// Transmogrify License
//
// Copyright (c) 2001, ThoughtWorks, Inc.
// All rights reserved.
// Redistribution and use in source and binary forms, with or without
// modification, are permitted provided that the following conditions
// are met:
// - Redistributions of source code must retain the above copyright notice,
// this list of conditions and the following disclaimer.
// - Redistributions in binary form must reproduce the above copyright
// notice, this list of conditions and the following disclaimer in the
// documentation and/or other materials provided with the distribution.
// Neither the name of the ThoughtWorks, Inc. nor the names of its
// contributors may be used to endorse or promote products derived from this
// software without specific prior written permission.
// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
// TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
// PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR
// CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
// EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
// PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS;
// OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
// WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR
// OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF
// ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
package com.puppycrawl.tools.checkstyle.checks.usage.transmogrify;
import java.util.Hashtable;
import java.util.Vector;
/**
* <code>ScopeIndex</code> provides methods for finding <code>Scope</code>s
* related to a known <code>Occurrence</code>
*/
public class ScopeIndex {
//This is a Hashtable full of Vectors. The keys to this hashtable are filenames.
//Each vector contains all of the scope objects from the specific file.
private Hashtable indexOfFiles = new Hashtable();
public Hashtable getIndex() {
return indexOfFiles;
}
/**
* returns the most specific <code>Scope</code> to which the specified
* <code>Occurence</code> belongs.
*
* @param occ the <code>Occurrence</code> whose <code>Scope</code> we're interested in.
* @return Scope
*/
public Scope lookup(Occurrence occ) {
String key = occ.getFile().getAbsolutePath();
Vector scopeList = getFileVector(key);
Scope result = findScope(scopeList, occ);
return result;
}
/**
* returns the most specific <code>Scope</code> to which the specified
* <code>Occurence</code> belongs from the specified <code>Vector</code>
* of <code>Scope</code>s.
*
* @param occ the <code>Occurrence</code> whose <code>Scope</code> we're interested in.
* @param scopeList the <code>Vector</code> of <code>Scope</code>s to chose from.
* @return Scope
*/
public Scope findScope(Vector scopeList, Occurrence occ) {
int i = 0;
Scope bestSoFar = (Scope) scopeList.elementAt(i);
while (!bestSoFar
.getTreeNode()
.getSpan()
.contains(occ.getLine(), occ.getColumn())) {
i++;
bestSoFar = (Scope) scopeList.elementAt(i);
}
for (; i < scopeList.size(); i++) {
Scope currentScope = (Scope) scopeList.elementAt(i);
if (currentScope
.getTreeNode()
.getSpan()
.contains(occ.getLine(), occ.getColumn())) {
if (bestSoFar
.getTreeNode()
.getSpan()
.contains(currentScope.getTreeNode().getSpan())) {
bestSoFar = currentScope;
}
}
}
return bestSoFar;
}
/**
* adds a <code>Scope</code> to the <code>ScopeIndex</code> for searching.
*
* @param scope the <code>Scope</code> to add.
*/
public void addScope(Scope scope) {
final SymTabAST SymTabAST = scope.getTreeNode();
SymTabAST.getFile();
Vector fileVector =
getFileVector(scope.getTreeNode().getFile().getAbsolutePath());
fileVector.addElement(scope);
}
/**
* returns the <code>Vector</code> containing the <code>Scope</code>s related
* to the specified filename.
*
* @param fileName the fileName to find scopes for.
* @return Vector
*/
private Vector getFileVector(String fileName) {
Vector result = (Vector) indexOfFiles.get(fileName);
if (result == null) {
result = new Vector();
indexOfFiles.put(fileName, result);
}
return result;
}
}