Package org.jruby.ast

Class HashNode

java.lang.Object
org.jruby.ast.Node
org.jruby.ast.HashNode
All Implemented Interfaces:
ILiteralNode
public class HashNode extends Node implements ILiteralNode
A Literal Hash that can represent either a {a=&b, c=&d} type expression or the list of default values or kwarg in a method call.

  • Field Details

    • pairs

      private final List<KeyValuePair<Node,Node>> pairs

    • hasOnlySymbolKeys

      private boolean hasOnlySymbolKeys

    • hasRestKwarg

      private boolean hasRestKwarg

  • Constructor Details

    • HashNode

      public HashNode(int line)

    • HashNode

      public HashNode(int line, KeyValuePair<Node,Node> pair)

  • Method Details

    • hasOnlySymbolKeys

      public boolean hasOnlySymbolKeys()
      Returns:
      true if all elements of this hash uses symbol keys (might end up representing a kwarg).

    • isMaybeKwargs

      public boolean isMaybeKwargs()
      Is this hash looking like a keyword argument hash? Technically we do not know at the callsite
      Returns:
      true is it looks like one.

    • hasRestKwarg

      public boolean hasRestKwarg()
      Detect presence of a rest kwarg (**kw).
      Returns:
      true if it contains at least one rest kwarg.

    • hasOnlyRestKwargs

      public boolean hasOnlyRestKwargs()
      Detect whether only rest kwargs make up this hash. Common case is **a which is HashNode{[(null, a)]}. Less common is **a, **b which is HashNode{[(null, a), (null, b)].}
      Returns:
      true is only rest kwargs

    • getNodeType

      public NodeType getNodeType()
      Specified by:
      getNodeType in class Node
      Returns:
      the nodeId

    • add

      public HashNode add(KeyValuePair<Node,Node> pair)

    • accept

      public <T> T accept(NodeVisitor<T> iVisitor)
      Accept for the visitor pattern.
      Specified by:
      accept in class Node
      Parameters:
      iVisitor - the visitor

    • isEmpty

      public boolean isEmpty()

    • getPairs

      public List<KeyValuePair<Node,Node>> getPairs()

    • childNodes

      public List<Node> childNodes()
      Specified by:
      childNodes in class Node