/**
* vim: set ts=4 sw=4 tw=99 noet :
* =============================================================================
* SourceMod (C)2004-2014 AlliedModders LLC. All rights reserved.
* =============================================================================
*
* This file is part of the SourceMod/SourcePawn SDK.
*
* This program is free software; you can redistribute it and/or modify it under
* the terms of the GNU General Public License, version 3.0, as published by the
* Free Software Foundation.
*
* This program is distributed in the hope that it will be useful, but WITHOUT
* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
* FOR A PARTICULAR PURPOSE. See the GNU General Public License for more
* details.
*
* You should have received a copy of the GNU General Public License along with
* this program. If not, see .
*
* As a special exception, AlliedModders LLC gives you permission to link the
* code of this program (as well as its derivative works) to "Half-Life 2," the
* "Source Engine," the "SourcePawn JIT," and any Game MODs that run on software
* by the Valve Corporation. You must obey the GNU General Public License in
* all respects for all other code used. Additionally, AlliedModders LLC grants
* this exception to all derivative works. AlliedModders LLC defines further
* exceptions, found in LICENSE.txt (as of this writing, version JULY-31-2007),
* or .
*
* Version: $Id$
*/
#if defined _adt_trie_included
#endinput
#endif
#define _adt_trie_included
/* Object-oriented wrapper for maps. */
methodmap StringMap < Handle
{
// Creates a hash map. A hash map is a container that can map strings (called
// "keys") to arbitrary values (cells, arrays, or strings). Keys in a hash map
// are unique. That is, there is at most one entry in the map for a given key.
//
// Insertion, deletion, and lookup in a hash map are all considered to be fast
// operations, amortized to O(1), or constant time.
//
// The word "Trie" in this API is historical. As of SourceMod 1.6, tries have
// been internally replaced with hash tables, which have O(1) insertion time
// instead of O(n).
//
// The StringMap must be freed via delete or CloseHandle().
public native StringMap();
// Sets a value in a hash map, either inserting a new entry or replacing an old one.
//
// @param key Key string.
// @param value Value to store at this key.
// @param replace If false, operation will fail if the key is already set.
// @return True on success, false on failure.
public native bool SetValue(const char[] key, any value, bool replace=true);
// Sets an array value in a Map, either inserting a new entry or replacing an old one.
//
// @param key Key string.
// @param array Array to store.
// @param num_items Number of items in the array.
// @param replace If false, operation will fail if the key is already set.
// @return True on success, false on failure.
public native bool SetArray(const char[] key, const any[] array, int num_items, bool replace=true);
// Sets a string value in a Map, either inserting a new entry or replacing an old one.
//
// @param key Key string.
// @param value String to store.
// @param replace If false, operation will fail if the key is already set.
// @return True on success, false on failure.
public native bool SetString(const char[] key, const char[] value, bool replace=true);
// Retrieves a value in a Map.
//
// @param key Key string.
// @param value Variable to store value.
// @return True on success. False if the key is not set, or the key is set
// as an array or string (not a value).
public native bool GetValue(const char[] key, any &value);
// Retrieves an array in a Map.
//
// @param map Map Handle.
// @param key Key string.
// @param array Buffer to store array.
// @param max_size Maximum size of array buffer.
// @param size Optional parameter to store the number of elements written to the buffer.
// @return True on success. False if the key is not set, or the key is set
// as a value or string (not an array).
public native bool GetArray(const char[] key, any[] array, int max_size, int &size=0);
// Retrieves a string in a Map.
//
// @param key Key string.
// @param value Buffer to store value.
// @param max_size Maximum size of string buffer.
// @param size Optional parameter to store the number of bytes written to the buffer.
// @return True on success. False if the key is not set, or the key is set
// as a value or array (not a string).
public native bool GetString(const char[] key, char[] value, int max_size, int &size=0);
// Removes a key entry from a Map.
//
// @param key Key string.
// @return True on success, false if the value was never set.
public native bool Remove(const char[] key);
// Clears all entries from a Map.
public native void Clear();
// Create a snapshot of the map's keys. See StringMapSnapshot.
public native StringMapSnapshot Snapshot();
// Retrieves the number of elements in a map.
property int Size {
public native get();
}
};
// A StringMapSnapshot is created via StringMap.Snapshot(). It captures the
// keys on a map so they can be read. Snapshots must be freed with delete or
// CloseHandle().
methodmap StringMapSnapshot < Handle
{
// Returns the number of keys in the map snapshot.
property int Length {
public native get();
}
// Returns the buffer size required to store a given key. That is, it
// returns the length of the key plus one.
//
// @param index Key index (starting from 0).
// @return Buffer size required to store the key string.
// @error Index out of range.
public native int KeyBufferSize(int index);
// Retrieves the key string of a given key in a map snapshot.
//
// @param index Key index (starting from 0).
// @param buffer String buffer.
// @param maxlength Maximum buffer length.
// @return Number of bytes written to the buffer.
// @error Index out of range.
public native int GetKey(int index, char[] buffer, int maxlength);
};
/**
* Creates a hash map. A hash map is a container that can map strings (called
* "keys") to arbitrary values (cells, arrays, or strings). Keys in a hash map
* are unique. That is, there is at most one entry in the map for a given key.
*
* Insertion, deletion, and lookup in a hash map are all considered to be fast
* operations, amortized to O(1), or constant time.
*
* The word "Trie" in this API is historical. As of SourceMod 1.6, tries have
* been internally replaced with hash tables, which have O(1) insertion time
* instead of O(n).
*
* @return New Map Handle, which must be freed via CloseHandle().
*/
native StringMap:CreateTrie();
/**
* Sets a value in a hash map, either inserting a new entry or replacing an old one.
*
* @param map Map Handle.
* @param key Key string.
* @param value Value to store at this key.
* @param replace If false, operation will fail if the key is already set.
* @return True on success, false on failure.
* @error Invalid Handle.
*/
native bool SetTrieValue(Handle map, const char[] key, any value, bool replace=true);
/**
* Sets an array value in a Map, either inserting a new entry or replacing an old one.
*
* @param map Map Handle.
* @param key Key string.
* @param array Array to store.
* @param num_items Number of items in the array.
* @param replace If false, operation will fail if the key is already set.
* @return True on success, false on failure.
* @error Invalid Handle.
*/
native bool SetTrieArray(Handle map, const char[] key, const any[] array, int num_items, bool replace=true);
/**
* Sets a string value in a Map, either inserting a new entry or replacing an old one.
*
* @param map Map Handle.
* @param key Key string.
* @param value String to store.
* @param replace If false, operation will fail if the key is already set.
* @return True on success, false on failure.
* @error Invalid Handle.
*/
native bool SetTrieString(Handle map, const char[] key, const char[] value, bool replace=true);
/**
* Retrieves a value in a Map.
*
* @param map Map Handle.
* @param key Key string.
* @param value Variable to store value.
* @return True on success. False if the key is not set, or the key is set
* as an array or string (not a value).
* @error Invalid Handle.
*/
native bool GetTrieValue(Handle map, const char[] key, any &value);
/**
* Retrieves an array in a Map.
*
* @param map Map Handle.
* @param key Key string.
* @param array Buffer to store array.
* @param max_size Maximum size of array buffer.
* @param size Optional parameter to store the number of elements written to the buffer.
* @return True on success. False if the key is not set, or the key is set
* as a value or string (not an array).
* @error Invalid Handle.
*/
native bool GetTrieArray(Handle map, const char[] key, any[] array, int max_size, int &size=0);
/**
* Retrieves a string in a Map.
*
* @param map Map Handle.
* @param key Key string.
* @param value Buffer to store value.
* @param max_size Maximum size of string buffer.
* @param size Optional parameter to store the number of bytes written to the buffer.
* @return True on success. False if the key is not set, or the key is set
* as a value or array (not a string).
* @error Invalid Handle.
*/
native bool GetTrieString(Handle map, const char[] key, char[] value, int max_size, int &size=0);
/**
* Removes a key entry from a Map.
*
* @param map Map Handle.
* @param key Key string.
* @return True on success, false if the value was never set.
* @error Invalid Handle.
*/
native RemoveFromTrie(Handle map, const char[] key);
/**
* Clears all entries from a Map.
*
* @param map Map Handle.
* @error Invalid Handle.
*/
native ClearTrie(Handle map);
/**
* Retrieves the number of elements in a map.
*
* @param map Map Handle.
* @return Number of elements in the trie.
* @error Invalid Handle.
*/
native GetTrieSize(Handle map);
/**
* Creates a snapshot of all keys in the map. If the map is changed after this
* call, the changes are not reflected in the snapshot. Keys are not sorted.
*
* @param map Map Handle.
* @return New Map Snapshot Handle, which must be closed via CloseHandle().
* @error Invalid Handle.
*/
native Handle CreateTrieSnapshot(Handle map);
/**
* Returns the number of keys in a map snapshot. Note that this may be
* different from the size of the map, since the map can change after the
* snapshot of its keys was taken.
*
* @param snapshot Map snapshot.
* @return Number of keys.
* @error Invalid Handle.
*/
native TrieSnapshotLength(Handle snapshot);
/**
* Returns the buffer size required to store a given key. That is, it returns
* the length of the key plus one.
*
* @param snapshot Map snapshot.
* @param index Key index (starting from 0).
* @return Buffer size required to store the key string.
* @error Invalid Handle or index out of range.
*/
native TrieSnapshotKeyBufferSize(Handle snapshot, int index);
/**
* Retrieves the key string of a given key in a map snapshot.
*
* @param snapshot Map snapshot.
* @param index Key index (starting from 0).
* @param buffer String buffer.
* @param maxlength Maximum buffer length.
* @return Number of bytes written to the buffer.
* @error Invalid Handle or index out of range.
*/
native GetTrieSnapshotKey(Handle snapshot, int index, char[] buffer, int maxlength);