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package org.graalvm.compiler.replacements.test;

import org.graalvm.compiler.core.test.GraalCompilerTest;

import org.junit.Test;

import jdk.vm.ci.code.InstalledCode;

import jdk.vm.ci.code.InvalidInstalledCodeException;

import jdk.vm.ci.meta.ResolvedJavaMethod;

public class IntegerExactExceptionTest extends GraalCompilerTest {

    static int intCounter = 32;

    public void testIntegerExactOverflowSnippet(int input) {

        try {

            intCounter = Math.addExact(intCounter, input);

        } catch (ArithmeticException e) {

            intCounter = intCounter / 2;

        }

    }

    @Test

    public void testIntegerExact() throws InvalidInstalledCodeException {

        ResolvedJavaMethod method = getResolvedJavaMethod("testIntegerExactOverflowSnippet");

        InstalledCode code = getCode(method);

        code.executeVarargs(this, Integer.MAX_VALUE);

        if (!code.isValid()) {

            code = getCode(method);

            code.executeVarargs(this, Integer.MAX_VALUE);

            assertTrue(code.isValid());

        }

    }

    public void testIntegerExactOverflowWithoutHandlerSnippetW(int input) {

        try {

            intCounter = Math.addExact(intCounter, input);

        } finally {

            intCounter = intCounter / 2;

        }

    }

    @Test

    public void testIntegerExactWithoutHandler() throws InvalidInstalledCodeException {

        ResolvedJavaMethod method = getResolvedJavaMethod("testIntegerExactOverflowWithoutHandlerSnippetW");

        InstalledCode code = getCode(method);

        try {

            code.executeVarargs(this, Integer.MAX_VALUE);

        } catch (ArithmeticException e) {

            // An ArithmeticException is expected to be thrown.

        }

        if (!code.isValid()) {

            code = getCode(method);

            try {

                code.executeVarargs(this, Integer.MAX_VALUE);

            } catch (ArithmeticException e) {

                // An ArithmeticException is expected to be thrown.

            }

            assertTrue(code.isValid());

        }

    }

    public void testIntegerExactOverflowWithoutUse1(int input) {

        Math.addExact(intCounter, input);

    }

    public void testIntegerExactOverflowWithoutUse2(int input, boolean cond) {

        if (cond) {

            Math.addExact(intCounter, input);

        } else {

            intCounter = Math.addExact(intCounter, input);

        }

    }

    public void testIntegerExactOverflowWithoutUse3() {

        Math.addExact(Integer.MAX_VALUE, 1);

    }

    @Test

    public void testIntegerExactWithoutUse1() throws InvalidInstalledCodeException {

        ResolvedJavaMethod method = getResolvedJavaMethod("testIntegerExactOverflowWithoutUse1");

        InstalledCode code = getCode(method);

        boolean gotException = false;

        try {

            code.executeVarargs(this, Integer.MAX_VALUE);

        } catch (ArithmeticException e) {

            gotException = true;

        }

        assertTrue(gotException);

    }

    @Test

    public void testIntegerExactWithoutUse2() throws InvalidInstalledCodeException {

        ResolvedJavaMethod method = getResolvedJavaMethod("testIntegerExactOverflowWithoutUse2");

        InstalledCode code = getCode(method);

        boolean gotException = false;

        try {

            code.executeVarargs(this, Integer.MAX_VALUE, true);

        } catch (ArithmeticException e) {

            gotException = true;

        }

        assertTrue(gotException);

    }

    @Test

    public void testIntegerExactWithoutUse3() throws InvalidInstalledCodeException {

        ResolvedJavaMethod method = getResolvedJavaMethod("testIntegerExactOverflowWithoutUse3");

        InstalledCode code = getCode(method);

        boolean gotException = false;

        try {

            code.executeVarargs(this);

        } catch (ArithmeticException e) {

            gotException = true;

        }

        assertTrue(gotException);

    }

    static long longCounter = 10;

    public void testLongExactOverflowSnippet(long input) {

        try {

            longCounter = Math.addExact(longCounter, input);

        } catch (ArithmeticException e) {

            longCounter = longCounter / 2;

        }

    }

    @Test

    public void testLongExact() throws InvalidInstalledCodeException {

        ResolvedJavaMethod method = getResolvedJavaMethod("testLongExactOverflowSnippet");

        InstalledCode code = getCode(method);

        code.executeVarargs(this, Long.MAX_VALUE);

        if (!code.isValid()) {

            code = getCode(method);

            code.executeVarargs(this, Long.MAX_VALUE);

            assertTrue(code.isValid());

        }

    }

    public void testLongExactWithoutHandlerSnippet(long input) {

        try {

            longCounter = Math.addExact(longCounter, input);

        } finally {

            longCounter = longCounter / 2;

        }

    }

    @Test

    public void testLongExactWithoutHandler() throws InvalidInstalledCodeException {

        ResolvedJavaMethod method = getResolvedJavaMethod("testLongExactWithoutHandlerSnippet");

        InstalledCode code = getCode(method);

        try {

            code.executeVarargs(this, Long.MAX_VALUE);

        } catch (ArithmeticException e) {

            // An ArithmeticException is expected to be thrown.

        }

        if (!code.isValid()) {

            code = getCode(method);

            try {

                code.executeVarargs(this, Long.MAX_VALUE);

            } catch (ArithmeticException e) {

                // An ArithmeticException is expected to be thrown.

            }

            assertTrue(code.isValid());

        }

    }

    public void testLongExactOverflowWithoutUse1(long input) {

        Math.addExact(longCounter, input);

    }

    public void testLongExactOverflowWithoutUse2(long input, boolean cond) {

        if (cond) {

            Math.addExact(longCounter, input);

        } else {

            longCounter = Math.addExact(longCounter, input);

        }

    }

    @Test

    public void testLongExactWithoutUse1() throws InvalidInstalledCodeException {

        ResolvedJavaMethod method = getResolvedJavaMethod("testLongExactOverflowWithoutUse1");

        InstalledCode code = getCode(method);

        boolean gotException = false;

        try {

            code.executeVarargs(this, Long.MAX_VALUE);

        } catch (ArithmeticException e) {

            gotException = true;

        }

        assertTrue(gotException);

    }

    @Test

    public void testLongExactWithoutUse2() throws InvalidInstalledCodeException {

        ResolvedJavaMethod method = getResolvedJavaMethod("testLongExactOverflowWithoutUse2");

        InstalledCode code = getCode(method);

        boolean gotException = false;

        try {

            code.executeVarargs(this, Long.MAX_VALUE, true);

        } catch (ArithmeticException e) {

            gotException = true;

        }

        assertTrue(gotException);

    }

}