full lambda support

include/mstch/mstch.hpp

@@ -40,17 +40,25 @@ using renderer = std::function<std::string(const std::string&)>;
 
 class lambda {
  public:
-  lambda(std::function<std::string(const std::string&,renderer)> fun):
+  lambda(std::function<std::string()> fun):
+      fun([fun](const std::string&, renderer){return fun();})
+  {
+  }
+
+  lambda(std::function<std::string(const std::string&, renderer)> fun):
       fun(fun)
   {
   }
 
-  std::string operator()(const std::string& text, renderer renderer) const {
+  std::string operator()(
+      const std::string& text = "",
+      renderer renderer = renderer()) const
+  {
     return fun(text, renderer);
   }
 
  private:
-  std::function<std::string(const std::string&,renderer)> fun;
+  std::function<std::string(const std::string&, renderer)> fun;
 };
 
 using node = boost::make_recursive_variant<

src/CMakeLists.txt

@@ -8,6 +8,12 @@ include_directories(
 set(SRC
   state/in_section.cpp
   state/outside_section.cpp
+  state/render_state.hpp
+  visitor/get_token.hpp
+  visitor/has_token.hpp
+  visitor/is_node_empty.hpp
+  visitor/render_node.hpp
+  visitor/render_section.hpp
   mstch.cpp
   render_context.cpp
   template_type.cpp

src/mstch.cpp

@@ -11,8 +11,8 @@ std::string mstch::render(
     const node& root,
     const std::map<std::string,std::string>& partials)
 {
-  std::map<std::string, template_type> partial_templts;
+  std::map<std::string, template_type> partial_templates;
   for (auto& partial: partials)
-    partial_templts.insert({partial.first, {partial.second}});
-  return render_context(root, partial_templts).render(tmplt);
+    partial_templates.insert({partial.first, {partial.second}});
+  return render_context(root, partial_templates).render(tmplt);
 }

src/render_context.cpp

@@ -5,7 +5,6 @@
 #include "visitor/has_token.hpp"
 
 using namespace mstch;
-using namespace mstch::visitor;
 
 const mstch::node render_context::null_node;
 
@@ -13,8 +12,7 @@ render_context::push::push(render_context& context, const mstch::node& node):
     context(context)
 {
   context.nodes.emplace_front(node);
-  context.state.push(std::unique_ptr<state::render_state>(
-      new state::outside_section));
+  context.state.push(std::unique_ptr<render_state>(new outside_section));
 }
 
 render_context::push::~push() {
@@ -29,11 +27,9 @@ std::string render_context::push::render(const template_type& templt) {
 render_context::render_context(
     const mstch::node& node,
     const std::map<std::string, template_type>& partials):
-    partials{partials},
-    nodes{node}
+    partials{partials}, nodes{node}
 {
-  state.push(std::unique_ptr<state::render_state>(
-      new state::outside_section));
+  state.push(std::unique_ptr<render_state>(new outside_section));
 }
 
 const mstch::node& render_context::find_node(
@@ -41,8 +37,7 @@ const mstch::node& render_context::find_node(
     const std::deque<node>& current_nodes)
 {
   if (token != "." && token.find('.') != std::string::npos)
-    return find_node(
-        token.substr(token.rfind('.') + 1),
+    return find_node(token.substr(token.rfind('.') + 1),
         {find_node(token.substr(0, token.rfind('.')), current_nodes)});
   else
     for (auto& node: current_nodes)

src/render_context.hpp

@@ -30,7 +30,7 @@ class render_context {
   std::string render_partial(const std::string& partial_name);
   template<class T, class... Args>
   void set_state(Args&& ... args) {
-    state.top() = std::unique_ptr<state::render_state>(
+    state.top() = std::unique_ptr<render_state>(
         new T(std::forward<Args>(args)...));
   }
 
@@ -41,7 +41,7 @@ class render_context {
       const std::deque<node>& current_nodes);
   const std::map<std::string, template_type>& partials;
   std::deque<mstch::node> nodes;
-  std::stack<std::unique_ptr<state::render_state>> state;
+  std::stack<std::unique_ptr<render_state>> state;
 };
 
 }

src/state/in_section.cpp

@@ -5,14 +5,13 @@
 #include "utils.hpp"
 
 using namespace mstch;
-using namespace mstch::visitor;
 
-state::in_section::in_section(type type, const std::string& section_name):
+in_section::in_section(type type, const std::string& section_name):
     m_type(type), section_name(section_name), skipped_openings(0)
 {
 }
 
-std::string state::in_section::render(render_context& ctx, const token& token) {
+std::string in_section::render(render_context& ctx, const token& token) {
   if (token.token_type() == token::type::section_close)
     if (token.name() == section_name && skipped_openings == 0) {
       auto& node = ctx.get_node(section_name);

src/state/in_section.hpp

@@ -7,7 +7,6 @@
 #include "template_type.hpp"
 
 namespace mstch {
-namespace state {
 
 class in_section: public render_state {
  public:
@@ -25,4 +24,3 @@ class in_section: public render_state {
 };
 
 }
-}

src/state/outside_section.cpp

@@ -6,9 +6,8 @@
 #include "utils.hpp"
 
 using namespace mstch;
-using namespace mstch::visitor;
 
-std::string state::outside_section::render(
+std::string outside_section::render(
     render_context& ctx, const token& token)
 {
   using flag = render_node::flag;

src/state/outside_section.hpp

@@ -3,7 +3,6 @@
 #include "render_state.hpp"
 
 namespace mstch {
-namespace state {
 
 class outside_section: public render_state {
  public:
@@ -11,4 +10,3 @@ class outside_section: public render_state {
 };
 
 }
-}

src/state/render_state.hpp

@@ -8,12 +8,9 @@ namespace mstch {
 
 class render_context;
 
-namespace state {
-
 class render_state {
  public:
   virtual std::string render(render_context& context, const token& token) = 0;
 };
 
 }
-}

src/utils.hpp

@@ -13,7 +13,7 @@ citer first_not_ws(criter begin, criter end);
 std::string html_escape(std::string str);
 
 template<class... Args>
-auto visit(Args&& ... args) -> decltype(boost::apply_visitor(
+auto visit(Args&&... args) -> decltype(boost::apply_visitor(
     std::forward<Args>(args)...))
 {
   return boost::apply_visitor(std::forward<Args>(args)...);

src/visitor/get_token.hpp

@@ -4,9 +4,9 @@
 #include <boost/blank.hpp>
 
 #include "mstch/mstch.hpp"
+#include "has_token.hpp"
 
 namespace mstch {
-namespace visitor {
 
 class get_token: public boost::static_visitor<const mstch::node&> {
  public:
@@ -38,4 +38,3 @@ inline const mstch::node& get_token::operator()<std::shared_ptr<object>>(
 }
 
 }
-}

src/visitor/has_token.hpp

@@ -6,7 +6,6 @@
 #include "mstch/mstch.hpp"
 
 namespace mstch {
-namespace visitor {
 
 class has_token: public boost::static_visitor<bool> {
  public:
@@ -17,7 +16,8 @@ class has_token: public boost::static_visitor<bool> {
   inline bool operator()(const T& t) const {
     return token == ".";
   }
-private:
+
+ private:
   const std::string& token;
 };
 
@@ -34,4 +34,3 @@ inline bool has_token::operator()<std::shared_ptr<object>>(
 }
 
 }
-}

src/visitor/is_node_empty.hpp

@@ -6,7 +6,6 @@
 #include "mstch/mstch.hpp"
 
 namespace mstch {
-namespace visitor {
 
 class is_node_empty: public boost::static_visitor<bool> {
  public:
@@ -24,20 +23,20 @@ inline bool is_node_empty::operator()<boost::blank>(
 }
 
 template<>
-inline bool is_node_empty::operator()<int>(const int& val) const {
-  return val == 0;
+inline bool is_node_empty::operator()<int>(const int& value) const {
+  return value == 0;
 }
 
 template<>
-inline bool is_node_empty::operator()<bool>(const bool& val) const {
-  return !val;
+inline bool is_node_empty::operator()<bool>(const bool& value) const {
+  return !value;
 }
 
 template<>
 inline bool is_node_empty::operator()<std::string>(
-    const std::string& val) const
+    const std::string& value) const
 {
-  return val == "";
+  return value == "";
 }
 
 template<>
@@ -46,4 +45,3 @@ inline bool is_node_empty::operator()<array>(const array& array) const {
 }
 
 }
-}

src/visitor/render_node.hpp

@@ -7,7 +7,6 @@
 #include "utils.hpp"
 
 namespace mstch {
-namespace visitor {
 
 class render_node: public boost::static_visitor<std::string> {
  public:
@@ -28,21 +27,25 @@ class render_node: public boost::static_visitor<std::string> {
 };
 
 template<>
-inline std::string render_node::operator()<int>(const int& val) const {
-  return std::to_string(val);
+inline std::string render_node::operator()<int>(const int& value) const {
+  return std::to_string(value);
 }
 
-template<> inline
-std::string render_node::operator()<bool>(const bool& val) const {
-  return val?"true":"false";
+template<>
+inline std::string render_node::operator()<bool>(const bool& value) const {
+  return value?"true":"false";
+}
+
+template<>
+inline std::string render_node::operator()<lambda>(const lambda& value) const {
+  return (m_flag == flag::escape_html)?html_escape(value()):value();
 }
 
 template<>
 inline std::string render_node::operator()<std::string>(
-    const std::string& val) const
+    const std::string& value) const
 {
-    return (m_flag == flag::escape_html)?html_escape(val):val;
+    return (m_flag == flag::escape_html)?html_escape(value):value;
 }
 
 }
-}

src/visitor/render_section.hpp

@@ -8,7 +8,6 @@
 #include "utils.hpp"
 
 namespace mstch {
-namespace visitor {
 
 class render_section: public boost::static_visitor<std::string> {
  public:
@@ -26,7 +25,7 @@ class render_section: public boost::static_visitor<std::string> {
     return render_context::push(ctx, t).render(section);
   }
 
-private:
+ private:
   render_context& ctx;
   const template_type& section;
   flag m_flag;
@@ -34,13 +33,12 @@ private:
 
 template<>
 inline std::string render_section::operator()<lambda>(const lambda& fun) const {
-  return "";
-  /*std::string section_str;
+  std::string section_str;
   for(auto& token: section)
     section_str += token.raw();
-  return lam(section_str, [this](const std::string& str) {
-    return ctx.render(template_type{str});
-  });*/
+  return fun(section_str, [this](const std::string& str) {
+    return render_context::push(ctx).render(template_type{str});
+  });
 }
 
 template<>
@@ -55,4 +53,3 @@ inline std::string render_section::operator()<array>(const array& array) const {
 }
 
 }
-}

test/benchmark_main.cpp

@@ -12,8 +12,8 @@ int main() {
   std::string comment_tmp{
       "<div class=\"comments\"><h3>{{header}}</h3><ul>"
       "{{#comments}}<li class=\"comment\"><h5>{{name}}</h5>"
-      "<p>{{body}}</p></li>{{/comments}}</ul></div>"
-  };
+      "<p>{{body}}</p></li>{{/comments}}</ul></div>"};
+
   auto comment_view = mstch::map{
       {"header", std::string{"My Post Comments"}},
       {"comments", mstch::array{
@@ -21,9 +21,7 @@ int main() {
           mstch::map{{"name", std::string{"Sam"}}, {"body", std::string{"Thanks for this post!"}}},
           mstch::map{{"name", std::string{"Heather"}}, {"body", std::string{"Thanks for this post!"}}},
           mstch::map{{"name", std::string{"Kathy"}}, {"body", std::string{"Thanks for this post!"}}},
-          mstch::map{{"name", std::string{"George"}}, {"body", std::string{"Thanks for this post!"}}}
-      }}
-  };
+          mstch::map{{"name", std::string{"George"}}, {"body", std::string{"Thanks for this post!"}}}}}};
 
   std::vector<unsigned long> times;
   for (int j = 0; j < 10; j++) {

test/data/bug_11_eating_whitespace.hpp

@@ -1,3 +1,3 @@
 const auto bug_11_eating_whitespace_data = mstch::map{
   {"tag", std::string{"yo"}}
-};
+};

test/data/comments.hpp

@@ -1,12 +1,3 @@
-class comments: public mstch::object {
-public:
-  comments() {
-    register_methods(this, {{"title", &comments::title}});
-  }
-
-  mstch::node title() {
-    return std::string{"A Comedy of Errors"};
-  }
-};
-
-const mstch::node comments_data = std::make_shared<comments>();
+const mstch::node comments_data = mstch::map{
+    {"title", mstch::lambda{[](){return std::string{"A Comedy of Errors"};}}}
+};

test/data/complex.hpp

@@ -45,7 +45,8 @@ public:
   {
     register_methods(this, {
       {"header", &complex::header}, {"item", &complex::item},
-      {"list", &complex::list}, {"empty", &complex::empty}});
+      {"list", &complex::list}, {"empty", &complex::empty}
+    });
   }
 
   mstch::node header() {

test/data/escaped.hpp

@@ -1,18 +1,4 @@
-class escaped: public mstch::object {
-public:
-  escaped() {
-    register_methods(this, {
-      {"title", &escaped::title}, {"entities", &escaped::entities}
-    });
-  }
-
-  mstch::node title() {
-    return std::string{"Bear > Shark"};
-  };
-
-  mstch::node entities() {
-    return std::string{"&quot; \"'<>/"};
-  }
-};
-
-const mstch::node escaped_data = std::make_shared<escaped>();
+const mstch::node escaped_data = mstch::map{
+    {"title", mstch::lambda{[](){ return std::string{"Bear > Shark"}; }}},
+    {"entities", mstch::lambda{[](){ return std::string{"&quot; \"'<>/"}; }}}
+};

test/data/falsy_array.hpp

@@ -3,6 +3,6 @@ const auto falsy_array_data = mstch::map{
   	mstch::array{std::string{""}, std::string{"emptyString"}},
   	mstch::array{mstch::array{}, std::string{"emptyArray"}},
   	mstch::array{0, std::string{"zero"}},
-  	mstch::array{mstch::node{}, std::string{"null"}}
-  }}
+  	mstch::array{mstch::node{}, std::string{"null"}}}
+	}
 };

test/data/higher_order_sections.hpp

@@ -0,0 +1,28 @@
+class higher_order_sections: public mstch::object {
+ private:
+  std::string m_helper;
+ public:
+  higher_order_sections(): m_helper{"To tinker?"} {
+    register_methods(this, {
+        {"name", &higher_order_sections::name},
+        {"helper", &higher_order_sections::helper},
+        {"bolder", &higher_order_sections::bolder}
+    });
+  }
+
+  mstch::node name() {
+    return std::string{"Tater"};
+  }
+
+  mstch::node helper() {
+    return m_helper;
+  }
+
+  mstch::node bolder() {
+    return mstch::lambda{[this](const std::string& text, mstch::renderer render) {
+      return text + " => <b>" + render(text) + "</b> " + m_helper;
+    }};
+  }
+};
+
+const mstch::node higher_order_sections_data = std::make_shared<higher_order_sections>();

test/data/lambda/check_falsy.js

@@ -1,7 +0,0 @@
-({
-  number: function(text, render) {
-    return function(text, render) {
-      return +render(text);
-    }
-  }
-})

test/data/lambda/check_falsy.mustache

@@ -1 +0,0 @@
-<p>{{#number}}0{{/number}}</p>

test/data/lambda/check_falsy.txt

@@ -1 +0,0 @@
-<p>0</p>

test/data/lambda/higher_order_sections.js

@@ -1,9 +0,0 @@
-({
-  name: "Tater",
-  helper: "To tinker?",
-  bolder: function () {
-    return function (text, render) {
-      return text + ' => <b>' + render(text) + '</b> ' + this.helper;
-    }
-  }
-})

test/data/nested_higher_order_sections.hpp

@@ -1,21 +1,6 @@
-class nested_higher_order_sections: public mstch::object {
-public:
-  nested_higher_order_sections() {
-    register_methods(this, {
-      {"bold", &nested_higher_order_sections::bold},
-      {"person", &nested_higher_order_sections::person}
-    });
-  }
-
-  mstch::node bold() {
-    return mstch::lambda{[](const std::string& text, mstch::renderer render) {
-      return std::string{"<b>"} + render(text) + std::string{"</b>"};
-    }};
-  };
-
-  mstch::node person() {
-    return mstch::map{{"name", std::string{"Jonas"}}};
-  }
-};
-
-const mstch::node nested_higher_order_sections_data = std::make_shared<nested_higher_order_sections>();
+const mstch::node nested_higher_order_sections_data = mstch::map{
+  {"bold", mstch::lambda{[](const std::string& text, mstch::renderer render) {
+    return std::string{"<b>"} + render(text) + std::string{"</b>"};
+  }}},
+  {"person", mstch::map{{"name", std::string{"Jonas"}}}}
+};

test/data/null_lookup_object.hpp

@@ -1,14 +1,14 @@
 const auto null_lookup_object_data = mstch::map{
-    {"name", std::string{"David"}},
-    {"twitter", std::string{"@dasilvacontin"}},
-    {"fobject", mstch::array{
+	{"name", std::string{"David"}},
+  {"twitter", std::string{"@dasilvacontin"}},
+  {"fobject", mstch::array{
 		mstch::map{
-    		{"name", std::string{"Flor"}},
-    		{"twitter", std::string{"@florrts"}}
-    	},
-    	mstch::map{
-	        {"name", std::string{"Miquel"}},
-	        {"twitter", mstch::node{}}
+  		{"name", std::string{"Flor"}},
+    	{"twitter", std::string{"@florrts"}}
+  	},
+  	mstch::map{
+			{"name", std::string{"Miquel"}},
+	  	{"twitter", mstch::node{}}
 		}
-    }}
+	}}
 };

test/data/partial_template.hpp

@@ -1,18 +1,4 @@
-class partial_template: public mstch::object {
-public:
-  partial_template() {
-    register_methods(this, {
-      {"title", &partial_template::title},
-      {"again", &partial_template::again}});
-  }
-
-  mstch::node title() {
-    return std::string{"Welcome"};
-  }
-
-  mstch::node again() {
-    return std::string{"Goodbye"};
-  }
-};
-
-const auto partial_template_data = std::make_shared<partial_template>();
+const mstch::node partial_template_data = mstch::map{
+    {"title", mstch::lambda{[](){ return std::string{"Welcome"}; }}},
+    {"again", mstch::lambda{[](){ return std::string{"Goodbye"}; }}},
+};

test/data/partial_view.hpp

@@ -9,7 +9,8 @@ public:
       {"name", &partial_view::name},
       {"value", &partial_view::value},
       {"taxed_value", &partial_view::taxed_value},
-      {"in_ca", &partial_view::in_ca},});
+      {"in_ca", &partial_view::in_ca}
+    });
   }
 
   mstch::node greeting() {

test/data/partial_whitespace.hpp

@@ -9,7 +9,8 @@ public:
       {"name", &partial_whitespace::name},
       {"value", &partial_whitespace::value},
       {"taxed_value", &partial_whitespace::taxed_value},
-      {"in_ca", &partial_whitespace::in_ca},});
+      {"in_ca", &partial_whitespace::in_ca}
+    });
   }
 
   mstch::node greeting() {

test/data/section_functions_in_partials.hpp

@@ -1,15 +1,5 @@
-class section_functions_in_partials: public mstch::object {
-public:
-  section_functions_in_partials() {
-    register_methods(this, {{"bold", &section_functions_in_partials::bold}});
-  }
-
-  mstch::node bold() {
-    return std::string{""};
-    /*return [](const std::string& text, mstch::renderer render) {
-        return std::string{"<b>"} + render(text) + std::string{"</b>"};
-    };*/
-  }
-};
-
-const auto section_functions_in_partials_data = std::make_shared<section_functions_in_partials>();
+const mstch::node section_functions_in_partials_data = mstch::map{
+  {"bold", mstch::lambda{[](const std::string& text, mstch::renderer render) {
+    return std::string{"<b>"} + render(text) + std::string{"</b>"};
+  }}}
+};

test/data/simple.hpp

@@ -1,21 +1,19 @@
 class simple: public mstch::object {
 private:
-  std::string m_name;
   int m_value;
-  bool m_in_ca;
 public:
   simple():
-    m_name{"Chris"},
-    m_value{10000},
-    m_in_ca{true}
+    m_value{10000}
   {
     register_methods(this, {
-      {"name", &simple::name}, {"value", &simple::value},
-      {"taxed_value", &simple::taxed_value}, {"in_ca", &simple::in_ca}});
+      {"name", &simple::name},
+      {"value", &simple::value},
+      {"taxed_value", &simple::taxed_value},
+      {"in_ca", &simple::in_ca}});
   }
   
   mstch::node name() {
-    return m_name;
+    return std::string{"Chris"};
   }
 
   mstch::node value() {
@@ -27,8 +25,8 @@ public:
   }
 
   mstch::node in_ca() {
-    return m_in_ca;
+    return true;
   }
 };
 
-const auto simple_data = std::make_shared<simple>();
+const auto simple_data = std::make_shared<simple>();

test/data/unescaped.hpp

@@ -1,12 +1,3 @@
-class unescaped: public mstch::object {
-public:
-  unescaped() {
-    register_methods(this, {{"title", &unescaped::title}});
-  }
-
-  mstch::node title() {
-    return std::string{"Bear > Shark"};
-  }
-};
-
-const auto unescaped_data = std::make_shared<unescaped>();
+const mstch::node unescaped_data = mstch::map{
+    {"title", mstch::lambda{[](){ return std::string{"Bear > Shark"}; }}}
+};

test/test_main.cpp

@@ -35,13 +35,14 @@ MSTCH_TEST(escaped)
 MSTCH_TEST(falsy)
 MSTCH_TEST(falsy_array)
 MSTCH_TEST(grandparent_context)
+MSTCH_TEST(higher_order_sections)
 MSTCH_TEST(implicit_iterator)
 MSTCH_TEST(included_tag)
 MSTCH_TEST(inverted_section)
 MSTCH_TEST(keys_with_questionmarks)
 MSTCH_TEST(multiline_comment)
 MSTCH_TEST(nested_dot)
-//MSTCH_TEST(nested_higher_order_sections)
+MSTCH_TEST(nested_higher_order_sections)
 MSTCH_TEST(nested_iterating)
 MSTCH_TEST(nesting)
 MSTCH_TEST(nesting_same_name)
@@ -59,7 +60,7 @@ MSTCH_PARTIAL_TEST(partial_whitespace)
 MSTCH_TEST(recursion_with_same_names)
 MSTCH_TEST(reuse_of_enumerables)
 MSTCH_TEST(section_as_context)
-//MSTCH_PARTIAL_TEST(section_functions_in_partials)
+MSTCH_PARTIAL_TEST(section_functions_in_partials)
 MSTCH_TEST(simple)
 MSTCH_TEST(string_as_context)
 MSTCH_TEST(two_in_a_row)