Move old FastWriter stuff out of new Builder

Author: cdunn2001

doc/jsoncpp.dox

@@ -94,6 +94,9 @@ writer->write( root );
 // If you like the defaults, you can insert directly into a stream.
 std::cout << root;
 
+// If desired, remember to add a linefeed and flush.
+std::cout << std::endl;
+
 // Of course, you can write to `std::ostringstream` if you prefer. Or
 // use `writeString()` for convenience.
 std::string document = Json::writeString( root, builder );

include/json/writer.h

@@ -36,7 +36,7 @@ class StreamWriterBuilder;
   std::shared_ptr<StreamWriter> writer(
     builder.newStreamWriter(&std::cout));
   writer->write(value);
-  std::cout.flush();
+  std::cout << std::endl;  // add lf and flush
 \endcode
 */
 class JSON_API StreamWriter {
@@ -77,24 +77,6 @@ class JSON_API StreamWriter {
         Default: "\t"
     */
     Builder& withIndentation(std::string indentation);
-    /** \brief Drop the "null" string from the writer's output for nullValues.
-    * Strictly speaking, this is not valid JSON. But when the output is being
-    * fed to a browser's Javascript, it makes for smaller output and the
-    * browser can handle the output just fine.
-    */
-    Builder& withDropNullPlaceholders(bool v);
-    /** \brief Do not add \n at end of document.
-     * Normally, we add an extra newline, just because.
-     */
-    Builder& withOmitEndingLineFeed(bool v);
-    /** \brief Add a space after ':'.
-     * If indentation is non-empty, we surround colon with whitespace,
-     * e.g. " : "
-     * This will add back the trailing space when there is no indentation.
-     * This seems dubious when the entire document is on a single line,
-     * but we leave this here to repduce the behavior of the old `FastWriter`.
-     */
-    Builder& withEnableYAMLCompatibility(bool v);
 
     /// Do not take ownership of sout, but maintain a reference.
     StreamWriter* newStreamWriter(std::ostream* sout) const;

src/lib_json/json_writer.cpp

@@ -963,25 +963,16 @@ class StreamWriterBuilder {
   typedef StreamWriter::CommentStyle CommentStyle;
   CommentStyle cs_;
   std::string indentation_;
-  bool dropNullPlaceholders_;
-  bool omitEndingLineFeed_;
-  bool enableYAMLCompatibility_;
 public:
   StreamWriterBuilder();
   virtual ~StreamWriterBuilder();
   virtual void setCommentStyle(CommentStyle cs);
   virtual void setIndentation(std::string indentation);
-  virtual void setDropNullPlaceholders(bool v);
-  virtual void setOmitEndingLineFeed(bool v);
-  virtual void setEnableYAMLCompatibility(bool v);
   virtual StreamWriter* newStreamWriter(std::ostream* sout) const;
 };
 StreamWriterBuilder::StreamWriterBuilder()
   : cs_(CommentStyle::All)
   , indentation_("\t")
-  , dropNullPlaceholders_(false)
-  , omitEndingLineFeed_(false)
-  , enableYAMLCompatibility_(false)
 {
 }
 StreamWriterBuilder::~StreamWriterBuilder()
@@ -996,36 +987,14 @@ void StreamWriterBuilder::setIndentation(std::string v)
   indentation_ = v;
   if (indentation_.empty()) cs_ = CommentStyle::None;
 }
-void StreamWriterBuilder::setDropNullPlaceholders(bool v)
-{
-  dropNullPlaceholders_ = v;
-}
-void StreamWriterBuilder::setOmitEndingLineFeed(bool v)
-{
-  omitEndingLineFeed_ = v;
-}
-void StreamWriterBuilder::setEnableYAMLCompatibility(bool v)
-{
-  enableYAMLCompatibility_ = v;
-}
 StreamWriter* StreamWriterBuilder::newStreamWriter(std::ostream* stream) const
 {
   std::string colonSymbol = " : ";
   if (indentation_.empty()) {
-    if (enableYAMLCompatibility_) {
-      colonSymbol = ": ";
-    } else {
-      colonSymbol = ":";
-    }
+    colonSymbol = ":";
   }
   std::string nullSymbol = "null";
-  if (dropNullPlaceholders_) {
-    nullSymbol = "";
-  }
-  std::string endingLineFeedSymbol = "\n";
-  if (omitEndingLineFeed_) {
-    endingLineFeedSymbol = "";
-  }
+  std::string endingLineFeedSymbol = "";
   return new BuiltStyledStreamWriter(stream,
       indentation_, cs_,
       colonSymbol, nullSymbol, endingLineFeedSymbol);
@@ -1068,21 +1037,6 @@ StreamWriter::Builder& StreamWriter::Builder::withIndentation(std::string v)
   own_->setIndentation(v);
   return *this;
 }
-StreamWriter::Builder& StreamWriter::Builder::withDropNullPlaceholders(bool v)
-{
-  own_->setDropNullPlaceholders(v);
-  return *this;
-}
-StreamWriter::Builder& StreamWriter::Builder::withOmitEndingLineFeed(bool v)
-{
-  own_->setOmitEndingLineFeed(v);
-  return *this;
-}
-StreamWriter::Builder& StreamWriter::Builder::withEnableYAMLCompatibility(bool v)
-{
-  own_->setEnableYAMLCompatibility(v);
-  return *this;
-}
 StreamWriter* StreamWriter::Builder::newStreamWriter(
     std::ostream* sout) const
 {