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[GR-24231] Allow Insight scripts to iterate over current stack.
PullRequest: graal/7817
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107 changes: 107 additions & 0 deletions
107
...ools.agentscript/src/com/oracle/truffle/tools/agentscript/impl/AbstractContextObject.java
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,107 @@ | ||
| /* | ||
| * Copyright (c) 2020, 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. Oracle designates this | ||
| * particular file as subject to the "Classpath" exception as provided | ||
| * by Oracle in the LICENSE file that accompanied this code. | ||
| * | ||
| * 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 com.oracle.truffle.tools.agentscript.impl; | ||
|
|
||
| import com.oracle.truffle.api.CompilerDirectives; | ||
| import com.oracle.truffle.api.interop.TruffleObject; | ||
| import com.oracle.truffle.api.interop.UnknownIdentifierException; | ||
| import com.oracle.truffle.api.nodes.Node; | ||
| import com.oracle.truffle.api.source.SourceSection; | ||
|
|
||
| abstract class AbstractContextObject implements TruffleObject { | ||
| static final ArrayObject MEMBERS = ArrayObject.array( | ||
| "name", "source", "characters", | ||
| "line", "startLine", "endLine", | ||
| "column", "startColumn", "endColumn"); | ||
|
|
||
| @CompilerDirectives.CompilationFinal private String name; | ||
| @CompilerDirectives.CompilationFinal(dimensions = 1) private int[] values; | ||
|
|
||
| abstract Node getInstrumentedNode(); | ||
|
|
||
| abstract SourceSection getInstrumentedSourceSection(); | ||
|
|
||
| Object readMember(String member) throws UnknownIdentifierException { | ||
| int index; | ||
| switch (member) { | ||
| case "name": | ||
| if (name == null) { | ||
| CompilerDirectives.transferToInterpreterAndInvalidate(); | ||
| name = getInstrumentedNode().getRootNode().getName(); | ||
| } | ||
| return name; | ||
| case "characters": { | ||
| CompilerDirectives.transferToInterpreter(); | ||
| final SourceSection ss = getInstrumentedSourceSection(); | ||
| if (ss == null) { | ||
| return NullObject.nullCheck(null); | ||
| } | ||
| return ss.getCharacters().toString(); | ||
| } | ||
| case "source": { | ||
| final SourceSection ss = getInstrumentedSourceSection(); | ||
| if (ss == null) { | ||
| return NullObject.nullCheck(null); | ||
| } | ||
| return new SourceEventObject(ss.getSource()); | ||
| } | ||
| case "line": | ||
| case "startLine": | ||
| index = 0; | ||
| break; | ||
| case "endLine": | ||
| index = 1; | ||
| break; | ||
| case "column": | ||
| case "startColumn": | ||
| index = 2; | ||
| break; | ||
| case "endColumn": | ||
| index = 3; | ||
| break; | ||
| default: | ||
| throw UnknownIdentifierException.create(member); | ||
| } | ||
| if (values == null) { | ||
| CompilerDirectives.transferToInterpreterAndInvalidate(); | ||
| values = valuesForContext(); | ||
| } | ||
| return values[index]; | ||
| } | ||
|
|
||
| @CompilerDirectives.TruffleBoundary | ||
| private int[] valuesForContext() { | ||
| final SourceSection section = getInstrumentedSourceSection(); | ||
| if (section == null) { | ||
| return new int[4]; | ||
| } | ||
| return new int[]{ | ||
| section.getStartLine(), | ||
| section.getEndLine(), | ||
| section.getStartColumn(), | ||
| section.getEndColumn() | ||
| }; | ||
| } | ||
| } |
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