PerCederberg.Grammatica.Runtime
Class NFATransition

System.Object
   |
   +--NFATransition

Direct Known Subclasses:

NFACharRangeTransition, NFACharTransition, NFADigitTransition, NFADotTransition, NFAEpsilonTransition, NFANonDigitTransition, NFANonWhitespaceTransition, NFANonWordTransition, NFAWhitespaceTransition, NFAWordTransition

internal abstract class NFATransition

extends System.Object

An NFA state transition. A transition checks a single character of input an determines if it is a match. If a match is encountered, the NFA should move forward to the transition state.

state

 internal NFAState state;

The target state of the transition.

NFATransition

public NFATransition( NFAState state );

Creates a new state transition.

Parameters:

state - the target state

Copy

public abstract NFATransition Copy( NFAState state );

Creates a copy of this transition but with another target state.

Parameters:

state - the new target state

Returns:

an identical copy of this transition

IsAscii

public abstract bool IsAscii();

Checks if this transition only matches ASCII characters. I.e. characters with numeric values between 0 and 127.

Returns:

true if this transition only matches ASCII, or false otherwise

Match

public abstract bool Match( char ch );

Checks if the specified character matches the transition.

Parameters:

ch - the character to check

Returns:

true if the character matches, or false otherwise