org.springframework.expression.spel.ast

Class OperatorNot

  • All Implemented Interfaces:
    Opcodes, SpelNode


    public class OperatorNot
    extends SpelNodeImpl
    Represents a NOT operation.
    Since:
    3.0
    Author:
    Andy Clement, Mark Fisher, Oliver Becker
    • Constructor Detail

      • OperatorNot

        public OperatorNot(int pos,
                           SpelNodeImpl operand)
    • Method Detail

      • toStringAST

        public java.lang.String toStringAST()
        Description copied from interface: SpelNode
        Return the string form the this AST node.
        Returns:
        the string form
      • isCompilable

        public boolean isCompilable()
        Description copied from class: SpelNodeImpl
        Check whether a node can be compiled to bytecode. The reasoning in each node may be different but will typically involve checking whether the exit type descriptor of the node is known and any relevant child nodes are compilable.
        Overrides:
        isCompilable in class SpelNodeImpl
        Returns:
        true if this node can be compiled to bytecode
      • generateCode

        public void generateCode(MethodVisitor mv,
                                 CodeFlow cf)
        Description copied from class: SpelNodeImpl
        Generate the bytecode for this node into the supplied visitor. Context info about the current expression being compiled is available in the codeflow object. For example it will include information about the type of the object currently on the stack.
        Overrides:
        generateCode in class SpelNodeImpl
        Parameters:
        mv - the ASM MethodVisitor into which code should be generated
        cf - a context object with info about what is on the stack