Class TldRuleSet

java/org/apache/tomcat/util/descriptor/tld/TldRuleSet.java:33–500

Digester rule set for parsing Tag Library Descriptor files.

 * Digester rule set for parsing Tag Library Descriptor files.
 */
public class TldRuleSet implements RuleSet {

    /**
     * Constructs a new TldRuleSet.
     */
    public TldRuleSet() {
    }
    private static final String PREFIX = "taglib";
    private static final String VALIDATOR_PREFIX = PREFIX + "/validator";
    private static final String TAG_PREFIX = PREFIX + "/tag";
    private static final String TAGFILE_PREFIX = PREFIX + "/tag-file";
    private static final String FUNCTION_PREFIX = PREFIX + "/function";

    @Override
    public void addRuleInstances(Digester digester) {

        digester.addCallMethod(PREFIX + "/tlibversion", "setTlibVersion", 0);
        digester.addCallMethod(PREFIX + "/tlib-version", "setTlibVersion", 0);
        digester.addCallMethod(PREFIX + "/jspversion", "setJspVersion", 0);
        digester.addCallMethod(PREFIX + "/jsp-version", "setJspVersion", 0);
        digester.addRule(PREFIX, new Rule() {
            // for TLD 2.0 and later, jsp-version is set by version attribute
            @Override
            public void begin(String namespace, String name, Attributes attributes) {
                TaglibXml taglibXml = (TaglibXml) digester.peek();
                taglibXml.setJspVersion(attributes.getValue("version"));

                StringBuilder code = digester.getGeneratedCode();
                if (code != null) {
                    code.append(digester.toVariableName(taglibXml)).append(".setJspVersion(\"");
                    code.append(attributes.getValue("version")).append("\");");
                    code.append(System.lineSeparator());
                }
            }
        });
        digester.addCallMethod(PREFIX + "/shortname", "setShortName", 0);
        digester.addCallMethod(PREFIX + "/short-name", "setShortName", 0);

        // common rules
        digester.addCallMethod(PREFIX + "/uri", "setUri", 0);
        digester.addCallMethod(PREFIX + "/info", "setInfo", 0);
        digester.addCallMethod(PREFIX + "/description", "setInfo", 0);
        digester.addCallMethod(PREFIX + "/listener/listener-class", "addListener", 0);

        // validator
        digester.addObjectCreate(VALIDATOR_PREFIX, ValidatorXml.class.getName());
        digester.addCallMethod(VALIDATOR_PREFIX + "/validator-class", "setValidatorClass", 0);
        digester.addCallMethod(VALIDATOR_PREFIX + "/init-param", "addInitParam", 2);
        digester.addCallParam(VALIDATOR_PREFIX + "/init-param/param-name", 0);
        digester.addCallParam(VALIDATOR_PREFIX + "/init-param/param-value", 1);
        digester.addSetNext(VALIDATOR_PREFIX, "setValidator", ValidatorXml.class.getName());


        // tag
        digester.addObjectCreate(TAG_PREFIX, TagXml.class.getName());
        addDescriptionGroup(digester, TAG_PREFIX);
        digester.addCallMethod(TAG_PREFIX + "/name", "setName", 0);
        digester.addCallMethod(TAG_PREFIX + "/tagclass", "setTagClass", 0);