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Overview
Comment:Avoid redundant edits in the json_merge_patch() function.
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SHA3-256: 4a8e6437dd610c5376a07867a73e5a7e2ea90357a018e1788ecce6f4e10bc939
User & Date: drh 2017-03-23 12:56:44.298
Context
2017-03-23
20:33
Change the name of the json_merge_patch() function to just json_patch(). (Closed-Leaf check-in: 04d4100445 user: drh tags: json_mergepatch)
12:56
Avoid redundant edits in the json_merge_patch() function. (check-in: 4a8e6437dd user: drh tags: json_mergepatch)
00:46
Fix harmless compiler warnings in the new json_merge_patch() logic. (check-in: 5d2cf5a2f8 user: drh tags: json_mergepatch)
Changes
Unified Diff Ignore Whitespace Patch
Changes to ext/misc/json1.c.
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    nKey = pPatch[i].n;
    zKey = pPatch[i].u.zJContent;
    assert( (pPatch[i].jnFlags & JNODE_RAW)==0 );
    for(j=1; j<pTarget->n; j += jsonNodeSize(&pTarget[j+1])+1 ){
      assert( pTarget[j].eType==JSON_STRING );
      assert( pTarget[j].jnFlags & JNODE_LABEL );
      assert( (pPatch[i].jnFlags & JNODE_RAW)==0 );

      if( (pTarget[j+1].jnFlags & (JNODE_REMOVE|JNODE_PATCH))==0
       && pTarget[j].n==nKey 
       && strncmp(pTarget[j].u.zJContent, zKey, nKey)==0
      ){
        if( pPatch[i+1].eType==JSON_NULL ){
          pTarget[j+1].jnFlags |= JNODE_REMOVE;
        }else{
          JsonNode *pNew = jsonMergePatch(pParse, iTarget+j+1, &pPatch[i+1]);
          if( pNew==0 ) return 0;
          pTarget = &pParse->aNode[iTarget];
          if( pNew!=&pTarget[j+1] ){








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    nKey = pPatch[i].n;
    zKey = pPatch[i].u.zJContent;
    assert( (pPatch[i].jnFlags & JNODE_RAW)==0 );
    for(j=1; j<pTarget->n; j += jsonNodeSize(&pTarget[j+1])+1 ){
      assert( pTarget[j].eType==JSON_STRING );
      assert( pTarget[j].jnFlags & JNODE_LABEL );
      assert( (pPatch[i].jnFlags & JNODE_RAW)==0 );
      if( pTarget[j].n==nKey && strncmp(pTarget[j].u.zJContent,zKey,nKey)==0 ){
        if( pTarget[j+1].jnFlags & (JNODE_REMOVE|JNODE_PATCH) ) break;



        if( pPatch[i+1].eType==JSON_NULL ){
          pTarget[j+1].jnFlags |= JNODE_REMOVE;
        }else{
          JsonNode *pNew = jsonMergePatch(pParse, iTarget+j+1, &pPatch[i+1]);
          if( pNew==0 ) return 0;
          pTarget = &pParse->aNode[iTarget];
          if( pNew!=&pTarget[j+1] ){
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