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Overview
| Comment: | Futher simplifications to json1.c. Also an obscure bug-fix in the initial output of json_tree() when using a path to an object contained within an array. |
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| Downloads: | Tarball | ZIP archive | SQL archive |
| Timelines: | family | ancestors | descendants | both | trunk |
| Files: | files | file ages | folders |
| SHA1: |
fcb1e327a64134e5ac539ec3d5273342 |
| User & Date: | drh 2015-09-22 01:15:49 |
Context
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2015-09-22
| ||
| 17:46 | Fix a typo in the --help screen of the fuzzcheck utility. check-in: b6ae61fe user: drh tags: trunk | |
| 01:15 | Futher simplifications to json1.c. Also an obscure bug-fix in the initial output of json_tree() when using a path to an object contained within an array. check-in: fcb1e327 user: drh tags: trunk | |
| 00:21 | Fix json_set() so that it can overwrite a value that was previously overwritten during the same call. check-in: 0f160416 user: drh tags: trunk | |
Changes
Changes to ext/misc/json1.c.
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jsonZero(p);
}
/* Report an out-of-memory (OOM) condition
*/
static void jsonOom(JsonString *p){
if( !p->bErr ){
p->bErr = 1;
sqlite3_result_error_nomem(p->pCtx);
jsonReset(p);
}
}
/* Enlarge pJson->zBuf so that it can hold at least N more bytes.
** Return zero on success. Return non-zero on an OOM error
*/
static int jsonGrow(JsonString *p, u32 N){
u64 nTotal = N<p->nAlloc ? p->nAlloc*2 : p->nAlloc+N+10;
................................................................................
){
JsonNode *p;
if( pParse->nNode>=pParse->nAlloc ){
u32 nNew;
JsonNode *pNew;
if( pParse->oom ) return -1;
nNew = pParse->nAlloc*2 + 10;
if( nNew<=pParse->nNode ){
pParse->oom = 1;
return -1;
}
pNew = sqlite3_realloc(pParse->aNode, sizeof(JsonNode)*nNew);
if( pNew==0 ){
pParse->oom = 1;
return -1;
}
pParse->nAlloc = nNew;
pParse->aNode = pNew;
................................................................................
pParse->aNode[iLabel].jnFlags |= JNODE_RAW;
}
return pNode;
}
}else if( zPath[0]=='[' && safe_isdigit(zPath[1]) ){
if( pRoot->eType!=JSON_ARRAY ) return 0;
i = 0;
zPath++;
while( safe_isdigit(zPath[0]) ){
i = i*10 + zPath[0] - '0';
zPath++;
}
if( zPath[0]!=']' ){
*pzErr = zPath;
return 0;
}
zPath++;
j = 1;
for(;;){
while( j<=pRoot->n && (i>0 || (pRoot[j].jnFlags & JNODE_REMOVE)!=0) ){
if( (pRoot[j].jnFlags & JNODE_REMOVE)==0 ) i--;
j += jsonNodeSize(&pRoot[j]);
}
if( (pRoot->jnFlags & JNODE_APPEND)==0 ) break;
................................................................................
if( pNode ){
pRoot = &pParse->aNode[iRoot];
pRoot->u.iAppend = iStart - iRoot;
pRoot->jnFlags |= JNODE_APPEND;
}
return pNode;
}
}else if( zPath[0]!=0 ){
*pzErr = zPath;
}
return 0;
}
/*
** Append content to pParse that will complete zPath. Return a pointer
................................................................................
}
case JEACH_ROOT: {
const char *zRoot = p->zRoot;
if( zRoot==0 ) zRoot = "$";
sqlite3_result_text(ctx, zRoot, -1, SQLITE_STATIC);
break;
}
default: {
assert( i==JEACH_JSON );
sqlite3_result_text(ctx, p->sParse.zJson, -1, SQLITE_STATIC);
break;
}
}
return SQLITE_OK;
}
................................................................................
}
p->iBegin = p->i = (int)(pNode - p->sParse.aNode);
p->eType = pNode->eType;
if( p->eType>=JSON_ARRAY ){
pNode->u.iKey = 0;
p->iEnd = p->i + pNode->n + 1;
if( p->bRecursive ){
if( p->i>0 && (p->sParse.aNode[p->i-1].jnFlags & JNODE_LABEL)!=0 ){
p->i--;
}
}else{
p->i++;
}
}else{
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jsonZero(p);
}
/* Report an out-of-memory (OOM) condition
*/
static void jsonOom(JsonString *p){
p->bErr = 1;
sqlite3_result_error_nomem(p->pCtx);
jsonReset(p);
}
/* Enlarge pJson->zBuf so that it can hold at least N more bytes.
** Return zero on success. Return non-zero on an OOM error
*/
static int jsonGrow(JsonString *p, u32 N){
u64 nTotal = N<p->nAlloc ? p->nAlloc*2 : p->nAlloc+N+10;
................................................................................
){
JsonNode *p;
if( pParse->nNode>=pParse->nAlloc ){
u32 nNew;
JsonNode *pNew;
if( pParse->oom ) return -1;
nNew = pParse->nAlloc*2 + 10;
pNew = sqlite3_realloc(pParse->aNode, sizeof(JsonNode)*nNew);
if( pNew==0 ){
pParse->oom = 1;
return -1;
}
pParse->nAlloc = nNew;
pParse->aNode = pNew;
................................................................................
pParse->aNode[iLabel].jnFlags |= JNODE_RAW;
}
return pNode;
}
}else if( zPath[0]=='[' && safe_isdigit(zPath[1]) ){
if( pRoot->eType!=JSON_ARRAY ) return 0;
i = 0;
j = 1;
while( safe_isdigit(zPath[j]) ){
i = i*10 + zPath[j] - '0';
j++;
}
if( zPath[j]!=']' ){
*pzErr = zPath;
return 0;
}
zPath += j + 1;
j = 1;
for(;;){
while( j<=pRoot->n && (i>0 || (pRoot[j].jnFlags & JNODE_REMOVE)!=0) ){
if( (pRoot[j].jnFlags & JNODE_REMOVE)==0 ) i--;
j += jsonNodeSize(&pRoot[j]);
}
if( (pRoot->jnFlags & JNODE_APPEND)==0 ) break;
................................................................................
if( pNode ){
pRoot = &pParse->aNode[iRoot];
pRoot->u.iAppend = iStart - iRoot;
pRoot->jnFlags |= JNODE_APPEND;
}
return pNode;
}
}else{
*pzErr = zPath;
}
return 0;
}
/*
** Append content to pParse that will complete zPath. Return a pointer
................................................................................
}
case JEACH_ROOT: {
const char *zRoot = p->zRoot;
if( zRoot==0 ) zRoot = "$";
sqlite3_result_text(ctx, zRoot, -1, SQLITE_STATIC);
break;
}
case JEACH_JSON: {
assert( i==JEACH_JSON );
sqlite3_result_text(ctx, p->sParse.zJson, -1, SQLITE_STATIC);
break;
}
}
return SQLITE_OK;
}
................................................................................
}
p->iBegin = p->i = (int)(pNode - p->sParse.aNode);
p->eType = pNode->eType;
if( p->eType>=JSON_ARRAY ){
pNode->u.iKey = 0;
p->iEnd = p->i + pNode->n + 1;
if( p->bRecursive ){
p->eType = p->sParse.aNode[p->sParse.aUp[p->i]].eType;
if( p->i>0 && (p->sParse.aNode[p->i-1].jnFlags & JNODE_LABEL)!=0 ){
p->i--;
}
}else{
p->i++;
}
}else{
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