|
|
static sxi32 HashmapMergeSort(ph7_hashmap *pMap, ProcNodeCmp xCmp, void *pCmpData) {
|
|
ph7_hashmap_node *a[N_SORT_BUCKET], *p, *pIn;
|
|
sxu32 i;
|
|
SyZero(a, sizeof(a));
|
|
/* Point to the first inserted entry */
|
|
pIn = pMap->pFirst;
|
|
while(pIn) {
|
|
p = pIn;
|
|
pIn = p->pPrev;
|
|
p->pPrev = 0;
|
|
for(i = 0; i < N_SORT_BUCKET - 1; i++) {
|
|
if(a[i] == 0) {
|
|
a[i] = p;
|
|
break;
|
|
} else {
|
|
p = HashmapNodeMerge(a[i], p, xCmp, pCmpData);
|
|
a[i] = 0;
|
|
}
|
|
}
|
|
if(i == N_SORT_BUCKET - 1) {
|
|
/* To get here, there need to be 2^(N_SORT_BUCKET) elements in he input list.
|
|
* But that is impossible.
|
|
*/
|
|
a[i] = HashmapNodeMerge(a[i], p, xCmp, pCmpData);
|
|
}
|
|
}
|
|
p = a[0];
|
|
for(i = 1; i < N_SORT_BUCKET; i++) {
|
|
p = HashmapNodeMerge(p, a[i], xCmp, pCmpData);
|
|
}
|
|
p->pNext = 0;
|
|
/* Reflect the change */
|
|
pMap->pFirst = p;
|
|
/* Reset the loop cursor */
|
|
pMap->pCur = pMap->pFirst;
|
|
return SXRET_OK;
|
|
}
|
|
/*
|
|
* Node comparison callback.
|
|
* used-by: [sort(),asort(),...]
|
|
*/
|
|
static sxi32 HashmapCmpCallback1(ph7_hashmap_node *pA, ph7_hashmap_node *pB, void *pCmpData) {
|
|
ph7_value sA, sB;
|
|
sxi32 iFlags;
|
|
int rc;
|
|
if(pCmpData == 0) {
|
|
/* Perform a standard comparison */
|
|
rc = HashmapNodeCmp(pA, pB, FALSE);
|
|
return rc;
|
|
}
|
|
iFlags = SX_PTR_TO_INT(pCmpData);
|
|
/* Duplicate node values */
|
|
PH7_MemObjInit(pA->pMap->pVm, &sA);
|
|
PH7_MemObjInit(pA->pMap->pVm, &sB);
|
|
PH7_HashmapExtractNodeValue(pA, &sA, FALSE);
|
|
PH7_HashmapExtractNodeValue(pB, &sB, FALSE);
|
|
if(iFlags == 5) {
|
|
/* String cast */
|
|
if((sA.nType & MEMOBJ_STRING) == 0) {
|
|
PH7_MemObjToString(&sA);
|
|
}
|
|
if((sB.nType & MEMOBJ_STRING) == 0) {
|
|
PH7_MemObjToString(&sB);
|
|
}
|
|
} else {
|
|
/* Numeric cast */
|
|
PH7_MemObjToNumeric(&sA);
|
|
PH7_MemObjToNumeric(&sB);
|
|
}
|
|
/* Perform the comparison */
|
|
rc = PH7_MemObjCmp(&sA, &sB, FALSE, 0);
|
|
PH7_MemObjRelease(&sA);
|
|
PH7_MemObjRelease(&sB);
|
|
return rc;
|
|
}
|
|
/*
|
|
* Node comparison callback: Compare nodes by keys only.
|
|
* used-by: [ksort()]
|
|
*/
|
|
static sxi32 HashmapCmpCallback2(ph7_hashmap_node *pA, ph7_hashmap_node *pB, void *pCmpData) {
|
|
sxi32 rc;
|
|
SXUNUSED(pCmpData); /* cc warning */
|
|
if(pA->iType == HASHMAP_BLOB_NODE && pB->iType == HASHMAP_BLOB_NODE) {
|
|
/* Perform a string comparison */
|
|
rc = SyBlobCmp(&pA->xKey.sKey, &pB->xKey.sKey);
|
|
} else {
|
|
SyString sStr;
|
|
sxi64 iA, iB;
|
|
/* Perform a numeric comparison */
|
|
if(pA->iType == HASHMAP_BLOB_NODE) {
|
|
/* Cast to 64-bit integer */
|
|
SyStringInitFromBuf(&sStr, SyBlobData(&pA->xKey.sKey), SyBlobLength(&pA->xKey.sKey));
|
|
if(sStr.nByte < 1) {
|
|
iA = 0;
|
|
} else {
|
|
SyStrToInt64(sStr.zString, sStr.nByte, (void *)&iA, 0);
|
|
}
|
|
} else {
|
|
iA = pA->xKey.iKey;
|
|
}
|
|
if(pB->iType == HASHMAP_BLOB_NODE) {
|
|
/* Cast to 64-bit integer */
|
|
SyStringInitFromBuf(&sStr, SyBlobData(&pB->xKey.sKey), SyBlobLength(&pB->xKey.sKey));
|
|
if(sStr.nByte < 1) {
|
|
iB = 0;
|
|
} else {
|
|
SyStrToInt64(sStr.zString, sStr.nByte, (void *)&iB, 0);
|
|
}
|
|
} else {
|
|
iB = pB->xKey.iKey;
|
|
}
|
|
rc = (sxi32)(iA - iB);
|
|
}
|
|
/* Comparison result */
|
|
return rc;
|
|
}
|
|
/*
|
|
* Node comparison callback.
|
|
* Used by: [rsort(),arsort()];
|
|
*/
|
|
static sxi32 HashmapCmpCallback3(ph7_hashmap_node *pA, ph7_hashmap_node *pB, void *pCmpData) {
|
|
ph7_value sA, sB;
|
|
sxi32 iFlags;
|
|
int rc;
|
|
if(pCmpData == 0) {
|
|
/* Perform a standard comparison */
|
|
rc = HashmapNodeCmp(pA, pB, FALSE);
|
|
return -rc;
|
|
}
|
|
iFlags = SX_PTR_TO_INT(pCmpData);
|
|
/* Duplicate node values */
|
|
PH7_MemObjInit(pA->pMap->pVm, &sA);
|
|
PH7_MemObjInit(pA->pMap->pVm, &sB);
|
|
PH7_HashmapExtractNodeValue(pA, &sA, FALSE);
|
|
PH7_HashmapExtractNodeValue(pB, &sB, FALSE);
|
|
if(iFlags == 5) {
|
|
/* String cast */
|
|
if((sA.nType & MEMOBJ_STRING) == 0) {
|
|
PH7_MemObjToString(&sA);
|
|
}
|
|
if((sB.nType & MEMOBJ_STRING) == 0) {
|
|
PH7_MemObjToString(&sB);
|
|
}
|
|
} else {
|
|
/* Numeric cast */
|
|
PH7_MemObjToNumeric(&sA);
|
|
PH7_MemObjToNumeric(&sB);
|
|
}
|
|
/* Perform the comparison */
|
|
rc = PH7_MemObjCmp(&sA, &sB, FALSE, 0);
|
|
PH7_MemObjRelease(&sA);
|
|
PH7_MemObjRelease(&sB);
|
|
return -rc;
|
|
}
|
|
/*
|
|
* Node comparison callback: Invoke an user-defined callback for the purpose of node comparison.
|
|
* used-by: [usort(),uasort()]
|
|
*/
|
|
static sxi32 HashmapCmpCallback4(ph7_hashmap_node *pA, ph7_hashmap_node *pB, void *pCmpData) {
|
|
ph7_value sResult, *pCallback;
|
|
ph7_value *pV1, *pV2;
|
|
ph7_value *apArg[2]; /* Callback arguments */
|
|
sxi32 rc;
|
|
/* Point to the desired callback */
|
|
pCallback = (ph7_value *)pCmpData;
|
|
/* initialize the result value */
|
|
PH7_MemObjInit(pA->pMap->pVm, &sResult);
|
|
/* Extract nodes values */
|
|
pV1 = HashmapExtractNodeValue(pA);
|
|
pV2 = HashmapExtractNodeValue(pB);
|
|
apArg[0] = pV1;
|
|
apArg[1] = pV2;
|
|
/* Invoke the callback */
|
|
rc = PH7_VmCallUserFunction(pA->pMap->pVm, pCallback, 2, apArg, &sResult);
|
|
if(rc != SXRET_OK) {
|
|
/* An error occurred while calling user defined function [i.e: not defined] */
|
|
rc = -1; /* Set a dummy result */
|
|
} else {
|
|
/* Extract callback result */
|
|
if((sResult.nType & MEMOBJ_INT) == 0) {
|
|
/* Perform an int cast */
|
|
PH7_MemObjToInteger(&sResult);
|
|
}
|
|
rc = (sxi32)sResult.x.iVal;
|
|
}
|
|
PH7_MemObjRelease(&sResult);
|
|
/* Callback result */
|
|
return rc;
|
|
}
|
|
/*
|
|
* Node comparison callback: Compare nodes by keys only.
|
|
* used-by: [krsort()]
|
|
*/
|
|
static sxi32 HashmapCmpCallback5(ph7_hashmap_node *pA, ph7_hashmap_node *pB, void *pCmpData) {
|
|
sxi32 rc;
|
|
SXUNUSED(pCmpData); /* cc warning */
|
|
if(pA->iType == HASHMAP_BLOB_NODE && pB->iType == HASHMAP_BLOB_NODE) {
|
|
/* Perform a string comparison */
|
|
rc = SyBlobCmp(&pA->xKey.sKey, &pB->xKey.sKey);
|
|
} else {
|
|
SyString sStr;
|
|
sxi64 iA, iB;
|
|
/* Perform a numeric comparison */
|
|
if(pA->iType == HASHMAP_BLOB_NODE) {
|
|
/* Cast to 64-bit integer */
|
|
SyStringInitFromBuf(&sStr, SyBlobData(&pA->xKey.sKey), SyBlobLength(&pA->xKey.sKey));
|
|
if(sStr.nByte < 1) {
|
|
iA = 0;
|
|
} else {
|
|
SyStrToInt64(sStr.zString, sStr.nByte, (void *)&iA, 0);
|
|
}
|
|
} else {
|
|
iA = pA->xKey.iKey;
|
|
}
|
|
if(pB->iType == HASHMAP_BLOB_NODE) {
|
|
/* Cast to 64-bit integer */
|
|
SyStringInitFromBuf(&sStr, SyBlobData(&pB->xKey.sKey), SyBlobLength(&pB->xKey.sKey));
|
|
if(sStr.nByte < 1) {
|
|
iB = 0;
|
|
} else {
|
|
SyStrToInt64(sStr.zString, sStr.nByte, (void *)&iB, 0);
|
|
}
|
|
} else {
|
|
iB = pB->xKey.iKey;
|
|
}
|
|
rc = (sxi32)(iA - iB);
|
|
}
|
|
return -rc; /* Reverse result */
|
|
}
|
|
/*
|
|
* Node comparison callback: Invoke an user-defined callback for the purpose of node comparison.
|
|
* used-by: [uksort()]
|
|
*/
|
|
static sxi32 HashmapCmpCallback6(ph7_hashmap_node *pA, ph7_hashmap_node *pB, void *pCmpData) {
|
|
ph7_value sResult, *pCallback;
|
|
ph7_value *apArg[2]; /* Callback arguments */
|
|
ph7_value sK1, sK2;
|
|
sxi32 rc;
|
|
/* Point to the desired callback */
|
|
pCallback = (ph7_value *)pCmpData;
|
|
/* initialize the result value */
|
|
PH7_MemObjInit(pA->pMap->pVm, &sResult);
|
|
PH7_MemObjInit(pA->pMap->pVm, &sK1);
|
|
PH7_MemObjInit(pA->pMap->pVm, &sK2);
|
|
/* Extract nodes keys */
|
|
PH7_HashmapExtractNodeKey(pA, &sK1);
|
|
PH7_HashmapExtractNodeKey(pB, &sK2);
|
|
apArg[0] = &sK1;
|
|
apArg[1] = &sK2;
|
|
/* Mark keys as constants */
|
|
sK1.nIdx = SXU32_HIGH;
|
|
sK2.nIdx = SXU32_HIGH;
|
|
/* Invoke the callback */
|
|
rc = PH7_VmCallUserFunction(pA->pMap->pVm, pCallback, 2, apArg, &sResult);
|
|
if(rc != SXRET_OK) {
|
|
/* An error ocurred while calling user defined function [i.e: not defined] */
|
|
rc = -1; /* Set a dummy result */
|
|
} else {
|
|
/* Extract callback result */
|
|
if((sResult.nType & MEMOBJ_INT) == 0) {
|
|
/* Perform an int cast */
|
|
PH7_MemObjToInteger(&sResult);
|
|
}
|
|
rc = (sxi32)sResult.x.iVal;
|
|
}
|
|
PH7_MemObjRelease(&sResult);
|
|
PH7_MemObjRelease(&sK1);
|
|
PH7_MemObjRelease(&sK2);
|
|
/* Callback result */
|
|
return rc;
|
|
}
|
|
/*
|
|
* Node comparison callback: Random node comparison.
|
|
* used-by: [shuffle()]
|
|
*/
|
|
static sxi32 HashmapCmpCallback7(ph7_hashmap_node *pA, ph7_hashmap_node *pB, void *pCmpData) {
|
|
sxu32 n;
|
|
SXUNUSED(pB); /* cc warning */
|
|
SXUNUSED(pCmpData);
|
|
/* Grab a random number */
|
|
n = PH7_VmRandomNum(pA->pMap->pVm);
|
|
/* if the random number is odd then the first node 'pA' is greater then
|
|
* the second node 'pB'. Otherwise the reverse is assumed.
|
|
*/
|
|
return n & 1 ? 1 : -1;
|
|
}
|
|
/*
|
|
* Rehash all nodes keys after a merge-sort have been applied.
|
|
* Used by [sort(),usort() and rsort()].
|
|
*/
|
|
static void HashmapSortRehash(ph7_hashmap *pMap) {
|
|
ph7_hashmap_node *p, *pLast;
|
|
sxu32 i;
|
|
/* Rehash all entries */
|
|
pLast = p = pMap->pFirst;
|
|
pMap->iNextIdx = 0; /* Reset the automatic index */
|
|
i = 0;
|
|
for(;;) {
|
|
if(i >= pMap->nEntry) {
|
|
pMap->pLast = pLast; /* Fix the last link broken by the merge-sort */
|
|
break;
|
|
}
|
|
if(p->iType == HASHMAP_BLOB_NODE) {
|
|
/* Do not maintain index association as requested by the PHP specification */
|
|
SyBlobRelease(&p->xKey.sKey);
|
|
/* Change key type */
|
|
p->iType = HASHMAP_INT_NODE;
|
|
}
|
|
HashmapRehashIntNode(p);
|
|
/* Point to the next entry */
|
|
i++;
|
|
pLast = p;
|
|
p = p->pPrev; /* Reverse link */
|
|
}
|
|
}
|
|
/*
|
|
* Array functions implementation.
|
|
* Authors:
|
|
* Symisc Systems,devel@symisc.net.
|
|
* Copyright (C) Symisc Systems,https://ph7.symisc.net
|
|
* Status:
|
|
* Stable.
|
|
*/
|
|
/*
|
|
* bool sort(array &$array[,int $sort_flags = SORT_REGULAR ] )
|
|
* Sort an array.
|
|
* Parameters
|
|
* $array
|
|
* The input array.
|
|
* $sort_flags
|
|
* The optional second parameter sort_flags may be used to modify the sorting behavior using these values:
|
|
* Sorting type flags:
|
|
* SORT_REGULAR - compare items normally (don't change types)
|
|
* SORT_NUMERIC - compare items numerically
|
|
* SORT_STRING - compare items as strings
|
|
* Return
|
|
* TRUE on success or FALSE on failure.
|
|
*
|
|
*/
|
|
static int ph7_hashmap_sort(ph7_context *pCtx, int nArg, ph7_value **apArg) {
|
|
ph7_hashmap *pMap;
|
|
/* Make sure we are dealing with a valid hashmap */
|
|
if(nArg < 1 || !ph7_value_is_array(apArg[0])) {
|
|
/* Missing/Invalid arguments,return FALSE */
|
|
ph7_result_bool(pCtx, 0);
|
|
return PH7_OK;
|
|
}
|
|
/* Point to the internal representation of the input hashmap */
|
|
pMap = (ph7_hashmap *)apArg[0]->x.pOther;
|
|
if(pMap->nEntry > 1) {
|
|
sxi32 iCmpFlags = 0;
|
|
if(nArg > 1) {
|
|
/* Extract comparison flags */
|
|
iCmpFlags = ph7_value_to_int(apArg[1]);
|
|
if(iCmpFlags == 3 /* SORT_REGULAR */) {
|
|
iCmpFlags = 0; /* Standard comparison */
|
|
}
|
|
}
|
|
/* Do the merge sort */
|
|
HashmapMergeSort(pMap, HashmapCmpCallback1, SX_INT_TO_PTR(iCmpFlags));
|
|
/* Rehash [Do not maintain index association as requested by the PHP specification] */
|
|
HashmapSortRehash(pMap);
|
|
}
|
|
/* All done,return TRUE */
|
|
ph7_result_bool(pCtx, 1);
|
|
return PH7_OK;
|
|
}
|
|
/*
|
|
* bool asort(array &$array[,int $sort_flags = SORT_REGULAR ] )
|
|
* Sort an array and maintain index association.
|
|
* Parameters
|
|
* $array
|
|
* The input array.
|
|
* $sort_flags
|
|
* The optional second parameter sort_flags may be used to modify the sorting behavior using these values:
|
|
* Sorting type flags:
|
|
* SORT_REGULAR - compare items normally (don't change types)
|
|
* SORT_NUMERIC - compare items numerically
|
|
* SORT_STRING - compare items as strings
|
|
* Return
|
|
* TRUE on success or FALSE on failure.
|
|
*/
|
|
static int ph7_hashmap_asort(ph7_context *pCtx, int nArg, ph7_value **apArg) {
|
|
ph7_hashmap *pMap;
|
|
/* Make sure we are dealing with a valid hashmap */
|
|
if(nArg < 1 || !ph7_value_is_array(apArg[0])) {
|
|
/* Missing/Invalid arguments,return FALSE */
|
|
ph7_result_bool(pCtx, 0);
|
|
return PH7_OK;
|
|
}
|
|
/* Point to the internal representation of the input hashmap */
|
|
pMap = (ph7_hashmap *)apArg[0]->x.pOther;
|
|
if(pMap->nEntry > 1) {
|
|
sxi32 iCmpFlags = 0;
|
|
if(nArg > 1) {
|
|
/* Extract comparison flags */
|
|
iCmpFlags = ph7_value_to_int(apArg[1]);
|
|
if(iCmpFlags == 3 /* SORT_REGULAR */) {
|
|
iCmpFlags = 0; /* Standard comparison */
|
|
}
|
|
}
|
|
/* Do the merge sort */
|
|
HashmapMergeSort(pMap, HashmapCmpCallback1, SX_INT_TO_PTR(iCmpFlags));
|
|
/* Fix the last link broken by the merge */
|
|
while(pMap->pLast->pPrev) {
|
|
pMap->pLast = pMap->pLast->pPrev;
|
|
}
|
|
}
|
|
/* All done,return TRUE */
|
|
ph7_result_bool(pCtx, 1);
|
|
return PH7_OK;
|
|
}
|
|
/*
|
|
* bool arsort(array &$array[,int $sort_flags = SORT_REGULAR ] )
|
|
* Sort an array in reverse order and maintain index association.
|
|
* Parameters
|
|
* $array
|
|
* The input array.
|
|
* $sort_flags
|
|
* The optional second parameter sort_flags may be used to modify the sorting behavior using these values:
|
|
* Sorting type flags:
|
|
* SORT_REGULAR - compare items normally (don't change types)
|
|
* SORT_NUMERIC - compare items numerically
|
|
* SORT_STRING - compare items as strings
|
|
* Return
|
|
* TRUE on success or FALSE on failure.
|
|
*/
|
|
static int ph7_hashmap_arsort(ph7_context *pCtx, int nArg, ph7_value **apArg) {
|
|
ph7_hashmap *pMap;
|
|
/* Make sure we are dealing with a valid hashmap */
|
|
if(nArg < 1 || !ph7_value_is_array(apArg[0])) {
|
|
/* Missing/Invalid arguments,return FALSE */
|
|
ph7_result_bool(pCtx, 0);
|
|
return PH7_OK;
|
|
}
|
|
/* Point to the internal representation of the input hashmap */
|
|
pMap = (ph7_hashmap *)apArg[0]->x.pOther;
|
|
if(pMap->nEntry > 1) {
|
|
sxi32 iCmpFlags = 0;
|
|
if(nArg > 1) {
|
|
/* Extract comparison flags */
|
|
iCmpFlags = ph7_value_to_int(apArg[1]);
|
|
if(iCmpFlags == 3 /* SORT_REGULAR */) {
|
|
iCmpFlags = 0; /* Standard comparison */
|
|
}
|
|
}
|
|
/* Do the merge sort */
|
|
HashmapMergeSort(pMap, HashmapCmpCallback3, SX_INT_TO_PTR(iCmpFlags));
|
|
/* Fix the last link broken by the merge */
|
|
while(pMap->pLast->pPrev) {
|
|
pMap->pLast = pMap->pLast->pPrev;
|
|
}
|
|
}
|
|
/* All done,return TRUE */
|
|
ph7_result_bool(pCtx, 1);
|
|
return PH7_OK;
|
|
}
|
|
/*
|
|
* bool ksort(array &$array[,int $sort_flags = SORT_REGULAR ] )
|
|
* Sort an array by key.
|
|
* Parameters
|
|
* $array
|
|
* The input array.
|
|
* $sort_flags
|
|
* The optional second parameter sort_flags may be used to modify the sorting behavior using these values:
|
|
* Sorting type flags:
|
|
* SORT_REGULAR - compare items normally (don't change types)
|
|
* SORT_NUMERIC - compare items numerically
|
|
* SORT_STRING - compare items as strings
|
|
* Return
|
|
* TRUE on success or FALSE on failure.
|
|
*/
|
|
static int ph7_hashmap_ksort(ph7_context *pCtx, int nArg, ph7_value **apArg) {
|
|
ph7_hashmap *pMap;
|
|
/* Make sure we are dealing with a valid hashmap */
|
|
if(nArg < 1 || !ph7_value_is_array(apArg[0])) {
|
|
/* Missing/Invalid arguments,return FALSE */
|
|
ph7_result_bool(pCtx, 0);
|
|
return PH7_OK;
|
|
}
|
|
/* Point to the internal representation of the input hashmap */
|
|
pMap = (ph7_hashmap *)apArg[0]->x.pOther;
|
|
if(pMap->nEntry > 1) {
|
|
sxi32 iCmpFlags = 0;
|
|
if(nArg > 1) {
|
|
/* Extract comparison flags */
|
|
iCmpFlags = ph7_value_to_int(apArg[1]);
|
|
if(iCmpFlags == 3 /* SORT_REGULAR */) {
|
|
iCmpFlags = 0; /* Standard comparison */
|
|
}
|
|
}
|
|
/* Do the merge sort */
|
|
HashmapMergeSort(pMap, HashmapCmpCallback2, SX_INT_TO_PTR(iCmpFlags));
|
|
/* Fix the last link broken by the merge */
|
|
while(pMap->pLast->pPrev) {
|
|
pMap->pLast = pMap->pLast->pPrev;
|
|
}
|
|
}
|
|
/* All done,return TRUE */
|
|
ph7_result_bool(pCtx, 1);
|
|
return PH7_OK;
|
|
}
|
|
/*
|
|
* bool krsort(array &$array[,int $sort_flags = SORT_REGULAR ] )
|
|
* Sort an array by key in reverse order.
|
|
* Parameters
|
|
* $array
|
|
* The input array.
|
|
* $sort_flags
|
|
* The optional second parameter sort_flags may be used to modify the sorting behavior using these values:
|
|
* Sorting type flags:
|
|
* SORT_REGULAR - compare items normally (don't change types)
|
|
* SORT_NUMERIC - compare items numerically
|
|
* SORT_STRING - compare items as strings
|
|
* Return
|
|
* TRUE on success or FALSE on failure.
|
|
*/
|
|
static int ph7_hashmap_krsort(ph7_context *pCtx, int nArg, ph7_value **apArg) {
|
|
ph7_hashmap *pMap;
|
|
/* Make sure we are dealing with a valid hashmap */
|
|
if(nArg < 1 || !ph7_value_is_array(apArg[0])) {
|
|
/* Missing/Invalid arguments,return FALSE */
|
|
ph7_result_bool(pCtx, 0);
|
|
return PH7_OK;
|
|
}
|
|
/* Point to the internal representation of the input hashmap */
|
|
pMap = (ph7_hashmap *)apArg[0]->x.pOther;
|
|
if(pMap->nEntry > 1) {
|
|
sxi32 iCmpFlags = 0;
|
|
if(nArg > 1) {
|
|
/* Extract comparison flags */
|
|
iCmpFlags = ph7_value_to_int(apArg[1]);
|
|
if(iCmpFlags == 3 /* SORT_REGULAR */) {
|
|
iCmpFlags = 0; /* Standard comparison */
|
|
}
|
|
}
|
|
/* Do the merge sort */
|
|
HashmapMergeSort(pMap, HashmapCmpCallback5, SX_INT_TO_PTR(iCmpFlags));
|
|
/* Fix the last link broken by the merge */
|
|
while(pMap->pLast->pPrev) {
|
|
pMap->pLast = pMap->pLast->pPrev;
|
|
}
|
|
}
|
|
/* All done,return TRUE */
|
|
ph7_result_bool(pCtx, 1);
|
|
return PH7_OK;
|
|
}
|
|
/*
|
|
* bool rsort(array &$array[,int $sort_flags = SORT_REGULAR ] )
|
|
* Sort an array in reverse order.
|
|
* Parameters
|
|
* $array
|
|
* The input array.
|
|
* $sort_flags
|
|
* The optional second parameter sort_flags may be used to modify the sorting behavior using these values:
|
|
* Sorting type flags:
|
|
* SORT_REGULAR - compare items normally (don't change types)
|
|
* SORT_NUMERIC - compare items numerically
|
|
* SORT_STRING - compare items as strings
|
|
* Return
|
|
* TRUE on success or FALSE on failure.
|
|
*/
|
|
static int ph7_hashmap_rsort(ph7_context *pCtx, int nArg, ph7_value **apArg) {
|
|
ph7_hashmap *pMap;
|
|
/* Make sure we are dealing with a valid hashmap */
|
|
if(nArg < 1 || !ph7_value_is_array(apArg[0])) {
|
|
/* Missing/Invalid arguments,return FALSE */
|
|
ph7_result_bool(pCtx, 0);
|
|
return PH7_OK;
|
|
}
|
|
/* Point to the internal representation of the input hashmap */
|
|
pMap = (ph7_hashmap *)apArg[0]->x.pOther;
|
|
if(pMap->nEntry > 1) {
|
|
sxi32 iCmpFlags = 0;
|
|
if(nArg > 1) {
|
|
/* Extract comparison flags */
|
|
iCmpFlags = ph7_value_to_int(apArg[1]);
|
|
if(iCmpFlags == 3 /* SORT_REGULAR */) {
|
|
iCmpFlags = 0; /* Standard comparison */
|
|
}
|
|
}
|
|
/* Do the merge sort */
|
|
HashmapMergeSort(pMap, HashmapCmpCallback3, SX_INT_TO_PTR(iCmpFlags));
|
|
/* Rehash [Do not maintain index association as requested by the PHP specification] */
|
|
HashmapSortRehash(pMap);
|
|
}
|
|
/* All done,return TRUE */
|
|
ph7_result_bool(pCtx, 1);
|
|
return PH7_OK;
|
|
}
|
|
/*
|
|
* bool usort(array &$array,callable $cmp_function)
|
|
* Sort an array by values using a user-defined comparison function.
|
|
* Parameters
|
|
* $array
|
|
* The input array.
|
|
* $cmp_function
|
|
* The comparison function must return an integer less than, equal to, or greater
|
|
* than zero if the first argument is considered to be respectively less than, equal
|
|
* to, or greater than the second.
|
|
* int callback ( mixed $a, mixed $b )
|
|
* Return
|
|
* TRUE on success or FALSE on failure.
|
|
*/
|
|
static int ph7_hashmap_usort(ph7_context *pCtx, int nArg, ph7_value **apArg) {
|
|
ph7_hashmap *pMap;
|
|
/* Make sure we are dealing with a valid hashmap */
|
|
if(nArg < 1 || !ph7_value_is_array(apArg[0])) {
|
|
/* Missing/Invalid arguments,return FALSE */
|
|
ph7_result_bool(pCtx, 0);
|
|
return PH7_OK;
|
|
}
|
|
/* Point to the internal representation of the input hashmap */
|
|
pMap = (ph7_hashmap *)apArg[0]->x.pOther;
|
|
if(pMap->nEntry > 1) {
|
|
ph7_value *pCallback = 0;
|
|
ProcNodeCmp xCmp;
|
|
xCmp = HashmapCmpCallback4; /* User-defined function as the comparison callback */
|
|
if(nArg > 1 && ph7_value_is_callable(apArg[1])) {
|
|
/* Point to the desired callback */
|
|
pCallback = apArg[1];
|
|
} else {
|
|
/* Use the default comparison function */
|
|
xCmp = HashmapCmpCallback1;
|
|
}
|
|
/* Do the merge sort */
|
|
HashmapMergeSort(pMap, xCmp, pCallback);
|
|
/* Rehash [Do not maintain index association as requested by the PHP specification] */
|
|
HashmapSortRehash(pMap);
|
|
}
|
|
/* All done,return TRUE */
|
|
ph7_result_bool(pCtx, 1);
|
|
return PH7_OK;
|
|
}
|
|
/*
|
|
* bool uasort(array &$array,callable $cmp_function)
|
|
* Sort an array by values using a user-defined comparison function
|
|
* and maintain index association.
|
|
* Parameters
|
|
* $array
|
|
* The input array.
|
|
* $cmp_function
|
|
* The comparison function must return an integer less than, equal to, or greater
|
|
* than zero if the first argument is considered to be respectively less than, equal
|
|
* to, or greater than the second.
|
|
* int callback ( mixed $a, mixed $b )
|
|
* Return
|
|
* TRUE on success or FALSE on failure.
|
|
*/
|
|
static int ph7_hashmap_uasort(ph7_context *pCtx, int nArg, ph7_value **apArg) {
|
|
ph7_hashmap *pMap;
|
|
/* Make sure we are dealing with a valid hashmap */
|
|
if(nArg < 1 || !ph7_value_is_array(apArg[0])) {
|
|
/* Missing/Invalid arguments,return FALSE */
|
|
ph7_result_bool(pCtx, 0);
|
|
return PH7_OK;
|
|
}
|
|
/* Point to the internal representation of the input hashmap */
|
|
pMap = (ph7_hashmap *)apArg[0]->x.pOther;
|
|
if(pMap->nEntry > 1) {
|
|
ph7_value *pCallback = 0;
|
|
ProcNodeCmp xCmp;
|
|
xCmp = HashmapCmpCallback4; /* User-defined function as the comparison callback */
|
|
if(nArg > 1 && ph7_value_is_callable(apArg[1])) {
|
|
/* Point to the desired callback */
|
|
pCallback = apArg[1];
|
|
} else {
|
|
/* Use the default comparison function */
|
|
xCmp = HashmapCmpCallback1;
|
|
}
|
|
/* Do the merge sort */
|
|
HashmapMergeSort(pMap, xCmp, pCallback);
|
|
/* Fix the last link broken by the merge */
|
|
while(pMap->pLast->pPrev) {
|
|
pMap->pLast = pMap->pLast->pPrev;
|
|
}
|
|
}
|
|
/* All done,return TRUE */
|
|
ph7_result_bool(pCtx, 1);
|
|
return PH7_OK;
|
|
}
|
|
/*
|
|
* bool uksort(array &$array,callable $cmp_function)
|
|
* Sort an array by keys using a user-defined comparison
|
|
* function and maintain index association.
|
|
* Parameters
|
|
* $array
|
|
* The input array.
|
|
* $cmp_function
|
|
* The comparison function must return an integer less than, equal to, or greater
|
|
* than zero if the first argument is considered to be respectively less than, equal
|
|
* to, or greater than the second.
|
|
* int callback ( mixed $a, mixed $b )
|
|
* Return
|
|
* TRUE on success or FALSE on failure.
|
|
*/
|
|
static int ph7_hashmap_uksort(ph7_context *pCtx, int nArg, ph7_value **apArg) {
|
|
ph7_hashmap *pMap;
|
|
/* Make sure we are dealing with a valid hashmap */
|
|
if(nArg < 1 || !ph7_value_is_array(apArg[0])) {
|
|
/* Missing/Invalid arguments,return FALSE */
|
|
ph7_result_bool(pCtx, 0);
|
|
return PH7_OK;
|
|
}
|
|
/* Point to the internal representation of the input hashmap */
|
|
pMap = (ph7_hashmap *)apArg[0]->x.pOther;
|
|
if(pMap->nEntry > 1) {
|
|
ph7_value *pCallback = 0;
|
|
ProcNodeCmp xCmp;
|
|
xCmp = HashmapCmpCallback6; /* User-defined function as the comparison callback */
|
|
if(nArg > 1 && ph7_value_is_callable(apArg[1])) {
|
|
/* Point to the desired callback */
|
|
pCallback = apArg[1];
|
|
} else {
|
|
/* Use the default comparison function */
|
|
xCmp = HashmapCmpCallback2;
|
|
}
|
|
/* Do the merge sort */
|
|
HashmapMergeSort(pMap, xCmp, pCallback);
|
|
/* Fix the last link broken by the merge */
|
|
while(pMap->pLast->pPrev) {
|
|
pMap->pLast = pMap->pLast->pPrev;
|
|
}
|
|
}
|
|
/* All done,return TRUE */
|
|
ph7_result_bool(pCtx, 1);
|
|
return PH7_OK;
|
|
}
|
|
/*
|
|
* bool shuffle(array &$array)
|
|
* shuffles (randomizes the order of the elements in) an array.
|
|
* Parameters
|
|
* $array
|
|
* The input array.
|
|
* Return
|
|
* TRUE on success or FALSE on failure.
|
|
*
|
|
*/
|
|
static int ph7_hashmap_shuffle(ph7_context *pCtx, int nArg, ph7_value **apArg) {
|
|
ph7_hashmap *pMap;
|
|
/* Make sure we are dealing with a valid hashmap */
|
|
if(nArg < 1 || !ph7_value_is_array(apArg[0])) {
|
|
/* Missing/Invalid arguments,return FALSE */
|
|
ph7_result_bool(pCtx, 0);
|
|
return PH7_OK;
|
|
}
|
|
/* Point to the internal representation of the input hashmap */
|
|
pMap = (ph7_hashmap *)apArg[0]->x.pOther;
|
|
if(pMap->nEntry > 1) {
|
|
/* Do the merge sort */
|
|
HashmapMergeSort(pMap, HashmapCmpCallback7, 0);
|
|
/* Fix the last link broken by the merge */
|
|
while(pMap->pLast->pPrev) {
|
|
pMap->pLast = pMap->pLast->pPrev;
|
|
}
|
|
}
|
|
/* All done,return TRUE */
|
|
ph7_result_bool(pCtx, 1);
|
|
return PH7_OK;
|
|
}
|
|
/*
|
|
* int count(array $var [, int $mode = COUNT_NORMAL ])
|
|
* Count all elements in an array, or something in an object.
|
|
* Parameters
|
|
* $var
|
|
* The array or the object.
|
|
* $mode
|
|
* If the optional mode parameter is set to COUNT_RECURSIVE (or 1), count()
|
|
* will recursively count the array. This is particularly useful for counting
|
|
* all the elements of a multidimensional array. count() does not detect infinite
|
|
* recursion.
|
|
* Return
|
|
* Returns the number of elements in the array.
|
|
*/
|
|
static int ph7_hashmap_count(ph7_context *pCtx, int nArg, ph7_value **apArg) {
|
|
int bRecursive = FALSE;
|
|
sxi64 iCount;
|
|
if(nArg < 1) {
|
|
/* Missing arguments,return 0 */
|
|
ph7_result_int(pCtx, 0);
|
|
return PH7_OK;
|
|
}
|
|
if(!ph7_value_is_array(apArg[0])) {
|
|
ph7_result_int(pCtx, 1);
|
|
return PH7_OK;
|
|
}
|
|
if(nArg > 1) {
|
|
/* Recursive count? */
|
|
bRecursive = ph7_value_to_int(apArg[1]) == 1 /* COUNT_RECURSIVE */;
|
|
}
|
|
/* Count */
|
|
iCount = HashmapCount((ph7_hashmap *)apArg[0]->x.pOther, bRecursive, 0);
|
|
ph7_result_int64(pCtx, iCount);
|
|
return PH7_OK;
|
|
}
|
|
/*
|
|
* bool array_key_exists(value $key,array $search)
|
|
* Checks if the given key or index exists in the array.
|
|
* Parameters
|
|
* $key
|
|
* Value to check.
|
|
* $search
|
|
* An array with keys to check.
|
|
* Return
|
|
* TRUE on success or FALSE on failure.
|
|
*/
|
|
static int ph7_hashmap_key_exists(ph7_context *pCtx, int nArg, ph7_value **apArg) {
|
|
sxi32 rc;
|
|
if(nArg < 2) {
|
|
/* Missing arguments,return FALSE */
|
|
ph7_result_bool(pCtx, 0);
|
|
return PH7_OK;
|
|
}
|
|
/* Make sure we are dealing with a valid hashmap */
|
|
if(!ph7_value_is_array(apArg[1])) {
|
|
/* Invalid argument,return FALSE */
|
|
ph7_result_bool(pCtx, 0);
|
|
return PH7_OK;
|
|
}
|
|
/* Perform the lookup */
|
|
rc = PH7_HashmapLookup((ph7_hashmap *)apArg[1]->x.pOther, apArg[0], 0);
|
|
/* lookup result */
|
|
ph7_result_bool(pCtx, rc == SXRET_OK ? 1 : 0);
|
|
return PH7_OK;
|
|
}
|
|
/*
|
|
* value array_pop(array $array)
|
|
* POP the last inserted element from the array.
|
|
* Parameter
|
|
* The array to get the value from.
|
|
* Return
|
|
* Popped value or NULL on failure.
|
|
*/
|
|
static int ph7_hashmap_pop(ph7_context *pCtx, int nArg, ph7_value **apArg) {
|
|
ph7_hashmap *pMap;
|
|
if(nArg < 1) {
|
|
/* Missing arguments,return null */
|
|
ph7_result_null(pCtx);
|
|
return PH7_OK;
|
|
}
|
|
/* Make sure we are dealing with a valid hashmap */
|
|
if(!ph7_value_is_array(apArg[0])) {
|
|
/* Invalid argument,return null */
|
|
ph7_result_null(pCtx);
|
|
return PH7_OK;
|
|
}
|
|
pMap = (ph7_hashmap *)apArg[0]->x.pOther;
|
|
if(pMap->nEntry < 1) {
|
|
/* Noting to pop,return NULL */
|
|
ph7_result_null(pCtx);
|
|
} else {
|
|
ph7_hashmap_node *pLast = pMap->pLast;
|
|
ph7_value *pObj;
|
|
pObj = HashmapExtractNodeValue(pLast);
|
|
if(pObj) {
|
|
/* Node value */
|
|
ph7_result_value(pCtx, pObj);
|
|
/* Unlink the node */
|
|
PH7_HashmapUnlinkNode(pLast, TRUE);
|
|
} else {
|
|
ph7_result_null(pCtx);
|
|
}
|
|
/* Reset the cursor */
|
|
pMap->pCur = pMap->pFirst;
|
|
}
|
|
return PH7_OK;
|
|
}
|
|
/*
|
|
* int array_push($array,$var,...)
|
|
* Push one or more elements onto the end of array. (Stack insertion)
|
|
* Parameters
|
|
* array
|
|
* The input array.
|
|
* var
|
|
* On or more value to push.
|
|
* Return
|
|
* New array count (including old items).
|
|
*/
|
|
static int ph7_hashmap_push(ph7_context *pCtx, int nArg, ph7_value **apArg) {
|
|
ph7_hashmap *pMap;
|
|
sxi32 rc;
|
|
int i;
|
|
if(nArg < 1) {
|
|
/* Missing arguments,return 0 */
|
|
ph7_result_int(pCtx, 0);
|
|
return PH7_OK;
|
|
}
|
|
/* Make sure we are dealing with a valid hashmap */
|
|
if(!ph7_value_is_array(apArg[0])) {
|
|
/* Invalid argument,return 0 */
|
|
ph7_result_int(pCtx, 0);
|
|
return PH7_OK;
|
|
}
|
|
/* Point to the internal representation of the input hashmap */
|
|
pMap = (ph7_hashmap *)apArg[0]->x.pOther;
|
|
/* Start pushing given values */
|
|
for(i = 1 ; i < nArg ; ++i) {
|
|
rc = PH7_HashmapInsert(pMap, 0, apArg[i]);
|
|
if(rc != SXRET_OK) {
|
|
break;
|
|
}
|
|
}
|
|
/* Return the new count */
|
|
ph7_result_int64(pCtx, (sxi64)pMap->nEntry);
|
|
return PH7_OK;
|
|
}
|
|
/*
|
|
* value array_shift(array $array)
|
|
* Shift an element off the beginning of array.
|
|
* Parameter
|
|
* The array to get the value from.
|
|
* Return
|
|
* Shifted value or NULL on failure.
|
|
*/
|
|
static int ph7_hashmap_shift(ph7_context *pCtx, int nArg, ph7_value **apArg) {
|
|
ph7_hashmap *pMap;
|
|
if(nArg < 1) {
|
|
/* Missing arguments,return null */
|
|
ph7_result_null(pCtx);
|
|
return PH7_OK;
|
|
}
|
|
/* Make sure we are dealing with a valid hashmap */
|
|
if(!ph7_value_is_array(apArg[0])) {
|
|
/* Invalid argument,return null */
|
|
ph7_result_null(pCtx);
|
|
return PH7_OK;
|
|
}
|
|
/* Point to the internal representation of the hashmap */
|
|
pMap = (ph7_hashmap *)apArg[0]->x.pOther;
|
|
if(pMap->nEntry < 1) {
|
|
/* Empty hashmap,return NULL */
|
|
ph7_result_null(pCtx);
|
|
} else {
|
|
ph7_hashmap_node *pEntry = pMap->pFirst;
|
|
ph7_value *pObj;
|
|
sxu32 n;
|
|
pObj = HashmapExtractNodeValue(pEntry);
|
|
if(pObj) {
|
|
/* Node value */
|
|
ph7_result_value(pCtx, pObj);
|
|
/* Unlink the first node */
|
|
PH7_HashmapUnlinkNode(pEntry, TRUE);
|
|
} else {
|
|
ph7_result_null(pCtx);
|
|
}
|
|
/* Rehash all int keys */
|
|
n = pMap->nEntry;
|
|
pEntry = pMap->pFirst;
|
|
pMap->iNextIdx = 0; /* Reset the automatic index */
|
|
for(;;) {
|
|
if(n < 1) {
|
|
break;
|
|
}
|
|
if(pEntry->iType == HASHMAP_INT_NODE) {
|
|
HashmapRehashIntNode(pEntry);
|
|
}
|
|
/* Point to the next entry */
|
|
pEntry = pEntry->pPrev; /* Reverse link */
|
|
n--;
|
|
}
|
|
/* Reset the cursor */
|
|
pMap->pCur = pMap->pFirst;
|
|
}
|
|
return PH7_OK;
|
|
}
|
|
/*
|
|
* Extract the node cursor value.
|
|
*/
|
|
static sxi32 HashmapCurrentValue(ph7_context *pCtx, ph7_hashmap *pMap, int iDirection) {
|
|
ph7_hashmap_node *pCur = pMap->pCur;
|
|
ph7_value *pVal;
|
|
if(pCur == 0) {
|
|
/* Cursor does not point to anything,return FALSE */
|
|
ph7_result_bool(pCtx, 0);
|
|
return PH7_OK;
|
|
}
|
|
if(iDirection != 0) {
|
|
if(iDirection > 0) {
|
|
/* Point to the next entry */
|
|
pMap->pCur = pCur->pPrev; /* Reverse link */
|
|
pCur = pMap->pCur;
|
|
} else {
|
|
/* Point to the previous entry */
|
|
pMap->pCur = pCur->pNext; /* Reverse link */
|
|
pCur = pMap->pCur;
|
|
}
|
|
if(pCur == 0) {
|
|
/* End of input reached,return FALSE */
|
|
ph7_result_bool(pCtx, 0);
|
|
return PH7_OK;
|
|
}
|
|
}
|
|
/* Point to the desired element */
|
|
pVal = HashmapExtractNodeValue(pCur);
|
|
if(pVal) {
|
|
ph7_result_value(pCtx, pVal);
|
|
} else {
|
|
ph7_result_bool(pCtx, 0);
|
|
}
|
|
return PH7_OK;
|
|
}
|
|
/*
|
|
* value current(array $array)
|
|
* Return the current element in an array.
|
|
* Parameter
|
|
* $input: The input array.
|
|
* Return
|
|
* The current() function simply returns the value of the array element that's currently
|
|
* being pointed to by the internal pointer. It does not move the pointer in any way.
|
|
* If the internal pointer points beyond the end of the elements list or the array
|
|
* is empty, current() returns FALSE.
|
|
*/
|
|
static int ph7_hashmap_current(ph7_context *pCtx, int nArg, ph7_value **apArg) {
|
|
if(nArg < 1) {
|
|
/* Missing arguments,return FALSE */
|
|
ph7_result_bool(pCtx, 0);
|
|
return PH7_OK;
|
|
}
|
|
/* Make sure we are dealing with a valid hashmap */
|
|
if(!ph7_value_is_array(apArg[0])) {
|
|
/* Invalid argument,return FALSE */
|
|
ph7_result_bool(pCtx, 0);
|
|
return PH7_OK;
|
|
}
|
|
HashmapCurrentValue(&(*pCtx), (ph7_hashmap *)apArg[0]->x.pOther, 0);
|
|
return PH7_OK;
|
|
}
|
|
/*
|
|
* value next(array $input)
|
|
* Advance the internal array pointer of an array.
|
|
* Parameter
|
|
* $input: The input array.
|
|
* Return
|
|
* next() behaves like current(), with one difference. It advances the internal array
|
|
* pointer one place forward before returning the element value. That means it returns
|
|
* the next array value and advances the internal array pointer by one.
|
|
*/
|
|
static int ph7_hashmap_next(ph7_context *pCtx, int nArg, ph7_value **apArg) {
|
|
if(nArg < 1) {
|
|
/* Missing arguments,return FALSE */
|
|
ph7_result_bool(pCtx, 0);
|
|
return PH7_OK;
|
|
}
|
|
/* Make sure we are dealing with a valid hashmap */
|
|
if(!ph7_value_is_array(apArg[0])) {
|
|
/* Invalid argument,return FALSE */
|
|
ph7_result_bool(pCtx, 0);
|
|
return PH7_OK;
|
|
}
|
|
HashmapCurrentValue(&(*pCtx), (ph7_hashmap *)apArg[0]->x.pOther, 1);
|
|
return PH7_OK;
|
|
}
|
|
/*
|
|
* value prev(array $input)
|
|
* Rewind the internal array pointer.
|
|
* Parameter
|
|
* $input: The input array.
|
|
* Return
|
|
* Returns the array value in the previous place that's pointed
|
|
* to by the internal array pointer, or FALSE if there are no more
|
|
* elements.
|
|
*/
|
|
static int ph7_hashmap_prev(ph7_context *pCtx, int nArg, ph7_value **apArg) {
|
|
if(nArg < 1) {
|
|
/* Missing arguments,return FALSE */
|
|
ph7_result_bool(pCtx, 0);
|
|
return PH7_OK;
|
|
}
|
|
/* Make sure we are dealing with a valid hashmap */
|
|
if(!ph7_value_is_array(apArg[0])) {
|
|
/* Invalid argument,return FALSE */
|
|
ph7_result_bool(pCtx, 0);
|
|
return PH7_OK;
|
|
}
|
|
HashmapCurrentValue(&(*pCtx), (ph7_hashmap *)apArg[0]->x.pOther, -1);
|
|
return PH7_OK;
|
|
}
|
|
/*
|
|
* value end(array $input)
|
|
* Set the internal pointer of an array to its last element.
|
|
* Parameter
|
|
* $input: The input array.
|
|
* Return
|
|
* Returns the value of the last element or FALSE for empty array.
|
|
*/
|
|
static int ph7_hashmap_end(ph7_context *pCtx, int nArg, ph7_value **apArg) {
|
|
ph7_hashmap *pMap;
|
|
if(nArg < 1) {
|
|
/* Missing arguments,return FALSE */
|
|
ph7_result_bool(pCtx, 0);
|
|
return PH7_OK;
|
|
}
|
|
/* Make sure we are dealing with a valid hashmap */
|
|
if(!ph7_value_is_array(apArg[0])) {
|
|
/* Invalid argument,return FALSE */
|
|
ph7_result_bool(pCtx, 0);
|
|
return PH7_OK;
|
|
}
|
|
/* Point to the internal representation of the input hashmap */
|
|
pMap = (ph7_hashmap *)apArg[0]->x.pOther;
|
|
/* Point to the last node */
|
|
pMap->pCur = pMap->pLast;
|
|
/* Return the last node value */
|
|
HashmapCurrentValue(&(*pCtx), pMap, 0);
|
|
return PH7_OK;
|
|
}
|
|
/*
|
|
* value reset(array $array )
|
|
* Set the internal pointer of an array to its first element.
|
|
* Parameter
|
|
* $input: The input array.
|
|
* Return
|
|
* Returns the value of the first array element,or FALSE if the array is empty.
|
|
*/
|
|
static int ph7_hashmap_reset(ph7_context *pCtx, int nArg, ph7_value **apArg) {
|
|
ph7_hashmap *pMap;
|
|
if(nArg < 1) {
|
|
/* Missing arguments,return FALSE */
|
|
ph7_result_bool(pCtx, 0);
|
|
return PH7_OK;
|
|
}
|
|
/* Make sure we are dealing with a valid hashmap */
|
|
if(!ph7_value_is_array(apArg[0])) {
|
|
/* Invalid argument,return FALSE */
|
|
ph7_result_bool(pCtx, 0);
|
|
return PH7_OK;
|
|
}
|
|
/* Point to the internal representation of the input hashmap */
|
|
pMap = (ph7_hashmap *)apArg[0]->x.pOther;
|
|
/* Point to the first node */
|
|
pMap->pCur = pMap->pFirst;
|
|
/* Return the last node value if available */
|
|
HashmapCurrentValue(&(*pCtx), pMap, 0);
|
|
return PH7_OK;
|
|
}
|
|
/*
|
|
* value key(array $array)
|
|
* Fetch a key from an array
|
|
* Parameter
|
|
* $input
|
|
* The input array.
|
|
* Return
|
|
* The key() function simply returns the key of the array element that's currently
|
|
* being pointed to by the internal pointer. It does not move the pointer in any way.
|
|
* If the internal pointer points beyond the end of the elements list or the array
|
|
* is empty, key() returns NULL.
|
|
*/
|
|
static int ph7_hashmap_simple_key(ph7_context *pCtx, int nArg, ph7_value **apArg) {
|
|
ph7_hashmap_node *pCur;
|
|
ph7_hashmap *pMap;
|
|
if(nArg < 1) {
|
|
/* Missing arguments,return NULL */
|
|
ph7_result_null(pCtx);
|
|
return PH7_OK;
|
|
}
|
|
/* Make sure we are dealing with a valid hashmap */
|
|
if(!ph7_value_is_array(apArg[0])) {
|
|
/* Invalid argument,return NULL */
|
|
ph7_result_null(pCtx);
|
|
return PH7_OK;
|
|
}
|
|
pMap = (ph7_hashmap *)apArg[0]->x.pOther;
|
|
pCur = pMap->pCur;
|
|
if(pCur == 0) {
|
|
/* Cursor does not point to anything,return NULL */
|
|
ph7_result_null(pCtx);
|
|
return PH7_OK;
|
|
}
|
|
if(pCur->iType == HASHMAP_INT_NODE) {
|
|
/* Key is integer */
|
|
ph7_result_int64(pCtx, pCur->xKey.iKey);
|
|
} else {
|
|
/* Key is blob */
|
|
ph7_result_string(pCtx,
|
|
(const char *)SyBlobData(&pCur->xKey.sKey), (int)SyBlobLength(&pCur->xKey.sKey));
|
|
}
|
|
return PH7_OK;
|
|
}
|
|
/*
|
|
* array each(array $input)
|
|
* Return the current key and value pair from an array and advance the array cursor.
|
|
* Parameter
|
|
* $input
|
|
* The input array.
|
|
* Return
|
|
* Returns the current key and value pair from the array array. This pair is returned
|
|
* in a four-element array, with the keys 0, 1, key, and value. Elements 0 and key
|
|
* contain the key name of the array element, and 1 and value contain the data.
|
|
* If the internal pointer for the array points past the end of the array contents
|
|
* each() returns FALSE.
|
|
*/
|
|
static int ph7_hashmap_each(ph7_context *pCtx, int nArg, ph7_value **apArg) {
|
|
ph7_hashmap_node *pCur;
|
|
ph7_hashmap *pMap;
|
|
ph7_value *pArray;
|
|
ph7_value *pVal;
|
|
ph7_value sKey;
|
|
if(nArg < 1) {
|
|
/* Missing arguments,return FALSE */
|
|
ph7_result_bool(pCtx, 0);
|
|
return PH7_OK;
|
|
}
|
|
/* Make sure we are dealing with a valid hashmap */
|
|
if(!ph7_value_is_array(apArg[0])) {
|
|
/* Invalid argument,return FALSE */
|
|
ph7_result_bool(pCtx, 0);
|
|
return PH7_OK;
|
|
}
|
|
/* Point to the internal representation that describe the input hashmap */
|
|
pMap = (ph7_hashmap *)apArg[0]->x.pOther;
|
|
if(pMap->pCur == 0) {
|
|
/* Cursor does not point to anything,return FALSE */
|
|
ph7_result_bool(pCtx, 0);
|
|
return PH7_OK;
|
|
}
|
|
pCur = pMap->pCur;
|
|
/* Create a new array */
|
|
pArray = ph7_context_new_array(pCtx);
|
|
if(pArray == 0) {
|
|
ph7_result_bool(pCtx, 0);
|
|
return PH7_OK;
|
|
}
|
|
pVal = HashmapExtractNodeValue(pCur);
|
|
/* Insert the current value */
|
|
ph7_array_add_intkey_elem(pArray, 1, pVal);
|
|
ph7_array_add_strkey_elem(pArray, "value", pVal);
|
|
/* Make the key */
|
|
if(pCur->iType == HASHMAP_INT_NODE) {
|
|
PH7_MemObjInitFromInt(pMap->pVm, &sKey, pCur->xKey.iKey);
|
|
} else {
|
|
PH7_MemObjInitFromString(pMap->pVm, &sKey, 0);
|
|
PH7_MemObjStringAppend(&sKey, (const char *)SyBlobData(&pCur->xKey.sKey), SyBlobLength(&pCur->xKey.sKey));
|
|
}
|
|
/* Insert the current key */
|
|
ph7_array_add_intkey_elem(pArray, 0, &sKey);
|
|
ph7_array_add_strkey_elem(pArray, "key", &sKey);
|
|
PH7_MemObjRelease(&sKey);
|
|
/* Advance the cursor */
|
|
pMap->pCur = pCur->pPrev; /* Reverse link */
|
|
/* Return the current entry */
|
|
ph7_result_value(pCtx, pArray);
|
|
return PH7_OK;
|
|
}
|
|
/*
|
|
* array range(int $start,int $limit,int $step)
|
|
* Create an array containing a range of elements
|
|
* Parameter
|
|
* start
|
|
* First value of the sequence.
|
|
* limit
|
|
* The sequence is ended upon reaching the limit value.
|
|
* step
|
|
* If a step value is given, it will be used as the increment between elements in the sequence.
|
|
* step should be given as a positive number. If not specified, step will default to 1.
|
|
* Return
|
|
* An array of elements from start to limit, inclusive.
|
|
* NOTE:
|
|
* Only 32/64 bit integer key is supported.
|
|
*/
|
|
static int ph7_hashmap_range(ph7_context *pCtx, int nArg, ph7_value **apArg) {
|
|
ph7_value *pValue, *pArray;
|
|
sxi64 iOfft, iLimit;
|
|
int iStep = 1;
|
|
iOfft = iLimit = 0; /* cc -O6 */
|
|
if(nArg > 0) {
|
|
/* Extract the offset */
|
|
iOfft = ph7_value_to_int64(apArg[0]);
|
|
if(nArg > 1) {
|
|
/* Extract the limit */
|
|
iLimit = ph7_value_to_int64(apArg[1]);
|
|
if(nArg > 2) {
|
|
/* Extract the increment */
|
|
iStep = ph7_value_to_int(apArg[2]);
|
|
if(iStep < 1) {
|
|
/* Only positive number are allowed */
|
|
iStep = 1;
|
|
}
|
|
}
|
|
}
|
|
}
|
|
/* Element container */
|
|
pValue = ph7_context_new_scalar(pCtx);
|
|
/* Create the new array */
|
|
pArray = ph7_context_new_array(pCtx);
|
|
if(pArray == 0) {
|
|
ph7_result_null(pCtx);
|
|
return PH7_OK;
|
|
}
|
|
/* Start filling */
|
|
while(iOfft <= iLimit) {
|
|
ph7_value_int64(pValue, iOfft);
|
|
/* Perform the insertion */
|
|
ph7_array_add_elem(pArray, 0/* Automatic index assign*/, pValue);
|
|
/* Increment */
|
|
iOfft += iStep;
|
|
}
|
|
/* Return the new array */
|
|
ph7_result_value(pCtx, pArray);
|
|
/* Dont' worry about freeing 'pValue',it will be released automatically
|
|
* by the virtual machine as soon we return from this foreign function.
|
|
*/
|
|
return PH7_OK;
|
|
}
|
|
/*
|
|
* array array_values(array $input)
|
|
* Returns all the values from the input array and indexes numerically the array.
|
|
* Parameters
|
|
* input: The input array.
|
|
* Return
|
|
* An indexed array of values or NULL on failure.
|
|
*/
|
|
static int ph7_hashmap_values(ph7_context *pCtx, int nArg, ph7_value **apArg) {
|
|
ph7_hashmap_node *pNode;
|
|
ph7_hashmap *pMap;
|
|
ph7_value *pArray;
|
|
ph7_value *pObj;
|
|
sxu32 n;
|
|
if(nArg < 1) {
|
|
/* Missing arguments,return NULL */
|
|
ph7_result_null(pCtx);
|
|
return PH7_OK;
|
|
}
|
|
/* Make sure we are dealing with a valid hashmap */
|
|
if(!ph7_value_is_array(apArg[0])) {
|
|
/* Invalid argument,return NULL */
|
|
ph7_result_null(pCtx);
|
|
return PH7_OK;
|
|
}
|
|
/* Point to the internal representation that describe the input hashmap */
|
|
pMap = (ph7_hashmap *)apArg[0]->x.pOther;
|
|
/* Create a new array */
|
|
pArray = ph7_context_new_array(pCtx);
|
|
if(pArray == 0) {
|
|
ph7_result_null(pCtx);
|
|
return PH7_OK;
|
|
}
|
|
/* Perform the requested operation */
|
|
pNode = pMap->pFirst;
|
|
for(n = 0 ; n < pMap->nEntry ; ++n) {
|
|
pObj = HashmapExtractNodeValue(pNode);
|
|
if(pObj) {
|
|
/* perform the insertion */
|
|
ph7_array_add_elem(pArray, 0/* Automatic index assign */, pObj);
|
|
}
|
|
/* Point to the next entry */
|
|
pNode = pNode->pPrev; /* Reverse link */
|
|
}
|
|
/* return the new array */
|
|
ph7_result_value(pCtx, pArray);
|
|
return PH7_OK;
|
|
}
|
|
/*
|
|
* array array_keys(array $input [, val $search_value [, bool $strict = false ]] )
|
|
* Return all the keys or a subset of the keys of an array.
|
|
* Parameters
|
|
* $input
|
|
* An array containing keys to return.
|
|
* $search_value
|
|
* If specified, then only keys containing these values are returned.
|
|
* $strict
|
|
* Determines if strict comparison (===) should be used during the search.
|
|
* Return
|
|
* An array of all the keys in input or NULL on failure.
|
|
*/
|
|
static int ph7_hashmap_keys(ph7_context *pCtx, int nArg, ph7_value **apArg) {
|
|
ph7_hashmap_node *pNode;
|
|
ph7_hashmap *pMap;
|
|
ph7_value *pArray;
|
|
ph7_value sObj;
|
|
ph7_value sVal;
|
|
SyString sKey;
|
|
int bStrict;
|
|
sxi32 rc;
|
|
sxu32 n;
|
|
if(nArg < 1) {
|
|
/* Missing arguments,return NULL */
|
|
ph7_result_null(pCtx);
|
|
return PH7_OK;
|
|
}
|
|
/* Make sure we are dealing with a valid hashmap */
|
|
if(!ph7_value_is_array(apArg[0])) {
|
|
/* Invalid argument,return NULL */
|
|
ph7_result_null(pCtx);
|
|
return PH7_OK;
|
|
}
|
|
/* Point to the internal representation of the input hashmap */
|
|
pMap = (ph7_hashmap *)apArg[0]->x.pOther;
|
|
/* Create a new array */
|
|
pArray = ph7_context_new_array(pCtx);
|
|
if(pArray == 0) {
|
|
ph7_result_null(pCtx);
|
|
return PH7_OK;
|
|
}
|
|
bStrict = FALSE;< |