All JSON to understand floating point literals "Inf" and "QNaN" and "SNaN" in

any case, without the SQLITE_EXTENDED_NAN_INF compile-time option.  This
extension is always available.

FossilOrigin-Name: fb551145e0d84213b3343dc1bc7db70c898b9dea24a72b968240617f4b52d821

manifest

@@ -1,5 +1,5 @@
-C Omit\sthe\sjson_valid()\sfunction.\s\sChange\sthe\sname\sof\sjson_error()\sto\njson_error_position().\s\sUse\s"NOT\sjson_error_position(X)"\sas\sa\ssubstitute\nfor\s"json_valid5(X)".
-D 2023-04-30T19:34:41.159
+C All\sJSON\sto\sunderstand\sfloating\spoint\sliterals\s"Inf"\sand\s"QNaN"\sand\s"SNaN"\sin\nany\scase,\swithout\sthe\sSQLITE_EXTENDED_NAN_INF\scompile-time\soption.\s\sThis\nextension\sis\salways\savailable.
+D 2023-04-30T19:45:25.975
 F .fossil-settings/empty-dirs dbb81e8fc0401ac46a1491ab34a7f2c7c0452f2f06b54ebb845d024ca8283ef1
 F .fossil-settings/ignore-glob 35175cdfcf539b2318cb04a9901442804be81cd677d8b889fcc9149c21f239ea
 F LICENSE.md df5091916dbb40e6e9686186587125e1b2ff51f022cc334e886c19a0e9982724
@@ -595,7 +595,7 @@ F src/hash.h 3340ab6e1d13e725571d7cee6d3e3135f0779a7d8e76a9ce0a85971fa3953c51
 F src/hwtime.h b638809e083b601b618df877b2e89cb87c2a47a01f4def10be4c4ebb54664ac7
 F src/in-operator.md 10cd8f4bcd225a32518407c2fb2484089112fd71
 F src/insert.c a8de1db43335fc4946370a7a7e47d89975ad678ddb15078a150e993ba2fb37d4
-F src/json.c d216510dbb7900072e4a0cbb1273a21e0a20db57da405b4397abb236a2f30392
+F src/json.c bd22944b15d786a7a17f0faa672cdb3abeef1b59c505684df64caaca2a18a03a
 F src/legacy.c d7874bc885906868cd51e6c2156698f2754f02d9eee1bae2d687323c3ca8e5aa
 F src/loadext.c be5af440f3192c58681b5d43167dbca3ccbfce394d89faa22378a14264781136
 F src/main.c 09bc5191f75dc48fc4dfddda143cb864c0c3dbc3297eb9a9c8e01fea58ff847d
@@ -2068,8 +2068,8 @@ F vsixtest/vsixtest.tcl 6a9a6ab600c25a91a7acc6293828957a386a8a93
 F vsixtest/vsixtest.vcxproj.data 2ed517e100c66dc455b492e1a33350c1b20fbcdc
 F vsixtest/vsixtest.vcxproj.filters 37e51ffedcdb064aad6ff33b6148725226cd608e
 F vsixtest/vsixtest_TemporaryKey.pfx e5b1b036facdb453873e7084e1cae9102ccc67a0
-P 30d12edebad9b097cd5f0da355304d1cb2f8b70d7c7dff378fd7ad7c8ebf9279
-R 5a03c0d318d1b5343d158677e6158a89
+P 34c4e900a9cc51630eeaf01deef74bf5b18d66e0ab1dc61a2023ac8f837a5197
+R 6addb4498a8cf4456a809d957c22b7a6
 U drh
-Z 50768d32c83122dec00455a3ce19a1c8
+Z 050299ed4706f61a98d79f7a5528f481
 # Remove this line to create a well-formed Fossil manifest.

manifest.uuid

@@ -1 +1 @@
-34c4e900a9cc51630eeaf01deef74bf5b18d66e0ab1dc61a2023ac8f837a5197
+fb551145e0d84213b3343dc1bc7db70c898b9dea24a72b968240617f4b52d821

src/json.c

@@ -1029,8 +1029,6 @@ static int json5Whitespace(const char *zIn){
   return n;
 }
 
-
-#ifdef SQLITE_EXTENDED_NAN_INF
 /*
 ** Extra floating-point literals to allow in JSON.
 */
@@ -1049,7 +1047,6 @@ static const struct NanInfName {
   { 'q', 'Q', 4, JSON_NULL, 4, "QNaN", "null" },
   { 's', 'S', 4, JSON_NULL, 4, "SNaN", "null" },
 }; 
-#endif /* SQLITE_EXTENDED_NAN_INF */
 
 /*
 ** Parse a single JSON value which begins at pParse->zJson[i].  Return the
@@ -1336,28 +1333,20 @@ json_parse_restart:
         }
       }else{
         if( !sqlite3Isdigit(z[i+1]) ){
-          if( z[i+1]=='I' && strncmp(&z[i+1], "Infinity",8)==0 ){
-            if( z[i]=='-' ){
-              jsonParseAddNode(pParse, JSON_REAL, 8, "-9.0e999");
-            }else{
-              jsonParseAddNode(pParse, JSON_REAL, 7, "9.0e999");
-            }
-            return i+9;
-          }
-#ifdef SQLITE_EXTENDED_NAN_INF
-          /* Non-standard JSON and JSON5:  Allow "Inf" as an alternative
-          ** spelling for "Infinity" and allow it to be in any case. */
+          /* JSON5 allows for "+Infinity" and "-Infinity" using exactly
+          ** that case.  SQLite also allows these in any case and it allows
+          ** "+inf" and "-inf". */
           if( (z[i+1]=='I' || z[i+1]=='i')
            && sqlite3StrNICmp(&z[i+1], "inf",3)==0
           ){
+            pParse->hasNonstd = 1;
             if( z[i]=='-' ){
               jsonParseAddNode(pParse, JSON_REAL, 8, "-9.0e999");
             }else{
               jsonParseAddNode(pParse, JSON_REAL, 7, "9.0e999");
             }
-            return i+4;
+            return i + (sqlite3StrNICmp(&z[i+4],"inity",5)==0 ? 9 : 4);
           }
-#endif
           if( z[i+1]=='.' ){
             pParse->hasNonstd = 1;
             jnFlags |= JNODE_JSON5;
@@ -1433,24 +1422,6 @@ json_parse_restart:
     jsonParseAddNode(pParse, seenDP | (jnFlags<<8), j - i, &z[i]);
     return j;
   }
-  case 'N': {
-    if( strncmp(&z[i],"NaN",3)==0 ){
-      jsonParseAddNode(pParse, JSON_NULL, 4, "null");
-      pParse->hasNonstd = 1;
-      return i+3;
-    }
-    pParse->iErr = i;
-    return -1;
-  }
-  case 'I': {
-    if( strncmp(&z[i],"Infinity",8)==0 ){
-      jsonParseAddNode(pParse, JSON_REAL, 7, "9.0e999");
-      pParse->hasNonstd = 1;
-      return i+8;
-    }
-    pParse->iErr = i;
-    return -1;
-  }
   case '}': {
     pParse->iErr = i;
     return -2;  /* End of {...} */
@@ -1497,7 +1468,6 @@ json_parse_restart:
     return -1;
   }
   default: {
-#ifdef SQLITE_EXTENDED_NAN_INF
     int k, nn;
     c = z[i];
     for(k=0; k<sizeof(aNanInfName)/sizeof(aNanInfName[0]); k++){
@@ -1509,9 +1479,9 @@ json_parse_restart:
       if( sqlite3Isalnum(z[i+nn]) ) continue;
       jsonParseAddNode(pParse, aNanInfName[k].eType,
           aNanInfName[k].nRepl, aNanInfName[k].zRepl);
+      pParse->hasNonstd = 1;
       return i + nn;
     }
-#endif
     pParse->iErr = i;
     return -1;  /* Syntax error */
   }