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Truffle is a multi-language framework for executing dynamic languages
that achieves high performance when combined with Graal.
/*
* Copyright (c) 2014, 2016, 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.api.instrument.impl;
import com.oracle.truffle.api.CallTarget;
import com.oracle.truffle.api.frame.FrameSlot;
import com.oracle.truffle.api.nodes.Node;
import com.oracle.truffle.api.nodes.RootNode;
import com.oracle.truffle.api.source.SourceSection;
@SuppressWarnings("deprecation")
@Deprecated
public class DefaultVisualizer implements com.oracle.truffle.api.instrument.Visualizer {
private final com.oracle.truffle.api.instrument.ASTPrinter astPrinter;
public DefaultVisualizer() {
this.astPrinter = new DefaultASTPrinter();
}
public com.oracle.truffle.api.instrument.ASTPrinter getASTPrinter() {
return astPrinter;
}
public String displaySourceLocation(Node node) {
if (node == null) {
return "";
}
SourceSection section = node.getSourceSection();
boolean estimated = false;
if (section == null) {
section = node.getEncapsulatingSourceSection();
estimated = true;
}
if (section == null) {
return "";
}
return section.getShortDescription() + (estimated ? "~" : "");
}
public String displayMethodName(Node node) {
if (node == null) {
return null;
}
RootNode root = node.getRootNode();
if (root == null) {
return "unknown";
}
return root.getCallTarget().toString();
}
public String displayCallTargetName(CallTarget callTarget) {
return callTarget.toString();
}
public String displayValue(Object value, int trim) {
if (value == null) {
return "";
}
return trim(value.toString(), trim);
}
public String displayIdentifier(FrameSlot slot) {
return slot.getIdentifier().toString();
}
/**
* Trims text if {@code trim > 0} to the shorter of {@code trim} or the length of the first line
* of test. Identity if {@code trim <= 0}.
*/
protected String trim(String text, int trim) {
if (trim == 0) {
return text;
}
final String[] lines = text.split("\n");
String result = lines[0];
if (lines.length == 1) {
if (result.length() <= trim) {
return result;
}
if (trim <= 3) {
return result.substring(0, Math.min(result.length() - 1, trim - 1));
} else {
return result.substring(0, trim - 4) + "...";
}
}
return (result.length() < trim - 3 ? result : result.substring(0, trim - 4)) + "...";
}
}
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