Mercurial > hg > graal-compiler
view src/share/tools/MakeDeps/ArgsParser.java @ 1272:4b58861a3570
Added tag jdk7-b86 for changeset bf823ef06b4f
author | mikejwre |
---|---|
date | Thu, 18 Mar 2010 13:52:49 -0700 |
parents | a61af66fc99e |
children | c18cbe5936b8 |
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/* * Copyright 2005 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. * */ class ArgIterator { String[] args; int i; ArgIterator(String[] args) { this.args = args; this.i = 0; } String get() { return args[i]; } boolean hasMore() { return args != null && i < args.length; } boolean next() { return ++i < args.length; } } abstract class ArgHandler { public abstract void handle(ArgIterator it); } class ArgRule { String arg; ArgHandler handler; ArgRule(String arg, ArgHandler handler) { this.arg = arg; this.handler = handler; } boolean process(ArgIterator it) { if (match(it.get(), arg)) { handler.handle(it); return true; } return false; } boolean match(String rule_pattern, String arg) { return arg.equals(rule_pattern); } } class ArgsParser { ArgsParser(String[] args, ArgRule[] rules, ArgHandler defaulter) { ArgIterator ai = new ArgIterator(args); while (ai.hasMore()) { boolean processed = false; for (int i=0; i<rules.length; i++) { processed |= rules[i].process(ai); if (processed) { break; } } if (!processed) { if (defaulter != null) { defaulter.handle(ai); } else { System.err.println("ERROR: unparsed \""+ai.get()+"\""); ai.next(); } } } } }