net.sourceforge.pmd.lang.ast.Node.getFirstChildOfType()方法的使用及代码示例

x33g5p2x  于2022-01-25 转载在 其他  
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本文整理了Java中net.sourceforge.pmd.lang.ast.Node.getFirstChildOfType()方法的一些代码示例，展示了Node.getFirstChildOfType()的具体用法。这些代码示例主要来源于Github/Stackoverflow/Maven等平台，是从一些精选项目中提取出来的代码，具有较强的参考意义，能在一定程度帮忙到你。Node.getFirstChildOfType()方法的具体详情如下：
包路径：net.sourceforge.pmd.lang.ast.Node
类名称：Node
方法名：getFirstChildOfType

Node.getFirstChildOfType介绍

[英]Traverses the children to find the first instance of type childType.
[中]遍历子对象以查找childType类型的第一个实例。

代码示例

代码示例来源：origin: pmd/pmd

  1. private boolean hasElseOrElseIf(final Node parentIfNode) {
  2.   return parentIfNode.getFirstChildOfType(ASTElseStatement.class) != null
  3.       || parentIfNode.getFirstChildOfType(ASTElseIfStatement.class) != null;
  4. }

代码示例来源：origin: pmd/pmd

  1. /**
  2.  * Gets the first child, first grand child, ... of the given types.
  3.  * The children must follow the given order of types
  4.  *
  5.  * @param root the node from where to start the search
  6.  * @param childrenTypes the list of types
  7.  * @param <N> should match the last type of childrenType, otherwise you'll get a ClassCastException
  8.  * @return the found child node or <code>null</code>
  9.  */
  10. @SafeVarargs
  11. private static <N extends Node> N getFirstChild(Node root, Class<? extends Node> ... childrenTypes) {
  12.   Node current = root;
  13.   for (Class<? extends Node> clazz : childrenTypes) {
  14.     Node child = current.getFirstChildOfType(clazz);
  15.     if (child != null) {
  16.       current = child;
  17.     } else {
  18.       return null;
  19.     }
  20.   }
  21.   @SuppressWarnings("unchecked")
  22.   N result = (N) current;
  23.   return result;
  24. }

代码示例来源：origin: pmd/pmd

  1. public boolean isAnonymousClass() {
  2.   return jjtGetParent().getFirstChildOfType(ASTClassOrInterfaceBody.class) != null;
  3. }

代码示例来源：origin: pmd/pmd

  1. /**
  2.  * Returns the the first Class declaration around the node.
  3.  *
  4.  * @param node The node with the enclosing Class declaration.
  5.  *
  6.  * @return The JavaTypeDefinition of the enclosing Class declaration.
  7.  */
  8. private TypeNode getEnclosingTypeDeclaration(Node node) {
  9.   Node previousNode = null;
  10.   while (node != null) {
  11.     if (node instanceof ASTClassOrInterfaceDeclaration) {
  12.       return (TypeNode) node;
  13.       // anonymous class declaration
  14.     } else if (node instanceof ASTAllocationExpression // is anonymous class declaration
  15.         && node.getFirstChildOfType(ASTArrayDimsAndInits.class) == null // array cant be anonymous
  16.         && !(previousNode instanceof ASTArguments)) { // we might come out of the constructor
  17.       return (TypeNode) node;
  18.     }
  19.     previousNode = node;
  20.     node = node.jjtGetParent();
  21.   }
  22.   return null;
  23. }

代码示例来源：origin: pmd/pmd

  1. /**
  2.  * Search the list of thrown exceptions for Exception
  3.  */
  4. private void checkExceptions(Node method, Object o) {
  5.   List<ASTName> exceptionList = Collections.emptyList();
  6.   ASTNameList nameList = method.getFirstChildOfType(ASTNameList.class);
  7.   if (nameList != null) {
  8.     exceptionList = nameList.findDescendantsOfType(ASTName.class);
  9.   }
  10.   if (!exceptionList.isEmpty()) {
  11.     evaluateExceptions(exceptionList, o);
  12.   }
  13. }

代码示例来源：origin: pmd/pmd

  1. private ASTClassOrInterfaceType getTypeOfPrimaryPrefix(ASTPrimarySuffix node) {
  2.     return node.jjtGetParent().getFirstChildOfType(ASTPrimaryPrefix.class)
  3.         .getFirstDescendantOfType(ASTClassOrInterfaceType.class);
  4.   }
  5. }

代码示例来源：origin: pmd/pmd

  1. private boolean isLocalVariableTypeInferred() {
  2.   if (isResourceDeclaration()) {
  3.     // covers "var" in try-with-resources
  4.     return jjtGetParent().getFirstChildOfType(ASTType.class) == null;
  5.   } else if (getNthParent(2) instanceof ASTLocalVariableDeclaration) {
  6.     // covers "var" as local variables and in for statements
  7.     return getNthParent(2).getFirstChildOfType(ASTType.class) == null;
  8.   }
  9.   return false;
  10. }

代码示例来源：origin: pmd/pmd

  1. private boolean isLambdaTypeInferred() {
  2.   return getNthParent(3) instanceof ASTLambdaExpression
  3.       && jjtGetParent().getFirstChildOfType(ASTType.class) == null;
  4. }

代码示例来源：origin: pmd/pmd

  1. public static List<JavaTypeDefinition> getMethodExplicitTypeArugments(Node node) {
  2.     ASTMemberSelector memberSelector = node.getFirstChildOfType(ASTMemberSelector.class);
  3.     if (memberSelector == null) {
  4.       return Collections.emptyList();
  5.     }
  7.     ASTTypeArguments typeArguments = memberSelector.getFirstChildOfType(ASTTypeArguments.class);
  8.     if (typeArguments == null) {
  9.       return Collections.emptyList();
  10.     }
  12.     List<JavaTypeDefinition> result = new ArrayList<>();
  14.     for (int childIndex = 0; childIndex < typeArguments.jjtGetNumChildren(); ++childIndex) {
  15.       result.add(((TypeNode) typeArguments.jjtGetChild(childIndex)).getTypeDefinition());
  16.     }
  18.     return result;
  19.   }
  20. }

代码示例来源：origin: pmd/pmd

  1. public ASTDatatype getTypeNode() {
  2.   if (jjtGetParent() instanceof ASTFormalParameter) {
  3.     return ((ASTFormalParameter) jjtGetParent()).getTypeNode();
  4.   } else {
  5.     Node n = jjtGetParent().jjtGetParent();
  6.     if (n instanceof ASTVariableOrConstantDeclaration || n instanceof ASTFieldDeclaration) {
  7.       return n.getFirstChildOfType(ASTDatatype.class);
  8.     }
  9.   }
  10.   throw new RuntimeException(
  11.       "Don't know how to get the type for anything other than ASTLocalVariableDeclaration/ASTFormalParameter/ASTFieldDeclaration");
  12. }

代码示例来源：origin: pmd/pmd

  1. /**
  2.  * Gets a list of NameDeclarations for all the fields that have type
  3.  * ExpectedException and have a Rule annotation.
  4.  *
  5.  * @param classScope
  6.  *            The class scope to search for
  7.  * @return See description
  8.  */
  9. private Map<String, List<NameOccurrence>> getRuleAnnotatedExpectedExceptions(Scope classScope) {
  10.   Map<String, List<NameOccurrence>> result = new HashMap<>();
  11.   Map<NameDeclaration, List<NameOccurrence>> decls = classScope.getDeclarations();
  12.   for (Map.Entry<NameDeclaration, List<NameOccurrence>> entry : decls.entrySet()) {
  13.     Node parent = entry.getKey().getNode().jjtGetParent().jjtGetParent().jjtGetParent();
  14.     if (parent.hasDescendantOfType(ASTMarkerAnnotation.class)
  15.         && parent.getFirstChildOfType(ASTFieldDeclaration.class) != null) {
  16.       String annot = parent.getFirstDescendantOfType(ASTMarkerAnnotation.class).jjtGetChild(0).getImage();
  17.       if (!"Rule".equals(annot) && !"org.junit.Rule".equals(annot)) {
  18.         continue;
  19.       }
  20.       Node type = parent.getFirstDescendantOfType(ASTReferenceType.class);
  21.       if (!"ExpectedException".equals(type.jjtGetChild(0).getImage())) {
  22.         continue;
  23.       }
  24.       result.put(entry.getKey().getName(), entry.getValue());
  25.     }
  26.   }
  27.   return result;
  28. }

代码示例来源：origin: pmd/pmd

  1. /**
  2.  * Report usages of assignments.
  3.  *
  4.  * @param checkIncrement true: check only '+=' and '-=',
  5.  *                       false: check all other assignments
  6.  * @param ignoreFlags    which statements should be ignored
  7.  */
  8. private void checkAssignments(Object data, Set<String> loopVariables, ASTStatement loopBody, boolean checkIncrement, IgnoreFlags... ignoreFlags) {
  9.   for (ASTAssignmentOperator operator : loopBody.findDescendantsOfType(ASTAssignmentOperator.class)) {
  10.     // check if the current operator is an assign-increment or assign-decrement operator
  11.     final String operatorImage = operator.getImage();
  12.     final boolean isIncrement = "+=".equals(operatorImage) || "-=".equals(operatorImage);
  13.     if (isIncrement != checkIncrement) {
  14.       // wrong type of operator
  15.       continue;
  16.     }
  17.     if (ignoreNode(operator, loopBody, ignoreFlags)) {
  18.       continue;
  19.     }
  20.     final ASTPrimaryExpression primaryExpression = operator.jjtGetParent().getFirstChildOfType(ASTPrimaryExpression.class);
  21.     checkVariable(data, loopVariables, singleVariableName(primaryExpression));
  22.   }
  23. }

代码示例来源：origin: pmd/pmd

  1. /**
  2.  * This method can be called on a prefix
  3.  */
  4. private ASTArguments getSuffixMethodArgs(Node node) {
  5.   Node prefix = node.jjtGetParent();
  6.   if (prefix instanceof ASTPrimaryPrefix
  7.       && prefix.jjtGetParent().jjtGetNumChildren() >= 2) {
  8.     return prefix.jjtGetParent().jjtGetChild(1).getFirstChildOfType(ASTArguments.class);
  9.   }
  10.   return null;
  11. }

代码示例来源：origin: pmd/pmd

  1. private ASTClassOrInterfaceType getTypeOfMethodCall(ASTPrimarySuffix node) {
  2.   ASTClassOrInterfaceType type = null;
  3.   ASTName methodName = node.jjtGetParent().getFirstChildOfType(ASTPrimaryPrefix.class)
  4.       .getFirstChildOfType(ASTName.class);
  5.   if (methodName != null) {
  6.     ClassScope classScope = node.getScope().getEnclosingScope(ClassScope.class);
  7.     Map<MethodNameDeclaration, List<NameOccurrence>> methods = classScope.getMethodDeclarations();
  8.     for (Map.Entry<MethodNameDeclaration, List<NameOccurrence>> e : methods.entrySet()) {
  9.       if (e.getKey().getName().equals(methodName.getImage())) {
  10.         type = e.getKey().getNode().getFirstParentOfType(ASTMethodDeclaration.class)
  11.             .getFirstChildOfType(ASTResultType.class)
  12.             .getFirstDescendantOfType(ASTClassOrInterfaceType.class);
  13.         break;
  14.       }
  15.     }
  16.   }
  17.   return type;
  18. }

代码示例来源：origin: pmd/pmd

  1. private ASTTypeParameter getTypeParameterDeclaration(Node startNode, String image) {
  2.   for (Node parent = startNode.jjtGetParent(); parent != null; parent = parent.jjtGetParent()) {
  3.     ASTTypeParameters typeParameters = null;
  4.     if (parent instanceof ASTTypeParameters) { // if type parameter defined in the same < >
  5.       typeParameters = (ASTTypeParameters) parent;
  6.     } else if (parent instanceof ASTConstructorDeclaration
  7.         || parent instanceof ASTMethodDeclaration
  8.         || parent instanceof ASTClassOrInterfaceDeclaration) {
  9.       typeParameters = parent.getFirstChildOfType(ASTTypeParameters.class);
  10.     }
  11.     if (typeParameters != null) {
  12.       for (int index = 0; index < typeParameters.jjtGetNumChildren(); ++index) {
  13.         String imageToCompareTo = typeParameters.jjtGetChild(index).getImage();
  14.         if (imageToCompareTo != null && imageToCompareTo.equals(image)) {
  15.           return (ASTTypeParameter) typeParameters.jjtGetChild(index);
  16.         }
  17.       }
  18.     }
  19.   }
  20.   return null;
  21. }

代码示例来源：origin: pmd/pmd

  1. private void setVariableNameIfExists(Node node) {
  2.     if (node instanceof ASTFieldDeclaration) {
  3.       variableName = getVariableNames((ASTFieldDeclaration) node);
  4.     } else if (node instanceof ASTLocalVariableDeclaration) {
  5.       variableName = getVariableNames((ASTLocalVariableDeclaration) node);
  6.     } else if (node instanceof ASTVariableDeclarator) {
  7.       variableName = node.jjtGetChild(0).getImage();
  8.     } else if (node instanceof ASTVariableDeclaratorId) {
  9.       variableName = node.getImage();
  10.     } else if (node instanceof ASTFormalParameter) {
  11.       setVariableNameIfExists(node.getFirstChildOfType(ASTVariableDeclaratorId.class));
  12.     } else {
  13.       variableName = "";
  14.     }
  15.   }
  16. }

代码示例来源：origin: pmd/pmd

  1. private boolean doesNodeContainJUnitAnnotation(Node node, String annotationTypeClassName) {
  2.   List<ASTAnnotation> annotations = node.findDescendantsOfType(ASTAnnotation.class);
  3.   for (ASTAnnotation annotation : annotations) {
  4.     Node annotationTypeNode = annotation.jjtGetChild(0);
  5.     TypeNode annotationType = (TypeNode) annotationTypeNode;
  6.     if (annotationType.getType() == null) {
  7.       ASTName name = annotationTypeNode.getFirstChildOfType(ASTName.class);
  8.       if (name != null && (name.hasImageEqualTo("Test") || name.hasImageEqualTo(annotationTypeClassName))) {
  9.         return true;
  10.       }
  11.     } else if (TypeHelper.isA(annotationType, annotationTypeClassName)) {
  12.       return true;
  13.     }
  14.   }
  15.   return false;
  16. }

代码示例来源：origin: pmd/pmd

  1. public void check(Object ctx, ASTArguments node) {
  2.   if (node.getArgumentCount() == argumentsCount
  3.       && node.getNthParent(2) instanceof ASTPrimaryExpression) {
  4.     ASTPrimaryPrefix primaryPrefix = node.getNthParent(2).getFirstChildOfType(ASTPrimaryPrefix.class);
  5.     if (primaryPrefix != null) {
  6.       ASTName name = primaryPrefix.getFirstChildOfType(ASTName.class);
  7.       if (name != null && name.hasImageEqualTo(this.assertionName)) {
  8.         if (isException(node)) {
  9.           return;
  10.         }
  11.         JUnitAssertionsShouldIncludeMessageRule.this.addViolation(ctx, name);
  12.       }
  13.     }
  14.   }
  15. }

代码示例来源：origin: pmd/pmd

  1. private int getConstructorAppendsLength(final Node node) {
  2.   final Node parent = node.getFirstParentOfType(ASTVariableDeclarator.class);
  3.   int size = 0;
  4.   if (parent != null) {
  5.     final Node initializer = parent.getFirstChildOfType(ASTVariableInitializer.class);
  6.     if (initializer != null) {
  7.       final Node primExp = initializer.getFirstDescendantOfType(ASTPrimaryExpression.class);
  8.       if (primExp != null) {
  9.         for (int i = 0; i < primExp.jjtGetNumChildren(); i++) {
  10.           final Node sn = primExp.jjtGetChild(i);
  11.           if (!(sn instanceof ASTPrimarySuffix) || sn.getImage() != null) {
  12.             continue;
  13.           }
  14.           size += processNode(sn);
  15.         }
  16.       }
  17.     }
  18.   }
  19.   return size;
  20. }

代码示例来源：origin: pmd/pmd

  1. @Override
  2. public Object visit(ASTVariableDeclarator node, Object data) {
  3.   if (count > 1) {
  4.     return super.visit(node, data);
  5.   }
  6.   ASTType type = node.jjtGetParent().getFirstChildOfType(ASTType.class);
  7.   if (type != null) {
  8.     Node reftypeNode = type.jjtGetChild(0);
  9.     if (reftypeNode instanceof ASTReferenceType) {
  10.       Node classOrIntType = reftypeNode.jjtGetChild(0);
  11.       if (classOrIntType instanceof ASTClassOrInterfaceType) {
  12.         Class<?> clazzType = ((ASTClassOrInterfaceType) classOrIntType).getType();
  13.         if (clazzType != null
  14.             && (TypeHelper.isA((ASTClassOrInterfaceType) classOrIntType, LOG4J_LOGGER_NAME)
  15.               || TypeHelper.isA((ASTClassOrInterfaceType) classOrIntType, JAVA_LOGGER_NAME)
  16.               || TypeHelper.isA((ASTClassOrInterfaceType) classOrIntType, SLF4J_LOGGER_NAME))
  17.             || clazzType == null && "Logger".equals(classOrIntType.getImage())) {
  18.           ++count;
  19.         }
  20.       }
  21.     }
  22.   }
  23.   return super.visit(node, data);
  24. }

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