From a0d065cd22d1d43c417f6d3db88a04bf57b67ed0 Mon Sep 17 00:00:00 2001
From: Arseny Kapoulkine <arseny.kapoulkine@gmail.com>
Date: Sun, 12 Apr 2015 03:03:56 -0700
Subject: Implment copyless copy for attributes
Previously attributes that were copied with their node used string sharing,
but standalone attributes that were copied using xml_node::*_copy(xml_attribute)
were not.
---
src/pugixml.cpp | 57 ++++++++++++++++++++++++++++++++++++++++++---------------
1 file changed, 42 insertions(+), 15 deletions(-)
(limited to 'src')
diff --git a/src/pugixml.cpp b/src/pugixml.cpp
index 619cc7b..65854e7 100644
--- a/src/pugixml.cpp
+++ b/src/pugixml.cpp
@@ -557,11 +557,11 @@ PUGI__NS_BEGIN
xml_extra_buffer* extra_buffers;
};
- inline xml_allocator& get_allocator(const xml_node_struct* node)
+ template <typename Object> inline xml_allocator& get_allocator(const Object* object)
{
- assert(node);
+ assert(object);
- return *reinterpret_cast<xml_memory_page*>(node->header & xml_memory_page_pointer_mask)->allocator;
+ return *reinterpret_cast<xml_memory_page*>(object->header & xml_memory_page_pointer_mask)->allocator;
}
template <typename Object> inline xml_document_struct& get_document(const Object* object)
@@ -3824,6 +3824,15 @@ PUGI__NS_BEGIN
}
}
+ PUGI__FN void node_copy_attribute(xml_attribute_struct* da, xml_attribute_struct* sa)
+ {
+ xml_allocator& alloc = get_allocator(da);
+ xml_allocator* shared_alloc = (&alloc == &get_allocator(sa)) ? &alloc : 0;
+
+ node_copy_string(da->name, da->header, xml_memory_page_name_allocated_mask, sa->name, sa->header, shared_alloc);
+ node_copy_string(da->value, da->header, xml_memory_page_value_allocated_mask, sa->value, sa->header, shared_alloc);
+ }
+
inline bool is_text_node(xml_node_struct* node)
{
xml_node_type type = PUGI__NODETYPE(node);
@@ -4986,41 +4995,59 @@ namespace pugi
PUGI__FN xml_attribute xml_node::append_copy(const xml_attribute& proto)
{
if (!proto) return xml_attribute();
+ if (!impl::allow_insert_attribute(type())) return xml_attribute();
- xml_attribute result = append_attribute(proto.name());
- result.set_value(proto.value());
+ xml_attribute a(impl::allocate_attribute(impl::get_allocator(_root)));
+ if (!a) return xml_attribute();
- return result;
+ impl::append_attribute(a._attr, _root);
+ impl::node_copy_attribute(a._attr, proto._attr);
+
+ return a;
}
PUGI__FN xml_attribute xml_node::prepend_copy(const xml_attribute& proto)
{
if (!proto) return xml_attribute();
+ if (!impl::allow_insert_attribute(type())) return xml_attribute();
- xml_attribute result = prepend_attribute(proto.name());
- result.set_value(proto.value());
+ xml_attribute a(impl::allocate_attribute(impl::get_allocator(_root)));
+ if (!a) return xml_attribute();
- return result;
+ impl::prepend_attribute(a._attr, _root);
+ impl::node_copy_attribute(a._attr, proto._attr);
+
+ return a;
}
PUGI__FN xml_attribute xml_node::insert_copy_after(const xml_attribute& proto, const xml_attribute& attr)
{
if (!proto) return xml_attribute();
+ if (!impl::allow_insert_attribute(type())) return xml_attribute();
+ if (!attr || !impl::is_attribute_of(attr._attr, _root)) return xml_attribute();
- xml_attribute result = insert_attribute_after(proto.name(), attr);
- result.set_value(proto.value());
+ xml_attribute a(impl::allocate_attribute(impl::get_allocator(_root)));
+ if (!a) return xml_attribute();
- return result;
+ impl::insert_attribute_after(a._attr, attr._attr, _root);
+ impl::node_copy_attribute(a._attr, proto._attr);
+
+ return a;
}
PUGI__FN xml_attribute xml_node::insert_copy_before(const xml_attribute& proto, const xml_attribute& attr)
{
if (!proto) return xml_attribute();
+ if (!impl::allow_insert_attribute(type())) return xml_attribute();
+ if (!attr || !impl::is_attribute_of(attr._attr, _root)) return xml_attribute();
+
+ xml_attribute a(impl::allocate_attribute(impl::get_allocator(_root)));
+ if (!a) return xml_attribute();
- xml_attribute result = insert_attribute_before(proto.name(), attr);
- result.set_value(proto.value());
+ impl::insert_attribute_before(a._attr, attr._attr, _root);
+ impl::node_copy_attribute(a._attr, proto._attr);
- return result;
+ return a;
}
PUGI__FN xml_node xml_node::append_child(xml_node_type type_)
--
cgit v1.2.3