// 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.Set;
import java.util.TreeSet;
public class ReferenceThreshold extends ReferenceTool {
private Set _underreferencedDefinitions;
private int _threshold;
public ReferenceThreshold(SymbolTable table, int threshold) {
super(table.getTree());
_threshold = threshold;
_underreferencedDefinitions = new TreeSet();
go();
}
private void go() {
collectUnderreferencedDefinitions();
}
private void collectUnderreferencedDefinitions() {
handleNode(_tree);
}
protected void handleNode(SymTabAST node) {
if (node.isMeaningful()) {
IDefinition def = node.getDefinition();
if (def != null &&
def.getNumReferences() <= _threshold &&
def instanceof Definition) {
// this is inheritently hackish
// basically we want to ignore
// all test cases and main() methods
if (def.getQualifiedName().indexOf("test") < 0 &&
def.getQualifiedName().indexOf("main") < 0) {
_underreferencedDefinitions.add(def);
}
}
}
walkChildren(node);
}
public Set getUnderreferencedDefinitions() {
return _underreferencedDefinitions;
}
}