/**

 * Back 2 Browser Bytecode Translator

 * Copyright (C) 2012 Jaroslav Tulach <jaroslav.tulach@apidesign.org>

 *

 * This program is free software: you can redistribute it and/or modify

 * it under the terms of the GNU General Public License as published by

 * the Free Software Foundation, version 2 of the License.

 *

 * This program 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 for more details.

 *

 * You should have received a copy of the GNU General Public License

 * along with this program. Look for COPYING file in the top folder.

 * If not, see http://opensource.org/licenses/GPL-2.0.

 */

package org.apidesign.bck2brwsr.vmtest.impl;

import java.lang.reflect.Method;

import java.util.Map;

import java.util.WeakHashMap;

import javax.script.Invocable;

import org.apidesign.bck2brwsr.launcher.MethodInvocation;

import org.testng.ITest;

import org.testng.annotations.Test;

/**

 *

 * @author Jaroslav Tulach <jtulach@netbeans.org>

 */

public final class Bck2BrwsrCase implements ITest {

    private final Method m;

    private final Launchers l;

    private final int type;

    Object value;

    private Invocable code;

    private CharSequence codeSeq;

    private static final Map<Class, Object[]> compiled = new WeakHashMap<>();

    private Object inst;

    Bck2BrwsrCase(Method m, int type, Launchers l) {

        this.l = l;

        this.m = m;

        this.type = type;

    }

    @Test(groups = "run")

    public void executeCode() throws Throwable {

        if (type == 1) {

            MethodInvocation c = l.invokeMethod(m.getDeclaringClass(), m.getName(), false);

            value = c.toString();

        } else if (type == 2) {

            MethodInvocation c = l.invokeMethod(m.getDeclaringClass(), m.getName(), true);

            value = c.toString();

        } else {

            value = m.invoke(m.getDeclaringClass().newInstance());

        }

    }

    @Override

    public String getTestName() {

        return m.getName() + "[" + typeName() + "]";

    }

    final String typeName() {

        switch (type) {

            case 0:

                return "Java";

            case 1:

                return "JavaScript";

            case 2:

                return "Browser";

            default:

                return "Unknown type " + type;

        }

    }

    private static String computeSignature(Method m) {

        StringBuilder sb = new StringBuilder();

        appendType(sb, m.getReturnType());

        for (Class<?> c : m.getParameterTypes()) {

            appendType(sb, c);

        }

        return sb.toString();

    }

    private static void appendType(StringBuilder sb, Class<?> t) {

        if (t == null) {

            sb.append('V');

            return;

        }

        if (t.isPrimitive()) {

            int ch = -1;

            if (t == int.class) {

                ch = 'I';

            }

            if (t == short.class) {

                ch = 'S';

            }

            if (t == byte.class) {

                ch = 'B';

            }

            if (t == boolean.class) {

                ch = 'Z';

            }

            if (t == long.class) {

                ch = 'J';

            }

            if (t == float.class) {

                ch = 'F';

            }

            if (t == double.class) {

                ch = 'D';

            }

            assert ch != -1 : "Unknown primitive type " + t;

            sb.append((char) ch);

            return;

        }

        if (t.isArray()) {

            sb.append("_3");

            appendType(sb, t.getComponentType());

            return;

        }

        sb.append('L');

        sb.append(t.getName().replace('.', '_'));

        sb.append("_2");

    }

}