Reduced generator size. Fixed Visual Studio warnings

include/ArduinoJson/Arduino/String.hpp

@@ -15,13 +15,7 @@ class String : public std::string {
  public:
   String(const char *cstr = "") : std::string(cstr) {}
   String(const String &str) : std::string(str) {}
-  explicit String(char c);
-  explicit String(unsigned char);
-  explicit String(int);
-  explicit String(unsigned int);
   explicit String(long);
-  explicit String(unsigned long);
-  explicit String(float, unsigned char decimalPlaces = 2);
   explicit String(double, unsigned char decimalPlaces = 2);
 };
 

include/ArduinoJson/Internals/DynamicStringBuilder.hpp

@@ -23,6 +23,8 @@ class DynamicStringBuilder : public Print {
   }
 
  private:
+  DynamicStringBuilder &operator=(const DynamicStringBuilder &);
+
   String &_str;
 };
 }

include/ArduinoJson/Internals/JsonWriter.hpp

@@ -8,6 +8,7 @@
 
 #include "../Arduino/Print.hpp"
 #include "Encoding.hpp"
+#include "ForceInline.hpp"
 
 namespace ArduinoJson {
 namespace Internals {
@@ -69,7 +70,7 @@ class JsonWriter {
 
  protected:
   void write(char c) { _length += _sink.write(c); }
-  void write(const char *s) { _length += _sink.print(s); }
+  FORCE_INLINE void write(const char *s) { _length += _sink.print(s); }
 
   Print &_sink;
   size_t _length;

include/ArduinoJson/JsonArraySubscript.hpp

@@ -16,13 +16,6 @@ class JsonArraySubscript : public JsonSubscriptBase<JsonArraySubscript> {
 
   using JsonSubscriptBase::operator=;
 
-  FORCE_INLINE JsonArraySubscript& operator=(const JsonArraySubscript& other) {
-    // to prevent Visual Studio warning C4512: assignment operator could not be
-    // generated
-    _array.set(_index, other._array.get(other._index));
-    return *this;
-  }
-
   FORCE_INLINE bool success() const { return _index < _array.size(); }
 
   FORCE_INLINE operator JsonVariant() const { return _array.get(_index); }

include/ArduinoJson/JsonObjectSubscript.hpp

@@ -19,13 +19,6 @@ class JsonObjectSubscript
 
   using JsonSubscriptBase<JsonObjectSubscript<TKey> >::operator=;
 
-  FORCE_INLINE JsonObjectSubscript<TKey>& operator=(
-      const JsonObjectSubscript<TKey>& other) {
-    // to prevent Visual Studio warning C4512: assignment operator could not be
-    // generated
-    return set(other.get());
-  }
-
   FORCE_INLINE bool success() const { return _object.containsKey(_key); }
 
   FORCE_INLINE operator JsonVariant() const { return _object.get(_key); }

include/ArduinoJson/JsonVariant.ipp

@@ -101,7 +101,7 @@ const char *JsonVariant::as<const char *>() const;
 
 template <>
 inline bool JsonVariant::as<bool>() const {
-  return as<long>();
+  return as<long>() != 0;
 }
 
 template <>