mirror of
https://github.com/wpilibsuite/allwpilib
synced 2026-06-20 00:51:42 +00:00
90959defd9
This enables listeners to be notified of not only value updates, but also flag changes and deletions by using a bitmask to specify what notifications are desired. The old API (which only provided a new/not new) flag is still supported. This also subsumes the feature to listen to local changes (that's one of the bitmask options).
270 lines
8.0 KiB
C++
270 lines
8.0 KiB
C++
/*
|
|
* ITable.h
|
|
*
|
|
* Created on: Sep 19, 2012
|
|
* Author: Mitchell Wills
|
|
*/
|
|
|
|
#ifndef ITABLE_H_
|
|
#define ITABLE_H_
|
|
|
|
#include <memory>
|
|
|
|
#include "llvm/StringRef.h"
|
|
#include "nt_Value.h"
|
|
|
|
class ITableListener;
|
|
|
|
class ITable {
|
|
public:
|
|
/**
|
|
* Determines whether the given key is in this table.
|
|
*
|
|
* @param key the key to search for
|
|
* @return true if the table as a value assigned to the given key
|
|
*/
|
|
virtual bool ContainsKey(llvm::StringRef key) const = 0;
|
|
|
|
/**
|
|
* Determines whether there exists a non-empty subtable for this key
|
|
* in this table.
|
|
*
|
|
* @param key the key to search for
|
|
* @return true if there is a subtable with the key which contains at least
|
|
* one key/subtable of its own
|
|
*/
|
|
virtual bool ContainsSubTable(llvm::StringRef key) const = 0;
|
|
|
|
/**
|
|
* Gets the subtable in this table for the given name.
|
|
*
|
|
* @param key the name of the table relative to this one
|
|
* @return a sub table relative to this one
|
|
*/
|
|
virtual std::shared_ptr<ITable> GetSubTable(llvm::StringRef key) const = 0;
|
|
|
|
/**
|
|
* @param types bitmask of types; 0 is treated as a "don't care".
|
|
* @return keys currently in the table
|
|
*/
|
|
virtual std::vector<std::string> GetKeys(int types = 0) const = 0;
|
|
|
|
/**
|
|
* @return subtables currently in the table
|
|
*/
|
|
virtual std::vector<std::string> GetSubTables() const = 0;
|
|
|
|
/**
|
|
* Makes a key's value persistent through program restarts.
|
|
*
|
|
* @param key the key to make persistent
|
|
*/
|
|
virtual void SetPersistent(llvm::StringRef key) = 0;
|
|
|
|
/**
|
|
* Stop making a key's value persistent through program restarts.
|
|
* The key cannot be null.
|
|
*
|
|
* @param key the key name
|
|
*/
|
|
virtual void ClearPersistent(llvm::StringRef key) = 0;
|
|
|
|
/**
|
|
* Returns whether the value is persistent through program restarts.
|
|
* The key cannot be null.
|
|
*
|
|
* @param key the key name
|
|
*/
|
|
virtual bool IsPersistent(llvm::StringRef key) = 0;
|
|
|
|
/**
|
|
* Sets flags on the specified key in this table. The key can
|
|
* not be null.
|
|
*
|
|
* @param key the key name
|
|
* @param flags the flags to set (bitmask)
|
|
*/
|
|
virtual void SetFlags(llvm::StringRef key, unsigned int flags) = 0;
|
|
|
|
/**
|
|
* Clears flags on the specified key in this table. The key can
|
|
* not be null.
|
|
*
|
|
* @param key the key name
|
|
* @param flags the flags to clear (bitmask)
|
|
*/
|
|
virtual void ClearFlags(llvm::StringRef key, unsigned int flags) = 0;
|
|
|
|
/**
|
|
* Returns the flags for the specified key.
|
|
*
|
|
* @param key
|
|
* the key name
|
|
* @return the flags, or 0 if the key is not defined
|
|
*/
|
|
virtual unsigned int GetFlags(llvm::StringRef key) = 0;
|
|
|
|
/**
|
|
* Deletes the specified key in this table. The key can
|
|
* not be null.
|
|
*
|
|
* @param key the key name
|
|
*/
|
|
virtual void Delete(llvm::StringRef key) = 0;
|
|
|
|
/**
|
|
* Gets the value associated with a key as an object
|
|
*
|
|
* @param key the key of the value to look up
|
|
* @return the value associated with the given key
|
|
* @throws TableKeyNotDefinedException if there is no value associated with
|
|
* the given key
|
|
*/
|
|
virtual std::shared_ptr<nt::Value> GetValue(llvm::StringRef key) const = 0;
|
|
|
|
/**
|
|
* Put a value in the table
|
|
*
|
|
* @param key the key to be assigned to
|
|
* @param value the value that will be assigned
|
|
* @return False if the table key already exists with a different type
|
|
* @throws IllegalArgumentException when the value is not supported by the
|
|
* table
|
|
*/
|
|
virtual bool PutValue(llvm::StringRef key,
|
|
std::shared_ptr<nt::Value> value) = 0;
|
|
|
|
/**
|
|
* Put a number in the table
|
|
*
|
|
* @param key the key to be assigned to
|
|
* @param value the value that will be assigned
|
|
* @return False if the table key already exists with a different type
|
|
*/
|
|
virtual bool PutNumber(llvm::StringRef key, double value) = 0;
|
|
|
|
/**
|
|
* Gets the number associated with the given name.
|
|
*
|
|
* @param key the key to look up
|
|
* @param defaultValue the value to be returned if no value is found
|
|
* @return the value associated with the given key or the given default value
|
|
* if there is no value associated with the key
|
|
*/
|
|
virtual double GetNumber(llvm::StringRef key, double defaultValue) const = 0;
|
|
|
|
/**
|
|
* Put a string in the table
|
|
*
|
|
* @param key the key to be assigned to
|
|
* @param value the value that will be assigned
|
|
* @return False if the table key already exists with a different type
|
|
*/
|
|
virtual bool PutString(llvm::StringRef key, llvm::StringRef value) = 0;
|
|
|
|
/**
|
|
* Gets the string associated with the given name.
|
|
*
|
|
* @param key the key to look up
|
|
* @param defaultValue the value to be returned if no value is found
|
|
* @return the value associated with the given key or the given default value
|
|
* if there is no value associated with the key
|
|
*/
|
|
virtual std::string GetString(llvm::StringRef key,
|
|
llvm::StringRef defaultValue) const = 0;
|
|
|
|
/**
|
|
* Put a boolean in the table
|
|
*
|
|
* @param key the key to be assigned to
|
|
* @param value the value that will be assigned
|
|
* @return False if the table key already exists with a different type
|
|
*/
|
|
virtual bool PutBoolean(llvm::StringRef key, bool value) = 0;
|
|
|
|
/**
|
|
* Gets the boolean associated with the given name.
|
|
*
|
|
* @param key the key to look up
|
|
* @param defaultValue the value to be returned if no value is found
|
|
* @return the value associated with the given key or the given default value
|
|
* if there is no value associated with the key
|
|
*/
|
|
virtual bool GetBoolean(llvm::StringRef key, bool defaultValue) const = 0;
|
|
|
|
/**
|
|
* Add a listener for changes to the table
|
|
*
|
|
* @param listener the listener to add
|
|
*/
|
|
virtual void AddTableListener(ITableListener* listener) = 0;
|
|
|
|
/**
|
|
* Add a listener for changes to the table
|
|
*
|
|
* @param listener the listener to add
|
|
* @param immediateNotify if true then this listener will be notified of all
|
|
* current entries (marked as new)
|
|
*/
|
|
virtual void AddTableListener(ITableListener* listener,
|
|
bool immediateNotify) = 0;
|
|
|
|
/**
|
|
* Add a listener for changes to the table
|
|
*
|
|
* @param listener the listener to add
|
|
* @param immediateNotify if true then this listener will be notified of all
|
|
* current entries (marked as new)
|
|
* @param flags bitmask of NT_NotifyKind specifying desired notifications
|
|
*/
|
|
virtual void AddTableListenerEx(ITableListener* listener,
|
|
unsigned int flags) = 0;
|
|
|
|
/**
|
|
* Add a listener for changes to a specific key the table
|
|
*
|
|
* @param key the key to listen for
|
|
* @param listener the listener to add
|
|
* @param immediateNotify if true then this listener will be notified of all
|
|
* current entries (marked as new)
|
|
*/
|
|
virtual void AddTableListener(llvm::StringRef key, ITableListener* listener,
|
|
bool immediateNotify) = 0;
|
|
|
|
/**
|
|
* Add a listener for changes to a specific key the table
|
|
*
|
|
* @param key the key to listen for
|
|
* @param listener the listener to add
|
|
* @param immediateNotify if true then this listener will be notified of all
|
|
* current entries (marked as new)
|
|
* @param flags bitmask of NT_NotifyKind specifying desired notifications
|
|
*/
|
|
virtual void AddTableListenerEx(llvm::StringRef key, ITableListener* listener,
|
|
unsigned int flags) = 0;
|
|
|
|
/**
|
|
* This will immediately notify the listener of all current sub tables
|
|
* @param listener the listener to add
|
|
*/
|
|
virtual void AddSubTableListener(ITableListener* listener) = 0;
|
|
|
|
/**
|
|
* This will immediately notify the listener of all current sub tables
|
|
* @param listener the listener to add
|
|
* @param localNotify if true then this listener will be notified of all
|
|
* local changes in addition to all remote changes
|
|
*/
|
|
virtual void AddSubTableListener(ITableListener* listener,
|
|
bool localNotify) = 0;
|
|
|
|
/**
|
|
* Remove a listener from receiving table events
|
|
*
|
|
* @param listener the listener to be removed
|
|
*/
|
|
virtual void RemoveTableListener(ITableListener* listener) = 0;
|
|
};
|
|
|
|
#endif /* ITABLE_H_ */
|