/**
* JipeMethodFinder.java - SpeedBar window. Copyright (c) 1996-2000 Steve Lawson. E-Mail
* steve@e-i-s.co.uk Latest version found at http://e-i-s.co.uk/jipe
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the free Software
* Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
*/
package jipe;
import java.awt.*;
import java.awt.event.*;
import java.util.*;
import java.io.*;
import javax.swing.text.*;
import javax.swing.*;
import javax.swing.event.*;
import javax.swing.tree.*;
import java.net.URL;
import java.util.Date;
import java.text.SimpleDateFormat;
public class JipeMethodFinder implements ListSelectionListener{
Jipe jipe;
public JList results;
public Vector positions;
public JipeMethodFinder(Jipe parent){
jipe=parent;
results = new JList();
results.setVisibleRowCount(10);
results.addListSelectionListener(this);
positions = new Vector();
results.setFont(new Font(jipe.props.FONTSTYLE, 0, jipe.props.FONTSIZE));
}
public void removeList()
{
positions.removeAllElements();
results.setListData(positions);
}
protected void parse()
{
try
{
positions.removeAllElements();
Vector data = new Vector();
Element map =
jipe.activeChild.textarea.getDocument().getDefaultRootElement();
int lines = map.getElementCount();
for (int i = 0; i < lines; i++)
{
Element lineElement = map.getElement(i);
int start = lineElement.getStartOffset();
String lineString = jipe.activeChild.textarea.getText(start,
lineElement.getEndOffset() - start - 1);
if (isMethod(lineString))
{
String splitstring = SplitString(lineString);
data.addElement(splitstring);
// data.addElement(lineString.substring(
// getMethodStartIndex(), getMethodEndIndex()));
positions.addElement(jipe.activeChild.textarea.getDocument().createPosition
(start + getMethodStartIndex()));
}
}
results.setListData(data);
}
catch (BadLocationException ble)
{
}
}
/**
* Methods indexes
*/
private int startIndex;
private int endIndex;
/**
* Braces indexex
*/
private int parenthesisOpen = -1;
private int parenthesisClose = -1;
/**
* Several booleans needed to determine if our 'method' can be displayed
*/
private boolean isInComment;
private boolean isString;
private boolean isVariable;
private boolean isInstruction;
private boolean oneWord;
private int getMethodStartIndex()
{
return startIndex;
}
private int getMethodEndIndex()
{
return endIndex;
}
private boolean isMethod(String data)
{
// Used to determine the method start index
isVariable = isInstruction = oneWord = false;
parenthesisOpen = parenthesisClose = -1;
boolean isIndented = false;
startIndex = endIndex = 0;
// Current character
char c;
char comment = '\0';
// Last parsed char
char lastChar = '\0';
// Index of the comment, if one, on current line See below its usage
int commentIndex = -1;
out:
for (int i = 0; i < data.length(); i++)
{
switch (c = data.charAt(i))
{
case ' ':
case '\t': // needed to
// remove blanks
// spaces and
// ensure we
if (!isIndented && !isString && !isInComment) // got
// at
// least
// one
// word
// before
// parenthesis
startIndex++;
else if ((i < data.length() - 1) &&
data.charAt(i + 1) != '(')
oneWord = true;
lastChar = ' ';
break;
case '\"': // the user may
// have declared
// methods in a
// String
if (isInComment)
break; // we have to
// avoid these
// 'declares'
if (!isIndented)
isIndented = true;
if (!isString)
isString = true;
else
isString = false;
lastChar = '\"';
break;
case '/': // coders often
// place
// method(s) in
// comments
if (!isIndented)
isIndented = true; // we have to
// avoid'em too
if (isString)
break;
if (lastChar == '/')
{
if (isInComment)
break;
isInComment = true;
commentIndex = i;
comment = '/';
break out;
}
else if (lastChar == '*')
isInComment = false;
else
lastChar = '/';
break;
case '*': // if we
// encounter
// this, the
// comment might
// ends
if (!isIndented)
isIndented = true; // here...
if (isString)
break;
if (lastChar == '/')
{
if (isInComment)
break;
isInComment = true;
commentIndex = i;
}
else
lastChar = '*';
break;
case '(': // a method
// declare is
// made of a
// opening
// parethesis
if (!isInComment && !isString) // and of a
// closing one
parenthesisOpen = i;
lastChar = '(';
break;
case ')': // that's what
// I've just said
if (!isInComment && !isString)
if (parenthesisClose == -1)
parenthesisClose = i;
lastChar = ')';
break;
case '=':
case '?':
case '!':
case ':': // these chars
// NEVER appear
// in a method
// declare
if (!isInComment && !isString)
isVariable = true;
lastChar = c;
break;
case ';':
case '|':
case '&': // these chars
// NEVER appear
// in a method
// declare
if (!isInComment && !isString)
isInstruction = true;
lastChar = ';';
break;
default:
if (!isIndented)
isIndented = true;
if (isString || isInComment)
break;
lastChar = c;
break;
}
}
if (commentIndex == -1)
commentIndex = data.length();
// our String must be out of a String, out of a comment, contain at
// least one word before the parenthesis, have an opening and a
// closing parenthesis and the opening parenthesis must be placed
// before the closing one
if (!isInComment && !isString && !isVariable && !isInstruction &&
oneWord && parenthesisOpen != -1 && parenthesisClose != -1 &&
parenthesisOpen < parenthesisClose && parenthesisClose <=
commentIndex)
{
// Silly hack !! To FIX #################### necessary because
// methods declares really look like those blocks code
if (data.indexOf("if") == -1 && data.indexOf("catch") == -1 && data.indexOf
("new") == -1 && data.indexOf("switch") == -1 && data.indexOf(
"while") == -1)
{
endIndex = parenthesisClose + 1;
if (comment == '/')
isInComment = false;
return true;
}
}
if (comment == '/')
isInComment = false;
return false;
}
private String SplitString(String stringname)
{
String s = null;
int pos = stringname.indexOf('(');
if (pos != -1)
s = stringname.substring(0, pos);
StringTokenizer t = new StringTokenizer(s, " ");
while (t.hasMoreTokens())
s = t.nextToken().trim();
return s;
}
public void valueChanged(ListSelectionEvent evt)
{
if (results.isSelectionEmpty() || evt.getValueIsAdjusting() ||
jipe.activeChild == null)
return;
Position pos = (Position)positions.elementAt(
results.getSelectedIndex());
Element map =
jipe.activeChild.textarea.getDocument().getDefaultRootElement();
Element lineElement = map.getElement(map.getElementIndex(
pos.getOffset()));
if (lineElement == null)
return;
jipe.activeChild.textarea.select(lineElement.getStartOffset(),
lineElement.getEndOffset() - 1);
}
}
