@Override
 public void visitMethodCallExpression(final MethodCallExpression call) {
   super.visitMethodCallExpression(call);
   MethodNode mn = call.getMethodTarget();
   if (mn == null) {
     call.setMethodTarget(doCallMethod);
   }
 }
  private void createDirectCallMethod(final ClassNode closureClass, final MethodNode doCallMethod) {
    // in case there is no "call" method on the closure, we can create a "fast invocation" paths
    // to avoid going through ClosureMetaClass by call(Object...) method

    // we can't have a specialized version of call(Object...) because the dispatch logic in
    // ClosureMetaClass
    // is too complex!

    // call(Object)
    Parameter args = new Parameter(ClassHelper.OBJECT_TYPE, "args");
    MethodCallExpression doCall1arg =
        new MethodCallExpression(
            new VariableExpression("this"),
            "doCall",
            new ArgumentListExpression(new VariableExpression(args)));
    doCall1arg.setImplicitThis(true);
    doCall1arg.setMethodTarget(doCallMethod);
    closureClass.addMethod(
        new MethodNode(
            "call",
            Opcodes.ACC_PUBLIC,
            ClassHelper.OBJECT_TYPE,
            new Parameter[] {args},
            ClassNode.EMPTY_ARRAY,
            new ReturnStatement(doCall1arg)));

    // call()
    MethodCallExpression doCallNoArgs =
        new MethodCallExpression(
            new VariableExpression("this"),
            "doCall",
            new ArgumentListExpression(new ConstantExpression(null)));
    doCallNoArgs.setImplicitThis(true);
    doCallNoArgs.setMethodTarget(doCallMethod);
    closureClass.addMethod(
        new MethodNode(
            "call",
            Opcodes.ACC_PUBLIC,
            ClassHelper.OBJECT_TYPE,
            Parameter.EMPTY_ARRAY,
            ClassNode.EMPTY_ARRAY,
            new ReturnStatement(doCallNoArgs)));
  }
  /**
   * This method is used to add "bridge" methods for private methods of an inner/outer class, so
   * that the outer class is capable of calling them. It does basically the same job as access$000
   * like methods in Java.
   *
   * @param node an inner/outer class node for which to generate bridge methods
   */
  @SuppressWarnings("unchecked")
  private void addPrivateBridgeMethods(final ClassNode node) {
    Set<ASTNode> accessedMethods =
        (Set<ASTNode>) node.getNodeMetaData(StaticTypesMarker.PV_METHODS_ACCESS);
    if (accessedMethods == null) return;
    List<MethodNode> methods = new ArrayList<MethodNode>(node.getAllDeclaredMethods());
    Map<MethodNode, MethodNode> privateBridgeMethods =
        (Map<MethodNode, MethodNode>) node.getNodeMetaData(PRIVATE_BRIDGE_METHODS);
    if (privateBridgeMethods != null) {
      // private bridge methods already added
      return;
    }
    privateBridgeMethods = new HashMap<MethodNode, MethodNode>();
    int i = -1;
    final int access = Opcodes.ACC_STATIC | Opcodes.ACC_PUBLIC | Opcodes.ACC_SYNTHETIC;
    for (MethodNode method : methods) {
      if (accessedMethods.contains(method)) {
        i++;
        Parameter[] methodParameters = method.getParameters();
        Parameter[] newParams = new Parameter[methodParameters.length + 1];
        System.arraycopy(methodParameters, 0, newParams, 1, methodParameters.length);
        newParams[0] = new Parameter(node.getPlainNodeReference(), "$that");
        Expression arguments;
        if (method.getParameters() == null || method.getParameters().length == 0) {
          arguments = ArgumentListExpression.EMPTY_ARGUMENTS;
        } else {
          List<Expression> args = new LinkedList<Expression>();
          for (Parameter parameter : methodParameters) {
            args.add(new VariableExpression(parameter));
          }
          arguments = new ArgumentListExpression(args);
        }
        Expression receiver =
            method.isStatic() ? new ClassExpression(node) : new VariableExpression(newParams[0]);
        MethodCallExpression mce = new MethodCallExpression(receiver, method.getName(), arguments);
        mce.setMethodTarget(method);

        ExpressionStatement returnStatement = new ExpressionStatement(mce);
        MethodNode bridge =
            node.addMethod(
                "access$" + i,
                access,
                method.getReturnType(),
                newParams,
                method.getExceptions(),
                returnStatement);
        privateBridgeMethods.put(method, bridge);
        bridge.addAnnotation(new AnnotationNode(COMPILESTATIC_CLASSNODE));
      }
    }
    if (!privateBridgeMethods.isEmpty()) {
      node.setNodeMetaData(PRIVATE_BRIDGE_METHODS, privateBridgeMethods);
    }
  }
  @Override
  public void visitMethodCallExpression(final MethodCallExpression call) {
    super.visitMethodCallExpression(call);

    MethodNode target = (MethodNode) call.getNodeMetaData(DIRECT_METHOD_CALL_TARGET);
    if (target != null) {
      call.setMethodTarget(target);
      memorizeInitialExpressions(target);
    }

    if (call.getMethodTarget() == null && call.getLineNumber() > 0) {
      addError("Target method for method call expression hasn't been set", call);
    }
  }
Esempio n. 5
0
  /**
   * Adds a delegate method to the target class node where the first argument is to the delegate
   * method is 'this'. In other words a method such as foo(Object instance, String bar) would be
   * added with a signature of foo(String) and 'this' is passed to the delegate instance
   *
   * @param classNode The class node
   * @param delegate The expression that looks up the delegate
   * @param declaredMethod The declared method
   * @param thisAsFirstArgument Whether 'this' should be passed as the first argument to the method
   * @return The added method node or null if it couldn't be added
   */
  public static MethodNode addDelegateInstanceMethod(
      ClassNode classNode,
      Expression delegate,
      MethodNode declaredMethod,
      boolean thisAsFirstArgument) {
    Parameter[] parameterTypes =
        thisAsFirstArgument
            ? getRemainingParameterTypes(declaredMethod.getParameters())
            : declaredMethod.getParameters();
    String methodName = declaredMethod.getName();
    if (classNode.hasDeclaredMethod(methodName, parameterTypes)) {
      return null;
    }
    String propertyName = GrailsClassUtils.getPropertyForGetter(methodName);
    if (propertyName != null && parameterTypes.length == 0 && classNode.hasProperty(propertyName)) {
      return null;
    }
    propertyName = GrailsClassUtils.getPropertyForSetter(methodName);
    if (propertyName != null && parameterTypes.length == 1 && classNode.hasProperty(propertyName)) {
      return null;
    }

    BlockStatement methodBody = new BlockStatement();
    ArgumentListExpression arguments =
        createArgumentListFromParameters(parameterTypes, thisAsFirstArgument);

    ClassNode returnType = nonGeneric(declaredMethod.getReturnType());

    MethodCallExpression methodCallExpression =
        new MethodCallExpression(delegate, methodName, arguments);
    methodCallExpression.setMethodTarget(declaredMethod);
    ThrowStatement missingMethodException = createMissingMethodThrowable(classNode, declaredMethod);
    VariableExpression apiVar = addApiVariableDeclaration(delegate, declaredMethod, methodBody);
    IfStatement ifStatement =
        createIfElseStatementForApiMethodCall(methodCallExpression, apiVar, missingMethodException);

    methodBody.addStatement(ifStatement);
    MethodNode methodNode =
        new MethodNode(
            methodName,
            Modifier.PUBLIC,
            returnType,
            copyParameters(parameterTypes),
            GrailsArtefactClassInjector.EMPTY_CLASS_ARRAY,
            methodBody);
    methodNode.addAnnotations(declaredMethod.getAnnotations());

    classNode.addMethod(methodNode);
    return methodNode;
  }
Esempio n. 6
0
  /**
   * Adds a static method to the given class node that delegates to the given method and resolves
   * the object to invoke the method on from the given expression.
   *
   * @param expression The expression
   * @param classNode The class node
   * @param delegateMethod The delegate method
   * @return The added method node or null if it couldn't be added
   */
  public static MethodNode addDelegateStaticMethod(
      Expression expression, ClassNode classNode, MethodNode delegateMethod) {
    Parameter[] parameterTypes = delegateMethod.getParameters();
    String declaredMethodName = delegateMethod.getName();
    if (classNode.hasDeclaredMethod(declaredMethodName, parameterTypes)) {
      return null;
    }

    BlockStatement methodBody = new BlockStatement();
    ArgumentListExpression arguments = new ArgumentListExpression();

    for (Parameter parameterType : parameterTypes) {
      arguments.addExpression(new VariableExpression(parameterType.getName()));
    }
    MethodCallExpression methodCallExpression =
        new MethodCallExpression(expression, declaredMethodName, arguments);
    methodCallExpression.setMethodTarget(delegateMethod);

    ThrowStatement missingMethodException = createMissingMethodThrowable(classNode, delegateMethod);
    VariableExpression apiVar = addApiVariableDeclaration(expression, delegateMethod, methodBody);
    IfStatement ifStatement =
        createIfElseStatementForApiMethodCall(methodCallExpression, apiVar, missingMethodException);

    methodBody.addStatement(ifStatement);
    ClassNode returnType = nonGeneric(delegateMethod.getReturnType());
    if (METHOD_MISSING_METHOD_NAME.equals(declaredMethodName)) {
      declaredMethodName = STATIC_METHOD_MISSING_METHOD_NAME;
    }
    MethodNode methodNode = classNode.getDeclaredMethod(declaredMethodName, parameterTypes);
    if (methodNode == null) {
      methodNode =
          new MethodNode(
              declaredMethodName,
              Modifier.PUBLIC | Modifier.STATIC,
              returnType,
              copyParameters(parameterTypes),
              GrailsArtefactClassInjector.EMPTY_CLASS_ARRAY,
              methodBody);
      methodNode.addAnnotations(delegateMethod.getAnnotations());

      classNode.addMethod(methodNode);
    }
    return methodNode;
  }
 private Expression convertInOperatorToTernary(
     final BinaryExpression bin,
     final Expression rightExpression,
     final Expression leftExpression) {
   MethodCallExpression call = new MethodCallExpression(rightExpression, "isCase", leftExpression);
   call.setMethodTarget(
       (MethodNode) bin.getNodeMetaData(StaticTypesMarker.DIRECT_METHOD_CALL_TARGET));
   call.setSourcePosition(bin);
   call.copyNodeMetaData(bin);
   TernaryExpression tExp =
       new TernaryExpression(
           new BooleanExpression(
               new BinaryExpression(
                   rightExpression, Token.newSymbol("==", -1, -1), new ConstantExpression(null))),
           new BinaryExpression(
               leftExpression, Token.newSymbol("==", -1, -1), new ConstantExpression(null)),
           call);
   return staticCompilationTransformer.transform(tExp);
 }
 @SuppressWarnings("unchecked")
 private boolean makeGetPrivateFieldWithBridgeMethod(
     final Expression receiver,
     final ClassNode receiverType,
     final String fieldName,
     final boolean safe,
     final boolean implicitThis) {
   FieldNode field = receiverType.getField(fieldName);
   ClassNode classNode = controller.getClassNode();
   if (field != null
       && Modifier.isPrivate(field.getModifiers())
       && (StaticInvocationWriter.isPrivateBridgeMethodsCallAllowed(receiverType, classNode)
           || StaticInvocationWriter.isPrivateBridgeMethodsCallAllowed(classNode, receiverType))
       && !receiverType.equals(classNode)) {
     Map<String, MethodNode> accessors =
         (Map<String, MethodNode>)
             receiverType
                 .redirect()
                 .getNodeMetaData(StaticCompilationMetadataKeys.PRIVATE_FIELDS_ACCESSORS);
     if (accessors != null) {
       MethodNode methodNode = accessors.get(fieldName);
       if (methodNode != null) {
         MethodCallExpression mce =
             new MethodCallExpression(
                 receiver,
                 methodNode.getName(),
                 new ArgumentListExpression(
                     field.isStatic() ? new ConstantExpression(null) : receiver));
         mce.setMethodTarget(methodNode);
         mce.setSafe(safe);
         mce.setImplicitThis(implicitThis);
         mce.visit(controller.getAcg());
         return true;
       }
     }
   }
   return false;
 }
  private boolean trySubscript(
      final Expression receiver,
      final String message,
      final Expression arguments,
      ClassNode rType,
      final ClassNode aType) {
    if (getWrapper(rType).isDerivedFrom(Number_TYPE)
        && getWrapper(aType).isDerivedFrom(Number_TYPE)) {
      if ("plus".equals(message)
          || "minus".equals(message)
          || "multiply".equals(message)
          || "div".equals(message)) {
        writeNumberNumberCall(receiver, message, arguments);
        return true;
      } else if ("power".equals(message)) {
        writePowerCall(receiver, arguments, rType, aType);
        return true;
      } else if ("mod".equals(message)) {
        writeModCall(receiver, arguments, rType, aType);
        return true;
      }
    } else if (STRING_TYPE.equals(rType) && "plus".equals(message)) {
      writeStringPlusCall(receiver, message, arguments);
      return true;
    } else if ("getAt".equals(message)) {
      if (rType.isArray() && getWrapper(aType).isDerivedFrom(Number_TYPE)) {
        writeArrayGet(receiver, arguments, rType, aType);
        return true;
      } else {
        // check if a getAt method can be found on the receiver
        ClassNode current = rType;
        MethodNode getAtNode = null;
        while (current != null && getAtNode == null) {
          getAtNode = current.getMethod("getAt", new Parameter[] {new Parameter(aType, "index")});
          if (getAtNode == null && isPrimitiveType(aType)) {
            getAtNode =
                current.getMethod(
                    "getAt", new Parameter[] {new Parameter(getWrapper(aType), "index")});
          } else if (getAtNode == null && aType.isDerivedFrom(Number_TYPE)) {
            getAtNode =
                current.getMethod(
                    "getAt", new Parameter[] {new Parameter(getUnwrapper(aType), "index")});
          }
          current = current.getSuperClass();
        }
        if (getAtNode != null) {
          MethodCallExpression call = new MethodCallExpression(receiver, "getAt", arguments);
          call.setSourcePosition(arguments);
          call.setImplicitThis(false);
          call.setMethodTarget(getAtNode);
          call.visit(controller.getAcg());
          return true;
        }

        // make sure Map#getAt() and List#getAt handled with the bracket syntax are properly
        // compiled
        ClassNode[] args = {aType};
        boolean acceptAnyMethod =
            MAP_TYPE.equals(rType)
                || rType.implementsInterface(MAP_TYPE)
                || LIST_TYPE.equals(rType)
                || rType.implementsInterface(LIST_TYPE);
        List<MethodNode> nodes =
            StaticTypeCheckingSupport.findDGMMethodsByNameAndArguments(
                controller.getSourceUnit().getClassLoader(), rType, message, args);
        if (nodes.isEmpty()) {
          // retry with raw types
          rType = rType.getPlainNodeReference();
          nodes =
              StaticTypeCheckingSupport.findDGMMethodsByNameAndArguments(
                  controller.getSourceUnit().getClassLoader(), rType, message, args);
        }
        nodes = StaticTypeCheckingSupport.chooseBestMethod(rType, nodes, args);
        if (nodes.size() == 1 || nodes.size() > 1 && acceptAnyMethod) {
          MethodNode methodNode = nodes.get(0);
          MethodCallExpression call = new MethodCallExpression(receiver, message, arguments);
          call.setSourcePosition(arguments);
          call.setImplicitThis(false);
          call.setMethodTarget(methodNode);
          call.visit(controller.getAcg());
          return true;
        }
        if (implementsInterfaceOrIsSubclassOf(rType, MAP_TYPE)) {
          // fallback to Map#get
          MethodCallExpression call = new MethodCallExpression(receiver, "get", arguments);
          call.setMethodTarget(MAP_GET_METHOD);
          call.setSourcePosition(arguments);
          call.setImplicitThis(false);
          call.visit(controller.getAcg());
          return true;
        }
      }
    }
    return false;
  }
  private boolean makeGetPropertyWithGetter(
      final Expression receiver,
      final ClassNode receiverType,
      final String methodName,
      final boolean safe,
      final boolean implicitThis) {
    // does a getter exists ?
    String getterName = "get" + MetaClassHelper.capitalize(methodName);
    MethodNode getterNode = receiverType.getGetterMethod(getterName);
    if (getterNode == null) {
      getterName = "is" + MetaClassHelper.capitalize(methodName);
      getterNode = receiverType.getGetterMethod(getterName);
    }
    if (getterNode != null
        && receiver instanceof ClassExpression
        && !CLASS_Type.equals(receiverType)
        && !getterNode.isStatic()) {
      return false;
    }

    // GROOVY-5561: if two files are compiled in the same source unit
    // and that one references the other, the getters for properties have not been
    // generated by the compiler yet (generated by the Verifier)
    PropertyNode propertyNode = receiverType.getProperty(methodName);
    if (propertyNode != null) {
      // it is possible to use a getter
      String prefix = "get";
      if (boolean_TYPE.equals(propertyNode.getOriginType())) {
        prefix = "is";
      }
      getterName = prefix + MetaClassHelper.capitalize(methodName);
      getterNode =
          new MethodNode(
              getterName,
              ACC_PUBLIC,
              propertyNode.getOriginType(),
              Parameter.EMPTY_ARRAY,
              ClassNode.EMPTY_ARRAY,
              EmptyStatement.INSTANCE);
      getterNode.setDeclaringClass(receiverType);
      if (propertyNode.isStatic()) getterNode.setModifiers(ACC_PUBLIC + ACC_STATIC);
    }
    if (getterNode != null) {
      MethodCallExpression call =
          new MethodCallExpression(receiver, getterName, ArgumentListExpression.EMPTY_ARGUMENTS);
      call.setSourcePosition(receiver);
      call.setMethodTarget(getterNode);
      call.setImplicitThis(implicitThis);
      call.setSafe(safe);
      call.visit(controller.getAcg());
      return true;
    }

    if (receiverType instanceof InnerClassNode && !receiverType.isStaticClass()) {
      if (makeGetPropertyWithGetter(
          receiver, receiverType.getOuterClass(), methodName, safe, implicitThis)) {
        return true;
      }
    }

    // go upper level
    ClassNode superClass = receiverType.getSuperClass();
    if (superClass != null) {
      return makeGetPropertyWithGetter(receiver, superClass, methodName, safe, implicitThis);
    }
    return false;
  }
  @Override
  public void makeGroovyObjectGetPropertySite(
      final Expression receiver,
      final String methodName,
      final boolean safe,
      final boolean implicitThis) {
    TypeChooser typeChooser = controller.getTypeChooser();
    ClassNode classNode = controller.getClassNode();
    ClassNode receiverType = typeChooser.resolveType(receiver, classNode);
    if (receiver instanceof VariableExpression
        && ((VariableExpression) receiver).isThisExpression()
        && !controller.isInClosure()) {
      receiverType = classNode;
    }

    String property = methodName;
    if (implicitThis) {
      if (controller.getInvocationWriter() instanceof StaticInvocationWriter) {
        MethodCallExpression currentCall =
            ((StaticInvocationWriter) controller.getInvocationWriter()).getCurrentCall();
        if (currentCall != null
            && currentCall.getNodeMetaData(StaticTypesMarker.IMPLICIT_RECEIVER) != null) {
          property = (String) currentCall.getNodeMetaData(StaticTypesMarker.IMPLICIT_RECEIVER);
          String[] props = property.split("\\.");
          BytecodeExpression thisLoader =
              new BytecodeExpression() {
                @Override
                public void visit(final MethodVisitor mv) {
                  mv.visitVarInsn(ALOAD, 0); // load this
                }
              };
          thisLoader.setType(CLOSURE_TYPE);
          Expression pexp =
              new PropertyExpression(thisLoader, new ConstantExpression(props[0]), safe);
          for (int i = 1, propsLength = props.length; i < propsLength; i++) {
            final String prop = props[i];
            pexp.putNodeMetaData(StaticTypesMarker.INFERRED_TYPE, CLOSURE_TYPE);
            pexp = new PropertyExpression(pexp, prop);
          }
          pexp.visit(controller.getAcg());
          return;
        }
      }
    }

    if (makeGetPropertyWithGetter(receiver, receiverType, property, safe, implicitThis)) return;
    if (makeGetField(
        receiver,
        receiverType,
        property,
        implicitThis,
        samePackages(receiverType.getPackageName(), classNode.getPackageName()))) return;

    MethodCallExpression call =
        new MethodCallExpression(
            receiver, "getProperty", new ArgumentListExpression(new ConstantExpression(property)));
    call.setImplicitThis(implicitThis);
    call.setSafe(safe);
    call.setMethodTarget(GROOVYOBJECT_GETPROPERTY_METHOD);
    call.visit(controller.getAcg());
    return;
  }
  Expression transformBinaryExpression(final BinaryExpression bin) {
    if (bin instanceof DeclarationExpression) {
      Expression optimized = transformDeclarationExpression(bin);
      if (optimized != null) {
        return optimized;
      }
    }
    Object[] list = bin.getNodeMetaData(BINARY_EXP_TARGET);
    Token operation = bin.getOperation();
    int operationType = operation.getType();
    Expression rightExpression = bin.getRightExpression();
    Expression leftExpression = bin.getLeftExpression();
    if (bin instanceof DeclarationExpression && leftExpression instanceof VariableExpression) {
      ClassNode declarationType = ((VariableExpression) leftExpression).getOriginType();
      if (rightExpression instanceof ConstantExpression) {
        ClassNode unwrapper = ClassHelper.getUnwrapper(declarationType);
        ClassNode wrapper = ClassHelper.getWrapper(declarationType);
        if (!rightExpression.getType().equals(declarationType)
            && wrapper.isDerivedFrom(ClassHelper.Number_TYPE)
            && WideningCategories.isDoubleCategory(unwrapper)) {
          ConstantExpression constant = (ConstantExpression) rightExpression;
          if (constant.getValue() != null) {
            return optimizeConstantInitialization(
                bin, operation, constant, leftExpression, declarationType);
          }
        }
      }
    }
    if (operationType == Types.EQUAL && leftExpression instanceof PropertyExpression) {
      MethodNode directMCT =
          leftExpression.getNodeMetaData(StaticTypesMarker.DIRECT_METHOD_CALL_TARGET);
      if (directMCT != null) {
        return transformPropertyAssignmentToSetterCall(
            (PropertyExpression) leftExpression, rightExpression, directMCT);
      }
    }
    if (operationType == Types.COMPARE_EQUAL || operationType == Types.COMPARE_NOT_EQUAL) {
      // let's check if one of the operands is the null constant
      CompareToNullExpression compareToNullExpression = null;
      if (isNullConstant(leftExpression)) {
        compareToNullExpression =
            new CompareToNullExpression(
                staticCompilationTransformer.transform(rightExpression),
                operationType == Types.COMPARE_EQUAL);
      } else if (isNullConstant(rightExpression)) {
        compareToNullExpression =
            new CompareToNullExpression(
                staticCompilationTransformer.transform(leftExpression),
                operationType == Types.COMPARE_EQUAL);
      }
      if (compareToNullExpression != null) {
        compareToNullExpression.setSourcePosition(bin);
        return compareToNullExpression;
      }
    } else if (operationType == Types.KEYWORD_IN) {
      return convertInOperatorToTernary(bin, rightExpression, leftExpression);
    }
    if (list != null) {
      if (operationType == Types.COMPARE_TO) {
        StaticTypesTypeChooser typeChooser = staticCompilationTransformer.getTypeChooser();
        ClassNode classNode = staticCompilationTransformer.getClassNode();
        ClassNode leftType = typeChooser.resolveType(leftExpression, classNode);
        if (leftType.implementsInterface(ClassHelper.COMPARABLE_TYPE)) {
          ClassNode rightType = typeChooser.resolveType(rightExpression, classNode);
          if (rightType.implementsInterface(ClassHelper.COMPARABLE_TYPE)) {
            Expression left = staticCompilationTransformer.transform(leftExpression);
            Expression right = staticCompilationTransformer.transform(rightExpression);
            MethodCallExpression call =
                new MethodCallExpression(left, "compareTo", new ArgumentListExpression(right));
            call.setImplicitThis(false);
            call.setMethodTarget(COMPARE_TO_METHOD);

            CompareIdentityExpression compareIdentity = new CompareIdentityExpression(left, right);
            compareIdentity.putNodeMetaData(
                StaticTypesMarker.INFERRED_RETURN_TYPE, ClassHelper.boolean_TYPE);
            TernaryExpression result =
                new TernaryExpression(
                    new BooleanExpression(compareIdentity), // a==b
                    CONSTANT_ZERO,
                    new TernaryExpression(
                        new BooleanExpression(new CompareToNullExpression(left, true)), // a==null
                        CONSTANT_MINUS_ONE,
                        new TernaryExpression(
                            new BooleanExpression(
                                new CompareToNullExpression(right, true)), // b==null
                            CONSTANT_ONE,
                            call)));
            compareIdentity.putNodeMetaData(
                StaticTypesMarker.INFERRED_RETURN_TYPE, ClassHelper.int_TYPE);
            result.putNodeMetaData(StaticTypesMarker.INFERRED_TYPE, ClassHelper.int_TYPE);
            TernaryExpression expr = (TernaryExpression) result.getFalseExpression();
            expr.putNodeMetaData(StaticTypesMarker.INFERRED_TYPE, ClassHelper.int_TYPE);
            expr.getFalseExpression()
                .putNodeMetaData(StaticTypesMarker.INFERRED_TYPE, ClassHelper.int_TYPE);
            return result;
          }
        }
      }
      boolean isAssignment = StaticTypeCheckingSupport.isAssignment(operationType);
      MethodCallExpression call;
      MethodNode node = (MethodNode) list[0];
      String name = (String) list[1];
      Expression left = staticCompilationTransformer.transform(leftExpression);
      Expression right = staticCompilationTransformer.transform(rightExpression);
      BinaryExpression optimized = tryOptimizeCharComparison(left, right, bin);
      if (optimized != null) {
        optimized.removeNodeMetaData(BINARY_EXP_TARGET);
        return transformBinaryExpression(optimized);
      }
      call = new MethodCallExpression(left, name, new ArgumentListExpression(right));
      call.setImplicitThis(false);
      call.setMethodTarget(node);
      MethodNode adapter = StaticCompilationTransformer.BYTECODE_BINARY_ADAPTERS.get(operationType);
      if (adapter != null) {
        ClassExpression sba =
            new ClassExpression(StaticCompilationTransformer.BYTECODE_ADAPTER_CLASS);
        // replace with compareEquals
        call =
            new MethodCallExpression(sba, "compareEquals", new ArgumentListExpression(left, right));
        call.setMethodTarget(adapter);
        call.setImplicitThis(false);
      }
      if (!isAssignment) return call;
      // case of +=, -=, /=, ...
      // the method represents the operation type only, and we must add an assignment
      return new BinaryExpression(
          left, Token.newSymbol("=", operation.getStartLine(), operation.getStartColumn()), call);
    }
    if (bin.getOperation().getType() == Types.EQUAL
        && leftExpression instanceof TupleExpression
        && rightExpression instanceof ListExpression) {
      // multiple assignment
      ListOfExpressionsExpression cle = new ListOfExpressionsExpression();
      boolean isDeclaration = bin instanceof DeclarationExpression;
      List<Expression> leftExpressions = ((TupleExpression) leftExpression).getExpressions();
      List<Expression> rightExpressions = ((ListExpression) rightExpression).getExpressions();
      Iterator<Expression> leftIt = leftExpressions.iterator();
      Iterator<Expression> rightIt = rightExpressions.iterator();
      if (isDeclaration) {
        while (leftIt.hasNext()) {
          Expression left = leftIt.next();
          if (rightIt.hasNext()) {
            Expression right = rightIt.next();
            BinaryExpression bexp = new DeclarationExpression(left, bin.getOperation(), right);
            bexp.setSourcePosition(right);
            cle.addExpression(bexp);
          }
        }
      } else {
        // (next, result) = [ result, next+result ]
        // -->
        // def tmp1 = result
        // def tmp2 = next+result
        // next = tmp1
        // result = tmp2
        int size = rightExpressions.size();
        List<Expression> tmpAssignments = new ArrayList<Expression>(size);
        List<Expression> finalAssignments = new ArrayList<Expression>(size);
        for (int i = 0; i < Math.min(size, leftExpressions.size()); i++) {
          Expression left = leftIt.next();
          Expression right = rightIt.next();
          VariableExpression tmpVar = new VariableExpression("$tmpVar$" + tmpVarCounter++);
          BinaryExpression bexp = new DeclarationExpression(tmpVar, bin.getOperation(), right);
          bexp.setSourcePosition(right);
          tmpAssignments.add(bexp);
          bexp = new BinaryExpression(left, bin.getOperation(), new VariableExpression(tmpVar));
          bexp.setSourcePosition(left);
          finalAssignments.add(bexp);
        }
        for (Expression tmpAssignment : tmpAssignments) {
          cle.addExpression(tmpAssignment);
        }
        for (Expression finalAssignment : finalAssignments) {
          cle.addExpression(finalAssignment);
        }
      }
      return staticCompilationTransformer.transform(cle);
    }
    return staticCompilationTransformer.superTransform(bin);
  }
Esempio n. 13
0
  /**
   * Adds or modifies an existing constructor to delegate to the given static constructor method for
   * initialization logic.
   *
   * @param classNode The class node
   * @param constructorMethod The constructor static method
   */
  public static void addDelegateConstructor(ClassNode classNode, MethodNode constructorMethod) {
    BlockStatement constructorBody = new BlockStatement();
    Parameter[] constructorParams = getRemainingParameterTypes(constructorMethod.getParameters());
    ArgumentListExpression arguments = createArgumentListFromParameters(constructorParams, true);
    MethodCallExpression constructCallExpression =
        new MethodCallExpression(
            new ClassExpression(constructorMethod.getDeclaringClass()), "initialize", arguments);
    constructCallExpression.setMethodTarget(constructorMethod);
    ExpressionStatement constructorInitExpression =
        new ExpressionStatement(constructCallExpression);
    if (constructorParams.length > 0) {
      constructorBody.addStatement(
          new ExpressionStatement(
              new ConstructorCallExpression(
                  ClassNode.THIS, GrailsArtefactClassInjector.ZERO_ARGS)));
    }
    constructorBody.addStatement(constructorInitExpression);

    if (constructorParams.length == 0) {
      // handle default constructor

      ConstructorNode constructorNode = getDefaultConstructor(classNode);
      if (constructorNode != null) {
        List<AnnotationNode> annotations =
            constructorNode.getAnnotations(new ClassNode(GrailsDelegatingConstructor.class));
        if (annotations.size() == 0) {
          Statement existingBodyCode = constructorNode.getCode();
          if (existingBodyCode instanceof BlockStatement) {
            ((BlockStatement) existingBodyCode).addStatement(constructorInitExpression);
          } else {
            constructorNode.setCode(constructorBody);
          }
        }
      } else {
        constructorNode = new ConstructorNode(Modifier.PUBLIC, constructorBody);
        classNode.addConstructor(constructorNode);
      }
      constructorNode.addAnnotation(
          new AnnotationNode(new ClassNode(GrailsDelegatingConstructor.class)));
    } else {
      // create new constructor, restoring default constructor if there is none
      ConstructorNode cn = findConstructor(classNode, constructorParams);
      if (cn == null) {
        cn =
            new ConstructorNode(
                Modifier.PUBLIC, copyParameters(constructorParams), null, constructorBody);
        classNode.addConstructor(cn);
      } else {
        List<AnnotationNode> annotations =
            cn.getAnnotations(new ClassNode(GrailsDelegatingConstructor.class));
        if (annotations.size() == 0) {
          Statement code = cn.getCode();
          constructorBody.addStatement(code);
          cn.setCode(constructorBody);
        }
      }

      ConstructorNode defaultConstructor = getDefaultConstructor(classNode);
      if (defaultConstructor == null) {
        // add empty
        classNode.addConstructor(new ConstructorNode(Modifier.PUBLIC, new BlockStatement()));
      }
      cn.addAnnotation(new AnnotationNode(new ClassNode(GrailsDelegatingConstructor.class)));
    }
  }
  protected Expression transformMethodCallExpression(MethodCallExpression mce) {
    Expression args = transform(mce.getArguments());
    Expression method = transform(mce.getMethod());
    Expression object = transform(mce.getObjectExpression());
    boolean isExplicitThisOrSuper = false;
    if (object instanceof VariableExpression) {
      VariableExpression ve = (VariableExpression) object;
      isExplicitThisOrSuper =
          !mce.isImplicitThis() && (ve.getName().equals("this") || ve.getName().equals("super"));
    }

    if (mce.isImplicitThis() || isExplicitThisOrSuper) {
      if (mce.isImplicitThis()) {
        Expression ret = findStaticMethodImportFromModule(method, args);
        if (ret != null) {
          // GRECLIPSE add
          if (!((StaticMethodCallExpression) ret).getMethod().equals(method.getText())) {
            // store the identifier to facilitate organizing static imports
            ret.setNodeMetaData("static.import.alias", method.getText());
          }
          // GRECLIPSE end
          setSourcePosition(ret, mce);
          return ret;
        }
        if (method instanceof ConstantExpression && !inLeftExpression) {
          // could be a closure field
          String methodName = (String) ((ConstantExpression) method).getValue();
          ret = findStaticFieldOrPropAccessorImportFromModule(methodName);
          if (ret != null) {
            ret = new MethodCallExpression(ret, "call", args);
            setSourcePosition(ret, mce);
            return ret;
          }
        }
      }

      if (method instanceof ConstantExpression) {
        ConstantExpression ce = (ConstantExpression) method;
        Object value = ce.getValue();
        if (value instanceof String) {
          String methodName = (String) value;
          boolean lookForPossibleStaticMethod = !methodName.equals("call");
          if (currentMethod != null && !currentMethod.isStatic()) {
            if (currentClass.hasPossibleMethod(methodName, args)) {
              lookForPossibleStaticMethod = false;
            }
          }
          if (inSpecialConstructorCall
              || (lookForPossibleStaticMethod
                  && currentClass.hasPossibleStaticMethod(methodName, args))) {
            StaticMethodCallExpression smce =
                new StaticMethodCallExpression(currentClass, methodName, args);
            setSourcePosition(smce, mce);
            return smce;
          }
        }
      }
    }

    MethodCallExpression result = new MethodCallExpression(object, method, args);
    result.setSafe(mce.isSafe());
    result.setImplicitThis(mce.isImplicitThis());
    result.setSpreadSafe(mce.isSpreadSafe());
    result.setMethodTarget(mce.getMethodTarget());
    // GROOVY-6757
    result.setGenericsTypes(mce.getGenericsTypes());
    setSourcePosition(result, mce);
    return result;
  }
  @Override
  public void makeGetPropertySite(
      Expression receiver,
      final String methodName,
      final boolean safe,
      final boolean implicitThis) {
    Object dynamic =
        receiver.getNodeMetaData(StaticCompilationMetadataKeys.RECEIVER_OF_DYNAMIC_PROPERTY);
    if (dynamic != null) {
      MethodNode target =
          safe ? INVOKERHELPER_GETPROPERTYSAFE_METHOD : INVOKERHELPER_GETPROPERTY_METHOD;
      MethodCallExpression mce =
          new MethodCallExpression(
              new ClassExpression(INVOKERHELPER_TYPE),
              target.getName(),
              new ArgumentListExpression(receiver, new ConstantExpression(methodName)));
      mce.setSafe(false);
      mce.setImplicitThis(false);
      mce.setMethodTarget(target);
      mce.visit(controller.getAcg());
      return;
    }
    TypeChooser typeChooser = controller.getTypeChooser();
    ClassNode classNode = controller.getClassNode();
    ClassNode receiverType =
        (ClassNode) receiver.getNodeMetaData(StaticCompilationMetadataKeys.PROPERTY_OWNER);
    if (receiverType == null) {
      receiverType = typeChooser.resolveType(receiver, classNode);
    }
    Object type = receiver.getNodeMetaData(StaticTypesMarker.INFERRED_TYPE);
    if (type == null && receiver instanceof VariableExpression) {
      Variable variable = ((VariableExpression) receiver).getAccessedVariable();
      if (variable instanceof Expression) {
        type = ((Expression) variable).getNodeMetaData(StaticTypesMarker.INFERRED_TYPE);
      }
    }
    if (type != null) {
      // in case a "flow type" is found, it is preferred to use it instead of
      // the declaration type
      receiverType = (ClassNode) type;
    }
    boolean isClassReceiver = false;
    if (isClassClassNodeWrappingConcreteType(receiverType)) {
      isClassReceiver = true;
      receiverType = receiverType.getGenericsTypes()[0].getType();
    }
    MethodVisitor mv = controller.getMethodVisitor();

    if (receiverType.isArray() && methodName.equals("length")) {
      receiver.visit(controller.getAcg());
      ClassNode arrayGetReturnType = typeChooser.resolveType(receiver, classNode);
      controller.getOperandStack().doGroovyCast(arrayGetReturnType);
      mv.visitInsn(ARRAYLENGTH);
      controller.getOperandStack().replace(int_TYPE);
      return;
    } else if ((receiverType.implementsInterface(COLLECTION_TYPE)
            || COLLECTION_TYPE.equals(receiverType))
        && ("size".equals(methodName) || "length".equals(methodName))) {
      MethodCallExpression expr =
          new MethodCallExpression(receiver, "size", ArgumentListExpression.EMPTY_ARGUMENTS);
      expr.setMethodTarget(COLLECTION_SIZE_METHOD);
      expr.setImplicitThis(implicitThis);
      expr.setSafe(safe);
      expr.visit(controller.getAcg());
      return;
    }
    if (makeGetPropertyWithGetter(receiver, receiverType, methodName, safe, implicitThis)) return;
    if (makeGetField(
        receiver,
        receiverType,
        methodName,
        implicitThis,
        samePackages(receiverType.getPackageName(), classNode.getPackageName()))) return;
    if (receiverType.isEnum()) {
      mv.visitFieldInsn(
          GETSTATIC,
          BytecodeHelper.getClassInternalName(receiverType),
          methodName,
          BytecodeHelper.getTypeDescription(receiverType));
      controller.getOperandStack().push(receiverType);
      return;
    }
    if (receiver instanceof ClassExpression) {
      if (makeGetField(
          receiver,
          receiver.getType(),
          methodName,
          implicitThis,
          samePackages(receiver.getType().getPackageName(), classNode.getPackageName()))) return;
      if (makeGetPropertyWithGetter(receiver, receiver.getType(), methodName, safe, implicitThis))
        return;
      if (makeGetPrivateFieldWithBridgeMethod(
          receiver, receiver.getType(), methodName, safe, implicitThis)) return;
    }
    if (isClassReceiver) {
      // we are probably looking for a property of the class
      if (makeGetPropertyWithGetter(receiver, CLASS_Type, methodName, safe, implicitThis)) return;
      if (makeGetField(receiver, CLASS_Type, methodName, false, true)) return;
    }
    if (makeGetPrivateFieldWithBridgeMethod(receiver, receiverType, methodName, safe, implicitThis))
      return;

    // GROOVY-5580, it is still possible that we're calling a superinterface property
    String getterName = "get" + MetaClassHelper.capitalize(methodName);
    if (receiverType.isInterface()) {
      Set<ClassNode> allInterfaces = receiverType.getAllInterfaces();
      MethodNode getterMethod = null;
      for (ClassNode anInterface : allInterfaces) {
        getterMethod = anInterface.getGetterMethod(getterName);
        if (getterMethod != null) break;
      }
      // GROOVY-5585
      if (getterMethod == null) {
        getterMethod = OBJECT_TYPE.getGetterMethod(getterName);
      }

      if (getterMethod != null) {
        MethodCallExpression call =
            new MethodCallExpression(receiver, getterName, ArgumentListExpression.EMPTY_ARGUMENTS);
        call.setMethodTarget(getterMethod);
        call.setImplicitThis(false);
        call.setSourcePosition(receiver);
        call.visit(controller.getAcg());
        return;
      }
    }

    // GROOVY-5568, we would be facing a DGM call, but instead of foo.getText(), have foo.text
    List<MethodNode> methods =
        findDGMMethodsByNameAndArguments(
            controller.getSourceUnit().getClassLoader(),
            receiverType,
            getterName,
            ClassNode.EMPTY_ARRAY);
    if (!methods.isEmpty()) {
      List<MethodNode> methodNodes = chooseBestMethod(receiverType, methods, ClassNode.EMPTY_ARRAY);
      if (methodNodes.size() == 1) {
        MethodNode getter = methodNodes.get(0);
        MethodCallExpression call =
            new MethodCallExpression(receiver, getterName, ArgumentListExpression.EMPTY_ARGUMENTS);
        call.setMethodTarget(getter);
        call.setImplicitThis(false);
        call.setSourcePosition(receiver);
        call.visit(controller.getAcg());
        return;
      }
    }

    boolean isStaticProperty =
        receiver instanceof ClassExpression
            && (receiverType.isDerivedFrom(receiver.getType())
                || receiverType.implementsInterface(receiver.getType()));

    if (!isStaticProperty) {
      if (receiverType.implementsInterface(MAP_TYPE) || MAP_TYPE.equals(receiverType)) {
        // for maps, replace map.foo with map.get('foo')
        writeMapDotProperty(receiver, methodName, mv, safe);
        return;
      }
      if (receiverType.implementsInterface(LIST_TYPE) || LIST_TYPE.equals(receiverType)) {
        writeListDotProperty(receiver, methodName, mv, safe);
        return;
      }
    }

    controller
        .getSourceUnit()
        .addError(
            new SyntaxException(
                "Access to "
                    + (receiver instanceof ClassExpression ? receiver.getType() : receiverType)
                        .toString(false)
                    + "#"
                    + methodName
                    + " is forbidden",
                receiver.getLineNumber(),
                receiver.getColumnNumber(),
                receiver.getLastLineNumber(),
                receiver.getLastColumnNumber()));
    controller.getMethodVisitor().visitInsn(ACONST_NULL);
    controller.getOperandStack().push(OBJECT_TYPE);
  }
 Expression transformMethodCallExpression(final MethodCallExpression expr) {
   Expression objectExpression = expr.getObjectExpression();
   if (expr.isSafe()) {
     MethodCallExpression notSafe =
         new MethodCallExpression(objectExpression, expr.getMethod(), expr.getArguments());
     notSafe.copyNodeMetaData(expr);
     notSafe.setSpreadSafe(expr.isSpreadSafe());
     notSafe.setSourcePosition(expr);
     notSafe.setMethodTarget(expr.getMethodTarget());
     TernaryExpression texpr =
         new TernaryExpression(
             new BooleanExpression(
                 new BinaryExpression(
                     objectExpression,
                     Token.newSymbol(
                         "!=",
                         objectExpression.getLineNumber(),
                         objectExpression.getColumnNumber()),
                     ConstantExpression.NULL)),
             notSafe,
             ConstantExpression.NULL);
     return staticCompilationTransformer.transform(texpr);
   }
   ClassNode type =
       staticCompilationTransformer
           .getTypeChooser()
           .resolveType(objectExpression, staticCompilationTransformer.getClassNode());
   if (type != null && type.isArray()) {
     String method = expr.getMethodAsString();
     ClassNode componentType = type.getComponentType();
     if ("getAt".equals(method)) {
       Expression arguments = expr.getArguments();
       if (arguments instanceof TupleExpression) {
         List<Expression> argList = ((TupleExpression) arguments).getExpressions();
         if (argList.size() == 1) {
           Expression indexExpr = argList.get(0);
           ClassNode argType =
               staticCompilationTransformer
                   .getTypeChooser()
                   .resolveType(indexExpr, staticCompilationTransformer.getClassNode());
           ClassNode indexType = ClassHelper.getWrapper(argType);
           if (componentType.isEnum() && ClassHelper.Number_TYPE == indexType) {
             // workaround for generated code in enums which use .next() returning a Number
             indexType = ClassHelper.Integer_TYPE;
           }
           if (argType != null && ClassHelper.Integer_TYPE == indexType) {
             BinaryExpression binaryExpression =
                 new BinaryExpression(
                     objectExpression,
                     Token.newSymbol("[", indexExpr.getLineNumber(), indexExpr.getColumnNumber()),
                     indexExpr);
             binaryExpression.putNodeMetaData(StaticTypesMarker.INFERRED_TYPE, componentType);
             return staticCompilationTransformer.transform(binaryExpression);
           }
         }
       }
     }
     if ("putAt".equals(method)) {
       Expression arguments = expr.getArguments();
       if (arguments instanceof TupleExpression) {
         List<Expression> argList = ((TupleExpression) arguments).getExpressions();
         if (argList.size() == 2) {
           Expression indexExpr = argList.get(0);
           Expression objExpr = argList.get(1);
           ClassNode argType =
               staticCompilationTransformer
                   .getTypeChooser()
                   .resolveType(indexExpr, staticCompilationTransformer.getClassNode());
           if (argType != null && ClassHelper.Integer_TYPE == ClassHelper.getWrapper(argType)) {
             BinaryExpression arrayGet =
                 new BinaryExpression(
                     objectExpression,
                     Token.newSymbol("[", indexExpr.getLineNumber(), indexExpr.getColumnNumber()),
                     indexExpr);
             arrayGet.putNodeMetaData(StaticTypesMarker.INFERRED_TYPE, componentType);
             BinaryExpression assignment =
                 new BinaryExpression(
                     arrayGet,
                     Token.newSymbol("=", objExpr.getLineNumber(), objExpr.getColumnNumber()),
                     objExpr);
             return staticCompilationTransformer.transform(assignment);
           }
         }
       }
     }
   }
   return staticCompilationTransformer.superTransform(expr);
 }
  protected Expression transformMethodCallExpression(MethodCallExpression mce) {
    Expression args = transform(mce.getArguments());
    Expression method = transform(mce.getMethod());
    Expression object = transform(mce.getObjectExpression());
    boolean isExplicitThisOrSuper = false;
    boolean isExplicitSuper = false;
    if (object instanceof VariableExpression) {
      VariableExpression ve = (VariableExpression) object;
      isExplicitThisOrSuper =
          !mce.isImplicitThis() && (ve.isThisExpression() || ve.isSuperExpression());
      isExplicitSuper = ve.isSuperExpression();
    }

    if (mce.isImplicitThis() || isExplicitThisOrSuper) {
      if (mce.isImplicitThis()) {
        Expression ret = findStaticMethodImportFromModule(method, args);
        if (ret != null) {
          setSourcePosition(ret, mce);
          return ret;
        }
        if (method instanceof ConstantExpression && !inLeftExpression) {
          // could be a closure field
          String methodName = (String) ((ConstantExpression) method).getValue();
          ret = findStaticFieldOrPropAccessorImportFromModule(methodName);
          if (ret != null) {
            ret = new MethodCallExpression(ret, "call", args);
            setSourcePosition(ret, mce);
            return ret;
          }
        }
      } else if (currentMethod != null && currentMethod.isStatic() && isExplicitSuper) {
        MethodCallExpression ret =
            new MethodCallExpression(
                new ClassExpression(currentClass.getSuperClass()), method, args);
        setSourcePosition(ret, mce);
        return ret;
      }

      if (method instanceof ConstantExpression) {
        ConstantExpression ce = (ConstantExpression) method;
        Object value = ce.getValue();
        if (value instanceof String) {
          String methodName = (String) value;
          boolean lookForPossibleStaticMethod = !methodName.equals("call");
          if (currentMethod != null && !currentMethod.isStatic()) {
            if (currentClass.hasPossibleMethod(methodName, args)) {
              lookForPossibleStaticMethod = false;
            }
          }
          if (!inClosure
              && (inSpecialConstructorCall
                  || (lookForPossibleStaticMethod
                      && currentClass.hasPossibleStaticMethod(methodName, args)))) {
            StaticMethodCallExpression smce =
                new StaticMethodCallExpression(currentClass, methodName, args);
            setSourcePosition(smce, mce);
            return smce;
          }
        }
      }
    }

    MethodCallExpression result = new MethodCallExpression(object, method, args);
    result.setSafe(mce.isSafe());
    result.setImplicitThis(mce.isImplicitThis());
    result.setSpreadSafe(mce.isSpreadSafe());
    result.setMethodTarget(mce.getMethodTarget());
    // GROOVY-6757
    result.setGenericsTypes(mce.getGenericsTypes());
    setSourcePosition(result, mce);
    return result;
  }