Use JsonbIteratorToken consistently in automatic variable declarations.

Many functions stored JsonbIteratorToken values in variables of other
integer types.  Also, standardize order relative to other declarations.
Expect compilers to generate the same code before and after this change.

Author: nmisch

src/backend/utils/adt/jsonb.c

@@ -372,8 +372,8 @@ JsonbToCString(StringInfo out, JsonbContainer *in, int estimated_len)
 {
 	bool		first = true;
 	JsonbIterator *it;
-	JsonbIteratorToken type = WJB_DONE;
 	JsonbValue	v;
+	JsonbIteratorToken type = WJB_DONE;
 	int			level = 0;
 	bool		redo_switch = false;
 

src/backend/utils/adt/jsonb_gin.c

@@ -70,8 +70,8 @@ gin_extract_jsonb(PG_FUNCTION_ARGS)
 	int			total = 2 * JB_ROOT_COUNT(jb);
 	JsonbIterator *it;
 	JsonbValue	v;
-	int			i = 0,
-				r;
+	JsonbIteratorToken r;
+	int			i = 0;
 	Datum	   *entries;
 
 	/* If the root level is empty, we certainly have no keys */
@@ -333,10 +333,10 @@ gin_extract_jsonb_path(PG_FUNCTION_ARGS)
 	int			total = 2 * JB_ROOT_COUNT(jb);
 	JsonbIterator *it;
 	JsonbValue	v;
+	JsonbIteratorToken r;
 	PathHashStack tail;
 	PathHashStack *stack;
-	int			i = 0,
-				r;
+	int			i = 0;
 	Datum	   *entries;
 
 	/* If the root level is empty, we certainly have no keys */
@@ -429,7 +429,7 @@ gin_extract_jsonb_path(PG_FUNCTION_ARGS)
 				stack = parent;
 				break;
 			default:
-				elog(ERROR, "invalid JsonbIteratorNext rc: %d", r);
+				elog(ERROR, "invalid JsonbIteratorNext rc: %d", (int) r);
 		}
 	}
 

src/backend/utils/adt/jsonb_op.c

@@ -254,8 +254,8 @@ jsonb_hash(PG_FUNCTION_ARGS)
 {
 	Jsonb	   *jb = PG_GETARG_JSONB(0);
 	JsonbIterator *it;
-	int32		r;
 	JsonbValue	v;
+	JsonbIteratorToken r;
 	uint32		hash = 0;
 
 	if (JB_ROOT_COUNT(jb) == 0)
@@ -283,7 +283,7 @@ jsonb_hash(PG_FUNCTION_ARGS)
 			case WJB_END_OBJECT:
 				break;
 			default:
-				elog(ERROR, "invalid JsonbIteratorNext rc: %d", r);
+				elog(ERROR, "invalid JsonbIteratorNext rc: %d", (int) r);
 		}
 	}
 

src/backend/utils/adt/jsonb_util.c

@@ -187,7 +187,7 @@ compareJsonbContainers(JsonbContainer *a, JsonbContainer *b)
 	{
 		JsonbValue	va,
 					vb;
-		int			ra,
+		JsonbIteratorToken ra,
 					rb;
 
 		ra = JsonbIteratorNext(&ita, &va, false);
@@ -961,10 +961,10 @@ freeAndGetParent(JsonbIterator *it)
 bool
 JsonbDeepContains(JsonbIterator **val, JsonbIterator **mContained)
 {
-	uint32		rval,
-				rcont;
 	JsonbValue	vval,
 				vcontained;
+	JsonbIteratorToken rval,
+				rcont;
 
 	/*
 	 * Guard against stack overflow due to overly complex Jsonb.

src/backend/utils/adt/jsonfuncs.c

@@ -255,7 +255,7 @@ jsonb_object_keys(PG_FUNCTION_ARGS)
 		bool		skipNested = false;
 		JsonbIterator *it;
 		JsonbValue	v;
-		int			r;
+		JsonbIteratorToken r;
 
 		if (JB_ROOT_IS_SCALAR(jb))
 			ereport(ERROR,
@@ -1195,7 +1195,7 @@ get_jsonb_path_all(FunctionCallInfo fcinfo, bool as_text)
 		if (jbvp->type == jbvBinary)
 		{
 			JsonbIterator *it = JsonbIteratorInit((JsonbContainer *) jbvp->val.binary.data);
-			int			r;
+			JsonbIteratorToken r;
 
 			r = JsonbIteratorNext(&it, &tv, true);
 			container = (JsonbContainer *) jbvp->val.binary.data;
@@ -1368,7 +1368,7 @@ each_worker_jsonb(FunctionCallInfo fcinfo, const char *funcname, bool as_text)
 	bool		skipNested = false;
 	JsonbIterator *it;
 	JsonbValue	v;
-	int			r;
+	JsonbIteratorToken r;
 
 	if (!JB_ROOT_IS_OBJECT(jb))
 		ereport(ERROR,
@@ -1687,7 +1687,7 @@ elements_worker_jsonb(FunctionCallInfo fcinfo, const char *funcname,
 	bool		skipNested = false;
 	JsonbIterator *it;
 	JsonbValue	v;
-	int			r;
+	JsonbIteratorToken r;
 
 	if (JB_ROOT_IS_SCALAR(jb))
 		ereport(ERROR,
@@ -2704,7 +2704,7 @@ populate_recordset_worker(FunctionCallInfo fcinfo, const char *funcname,
 		JsonbIterator *it;
 		JsonbValue	v;
 		bool		skipNested = false;
-		int			r;
+		JsonbIteratorToken r;
 
 		Assert(jtype == JSONBOID);