//
// $Id$
+#ifdef HAVE_CONFIG_H
+# include <simgear_config.h>
+#endif
+
#include "props.hxx"
+#include "vectorPropTemplates.hxx"
#include <algorithm>
+#include <limits>
+#include <set>
#include <sstream>
#include <iomanip>
+#include <iterator>
#include <stdio.h>
#include <string.h>
-#include <simgear/math/SGMath.hxx>
+#include <boost/algorithm/string/find_iterator.hpp>
+#include <boost/algorithm/string/predicate.hpp>
+#include <boost/algorithm/string/classification.hpp>
+#include <boost/bind.hpp>
+#include <boost/functional/hash.hpp>
+#include <boost/range.hpp>
#if PROPS_STANDALONE
#include <iostream>
// Local path normalization code.
////////////////////////////////////////////////////////////////////////
-/**
- * A component in a path.
- */
-struct PathComponent
-{
- string name;
- int index;
-};
-
/**
* Parse the name for a path component.
*
* Name: [_a-zA-Z][-._a-zA-Z0-9]*
*/
-static inline const string
-parse_name (const string &path, int &i)
+
+template<typename Range>
+inline Range
+parse_name (const SGPropertyNode *node, const Range &path)
{
- string name = "";
- int max = path.size();
+ typename Range::iterator i = path.begin();
+ typename Range::iterator max = path.end();
- if (path[i] == '.') {
+ if (*i == '.') {
i++;
- if (i < max && path[i] == '.') {
+ if (i != path.end() && *i == '.') {
i++;
- name = "..";
- } else {
- name = ".";
}
- if (i < max && path[i] != '/')
- throw string("illegal character after " + name);
- }
-
- else if (isalpha(path[i]) || path[i] == '_') {
- name += path[i];
+ if (i != max && *i != '/')
+ throw string("illegal character after . or ..");
+ } else if (isalpha(*i) || *i == '_') {
i++;
// The rules inside a name are a little
// less restrictive.
- while (i < max) {
- if (isalpha(path[i]) || isdigit(path[i]) || path[i] == '_' ||
- path[i] == '-' || path[i] == '.') {
- name += path[i];
- } else if (path[i] == '[' || path[i] == '/') {
+ while (i != max) {
+ if (isalpha(*i) || isdigit(*i) || *i == '_' ||
+ *i == '-' || *i == '.') {
+ // name += path[i];
+ } else if (*i == '[' || *i == '/') {
break;
} else {
- throw string("name may contain only ._- and alphanumeric characters");
+ string err = "'";
+ err.push_back(*i);
+ err.append("' found in propertyname after '"+node->getNameString()+"'");
+ err.append("\nname may contain only ._- and alphanumeric characters");
+ throw err;
}
i++;
}
}
else {
- if (name.size() == 0)
- throw string("name must begin with alpha or '_'");
- }
-
- return name;
-}
-
-
-/**
- * Parse the optional integer index for a path component.
- *
- * Index: "[" [0-9]+ "]"
- */
-static inline int
-parse_index (const string &path, int &i)
-{
- int index = 0;
-
- if (path[i] != '[')
- return 0;
- else
- i++;
-
- for (int max = path.size(); i < max; i++) {
- if (isdigit(path[i])) {
- index = (index * 10) + (path[i] - '0');
- } else if (path[i] == ']') {
- i++;
- return index;
- } else {
- break;
+ if (path.begin() == i) {
+ string err = "'";
+ err.push_back(*i);
+ err.append("' found in propertyname after '"+node->getNameString()+"'");
+ err.append("\nname must begin with alpha or '_'");
+ throw err;
}
}
-
- throw string("unterminated index (looking for ']')");
+ return Range(path.begin(), i);
}
-
-/**
- * Parse a single path component.
- *
- * Component: Name Index?
- */
-static inline PathComponent
-parse_component (const string &path, int &i)
-{
- PathComponent component;
- component.name = parse_name(path, i);
- if (component.name[0] != '.')
- component.index = parse_index(path, i);
- else
- component.index = -1;
- return component;
-}
-
-
-/**
- * Parse a path into its components.
- */
-static void
-parse_path (const string &path, vector<PathComponent> &components)
+// Validate the name of a single node
+inline bool validateName(const string& name)
{
- int pos = 0;
- int max = path.size();
-
- // Check for initial '/'
- if (path[pos] == '/') {
- PathComponent root;
- root.name = "";
- root.index = -1;
- components.push_back(root);
- pos++;
- while (pos < max && path[pos] == '/')
- pos++;
- }
-
- while (pos < max) {
- components.push_back(parse_component(path, pos));
- while (pos < max && path[pos] == '/')
- pos++;
- }
+ using namespace boost;
+ if (name.empty())
+ return false;
+ if (!isalpha(name[0]) && name[0] != '_')
+ return false;
+ return all(make_iterator_range(name.begin(), name.end()),
+ is_alnum() || is_any_of("_-."));
}
-
\f
////////////////////////////////////////////////////////////////////////
// Other static utility functions.
/**
* Locate a child node by name and index.
*/
+template<typename Itr>
static int
-find_child (const char * name, int index, const PropertyList& nodes)
+find_child (Itr begin, Itr end, int index, const PropertyList& nodes)
{
int nNodes = nodes.size();
+ boost::iterator_range<Itr> name(begin, end);
for (int i = 0; i < nNodes; i++) {
SGPropertyNode * node = nodes[i];
// searching for a mathing index is a lot less time consuming than
// comparing two strings so do that first.
- if (node->getIndex() == index && compare_strings(node->getName(), name))
+ if (node->getIndex() == index && boost::equals(node->getName(), name))
return i;
}
return -1;
return index;
}
-
/**
- * Locate another node, given a relative path.
+ * Get first unused index for child nodes with the given name
*/
-static SGPropertyNode *
-find_node (SGPropertyNode * current,
- const vector<PathComponent> &components,
- int position,
- bool create)
+static int
+first_unused_index( const char * name,
+ const PropertyList& nodes,
+ int min_index )
{
- // Run off the end of the list
- if (current == 0) {
- return 0;
- }
+ const char* nameEnd = name + strlen(name);
- // Success! This is the one we want.
- else if (position >= (int)components.size()) {
- return (current->getAttribute(SGPropertyNode::REMOVED) ? 0 : current);
+ for( int index = min_index; index < std::numeric_limits<int>::max(); ++index )
+ {
+ if( find_child(name, nameEnd, index, nodes) < 0 )
+ return index;
}
- // Empty component means root.
- else if (components[position].name == "") {
- return find_node(current->getRootNode(), components, position + 1, create);
+ SG_LOG(SG_GENERAL, SG_ALERT, "Too much nodes: " << name);
+ return -1;
+}
+
+template<typename Itr>
+inline SGPropertyNode*
+SGPropertyNode::getExistingChild (Itr begin, Itr end, int index, bool create)
+{
+ int pos = find_child(begin, end, index, _children);
+ if (pos >= 0) {
+ return _children[pos];
+ } else if (create) {
+ SGPropertyNode_ptr node;
+ pos = find_child(begin, end, index, _removedChildren);
+ if (pos >= 0) {
+ PropertyList::iterator it = _removedChildren.begin();
+ it += pos;
+ node = _removedChildren[pos];
+ _removedChildren.erase(it);
+ node->setAttribute(REMOVED, false);
+ _children.push_back(node);
+ fireChildAdded(node);
+ return node;
+ }
}
+ return 0;
+}
+
+template<typename Itr>
+SGPropertyNode *
+SGPropertyNode::getChildImpl (Itr begin, Itr end, int index, bool create)
+{
+ SGPropertyNode* node = getExistingChild(begin, end, index, create);
- // . means current directory
- else if (components[position].name == ".") {
- return find_node(current, components, position + 1, create);
+ if (node) {
+ return node;
+ } else if (create) {
+ node = new SGPropertyNode(begin, end, index, this);
+ _children.push_back(node);
+ fireChildAdded(node);
+ return node;
+ } else {
+ return 0;
+ }
+}
+
+template<typename SplitItr>
+SGPropertyNode*
+find_node_aux(SGPropertyNode * current, SplitItr& itr, bool create,
+ int last_index)
+{
+ typedef typename SplitItr::value_type Range;
+ // Run off the end of the list
+ if (current == 0) {
+ return 0;
}
- // .. means parent directory
- else if (components[position].name == "..") {
+ // Success! This is the one we want.
+ if (itr.eof())
+ return current;
+ Range token = *itr;
+ // Empty name at this point is empty, not root.
+ if (token.empty())
+ return find_node_aux(current, ++itr, create, last_index);
+ Range name = parse_name(current, token);
+ if (equals(name, "."))
+ return find_node_aux(current, ++itr, create, last_index);
+ if (equals(name, "..")) {
SGPropertyNode * parent = current->getParent();
if (parent == 0)
throw string("attempt to move past root with '..'");
- else
- return find_node(parent, components, position + 1, create);
- }
-
- // Otherwise, a child name
- else {
- SGPropertyNode * child =
- current->getChild(components[position].name.c_str(),
- components[position].index,
- create);
- return find_node(child, components, position + 1, create);
+ return find_node_aux(parent, ++itr, create, last_index);
+ }
+ int index = -1;
+ if (last_index >= 0) {
+ // If we are at the last token and last_index is valid, use
+ // last_index as the index value
+ bool lastTok = true;
+ while (!(++itr).eof()) {
+ if (!itr->empty()) {
+ lastTok = false;
+ break;
+ }
+ }
+ if (lastTok)
+ index = last_index;
+ } else {
+ ++itr;
+ }
+
+ if (index < 0) {
+ index = 0;
+ if (name.end() != token.end()) {
+ if (*name.end() == '[') {
+ typename Range::iterator i = name.end() + 1, end = token.end();
+ for (;i != end; ++i) {
+ if (isdigit(*i)) {
+ index = (index * 10) + (*i - '0');
+ } else {
+ break;
+ }
+ }
+ if (i == token.end() || *i != ']')
+ throw string("unterminated index (looking for ']')");
+ } else {
+ throw string("illegal characters in token: ")
+ + string(name.begin(), name.end());
+ }
+ }
}
+ return find_node_aux(current->getChildImpl(name.begin(), name.end(),
+ index, create), itr, create,
+ last_index);
}
+// Internal function for parsing property paths. last_index provides
+// and index value for the last node name token, if supplied.
+template<typename Range>
+SGPropertyNode*
+find_node (SGPropertyNode * current,
+ const Range& path,
+ bool create,
+ int last_index = -1)
+{
+ using namespace boost;
+ typedef split_iterator<typename range_result_iterator<Range>::type>
+ PathSplitIterator;
+
+ PathSplitIterator itr
+ = make_split_iterator(path, first_finder("/", is_equal()));
+ if (*path.begin() == '/')
+ return find_node_aux(current->getRootNode(), itr, create, last_index);
+ else
+ return find_node_aux(current, itr, create, last_index);
+}
\f
////////////////////////////////////////////////////////////////////////
}
_local_val.string_val = 0;
break;
+ default: // avoid compiler warning
+ break;
}
delete _value.val;
_value.val = 0;
* Last used attribute
* Update as needed when enum Attribute is changed
*/
-const int SGPropertyNode::LAST_USED_ATTRIBUTE = USERARCHIVE;
+const int SGPropertyNode::LAST_USED_ATTRIBUTE = PRESERVE;
/**
* Default constructor: always creates a root node.
SGPropertyNode::SGPropertyNode ()
: _index(0),
_parent(0),
- _path_cache(0),
_type(props::NONE),
_tied(false),
_attr(READ|WRITE),
* Copy constructor.
*/
SGPropertyNode::SGPropertyNode (const SGPropertyNode &node)
- : _index(node._index),
+ : SGReferenced(node),
+ _index(node._index),
_name(node._name),
_parent(0), // don't copy the parent
- _path_cache(0),
_type(node._type),
_tied(node._tied),
_attr(node._attr),
/**
* Convenience constructor.
*/
-SGPropertyNode::SGPropertyNode (const char * name,
+template<typename Itr>
+SGPropertyNode::SGPropertyNode (Itr begin, Itr end,
int index,
SGPropertyNode * parent)
: _index(index),
+ _name(begin, end),
_parent(parent),
- _path_cache(0),
_type(props::NONE),
_tied(false),
_attr(READ|WRITE),
_listeners(0)
{
- int i = 0;
_local_val.string_val = 0;
_value.val = 0;
- _name = parse_name(name, i);
- if (i != int(strlen(name)) || name[0] == '.')
- throw string("plain name expected instead of '") + name + '\'';
+ if (!validateName(_name))
+ throw string("plain name expected instead of '") + _name + '\'';
}
+SGPropertyNode::SGPropertyNode (const string& name,
+ int index,
+ SGPropertyNode * parent)
+ : _index(index),
+ _name(name),
+ _parent(parent),
+ _type(props::NONE),
+ _tied(false),
+ _attr(READ|WRITE),
+ _listeners(0)
+{
+ _local_val.string_val = 0;
+ _value.val = 0;
+ if (!validateName(name))
+ throw string("plain name expected instead of '") + _name + '\'';
+}
/**
* Destructor.
_children[i]->_parent = 0;
for (unsigned i = 0; i < _removedChildren.size(); ++i)
_removedChildren[i]->_parent = 0;
- delete _path_cache;
clearValue();
if (_listeners) {
bool
SGPropertyNode::alias (SGPropertyNode * target)
{
- if (target == 0 || _type == props::ALIAS || _tied)
- return false;
- clearValue();
- get(target);
- _value.alias = target;
- _type = props::ALIAS;
- return true;
+ if (target && (_type != props::ALIAS) && (!_tied))
+ {
+ clearValue();
+ get(target);
+ _value.alias = target;
+ _type = props::ALIAS;
+ return true;
+ }
+
+#if PROPS_STANDALONE
+#else
+ if (!target)
+ {
+ SG_LOG(SG_GENERAL, SG_ALERT,
+ "Failed to create alias for " << getPath() << ". "
+ "The target property does not exist.");
+ }
+ else
+ if (_type == props::ALIAS)
+ {
+ if (_value.alias == target)
+ return true; // ok, identical alias requested
+ SG_LOG(SG_GENERAL, SG_ALERT,
+ "Failed to create alias at " << target->getPath() << ". "
+ "Source "<< getPath() << " is already aliasing another property.");
+ }
+ else
+ if (_tied)
+ {
+ SG_LOG(SG_GENERAL, SG_ALERT, "Failed to create alias at " << target->getPath() << ". "
+ "Source " << getPath() << " is a tied property.");
+ }
+#endif
+
+ return false;
}
* create a non-const child by name after the last node with the same name.
*/
SGPropertyNode *
-SGPropertyNode::addChild (const char * name)
+SGPropertyNode::addChild(const char * name, int min_index, bool append)
{
- int pos = find_last_child(name, _children)+1;
+ int pos = append
+ ? std::max(find_last_child(name, _children) + 1, min_index)
+ : first_unused_index(name, _children, min_index);
SGPropertyNode_ptr node;
- node = new SGPropertyNode(name, pos, this);
+ node = new SGPropertyNode(name, name + strlen(name), pos, this);
_children.push_back(node);
fireChildAdded(node);
return node;
}
+/**
+ * Create multiple children with unused indices
+ */
+simgear::PropertyList
+SGPropertyNode::addChildren( const std::string& name,
+ size_t count,
+ int min_index,
+ bool append )
+{
+ simgear::PropertyList nodes;
+ std::set<int> used_indices;
+
+ if( !append )
+ {
+ // First grab all used indices. This saves us of testing every index if it
+ // is used for every element to be created
+ for( size_t i = 0; i < nodes.size(); i++ )
+ {
+ const SGPropertyNode* node = nodes[i];
+
+ if( node->getNameString() == name && node->getIndex() >= min_index )
+ used_indices.insert(node->getIndex());
+ }
+ }
+ else
+ {
+ // If we don't want to fill the holes just find last node
+ min_index = std::max(find_last_child(name.c_str(), _children) + 1, min_index);
+ }
+
+ for( int index = min_index;
+ index < std::numeric_limits<int>::max() && nodes.size() < count;
+ ++index )
+ {
+ if( used_indices.find(index) == used_indices.end() )
+ {
+ SGPropertyNode_ptr node;
+ node = new SGPropertyNode(name, index, this);
+ _children.push_back(node);
+ fireChildAdded(node);
+ nodes.push_back(node);
+ }
+ }
+
+ return nodes;
+}
/**
* Get a non-const child by index.
/**
* Get a non-const child by name and index, creating if necessary.
*/
+
SGPropertyNode *
SGPropertyNode::getChild (const char * name, int index, bool create)
{
- int pos = find_child(name, index, _children);
- if (pos >= 0) {
- return _children[pos];
- } else if (create) {
- SGPropertyNode_ptr node;
- pos = find_child(name, index, _removedChildren);
- if (pos >= 0) {
- PropertyList::iterator it = _removedChildren.begin();
- it += pos;
- node = _removedChildren[pos];
- _removedChildren.erase(it);
- node->setAttribute(REMOVED, false);
- } else {
+ return getChildImpl(name, name + strlen(name), index, create);
+}
+
+SGPropertyNode *
+SGPropertyNode::getChild (const string& name, int index, bool create)
+{
+ SGPropertyNode* node = getExistingChild(name.begin(), name.end(), index,
+ create);
+ if (node) {
+ return node;
+ } else if (create) {
node = new SGPropertyNode(name, index, this);
+ _children.push_back(node);
+ fireChildAdded(node);
+ return node;
+ } else {
+ return 0;
}
- _children.push_back(node);
- fireChildAdded(node);
- return node;
- } else {
- return 0;
- }
}
-
/**
* Get a const child by name and index.
*/
const SGPropertyNode *
SGPropertyNode::getChild (const char * name, int index) const
{
- int pos = find_child(name, index, _children);
+ int pos = find_child(name, name + strlen(name), index, _children);
if (pos >= 0)
return _children[pos];
else
}
-/**
- * Remove this node and all children from nodes that link to them
- * in their path cache.
- */
-void
-SGPropertyNode::remove_from_path_caches ()
-{
- for (unsigned int i = 0; i < _children.size(); ++i)
- _children[i]->remove_from_path_caches();
-
- for (unsigned int i = 0; i < _linkedNodes.size(); i++)
- _linkedNodes[i]->erase(this);
- _linkedNodes.clear();
-}
-
-
/**
* Remove child by position.
*/
_removedChildren.push_back(node);
}
- node->remove_from_path_caches();
node->setAttribute(REMOVED, true);
node->clearValue();
fireChildRemoved(node);
SGPropertyNode::removeChild (const char * name, int index, bool keep)
{
SGPropertyNode_ptr ret;
- int pos = find_child(name, index, _children);
+ int pos = find_child(name, name + strlen(name), index, _children);
if (pos >= 0)
ret = removeChild(pos, keep);
return ret;
return children;
}
-
-/**
- * Remove a linked node.
- */
-bool
-SGPropertyNode::remove_linked_node (hash_table * node)
-{
- for (unsigned int i = 0; i < _linkedNodes.size(); i++) {
- if (_linkedNodes[i] == node) {
- vector<hash_table *>::iterator it = _linkedNodes.begin();
- it += i;
- _linkedNodes.erase(it);
- return true;
- }
- }
- return false;
-}
-
-
string
SGPropertyNode::getDisplayName (bool simplify) const
{
return display_name;
}
-
-const char *
+string
SGPropertyNode::getPath (bool simplify) const
{
- // Calculate the complete path only once.
- if (_parent != 0 && _path.empty()) {
- _path = _parent->getPath(simplify);
- _path += '/';
- _path += getDisplayName(simplify);
+ typedef std::vector<SGConstPropertyNode_ptr> PList;
+ PList pathList;
+ for (const SGPropertyNode* node = this; node->_parent; node = node->_parent)
+ pathList.push_back(node);
+ string result;
+ for (PList::reverse_iterator itr = pathList.rbegin(),
+ rend = pathList.rend();
+ itr != rend;
+ ++itr) {
+ result += '/';
+ result += (*itr)->getDisplayName(simplify);
}
-
- return _path.c_str();
+ return result;
}
props::Type
break;
case props::NONE:
break;
+ default: // avoid compiler warning
+ break;
}
return stream;
}
_tied = true;
_value.val = rawValue.clone();
- if (useDefault)
+ if (useDefault) {
+ int save_attributes = getAttributes();
+ setAttribute( WRITE, true );
setStringValue(old_val.c_str());
+ setAttributes( save_attributes );
+ }
return true;
}
SGPropertyNode *
SGPropertyNode::getNode (const char * relative_path, bool create)
{
- if (_path_cache == 0)
- _path_cache = new hash_table;
+ using namespace boost;
- SGPropertyNode * result = _path_cache->get(relative_path);
- if (result == 0) {
- vector<PathComponent> components;
- parse_path(relative_path, components);
- result = find_node(this, components, 0, create);
- if (result != 0)
- _path_cache->put(relative_path, result);
- }
-
- return result;
+ return find_node(this, make_iterator_range(relative_path, relative_path
+ + strlen(relative_path)),
+ create);
}
SGPropertyNode *
SGPropertyNode::getNode (const char * relative_path, int index, bool create)
{
- vector<PathComponent> components;
- parse_path(relative_path, components);
- if (components.size() > 0)
- components.back().index = index;
- return find_node(this, components, 0, create);
+ using namespace boost;
+ return find_node(this, make_iterator_range(relative_path, relative_path
+ + strlen(relative_path)),
+ create, index);
}
const SGPropertyNode *
void
SGPropertyNode::removeChangeListener (SGPropertyChangeListener * listener)
{
+ if (_listeners == 0)
+ return;
vector<SGPropertyChangeListener*>::iterator it =
find(_listeners->begin(), _listeners->end(), listener);
if (it != _listeners->end()) {
_parent->fireChildRemoved(parent, child);
}
-
-\f
-////////////////////////////////////////////////////////////////////////
-// Simplified hash table for caching paths.
-////////////////////////////////////////////////////////////////////////
-
-#define HASH_TABLE_SIZE 199
-
-SGPropertyNode::hash_table::entry::entry ()
- : _value(0)
-{
-}
-
-SGPropertyNode::hash_table::entry::~entry ()
-{
- // Don't delete the value; we don't own
- // the pointer.
-}
-
-void
-SGPropertyNode::hash_table::entry::set_key (const char * key)
-{
- _key = key;
-}
-
-void
-SGPropertyNode::hash_table::entry::set_value (SGPropertyNode * value)
-{
- _value = value;
-}
-
-SGPropertyNode::hash_table::bucket::bucket ()
- : _length(0),
- _entries(0)
-{
-}
-
-SGPropertyNode::hash_table::bucket::~bucket ()
-{
- for (int i = 0; i < _length; i++)
- delete _entries[i];
- delete [] _entries;
-}
-
-SGPropertyNode::hash_table::entry *
-SGPropertyNode::hash_table::bucket::get_entry (const char * key, bool create)
-{
- int i;
- for (i = 0; i < _length; i++) {
- if (!strcmp(_entries[i]->get_key(), key))
- return _entries[i];
- }
- if (create) {
- entry ** new_entries = new entry*[_length+1];
- for (i = 0; i < _length; i++) {
- new_entries[i] = _entries[i];
- }
- delete [] _entries;
- _entries = new_entries;
- _entries[_length] = new entry;
- _entries[_length]->set_key(key);
- _length++;
- return _entries[_length - 1];
- } else {
- return 0;
- }
-}
-
-bool
-SGPropertyNode::hash_table::bucket::erase (SGPropertyNode * node)
-{
- for (int i = 0; i < _length; i++) {
- if (_entries[i]->get_value() == node) {
- delete _entries[i];
- for (++i; i < _length; i++) {
- _entries[i-1] = _entries[i];
- }
- _length--;
- return true;
- }
- }
- return false;
-}
-
-void
-SGPropertyNode::hash_table::bucket::clear (SGPropertyNode::hash_table * owner)
-{
- for (int i = 0; i < _length; i++) {
- SGPropertyNode * node = _entries[i]->get_value();
- if (node)
- node->remove_linked_node(owner);
- }
-}
-
-SGPropertyNode::hash_table::hash_table ()
- : _data_length(0),
- _data(0)
-{
-}
-
-SGPropertyNode::hash_table::~hash_table ()
-{
- for (unsigned int i = 0; i < _data_length; i++) {
- if (_data[i]) {
- _data[i]->clear(this);
- delete _data[i];
- }
- }
- delete [] _data;
-}
-
-SGPropertyNode *
-SGPropertyNode::hash_table::get (const char * key)
-{
- if (_data_length == 0)
- return 0;
- unsigned int index = hashcode(key) % _data_length;
- if (_data[index] == 0)
- return 0;
- entry * e = _data[index]->get_entry(key);
- if (e == 0)
- return 0;
- else
- return e->get_value();
-}
-
-void
-SGPropertyNode::hash_table::put (const char * key, SGPropertyNode * value)
-{
- if (_data_length == 0) {
- _data = new bucket*[HASH_TABLE_SIZE];
- _data_length = HASH_TABLE_SIZE;
- for (unsigned int i = 0; i < HASH_TABLE_SIZE; i++)
- _data[i] = 0;
- }
- unsigned int index = hashcode(key) % _data_length;
- if (_data[index] == 0) {
- _data[index] = new bucket;
- }
- entry * e = _data[index]->get_entry(key, true);
- e->set_value(value);
- value->add_linked_node(this);
-}
-
-bool
-SGPropertyNode::hash_table::erase (SGPropertyNode * node)
-{
- for (unsigned int i = 0; i < _data_length; i++)
- if (_data[i] && _data[i]->erase(node))
- return true;
-
- return false;
-}
-
-unsigned int
-SGPropertyNode::hash_table::hashcode (const char * key)
-{
- unsigned int hash = 0;
- while (*key != 0) {
- hash = 31 * hash + *key;
- key++;
- }
- return hash;
-}
-
-
\f
////////////////////////////////////////////////////////////////////////
// Implementation of SGPropertyChangeListener.
_properties.erase(it);
}
-namespace simgear
-{
template<>
std::ostream& SGRawBase<SGVec3d>::printOn(std::ostream& stream) const
{
return stream;
}
+namespace simgear
+{
template<>
std::istream& readFrom<SGVec3d>(std::istream& stream, SGVec3d& result)
{
}
return stream;
}
-
+}
template<>
std::ostream& SGRawBase<SGVec4d>::printOn(std::ostream& stream) const
{
return stream;
}
+namespace simgear
+{
template<>
std::istream& readFrom<SGVec4d>(std::istream& stream, SGVec4d& result)
{
return stream;
}
+namespace
+{
+bool compareNodeValue(const SGPropertyNode& lhs, const SGPropertyNode& rhs)
+{
+ props::Type ltype = lhs.getType();
+ props::Type rtype = rhs.getType();
+ if (ltype != rtype)
+ return false;
+ switch (ltype) {
+ case props::NONE:
+ return true;
+ case props::ALIAS:
+ return false; // XXX Should we look in aliases?
+ case props::BOOL:
+ return lhs.getValue<bool>() == rhs.getValue<bool>();
+ case props::INT:
+ return lhs.getValue<int>() == rhs.getValue<int>();
+ case props::LONG:
+ return lhs.getValue<long>() == rhs.getValue<long>();
+ case props::FLOAT:
+ return lhs.getValue<float>() == rhs.getValue<float>();
+ case props::DOUBLE:
+ return lhs.getValue<double>() == rhs.getValue<double>();
+ case props::STRING:
+ case props::UNSPECIFIED:
+ return !strcmp(lhs.getStringValue(), rhs.getStringValue());
+ case props::VEC3D:
+ return lhs.getValue<SGVec3d>() == rhs.getValue<SGVec3d>();
+ case props::VEC4D:
+ return lhs.getValue<SGVec4d>() == rhs.getValue<SGVec4d>();
+ default:
+ return false;
+ }
+}
+}
+}
+
+bool SGPropertyNode::compare(const SGPropertyNode& lhs,
+ const SGPropertyNode& rhs)
+{
+ if (&lhs == &rhs)
+ return true;
+ int lhsChildren = lhs.nChildren();
+ int rhsChildren = rhs.nChildren();
+ if (lhsChildren != rhsChildren)
+ return false;
+ if (lhsChildren == 0)
+ return compareNodeValue(lhs, rhs);
+ for (size_t i = 0; i < lhs._children.size(); ++i) {
+ const SGPropertyNode* lchild = lhs._children[i];
+ const SGPropertyNode* rchild = rhs._children[i];
+ // I'm guessing that the nodes will usually be in the same
+ // order.
+ if (lchild->getIndex() != rchild->getIndex()
+ || lchild->getNameString() != rchild->getNameString()) {
+ rchild = 0;
+ for (PropertyList::const_iterator itr = rhs._children.begin(),
+ end = rhs._children.end();
+ itr != end;
+ ++itr)
+ if (lchild->getIndex() == (*itr)->getIndex()
+ && lchild->getNameString() == (*itr)->getNameString()) {
+ rchild = *itr;
+ break;
+ }
+ if (!rchild)
+ return false;
+ }
+ if (!compare(*lchild, *rchild))
+ return false;
+ }
+ return true;
+}
+
+struct PropertyPlaceLess {
+ typedef bool result_type;
+ bool operator()(SGPropertyNode_ptr lhs, SGPropertyNode_ptr rhs) const
+ {
+ int comp = lhs->getNameString().compare(rhs->getNameString());
+ if (comp == 0)
+ return lhs->getIndex() < rhs->getIndex();
+ else
+ return comp < 0;
+ }
+};
+
+size_t hash_value(const SGPropertyNode& node)
+{
+ using namespace boost;
+
+ if (node.nChildren() == 0) {
+ switch (node.getType()) {
+ case props::NONE:
+ return 0;
+
+ case props::BOOL:
+ return hash_value(node.getValue<bool>());
+ case props::INT:
+ return hash_value(node.getValue<int>());
+ case props::LONG:
+ return hash_value(node.getValue<long>());
+ case props::FLOAT:
+ return hash_value(node.getValue<float>());
+ case props::DOUBLE:
+ return hash_value(node.getValue<double>());
+ case props::STRING:
+ case props::UNSPECIFIED:
+ {
+ const char *val = node.getStringValue();
+ return hash_range(val, val + strlen(val));
+ }
+ case props::VEC3D:
+ {
+ const SGVec3d val = node.getValue<SGVec3d>();
+ return hash_range(&val[0], &val[3]);
+ }
+ case props::VEC4D:
+ {
+ const SGVec4d val = node.getValue<SGVec4d>();
+ return hash_range(&val[0], &val[4]);
+ }
+ case props::ALIAS: // XXX Should we look in aliases?
+ default:
+ return 0;
+ }
+ } else {
+ size_t seed = 0;
+ PropertyList children(node._children.begin(), node._children.end());
+ sort(children.begin(), children.end(), PropertyPlaceLess());
+ for (PropertyList::const_iterator itr = children.begin(),
+ end = children.end();
+ itr != end;
+ ++itr) {
+ hash_combine(seed, (*itr)->_name);
+ hash_combine(seed, (*itr)->_index);
+ hash_combine(seed, hash_value(**itr));
+ }
+ return seed;
+ }
}
// end of props.cxx
projects / simgear.git / blobdiff