PerCederberg.Grammatica.Runtime
Class StringDFAMatcher

System.Object
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   +--TokenMatcher
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         +--StringDFAMatcher

internal class StringDFAMatcher

extends TokenMatcher

A token pattern matcher using a DFA for string tokens. This class only supports string tokens and must be complemented with another matcher for regular expressions. Internally it uses a DFA to provide high performance.

StringDFAMatcher

public StringDFAMatcher( bool ignoreCase );

Creates a new string token matcher.

Parameters:

ignoreCase - the character case ignore flag

AddPattern

public override void AddPattern( TokenPattern pattern );

Adds a string token pattern to this matcher.

Parameters:

pattern - the pattern to add

Match

public override void Match( ReaderBuffer buffer, TokenMatch match );

Searches for matching token patterns at the start of the input stream. If a match is found, the token match object is updated.

Parameters:

buffer - the input buffer to check

match - the token match to update

Throws:

IOException - if an I/O error occurred