Update IParser.java and Parser.java javadoc.

JC

core/org.eclipse.cdt.core/parser/ChangeLog

@@ -1,3 +1,6 @@
+2003-04-30 John Camelon
+	Added some Javadoc to IParser.java and Parser.java.  
+
 2003-04-28 John Camelon
 	Fixed Bug 37019  - RTS: Parser fails on variable defn using constructor 
 	Fixed Bug 36767  - STL Testing: Parser is confused and goes into template function body 

core/org.eclipse.cdt.core/parser/org/eclipse/cdt/internal/core/parser/IParser.java

@@ -1,32 +1,85 @@
-/*
- * Created on Apr 14, 2003
- *
- * To change the template for this generated file go to
- * Window>Preferences>Java>Code Generation>Code and Comments
- */
+/**********************************************************************
+ * Copyright (c) 2002,2003 Rational Software Corporation and others.
+ * All rights reserved.   This program and the accompanying materials
+ * are made available under the terms of the Common Public License v0.5
+ * which accompanies this distribution, and is available at
+ * http://www.eclipse.org/legal/cpl-v05.html
+ * 
+ * Contributors: 
+ * Rational Software - Initial API and implementation
+***********************************************************************/
 package org.eclipse.cdt.internal.core.parser;
 
 import org.eclipse.cdt.internal.core.parser.Parser.Backtrack;
 
+
 /**
+ * This is the external interface that all C and C++ parsers in the CDT
+ * must implement. 
+ * 
  * @author jcamelon
- *
- * To change the template for this generated type comment go to
- * Window>Preferences>Java>Code Generation>Code and Comments
  */
 public interface IParser {
-	public boolean parse() throws Backtrack;
-	public void expression(Object expression) throws Backtrack;
+	
+	
 	/**
-	 * @return
+	 * Request a parse from a pre-configured parser to parse a whole translation unit or file.  
+	 * 
+	 * @return		whether or not the parse was successful 
+	 */
+	public boolean parse();
+	
+	
+	/**
+	 * Request a parse from a pre-configured parser to parse an expression.    
+	 * 
+	 * @param expression	Optional parameter representing an expression object that 
+	 * 						your particular IParserCallback instance would appreciate 
+	 * 	
+	 * @throws Backtrack	thrown if the Scanner/Stream provided does not yield a valid
+	 * 						expression	
+	 */
+	public void expression(Object expression) throws Backtrack;
+	
+	/**
+	 * Is the parser configured for ANSI C or ANSI C++?
+	 * 
+	 * @return	true for C++, false for C
 	 */
 	public boolean isCppNature();
+	
 	/**
-	 * @param b
+	 * Set the Parser explicitly to be a C or C++ parser.
+	 * 
+	 * @param b		true for C++, false for C 
 	 */
 	public void setCppNature(boolean b);
+	
+	/**
+	 * Do we wish to keep track of the lineNumbers/Offset mapping? 
+	 * 
+	 * By default, the value is false.  Setting it to true impacts performance but 
+	 * provides that feature.  
+	 * 
+	 * @param value		true for the feature, false for improved performance
+	 */
 	public void mapLineNumbers( boolean value );
+	
+	/**
+	 * Given an character offset into the file, return the lineNumber this offset maps to.  
+	 * 
+	 * @param offset	character offset in the file
+	 * @return			lineNumber this offset maps to
+	 * @throws NoSuchMethodException	if mapLineNumbers( true ) was not previously called
+	 */
 	public int getLineNumberForOffset(int offset) throws NoSuchMethodException;
+	
+	/**
+	 * If an error was encountered, give us the offset of the token that caused the error.  
+	 * 
+	 * @return		-1 for no error, otherwise the character offset where we encountered 
+	 * 				our first unrecoverable error.
+	 */
 	public int getLastErrorOffset(); 
 	
 }