Example usage for org.objectweb.asm MethodVisitor visitEnd

List of usage examples for org.objectweb.asm MethodVisitor visitEnd

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Introduction

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

Prototype

public void visitEnd()

Source Link

Document

Visits the end of the method.

Usage

From source file:fr.insalyon.citi.golo.compiler.JavaBytecodeStructGenerator.java

License:Apache License

private void makeValuesMethod(ClassWriter classWriter, Struct struct) {
    String owner = struct.getPackageAndClass().toJVMType();
    MethodVisitor visitor = classWriter.visitMethod(ACC_PUBLIC, "values", "()Lgololang/Tuple;", null, null);
    visitor.visitCode();/*from   ww  w .ja  va2  s .co m*/
    loadInteger(visitor, struct.getPublicMembers().size());
    visitor.visitTypeInsn(ANEWARRAY, "java/lang/Object");
    int index = 0;
    for (String member : struct.getPublicMembers()) {
        visitor.visitInsn(DUP);
        loadInteger(visitor, index);
        visitor.visitVarInsn(ALOAD, 0);
        visitor.visitFieldInsn(GETFIELD, owner, member, "Ljava/lang/Object;");
        visitor.visitInsn(AASTORE);
        index = index + 1;
    }
    visitor.visitMethodInsn(INVOKESTATIC, "gololang/Tuple", "fromArray",
            "([Ljava/lang/Object;)Lgololang/Tuple;");
    visitor.visitInsn(ARETURN);
    visitor.visitMaxs(0, 0);
    visitor.visitEnd();
}

From source file:fr.insalyon.citi.golo.compiler.JavaBytecodeStructGenerator.java

License:Apache License

private void makeEquals(ClassWriter classWriter, Struct struct) {
    String owner = struct.getPackageAndClass().toJVMType();
    MethodVisitor visitor = classWriter.visitMethod(ACC_PUBLIC, "equals", "(Ljava/lang/Object;)Z", null, null);
    Label notFrozenLabel = new Label();
    Label falseLabel = new Label();
    Label sameTypeLabel = new Label();
    visitor.visitCode();//from  w w  w.  ja  va 2  s . c o  m
    visitor.visitVarInsn(ALOAD, 0);
    visitor.visitFieldInsn(GETFIELD, owner, $_frozen, "Z");
    visitor.visitJumpInsn(IFNE, notFrozenLabel);
    // super.equals()
    visitor.visitVarInsn(ALOAD, 0);
    visitor.visitVarInsn(ALOAD, 1);
    visitor.visitMethodInsn(INVOKESPECIAL, "java/lang/Object", "equals", "(Ljava/lang/Object;)Z");
    visitor.visitInsn(IRETURN);
    // The receiver is frozen
    visitor.visitLabel(notFrozenLabel);
    visitor.visitVarInsn(ALOAD, 1);
    visitor.visitTypeInsn(INSTANCEOF, owner);
    visitor.visitJumpInsn(IFNE, sameTypeLabel);
    visitor.visitJumpInsn(GOTO, falseLabel);
    // The argument is of the same type, too
    visitor.visitLabel(sameTypeLabel);
    visitor.visitVarInsn(ALOAD, 1);
    visitor.visitTypeInsn(CHECKCAST, owner);
    visitor.visitFieldInsn(GETFIELD, owner, $_frozen, "Z");
    visitor.visitJumpInsn(IFEQ, falseLabel);
    // The argument is not frozen
    for (String member : struct.getMembers()) {
        visitor.visitVarInsn(ALOAD, 0);
        visitor.visitFieldInsn(GETFIELD, owner, member, "Ljava/lang/Object;");
        visitor.visitVarInsn(ALOAD, 1);
        visitor.visitTypeInsn(CHECKCAST, owner);
        visitor.visitFieldInsn(GETFIELD, owner, member, "Ljava/lang/Object;");
        visitor.visitMethodInsn(INVOKESTATIC, "java/util/Objects", "equals",
                "(Ljava/lang/Object;Ljava/lang/Object;)Z");
        visitor.visitJumpInsn(IFEQ, falseLabel);
    }
    visitor.visitInsn(ICONST_1);
    visitor.visitInsn(IRETURN);
    // False
    visitor.visitLabel(falseLabel);
    visitor.visitInsn(ICONST_0);
    visitor.visitInsn(IRETURN);
    visitor.visitMaxs(0, 0);
    visitor.visitEnd();
}

From source file:fr.insalyon.citi.golo.compiler.JavaBytecodeStructGenerator.java

License:Apache License

private void makeHashCode(ClassWriter classWriter, Struct struct) {
    String owner = struct.getPackageAndClass().toJVMType();
    MethodVisitor visitor = classWriter.visitMethod(ACC_PUBLIC, "hashCode", "()I", null, null);
    Label notFrozenLabel = new Label();
    visitor.visitCode();/*from   w w w.  jav a 2  s .com*/
    visitor.visitVarInsn(ALOAD, 0);
    visitor.visitFieldInsn(GETFIELD, owner, $_frozen, "Z");
    visitor.visitJumpInsn(IFNE, notFrozenLabel);
    // super.hashCode()
    visitor.visitVarInsn(ALOAD, 0);
    visitor.visitMethodInsn(INVOKESPECIAL, "java/lang/Object", "hashCode", "()I");
    visitor.visitInsn(IRETURN);
    // The receiver is frozen
    visitor.visitLabel(notFrozenLabel);
    loadInteger(visitor, struct.getMembers().size());
    visitor.visitTypeInsn(ANEWARRAY, "java/lang/Object");
    int i = 0;
    for (String member : struct.getMembers()) {
        visitor.visitInsn(DUP);
        loadInteger(visitor, i);
        visitor.visitVarInsn(ALOAD, 0);
        visitor.visitFieldInsn(GETFIELD, owner, member, "Ljava/lang/Object;");
        visitor.visitInsn(AASTORE);
        i = i + 1;
    }
    visitor.visitMethodInsn(INVOKESTATIC, "java/util/Objects", "hash", "([Ljava/lang/Object;)I");
    visitor.visitInsn(IRETURN);
    visitor.visitMaxs(0, 0);
    visitor.visitEnd();
}

From source file:fr.insalyon.citi.golo.compiler.JavaBytecodeStructGenerator.java

License:Apache License

private void makeCopy(ClassWriter classWriter, Struct struct, boolean frozen) {
    String owner = struct.getPackageAndClass().toJVMType();
    String methodName = frozen ? "frozenCopy" : "copy";
    MethodVisitor visitor = classWriter.visitMethod(ACC_PUBLIC, methodName, "()Lgololang/GoloStruct;", null,
            null);//from  ww  w  . j a v a 2s. c o m
    visitor.visitCode();
    visitor.visitTypeInsn(NEW, owner);
    visitor.visitInsn(DUP);
    for (String member : struct.getMembers()) {
        visitor.visitVarInsn(ALOAD, 0);
        visitor.visitFieldInsn(GETFIELD, owner, member, "Ljava/lang/Object;");
    }
    visitor.visitMethodInsn(INVOKESPECIAL, owner, "<init>", allArgsConstructorSignature(struct));
    visitor.visitInsn(DUP);
    visitor.visitInsn(frozen ? ICONST_1 : ICONST_0);
    visitor.visitFieldInsn(PUTFIELD, owner, $_frozen, "Z");
    visitor.visitInsn(ARETURN);
    visitor.visitMaxs(0, 0);
    visitor.visitEnd();
}

From source file:fr.insalyon.citi.golo.compiler.JavaBytecodeStructGenerator.java

License:Apache License

private void makeToString(ClassWriter classWriter, Struct struct) {
    String owner = struct.getPackageAndClass().toJVMType();
    MethodVisitor visitor = classWriter.visitMethod(ACC_PUBLIC, "toString", "()Ljava/lang/String;", null, null);
    visitor.visitCode();/*from   w  w w  .j  a v  a2 s  .  c  om*/
    visitor.visitTypeInsn(NEW, "java/lang/StringBuilder");
    visitor.visitInsn(DUP);
    visitor.visitLdcInsn("struct " + struct.getPackageAndClass().className() + "{");
    visitor.visitMethodInsn(INVOKESPECIAL, "java/lang/StringBuilder", "<init>", "(Ljava/lang/String;)V");
    boolean first = true;
    for (String member : struct.getPublicMembers()) {
        visitor.visitInsn(DUP);
        visitor.visitLdcInsn((!first ? ", " : "") + member + "=");
        first = false;
        visitor.visitMethodInsn(INVOKEVIRTUAL, "java/lang/StringBuilder", "append",
                "(Ljava/lang/String;)Ljava/lang/StringBuilder;");
        visitor.visitInsn(DUP);
        visitor.visitVarInsn(ALOAD, 0);
        visitor.visitFieldInsn(GETFIELD, owner, member, "Ljava/lang/Object;");
        visitor.visitMethodInsn(INVOKEVIRTUAL, "java/lang/StringBuilder", "append",
                "(Ljava/lang/Object;)Ljava/lang/StringBuilder;");
    }
    visitor.visitLdcInsn("}");
    visitor.visitMethodInsn(INVOKEVIRTUAL, "java/lang/StringBuilder", "append",
            "(Ljava/lang/String;)Ljava/lang/StringBuilder;");
    visitor.visitMethodInsn(INVOKEVIRTUAL, "java/lang/StringBuilder", "toString", "()Ljava/lang/String;");
    visitor.visitInsn(ARETURN);
    visitor.visitMaxs(0, 0);
    visitor.visitEnd();
}

From source file:fr.insalyon.citi.golo.compiler.JavaBytecodeStructGenerator.java

License:Apache License

private void makeAllArgsConstructor(ClassWriter classWriter, Struct struct, String owner) {
    MethodVisitor visitor = classWriter.visitMethod(ACC_PUBLIC, "<init>", allArgsConstructorSignature(struct),
            null, null);//from   w  w w.  j  a v a 2s .co m
    visitor.visitCode();
    visitor.visitVarInsn(ALOAD, 0);
    visitor.visitMethodInsn(INVOKESPECIAL, "gololang/GoloStruct", "<init>", "()V");
    int arg = 1;
    for (String name : struct.getMembers()) {
        visitor.visitVarInsn(ALOAD, 0);
        visitor.visitVarInsn(ALOAD, arg);
        visitor.visitFieldInsn(PUTFIELD, owner, name, "Ljava/lang/Object;");
        arg = arg + 1;
    }
    initMembersField(struct, owner, visitor);
    visitor.visitVarInsn(ALOAD, 0);
    visitor.visitInsn(ICONST_0);
    visitor.visitFieldInsn(PUTFIELD, owner, $_frozen, "Z");
    visitor.visitInsn(RETURN);
    visitor.visitMaxs(0, 0);
    visitor.visitEnd();
}

From source file:fr.insalyon.citi.golo.compiler.JavaBytecodeStructGenerator.java

License:Apache License

private void makeImmutableFactory(ClassWriter classWriter, Struct struct) {
    String constructorDesc = allArgsConstructorSignature(struct);
    String desc = constructorDesc.substring(0, constructorDesc.length() - 1);
    String classType = struct.getPackageAndClass().toJVMType();
    desc = desc + "L" + classType + ";";
    MethodVisitor visitor = classWriter.visitMethod(ACC_PUBLIC | ACC_STATIC, IMMUTABLE_FACTORY_METHOD, desc,
            null, null);/*from w ww .  j a  va2 s . c  o m*/
    visitor.visitCode();
    visitor.visitTypeInsn(NEW, classType);
    visitor.visitInsn(DUP);
    int arg = 0;
    for (String name : struct.getMembers()) {
        visitor.visitVarInsn(ALOAD, arg);
        arg = arg + 1;
    }
    visitor.visitMethodInsn(INVOKESPECIAL, classType, "<init>", constructorDesc);
    visitor.visitInsn(DUP);
    visitor.visitInsn(ICONST_1);
    visitor.visitFieldInsn(PUTFIELD, classType, $_frozen, "Z");
    visitor.visitInsn(ARETURN);
    visitor.visitMaxs(0, 0);
    visitor.visitEnd();
}

From source file:fr.insalyon.citi.golo.compiler.JavaBytecodeStructGenerator.java

License:Apache License

private void makeNoArgsConstructor(ClassWriter classWriter, Struct struct) {
    String owner = struct.getPackageAndClass().toJVMType();
    MethodVisitor visitor = classWriter.visitMethod(ACC_PUBLIC, "<init>", "()V", null, null);
    visitor.visitCode();//from w w  w.j av a2  s . co m
    visitor.visitVarInsn(ALOAD, 0);
    visitor.visitMethodInsn(INVOKESPECIAL, "gololang/GoloStruct", "<init>", "()V");
    visitor.visitVarInsn(ALOAD, 0);
    visitor.visitInsn(ICONST_0);
    visitor.visitFieldInsn(PUTFIELD, struct.getPackageAndClass().toJVMType(), $_frozen, "Z");
    initMembersField(struct, owner, visitor);
    visitor.visitInsn(RETURN);
    visitor.visitMaxs(0, 0);
    visitor.visitEnd();
}

From source file:fr.insalyon.citi.golo.compiler.JavaBytecodeStructGenerator.java

License:Apache License

private void makeFrozenGetter(ClassWriter classWriter, String owner) {
    MethodVisitor visitor = classWriter.visitMethod(ACC_PUBLIC, "isFrozen", "()Z", null, null);
    visitor.visitCode();//from w ww . j  a  va  2s  . c om
    visitor.visitVarInsn(ALOAD, 0);
    visitor.visitFieldInsn(GETFIELD, owner, $_frozen, "Z");
    visitor.visitInsn(IRETURN);
    visitor.visitMaxs(0, 0);
    visitor.visitEnd();
}

From source file:fr.insalyon.citi.golo.compiler.JavaBytecodeStructGenerator.java

License:Apache License

private void makeSetter(ClassWriter classWriter, String owner, String name) {
    int accessFlag = name.startsWith("_") ? ACC_PRIVATE : ACC_PUBLIC;
    MethodVisitor visitor = classWriter.visitMethod(accessFlag, name,
            "(Ljava/lang/Object;)Lgololang/GoloStruct;", null, null);
    visitor.visitCode();//from w  w w. j  av a2s .  c  o m
    visitor.visitVarInsn(ALOAD, 0);
    visitor.visitFieldInsn(GETFIELD, owner, $_frozen, "Z");
    Label setLabel = new Label();
    visitor.visitJumpInsn(IFEQ, setLabel);
    visitor.visitTypeInsn(NEW, "java/lang/IllegalStateException");
    visitor.visitInsn(DUP);
    visitor.visitLdcInsn("The struct instance is frozen");
    visitor.visitMethodInsn(INVOKESPECIAL, "java/lang/IllegalStateException", "<init>",
            "(Ljava/lang/String;)V");
    visitor.visitInsn(ATHROW);
    visitor.visitLabel(setLabel);
    visitor.visitVarInsn(ALOAD, 0);
    visitor.visitVarInsn(ALOAD, 1);
    visitor.visitFieldInsn(PUTFIELD, owner, name, "Ljava/lang/Object;");
    visitor.visitVarInsn(ALOAD, 0);
    visitor.visitInsn(ARETURN);
    visitor.visitMaxs(0, 0);
    visitor.visitEnd();
}