Fix sign comparison warnings

When running with `-Wsign-compare` we're raising a lot of
signed/unsigned comparison warnings.

10 files changed, 34 insertions, 58 deletions

diff --git a/json-glib/json-array.c b/json-glib/json-array.c
index b242ce7..200cd92 100644
--- a/json-glib/json-array.c
+++ b/json-glib/json-array.c
@@ -731,12 +731,10 @@ json_array_foreach_element (JsonArray        *array,
                             JsonArrayForeach  func,
                             gpointer          data)
 {
-  gint i;
-
   g_return_if_fail (array != NULL);
   g_return_if_fail (func != NULL);
 
-  for (i = 0; i < array->elements->len; i++)
+  for (guint i = 0; i < array->elements->len; i++)
     {
       JsonNode *element_node;
 
diff --git a/json-glib/json-gvariant.c b/json-glib/json-gvariant.c
index 15f03f5..31c8e13 100644
--- a/json-glib/json-gvariant.c
+++ b/json-glib/json-gvariant.c
@@ -529,7 +529,7 @@ json_to_gvariant_tuple (JsonNode     *json_node,
 {
   GVariant *variant = NULL;
   JsonArray *array;
-  gint i;
+  guint i;
   GList *children = NULL;
   gboolean roll_back = FALSE;
   const gchar *initial_signature;
@@ -737,7 +737,7 @@ json_to_gvariant_array (JsonNode     *json_node,
 
   if (json_array_get_length (array) > 0)
     {
-      gint i;
+      guint i;
       guint len;
 
       len = json_array_get_length (array);
diff --git a/json-glib/json-parser.c b/json-glib/json-parser.c
index c5e58f4..1162ac6 100644
--- a/json-glib/json-parser.c
+++ b/json-glib/json-parser.c
@@ -950,7 +950,6 @@ static JsonScanner *
 json_scanner_create (JsonParser *parser)
 {
   JsonScanner *scanner;
-  gint i;
 
   scanner = json_scanner_new ();
   scanner->msg_handler = json_scanner_msg_handler;
@@ -960,7 +959,7 @@ json_scanner_create (JsonParser *parser)
    * we cannot move them into JsonScanner without moving a bunch of code
    * as well
    */
-  for (i = 0; i < n_symbols; i++)
+  for (guint i = 0; i < n_symbols; i++)
     {
       json_scanner_scope_add_symbol (scanner, 0,
                                      symbol_names + symbols[i].name_offset,
@@ -1011,7 +1010,6 @@ json_parser_load (JsonParser   *parser,
   JsonScanner *scanner;
   gboolean done;
   gboolean retval = TRUE;
-  gint i;
   gchar *data = input_data;
 
   json_parser_clear (parser);
@@ -1053,7 +1051,7 @@ json_parser_load (JsonParser   *parser,
       else
         {
           guint expected_token;
-          gint cur_token;
+          guint cur_token;
 
           /* we try to show the expected token, if possible */
           expected_token = json_parse_statement (parser, scanner);
@@ -1071,7 +1069,7 @@ json_parser_load (JsonParser   *parser,
                   if (expected_token > JSON_TOKEN_INVALID &&
                       expected_token < JSON_TOKEN_LAST)
                     {
-                      for (i = 0; i < n_symbols; i++)
+                      for (guint i = 0; i < n_symbols; i++)
                         if (symbols[i].token == expected_token)
                           symbol_name = symbol_names + symbols[i].name_offset;
 
@@ -1084,7 +1082,7 @@ json_parser_load (JsonParser   *parser,
                     {
                       symbol_name = "???";
 
-                      for (i = 0; i < n_symbols; i++)
+                      for (guint i = 0; i < n_symbols; i++)
                         if (symbols[i].token == cur_token)
                           symbol_name = symbol_names + symbols[i].name_offset;
                     }
diff --git a/json-glib/json-path.c b/json-glib/json-path.c
index 86fe97f..a41d9b8 100644
--- a/json-glib/json-path.c
+++ b/json-glib/json-path.c
@@ -199,7 +199,7 @@ struct _PathNode
 
   union {
     /* JSON_PATH_NODE_CHILD_ELEMENT */
-    int element_index;
+    guint element_index;
 
     /* JSON_PATH_NODE_CHILD_MEMBER */
     char *member_name;
@@ -302,7 +302,7 @@ json_path_foreach_print (gpointer data,
       break;
 
     case JSON_PATH_NODE_CHILD_ELEMENT:
-      g_string_append_printf (buf, "<element '%d'", cur_node->data.element_index);
+      g_string_append_printf (buf, "<element '%u'", cur_node->data.element_index);
       break;
 
     case JSON_PATH_NODE_RECURSIVE_DESCENT:
@@ -781,7 +781,7 @@ walk_path_node (GList      *path,
             {
               JsonArray *array = json_node_get_array (root);
               GList *members, *l;
-              int i;
+              guint i;
 
               members = json_array_get_elements (array);
               for (l = members, i = 0; l != NULL; l = l->next, i += 1)
diff --git a/json-glib/tests/generator.c b/json-glib/tests/generator.c
index 833d8fc..f6ac0f1 100644
--- a/json-glib/tests/generator.c
+++ b/json-glib/tests/generator.c
@@ -297,7 +297,6 @@ test_decimal_separator (void)
   JsonNode *node = json_node_new (JSON_NODE_VALUE);
   JsonGenerator *generator = json_generator_new ();
   gchar *old_locale;
-  gint i;
 
   json_node_set_double (node, 3.14);
 
@@ -305,7 +304,7 @@ test_decimal_separator (void)
 
   old_locale = setlocale (LC_NUMERIC, NULL);
 
-  for (i = 0; i < G_N_ELEMENTS (decimal_separator); i++)
+  for (guint i = 0; i < G_N_ELEMENTS (decimal_separator); i++)
     {
       gchar *str, *expected;
 
@@ -434,10 +433,6 @@ int
 main (int   argc,
       char *argv[])
 {
-  gchar *escaped;
-  gchar *name;
-  gint i;
-
   g_test_init (&argc, &argv, NULL);
 
   g_test_add_func ("/generator/empty-array", test_empty_array);
@@ -450,10 +445,10 @@ main (int   argc,
   g_test_add_func ("/generator/double-stays-double", test_double_stays_double);
   g_test_add_func ("/generator/pretty", test_pretty);
 
-  for (i = 0; i < G_N_ELEMENTS (string_fixtures); i++)
+  for (guint i = 0; i < G_N_ELEMENTS (string_fixtures); i++)
     {
-      escaped = g_strescape (string_fixtures[i].str, NULL);
-      name = g_strdup_printf ("/generator/string/%s", escaped);
+      char *escaped = g_strescape (string_fixtures[i].str, NULL);
+      char *name = g_strdup_printf ("/generator/string/%s", escaped);
       g_test_add_data_func (name, string_fixtures + i, test_string_encode);
       g_free (escaped);
       g_free (name);
diff --git a/json-glib/tests/gvariant.c b/json-glib/tests/gvariant.c
index 3f2bc13..805da00 100644
--- a/json-glib/tests/gvariant.c
+++ b/json-glib/tests/gvariant.c
@@ -216,17 +216,13 @@ test_json_to_gvariant (gconstpointer test_data)
 gint
 main (gint argc, gchar *argv[])
 {
-  gint i;
-  TestCase test_case;
-  gchar *test_name;
-
   g_test_init (&argc, &argv, NULL);
 
   /* GVariant to JSON */
-  for (i = 0; i < G_N_ELEMENTS (two_way_test_cases); i++)
+  for (guint i = 0; i < G_N_ELEMENTS (two_way_test_cases); i++)
     {
-      test_case = two_way_test_cases[i];
-      test_name = g_strdup_printf ("/gvariant/to-json/%s", test_case.test_name);
+      TestCase test_case = two_way_test_cases[i];
+      char *test_name = g_strdup_printf ("/gvariant/to-json/%s", test_case.test_name);
 
       g_test_add_data_func (test_name, &two_way_test_cases[i], test_gvariant_to_json);
 
@@ -234,10 +230,10 @@ main (gint argc, gchar *argv[])
     }
 
   /* JSON to GVariant */
-  for (i = 0; i < G_N_ELEMENTS (two_way_test_cases); i++)
+  for (guint i = 0; i < G_N_ELEMENTS (two_way_test_cases); i++)
     {
-      test_case = two_way_test_cases[i];
-      test_name = g_strdup_printf ("/gvariant/from-json/%s", test_case.test_name);
+      TestCase test_case = two_way_test_cases[i];
+      char *test_name = g_strdup_printf ("/gvariant/from-json/%s", test_case.test_name);
 
       g_test_add_data_func (test_name, &two_way_test_cases[i], test_json_to_gvariant);
 
@@ -245,10 +241,10 @@ main (gint argc, gchar *argv[])
     }
 
   /* JSON to GVariant one way tests */
-  for (i = 0; i < G_N_ELEMENTS (json_to_gvariant_test_cases); i++)
+  for (guint i = 0; i < G_N_ELEMENTS (json_to_gvariant_test_cases); i++)
     {
-      test_case = json_to_gvariant_test_cases[i];
-      test_name = g_strdup_printf ("/gvariant/from-json/%s", test_case.test_name);
+      TestCase test_case = json_to_gvariant_test_cases[i];
+      char *test_name = g_strdup_printf ("/gvariant/from-json/%s", test_case.test_name);
 
       g_test_add_data_func (test_name, &json_to_gvariant_test_cases[i], test_json_to_gvariant);
 
diff --git a/json-glib/tests/invalid.c b/json-glib/tests/invalid.c
index 5197e9f..3cab2c2 100644
--- a/json-glib/tests/invalid.c
+++ b/json-glib/tests/invalid.c
@@ -252,11 +252,9 @@ int
 main (int   argc,
       char *argv[])
 {
-  int i;
-
   g_test_init (&argc, &argv, NULL);
 
-  for (i = 0; i < n_test_invalid; i++)
+  for (guint i = 0; i < n_test_invalid; i++)
     {
       char *test_path = g_strconcat ("/invalid/json/", test_invalid[i].path, NULL);
 
diff --git a/json-glib/tests/object.c b/json-glib/tests/object.c
index b5cab1a..90e8bca 100644
--- a/json-glib/tests/object.c
+++ b/json-glib/tests/object.c
@@ -140,9 +140,7 @@ verify_foreach (JsonObject  *object,
     }
   else
     {
-      int i;
-
-      for (i = 0; i < G_N_ELEMENTS (type_verify); i++)
+      for (guint i = 0; i < G_N_ELEMENTS (type_verify); i++)
         {
           if (strcmp (member_name, type_verify[i].member_name) == 0)
             {
diff --git a/json-glib/tests/parser.c b/json-glib/tests/parser.c
index c6ee421..bd23798 100644
--- a/json-glib/tests/parser.c
+++ b/json-glib/tests/parser.c
@@ -189,7 +189,6 @@ test_empty (void)
 static void
 test_base_value (void)
 {
-  gint i;
   JsonParser *parser;
 
   parser = json_parser_new ();
@@ -198,7 +197,7 @@ test_base_value (void)
   if (g_test_verbose ())
     g_print ("checking json_parser_load_from_data with base-values...\n");
 
-  for (i = 0; i < n_test_base_values; i++)
+  for (guint i = 0; i < n_test_base_values; i++)
     {
       GError *error = NULL;
 
@@ -283,7 +282,6 @@ test_empty_array (void)
 static void
 test_simple_array (void)
 {
-  gint i;
   JsonParser *parser;
 
   parser = json_parser_new ();
@@ -292,7 +290,7 @@ test_simple_array (void)
   if (g_test_verbose ())
     g_print ("checking json_parser_load_from_data with simple arrays...\n");
 
-  for (i = 0; i < n_test_simple_arrays; i++)
+  for (guint i = 0; i < n_test_simple_arrays; i++)
     {
       GError *error = NULL;
 
@@ -347,7 +345,6 @@ test_simple_array (void)
 static void
 test_nested_array (void)
 {
-  gint i;
   JsonParser *parser;
 
   parser = json_parser_new ();
@@ -356,7 +353,7 @@ test_nested_array (void)
   if (g_test_verbose ())
     g_print ("checking json_parser_load_from_data with nested arrays...\n");
 
-  for (i = 0; i < n_test_nested_arrays; i++)
+  for (guint i = 0; i < n_test_nested_arrays; i++)
     {
       GError *error = NULL;
 
@@ -442,7 +439,6 @@ test_empty_object (void)
 static void
 test_simple_object (void)
 {
-  gint i;
   JsonParser *parser;
 
   parser = json_parser_new ();
@@ -451,7 +447,7 @@ test_simple_object (void)
   if (g_test_verbose ())
     g_print ("checking json_parser_load_from_data with simple objects...\n");
 
-  for (i = 0; i < n_test_simple_objects; i++)
+  for (guint i = 0; i < n_test_simple_objects; i++)
     {
       GError *error = NULL;
 
@@ -503,7 +499,6 @@ test_simple_object (void)
 static void
 test_nested_object (void)
 {
-  gint i;
   JsonParser *parser;
 
   parser = json_parser_new ();
@@ -512,7 +507,7 @@ test_nested_object (void)
   if (g_test_verbose ())
     g_print ("checking json_parser_load_from_data with nested objects...\n");
 
-  for (i = 0; i < n_test_nested_objects; i++)
+  for (guint i = 0; i < n_test_nested_objects; i++)
     {
       GError *error = NULL;
 
@@ -553,7 +548,6 @@ test_nested_object (void)
 static void
 test_assignment (void)
 {
-  gint i;
   JsonParser *parser;
 
   parser = json_parser_new ();
@@ -562,7 +556,7 @@ test_assignment (void)
   if (g_test_verbose ())
     g_print ("checking json_parser_load_from_data with assignments...\n");
 
-  for (i = 0; i < n_test_assignments; i++)
+  for (guint i = 0; i < n_test_assignments; i++)
     {
       GError *error = NULL;
 
@@ -595,7 +589,6 @@ test_assignment (void)
 static void
 test_unicode_escape (void)
 {
-  gint i;
   JsonParser *parser;
 
   parser = json_parser_new ();
@@ -604,7 +597,7 @@ test_unicode_escape (void)
   if (g_test_verbose ())
     g_print ("checking json_parser_load_from_data with unicode escape...\n");
 
-  for (i = 0; i < n_test_unicode; i++)
+  for (guint i = 0; i < n_test_unicode; i++)
     {
       GError *error = NULL;
 
diff --git a/json-glib/tests/path.c b/json-glib/tests/path.c
index d674da3..2781ead 100644
--- a/json-glib/tests/path.c
+++ b/json-glib/tests/path.c
@@ -212,7 +212,7 @@ path_expressions_invalid (gconstpointer data)
 
 
   g_assert_false (json_path_compile (path, expr, &error));
-  g_assert_error (error, JSON_PATH_ERROR, code);
+  g_assert_error (error, JSON_PATH_ERROR, (int) code);
 
   g_object_unref (path);
   g_clear_error (&error);
@@ -268,7 +268,7 @@ int
 main (int   argc,
       char *argv[])
 {
-  int i, j;
+  guint i, j;
 
   g_test_init (&argc, &argv, NULL);
   g_test_bug_base ("http://bugzilla.gnome.org/show_bug.cgi?id=");