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package org.graalvm.compiler.lir.phases;

import java.util.ArrayList;
import java.util.Collections;
import java.util.List;
import java.util.ListIterator;

import org.graalvm.compiler.lir.gen.LIRGenerationResult;

import jdk.vm.ci.code.TargetDescription;

public class LIRPhaseSuite<C> extends LIRPhase<C> {
    private List<LIRPhase<C>> phases;
    private boolean immutable;

    public LIRPhaseSuite() {
        phases = new ArrayList<>();
    }

    
Add a new phase at the beginning of this suite.
/** * Add a new phase at the beginning of this suite. */
public final void prependPhase(LIRPhase<C> phase) { phases.add(0, phase); }
Add a new phase at the end of this suite.
/** * Add a new phase at the end of this suite. */
public final void appendPhase(LIRPhase<C> phase) { phases.add(phase); } public final ListIterator<LIRPhase<C>> findPhase(Class<? extends LIRPhase<C>> phaseClass) { ListIterator<LIRPhase<C>> it = phases.listIterator(); if (findNextPhase(it, phaseClass)) { return it; } else { return null; } } public final <T extends LIRPhase<C>> T findPhaseInstance(Class<T> phaseClass) { ListIterator<LIRPhase<C>> it = phases.listIterator(); while (it.hasNext()) { LIRPhase<C> phase = it.next(); if (phaseClass.isInstance(phase)) { return phaseClass.cast(phase); } } return null; } public static <C> boolean findNextPhase(ListIterator<LIRPhase<C>> it, Class<? extends LIRPhase<C>> phaseClass) { while (it.hasNext()) { LIRPhase<C> phase = it.next(); if (phaseClass.isInstance(phase)) { return true; } } return false; } @Override protected final void run(TargetDescription target, LIRGenerationResult lirGenRes, C context) { for (LIRPhase<C> phase : phases) { phase.apply(target, lirGenRes, context); } } public LIRPhaseSuite<C> copy() { LIRPhaseSuite<C> suite = new LIRPhaseSuite<>(); suite.phases.addAll(phases); return suite; } public boolean isImmutable() { return immutable; } public synchronized void setImmutable() { if (!immutable) { phases = Collections.unmodifiableList(phases); immutable = true; } } }