Coverage Report

##### Coverage Report - org.webmacro.parser.CharStream

Classes in this File | Line Coverage | Branch Coverage | Complexity
CharStream |
N/A | N/A
N/A | N/A
| 1.0;1

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     /* Generated By:JavaCC: Do not edit this line. CharStream.java Version 4.1 */
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     /* JavaCCOptions:STATIC=false */
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     package org.webmacro.parser;
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     /**
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      * This interface describes a character stream that maintains line and
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      * column number positions of the characters.  It also has the capability
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      * to backup the stream to some extent.  An implementation of this
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      * interface is used in the TokenManager implementation generated by
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      * JavaCCParser.
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      *
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      * All the methods except backup can be implemented in any fashion. backup
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      * needs to be implemented correctly for the correct operation of the lexer.
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      * Rest of the methods are all used to get information like line number,
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      * column number and the String that constitutes a token and are not used
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      * by the lexer. Hence their implementation won't affect the generated lexer's
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      * operation.
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      */
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     public interface CharStream {
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       /**
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        * Returns the next character from the selected input.  The method
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        * of selecting the input is the responsibility of the class
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        * implementing this interface.  Can throw any java.io.IOException.
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        */
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       char readChar() throws java.io.IOException;
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       /**
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        * Returns the column position of the character last read.
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        * @deprecated
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        * @see #getEndColumn
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        */
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       int getColumn();
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       /**
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        * Returns the line number of the character last read.
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        * @deprecated
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        * @see #getEndLine
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        */
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       int getLine();
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       /**
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        * Returns the column number of the last character for current token (being
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        * matched after the last call to BeginTOken).
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        */
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       int getEndColumn();
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       /**
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        * Returns the line number of the last character for current token (being
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        * matched after the last call to BeginTOken).
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        */
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       int getEndLine();
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       /**
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        * Returns the column number of the first character for current token (being
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        * matched after the last call to BeginTOken).
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        */
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       int getBeginColumn();
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       /**
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        * Returns the line number of the first character for current token (being
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        * matched after the last call to BeginTOken).
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        */
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       int getBeginLine();
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       /**
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        * Backs up the input stream by amount steps. Lexer calls this method if it
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        * had already read some characters, but could not use them to match a
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        * (longer) token. So, they will be used again as the prefix of the next
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        * token and it is the implemetation's responsibility to do this right.
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        */
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       void backup(int amount);
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       /**
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        * Returns the next character that marks the beginning of the next token.
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        * All characters must remain in the buffer between two successive calls
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        * to this method to implement backup correctly.
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        */
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       char BeginToken() throws java.io.IOException;
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       /**
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        * Returns a string made up of characters from the marked token beginning
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        * to the current buffer position. Implementations have the choice of returning
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        * anything that they want to. For example, for efficiency, one might decide
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        * to just return null, which is a valid implementation.
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        */
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       String GetImage();
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       /**
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        * Returns an array of characters that make up the suffix of length 'len' for
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        * the currently matched token. This is used to build up the matched string
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        * for use in actions in the case of MORE. A simple and inefficient
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        * implementation of this is as follows :
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        *
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        *   {
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        *      String t = GetImage();
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        *      return t.substring(t.length() - len, t.length()).toCharArray();
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        *   }
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        */
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       char[] GetSuffix(int len);
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       /**
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        * The lexer calls this function to indicate that it is done with the stream
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        * and hence implementations can free any resources held by this class.
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        * Again, the body of this function can be just empty and it will not
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        * affect the lexer's operation.
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        */
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       void Done();
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     }
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     /* JavaCC - OriginalChecksum=995d31c169f1d3d55e372131438a66de (do not edit this line) */