Example usage for org.objectweb.asm Opcodes ICONST_0

Introduction

In this page you can find the example usage for org.objectweb.asm Opcodes ICONST_0.

Prototype

int ICONST_0

To view the source code for org.objectweb.asm Opcodes ICONST_0.

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Usage

From source file:org.jacoco.core.internal.instr.ProbeInserterTest.java

License:Open Source License

@Test
public void testVariableStatic() {
    ProbeInserter pi = new ProbeInserter(Opcodes.ACC_STATIC, "()V", actualVisitor, arrayStrategy);
    pi.insertProbe(0);/*www.ja  v a 2 s  . c  o  m*/

    expectedVisitor.visitVarInsn(Opcodes.ALOAD, 0);
    expectedVisitor.visitInsn(Opcodes.ICONST_0);
    expectedVisitor.visitInsn(Opcodes.ICONST_1);
    expectedVisitor.visitInsn(Opcodes.BASTORE);
}

---

From source file:org.jacoco.core.internal.instr.ProbeInserterTest.java

License:Open Source License

@Test
public void testVariableNonStatic() {
    ProbeInserter pi = new ProbeInserter(0, "()V", actualVisitor, arrayStrategy);
    pi.insertProbe(0);//ww  w  .  j  a v a2 s .  co  m

    expectedVisitor.visitVarInsn(Opcodes.ALOAD, 1);
    expectedVisitor.visitInsn(Opcodes.ICONST_0);
    expectedVisitor.visitInsn(Opcodes.ICONST_1);
    expectedVisitor.visitInsn(Opcodes.BASTORE);
}

---

From source file:org.jacoco.core.internal.instr.ProbeInserterTest.java

License:Open Source License

@Test
public void testVariableNonStatic_IZObject() {
    ProbeInserter pi = new ProbeInserter(0, "(IZLjava/lang/Object;)V", actualVisitor, arrayStrategy);
    pi.insertProbe(0);// w  ww . j  a  v a2s. com

    expectedVisitor.visitVarInsn(Opcodes.ALOAD, 4);
    expectedVisitor.visitInsn(Opcodes.ICONST_0);
    expectedVisitor.visitInsn(Opcodes.ICONST_1);
    expectedVisitor.visitInsn(Opcodes.BASTORE);
}

---

From source file:org.jacoco.core.internal.instr.ProbeInserterTest.java

License:Open Source License

@Test
public void testVariableNonStatic_JD() {
    ProbeInserter pi = new ProbeInserter(0, "(JD)V", actualVisitor, arrayStrategy);
    pi.insertProbe(0);//  w  ww . java  2 s .c om

    expectedVisitor.visitVarInsn(Opcodes.ALOAD, 5);
    expectedVisitor.visitInsn(Opcodes.ICONST_0);
    expectedVisitor.visitInsn(Opcodes.ICONST_1);
    expectedVisitor.visitInsn(Opcodes.BASTORE);
}

---

From source file:org.jacoco.core.runtime.AbstractRuntimeData.java

License:Open Source License

/**
 * Generates code that creates the argument array for the
 * {@link #getProbes(Object[])} method. The array instance is left on the
 * operand stack. The generated code requires a stack size of 5.
 * /*from  ww  w  .  j a v  a2s. co m*/
 * @param classid
 *            class identifier
 * @param classname
 *            VM class name
 * @param probecount
 *            probe count for this class
 * @param mv
 *            visitor to emit generated code
 */
public static void generateArgumentArray(final long classid, final String classname, final int probecount,
        final MethodVisitor mv) {
    mv.visitInsn(Opcodes.ICONST_3);
    mv.visitTypeInsn(Opcodes.ANEWARRAY, "java/lang/Object");

    // Class Id:
    mv.visitInsn(Opcodes.DUP);
    mv.visitInsn(Opcodes.ICONST_0);
    mv.visitLdcInsn(Long.valueOf(classid));
    mv.visitMethodInsn(Opcodes.INVOKESTATIC, "java/lang/Long", "valueOf", "(J)Ljava/lang/Long;", false);
    mv.visitInsn(Opcodes.AASTORE);

    // Class Name:
    mv.visitInsn(Opcodes.DUP);
    mv.visitInsn(Opcodes.ICONST_1);
    mv.visitLdcInsn(classname);
    mv.visitInsn(Opcodes.AASTORE);

    // Probe Count:
    mv.visitInsn(Opcodes.DUP);
    mv.visitInsn(Opcodes.ICONST_2);
    InstrSupport.push(mv, probecount);
    mv.visitMethodInsn(Opcodes.INVOKESTATIC, "java/lang/Integer", "valueOf", "(I)Ljava/lang/Integer;", false);
    mv.visitInsn(Opcodes.AASTORE);
}

---

From source file:org.jacoco.core.runtime.AbstractRuntimeData.java

License:Open Source License

/**
 * Generates the code that calls a {@link ControlFlowRuntimeData} instance through the
 * JRE API method {@link Object#equals(Object)}. The code pops a
 * {@link Object} instance from the stack and pushes the probe array of type
 * <code>boolean[]</code> on the operand stack. The generated code requires
 * a stack size of 6.//from w ww.  j  a  v  a2 s . com
 * 
 * @param classid
 *            class identifier
 * @param classname
 *            VM class name
 * @param probecount
 *            probe count for this class
 * @param mv
 *            visitor to emit generated code
 */
public static void generateAccessCall(final long classid, final String classname, final int probecount,
        final MethodVisitor mv) {
    // stack[0]: Ljava/lang/Object;

    generateArgumentArray(classid, classname, probecount, mv);

    // stack[1]: [Ljava/lang/Object;
    // stack[0]: Ljava/lang/Object;

    mv.visitInsn(Opcodes.DUP_X1);

    // stack[2]: [Ljava/lang/Object;
    // stack[1]: Ljava/lang/Object;
    // stack[0]: [Ljava/lang/Object;

    mv.visitMethodInsn(Opcodes.INVOKEVIRTUAL, "java/lang/Object", "equals", "(Ljava/lang/Object;)Z", false);
    mv.visitInsn(Opcodes.POP);

    // stack[0]: [Ljava/lang/Object;

    mv.visitInsn(Opcodes.ICONST_0);
    mv.visitInsn(Opcodes.AALOAD);

    // stack[0]: [Z

    mv.visitTypeInsn(Opcodes.CHECKCAST, InstrSupport.DATAFIELD_DESC);
}

---

From source file:org.jacoco.core.runtime.ExecutionDataAccess.java

License:Open Source License

/**
 * Generates code that creates the argument array for the
 * <code>getExecutionData()</code> method. The array instance is left on the
 * operand stack. The generated code requires a stack size of 5.
 * //from w ww  .  j ava2  s .c  om
 * @param classid
 *            class identifier
 * @param classname
 *            VM class name
 * @param probecount
 *            probe count for this class
 * @param mv
 *            visitor to emit generated code
 */
public static void generateArgumentArray(final long classid, final String classname, final int probecount,
        final MethodVisitor mv) {
    mv.visitInsn(Opcodes.ICONST_3);
    mv.visitTypeInsn(Opcodes.ANEWARRAY, "java/lang/Object");

    // Class Id:
    mv.visitInsn(Opcodes.DUP);
    mv.visitInsn(Opcodes.ICONST_0);
    mv.visitLdcInsn(Long.valueOf(classid));
    mv.visitMethodInsn(Opcodes.INVOKESTATIC, "java/lang/Long", "valueOf", "(J)Ljava/lang/Long;");
    mv.visitInsn(Opcodes.AASTORE);

    // Class Name:
    mv.visitInsn(Opcodes.DUP);
    mv.visitInsn(Opcodes.ICONST_1);
    mv.visitLdcInsn(classname);
    mv.visitInsn(Opcodes.AASTORE);

    // Probe Count:
    mv.visitInsn(Opcodes.DUP);
    mv.visitInsn(Opcodes.ICONST_2);
    InstrSupport.push(mv, probecount);
    mv.visitMethodInsn(Opcodes.INVOKESTATIC, "java/lang/Integer", "valueOf", "(I)Ljava/lang/Integer;");
    mv.visitInsn(Opcodes.AASTORE);
}

---

From source file:org.jacoco.core.runtime.ExecutionDataAccess.java

License:Open Source License

/**
 * Generates the code that calls the runtime data access through the JRE API
 * method {@link Object#equals(Object)}. The code pops a {@link Object}
 * instance from the stack and pushes the probe array of type
 * <code>boolean[]</code> on the operand stack. The generated code requires
 * a stack size of 6.//  w  w  w.j  a va 2 s  .  c  o m
 * 
 * @param classid
 * @param classname
 * @param probecount
 * @param mv
 */
public static void generateAccessCall(final long classid, final String classname, final int probecount,
        final MethodVisitor mv) {
    // stack[0]: Ljava/lang/Object;

    generateArgumentArray(classid, classname, probecount, mv);

    // stack[1]: [Ljava/lang/Object;
    // stack[0]: Ljava/lang/Object;

    mv.visitInsn(Opcodes.DUP_X1);

    // stack[2]: [Ljava/lang/Object;
    // stack[1]: Ljava/lang/Object;
    // stack[0]: [Ljava/lang/Object;

    mv.visitMethodInsn(Opcodes.INVOKEVIRTUAL, "java/lang/Object", "equals", "(Ljava/lang/Object;)Z");
    mv.visitInsn(Opcodes.POP);

    // stack[0]: [Ljava/lang/Object;

    mv.visitInsn(Opcodes.ICONST_0);
    mv.visitInsn(Opcodes.AALOAD);

    // stack[0]: [Z

    mv.visitTypeInsn(Opcodes.CHECKCAST, InstrSupport.DATAFIELD_DESC);
}

---

From source file:org.jacoco.core.runtime.LoggerRuntime.java

License:Open Source License

public int generateDataAccessor(final long classid, final String classname, final int probecount,
        final MethodVisitor mv) {

    // The data accessor performs the following steps:
    ////from   w w w  . ja  v  a  2 s  . c  o  m
    // final Object[] args = new Object[3];
    // args[0] = Long.valueOf(classid);
    // args[1] = classname;
    // args[2] = Integer.valueOf(probecount);
    // Logger.getLogger(CHANNEL).log(Level.INFO, key, args);
    // final byte[] probedata = (byte[]) args[0];
    //
    // Note that local variable 'args' is used at two places. As were not
    // allowed to allocate local variables we have to keep this value with
    // DUP and SWAP operations on the operand stack.

    // 1. Create parameter array:

    RuntimeData.generateArgumentArray(classid, classname, probecount, mv);

    // Stack[0]: [Ljava/lang/Object;

    mv.visitInsn(Opcodes.DUP);

    // Stack[1]: [Ljava/lang/Object;
    // Stack[0]: [Ljava/lang/Object;

    // 2. Call Logger:

    mv.visitLdcInsn(CHANNEL);
    mv.visitMethodInsn(Opcodes.INVOKESTATIC, "java/util/logging/Logger", "getLogger",
            "(Ljava/lang/String;)Ljava/util/logging/Logger;");

    // Stack[2]: Ljava/util/logging/Logger;
    // Stack[1]: [Ljava/lang/Object;
    // Stack[0]: [Ljava/lang/Object;

    mv.visitInsn(Opcodes.SWAP);

    // Stack[2]: [Ljava/lang/Object;
    // Stack[1]: Ljava/util/logging/Logger;
    // Stack[0]: [Ljava/lang/Object;

    mv.visitFieldInsn(Opcodes.GETSTATIC, "java/util/logging/Level", "INFO", "Ljava/util/logging/Level;");

    // Stack[3]: Ljava/util/logging/Level;
    // Stack[2]: [Ljava/lang/Object;
    // Stack[1]: Ljava/util/logging/Logger;
    // Stack[0]: [Ljava/lang/Object;

    mv.visitInsn(Opcodes.SWAP);

    // Stack[3]: [Ljava/lang/Object;
    // Stack[2]: Ljava/util/logging/Level;
    // Stack[1]: Ljava/util/logging/Logger;
    // Stack[0]: [Ljava/lang/Object;

    mv.visitLdcInsn(key);

    // Stack[4]: Ljava/lang/String;
    // Stack[3]: [Ljava/lang/Object;
    // Stack[2]: Ljava/util/logging/Level;
    // Stack[1]: Ljava/util/logging/Logger;
    // Stack[0]: [Ljava/lang/Object;

    mv.visitInsn(Opcodes.SWAP);

    // Stack[4]: [Ljava/lang/Object;
    // Stack[3]: Ljava/lang/String;
    // Stack[2]: Ljava/util/logging/Level;
    // Stack[1]: Ljava/util/logging/Logger;
    // Stack[0]: [Ljava/lang/Object;

    mv.visitMethodInsn(Opcodes.INVOKEVIRTUAL, "java/util/logging/Logger", "log",
            "(Ljava/util/logging/Level;Ljava/lang/String;[Ljava/lang/Object;)V");

    // Stack[0]: [Ljava/lang/Object;

    // 3. Load data structure from parameter array:

    mv.visitInsn(Opcodes.ICONST_0);
    mv.visitInsn(Opcodes.AALOAD);
    mv.visitTypeInsn(Opcodes.CHECKCAST, InstrSupport.DATAFIELD_DESC);

    // Stack[0]: [Z

    return 5; // Maximum local stack size is 5
}

---

From source file:org.jacoco.core.runtime.URLStreamHandlerRuntime.java

License:Open Source License

public int generateDataAccessor(final long classid, final String classname, final int probecount,
        final MethodVisitor mv) {

    // The data accessor performs the following steps:
    ////from   w  ww  . j  a  va 2s  . c o  m
    // final URL url = new URL(protocol, null, "");
    // final URLConnection connection = url.openConnection();
    // final Object[] args = new Object[3];
    // args[0] = Long.valueOf(classid);
    // args[1] = classname;
    // args[2] = Integer.valueOf(probecount);
    // connection.equals(args);
    // final byte[] probedata = (byte[]) args[0];

    RuntimeData.generateArgumentArray(classid, classname, probecount, mv);
    mv.visitInsn(Opcodes.DUP);

    // Stack[1]: [Ljava/lang/Object;
    // Stack[0]: [Ljava/lang/Object;

    mv.visitTypeInsn(Opcodes.NEW, "java/net/URL");
    mv.visitInsn(Opcodes.DUP);
    mv.visitLdcInsn(protocol);
    mv.visitInsn(Opcodes.ACONST_NULL);
    mv.visitLdcInsn("");
    mv.visitMethodInsn(Opcodes.INVOKESPECIAL, "java/net/URL", "<init>",
            "(Ljava/lang/String;Ljava/lang/String;Ljava/lang/String;)V");

    // Stack[2]: [Ljava/net/URL;
    // Stack[1]: [Ljava/lang/Object;
    // Stack[0]: [Ljava/lang/Object;

    mv.visitMethodInsn(Opcodes.INVOKEVIRTUAL, "java/net/URL", "openConnection", "()Ljava/net/URLConnection;");

    // Stack[2]: [Ljava/net/URLConnection;
    // Stack[1]: [Ljava/lang/Object;
    // Stack[0]: [Ljava/lang/Object;

    mv.visitInsn(Opcodes.SWAP);

    // Stack[2]: [Ljava/lang/Object;
    // Stack[1]: [Ljava/net/URLConnection;
    // Stack[0]: [Ljava/lang/Object;

    mv.visitMethodInsn(Opcodes.INVOKEVIRTUAL, "java/lang/Object", "equals", "(Ljava/lang/Object;)Z");

    // Stack[1]: Z;
    // Stack[0]: [Ljava/lang/Object;

    mv.visitInsn(Opcodes.POP);

    // Stack[0]: [Ljava/lang/Object;

    mv.visitInsn(Opcodes.ICONST_0);
    mv.visitInsn(Opcodes.AALOAD);
    mv.visitTypeInsn(Opcodes.CHECKCAST, InstrSupport.DATAFIELD_DESC);

    return 7;
}

---

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