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The Checker Framework enhances Java's type system to make it more powerful and useful. This lets software developers detect and prevent errors in their Java programs. The Checker Framework includes compiler plug-ins ("checkers") that find bugs or verify their absence. It also permits you to write your own compiler plug-ins.

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package org.checkerframework.dataflow.cfg.builder;

import org.checkerframework.dataflow.analysis.Store.FlowRule;
import org.checkerframework.dataflow.cfg.builder.ExtendedNode.ExtendedNodeType;

/** An extended node of type {@link ExtendedNodeType#UNCONDITIONAL_JUMP}. */
/*package-private*/ class UnconditionalJump extends ExtendedNode {

    /** The jump target label. */
    protected final Label jumpTarget;

    /** The flow rule for this edge. */
    protected final FlowRule flowRule;

    /**
     * Construct an UnconditionalJump.
     *
     * @param jumpTarget the jump target label
     */
    public UnconditionalJump(Label jumpTarget) {
        this(jumpTarget, FlowRule.EACH_TO_EACH);
    }

    /**
     * Construct an UnconditionalJump, specifying its flow rule.
     *
     * @param jumpTarget the jump target label
     * @param flowRule the flow rule for this edge
     */
    public UnconditionalJump(Label jumpTarget, FlowRule flowRule) {
        super(ExtendedNodeType.UNCONDITIONAL_JUMP);
        assert jumpTarget != null;
        this.jumpTarget = jumpTarget;
        this.flowRule = flowRule;
    }

    @Override
    public Label getLabel() {
        return jumpTarget;
    }

    /**
     * Returns the flow rule for this edge.
     *
     * @return the flow rule for this edge
     */
    public FlowRule getFlowRule() {
        return flowRule;
    }

    /**
     * Produce a string representation.
     *
     * @return a string representation
     * @see org.checkerframework.dataflow.cfg.builder.CFGBuilder.PhaseOneResult#nodeToString
     */
    @Override
    public String toString() {
        return "JumpMarker(" + getLabel() + ")";
    }

    @Override
    public String toStringDebug() {
        return toString();
    }
}