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package com.modulus.dataread.expressions;
/**
* Interface defines a set of rules used to parse
* text files. These rules include such rules like
* in string or folder start and end etc.
*
* @author jrahm
*
*/
public interface ParseRules {
/**
* First formats the code to make
* life much easier for the parser.
*
* This should be the first method to be
* called at all times.
*/
void format();
/**
* Signals these parse rules that the user has read the character at
* the point <code>off</code> of which the parser dictates how much
* code to skip.
*
* @param off point in the code which was read
* @return how many characters the parser should skip.
*/
int read( int off );
/**
* Returns true if the parser is in quotes, false otherwise.
*
* @return true if the parser is in quotes, false otherwuse.
*/
boolean inQuotes();
/**
* Returns true if the parser is in a
* comment or not.
*
* @return true if the parser is in a
* comment or not.
*/
boolean inComment();
/**
* returns true if at position <code>off</code>
* a folder is being opened.
*
* @param off the position in the code
* @return true if at position <code>off</code> a
* folder is being opened.
*/
boolean openFolder( int off );
/**
* returns true if at position <code>off</code>
* a folder is being closed in the code.
*
* @param off the position of the parser
* @return if a folder is being closed at position <code>off</code>
*/
boolean closeFolder( int off );
/**
* returns true if a statement is terminated at position <code>off</code>
*
* @param off the position in the code.
* @return true if a statement is terminated at position <code>off</code>
*/
boolean statementTerminated( int off );
/**
* Returns the code which these parse rules are using.
* @return the code which these parse rules are using.
*/
String getCode();
/**
* Returns the line number of this reader
*/
int getLineNumber();
}
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