Class: AutoC::List

Inherits:
Collection show all
Defined in:
lib/autoc/collection/list.rb

Overview

List is an ordered unidirectional sequence container. List supports submission/polling operations at one end hence it can be used as a LIFO container.

The collection’s C++ counterpart is std::forward_list<> template class.

Generated C interface

Collection management

cols=2*

|=== |void ~type~Copy(Type * dst, Type * src) | Create a new list dst filled with the contents of src. A copy operation is performed on every element in src.

NOTE: Previous contents of dst is overwritten.

|void ~type~Ctor(Type * self) | Create a new empty list self.

NOTE: Previous contents of self is overwritten.

|void ~type~Dtor(Type * self) | Destroy list self. Stored elements are destroyed as well by calling the respective destructors.

|int ~type~Equal(Type * lt, Type * rt) | Return non-zero value if lists lt and rt are considered equal by contents and zero value otherwise.

|size_t ~type~Identify(Type * self) | Return hash code for list self. |===

Basic operations

cols=2*

|=== |int ~type~Contains(Type * self, E what) | Return non-zero value if list self contains (at least) one element considered equal to what and zero value otherwise.

|int ~type~Empty(Type * self) | Return non-zero value if list self contains no elements and zero value otherwise.

|E ~type~Find(Type * self, E what) | Return the first element of stored in self which is considered equal to what.

WARNING: self must contain such element otherwise the behavior is undefined. See ~type~Contains().

|E ~type~Peek(Type * self) | Return a copy of the head element of self.

WARNING: self *must not* be empty otherwise the behavior is undefined. See ~type~Empty().

|E ~type~Pop(Type * self) | Remove head element of self and return it.

NOTE: The function returns the element itself, not a copy.

WARNING: self *must not* be empty otherwise the behavior is undefined. See ~type~Empty().

|void ~type~Purge(Type * self) | Remove and destroy all elements stored in self.

|void ~type~Push(Type * self, E what) | Place a copy of the element what to the head of self.

|int ~type~Replace(Type * self, E with) | Find the first occurrence of with in self and replace it with a copy of the element with. Replaced element is destroyed.

Return non-zero value on successful replacement and zero value if no suitable element was found.

|int ~type~ReplaceAll(Type * self, E with) | Find all occurrences of with in self and replace them with copies of the element with. All replaced elements are destroyed.

Return number of successful replacements.

|int ~type~ReplaceEx(Type * self, E with, int count) | Find at most count occurrences of with in self and replace them with copies of the element with. If count is negative, all occurrences are replaced instead. All replaced elements are destroyed.

Return number of successful replacements.

|int ~type~Remove(Type * self, E what) | Remove and destroy the first occurrence of the element what in self.

Return non-zero value if element was removed and zero value otherwise.

|int ~type~RemoveAll(Type * self, E what) | Remove and destroy all occurrences of the element what in self.

Return number of elements actually removed.

|int ~type~RemoveEx(Type * self, E what, int count) | Remove and destroy at most count occurrences of the element what in self. If count is negative, all occurrences are removed instead.

Return number of elements actually removed.

|size_t ~type~Size(Type * self) | Return number of elements stored in self. |===

Iteration

cols=2*

|=== |void ~it~Ctor(IteratorType * it, Type * self) | Create a new iterator it on list self.

NOTE: Previous contents of it is overwritten.

|int ~it~Move(IteratorType * it) | Advance iterator position of it and return non-zero value if new position is valid and zero value otherwise.

|E ~it~Get(IteratorType * it) | Return a copy of current element pointed to by the iterator it.

WARNING: current position must be valid otherwise the behavior is undefined. See ~it~Move(). |===

Constant Summary

Constants inherited from Type

Type::CommonCode

Instance Attribute Summary

Attributes inherited from Collection

#element

Attributes inherited from Type

#type

Instance Method Summary collapse

Methods inherited from Collection

coerce, #copy, #ctor, #dtor, #entities, #equal, #identify, #initialize, #less

Methods inherited from Type

#abort, #assert, #calloc, #entities, #extern, #free, #initialize, #inline, #malloc, #method_missing, #static, #write_decls, #write_defs, #write_intf

Methods inherited from Code

#attach, #entities, #priority, #source_size, #write_decls, #write_defs, #write_intf

Constructor Details

This class inherits a constructor from AutoC::Collection

Dynamic Method Handling

This class handles dynamic methods through the method_missing method in the class AutoC::Type

Instance Method Details

#write_exported_declarations(stream, declare, define) ⇒ Object 



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# File 'lib/autoc/collection/list.rb', line 183

def write_exported_declarations(stream, declare, define)
  stream << %$
    #{declare} void #{ctor}(#{type}*);
    #{declare} void #{dtor}(#{type}*);
    #{declare} void #{copy}(#{type}*, #{type}*);
    #{declare} int #{equal}(#{type}*, #{type}*);
    #{declare} size_t #{identify}(#{type}*);
    #{declare} void #{purge}(#{type}*);
    #{declare} #{element.type} #{peek}(#{type}*);
    #{declare} #{element.type} #{pop}(#{type}*);
    #{declare} void #{push}(#{type}*, #{element.type});
    #{declare} int #{contains}(#{type}*, #{element.type});
    #{declare} #{element.type} #{find}(#{type}*, #{element.type});
    #define #{replace}(self, with) #{replaceEx}(self, with, 1)
    #define #{replaceAll}(self, with) #{replaceEx}(self, with, -1)
    #{declare} int #{replaceEx}(#{type}*, #{element.type}, int);
    #define #{remove}(self, what) #{removeEx}(self, what, 1)
    #define #{removeAll}(self, what) #{removeEx}(self, what, -1)
    #{declare} int #{removeEx}(#{type}*, #{element.type}, int);
    #{declare} size_t #{size}(#{type}*);
    #define #{empty}(self) (#{size}(self) == 0)
    #{declare} void #{itCtor}(#{it}*, #{type}*);
    #{declare} int #{itMove}(#{it}*);
    #{declare} #{element.type} #{itGet}(#{it}*);
  $
end

#write_exported_types(stream) ⇒ Object 



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# File 'lib/autoc/collection/list.rb', line 157

def write_exported_types(stream)
  stream << %$
    /***
    **** #{type}<#{element.type}> (#{self.class})
    ***/
  $ if public?
  stream << %$
    typedef struct #{node} #{node};
    typedef struct #{type} #{type};
    typedef struct #{it} #{it};
    struct #{type} {
      #{node}* head_node;
      size_t node_count;
    };
    struct #{it} {
      int start;
      #{type}* list;
      #{node}* this_node;
    };
    struct #{node} {
      #{element.type} element;
      #{node}* next_node;
    };
  $
end

#write_implementations(stream, define) ⇒ Object 



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# File 'lib/autoc/collection/list.rb', line 210

def write_implementations(stream, define)
  stream << %$
    #{define} #{element.type}* #{itGetRef}(#{it}*);
    #{define} void #{ctor}(#{type}* self) {
      #{assert}(self);
      self->head_node = NULL;
      self->node_count = 0;
    }
    #{define} void #{dtor}(#{type}* self) {
      #{node}* node;
      #{assert}(self);
      node = self->head_node;
      while(node) {
        #{node}* this_node = node;
        node = node->next_node;
        #{element.dtor("this_node->element")};
        #{free}(this_node);
      }
    }
    #{define} void #{copy}(#{type}* dst, #{type}* src) {
      #{it} it;
      #{assert}(src);
      #{assert}(dst);
      #{ctor}(dst);
      #{itCtor}(&it, src);
      while(#{itMove}(&it)) {
        #{push}(dst, *#{itGetRef}(&it));
      }
    }
    #{define} int #{equal}(#{type}* lt, #{type}* rt) {
      if(#{size}(lt) == #{size}(rt)) {
        #{it} lit, rit;
        #{itCtor}(&lit, lt);
        #{itCtor}(&rit, rt);
        while(#{itMove}(&lit) && #{itMove}(&rit)) {
          int equal;
          #{element.type} *le, *re;
          le = #{itGetRef}(&lit);
          re = #{itGetRef}(&rit);
          equal = #{element.equal("*le", "*re")};
          if(!equal) return 0;
        }
        return 1;
      } else
        return 0;
    }
    #{define} size_t #{identify}(#{type}* self) {
      #{node}* node;
      size_t result = 0;
      #{assert}(self);
      for(node = self->head_node; node != NULL; node = node->next_node) {
        result ^= #{element.identify("node->element")};
        result = AUTOC_RCYCLE(result);
      }
      return result;
    }
    #{define} void #{purge}(#{type}* self) {
      #{dtor}(self);
      #{ctor}(self);
    }
    #{define} #{element.type} #{peek}(#{type}* self) {
      #{element.type} result;
      #{assert}(self);
      #{assert}(!#{empty}(self));
      #{element.copy("result", "self->head_node->element")};
      return result;
    }
    #{define} #{element.type} #{pop}(#{type}* self) {
      #{node}* node;
      #{element.type} result;
      #{assert}(self);
      #{assert}(!#{empty}(self));
      node = self->head_node;
      result = node->element;
      self->head_node = self->head_node->next_node;
      --self->node_count;
      #{free}(node);
      return result;
    }
    #{define} void #{push}(#{type}* self, #{element.type} element) {
      #{node}* node;
      #{assert}(self);
      node = (#{node}*)#{malloc}(sizeof(#{node})); #{assert}(node);
      #{element.copy("node->element", "element")};
      node->next_node = self->head_node;
      self->head_node = node;
      ++self->node_count;
    }
    #{define} int #{contains}(#{type}* self, #{element.type} what) {
      #{node}* node;
      int found = 0;
      #{assert}(self);
      node = self->head_node;
      while(node) {
        if(#{element.equal("node->element", "what")}) {
          found = 1;
          break;
        }
        node = node->next_node;
      }
      return found;
    }
    #{define} #{element.type} #{find}(#{type}* self, #{element.type} what) {
      #{node}* node;
      #{assert}(self);
      #{assert}(#{contains}(self, what));
      node = self->head_node;
      while(node) {
        if(#{element.equal("node->element", "what")}) {
          #{element.type} result;
          #{element.copy("result", "node->element")};
          return result;
        }
        node = node->next_node;
      }
      #{abort}();
    }
    #{define} int #{replaceEx}(#{type}* self, #{element.type} with, int count) {
      #{node}* node;
      int replaced = 0;
      #{assert}(self);
      if(count == 0) return 0;
      node = self->head_node;
      while(node) {
        if(#{element.equal("node->element", "with")}) {
          #{element.dtor("node->element")};
          #{element.copy("node->element", "with")};
          ++replaced;
          if(count > 0 && replaced >= count) break;
        }
        node = node->next_node;
      }
      return replaced;
    }
    #{define} int #{removeEx}(#{type}* self, #{element.type} what, int count) {
      #{node} *node, *prev_node;
      int removed = 0;
      #{assert}(self);
      if(count == 0) return 0;
      node = self->head_node;
      prev_node = NULL;
      while(node) {
        if(#{element.equal("node->element", "what")}) {
          #{node}* this_node;
          if(prev_node) {
            this_node = prev_node->next_node = node->next_node;
          } else {
            this_node = self->head_node = node->next_node;
          }
          ++removed;
          --self->node_count;
          #{element.dtor("node->element")};
          #{free}(node);
          node = this_node;
          if(count > 0 && removed >= count) break;
        } else {
          prev_node = node;
          node = node->next_node;
        }
      }
      return removed;
    }
    #{define} size_t #{size}(#{type}* self) {
      #{assert}(self);
      return self->node_count;
    }
    #{define} void #{itCtor}(#{it}* self, #{type}* list) {
      #{assert}(self);
      #{assert}(list);
      self->start = 1;
      self->list = list;
    }
    #{define} int #{itMove}(#{it}* self) {
      #{assert}(self);
      if(self->start) {
        self->this_node = self->list->head_node;
        self->start = 0;
      } else {
        self->this_node = self->this_node ? self->this_node->next_node : NULL;
      }
      return self->this_node != NULL;
    }
    #{define} #{element.type} #{itGet}(#{it}* self) {
      #{element.type} result;
      #{assert}(self);
      #{assert}(self->this_node);
      #{element.copy("result", "self->this_node->element")};
      return result;
    }
    #{define} #{element.type}* #{itGetRef}(#{it}* self) {
      #{assert}(self);
      #{assert}(self->this_node);
      return &self->this_node->element;
    }
  $
end