com.hazelcast.org.codehaus.janino.samples.DeclarationCounter Maven / Gradle / Ivy
/*
* Janino - An embedded Java[TM] com.hazelcast.com.iler
*
* Copyright (c) 2001-2010 Arno Unkrig. All rights reserved.
* Copyright (c) 2015-2016 TIBCO Software 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:
*
* 1. Redistributions of source code must retain the above copyright notice, this list of conditions and the
* following disclaimer.
* 2. 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.
* 3. Neither the name of the copyright holder 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 HOLDER 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,
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* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
package com.hazelcast.org.codehaus.janino.samples;
import java.io.FileReader;
import java.io.IOException;
import com.hazelcast.org.codehaus.com.hazelcast.com.ons.com.hazelcast.com.iler.CompileException;
import com.hazelcast.org.codehaus.janino.Java;
import com.hazelcast.org.codehaus.janino.Parser;
import com.hazelcast.org.codehaus.janino.Scanner;
import com.hazelcast.org.codehaus.janino.util.AbstractTraverser;
/**
* An example application for the {@link com.hazelcast.org.codehaus.janino.util.Traverser}: Reads, scans and parses the files named
* on the com.hazelcast.com.and line and counts several kinds of declarations.
*/
public
class DeclarationCounter extends AbstractTraverser {
public static void // SUPPRESS CHECKSTYLE JavadocMethod
main(String[] args) throws CompileException, IOException {
DeclarationCounter dc = new DeclarationCounter();
for (String fileName : args) {
// Parse each com.hazelcast.com.ilation unit.
FileReader r = new FileReader(fileName);
Java.CompilationUnit cu;
try {
cu = new Parser(new Scanner(fileName, r)).parseCompilationUnit();
} finally {
r.close();
}
// Traverse it and count declarations.
dc.traverseCompilationUnit(cu);
}
System.out.println("Class declarations: " + dc.classDeclarationCount);
System.out.println("Interface declarations: " + dc.interfaceDeclarationCount);
System.out.println("Fields: " + dc.fieldCount);
System.out.println("Local variables: " + dc.localVariableCount);
}
// Count class declarations.
@Override public void
traverseClassDeclaration(Java.AbstractClassDeclaration cd) {
++this.classDeclarationCount;
super.traverseClassDeclaration(cd);
}
private int classDeclarationCount;
// Count interface declarations.
@Override public void
traverseInterfaceDeclaration(Java.InterfaceDeclaration id) {
++this.interfaceDeclarationCount;
super.traverseInterfaceDeclaration(id);
}
private int interfaceDeclarationCount;
// Count fields.
@Override public void
traverseFieldDeclaration(Java.FieldDeclaration fd) {
this.fieldCount += fd.variableDeclarators.length;
super.traverseFieldDeclaration(fd);
}
private int fieldCount;
// Count local variables.
@Override public void
traverseLocalVariableDeclarationStatement(Java.LocalVariableDeclarationStatement lvds) {
this.localVariableCount += lvds.variableDeclarators.length;
super.traverseLocalVariableDeclarationStatement(lvds);
}
private int localVariableCount;
}