/*
* Copyright (c) 2003, 2013, Oracle and/or its affiliates. All rights reserved.
* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
*
* This code is free software; you can redistribute it and/or modify it
* under the terms of the GNU General Public License version 2 only, as
* published by the Free Software Foundation.
*
* This code 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
* version 2 for more details (a copy is included in the LICENSE file that
* accompanied this code).
*
* You should have received a copy of the GNU General Public License version
* 2 along with this work; if not, write to the Free Software Foundation,
* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
*
* Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
* or visit www.oracle.com if you need additional information or have any
* questions.
*
*/
package sun.jvm.hotspot.tools.soql;
import java.io.*;
import java.util.*;
import sun.jvm.hotspot.debugger.*;
import sun.jvm.hotspot.oops.*;
import sun.jvm.hotspot.runtime.*;
import sun.jvm.hotspot.tools.*;
import sun.jvm.hotspot.utilities.*;
import sun.jvm.hotspot.utilities.soql.*;
/**
This is command line SOQL (Simple Object Query Language) interpreter.
*/
public class SOQL extends Tool {
public static void main(String[] args) {
SOQL soql = new SOQL();
soql.execute(args);
}
public SOQL() {
super();
}
public SOQL(JVMDebugger d) {
super(d);
}
protected SOQLEngine soqlEngine;
protected BufferedReader in = new BufferedReader(new InputStreamReader(System.in));
protected PrintStream out = System.out;
static protected String prompt = "soql> ";
static protected String secondPrompt = "> ";
public void run() {
soqlEngine = SOQLEngine.getEngine();
while (true) {
try {
out.print(prompt);
String line = in.readLine();
if (line == null) {
return;
}
StringTokenizer st = new StringTokenizer(line);
if (st.hasMoreTokens()) {
String cmd = st.nextToken();
if (cmd.equals("select")) {
handleSelect(line);
} else if (cmd.equals("classes")) {
handleClasses(line);
} else if (cmd.equals("class")) {
handleClass(line);
} else if (cmd.equals("object")) {
handleObject(line);
} else if (cmd.equals("quit")) {
out.println("Bye!");
return;
} else if (cmd.equals("")) {
// do nothing ...
} else {
handleUnknown(line);
}
}
} catch (IOException e) {
e.printStackTrace();
return;
}
}
}
protected void handleSelect(String query) {
StringBuffer buf = new StringBuffer(query);
String tmp = null;
while (true) {
out.print(secondPrompt);
try {
tmp = in.readLine();
} catch (IOException ioe) {
break;
}
if (tmp.equals("") || tmp.equals("go"))
break;
buf.append('\n');
buf.append(tmp);
}
query = buf.toString();
try {
soqlEngine.executeQuery(query,
new ObjectVisitor() {
public void visit(Object o) {
if (o != null && o instanceof JSJavaObject) {
String oopAddr = ((JSJavaObject)o).getOop().getHandle().toString();
out.println(oopAddr);
} else {
out.println((o == null)? "null" : o.toString());
}
}
});
} catch (SOQLException se) {
se.printStackTrace();
}
}
protected void handleClasses(String line) {
// just list all InstanceKlasses
InstanceKlass[] klasses = SystemDictionaryHelper.getAllInstanceKlasses();
for (int i = 0; i < klasses.length; i++) {
out.print(klasses[i].getName().asString().replace('/', '.'));
out.print(" @");
out.println(klasses[i].getAddress());
}
}
protected void handleClass(String line) {
StringTokenizer st = new StringTokenizer(line);
st.nextToken(); // ignore "class"
if (st.hasMoreTokens()) {
String className = st.nextToken();
InstanceKlass klass = SystemDictionaryHelper.findInstanceKlass(className);
if (klass == null) {
out.println("class " + className + " not found");
} else {
// klass.iterate(new OopPrinter(out), true);
// base class
InstanceKlass base = (InstanceKlass) klass.getSuper();
if (base != null) {
out.println("super");
out.print("\t");
out.println(base.getName().asString().replace('/', '.'));
}
// list immediate fields only
U2Array fields = klass.getFields();
int numFields = (int) fields.length();
ConstantPool cp = klass.getConstants();
out.println("fields");
if (numFields != 0) {
for (int f = 0; f < numFields; f++){
Symbol f_name = klass.getFieldName(f);
Symbol f_sig = klass.getFieldSignature(f);
StringBuffer sigBuf = new StringBuffer();
new SignatureConverter(f_sig, sigBuf).dispatchField();
out.print('\t');
out.print(sigBuf.toString().replace('/', '.'));
out.print(' ');
out.println(f_name.asString());
}
} else {
out.println("\tno fields in this class");
}
}
} else {
out.println("usage: class <name of the class>");
}
}
protected Oop getOopAtAddress(Address addr) {
OopHandle oopHandle = addr.addOffsetToAsOopHandle(0);
return VM.getVM().getObjectHeap().newOop(oopHandle);
}
protected void handleObject(String line) {
StringTokenizer st = new StringTokenizer(line);
st.nextToken(); // ignore "object"
if (st.hasMoreTokens()) {
String addrStr = st.nextToken();
Address addr = null;
Debugger dbg = VM.getVM().getDebugger();
try {
addr = dbg.parseAddress(addrStr);
} catch (Exception e) {
out.println("invalid address : " + e.getMessage());
return;
}
Oop oop = null;
try {
oop = getOopAtAddress(addr);
} catch (Exception e) {
out.println("invalid object : " + e.getMessage());
}
if (oop != null) {
oop.iterate(new OopPrinter(out), true);
} else {
out.println("null object!");
}
} else {
out.println("usage: object <address>");
}
}
protected void handleUnknown(String line) {
out.println("Unknown command!");
}
}