Class ACommandLineFlag

Unit

linearc

Declaration

type ACommandLineFlag = class(ACommandLineOption)

Description

This class represents a command-line flag; that is, an option with a value that is only true if the user specifies the name of the option on the command line.

Flag values accept no parameters; merely their presence on the command line is enough to trigger them. The most common flag value is, of course, --help, the presence of which indicates that the user wants more information on the various options available for invoking the program.

Hierarchy

• TObject
• AnObject
• APrintingObject
• ANode
• ABinaryLeaf
• AStringLeaf
• AMappingEntry
• ADictionaryEntry
• ACommandLineOption
• ACommandLineFlag

Overview

Methods

	function init: boolean; override;
	function setValue(const newValue: Variant; const makeDirty: boolean = true): Variant; override;

Description

Methods

	function init: boolean; override;
Initializer

	function setValue(const newValue: Variant; const makeDirty: boolean = true): Variant; override;
Set the value of the option. This method overrides the behavior inherited from ACommandLineOption.setValue; it attempts to cast newValue to a boolean value, since flags may only represent conditions that are True or False. Returns The previous value of ACommandLineFlag.value. Exceptions raised AnOptionValueError in the event that the attempt to cast newValue to a boolean value fails.