From df337354cf7187cea73f4310b76fef938cdc8982 Mon Sep 17 00:00:00 2001
From: Dan Goodliffe <dan@randomdan.homeip.net>
Date: Tue, 1 May 2018 19:11:08 +0100
Subject: Tidy parser handlers into lambdas

---
 libjsonpp/json.ll           |  4 +++-
 libjsonpp/jsonFlexLexer.cpp | 33 ++++++---------------------------
 libjsonpp/jsonFlexLexer.h   |  8 ++------
 3 files changed, 11 insertions(+), 34 deletions(-)

diff --git a/libjsonpp/json.ll b/libjsonpp/json.ll
index 860b98c..6cf6302 100644
--- a/libjsonpp/json.ll
+++ b/libjsonpp/json.ll
@@ -157,6 +157,8 @@ json::jsonFlexLexer::jsonFlexLexer(std::istream & in, const std::string & enc) :
 	encoding(enc)
 {
 	yy_push_state(VALUE);
-	acceptValues.push(boost::bind(&jsonFlexLexer::RootValue, this, _1));
+  acceptValues.push([this](const auto & value) {
+		return values.emplace(std::make_shared<Value>(value)).get();
+  });
 }
 
diff --git a/libjsonpp/jsonFlexLexer.cpp b/libjsonpp/jsonFlexLexer.cpp
index ec924c4..323e3ed 100644
--- a/libjsonpp/jsonFlexLexer.cpp
+++ b/libjsonpp/jsonFlexLexer.cpp
@@ -1,6 +1,5 @@
 #include <FlexLexer.h>
 #include "jsonFlexLexer.h"
-#include <boost/bind.hpp>
 #include <glibmm/convert.h>
 
 namespace json {
@@ -10,30 +9,6 @@ namespace json {
 		return values.top();
 	}
 
-	Value *
-	jsonFlexLexer::RootValue(const Value & value)
-	{
-		auto v = ValuePtr(new Value(value));
-		values.push(v);
-		return v.get();
-	}
-
-	Value *
-	jsonFlexLexer::ArrayAppend(Array * array, const Value & value)
-	{
-		auto v = ValuePtr(new Value(value));
-		array->push_back(v);
-		return v.get();
-	}
-
-	Value *
-	jsonFlexLexer::ObjectMember(Object * object, const Value & value)
-	{
-		auto v = ValuePtr(new Value(value));
-		(*object)[name] = v;
-		return v.get();
-	}
-
 	std::string
 	jsonFlexLexer::encodeBuf() const
 	{
@@ -47,14 +22,18 @@ namespace json {
 	jsonFlexLexer::BeginObject()
 	{
 		auto object = boost::get<Object>(acceptValues.top()(Object()));
-		acceptValues.push(boost::bind(&jsonFlexLexer::ObjectMember, this, object, _1));
+		acceptValues.push([object,this](const auto & value) {
+			return object->insert_or_assign(name, std::make_shared<Value>(value)).first->second.get();
+		});
 	}
 
 	void
 	jsonFlexLexer::BeginArray()
 	{
 		auto array = boost::get<Array>(acceptValues.top()(Array()));
-		acceptValues.push(boost::bind(&jsonFlexLexer::ArrayAppend, this, array, _1));
+		acceptValues.push([array](const auto & value) {
+			return array->emplace_back(std::make_shared<Value>(value)).get();
+		});
 	}
 
 	void
diff --git a/libjsonpp/jsonFlexLexer.h b/libjsonpp/jsonFlexLexer.h
index e3be204..6ea1336 100644
--- a/libjsonpp/jsonFlexLexer.h
+++ b/libjsonpp/jsonFlexLexer.h
@@ -4,7 +4,7 @@
 #include <string>
 #include "jsonpp.h"
 #include <stack>
-#include <boost/function.hpp>
+#include <functional>
 
 namespace json {
 	class jsonFlexLexer : public yyFlexLexer {
@@ -26,16 +26,12 @@ namespace json {
 			void PushObject();
 
 		private:
-			Value * RootValue(const Value &);
-			Value * ArrayAppend(Array *, const Value &);
-			Value * ObjectMember(Object *, const Value &);
-
 			std::string encodeBuf() const;
 
 			std::string buf, name, encoding;
 			std::stack<ValuePtr> values;
 
-			typedef boost::function<Value *(const Value &)> AcceptValue;
+			typedef std::function<Value *(const Value &)> AcceptValue;
 			std::stack<AcceptValue> acceptValues;
 	};
 }
-- 
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