Add iterator for PathContext class

--HG--
branch : stable

diff --git a/Src/PathContext.cpp b/Src/PathContext.cpp
index 5d627a1..af88991 100644 (file)
--- a/Src/PathContext.cpp
+++ b/Src/PathContext.cpp
@@ -270,3 +270,19 @@ void PathContext::Swap()
        else
                m_path[0].m_sPath.swap(m_path[2].m_sPath);
 }
+
+PathContextIterator PathContext::begin() const
+{
+       return PathContextIterator(this);
+}
+
+PathContextIterator PathContext::end() const
+{
+       return PathContextIterator();
+}
+
+size_t PathContext::size() const
+{
+       return m_nFiles;
+}
+

diff --git a/Src/PathContext.h b/Src/PathContext.h
index 4483005..106eefc 100644 (file)
--- a/Src/PathContext.h
+++ b/Src/PathContext.h
@@ -14,6 +14,7 @@
 #include <vector>
 
 class PathContext;
+class PathContextIterator;
 
 /**
  * @brief Information for one path.
@@ -43,6 +44,8 @@ private:
 class PathContext
 {
 public:
+       typedef PathContextIterator const_iterator;
+
        PathContext();
        PathContext(const String& sLeft);
        PathContext(const String& sLeft, const String& sRight);
@@ -68,9 +71,62 @@ public:
        int GetSize() const;
        void RemoveAll();
        void Swap();
+
+       const_iterator begin() const;
+       const_iterator end() const;
+       size_t size() const;
 private:
        int m_nFiles;
        PathInfo m_path[3]; /**< First, second, third path (left path at start) */
 };
 
+class PathContextIterator : public std::iterator<std::forward_iterator_tag, String>
+{
+public:
+       PathContextIterator(const PathContext *pPathContext) : m_pPathContext(pPathContext)
+       {
+               m_sel =  (pPathContext->GetSize() == 0) ? -1 : 0;
+       }
+
+       PathContextIterator() : m_pPathContext(NULL), m_sel(-1)
+       {
+       }
+
+       ~PathContextIterator() {}
+
+       PathContextIterator& operator=(const PathContextIterator& it)
+       {
+               m_sel = it.m_sel;
+               m_pPathContext = it.m_pPathContext;
+               return *this;
+       }
+
+       PathContextIterator& operator++()
+       {
+               m_sel++;
+               if (m_sel >= m_pPathContext->GetSize())
+                       m_sel = -1;
+               return *this;
+       }
+
+       String operator*()
+       {
+               return m_pPathContext->GetAt(m_sel);
+       }
+
+       bool operator==(const PathContextIterator& it) const
+       {
+               return m_sel == it.m_sel;
+       }
+
+       bool operator!=(const PathContextIterator& it) const
+       {
+               return m_sel != it.m_sel;
+       }
+
+public:
+       const PathContext *m_pPathContext;
+       int m_sel;
+};
+
 #endif  // _PATH_CONTEXT_H_