ImplicitActionsConverterTest.java

/*
 * Copyright (C) 2009-2011 Mathias Doenitz
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 * http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

package com.github.fge.grappa.transform.process;

import com.google.common.collect.ImmutableList;
import com.github.fge.grappa.transform.TestParser;
import org.testng.annotations.BeforeClass;
import org.testng.annotations.Test;

import java.io.IOException;
import java.util.List;

import static com.github.fge.grappa.transform.AsmTestUtils.assertTraceDumpEquality;

public class ImplicitActionsConverterTest extends TransformationTest {

    private final List<RuleMethodProcessor> processors = ImmutableList.of(
            new UnusedLabelsRemover(),
            new ReturnInstructionUnifier(),
            new InstructionGraphCreator(),
            new ImplicitActionsConverter()
    );

    @BeforeClass
    public void setup() throws IOException {
        setup(TestParser.class);
    }

    @SuppressWarnings("unchecked")
    @Test
    public void testReturnInstructionUnification() throws Exception {
        assertTraceDumpEquality(processMethod("RuleWithIndirectImplicitAction", processors), "" +
                "    ALOAD 0\n" +
                "    BIPUSH 97\n" +
                "    INVOKESTATIC java/lang/Character.valueOf (C)Ljava/lang/Character;\n" +
                "    BIPUSH 98\n" +
                "    INVOKESTATIC java/lang/Character.valueOf (C)Ljava/lang/Character;\n" +
                "    ICONST_1\n" +
                "    ANEWARRAY java/lang/Object\n" +
                "    DUP\n" +
                "    ICONST_0\n" +
                "    ALOAD 0\n" +
                "    INVOKEVIRTUAL com/github/fge/grappa/transform/TestParser.action ()Z\n" +
                "    IFNE L0\n" +
                "    ALOAD 0\n" +
                "    GETFIELD com/github/fge/grappa/transform/TestParser.integer : I\n" +
                "    ICONST_5\n" +
                "    IF_ICMPNE L1\n" +
                "   L0\n" +
                "    ICONST_1\n" +
                "    GOTO L2\n" +
                "   L1\n" +
                "    ICONST_0\n" +
                "   L2\n" +
                "    INVOKESTATIC com/github/fge/grappa/parsers/BaseParser.ACTION (Z)Lcom/github/fge/grappa/rules/Action;\n" +
                "    AASTORE\n" +
                "    INVOKEVIRTUAL com/github/fge/grappa/transform/TestParser.sequence (Ljava/lang/Object;Ljava/lang/Object;[Ljava/lang/Object;)Lcom/github/fge/grappa/rules/Rule;\n" +
                "    ARETURN\n");

        assertTraceDumpEquality(processMethod("RuleWithDirectImplicitAction", processors), "" +
                "    ALOAD 0\n" +
                "    BIPUSH 97\n" +
                "    INVOKESTATIC java/lang/Character.valueOf (C)Ljava/lang/Character;\n" +
                "    ALOAD 0\n" +
                "    GETFIELD com/github/fge/grappa/transform/TestParser.integer : I\n" +
                "    IFNE L0\n" +
                "    ICONST_1\n" +
                "    GOTO L1\n" +
                "   L0\n" +
                "    ICONST_0\n" +
                "   L1\n" +
                "    INVOKESTATIC com/github/fge/grappa/parsers/BaseParser.ACTION (Z)Lcom/github/fge/grappa/rules/Action;\n" +
                "    ICONST_2\n" +
                "    ANEWARRAY java/lang/Object\n" +
                "    DUP\n" +
                "    ICONST_0\n" +
                "    BIPUSH 98\n" +
                "    INVOKESTATIC java/lang/Character.valueOf (C)Ljava/lang/Character;\n" +
                "    AASTORE\n" +
                "    DUP\n" +
                "    ICONST_1\n" +
                "    BIPUSH 99\n" +
                "    INVOKESTATIC java/lang/Character.valueOf (C)Ljava/lang/Character;\n" +
                "    AASTORE\n" +
                "    INVOKEVIRTUAL com/github/fge/grappa/transform/TestParser.sequence (Ljava/lang/Object;Ljava/lang/Object;[Ljava/lang/Object;)Lcom/github/fge/grappa/rules/Rule;\n" +
                "    ARETURN\n");
    }

}