Examples with MethodVisitor org.objectweb.asm.MethodVisitor used on opensource projects

Example 51 with MethodVisitor

use of org.objectweb.asm.MethodVisitor in project groovy by apache.

the class AsmClassGenerator method storeThisInstanceField.

private void storeThisInstanceField(FieldExpression expression) {
    MethodVisitor mv = controller.getMethodVisitor();
    FieldNode field = expression.getField();
    boolean setReferenceFromReference = field.isHolder() && expression.isUseReferenceDirectly();
    String ownerName = (field.getOwner().equals(controller.getClassNode())) ? controller.getInternalClassName() : BytecodeHelper.getClassInternalName(field.getOwner());
    OperandStack operandStack = controller.getOperandStack();
    if (setReferenceFromReference) {
        // rhs is ready to use reference, just put it in the field
        mv.visitVarInsn(ALOAD, 0);
        operandStack.push(controller.getClassNode());
        operandStack.swap();
        mv.visitFieldInsn(PUTFIELD, ownerName, field.getName(), BytecodeHelper.getTypeDescription(field.getType()));
    } else if (field.isHolder()) {
        // rhs is normal value, set the value in the Reference
        operandStack.doGroovyCast(field.getOriginType());
        operandStack.box();
        mv.visitVarInsn(ALOAD, 0);
        mv.visitFieldInsn(GETFIELD, ownerName, expression.getFieldName(), BytecodeHelper.getTypeDescription(field.getType()));
        mv.visitInsn(SWAP);
        mv.visitMethodInsn(INVOKEVIRTUAL, "groovy/lang/Reference", "set", "(Ljava/lang/Object;)V", false);
    } else {
        // rhs is normal value, set normal value
        operandStack.doGroovyCast(field.getOriginType());
        mv.visitVarInsn(ALOAD, 0);
        operandStack.push(controller.getClassNode());
        operandStack.swap();
        mv.visitFieldInsn(PUTFIELD, ownerName, field.getName(), BytecodeHelper.getTypeDescription(field.getType()));
    }
}

Example 52 with MethodVisitor

use of org.objectweb.asm.MethodVisitor in project groovy by apache.

the class AsmClassGenerator method onLineNumber.

public void onLineNumber(ASTNode statement, String message) {
    MethodVisitor mv = controller.getMethodVisitor();
    if (statement == null)
        return;
    int line = statement.getLineNumber();
    this.currentASTNode = statement;
    if (line < 0)
        return;
    if (!ASM_DEBUG && line == controller.getLineNumber())
        return;
    controller.setLineNumber(line);
    if (mv != null) {
        Label l = new Label();
        mv.visitLabel(l);
        mv.visitLineNumber(line, l);
    }
}

Example 53 with MethodVisitor

use of org.objectweb.asm.MethodVisitor in project groovy by apache.

the class AsmClassGenerator method visitClassExpression.

/**
     * load class object on stack
     */
public void visitClassExpression(ClassExpression expression) {
    ClassNode type = expression.getType();
    MethodVisitor mv = controller.getMethodVisitor();
    if (BytecodeHelper.isClassLiteralPossible(type) || BytecodeHelper.isSameCompilationUnit(controller.getClassNode(), type)) {
        if (controller.getClassNode().isInterface()) {
            InterfaceHelperClassNode interfaceClassLoadingClass = controller.getInterfaceClassLoadingClass();
            if (BytecodeHelper.isClassLiteralPossible(interfaceClassLoadingClass)) {
                BytecodeHelper.visitClassLiteral(mv, interfaceClassLoadingClass);
                controller.getOperandStack().push(ClassHelper.CLASS_Type);
                return;
            }
        } else {
            BytecodeHelper.visitClassLiteral(mv, type);
            controller.getOperandStack().push(ClassHelper.CLASS_Type);
            return;
        }
    }
    String staticFieldName = getStaticFieldName(type);
    referencedClasses.put(staticFieldName, type);
    String internalClassName = controller.getInternalClassName();
    if (controller.getClassNode().isInterface()) {
        internalClassName = BytecodeHelper.getClassInternalName(controller.getInterfaceClassLoadingClass());
        mv.visitFieldInsn(GETSTATIC, internalClassName, staticFieldName, "Ljava/lang/Class;");
    } else {
        mv.visitMethodInsn(INVOKESTATIC, internalClassName, "$get$" + staticFieldName, "()Ljava/lang/Class;", false);
    }
    controller.getOperandStack().push(ClassHelper.CLASS_Type);
}

Example 54 with MethodVisitor

use of org.objectweb.asm.MethodVisitor in project groovy by apache.

the class AsmClassGenerator method visitConstructorOrMethod.

protected void visitConstructorOrMethod(MethodNode node, boolean isConstructor) {
    controller.resetLineNumber();
    Parameter[] parameters = node.getParameters();
    String methodType = BytecodeHelper.getMethodDescriptor(node.getReturnType(), parameters);
    String signature = BytecodeHelper.getGenericsMethodSignature(node);
    int modifiers = node.getModifiers();
    if (isVargs(node.getParameters()))
        modifiers |= Opcodes.ACC_VARARGS;
    MethodVisitor mv = cv.visitMethod(modifiers, node.getName(), methodType, signature, buildExceptions(node.getExceptions()));
    controller.setMethodVisitor(mv);
    visitAnnotations(node, mv);
    for (int i = 0; i < parameters.length; i++) {
        visitParameterAnnotations(parameters[i], i, mv);
    }
    // Add parameter names to the MethodVisitor (jdk8+ only)
    if (getCompileUnit().getConfig().getParameters()) {
        for (int i = 0; i < parameters.length; i++) {
            // TODO handle ACC_SYNTHETIC for enum method parameters?
            mv.visitParameter(parameters[i].getName(), 0);
        }
    }
    if (controller.getClassNode().isAnnotationDefinition() && !node.isStaticConstructor()) {
        visitAnnotationDefault(node, mv);
    } else if (!node.isAbstract()) {
        Statement code = node.getCode();
        mv.visitCode();
        // fast path for getter/setters etc.
        if (code instanceof BytecodeSequence && ((BytecodeSequence) code).getInstructions().size() == 1 && ((BytecodeSequence) code).getInstructions().get(0) instanceof BytecodeInstruction) {
            ((BytecodeInstruction) ((BytecodeSequence) code).getInstructions().get(0)).visit(mv);
        } else {
            visitStdMethod(node, isConstructor, parameters, code);
        }
        //mv.visitInsn(NOP);
        try {
            mv.visitMaxs(0, 0);
        } catch (Exception e) {
            throw new GroovyRuntimeException("ASM reporting processing error for " + controller.getClassNode() + "#" + node.getName() + " with signature " + node.getTypeDescriptor() + " in " + sourceFile + ":" + node.getLineNumber(), e);
        }
    }
    mv.visitEnd();
}

Example 55 with MethodVisitor

use of org.objectweb.asm.MethodVisitor in project groovy by apache.

the class AsmClassGenerator method storeStaticField.

private void storeStaticField(FieldExpression expression) {
    MethodVisitor mv = controller.getMethodVisitor();
    FieldNode field = expression.getField();
    boolean holder = field.isHolder() && !controller.isInClosureConstructor();
    controller.getOperandStack().doGroovyCast(field);
    String ownerName = (field.getOwner().equals(controller.getClassNode())) ? controller.getInternalClassName() : BytecodeHelper.getClassInternalName(field.getOwner());
    if (holder) {
        controller.getOperandStack().box();
        mv.visitFieldInsn(GETSTATIC, ownerName, expression.getFieldName(), BytecodeHelper.getTypeDescription(field.getType()));
        mv.visitInsn(SWAP);
        mv.visitMethodInsn(INVOKEVIRTUAL, "groovy/lang/Reference", "set", "(Ljava/lang/Object;)V", false);
    } else {
        mv.visitFieldInsn(PUTSTATIC, ownerName, expression.getFieldName(), BytecodeHelper.getTypeDescription(field.getType()));
    }
    controller.getOperandStack().remove(1);
}