Merged JsonArrayIterator and JsonObjectIterator into a one template class

include/ArduinoJson/ForwardDeclarations.hpp

@@ -8,13 +8,16 @@
 
 namespace ArduinoJson {
 class JsonArray;
-class JsonArrayIterator;
-class JsonArrayConstIterator;
 class JsonBuffer;
 class JsonObject;
 class JsonObjectIterator;
 class JsonObjectKeyValue;
 class JsonValue;
+template <typename T>
+class JsonIterator;
+template <typename T>
+class JsonConstIterator;
+
 namespace Internals {
 class IndentedPrint;
 class JsonNode;

include/ArduinoJson/JsonArray.hpp

@@ -7,13 +7,13 @@
 #pragma once
 
 #include "JsonContainer.hpp"
-#include "JsonArrayIterator.hpp"
+#include "JsonIterator.hpp"
 
 namespace ArduinoJson {
 class JsonArray : public JsonContainer {
  public:
-  typedef JsonArrayIterator iterator;
-  typedef JsonArrayConstIterator const_iterator;
+  typedef JsonIterator<JsonValue> iterator;
+  typedef JsonConstIterator<JsonValue> const_iterator;
 
   JsonArray() {}
 

include/ArduinoJson/JsonIterator.hpp

@@ -11,50 +11,52 @@
 
 namespace ArduinoJson {
 
-class JsonArrayIterator {
+template <typename T>
+class JsonIterator {
   friend class JsonArray;
 
  public:
-  explicit JsonArrayIterator(Internals::JsonNode *node) : _value(node) {}
+  explicit JsonIterator(Internals::JsonNode *node) : _value(node) {}
 
-  JsonValue operator*() const { return _value; }
-  JsonValue *operator->() { return &_value; }
+  T operator*() const { return _value; }
+  T *operator->() { return &_value; }
 
-  bool operator==(const JsonArrayIterator &other) const {
+  bool operator==(const JsonIterator &other) const {
     return _value._node == other._value._node;
   }
 
-  bool operator!=(const JsonArrayIterator &other) const {
+  bool operator!=(const JsonIterator &other) const {
     return _value._node != other._value._node;
   }
 
-  JsonArrayIterator &operator++() {
+  JsonIterator &operator++() {
     _value._node = _value._node->next;
     return *this;
   }
 
  private:
-  JsonValue _value;
+  T _value;
 };
 
-class JsonArrayConstIterator {
+template <typename T>
+class JsonConstIterator {
   friend class JsonArray;
 
  public:
-  explicit JsonArrayConstIterator(Internals::JsonNode *node) : _value(node) {}
+  explicit JsonConstIterator(Internals::JsonNode *node) : _value(node) {}
 
   const JsonValue operator*() const { return _value; }
   const JsonValue *operator->() { return &_value; }
 
-  bool operator==(const JsonArrayConstIterator &other) const {
+  bool operator==(const JsonConstIterator &other) const {
     return _value._node == other._value._node;
   }
 
-  bool operator!=(const JsonArrayConstIterator &other) const {
+  bool operator!=(const JsonConstIterator &other) const {
     return _value._node != other._value._node;
   }
 
-  JsonArrayConstIterator &operator++() {
+  JsonConstIterator &operator++() {
     _value._node = _value._node->next;
     return *this;
   }

include/ArduinoJson/JsonObject.hpp

@@ -7,11 +7,15 @@
 #pragma once
 
 #include "JsonContainer.hpp"
-#include "JsonObjectIterator.hpp"
+#include "JsonIterator.hpp"
+#include "JsonObjectKeyValue.hpp"
 
 namespace ArduinoJson {
 class JsonObject : public JsonContainer {
  public:
+  typedef JsonIterator<JsonObjectKeyValue> iterator;
+  typedef JsonConstIterator<JsonObjectKeyValue> const_iterator;
+
   JsonObject() {}
 
   explicit JsonObject(Internals::JsonNode *node) : JsonContainer(node) {}
@@ -24,9 +28,11 @@ class JsonObject : public JsonContainer {
 
   bool success() { return _node && _node->isObject(); }
 
-  JsonObjectIterator begin() { return JsonObjectIterator(firstChild()); }
+  iterator begin() { return iterator(firstChild()); }
+  iterator end() { return iterator(0); }
 
-  JsonObjectIterator end() { return JsonObjectIterator(0); }
+  const_iterator begin() const { return const_iterator(firstChild()); }
+  const_iterator end() const { return const_iterator(0); }
 
  private:
   Internals::JsonNode *getOrCreateNodeAt(const char *key);

include/ArduinoJson/JsonObjectIterator.hpp

@@ -1,39 +0,0 @@
-// Copyright Benoit Blanchon 2014
-// MIT License
-//
-// Arduino JSON library
-// https://github.com/bblanchon/ArduinoJson
-
-#pragma once
-
-#include "ForwardDeclarations.hpp"
-#include "JsonObjectKeyValue.hpp"
-
-namespace ArduinoJson {
-
-class JsonObjectIterator {
-  friend class JsonObject;
-
- public:
-  JsonObjectKeyValue operator*() const { return _keyValue; }
-  JsonObjectKeyValue *operator->() { return &_keyValue; }
-
-  bool operator==(const JsonObjectIterator &other) const {
-      return _keyValue._node == other._keyValue._node;
-  }
-
-  bool operator!=(const JsonObjectIterator &other) const {
-    return _keyValue._node != other._keyValue._node;
-  }
-
-  JsonObjectIterator &operator++() {
-    _keyValue._node = _keyValue._node->next;
-    return *this;
-  }
-
- private:
-  explicit JsonObjectIterator(Internals::JsonNode *node) : _keyValue(node) {}
-
-  JsonObjectKeyValue _keyValue;
-};
-}

include/ArduinoJson/JsonObjectKeyValue.hpp

@@ -12,7 +12,8 @@
 namespace ArduinoJson {
 class JsonObjectKeyValue {
   friend class JsonObject;
-  friend class JsonObjectIterator;
+  template <typename T>
+  friend class JsonIterator;
 
  public:
   const char *key() const { return _node->getAsObjectKey(); }

include/ArduinoJson/JsonValue.hpp

@@ -13,8 +13,10 @@ namespace ArduinoJson {
 
 class JsonValue : public Internals::JsonNodeWrapper {
   friend class JsonArray;
-  friend class JsonArrayIterator;
-  friend class JsonArrayConstIterator;
+  template <typename T>
+  friend class JsonIterator;
+  template <typename T>
+  friend class JsonConstIterator;
   friend class JsonBuffer;
   friend class JsonObject;
   friend class JsonObjectKeyValue;

src/JsonObject.cpp

@@ -22,7 +22,7 @@ JsonValue JsonObject::operator[](char const *key) {
 }
 
 void JsonObject::remove(char const *key) {
-  for (JsonObjectIterator it = begin(); it != end(); ++it) {
+  for (iterator it = begin(); it != end(); ++it) {
     if (!strcmp(it->key(), key)) {
       removeChild(it->_node);
     }
@@ -46,7 +46,7 @@ JsonObject JsonObject::createNestedObject(char const *key) {
 }
 
 JsonNode *JsonObject::getOrCreateNodeAt(const char *key) {
-  for (JsonObjectIterator it = begin(); it != end(); ++it) {
+  for (iterator it = begin(); it != end(); ++it) {
     if (!strcmp(it->key(), key)) return it->value()._node;
   }
 

test/JsonArray_Iterator_Tests.cpp

@@ -17,8 +17,8 @@ TEST(JsonArray_Iterator_Test, SimpleTest) {
   array.add(12);
   array.add(34);
 
-  JsonArrayIterator it = array.begin();
-  JsonArrayIterator end = array.end();
+  JsonArray::iterator it = array.begin();
+  JsonArray::iterator end = array.end();
 
   EXPECT_NE(end, it);
   EXPECT_EQ(12, it->as<int>());

test/JsonObject_Iterator_Tests.cpp

@@ -17,8 +17,8 @@ TEST(JsonObject_Iterator_Test, SimpleTest) {
   object["ab"] = 12;
   object["cd"] = 34;
 
-  JsonObjectIterator it = object.begin();
-  JsonObjectIterator end = object.end();
+  JsonObject::iterator it = object.begin();
+  JsonObject::iterator end = object.end();
 
   EXPECT_NE(end, it);
   EXPECT_STREQ("ab", it->key());

test/JsonValueTests.cpp

@@ -7,6 +7,7 @@
 #include <gtest/gtest.h>
 #include <ArduinoJson/StaticJsonBuffer.hpp>
 #include <ArduinoJson/JsonValue.hpp>
+#include "Printers.hpp"
 
 using namespace ArduinoJson;