Add print_json function to traverse json tree and print all elements

include/json_entities/json_entities.h

@@ -64,4 +64,6 @@ struct json_collection {
   jentity_t *end;
 };
 
+void print_json(const jentity_t *entity, u32 indent);
+
 #endif // !JSON_ENTITIES_H

src/json_entities/json_entities.c

@@ -1 +1,111 @@
 #include "json_entities.h"
+#include "aliases.h"
+#include "dstring.h"
+#include <stdio.h>
+#include <stdlib.h>
+
+void print_json(const jentity_t *entity, u32 indent) {
+  PERSISTENT i32 indentation = 0;
+
+  dstr_t *key = NULL;
+  const jval_t *value = NULL;
+
+  if (entity->type == JENTITY_SINGLE) {
+    value = &(entity->value);
+  } else {
+    key = entity->pair.key;
+    value = &(entity->pair.value);
+  }
+
+  if (key) {
+    printf("%*s\"%s\": ", indentation * indent, "", dstr_to_cstr(key));
+  }
+
+  switch (value->type) {
+  case JVAL_COLLECTION: {
+    const char *open = "";
+    const char *close = "";
+
+    if (value->collection->type == JCOLL_OBJECT) {
+      open = "{";
+      close = "}";
+    } else {
+      open = "[";
+      close = "]";
+    }
+
+    if (key) {
+      printf("%s\n", open);
+    } else {
+      printf("%*s%s\n", indentation * indent, "", open);
+    }
+
+    ++indentation;
+
+    if (value->collection->begin) {
+      print_json(value->collection->begin, indent);
+    }
+
+    --indentation;
+
+    printf("\n%*s%s", indentation * indent, "", close);
+
+    break;
+  }
+  case JVAL_STRING:
+    if (key) {
+      printf("\"%s\"", dstr_to_cstr(value->string));
+    } else {
+      printf("%*s\"%s\"", indentation * indent, "",
+             dstr_to_cstr(value->string));
+    }
+
+    break;
+  case JVAL_INTEGER:
+    if (key) {
+      printf("%llu", (unsigned long long)value->num_int);
+    } else {
+      printf("%*s%llu", indentation * indent, "",
+             (unsigned long long)value->num_int);
+    }
+
+    break;
+  case JVAL_DOUBLE:
+    if (key) {
+      printf("%f", value->num_dbl);
+    } else {
+      printf("%*s%f", indentation * indent, "", value->num_dbl);
+    }
+
+    break;
+  case JVAL_BOOLEAN:
+    if (key) {
+      printf("%s", value->boolean ? "true" : "false");
+    } else {
+      printf("%*s%s", indentation * indent, "",
+             value->boolean ? "true" : "false");
+    }
+
+    break;
+  case JVAL_NULL:
+    if (key) {
+      printf("%s", "null");
+    } else {
+      printf("%*s%s", indentation * indent, "", "null");
+    }
+
+    break;
+  case JVAL_EMPTY:
+    break;
+  }
+
+  if (entity->next) {
+    printf(",\n");
+    print_json(entity->next, indent);
+  }
+
+  // Add newline after printing the entire json tree
+  if (indentation == 0 && entity->parent == NULL && entity->next == NULL) {
+    printf("\n");
+  }
+}