Add json.count() function

Author: mertyildiran

README.md

@@ -95,3 +95,15 @@ kaos> dict b = {'a': 'foo', 'b': 'bar', 'c': 'baz'}
 kaos> json.replace(b, 'bar', 'gar')
 {'a': 'foo', 'b': 'gar', 'c': 'baz'}
 ```
+
+## Information functions
+
+### num json.count(dict d)
+
+Counts all the keys in given dictionary `d`.
+
+```chaos
+kaos> dict a = {'a': 1, 'b': 2, 'c': 3}
+kaos> json.count(a)
+3
+```

json.c

@@ -299,6 +299,24 @@ int KAOS_EXPORT Kaos_replace()
     return 0;
 }
 
+// Information functions
+
+// num json.count(dict d)
+
+char *count_params_name[] = {
+    "d"
+};
+unsigned count_params_type[] = {
+    K_DICT
+};
+unsigned short count_params_length = (unsigned short) sizeof(count_params_type) / sizeof(unsigned);
+int KAOS_EXPORT Kaos_count()
+{
+    unsigned long dict_length = kaos.getDictLength(count_params_name[0]);
+    kaos.returnVariableInt((long long) dict_length);
+    return 0;
+}
+
 int KAOS_EXPORT KaosRegister(struct Kaos _kaos)
 {
     kaos = _kaos;
@@ -316,5 +334,8 @@ int KAOS_EXPORT KaosRegister(struct Kaos _kaos)
     kaos.defineFunction("search", K_STRING, search_params_name, search_params_type, search_params_length);
     kaos.defineFunction("replace", K_DICT, replace_params_name, replace_params_type, replace_params_length);
 
+    // Information functions
+    kaos.defineFunction("count", K_NUMBER, count_params_name, count_params_type, count_params_length);
+
     return 0;
 }

test.kaos

@@ -19,3 +19,5 @@ print json.search(c, 'jazz')
 
 print json.replace(a, 2, 9)
 print json.replace(c, 'bar', 'gar')
+
+print json.count(a)

test.out

@@ -8,3 +8,4 @@ c
 
 {'a': 1, 'b': 9, 'c': 3}
 {'a': 'foo', 'b': 'gar', 'c': 'baz'}
+3