/*
 * Copyright (c) 2024, Oracle and/or its affiliates. All rights reserved.
 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
 *
 * This code is free software; you can redistribute it and/or modify it
 * under the terms of the GNU General Public License version 2 only, as
 * published by the Free Software Foundation.
 *
 * This code 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
 * version 2 for more details (a copy is included in the LICENSE file that
 * accompanied this code).
 *
 * You should have received a copy of the GNU General Public License version
 * 2 along with this work; if not, write to the Free Software Foundation,
 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
 *
 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
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 */

/*
 * @test
 * @summary Example test to use the Compile Framework.
 * @modules java.base/jdk.internal.misc
 * @library /test/lib /
 * @run driver compile_framework.examples.SimpleJasmExample
 */

package compile_framework.examples;

import compiler.lib.compile_framework.*;

/**
 * This test shows a simple compilation of java source code, and its invocation.
 */
public class SimpleJasmExample {

    // Generate a source jasm file as String
    public static String generate() {
        return """
               super public class XYZ {
                   public static Method test:"(I)I"
                   stack 20 locals 20
                   {
                       iload_0;
                       iconst_2;
                       imul;
                       ireturn;
                   }
               }
               """;
    }

    public static void main(String[] args) {
        // Create a new CompileFramework instance.
        CompileFramework comp = new CompileFramework();

        // Add a java source file.
        String src = generate();
        comp.addJasmSourceCode("XYZ", src);

        // Compile the source file.
        comp.compile();

        // Object ret = XYZ.test(5);
        Object ret = comp.invoke("XYZ", "test", new Object[] {5});

        // Extract return value of invocation, verify its value.
        int i = (int)ret;
        System.out.println("Result of call: " + i);
        if (i != 10) {
            throw new RuntimeException("wrong value: " + i);
        }
        System.out.println("Success.");
    }
}