Update comments and simplify

example/ex11-json01.c

@@ -0,0 +1,60 @@
+#include "m-serial-json.h"
+#include "m-tuple.h"
+#include "m-array.h"
+
+// Let's define a 'person' composed of several fields.
+TUPLE_DEF2(person,
+           (surname, string_t),
+           (age, int),
+           (present, bool)
+           )
+// Register the oplist of this tuple globaly
+#define M_OPL_person_t() TUPLE_OPLIST(person, M_DEFAULT_OPLIST, STRING_OPLIST, M_DEFAULT_OPLIST )
+
+// Let's define an array of person
+ARRAY_DEF(base, person_t)
+// Register the oplist of this array globaly
+#define M_OPL_base_t() ARRAY_OPLIST(base, M_OPL_person_t())
+
+// Let's read an array of person from the given JSON file
+static void read(base_t base, const char filename[])
+{
+  m_serial_read_t  in;
+  m_serial_return_code_t ret;
+
+  // Open the file
+  FILE *f = fopen(filename, "rt");
+  if (!f) {
+    fprintf(stderr, "ERROR: Cannot open file '%s'.\n", filename);
+    exit(2);
+  }
+
+  // Initialize the serializer with the file
+  m_serial_json_read_init(in, f);
+  // Read the array
+  ret = base_in_serial(base, in);
+  if (ret != M_SERIAL_OK_DONE) {
+    fprintf(stderr, "ERROR: Cannot read JSON data from file '%s'.\n", filename);
+    exit(2);
+  }
+  // Let's close & clear all
+  m_serial_json_read_clear(in);
+  fclose(f);
+}
+
+int main(void)
+{
+  // Let's have base as a base_t
+  M_LET(base, base_t) {
+    // Read the JSON file and fill-in base
+    read(base, "ex11-json01.json");
+    // Print the contents of base:
+    printf ("List of presents:\n");
+    for M_EACH(el, base, base_t) {
+      if ((*el)->present) {
+        printf("%s\n", string_get_cstr((*el)->surname));
+      }
+    }
+  }
+  exit(0);    
+}