org.checkerframework.dataflow.cfg.builder.Label Maven / Gradle / Ivy

Go to download
package org.checkerframework.dataflow.cfg.builder;

/**
 * A label is used to refer to other extended nodes using a mapping from labels to extended nodes.
 * Labels get their names either from labeled statements in the source code or from internally
 * generated unique names.
 *
 * Note that this class is deliberately public, to enable users of the dataflow library to
 * customize CFG construction.
 */
public class Label {

    /** Unique id counter that incremented in {@code #uniqueName}. */
    private static int uid = 0;

    protected final String name;

    public Label(String name) {
        this.name = name;
    }

    public Label() {
        this.name = uniqueName();
    }

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

    /**
     * Return a new unique label name that cannot be confused with a Java source code label.
     *
     * @return a new unique label name
     */
    private static String uniqueName() {
        return "%L" + uid++;
    }
}