Package org.antlr.runtime


package org.antlr.runtime
  • Class
    Description
    This is a char buffer stream that is loaded from a file all at once when you construct the object.
    A kind of ReaderStream that pulls from an InputStream.
    Vacuum all input from a Reader and then treat it like a StringStream.
    A pretty quick CharStream that pulls all data from an array directly.
    A generic recognizer that can handle recognizers generated from lexer, parser, and tree grammars.
    A stripped-down version of org.antlr.misc.BitSet that is just good enough to handle runtime requirements such as FOLLOW sets for automatic error recovery.
    Buffer all input tokens but do on-demand fetching of new tokens from lexer.
    A source of characters for an ANTLR lexer
    When walking ahead with cyclic DFA or for syntactic predicates, we need to record the state of the input stream (char index, line, etc...) so that we can rewind the state after scanning ahead.
    A Token object like we'd use in ANTLR 2.x; has an actual string created and associated with this object.
     
    The most common stream of tokens where every token is buffered up and tokens are filtered for a certain channel (the parser will only see these tokens).
    A DFA implemented as a set of transition tables.
    The recognizer did not match anything for a (..)+ loop.
    A semantic predicate failed during validation.
    A simple stream of integers used when all I care about is the char or token type sequence (such as interpretation).
    The most common stream of tokens is one where every token is buffered up and tokens are prefiltered for a certain channel (the parser will only see these tokens and cannot change the filter channel number during the parse).
    A lexer is recognizer that draws input symbols from a character stream.
     
     
     
    A mismatched char or Token or tree node
     
    We were expecting a token but it's not found.
     
    A parser for TokenStreams.
    Rules that return more than a single value must return an object containing all the values.
    The root of the ANTLR exception hierarchy.
    The set of fields needed by an abstract recognizer to recognize input and recover from errors etc...
    Rules can return start/stop info as well as possible trees and templates
     
     
    Useful for dumping out the input stream after doing some augmentation or other manipulations.
    A source of tokens must provide a sequence of tokens via nextToken() and also must reveal it's source of characters; CommonToken's text is computed from a CharStream; it only store indices into the char stream.
    A stream of tokens accessing tokens from a TokenSource
    A token stream that pulls tokens from the code source on-demand and without tracking a complete buffer of the tokens.
    An extra token while parsing a TokenStream