Example usage for org.objectweb.asm MethodVisitor visitInsn

Introduction

In this page you can find the example usage for org.objectweb.asm MethodVisitor visitInsn.

Prototype

public void visitInsn(final int opcode) 

Source Link

Document

Visits a zero operand instruction.

Usage

From source file:boilerplate.processor.adapters.EqualsAdapter.java

License:Open Source License

private void addEqualsMethod(List<FieldInfo> fields) {
    // CODE: public boolean equals(Object obj) {
    MethodVisitor mv = cv.visitMethod(ACC_PUBLIC, "equals", "(Ljava/lang/Object;)Z", null, null);
    mv.visitCode();//ww w  . ja v  a  2s .  co  m

    // CODE: if (this == obj) return true;
    mv.visitVarInsn(ALOAD, 0);
    mv.visitVarInsn(ALOAD, 1);
    Label l0 = new Label();
    mv.visitJumpInsn(IF_ACMPNE, l0);
    mv.visitInsn(ICONST_1);
    mv.visitInsn(IRETURN);
    mv.visitLabel(l0);
    mv.visitFrame(F_SAME, 0, null, 0, null);

    // CODE: if (!(obj instanceof Foo)) return false;
    mv.visitVarInsn(ALOAD, 1);
    mv.visitTypeInsn(INSTANCEOF, typeInfo.type);
    Label l1 = new Label();
    mv.visitJumpInsn(IFNE, l1);
    mv.visitInsn(ICONST_0);
    mv.visitInsn(IRETURN);
    mv.visitLabel(l1);
    mv.visitFrame(F_SAME, 0, null, 0, null);

    // CODE: final Foo other = (Foo) obj;
    mv.visitVarInsn(ALOAD, 1);
    mv.visitTypeInsn(CHECKCAST, typeInfo.type);
    mv.visitVarInsn(ASTORE, 2);

    for (FieldInfo info : fields) {
        addTest(mv, info);
    }

    // CODE: return true; }
    mv.visitInsn(ICONST_1);
    mv.visitInsn(IRETURN);
    mv.visitMaxs(1, 2);
    mv.visitEnd();
}

---

From source file:boilerplate.processor.adapters.EqualsAdapter.java

License:Open Source License

private void addHashCodeMethod(List<FieldInfo> fields) {
    // CODE: public int hashCode() {
    MethodVisitor mv = cv.visitMethod(ACC_PUBLIC, "hashCode", "()I", null, null);
    mv.visitCode();//from   w w  w.  ja v a  2 s  .c  om

    // CODE: final int prime = 31;
    mv.visitIntInsn(BIPUSH, 31);
    mv.visitVarInsn(ISTORE, 1);
    mv.visitInsn(ICONST_1);

    // CODE: int result = 1;
    mv.visitVarInsn(ISTORE, 2);

    for (FieldInfo fieldInfo : fields) {
        addCalculation(mv, fieldInfo);
    }

    // CODE: return result; }
    mv.visitVarInsn(ILOAD, 2);
    mv.visitInsn(IRETURN);
    mv.visitMaxs(1, 3);
    mv.visitEnd();
}

---

From source file:boilerplate.processor.adapters.ToStringAdapter.java

License:Open Source License

private void addMethod() {
    List<String> fieldNames = new ArrayList<String>(typeInfo.fields.size());
    Map<String, FieldInfo> fields = new HashMap<String, FieldInfo>(typeInfo.fields.size());
    boolean hasAnnotatedFields = typeInfo.hasAnnotatedFields();
    for (FieldInfo info : typeInfo.fields) {
        if (!(hasAnnotatedFields ^ info.mark == Mark.INCLUDE)) {
            fieldNames.add(info.name);// w ww .j av a2  s  .  c  o  m
            fields.put(info.name, info);
        }
    }
    Collections.sort(fieldNames);

    MethodVisitor mv = cv.visitMethod(ACC_PUBLIC, "toString", "()Ljava/lang/String;", null, null);
    mv.visitCode();
    mv.visitTypeInsn(NEW, "java/lang/StringBuilder");
    mv.visitInsn(DUP);
    mv.visitMethodInsn(INVOKESPECIAL, "java/lang/StringBuilder", "<init>", "()V");
    mv.visitVarInsn(ASTORE, 1);
    for (String name : fieldNames) {
        FieldInfo info = fields.get(name);
        addField(mv, info);
    }
    mv.visitVarInsn(ALOAD, 1);
    mv.visitMethodInsn(INVOKEVIRTUAL, "java/lang/StringBuilder", "toString", "()Ljava/lang/String;");
    mv.visitInsn(ARETURN);
    mv.visitMaxs(4, 2);
    mv.visitEnd();
}

---

From source file:br.ufpr.gres.core.operators.insn_components.InsnSubstitution.java

License:Apache License

@Override
public void apply(MethodVisitor mv) {
    mv.visitInsn(this.replacementOpcode);
}

---

From source file:br.usp.each.saeg.badua.core.internal.instr.ClassInstrumenter.java

License:Open Source License

@Override
public void visitEnd() {
    // not instrument interfaces or
    // classes with probe count equals to zero
    if (interfaceType || classProbeCount == 0) {
        super.visitEnd();
        return;/*w  w  w.  j a  v  a  2s. c om*/
    }

    final FieldVisitor fv = cv.visitField(InstrSupport.DATAFIELD_ACC, InstrSupport.DATAFIELD_NAME,
            InstrSupport.DATAFIELD_DESC, null, null);
    fv.visitEnd();

    final MethodVisitor mv = cv.visitMethod(InstrSupport.DATAMETHOD_ACC, InstrSupport.DATAMETHOD_NAME,
            InstrSupport.DATAMETHOD_DESC, null, null);
    mv.visitCode();

    // Load the value of the static data field:
    mv.visitFieldInsn(Opcodes.GETSTATIC, className, InstrSupport.DATAFIELD_NAME, InstrSupport.DATAFIELD_DESC);
    mv.visitInsn(Opcodes.DUP);

    // Stack[1]: [J
    // Stack[0]: [J

    // Skip initialization when we already have a data array:
    final Label alreadyInitialized = new Label();
    mv.visitJumpInsn(Opcodes.IFNONNULL, alreadyInitialized);

    // Stack[0]: [J

    mv.visitInsn(Opcodes.POP);
    mv.visitLdcInsn(classId);
    InstrSupport.push(mv, classProbeCount);
    mv.visitMethodInsn(Opcodes.INVOKESTATIC, InstrSupport.RUNTIME_OWNER, InstrSupport.RUNTIME_NAME,
            InstrSupport.RUNTIME_DESC, false);

    // Stack[0]: [J

    mv.visitInsn(Opcodes.DUP);

    // Stack[1]: [J
    // Stack[0]: [J

    mv.visitFieldInsn(Opcodes.PUTSTATIC, className, InstrSupport.DATAFIELD_NAME, InstrSupport.DATAFIELD_DESC);

    // Stack[0]: [J

    if (withFrames) {
        mv.visitFrame(Opcodes.F_NEW, 0, new Object[] {}, 1, new Object[] { InstrSupport.DATAFIELD_DESC });
    }
    mv.visitLabel(alreadyInitialized);
    mv.visitInsn(Opcodes.ARETURN);

    mv.visitMaxs(3, 0);
    mv.visitEnd();

    super.visitEnd();
}

---

From source file:br.usp.each.saeg.badua.core.internal.instr.InstrSupport.java

License:Open Source License

/**
 * Generates the instruction to push the given int value on the stack.
 * Implementation taken from/*from   w  ww.  jav a  2 s . c  om*/
 * {@link org.objectweb.asm.commons.GeneratorAdapter#push(int)}.
 *
 * @param mv
 *            visitor to emit the instruction
 * @param value
 *            the value to be pushed on the stack.
 */
public static void push(final MethodVisitor mv, final int value) {
    if (value >= -1 && value <= 5) {
        mv.visitInsn(Opcodes.ICONST_0 + value);
    } else if (value >= Byte.MIN_VALUE && value <= Byte.MAX_VALUE) {
        mv.visitIntInsn(Opcodes.BIPUSH, value);
    } else if (value >= Short.MIN_VALUE && value <= Short.MAX_VALUE) {
        mv.visitIntInsn(Opcodes.SIPUSH, value);
    } else {
        mv.visitLdcInsn(Integer.valueOf(value));
    }
}

---

From source file:br.usp.each.saeg.badua.core.internal.instr.InstrSupport.java

License:Open Source License

public static void swap(final MethodVisitor mv, final Type stackTop, final Type belowTop) {
    if (stackTop.getSize() == 1) {
        if (belowTop.getSize() == 1) {
            // Top = 1, below = 1
            mv.visitInsn(Opcodes.SWAP);
        } else {// w w  w  .  j a va  2s. c o  m
            // Top = 1, below = 2
            mv.visitInsn(Opcodes.DUP_X2);
            mv.visitInsn(Opcodes.POP);
        }
    } else {
        if (belowTop.getSize() == 1) {
            // Top = 2, below = 1
            mv.visitInsn(Opcodes.DUP2_X1);
        } else {
            // Top = 2, below = 2
            mv.visitInsn(Opcodes.DUP2_X2);
        }
        mv.visitInsn(Opcodes.POP2);
    }
}

---

From source file:br.usp.each.saeg.badua.core.internal.instr.IntegerInitProbe.java

License:Open Source License

@Override
public void accept(final MethodVisitor mv) {
    mv.visitInsn(Opcodes.ICONST_0);
    mv.visitVarInsn(Opcodes.ISTORE, vCovered);
    mv.visitInsn(Opcodes.ICONST_0);//from  w  w  w  .  ja v  a 2  s  . com
    mv.visitVarInsn(Opcodes.ISTORE, vAlive);
    mv.visitInsn(Opcodes.ICONST_M1);
    mv.visitVarInsn(Opcodes.ISTORE, vSleepy);
}

---

From source file:br.usp.each.saeg.badua.core.internal.instr.IntegerProbe.java

License:Open Source License

@Override
public void accept(final MethodVisitor mv) {

    // update covered
    if (potcov != 0) {
        mv.visitVarInsn(Opcodes.ILOAD, vAlive);

        if (!singlePredecessor && potcovpuse != 0) {
            mv.visitVarInsn(Opcodes.ILOAD, vSleepy);
            mv.visitInsn(Opcodes.IAND);
        }//from w  ww . j a v  a  2  s  .co  m

        InstrSupport.push(mv, (int) potcov);
        mv.visitInsn(Opcodes.IAND);
        mv.visitVarInsn(Opcodes.ILOAD, vCovered);
        mv.visitInsn(Opcodes.IOR);
        mv.visitVarInsn(Opcodes.ISTORE, vCovered);
    }

    // update alive
    if (disabled != 0) {
        InstrSupport.push(mv, ~(int) disabled);
        mv.visitVarInsn(Opcodes.ILOAD, vAlive);
        mv.visitInsn(Opcodes.IAND);
    }
    if (born != 0) {
        if (disabled == 0) {
            mv.visitVarInsn(Opcodes.ILOAD, vAlive);
        }
        InstrSupport.push(mv, (int) born);
        mv.visitInsn(Opcodes.IOR);
    }
    if (disabled != 0 || born != 0) {
        mv.visitVarInsn(Opcodes.ISTORE, vAlive);
    }

    // update sleepy
    InstrSupport.push(mv, ~(int) sleepy);
    mv.visitVarInsn(Opcodes.ISTORE, vSleepy);

}

---

From source file:br.usp.each.saeg.badua.core.internal.instr.IntegerUpdateProbe.java

License:Open Source License

@Override
public void accept(final MethodVisitor mv) {
    mv.visitVarInsn(Opcodes.ILOAD, vCovered);
    mv.visitInsn(Opcodes.I2L);
    mv.visitMethodInsn(Opcodes.INVOKESTATIC, owner, InstrSupport.DATAMETHOD_NAME, InstrSupport.DATAMETHOD_DESC,
            false);/*from   w  ww .  j a  va  2 s  .c o m*/
    InstrSupport.push(mv, index);
    mv.visitInsn(Opcodes.DUP2_X2);
    mv.visitInsn(Opcodes.LALOAD);
    mv.visitInsn(Opcodes.LOR);
    mv.visitInsn(Opcodes.LASTORE);
}

---

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