Mercurial > hg > graal-compiler
view graal/com.oracle.truffle.api/src/com/oracle/truffle/api/instrument/impl/DefaultVisualizer.java @ 20131:4b12d5355811
Truffle: do not use iterators for visitors.
author | Christian Humer <christian.humer@gmail.com> |
---|---|
date | Thu, 02 Apr 2015 01:27:27 +0200 |
parents | ef30b2318658 |
children | d6d7e51d9206 |
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/* * Copyright (c) 2014, 2015, 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.*; import com.oracle.truffle.api.frame.*; import com.oracle.truffle.api.instrument.*; import com.oracle.truffle.api.nodes.*; import com.oracle.truffle.api.source.*; public class DefaultVisualizer implements Visualizer { private final ASTPrinter astPrinter; public DefaultVisualizer() { this.astPrinter = new DefaultASTPrinter(); } public ASTPrinter getASTPrinter() { return astPrinter; } public String displaySourceLocation(Node node) { if (node == null) { return "<unknown>"; } SourceSection section = node.getSourceSection(); boolean estimated = false; if (section == null) { section = node.getEncapsulatingSourceSection(); estimated = true; } 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(ExecutionContext context, Object value, int trim) { 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)) + "..."; } }