clean unused parameter warnings

CMakeLists.txt

@@ -11,7 +11,7 @@ set(CMAKE_BUILD_TYPE Release)
 set(mstch_VERSION 0.2.3)
 
 if(NOT MSVC)
-  set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -std=c++11 -Wall -O3")
+  set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -std=c++11 -Wall -Wextra -O3")
 endif()
 
 add_subdirectory(src)

src/visitor/get_token.hpp

@@ -15,7 +15,7 @@ class get_token: public boost::static_visitor<const mstch::node&> {
   }
 
   template<class T>
-  const mstch::node& operator()(const T& t) const {
+  const mstch::node& operator()(const T&) const {
     return node;
   }
 

src/visitor/has_token.hpp

@@ -12,7 +12,7 @@ class has_token: public boost::static_visitor<bool> {
   }
 
   template<class T>
-  bool operator()(const T& t) const {
+  bool operator()(const T&) const {
     return token == ".";
   }
 

src/visitor/is_node_empty.hpp

@@ -9,11 +9,11 @@ namespace mstch {
 class is_node_empty: public boost::static_visitor<bool> {
  public:
   template<class T>
-  bool operator()(const T& t) const {
+  bool operator()(const T&) const {
     return false;
   }
 
-  bool operator()(const std::nullptr_t& nul) const {
+  bool operator()(const std::nullptr_t&) const {
     return true;
   }
 

src/visitor/render_node.hpp

@@ -18,7 +18,7 @@ class render_node: public boost::static_visitor<std::string> {
   }
 
   template<class T>
-  std::string operator()(const T& t) const {
+  std::string operator()(const T&) const {
     return "";
   }
 

test/specs_lambdas.hpp

@@ -20,7 +20,7 @@ std::map<std::string,mstch::node> specs_lambdas {
     {"Section - Multiple Calls", mstch::lambda{[](const std::string& txt) -> mstch::node {
       return "__" + txt + "__";
     }}},
-    {"Inverted Section", mstch::lambda{[](const std::string& txt) -> mstch::node {
+    {"Inverted Section", mstch::lambda{[](const std::string&) -> mstch::node {
       return false;
     }}}
 };