Simplified JsonWriter and PrettyJsonWriter

include/ArduinoJson/Internals/JsonWriter.hpp

@@ -27,23 +27,26 @@ class JsonWriter {
   // number of bytes written.
   size_t bytesWritten() { return _length; }
 
-  void beginArray() { _length += _sink->write('['); }
-  void endArray() { _length += _sink->write(']'); }
-  void writeEmptyArray() { _length += _sink->print("[]"); }
+  void beginArray() { write('['); }
+  void endArray() { write(']'); }
+  void writeEmptyArray() { write("[]"); }
 
-  void beginObject() { _length += _sink->write('{'); }
-  void endObject() { _length += _sink->write('}'); }
-  void writeEmptyObject() { _length += _sink->print("{}"); }
+  void beginObject() { write('{'); }
+  void endObject() { write('}'); }
+  void writeEmptyObject() { write("{}"); }
 
   void writeString(const char *value);
   void writeInteger(long value);
   void writeBoolean(bool value);
   void writeDouble(double value, uint8_t decimals);
 
-  void writeColon() { _length += _sink->write(':'); }
-  void writeComma() { _length += _sink->write(','); }
+  void writeColon() { write(':'); }
+  void writeComma() { write(','); }
 
  protected:
+  void write(char c) { _length += _sink->write(c); }
+  void write(const char *s) { _length += _sink->print(s); }
+
   Print *_sink;
   size_t _length;
 };

include/ArduinoJson/Internals/PrettyJsonWriter.hpp

@@ -18,44 +18,46 @@ class PrettyJsonWriter : public JsonWriter {
       : JsonWriter(sink), _indenter(sink) {}
 
   void beginArray() {
-    _length += _sink->write('[');
+    JsonWriter::beginArray();
     indent();
   }
 
   void endArray() {
     unindent();
-    _length += _sink->write(']');
+    JsonWriter::endArray();
   }
 
-  void writeColon() { _length += _sink->print(": "); }
+  void writeColon() { write(": "); }
 
   void writeComma() {
-    _length += _sink->write(',');
-    _length += _indenter->println();
+    JsonWriter::writeComma();
+    newline();
   }
 
   void beginObject() {
-    _length += _sink->write('{');
+    JsonWriter::beginObject();
     indent();
   }
 
   void endObject() {
     unindent();
-    _length += _sink->write('}');
+    JsonWriter::endObject();
   }
 
  private:
-  IndentedPrint *_indenter;
-
   void indent() {
     _indenter->indent();
-    _length += _indenter->println();
+    newline();
   }
 
   void unindent() {
-    _length += _indenter->println();
+    newline();
     _indenter->unindent();
   }
+
+  void newline() { _length += _indenter->println(); }
+
+  IndentedPrint *_indenter;
 };
 }
 }