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 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
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 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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 * accompanied this code).
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package org.graalvm.compiler.truffle.test;

import java.util.concurrent.atomic.AtomicBoolean;
import org.graalvm.compiler.core.test.GraalCompilerTest;
import org.graalvm.compiler.truffle.common.TruffleCompiler;
import org.graalvm.compiler.truffle.compiler.TruffleCompilerImpl;
import org.graalvm.compiler.truffle.runtime.GraalTruffleRuntime;
import org.graalvm.compiler.truffle.runtime.OptimizedCallTarget;
import org.graalvm.polyglot.Context;
import org.junit.After;
import org.junit.Assume;

public abstract class TruffleCompilerImplTest extends GraalCompilerTest {

    private final TruffleCompilerImpl truffleCompiler;
    private final AtomicBoolean compilerInitialized = new AtomicBoolean();
    private Context activeContext;

    protected TruffleCompilerImplTest() {
        GraalTruffleRuntime runtime = GraalTruffleRuntime.getRuntime();
        TruffleCompiler compiler = runtime.newTruffleCompiler();
        Assume.assumeTrue("cannot get whitebox interface to Truffle compiler", compiler instanceof TruffleCompilerImpl);
        this.truffleCompiler = (TruffleCompilerImpl) compiler;
    }

    protected final TruffleCompilerImpl getTruffleCompiler(OptimizedCallTarget callTarget) {
        if (compilerInitialized.compareAndSet(false, true)) {
            truffleCompiler.initialize(GraalTruffleRuntime.getOptionsForCompiler(callTarget), callTarget, true);
        }
        return truffleCompiler;
    }

    protected final void setupContext(Context newContext) {
        cleanup();
        newContext.enter();
        activeContext = newContext;
    }

    protected final void setupContext() {
        setupContext(Context.newBuilder());
    }

    protected final void setupContext(Context.Builder builder) {
        setupContext(builder.allowAllAccess(true).option("engine.InstrumentExceptionsAreThrown", "true").build());
    }

    protected final Context getContext() {
        return activeContext;
    }

    @After
    public final void cleanup() {
        if (activeContext != null) {
            activeContext.leave();
            activeContext.close();
            activeContext = null;
        }
    }
}