Added class JsonValue.

Added subscript operator on JsonArray and JsonHashTable

JsonParser/JsonValue.cpp

@@ -0,0 +1,63 @@
+/*
+ * Arduino JSON library
+ * Benoit Blanchon 2014 - MIT License
+ */
+
+#include <stdlib.h> // for strtol, strtod
+#include "JsonArray.h"
+#include "JsonHashTable.h"
+#include "JsonValue.h"
+
+using namespace ArduinoJson::Parser;
+
+JsonValue::operator bool()
+{
+    if (token == 0 || token->type != JSMN_PRIMITIVE) return 0;
+
+    // "true"
+    if (json[token->start] == 't') return true;
+
+    // "false"
+    if (json[token->start] == 'f') return false;
+
+    // "null"
+    if (json[token->start] == 'n') return false;
+
+    // number
+    return strtol(json + token->start, 0, 0) != 0;
+}
+
+JsonValue::operator double()
+{
+    if (token == 0 || token->type != JSMN_PRIMITIVE) return 0;
+
+    return strtod(json + token->start, 0);
+}
+
+JsonValue::operator long()
+{
+    if (token == 0 || token->type != JSMN_PRIMITIVE) return 0;
+
+    return strtol(json + token->start, 0, 0);
+}
+
+JsonValue::operator char*()
+{
+    if (token == 0 || token->type != JSMN_PRIMITIVE && token->type != JSMN_STRING)
+        return 0;
+
+    // add null terminator to the string
+    json[token->end] = 0;
+
+    return json + token->start;
+}
+
+JsonValue::operator JsonArray()
+{
+    return JsonArray(json, token);
+}
+
+JsonValue::operator JsonHashTable()
+{
+    return JsonHashTable(json, token);
+}