8 files changed, 185 insertions, 152 deletions

diff --git a/MoonParser.xcodeproj/project.pbxproj b/MoonParser.xcodeproj/project.pbxproj
index fe4dd22..1216f9c 100644
--- a/MoonParser.xcodeproj/project.pbxproj
+++ b/MoonParser.xcodeproj/project.pbxproj
@@ -107,7 +107,7 @@
                 3C0F0F641EF3781E000EADDB /* Project object */ = {
                         isa = PBXProject;
                         attributes = {
-                                LastUpgradeCheck = 0820;
+                                LastUpgradeCheck = 0920;
                                 ORGANIZATIONNAME = "Li Jin";
                                 TargetAttributes = {
                                         3C0F0F6B1EF3781E000EADDB = {
@@ -157,7 +157,9 @@
                                 CLANG_CXX_LIBRARY = "libc++";
                                 CLANG_ENABLE_MODULES = YES;
                                 CLANG_ENABLE_OBJC_ARC = YES;
+                                CLANG_WARN_BLOCK_CAPTURE_AUTORELEASING = YES;
                                 CLANG_WARN_BOOL_CONVERSION = YES;
+                                CLANG_WARN_COMMA = YES;
                                 CLANG_WARN_CONSTANT_CONVERSION = YES;
                                 CLANG_WARN_DIRECT_OBJC_ISA_USAGE = YES_ERROR;
                                 CLANG_WARN_DOCUMENTATION_COMMENTS = YES;
@@ -165,7 +167,11 @@
                                 CLANG_WARN_ENUM_CONVERSION = YES;
                                 CLANG_WARN_INFINITE_RECURSION = YES;
                                 CLANG_WARN_INT_CONVERSION = YES;
+                                CLANG_WARN_NON_LITERAL_NULL_CONVERSION = YES;
+                                CLANG_WARN_OBJC_LITERAL_CONVERSION = YES;
                                 CLANG_WARN_OBJC_ROOT_CLASS = YES_ERROR;
+                                CLANG_WARN_RANGE_LOOP_ANALYSIS = YES;
+                                CLANG_WARN_STRICT_PROTOTYPES = YES;
                                 CLANG_WARN_SUSPICIOUS_MOVE = YES;
                                 CLANG_WARN_UNREACHABLE_CODE = YES;
                                 CLANG_WARN__DUPLICATE_METHOD_MATCH = YES;
@@ -204,7 +210,9 @@
                                 CLANG_CXX_LIBRARY = "libc++";
                                 CLANG_ENABLE_MODULES = YES;
                                 CLANG_ENABLE_OBJC_ARC = YES;
+                                CLANG_WARN_BLOCK_CAPTURE_AUTORELEASING = YES;
                                 CLANG_WARN_BOOL_CONVERSION = YES;
+                                CLANG_WARN_COMMA = YES;
                                 CLANG_WARN_CONSTANT_CONVERSION = YES;
                                 CLANG_WARN_DIRECT_OBJC_ISA_USAGE = YES_ERROR;
                                 CLANG_WARN_DOCUMENTATION_COMMENTS = YES;
@@ -212,7 +220,11 @@
                                 CLANG_WARN_ENUM_CONVERSION = YES;
                                 CLANG_WARN_INFINITE_RECURSION = YES;
                                 CLANG_WARN_INT_CONVERSION = YES;
+                                CLANG_WARN_NON_LITERAL_NULL_CONVERSION = YES;
+                                CLANG_WARN_OBJC_LITERAL_CONVERSION = YES;
                                 CLANG_WARN_OBJC_ROOT_CLASS = YES_ERROR;
+                                CLANG_WARN_RANGE_LOOP_ANALYSIS = YES;
+                                CLANG_WARN_STRICT_PROTOTYPES = YES;
                                 CLANG_WARN_SUSPICIOUS_MOVE = YES;
                                 CLANG_WARN_UNREACHABLE_CODE = YES;
                                 CLANG_WARN__DUPLICATE_METHOD_MATCH = YES;
diff --git a/MoonParser/ast.cpp b/MoonParser/ast.cpp
index 090f5ee..739e02c 100644
--- a/MoonParser/ast.cpp
+++ b/MoonParser/ast.cpp
@@ -11,6 +11,13 @@ static ast_container *_current = 0;
 int ast_type_id = 0;
 
 
+bool ast_node::visit(const std::function<bool (ast_node*)>& begin,
+                const std::function<bool (ast_node*)>& end)
+{
+        return begin(this) || end(this);
+}
+
+
 /** sets the container under construction to be this.
  */
 ast_container::ast_container() {
@@ -41,6 +48,28 @@ void ast_container::construct(ast_stack &st) {
     }
 }
 
+bool ast_container::visit(const std::function<bool (ast_node*)>& begin,
+                const std::function<bool (ast_node*)>& end)
+{
+        bool result = begin(this);
+        if (result) return true;
+        const auto& members = this->members();
+        for (auto member : members) {
+                if (_ast_ptr* ptr = ast_cast<_ast_ptr>(member)) {
+                        if (ptr->get() && ptr->get()->visit(begin, end)) {
+                                return true;
+                        }
+                } else if (_ast_list* list = ast_cast<_ast_list>(member)) {
+                        for (auto obj : list->objects()) {
+                                if (obj->visit(begin, end)) {
+                                        return true;
+                                }
+                        }
+                }
+        }
+        return end(this);
+}
+
 
 //register the AST member to the current container.
 void ast_member::_init() {
diff --git a/MoonParser/ast.hpp b/MoonParser/ast.hpp
index 955cdc0..1d05779 100644
--- a/MoonParser/ast.hpp
+++ b/MoonParser/ast.hpp
@@ -36,12 +36,12 @@ int ast_type()
 class ast_node : public input_range {
 public:
     ///constructor.
-    ast_node() : m_parent(0) {}
+    ast_node() : m_parent(nullptr) {}
     
     /** copy constructor.
         @param n source object.
      */
-    ast_node(const ast_node &n) : m_parent(0) {}
+    ast_node(const ast_node &n) : m_parent(nullptr) {}
 
     ///destructor.
     virtual ~ast_node() {}
@@ -64,9 +64,11 @@ public:
     virtual void construct(ast_stack &st) {}
 
     /** interface for visiting AST tree use.
-        @param user_data vector for storing user data.
      */
-        virtual void visit(void* user_data) {}
+        virtual bool visit(const std::function<bool (ast_node*)>& begin,
+                const std::function<bool (ast_node*)>& end);
+
+        virtual const char* getName() const { return "ast_node"; }
 
         virtual int get_type() { return ast_type<ast_node>(); }
 private:
@@ -96,7 +98,6 @@ bool ast_is(ast_node* node) {
 
 class ast_member;
 
-
 /** type of ast member vector.
  */
 typedef std::vector<ast_member *> ast_member_vector;
@@ -137,8 +138,12 @@ public:
         from a node stack.
         @param st stack.
      */
-    virtual void construct(ast_stack &st);
+    virtual void construct(ast_stack &st) override;
 
+        virtual bool visit(const std::function<bool (ast_node*)>& begin,
+                const std::function<bool (ast_node*)>& end) override;
+
+        virtual const char* getName() const override { return "ast_container"; }
 private:
     ast_member_vector m_members;
 
@@ -177,6 +182,7 @@ public:
      */
     virtual void construct(ast_stack &st) = 0;
 
+        virtual int get_type() { return ast_type<ast_member>(); }
 private:
     //the container this belongs to.
     ast_container *m_container;
@@ -185,6 +191,25 @@ private:
     void _init();
 };
 
+template<class T>
+T* ast_cast(ast_member *member) {
+        return member && ast_type<T>() == member->get_type() ? static_cast<T*>(member) : nullptr;
+}
+
+class _ast_ptr : public ast_member {
+public:
+        _ast_ptr(ast_node *node): m_ptr(node) {}
+
+        ast_node* get() const {
+                return m_ptr;
+        }
+
+        virtual int get_type() override {
+                return ast_type<_ast_ptr>();
+        }
+protected:
+        ast_node *m_ptr;
+};
 
 /** pointer to an AST object.
     It assumes ownership of the object.
@@ -192,12 +217,12 @@ private:
     @tparam T type of object to control.
     @tparam OPT if true, the object becomes optional.
  */
-template <class T, bool OPT = false> class ast_ptr : public ast_member {
+template <class T, bool OPT = false> class ast_ptr : public _ast_ptr {
 public:
     /** the default constructor.
         @param obj object.
      */
-    ast_ptr(T *obj = 0) : m_ptr(obj) {
+    ast_ptr(T *obj = nullptr) : _ast_ptr(obj) {
         _set_parent();
     }
 
@@ -206,7 +231,7 @@ public:
         @param src source object.
      */
     ast_ptr(const ast_ptr<T, OPT> &src) :
-        m_ptr(src.m_ptr ? new T(*src.m_ptr) : 0)
+        _ast_ptr(src.m_ptr ? new T(*src.m_ptr) : nullptr)
     {
         _set_parent();
     }
@@ -224,7 +249,7 @@ public:
      */
     ast_ptr<T, OPT> &operator = (const T *obj) {
         delete m_ptr;
-        m_ptr = obj ? new T(*obj) : 0;
+        m_ptr = obj ? new T(*obj) : nullptr;
         _set_parent();
         return *this;
     }
@@ -236,7 +261,7 @@ public:
      */
     ast_ptr<T, OPT> &operator = (const ast_ptr<T, OPT> &src) {
         delete m_ptr;
-        m_ptr = src.m_ptr ? new T(*src.m_ptr) : 0;
+        m_ptr = src.m_ptr ? new T(*src.m_ptr) : nullptr;
         _set_parent();
         return *this;
     }
@@ -245,14 +270,14 @@ public:
         @return the underlying ptr value.
      */
     T *get() const {
-        return m_ptr;
+        return static_cast<T*>(m_ptr);
     }
 
     /** auto conversion to the underlying object ptr.
         @return the underlying ptr value.
      */
     operator T *() const {
-        return m_ptr;
+        return static_cast<T*>(m_ptr);
     }
 
     /** member access.
@@ -299,25 +324,21 @@ public:
         m_ptr = obj;
         _set_parent();
     }
-
 private:
-    //ptr
-    T *m_ptr;
-    
     //set parent of object
     void _set_parent() {
         if (m_ptr) m_ptr->m_parent = container();
     }
 };
 
-template <class ...Args> class ast_choice : public ast_member {
+template <class ...Args> class ast_choice : public _ast_ptr {
 public:
-    ast_choice(ast_node *obj = 0) : m_ptr(obj) {
+    ast_choice(ast_node *obj = nullptr) : _ast_ptr(obj) {
         _set_parent();
     }
 
     ast_choice(const ast_choice<Args...> &src) :
-        m_ptr(src.m_ptr ? new ast_node(*src.m_ptr) : 0)
+        _ast_ptr(src.m_ptr ? new ast_node(*src.m_ptr) : nullptr)
     {
         _set_parent();
     }
@@ -328,22 +349,18 @@ public:
 
     ast_choice<Args...> &operator = (const ast_node *obj) {
         delete m_ptr;
-        m_ptr = obj ? new ast_node(*obj) : 0;
+        m_ptr = obj ? new ast_node(*obj) : nullptr;
         _set_parent();
         return *this;
     }
 
     ast_choice<Args...> &operator = (const ast_choice<Args...> &src) {
         delete m_ptr;
-        m_ptr = src.m_ptr ? new ast_node(*src.m_ptr) : 0;
+        m_ptr = src.m_ptr ? new ast_node(*src.m_ptr) : nullptr;
         _set_parent();
         return *this;
     }
 
-    ast_node *get() const {
-        return m_ptr;
-    }
-
     operator ast_node *() const {
         return m_ptr;
     }
@@ -372,26 +389,33 @@ public:
         m_ptr = obj;
         _set_parent();
     }
-
 private:
-    //ptr
-    ast_node *m_ptr;
-
     void _set_parent() {
         if (m_ptr) m_ptr->m_parent = container();
     }
 };
 
+class _ast_list : public ast_member {
+public:
+    ///list type.
+    typedef std::list<ast_node *> container;
+
+        virtual int get_type() override { return ast_type<_ast_list>(); }
+
+         const container &objects() const {
+        return m_objects;
+    }
+protected:
+        container m_objects;
+};
+
 /** A list of objects.
     It pops objects of the given type from the ast stack, until no more objects can be popped.
     It assumes ownership of objects.
     @tparam T type of object to control.
  */
-template <class T> class ast_list : public ast_member {
+template <class T> class ast_list : public _ast_list {
 public:
-    ///list type.
-    typedef std::list<T *> container;
-
     ///the default constructor.
     ast_list() {}
 
@@ -430,7 +454,7 @@ public:
     /** Pops objects of type T from the stack until no more objects can be popped.
         @param st stack.
      */
-    virtual void construct(ast_stack &st) {
+    virtual void construct(ast_stack &st) override {
         for(;;) {
             //if the stack is empty
             if (st.empty()) break;
@@ -455,11 +479,7 @@ public:
             obj->m_parent = ast_member::container();
         }
     }
-
 private:
-    //objects
-    container m_objects;
-
     //deletes the objects of this list.
     void _clear() {
         while (!m_objects.empty()) {
diff --git a/MoonParser/moon_ast.cpp b/MoonParser/moon_ast.cpp
index d8a0db9..9627eab 100644
--- a/MoonParser/moon_ast.cpp
+++ b/MoonParser/moon_ast.cpp
@@ -1,5 +1,4 @@
 #include <string>
-#include <codecvt>
 #include <unordered_set>
 #include <stack>
 #include <algorithm>
@@ -7,28 +6,24 @@
 #include <vector>
 #include "moon_ast.h"
 
-std::string& trim(std::string& s)
+input& trim(input& s)
 {
-        s.erase(s.begin(), std::find_if(s.begin(), s.end(), [](unsigned char ch)
+        s.erase(s.begin(), std::find_if(s.begin(), s.end(), [](input::value_type ch)
         {
                 return !std::isspace(ch);
         }));
-        s.erase(std::find_if(s.rbegin(), s.rend(), [](unsigned char ch)
+        s.erase(std::find_if(s.rbegin(), s.rend(), [](input::value_type ch)
         {
                 return !std::isspace(ch);
         }).base(), s.end());
         return s;
 }
 
-const std::string& AstLeaf::getValue()
+const input& AstLeaf::getValue()
 {
         if (_value.empty())
         {
-                for (auto it = m_begin.m_it; it != m_end.m_it; ++it)
-                {
-                        char ch = static_cast<char>(*it);
-                        _value.append(&ch, 1);
-                }
+                _value.assign(m_begin.m_it, m_end.m_it);
                 return trim(_value);
         }
         return _value;
@@ -151,9 +146,11 @@ AST_IMPL(BlockEnd)
 
 int main()
 {
-        std::wstring_convert<deletable_facet<std::codecvt<char32_t, char, std::mbstate_t>>, char32_t> conv;
-        std::string s = R"TestCodesHere()TestCodesHere";
-        input i = conv.from_bytes(s);
+        std::string s = R"TestCodesHere(
+thing = { var: 10, hello: "world", func: => @var }
+import hello, \func from thing
+)TestCodesHere";
+        input i = Converter{}.from_bytes(s);
 
         error_list el;
         BlockEnd_t* root = nullptr;
@@ -161,6 +158,21 @@ int main()
         if (parse(i, BlockEnd, el, root, &st))
         {
                 std::cout << "matched!\n";
+                root->visit([](ast_node* node)
+                {
+                        if (std::string("Seperator") != node->getName())
+                        {
+                                std::cout << "{" << node->getName();
+                        }
+                        return false;
+                }, [](ast_node* node)
+                {
+                        if (std::string("Seperator") != node->getName())
+                        {
+                                std::cout << "}" ;
+                        }
+                        return false;
+                });
         }
         else
         {
diff --git a/MoonParser/moon_ast.h b/MoonParser/moon_ast.h
index 7a0e805..4511b1b 100644
--- a/MoonParser/moon_ast.h
+++ b/MoonParser/moon_ast.h
@@ -2,23 +2,14 @@
 
 #include "moon_parser.h"
 
-template<class Facet>
-struct deletable_facet : Facet
-{
-    template<class ...Args>
-    deletable_facet(Args&& ...args): Facet(std::forward<Args>(args)...) {}
-    ~deletable_facet() {}
-};
-typedef std::wstring_convert<deletable_facet<std::codecvt<char32_t, char, std::mbstate_t>>, char32_t> Converter;
-
-std::string& trim(std::string& s);
+input& trim(input& s);
 
 class AstLeaf : public ast_node
 {
 public:
-        const std::string& getValue();
+        const input& getValue();
 private:
-        std::string _value;
+        input _value;
 };
 
 #define AST_LEAF(type) \
@@ -26,14 +17,16 @@ extern rule type; \
 class type##_t : public AstLeaf \
 { \
 public: \
-        virtual int get_type() override { return ast_type<type##_t>(); }
+        virtual int get_type() override { return ast_type<type##_t>(); } \
+        virtual const char* getName() const override { return #type; }
 
 #define AST_NODE(type) \
 extern rule type; \
 class type##_t : public ast_container \
 { \
 public: \
-        virtual int get_type() override { return ast_type<type##_t>(); }
+        virtual int get_type() override { return ast_type<type##_t>(); } \
+        virtual const char* getName() const override { return #type; }
 
 #define AST_END(type) \
 };
diff --git a/MoonParser/moon_parser.cpp b/MoonParser/moon_parser.cpp
index 3069659..7731513 100644
--- a/MoonParser/moon_parser.cpp
+++ b/MoonParser/moon_parser.cpp
@@ -1,8 +1,8 @@
 #include "moon_parser.h"
 
-rule Any = any();
 rule plain_space = *set(" \t");
 rule Break = nl(-expr('\r') >> '\n');
+rule Any = Break | any();
 rule White = *(set(" \t") | Break);
 rule Stop = Break | eof();
 rule Comment = "--" >> *(not_(set("\r\n")) >> Any) >> and_(Stop);
diff --git a/MoonParser/parser.cpp b/MoonParser/parser.cpp
index 6778368..2378abe 100644
--- a/MoonParser/parser.cpp
+++ b/MoonParser/parser.cpp
@@ -3,6 +3,8 @@
 #include <cassert>
 #include <stdexcept>
 #include <unordered_map>
+#include <unordered_set>
+
 #include "parser.hpp"
 
 
@@ -136,7 +138,7 @@ public:
     }
 
     //get the current symbol
-    int symbol() const {
+    input::value_type symbol() const {
         assert(!end());
         return *m_pos.m_it;
     }
@@ -212,7 +214,7 @@ public:
 class _char : public _expr {
 public:
     //constructor.
-    _char(int c) :
+    _char(char c) :
         m_char(c)
     {
     }
@@ -229,12 +231,12 @@ public:
 
 private:
     //character
-    int m_char;
+    input::value_type m_char;
 
     //internal parse
     bool _parse(_context &con) const {
         if (!con.end()) {
-            int ch = con.symbol();
+            input::value_type ch = con.symbol();
             if (ch == m_char) {
                 con.next_col();
                 return true;
@@ -251,13 +253,7 @@ class _string : public _expr {
 public:
     //constructor from ansi string.
     _string(const char *s) :
-        m_string(s, s + strlen(s))
-    {
-    }
-
-    //constructor from wide string.
-    _string(const wchar_t *s) :
-        m_string(s, s + wcslen(s))
+        m_string(Converter{}.from_bytes(s))
     {
     }
 
@@ -273,11 +269,11 @@ public:
 
 private:
     //string
-    std::vector<char32_t> m_string;
+    input m_string;
 
     //parse the string
     bool _parse(_context &con) const {
-        for(std::vector<char32_t>::const_iterator it = m_string.begin(),
+        for(input::const_iterator it = m_string.begin(),
             end = m_string.end();;)
         {
             if (it == end) return true;
@@ -297,25 +293,19 @@ class _set : public _expr {
 public:
     //constructor from ansi string.
     _set(const char *s) {
-        for(; *s; ++s) {
-            _add(*s);
-        }
-    }
-
-    //constructor from wide string.
-    _set(const wchar_t *s) {
-        for(; *s; ++s) {
-            _add(*s);
-        }
+        auto str = Converter{}.from_bytes(s);
+        for (auto ch : str) {
+                 _add(ch);
+        }
     }
 
     //constructor from range.
     _set(int min, int max) {
         assert(min >= 0);
         assert(min <= max);
-        m_set.resize((size_t)max + 1U);
+        m_quick_set.resize((size_t)max + 1U);
         for(; min <= max; ++min) {
-            m_set[(size_t)min] = true;
+            m_quick_set[(size_t)min] = true;
         }
     }
 
@@ -331,25 +321,35 @@ public:
 
 private:
     //set is kept as an array of flags, for quick access
-    std::vector<bool> m_set;
+    std::vector<bool> m_quick_set;
+    std::unordered_set<size_t> m_large_set;
 
     //add character
     void _add(size_t i) {
-        if (i >= m_set.size()) {
-            m_set.resize(i + 1);
-        }
-        m_set[i] = true;
+        if (i <= m_quick_set.size() || i <= 255) {
+                        if (i >= m_quick_set.size()) {
+                                m_quick_set.resize(i + 1);
+                        }
+                        m_quick_set[i] = true;
+                } else {
+                        m_large_set.insert(i);
+                }
     }
 
     //internal parse
     bool _parse(_context &con) const {
         if (!con.end()) {
             size_t ch = con.symbol();
-            if (ch < m_set.size() && m_set[ch]) {
+            if (ch < m_quick_set.size()) {
+                if (m_quick_set[ch]) {
+                                        con.next_col();
+                                        return true;
+                                }
+                        } else if (m_large_set.find(ch) != m_large_set.end()) {
                 con.next_col();
                 return true;
             }
-        }
+                }
         con.set_error_pos();
         return false;
     }
@@ -1074,7 +1074,7 @@ pos::pos(input &i) :
 /** character terminal constructor.
     @param c character.
  */
-expr::expr(int c) :
+expr::expr(char c) :
     m_expr(new _char(c))
 {
 }
@@ -1089,15 +1089,6 @@ expr::expr(const char *s) :
 }
 
 
-/** null-terminated wide string terminal constructor.
-    @param s null-terminated string.
- */
-expr::expr(const wchar_t *s) :
-    m_expr(new _string(s))
-{
-}
-
-
 /** rule reference constructor.
     @param r rule.
  */
@@ -1182,7 +1173,7 @@ bool error::operator < (const error &e) const {
 /** character terminal constructor.
     @param c character.
  */
-rule::rule(int c) :
+rule::rule(char c) :
     m_expr(new _char(c))
 {
     m_parse_proc = _get_parse_proc(this);
@@ -1199,16 +1190,6 @@ rule::rule(const char *s) :
 }
 
 
-/** null-terminated wide string terminal constructor.
-    @param s null-terminated string.
- */
-rule::rule(const wchar_t *s) :
-    m_expr(new _string(s))
-{
-    m_parse_proc = _get_parse_proc(this);
-}
-
-
 /** constructor from expression.
     @param e expression.
  */
@@ -1338,15 +1319,6 @@ expr set(const char *s) {
 }
 
 
-/** creates a set expression from a null-terminated wide string.
-    @param s null-terminated string with characters of the set.
-    @return an expression which parses a single character out of a set.
- */
-expr set(const wchar_t *s) {
-    return _private::construct_expr(new _set(s));
-}
-
-
 /** creates a range expression.
     @param min min character.
     @param max max character.
diff --git a/MoonParser/parser.hpp b/MoonParser/parser.hpp
index b280155..66d6067 100644
--- a/MoonParser/parser.hpp
+++ b/MoonParser/parser.hpp
@@ -13,8 +13,23 @@
 #include <string>
 #include <list>
 #include <functional>
+#include <codecvt>
+#include <locale>
 
 
+///type of the parser's input.
+typedef std::basic_string<char32_t> input;
+typedef input::iterator input_it;
+
+template<class Facet>
+struct deletable_facet : Facet
+{
+    template<class ...Args>
+    deletable_facet(Args&& ...args): Facet(std::forward<Args>(args)...) {}
+    ~deletable_facet() {}
+};
+typedef std::wstring_convert<deletable_facet<std::codecvt<input::value_type, char, std::mbstate_t>>, input::value_type> Converter;
+
 namespace parserlib {
 
 
@@ -24,9 +39,6 @@ class _context;
 class rule;
 
 
-///type of the parser's input.
-typedef std::u32string input;
-typedef input::iterator input_it;
 struct item_t
 {
         input_it begin;
@@ -65,18 +77,13 @@ public:
     /** character terminal constructor.
         @param c character.
      */
-    expr(int c);
+    expr(char c);
 
     /** null-terminated string terminal constructor.
         @param s null-terminated string.
      */
     expr(const char *s);
 
-    /** null-terminated wide string terminal constructor.
-        @param s null-terminated string.
-     */
-    expr(const wchar_t *s);
-
     /** rule reference constructor.
         @param r rule.
      */
@@ -195,18 +202,13 @@ public:
     /** character terminal constructor.
         @param c character.
      */
-    rule(int c);
+    rule(char c);
 
     /** null-terminated string terminal constructor.
         @param s null-terminated string.
      */
     rule(const char *s);
 
-    /** null-terminated wide string terminal constructor.
-        @param s null-terminated string.
-     */
-    rule(const wchar_t *s);
-
     /** constructor from expression.
         @param e expression.
      */
@@ -330,13 +332,6 @@ expr term(const expr &e);
 expr set(const char *s);
 
 
-/** creates a set expression from a null-terminated wide string.
-    @param s null-terminated string with characters of the set.
-    @return an expression which parses a single character out of a set.
- */
-expr set(const wchar_t *s);
-
-
 /** creates a range expression.
     @param min min character.
     @param max max character.