replace Util::SharedCStringPtr with the more general Util::shared_ptr<>

(bzr r87)

1 files changed, 149 insertions, 0 deletions

diff --git a/src/util/share.h b/src/util/share.h
new file mode 100644
index 000000000..e9e6c5eb0
--- /dev/null
+++ b/src/util/share.h
@@ -0,0 +1,149 @@
+/*
+ * Inkscape::Util::shared_ptr<T> - like T const *, but stronger
+ *
+ * Authors:
+ *   MenTaLguY <mental@rydia.net>
+ *
+ * Copyright (C) 2006 MenTaLguY
+ *
+ * Released under GNU GPL, read the file 'COPYING' for more information
+ */
+
+#ifndef SEEN_INKSCAPE_UTIL_SHARE_H
+#define SEEN_INKSCAPE_UTIL_SHARE_H
+
+#include "gc-core.h"
+#include <cstring>
+
+namespace Inkscape {
+namespace Util {
+
+template <typename T>
+class shared_ptr {
+public:
+    shared_ptr() : _obj(NULL) {}
+
+    template <typename T1>
+    shared_ptr(shared_ptr<T1> const &other) : _obj(other._obj) {}
+
+    T const *pointer() const { return _obj; }
+
+    template <typename T1>
+    operator T1 const *() const { return _obj; }
+
+    operator bool() const { return _obj; }
+
+    T const &operator*() const { return *_obj; }
+    T const *operator->() const { return _obj; }
+    T const &operator[](int i) const { return _obj[i]; }
+
+    shared_ptr<T> operator+(int i) const {
+        return share_unsafe(_obj+i);
+    }
+    shared_ptr<T> operator-(int i) const {
+        return share_unsafe(_obj-i);
+    }
+
+    shared_ptr<T> &operator+=(int i) const {
+        _obj += i;
+        return *this;
+    }
+    shared_ptr<T> &operator-=(int i) const {
+        _obj -= i;
+        return *this;
+    }
+
+    template <typename T1>
+    std::ptrdiff_t operator-(shared_ptr<T1> const &other) {
+        return _obj - other._obj;
+    }
+
+    template <typename T1>
+    shared_ptr<T> &operator=(shared_ptr<T1> const &other) {
+        _obj = other._obj;
+        return *this;
+    }
+
+    template <typename T1>
+    bool operator==(shared_ptr<T1> const &other) const {
+        return _obj == other._obj;
+    }
+
+    template <typename T1>
+    bool operator!=(shared_ptr<T1> const &other) const {
+        return _obj != other._obj;
+    }
+
+    template <typename T1>
+    bool operator>(shared_ptr<T1> const &other) const {
+        return _obj > other._obj;
+    }
+
+    template <typename T1>
+    bool operator<(shared_ptr<T1> const &other) const {
+        return _obj < other._obj;
+    }
+
+    static shared_ptr<T> share_unsafe(T const *obj) {
+        return shared_ptr<T>(obj);
+    }
+
+protected:
+    explicit shared_ptr(T const *obj) : _obj(obj) {}
+
+private:
+    T const *_obj;
+};
+
+template <typename T>
+inline shared_ptr<T> share(T const *obj) {
+    return share_unsafe(obj ? new T(*obj) : NULL);
+}
+
+shared_ptr<char> share_string(char const *string);
+shared_ptr<char> share_string(char const *string, std::size_t length);
+
+template <typename T>
+inline shared_ptr<T> reshare(T const *obj) {
+    return shared_ptr<T>::share_unsafe(obj);
+}
+
+template <typename T>
+inline shared_ptr<T> share_unsafe(T const *obj) {
+    return shared_ptr<T>::share_unsafe(obj);
+}
+
+template <typename T>
+inline shared_ptr<T> share_static(T const *obj) {
+    return shared_ptr<T>::share_unsafe(obj);
+}
+
+template <typename T1, typename T2>
+inline shared_ptr<T1> static_cast_shared(shared_ptr<T2> const &ref) {
+    return reshare(static_cast<T1 const *>(ref.pointer()));
+}
+
+template <typename T1, typename T2>
+inline shared_ptr<T1> dynamic_cast_shared(shared_ptr<T2> const &ref) {
+    return reshare(dynamic_cast<T1 const *>(ref.pointer()));
+}
+
+template <typename T1, typename T2>
+inline shared_ptr<T1> reinterpret_cast_shared(shared_ptr<T2> const &ref) {
+    return reshare(reinterpret_cast<T1 const *>(ref.pointer()));
+}
+
+}
+}
+
+#endif
+/*
+  Local Variables:
+  mode:c++
+  c-file-style:"stroustrup"
+  c-file-offsets:((innamespace . 0)(inline-open . 0)(case-label . +))
+  indent-tabs-mode:nil
+  fill-column:99
+  End:
+*/
+// vim: filetype=cpp:expandtab:shiftwidth=4:tabstop=8:softtabstop=4:encoding=utf-8:textwidth=99 :