JsonHashTable is now a wrapper on to of JsonValue

JsonParser/JsonHashTable.cpp

@@ -3,46 +3,12 @@
 * Benoit Blanchon 2014 - MIT License
 */
 
-#include <string.h> // for strcmp()
 #include "JsonHashTable.h"
 #include "JsonArray.h"
 #include "JsonValue.h"
 
 using namespace ArduinoJson::Parser;
 
-/*
-* Returns the token for the value associated with the specified key
-*/
-JsonValue JsonHashTable::operator [](const char* desiredKey)
-{	
-	// sanity check
-    if (!success() || desiredKey == 0)
-        return JsonValue();
-
-	// skip first token, it's the whole object
-	jsmntok_t* currentToken = tokens + 1;
-
-	// scan each keys
-	for (int i = 0; i < tokens[0].size / 2 ; i++)
-	{
-		// get key token string
-		char* key = JsonValue(json, currentToken);
-
-		// compare with desired name
-		if (strcmp(desiredKey, key) == 0)
-		{
-			// return the value token that follows the key token
-			return JsonValue(json, currentToken + 1);
-		}
-
-		// move forward: key + value + nested tokens
-		currentToken += 2 + getNestedTokenCount(currentToken + 1);
-	}
-
-	// nothing found, return NULL
-    return JsonValue();
-}
-
 DEPRECATED JsonArray JsonHashTable::getArray(const char* key)
 {
     return (JsonArray) (*this)[key];

JsonParser/JsonHashTable.h

@@ -14,9 +14,8 @@ namespace ArduinoJson
     {
         class JsonArray;
 
-        class JsonHashTable : public JsonObjectBase
+        class JsonHashTable
         {
-            friend class JsonParserBase;
             friend class JsonValue;
 
         public:
@@ -25,50 +24,55 @@ namespace ArduinoJson
 
             bool success()
             {
-                return JsonObjectBase::success() && tokens->type == JSMN_OBJECT;
+                return value.success();
             }
             
-            JsonValue operator[](const char* key);
+            JsonValue operator[](const char* key)
+            {
+                return value[key];
+            }
 
             bool containsKey(const char* key)
             {
-                return (*this)[key].success();
+                return value[key];
             }
 
             DEPRECATED JsonArray getArray(const char* key);
 
             DEPRECATED bool getBool(const char* key)
             {
-                return (bool) (*this)[key];
+                return value[key];
             }
 
             DEPRECATED double getDouble(const char* key)
             {
-                return (double) (*this)[key];
+                return value[key];
             }
 
             DEPRECATED JsonHashTable getHashTable(const char* key)
             {
-                return (JsonHashTable) (*this)[key];
+                return value[key];
             }
 
             DEPRECATED long getLong(const char* key)
             {
-                return (long) (*this)[key];
+                return value[key];
             }
 
             DEPRECATED char* getString(const char* key)
             {
-                return (char*) (*this)[key];
+                return value[key];
             }
 
         private:
 
-            JsonHashTable(char* json, jsmntok_t* tokens)
+            JsonHashTable(JsonValue& value)
-                : JsonObjectBase(json, tokens)
+                : value(value)
             {
 
             }
+
+            JsonValue value;
         };
     }
 }

JsonParser/JsonObjectBase.h

@@ -21,6 +21,8 @@ namespace ArduinoJson
     {
         class JsonObjectBase
         {
+            friend class JsonHashTable;
+
         public:
 
             JsonObjectBase()

JsonParser/JsonValue.cpp

@@ -4,6 +4,7 @@
  */
 
 #include <stdlib.h> // for strtol, strtod
+#include <string.h> // for strcmp()
 #include "JsonArray.h"
 #include "JsonHashTable.h"
 #include "JsonValue.h"
@@ -54,10 +55,47 @@ JsonValue::operator char*()
 
 JsonValue::operator JsonArray()
 {
-    return JsonArray(json, tokens);
+    return tokens->type != JSMN_ARRAY
+        ? JsonArray(*this)
+        : JsonArray();
 }
 
 JsonValue::operator JsonHashTable()
 {
-    return JsonHashTable(json, tokens);
+    return tokens->type != JSMN_OBJECT
+        ? JsonHashTable(*this)
+        : JsonHashTable();
+}
+
+/*
+* Returns the token for the value associated with the specified key
+*/
+JsonValue JsonValue::operator [](const char* desiredKey)
+{
+    // sanity check
+    if (!json || !desiredKey || tokens->type != JSMN_OBJECT)
+        return JsonValue();
+
+    // skip first token, it's the whole object
+    jsmntok_t* currentToken = tokens + 1;
+
+    // scan each keys
+    for (int i = 0; i < tokens[0].size / 2; i++)
+    {
+        // get key token string
+        char* key = JsonValue(json, currentToken);
+
+        // compare with desired name
+        if (strcmp(desiredKey, key) == 0)
+        {
+            // return the value token that follows the key token
+            return JsonValue(json, currentToken + 1);
+        }
+
+        // move forward: key + value + nested tokens
+        currentToken += 2 + getNestedTokenCount(currentToken + 1);
+    }
+
+    // nothing found, return NULL
+    return JsonValue();
 }

JsonParser/JsonValue.h

@@ -32,6 +32,8 @@ namespace ArduinoJson
             operator char*();
             operator JsonArray();
             operator JsonHashTable();
+
+            JsonValue operator[](const char* key);
         };
     }
 }