mirror of
https://port.numenaute.org/aleajactaest/khanat-code-old.git
synced 2024-11-11 01:40:00 +00:00
303 lines
11 KiB
C++
303 lines
11 KiB
C++
// Ryzom - MMORPG Framework <http://dev.ryzom.com/projects/ryzom/>
|
|
// Copyright (C) 2010 Winch Gate Property Limited
|
|
//
|
|
// This program is free software: you can redistribute it and/or modify
|
|
// it under the terms of the GNU Affero General Public License as
|
|
// published by the Free Software Foundation, either version 3 of the
|
|
// License, or (at your option) any later version.
|
|
//
|
|
// 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 Affero General Public License for more details.
|
|
//
|
|
// You should have received a copy of the GNU Affero General Public License
|
|
// along with this program. If not, see <http://www.gnu.org/licenses/>.
|
|
|
|
#ifndef RZ_LUA_OBJECT
|
|
#define RZ_LUA_OBJECT
|
|
|
|
|
|
#include "nel/misc/smart_ptr.h"
|
|
#include "nel/misc/rgba.h"
|
|
#include "nel/gui/lua_helper.h"
|
|
|
|
namespace NLGUI
|
|
{
|
|
|
|
class CLuaEnumeration;
|
|
|
|
/**
|
|
* Wrapper to a lua value
|
|
*
|
|
* Useful to navigate through lua tables without having to deal with the stack.
|
|
*
|
|
* The following types are tracked by reference :
|
|
* - lua table
|
|
* - lua user data
|
|
* - lua functions
|
|
*
|
|
* The following types are kept by value :
|
|
*
|
|
* - lua numbers
|
|
* - lua strings ?
|
|
* - lua boolean
|
|
* - lua light user datas
|
|
* - lua 'pointers'
|
|
*
|
|
* Each reference object has an id giving its path in order to track bugs more easily
|
|
*/
|
|
class CLuaObject
|
|
{
|
|
public:
|
|
CLuaObject() {}
|
|
~CLuaObject();
|
|
// Build this object by popping it from the given lua state
|
|
CLuaObject(CLuaState &state, const char *id ="");
|
|
CLuaObject(CLuaState &state, const std::string &id);
|
|
// Build this object from another object
|
|
CLuaObject(const CLuaObject &other);
|
|
// Copy refrence to another lua object
|
|
CLuaObject &operator=(const CLuaObject &other);
|
|
// Get id for that object
|
|
const std::string &getId() const { return _Id; }
|
|
// Set id for that object
|
|
void setId(const std::string &id) { _Id = id; }
|
|
// See if the obj
|
|
bool isValid() const;
|
|
// Pop a new value for this lua object from the top of the stack. The stack must not be empty
|
|
void pop(CLuaState &luaState, const char *id ="");
|
|
// Push the object that is being referenced on the stack
|
|
// An assertion is raised if 'pop' hasn't been called or
|
|
// if the lua state has been destroyed
|
|
void push() const;
|
|
// Get the lua state in which the object resides.
|
|
CLuaState *getLuaState() const;
|
|
// Release the object. 'pop' must be called to make the object valid again
|
|
void release();
|
|
// type queries
|
|
int type() const;
|
|
const char *getTypename() const;
|
|
bool isNil() const;
|
|
bool isNumber() const;
|
|
bool isBoolean() const;
|
|
bool isString() const;
|
|
bool isFunction() const;
|
|
bool isCFunction() const;
|
|
bool isTable() const;
|
|
bool isUserData() const;
|
|
bool isLightUserData() const;
|
|
bool isRGBA() const;
|
|
// equality
|
|
bool rawEqual(const CLuaObject &other) const;
|
|
// conversions (no throw) : the actual value of object is not modified!!
|
|
NLMISC::CRGBA toRGBA() const; // default to black if not a crgba
|
|
bool toBoolean() const;
|
|
lua_Number toNumber() const;
|
|
std::string toString() const;
|
|
lua_CFunction toCFunction() const;
|
|
void *toUserData() const;
|
|
const void *toPointer() const;
|
|
// implicit conversions (no throw)
|
|
operator bool() const;
|
|
operator float() const;
|
|
operator double() const;
|
|
operator std::string() const;
|
|
/** create a sub table for this object, with a string as a key
|
|
* This object must be a table or an exception if thrown
|
|
*/
|
|
CLuaObject newTable(const char *tableName) throw(ELuaNotATable);
|
|
|
|
|
|
/** Set a value in a table.
|
|
* If this object is not a table then an exception is thrown
|
|
* NB : value should came from the same lua environment
|
|
* \TODO other type of keys
|
|
*/
|
|
void setValue(const char *key, const CLuaObject &value) throw(ELuaNotATable);
|
|
void setValue(const std::string &key, const CLuaObject &value) throw(ELuaNotATable) { setValue(key.c_str(), value); }
|
|
void setValue(const char *key, const std::string &value) throw(ELuaNotATable);
|
|
void setValue(const char *key, const char *value) throw(ELuaNotATable);
|
|
void setValue(const char *key, bool value) throw(ELuaNotATable);
|
|
void setValue(const char *key, TLuaWrappedFunction value) throw(ELuaNotATable);
|
|
void setValue(const char *key, double value) throw(ELuaNotATable);
|
|
void setValue(const std::string &key, const std::string &value) throw(ELuaNotATable) { setValue(key.c_str(), value); }
|
|
void setNil(const char *key) throw(ELuaNotATable);
|
|
void setNil(const std::string &key) throw(ELuaNotATable) { setNil(key.c_str()); }
|
|
/** Erase a value in a table by its key.
|
|
* If this object is not a table then an exception is thrown.
|
|
* \TODO other type of keys
|
|
*/
|
|
void eraseValue(const char *key) throw(ELuaNotATable);
|
|
void eraseValue(const std::string &key) throw(ELuaNotATable) { eraseValue(key.c_str()); }
|
|
// test is this object is enumerable
|
|
bool isEnumerable() const;
|
|
// Enumeration of a table. If the object is not a table, an exception is thrown.
|
|
CLuaEnumeration enumerate() throw(ELuaNotATable);
|
|
// retrieve metatable of an object (or nil if object has no metatable)
|
|
CLuaObject getMetaTable() const;
|
|
// set metatable for this object
|
|
bool setMetaTable(CLuaObject &metatable);
|
|
/** Access to a sub element of a table (no throw).
|
|
* if the element is not a table, then 'nil' is returned
|
|
* TODO nico : add other key types if needed
|
|
* TODO nico : version that takes destination object as a reference in its parameter to avoid an object copy
|
|
*/
|
|
CLuaObject operator[](double key) const;
|
|
CLuaObject operator[](const char *key) const;
|
|
CLuaObject operator[](const std::string &key) const { return operator[](key.c_str()); }
|
|
/** Checked access to a sub element of a table. An exception is thrown is the element is not a table.
|
|
*/
|
|
CLuaObject at(const char *key) const throw (ELuaNotATable);
|
|
CLuaObject at(const std::string &key) const { return at(key.c_str()); }
|
|
|
|
// Test is that table has the given key. The object must be a table or an exception is thrown
|
|
bool hasKey(const char *key) const;
|
|
|
|
/** debug : recursively get value (useful for table)
|
|
* \param maxDepth (0 for no limit)
|
|
* \param alreadySeen pointer to lua tables that have already been displayed by the command (to avoid infinite recursion when a cycluic graph is encountered)
|
|
*/
|
|
std::string toStringRecurse(uint depth = 0, uint maxDepth = 20, std::set<const void *> *alreadySeen = NULL) const;
|
|
|
|
/** dump the value in the log (includes tables)
|
|
* \param alreadySeen pointer to lua tables that have already been displayed by the command (to avoid infinite recursion when a cycluic graph is encountered)
|
|
*/
|
|
void dump(uint maxDepth = 20, std::set<const void *> *alreadySeen = NULL) const;
|
|
// concatenate identifiers, adding a dot between them if necessary. If right is a number then brackets are added
|
|
static std::string concatId(const std::string &left, const std::string &right);
|
|
// If this object is a function, then call it and return true on success
|
|
bool callNoThrow(int numArgs, int numRet);
|
|
// Call a method of this table by name (no throw version)
|
|
bool callMethodByNameNoThrow(const char *name, int numArgs, int numRet);
|
|
private:
|
|
NLMISC::CRefPtr<CLuaState> _LuaState;
|
|
std::string _Id;
|
|
};
|
|
|
|
|
|
/** enumeration of the content of a lua table
|
|
*
|
|
* Example of use :
|
|
*
|
|
*\code
|
|
CLuaObject table;
|
|
table.pop(luaState); // retrieve table from the top of a lua stack
|
|
CLuaEnumeration enueration = table.enumerate();
|
|
while (enumeration.hasNext())
|
|
{
|
|
nlinfo('key = %s", enumeration.nextKey().toString().c_str());
|
|
nlinfo('value = %s", enumeration.nextValue().toString().c_str());
|
|
enumeration.next();
|
|
};
|
|
\endcode
|
|
*
|
|
* There is a macro called 'ENUM_LUA_TABLE' to automate that process.
|
|
* Previous code would then be written as follow :
|
|
*
|
|
*
|
|
*\code
|
|
CLuaObject table;
|
|
table.pop(luaState); // retrieve table from the top of a lua stack
|
|
ENUM_LUA_TABLE(table, enumeration);
|
|
{
|
|
nlinfo('key = %s", enumeration.nextKey().toString().c_str());
|
|
nlinfo('value = %s", enumeration.nextValue().toString().c_str());
|
|
};
|
|
\endcode
|
|
*
|
|
*/
|
|
class CLuaEnumeration
|
|
{
|
|
public:
|
|
// is there a next key,value pair in the table
|
|
bool hasNext() { return _HasNext; }
|
|
// Return next key. Assertion if 'hasNext' is false
|
|
const CLuaObject &nextKey() const;
|
|
// Return next value. Assertion if 'hasNext' is false
|
|
CLuaObject &nextValue();
|
|
// Go to the next value. Assertion if there's no such value
|
|
void next();
|
|
private:
|
|
friend class CLuaObject;
|
|
// current value & key
|
|
CLuaObject _Table;
|
|
CLuaObject _Key;
|
|
CLuaObject _Value;
|
|
CLuaObject _NextFunction; // pointer to the global 'next' function
|
|
bool _HasNext;
|
|
// construction from a table on the stack
|
|
CLuaEnumeration(CLuaObject &table);
|
|
};
|
|
|
|
|
|
|
|
|
|
/** macro to ease lua table enumeration
|
|
* \param object A CLuaObject which must be a table, and on which enumeration is done. An exception will be thrown as 'CLuaObject::enumerate' is
|
|
* called if this is not the case
|
|
* \param enumerator The enumerator object
|
|
*/
|
|
#define ENUM_LUA_TABLE(object, enumerator) for(CLuaEnumeration enumerator = (object).enumerate(); enumerator.hasNext(); enumerator.next())
|
|
|
|
|
|
//opitmized lua string for fast comparison
|
|
class CLuaString
|
|
{
|
|
public:
|
|
explicit CLuaString(const char *value = "")
|
|
{
|
|
nlassert( value != NULL );
|
|
_Str = value;
|
|
}
|
|
const std::string& getStr() const{ return _Str; }
|
|
private:
|
|
std::string _Str;
|
|
mutable CLuaState::TRefPtr _LuaState; // ref ptr so that statics get rebuilt on lua restart
|
|
mutable CLuaObject _InLua;
|
|
};
|
|
|
|
inline bool operator==(const char* lh, const CLuaString& rh)
|
|
{
|
|
return std::string(lh) == rh.getStr();
|
|
}
|
|
|
|
inline bool operator==( const CLuaString& lh, const CLuaString& rh)
|
|
{
|
|
return lh.getStr() == rh.getStr();
|
|
}
|
|
|
|
inline bool operator==(const CLuaString& lh, const char* rh)
|
|
{
|
|
return std::string(rh) == lh.getStr();
|
|
}
|
|
|
|
inline bool operator==( const CLuaString& lh, const std::string& rh)
|
|
{
|
|
return lh.getStr() == rh;
|
|
}
|
|
|
|
inline bool operator==(const std::string& lh, const CLuaString& rh)
|
|
{
|
|
return lh == rh.getStr();
|
|
}
|
|
|
|
class CLuaHashMapTraits
|
|
{
|
|
public:
|
|
static const size_t bucket_size = 4;
|
|
static const size_t min_buckets = 8;
|
|
CLuaHashMapTraits()
|
|
{}
|
|
|
|
// hasher for lua string -> they are unique pointers for each string, so just hash a pointer instead of a string...
|
|
size_t operator()(const char *value) const { return ((size_t) value) >> 3; }
|
|
|
|
// equality for lua string for hash_map -> they are unique pointer -> compare pointers instead of string content
|
|
bool operator()(const char *lhs, const char *rhs) const { return lhs < rhs; }
|
|
};
|
|
|
|
|
|
}
|
|
|
|
#endif
|