Class InfixExpression

All Implemented Interfaces:
Comparable<AstNode>, Iterable<Node>
Direct Known Subclasses:
Assignment, ObjectProperty, PropertyGet, XmlDotQuery, XmlMemberGet

public class InfixExpression extends AstNode
AST node representing an infix (binary operator) expression. The operator is the node's Token type.
  • Field Details

    • left

      protected AstNode left
    • operatorPosition

      protected int operatorPosition
  • Constructor Details

    • InfixExpression

      public InfixExpression()
    • InfixExpression

      public InfixExpression(int pos)
    • InfixExpression

      public InfixExpression(int pos, int len)
    • InfixExpression

      public InfixExpression(int pos, int len, AstNode left, AstNode right)
    • InfixExpression

      public InfixExpression(AstNode left, AstNode right)
      Constructs a new InfixExpression. Updates bounds to include left and right nodes.
    • InfixExpression

      public InfixExpression(int operator, AstNode left, AstNode right, int operatorPos)
      Constructs a new InfixExpression.
      Parameters:
      operatorPos - the absolute position of the operator
  • Method Details

    • setLeftAndRight

      public void setLeftAndRight(AstNode left, AstNode right)
    • getOperator

      public int getOperator()
      Returns operator token – alias for Node.getType()
    • setOperator

      public void setOperator(int operator)
      Sets operator token – like Node.setType(int), but throws an exception if the operator is invalid.
      Throws:
      IllegalArgumentException - if operator is not a valid token code
    • getLeft

      public AstNode getLeft()
      Returns the left-hand side of the expression
    • setLeft

      public void setLeft(AstNode left)
      Sets the left-hand side of the expression, and sets its parent to this node.
      Parameters:
      left - the left-hand side of the expression
      Throws:
      IllegalArgumentException - } if left is null
    • getRight

      public AstNode getRight()
      Returns the right-hand side of the expression
      Returns:
      the right-hand side. It's usually an AstNode node, but can also be a FunctionNode representing Function expressions.
    • setRight

      public void setRight(AstNode right)
      Sets the right-hand side of the expression, and sets its parent to this node.
      Throws:
      IllegalArgumentException - } if right is null
    • getOperatorPosition

      public int getOperatorPosition()
      Returns relative offset of operator token
    • setOperatorPosition

      public void setOperatorPosition(int operatorPosition)
      Sets operator token's relative offset
      Parameters:
      operatorPosition - offset in parent of operator token
    • hasSideEffects

      public boolean hasSideEffects()
      Overrides:
      hasSideEffects in class AstNode
    • toSource

      public String toSource(int depth)
      Description copied from class: AstNode
      Emits source code for this node. Callee is responsible for calling this function recursively on children, incrementing indent as appropriate.

      Note: if the parser was in error-recovery mode, some AST nodes may have null children that are expected to be non-null when no errors are present. In this situation, the behavior of the toSource method is undefined: toSource implementations may assume that the AST node is error-free, since it is intended to be invoked only at runtime after a successful parse.

      Specified by:
      toSource in class AstNode
      Parameters:
      depth - the current recursion depth, typically beginning at 0 when called on the root node.
    • visit

      public void visit(NodeVisitor v)
      Visits this node, the left operand, and the right operand.
      Specified by:
      visit in class AstNode
      Parameters:
      v - the object to call with this node and its children