Mercurial > hg > truffle
view src/share/tools/MakeDeps/MacroDefinitions.java @ 1325:98ba8ca25feb
6936168: Recent fix for unmapping stack guard pages doesn't close /proc/self/maps
Summary: Add close to returns (fix for 6929067 also contributed by aph)
Reviewed-by: aph, dcubed, andrew, acorn
Contributed-by: aph@redhat.com, andreas.kohn@fredhopper.com
author | coleenp |
---|---|
date | Thu, 18 Mar 2010 16:47:37 -0400 |
parents | a61af66fc99e |
children | c18cbe5936b8 |
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/* * Copyright 1999 Sun Microsystems, Inc. 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 Sun Microsystems, Inc., 4150 Network Circle, Santa Clara, * CA 95054 USA or visit www.sun.com if you need additional information or * have any questions. * */ import java.io.*; import java.util.*; public class MacroDefinitions { private Vector macros; public MacroDefinitions() { macros = new Vector(); } private String lookup(String name) throws NoSuchElementException { for (Iterator iter = macros.iterator(); iter.hasNext(); ) { Macro macro = (Macro) iter.next(); if (macro.name.equals(name)) { return macro.contents; } } throw new NoSuchElementException(name); } public void addMacro(String name, String contents) { Macro macro = new Macro(); macro.name = name; macro.contents = contents; macros.add(macro); } private boolean lineIsEmpty(String s) { for (int i = 0; i < s.length(); i++) { if (!Character.isWhitespace(s.charAt(i))) { return false; } } return true; } public void readFrom(String fileName, boolean missingOk) throws FileNotFoundException, FileFormatException, IOException { BufferedReader reader = null; try { reader = new BufferedReader(new FileReader(fileName)); } catch (FileNotFoundException e) { if (missingOk) { return; } else { throw(e); } } String line; do { line = reader.readLine(); if (line != null) { // This had to be rewritten (compare to Database.java) // because the Solaris platform file has been // repurposed and now contains "macros" with spaces in // them. if ((!line.startsWith("//")) && (!lineIsEmpty(line))) { int nameBegin = -1; int nameEnd = -1; boolean gotEquals = false; int contentsBegin = -1; int contentsEnd = -1; int i = 0; // Scan forward for beginning of name while (i < line.length()) { if (!Character.isWhitespace(line.charAt(i))) { break; } i++; } nameBegin = i; // Scan forward for end of name while (i < line.length()) { if (Character.isWhitespace(line.charAt(i))) { break; } i++; } nameEnd = i; // Scan forward for equals sign while (i < line.length()) { if (line.charAt(i) == '=') { gotEquals = true; break; } i++; } // Scan forward for start of contents i++; while (i < line.length()) { if (!Character.isWhitespace(line.charAt(i))) { break; } i++; } contentsBegin = i; // Scan *backward* for end of contents i = line.length() - 1; while (i >= 0) { if (!Character.isWhitespace(line.charAt(i))) { break; } } contentsEnd = i+1; // Now do consistency check if (!((nameBegin < nameEnd) && (nameEnd < contentsBegin) && (contentsBegin < contentsEnd) && (gotEquals == true))) { throw new FileFormatException( "Expected \"macroname = value\", " + "but found: " + line ); } String name = line.substring(nameBegin, nameEnd); String contents = line.substring(contentsBegin, contentsEnd); addMacro(name, contents); } } } while (line != null); reader.close(); } /** Throws IllegalArgumentException if passed token is illegally formatted */ public String expand(String token) throws IllegalArgumentException { // the token may contain one or more <macroName>'s String out = ""; // emacs lingo int mark = 0; int point = 0; int len = token.length(); if (len == 0) return out; do { // Scan "point" forward until hitting either the end of // the string or the beginning of a macro if (token.charAt(point) == '<') { // Append (point - mark) to out if ((point - mark) != 0) { out += token.substring(mark, point); } mark = point + 1; // Scan forward from point for right bracket point++; while ((point < len) && (token.charAt(point) != '>')) { point++; } if (point == len) { throw new IllegalArgumentException( "Could not find right angle-bracket in token " + token ); } String name = token.substring(mark, point); if (name == null) { throw new IllegalArgumentException( "Empty macro in token " + token ); } try { String contents = lookup(name); out += contents; point++; mark = point; } catch (NoSuchElementException e) { throw new IllegalArgumentException( "Unknown macro " + name + " in token " + token ); } } else { point++; } } while (point != len); if (mark != point) { out += token.substring(mark, point); } return out; } public MacroDefinitions copy() { MacroDefinitions ret = new MacroDefinitions(); for (Iterator iter = macros.iterator(); iter.hasNext(); ) { Macro orig = (Macro) iter.next(); Macro macro = new Macro(); macro.name = orig.name; macro.contents = orig.contents; ret.macros.add(macro); } return ret; } public void setAllMacroBodiesTo(String s) { for (Iterator iter = macros.iterator(); iter.hasNext(); ) { Macro macro = (Macro) iter.next(); macro.contents = s; } } /** This returns an Iterator of Macros. You should not mutate the returned Macro objects or use the Iterator to remove macros. */ public Iterator getMacros() { return macros.iterator(); } private void error(String text) throws FileFormatException { throw new FileFormatException( "Expected \"macroname = value\", but found: " + text ); } }