ArduinoJson is now a header-only library (issue #199)

include/ArduinoJson/JsonVariant.ipp

@@ -10,37 +10,15 @@
 #include "Configuration.hpp"
 #include "JsonVariant.hpp"
 #include "Internals/Parse.hpp"
+#include "JsonArray.hpp"
+#include "JsonObject.hpp"
 
-#include <string.h>
+#include <string.h>  // for strcmp
+#include <errno.h>   // for errno
+#include <stdlib.h>  // for strtol, strtod
 
 namespace ArduinoJson {
 
-inline JsonVariant::JsonVariant(bool value) {
-  using namespace Internals;
-  _type = JSON_BOOLEAN;
-  _content.asInteger = static_cast<JsonInteger>(value);
-}
-
-inline JsonVariant::JsonVariant(const char *value) {
-  _type = Internals::JSON_STRING;
-  _content.asString = value;
-}
-
-inline JsonVariant::JsonVariant(RawJson value) {
-  _type = Internals::JSON_UNPARSED;
-  _content.asString = value;
-}
-
-inline JsonVariant::JsonVariant(JsonArray &array) {
-  _type = Internals::JSON_ARRAY;
-  _content.asArray = &array;
-}
-
-inline JsonVariant::JsonVariant(JsonObject &object) {
-  _type = Internals::JSON_OBJECT;
-  _content.asObject = &object;
-}
-
 inline Internals::JsonInteger JsonVariant::asInteger() const {
   using namespace Internals;
   switch (_type) {
@@ -80,6 +58,119 @@ inline Internals::JsonUInt JsonVariant::asUnsignedInteger() const {
   }
 }
 
+inline const char *JsonVariant::asString() const {
+  using namespace Internals;
+  if (_type == JSON_UNPARSED && _content.asString &&
+      !strcmp("null", _content.asString))
+    return NULL;
+  if (_type == JSON_STRING || _type == JSON_UNPARSED) return _content.asString;
+  return NULL;
+}
+
+inline Internals::JsonFloat JsonVariant::asFloat() const {
+  using namespace Internals;
+  switch (_type) {
+    case JSON_UNDEFINED:
+      return 0;
+    case JSON_POSITIVE_INTEGER:
+    case JSON_BOOLEAN:
+      return static_cast<JsonFloat>(_content.asInteger);
+    case JSON_NEGATIVE_INTEGER:
+      return -static_cast<JsonFloat>(_content.asInteger);
+    case JSON_STRING:
+    case JSON_UNPARSED:
+      return _content.asString ? parse<JsonFloat>(_content.asString) : 0;
+    default:
+      return _content.asFloat;
+  }
+}
+
+inline String JsonVariant::toString() const {
+  using namespace Internals;
+  String s;
+  if ((_type == JSON_STRING || _type == JSON_UNPARSED) &&
+      _content.asString != NULL)
+    s = _content.asString;
+  else
+    printTo(s);
+  return s;
+}
+
+inline bool JsonVariant::isBoolean() const {
+  using namespace Internals;
+  if (_type == JSON_BOOLEAN) return true;
+
+  if (_type != JSON_UNPARSED || _content.asString == NULL) return false;
+
+  return !strcmp(_content.asString, "true") ||
+         !strcmp(_content.asString, "false");
+}
+
+inline bool JsonVariant::isInteger() const {
+  using namespace Internals;
+  if (_type == JSON_POSITIVE_INTEGER || _type == JSON_NEGATIVE_INTEGER)
+    return true;
+
+  if (_type != JSON_UNPARSED || _content.asString == NULL) return false;
+
+  char *end;
+  errno = 0;
+  strtol(_content.asString, &end, 10);
+
+  return *end == '\0' && errno == 0;
+}
+
+inline bool JsonVariant::isFloat() const {
+  using namespace Internals;
+  if (_type >= JSON_FLOAT_0_DECIMALS) return true;
+
+  if (_type != JSON_UNPARSED || _content.asString == NULL) return false;
+
+  char *end;
+  errno = 0;
+  strtod(_content.asString, &end);
+
+  return *end == '\0' && errno == 0 && !is<long>();
+}
+
+inline void JsonVariant::writeTo(Internals::JsonWriter &writer) const {
+  using namespace Internals;
+  switch (_type) {
+    case JSON_UNDEFINED:
+      return;
+
+    case JSON_ARRAY:
+      _content.asArray->writeTo(writer);
+      return;
+
+    case JSON_OBJECT:
+      _content.asObject->writeTo(writer);
+      return;
+
+    case JSON_STRING:
+      writer.writeString(_content.asString);
+      return;
+
+    case JSON_UNPARSED:
+      writer.writeRaw(_content.asString);
+      return;
+
+    case JSON_NEGATIVE_INTEGER:
+      writer.writeRaw('-');
+    case JSON_POSITIVE_INTEGER:
+      writer.writeInteger(_content.asInteger);
+      return;
+
+    case JSON_BOOLEAN:
+      writer.writeBoolean(_content.asInteger != 0);
+      return;
+
+    default:
+      uint8_t decimals = static_cast<uint8_t>(_type - JSON_FLOAT_0_DECIMALS);
+      writer.writeFloat(_content.asFloat, decimals);
+  }
+}
+
 #if ARDUINOJSON_ENABLE_STD_STREAM
 inline std::ostream &operator<<(std::ostream &os, const JsonVariant &source) {
   return source.printTo(os);