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/*******************************************************************************
* Copyright (c) 2004 IBM Corporation and others.
* All rights reserved. This program and the accompanying materials
* are made available under the terms of the Eclipse Public License v1.0
* which accompanies this distribution, and is available at
* http://www.eclipse.org/legal/epl-v10.html
*
* Contributors:
* IBM Corporation - initial API and implementation
*******************************************************************************/
package org.eclipse.swt.tools.internal;
import java.lang.reflect.*;
import java.util.regex.Matcher;
import java.util.regex.Pattern;
public class LockGenerator extends CleanupClass {
public LockGenerator() {
}
String getParams(Method method) {
int n_args = method.getParameterTypes().length;
if (n_args == 0) return "";
String name = method.getName();
String params = "";
int index = 0;
while (true) {
index = classSource.indexOf(name, index + 1);
if (!Character.isWhitespace(classSource.charAt(index - 1))) continue;
if (index == -1) return null;
int parantesesStart = classSource.indexOf("(", index);
if (classSource.substring(index + name.length(), parantesesStart).trim().length() == 0) {
int parantesesEnd = classSource.indexOf(")", parantesesStart);
params = classSource.substring(parantesesStart + 1, parantesesEnd);
break;
}
}
return params;
}
String getReturn(Method method) {
Class returnType = method.getReturnType();
if (returnType != Integer.TYPE) return getTypeSignature3(returnType);
String modifierStr = Modifier.toString(method.getModifiers());
String name = method.getName();
Pattern p = Pattern.compile(modifierStr + ".*" + name + ".*(.*)");
Matcher m = p.matcher(classSource);
if (m.find()) {
String methodStr = classSource.substring(m.start(), m.end());
int index = methodStr.indexOf("/*long*/");
if (index != -1 && index < methodStr.indexOf(name)) {
return getTypeSignature3(Integer.TYPE) + " /*long*/";
}
}
return getTypeSignature3(Integer.TYPE);
}
public void generate(Class clazz) {
super.generate(clazz);
Method[] methods = clazz.getDeclaredMethods();
generate(methods);
}
public void generate(Method[] methods) {
sort(methods);
for (int i = 0; i < methods.length; i++) {
Method method = methods[i];
if ((method.getModifiers() & Modifier.NATIVE) == 0) continue;
generate(method);
}
}
public void generate(Method method) {
int modifiers = method.getModifiers();
boolean lock = (modifiers & Modifier.SYNCHRONIZED) != 0;
String returnStr = getReturn(method);
String paramsStr = getParams(method);
if (lock) {
String modifiersStr = Modifier.toString(modifiers & ~Modifier.SYNCHRONIZED);
output(modifiersStr);
if (modifiersStr.length() > 0) output(" ");
output(returnStr);
output(" _");
output(method.getName());
output("(");
output(paramsStr);
outputln(");");
}
String modifiersStr = Modifier.toString(modifiers & ~(Modifier.SYNCHRONIZED | (lock ? Modifier.NATIVE : 0)));
output(modifiersStr);
if (modifiersStr.length() > 0) output(" ");
output(returnStr);
output(" ");
output(method.getName());
output("(");
output(paramsStr);
output(")");
if (lock) {
outputln(" {");
outputln("\tlock.lock();");
outputln("\ttry {");
output("\t\t");
if (method.getReturnType() != Void.TYPE) {
output("return ");
}
output("_");
output(method.getName());
output("(");
String[] paramNames = getArgNames(method);
for (int i = 0; i < paramNames.length; i++) {
if (i != 0) output(", ");
output(paramNames[i]);
}
outputln(");");
outputln("\t} finally {");
outputln("\t\tlock.unlock();");
outputln("\t}");
outputln("}");
} else {
outputln(";");
}
}
public static void main(String[] args) {
if (args.length < 2) {
System.out.println("Usage: java LockGenerator <OS className> <OS class source>");
return;
}
try {
LockGenerator gen = new LockGenerator();
String clazzName = args[0];
String classSource = args[1];
Class clazz = Class.forName(clazzName);
gen.setClassSourcePath(classSource);
gen.generate(clazz);
} catch (Exception e) {
System.out.println("Problem");
e.printStackTrace(System.out);
}
}
}
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