Class IfStatement

  • All Implemented Interfaces:
    Comparable<AstNode>, Iterable<Node>

    public class IfStatement
    extends AstNode
    If-else statement. Node type is Token.IF.

    IfStatement :
           if ( Expression ) Statement else Statement
           if ( Expression ) Statement
    • Constructor Detail

      • IfStatement

        public IfStatement()
      • IfStatement

        public IfStatement​(int pos)
      • IfStatement

        public IfStatement​(int pos,
                           int len)
    • Method Detail

      • getCondition

        public AstNode getCondition()
        Returns if condition
      • getThenPart

        public AstNode getThenPart()
        Returns statement to execute if condition is true
      • setThenPart

        public void setThenPart​(AstNode thenPart)
        Sets statement to execute if condition is true
        IllegalArgumentException - if thenPart is null
      • getElsePart

        public AstNode getElsePart()
        Returns statement to execute if condition is false
      • setElsePart

        public void setElsePart​(AstNode elsePart)
        Sets statement to execute if condition is false
        elsePart - statement to execute if condition is false. Can be null.
      • getElsePosition

        public int getElsePosition()
        Returns position of "else" keyword, or -1
      • setElsePosition

        public void setElsePosition​(int elsePosition)
        Sets position of "else" keyword, -1 if not present
      • getLp

        public int getLp()
        Returns left paren offset
      • setLp

        public void setLp​(int lp)
        Sets left paren offset
      • getRp

        public int getRp()
        Returns right paren position, -1 if missing
      • setRp

        public void setRp​(int rp)
        Sets right paren position, -1 if missing
      • setParens

        public void setParens​(int lp,
                              int rp)
        Sets both paren positions
      • 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
        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 condition, the then-part, and if supplied, the else-part.
        Specified by:
        visit in class AstNode
        v - the object to call with this node and its children