PerCederberg.Grammatica.Runtime
Class NFAEpsilonTransition

System.Object
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   +--NFATransition
         |
         +--NFAEpsilonTransition

internal class NFAEpsilonTransition

extends NFATransition

The special epsilon transition. This transition matches the empty input, i.e. it is an automatic transition that doesn't read any input. As such, it returns false in the match method and is handled specially everywhere.

NFAEpsilonTransition

public NFAEpsilonTransition( NFAState state );

Creates a new epsilon transition.

Parameters:

state - the target state

Copy

public override 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 override 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 override 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