1 /* 2 * Copyright (c) 2015, 2018, Oracle and/or its affiliates. All rights reserved. 3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. 4 * 5 * This code is free software; you can redistribute it and/or modify it 6 * under the terms of the GNU General Public License version 2 only, as 7 * published by the Free Software Foundation. 8 * 9 * This code is distributed in the hope that it will be useful, but WITHOUT 10 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or 11 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License 12 * version 2 for more details (a copy is included in the LICENSE file that 13 * accompanied this code). 14 * 15 * You should have received a copy of the GNU General Public License version 16 * 2 along with this work; if not, write to the Free Software Foundation, 17 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. 18 * 19 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA 20 * or visit www.oracle.com if you need additional information or have any 21 * questions. 22 */ 23 24 25 package org.graalvm.compiler.lir.phases; 26 27 import java.util.ArrayList; 28 import java.util.Collections; 29 import java.util.List; 30 import java.util.ListIterator; 31 32 import org.graalvm.compiler.lir.gen.LIRGenerationResult; 33 34 import jdk.vm.ci.code.TargetDescription; 35 36 public class LIRPhaseSuite<C> extends LIRPhase<C> { 37 private List<LIRPhase<C>> phases; 38 private boolean immutable; 39 LIRPhaseSuite()40 public LIRPhaseSuite() { 41 phases = new ArrayList<>(); 42 } 43 44 /** 45 * Gets an unmodifiable view on the phases in this suite. 46 */ getPhases()47 public List<LIRPhase<C>> getPhases() { 48 return Collections.unmodifiableList(phases); 49 } 50 51 /** 52 * Add a new phase at the beginning of this suite. 53 */ prependPhase(LIRPhase<C> phase)54 public final void prependPhase(LIRPhase<C> phase) { 55 phases.add(0, phase); 56 } 57 58 /** 59 * Add a new phase at the end of this suite. 60 */ appendPhase(LIRPhase<C> phase)61 public final void appendPhase(LIRPhase<C> phase) { 62 phases.add(phase); 63 } 64 findPhase(Class<? extends LIRPhase<C>> phaseClass)65 public final ListIterator<LIRPhase<C>> findPhase(Class<? extends LIRPhase<C>> phaseClass) { 66 ListIterator<LIRPhase<C>> it = phases.listIterator(); 67 if (findNextPhase(it, phaseClass)) { 68 return it; 69 } else { 70 return null; 71 } 72 } 73 findPhaseInstance(Class<T> phaseClass)74 public final <T extends LIRPhase<C>> T findPhaseInstance(Class<T> phaseClass) { 75 ListIterator<LIRPhase<C>> it = phases.listIterator(); 76 while (it.hasNext()) { 77 LIRPhase<C> phase = it.next(); 78 if (phaseClass.isInstance(phase)) { 79 return phaseClass.cast(phase); 80 } 81 } 82 return null; 83 } 84 findNextPhase(ListIterator<LIRPhase<C>> it, Class<? extends LIRPhase<C>> phaseClass)85 public static <C> boolean findNextPhase(ListIterator<LIRPhase<C>> it, Class<? extends LIRPhase<C>> phaseClass) { 86 while (it.hasNext()) { 87 LIRPhase<C> phase = it.next(); 88 if (phaseClass.isInstance(phase)) { 89 return true; 90 } 91 } 92 return false; 93 } 94 95 @Override run(TargetDescription target, LIRGenerationResult lirGenRes, C context)96 protected final void run(TargetDescription target, LIRGenerationResult lirGenRes, C context) { 97 for (LIRPhase<C> phase : phases) { 98 phase.apply(target, lirGenRes, context); 99 } 100 } 101 copy()102 public LIRPhaseSuite<C> copy() { 103 LIRPhaseSuite<C> suite = new LIRPhaseSuite<>(); 104 suite.phases.addAll(phases); 105 return suite; 106 } 107 isImmutable()108 public boolean isImmutable() { 109 return immutable; 110 } 111 setImmutable()112 public synchronized void setImmutable() { 113 if (!immutable) { 114 phases = Collections.unmodifiableList(phases); 115 immutable = true; 116 } 117 } 118 } 119