Package org.apache.groovy.ast.tools

Class ClassNodeUtils

java.lang.Object
org.apache.groovy.ast.tools.ClassNodeUtils
public class ClassNodeUtils
extends Object
Utility class for working with ClassNodes

  • Method Details

    • formatTypeName

      public static String formatTypeName​(ClassNode cNode)
      Formats a type name into a human readable version. For arrays, appends "[]" to the formatted type name of the component. For unit class nodes, uses the class node name.
      Parameters:
      cNode - the type to format
      Returns:
      a human readable version of the type name (java.lang.String[] for example)

    • addGeneratedMethod

      public static MethodNode addGeneratedMethod​(ClassNode cNode, String name, int modifiers, ClassNode returnType, Parameter[] parameters, ClassNode[] exceptions, Statement code)
      Return an existing method if one exists or else create a new method and mark it as @Generated.
      See Also:
      ClassNode.addMethod(String, int, ClassNode, Parameter[], ClassNode[], Statement)

    • addGeneratedMethod

      public static void addGeneratedMethod​(ClassNode cNode, MethodNode mNode)
      Add a method and mark it as @Generated.
      See Also:
      ClassNode.addMethod(MethodNode)

    • addGeneratedMethod

      public static void addGeneratedMethod​(ClassNode cNode, MethodNode mNode, boolean skipChecks)
      Add a method and mark it as @Generated.
      See Also:
      ClassNode.addMethod(MethodNode)

    • addGeneratedInnerClass

      public static void addGeneratedInnerClass​(ClassNode cNode, ClassNode inner)
      Add an inner class that is marked as @Generated.
      See Also:
      ModuleNode.addClass(ClassNode)

    • addGeneratedConstructor

      public static ConstructorNode addGeneratedConstructor​(ClassNode classNode, int modifiers, Parameter[] parameters, ClassNode[] exceptions, Statement code)
      Add a method that is marked as @Generated.
      See Also:
      ClassNode.addConstructor(int, Parameter[], ClassNode[], Statement)

    • addGeneratedConstructor

      public static void addGeneratedConstructor​(ClassNode classNode, ConstructorNode consNode)
      Add a method that is marked as @Generated.
      See Also:
      ClassNode.addConstructor(ConstructorNode)

    • getDeclaredMethodsFromSuper

      public static Map<String,​MethodNode> getDeclaredMethodsFromSuper​(ClassNode cNode)
      Add methods from the super class.
      Parameters:
      cNode - The ClassNode
      Returns:
      A map of methods

    • addDeclaredMethodsFromInterfaces

      public static void addDeclaredMethodsFromInterfaces​(ClassNode cNode, Map<String,​MethodNode> methodsMap)
      Adds methods from all interfaces. Existing entries in the methods map take precedence. Methods from interfaces visited early take precedence over later ones.
      Parameters:
      cNode - The ClassNode
      methodsMap - A map of existing methods to alter

    • getDeclaredMethodsFromInterfaces

      public static Map<String,​MethodNode> getDeclaredMethodsFromInterfaces​(ClassNode cNode)
      Gets methods from all interfaces. Methods from interfaces visited early take precedence over later ones.
      Parameters:
      cNode - The ClassNode
      Returns:
      A map of methods

    • addDeclaredMethodsFromAllInterfaces

      public static void addDeclaredMethodsFromAllInterfaces​(ClassNode cNode, Map<String,​MethodNode> methodsMap)
      Adds methods from interfaces and parent interfaces. Existing entries in the methods map take precedence. Methods from interfaces visited early take precedence over later ones.
      Parameters:
      cNode - The ClassNode
      methodsMap - A map of existing methods to alter

    • hasPossibleStaticMethod

      public static boolean hasPossibleStaticMethod​(ClassNode cNode, String name, Expression arguments, boolean trySpread)
      Returns true if the given method has a possibly matching static method with the given name and arguments. Handles default arguments and optionally spread expressions.
      Parameters:
      cNode - the ClassNode of interest
      name - the name of the method of interest
      arguments - the arguments to match against
      trySpread - whether to try to account for SpreadExpressions within the arguments
      Returns:
      true if a matching method was found

    • hasPossibleStaticProperty

      public static boolean hasPossibleStaticProperty​(ClassNode cNode, String methodName)
      Return true if we have a static accessor

    • getPropNameForAccessor

      public static String getPropNameForAccessor​(String accessorName)
      Returns the property name, e.g. age, given an accessor name, e.g. getAge. Returns the original if a valid prefix cannot be removed.
      Parameters:
      accessorName - the accessor name of interest, e.g. getAge
      Returns:
      the property name, e.g. age, or original if not a valid property accessor name

    • isValidAccessorName

      public static boolean isValidAccessorName​(String accessorName)
      Detect whether the given accessor name starts with "get", "set" or "is" followed by at least one character.
      Parameters:
      accessorName - the accessor name of interest, e.g. getAge
      Returns:
      true if a valid prefix is found

    • hasStaticProperty

      public static boolean hasStaticProperty​(ClassNode cNode, String propName)

    • getStaticProperty

      public static PropertyNode getStaticProperty​(ClassNode cNode, String propName)
      Detect whether a static property with the given name is within the class or a super class.
      Parameters:
      cNode - the ClassNode of interest
      propName - the property name
      Returns:
      the static property if found or else null

    • isInnerClass

      public static boolean isInnerClass​(ClassNode cNode)
      Detect whether a given ClassNode is a inner class (non-static).
      Parameters:
      cNode - the ClassNode of interest
      Returns:
      true if the given node is a (non-static) inner class, else false

    • hasNoArgConstructor

      public static boolean hasNoArgConstructor​(ClassNode cNode)

    • hasExplicitConstructor

      public static boolean hasExplicitConstructor​(AbstractASTTransformation xform, ClassNode cNode)
      Determine if an explicit (non-generated) constructor is in the class.
      Parameters:
      xform - if non null, add an error if an explicit constructor is found
      cNode - the type of the containing class
      Returns:
      true if an explicit (non-generated) constructor was found

    • samePackageName

      public static boolean samePackageName​(ClassNode first, ClassNode second)
      Determine if the given ClassNode values have the same package name.
      Parameters:
      first - a ClassNode
      second - a ClassNode
      Returns:
      true if both given nodes have the same package name
      Throws:
      NullPointerException - if either of the given nodes are null

    • getField

      public static FieldNode getField​(ClassNode classNode, String fieldName)
      Return the (potentially inherited) field of the classnode.
      Parameters:
      classNode - the classnode
      fieldName - the name of the field
      Returns:
      the field or null if not found

    • isSubtype

      public static boolean isSubtype​(ClassNode maybeSuperclassOrInterface, ClassNode candidateChild)