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/*
* Copyright (c) 2011, 2018, 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 vm.mlvm.share.jpda;
import nsk.share.ArgumentParser;
import vm.mlvm.share.Env;
import com.sun.jdi.AbsentInformationException;
import com.sun.jdi.Location;
import com.sun.jdi.ObjectReference;
import com.sun.jdi.ReferenceType;
import com.sun.jdi.StackFrame;
public class StratumUtils {
public static boolean checkStratum(Location location, StratumInfo si) throws AbsentInformationException {
// Check stratum information
try {
Env.traceVerbose(String.format("Stratum [%s]: required=[%s:%d]", si.stratum, si.stratumSourceName, si.stratumSourceLine));
Env.traceVerbose(String.format("Default stratum: location=[%s:%d]", location.sourceName(), location.lineNumber()));
String stratumSourceName = location.sourceName(si.stratum);
int stratumSourceLine = location.lineNumber(si.stratum);
String stratumInfo = String.format("actual=[%s:%d]", stratumSourceName, stratumSourceLine);
if (stratumSourceName.equals(si.stratumSourceName) && stratumSourceLine == si.stratumSourceLine) {
Env.traceVerbose("Stratum matches: " + stratumInfo);
return true;
} else {
Env.complain("Stratum mismatch: " + stratumInfo);
return false;
}
} catch (AbsentInformationException e) {
Env.complain(e, "Strata information is absent. Available strata: " + getStrataStr(location.declaringType()));
return false;
}
}
public static StratumInfo parseStratumInfo(String stratumInfo) throws Exception {
int sourceNamePos = stratumInfo.indexOf('=');
int sourceLinePos = stratumInfo.indexOf(':');
if (sourceNamePos == -1 || sourceLinePos == -1 || sourceNamePos >= sourceLinePos) {
throw new ArgumentParser.BadOption("Wrong syntax of stratum information: [" + stratumInfo + "]");
}
return new StratumInfo(
stratumInfo.substring(0, sourceNamePos),
stratumInfo.substring(sourceNamePos + 1, sourceLinePos),
Integer.parseInt(stratumInfo.substring(sourceLinePos + 1)));
}
public static String getStrataStr(StackFrame sf) {
ObjectReference thisObject = sf.thisObject();
if (thisObject == null)
return "(no strata)";
return StratumUtils.getStrataStr(thisObject.referenceType());
}
public static String getStrataStr(ReferenceType ref) {
return ref.availableStrata() + " (" + ref + ")";
}
}
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