Type Members

1.  class XPath extends AnyRef

   Represent a subset of XPath XML path syntax for use in identifying nodes in parse trees.

   Represent a subset of XPath XML path syntax for use in identifying nodes in parse trees.

   Split path into words and separators / and // via ANTLR itself then walk path elements from left to right. At each separator-word pair, find set of nodes. Next stage uses those as work list.

   The basic interface is XPath#findAll(tree, pathString, parser). But that is just shorthand for:

   `[[XPath]]` p = new `[[XPath#XPath XPath]]`(parser, pathString);
   return p.`[[#evaluate evaluate]]`(tree);
   

   See org.antlr.v4.test.TestXPath for descriptions. In short, this allows operators:

   <dl> <dt>/</dt>

   root

   <dt>//</dt>

   anywhere

   <dt>!</dt>

   invert; this must appear directly after root or anywhere operator

   </dl>

   and path elements:

   <dl> <dt>ID</dt>

   token name

   <dt>'string'</dt>

   any string literal token from the grammar

   <dt>expr</dt>

   rule name

   <dt>*</dt>

   wildcard matching any node

   </dl>

   Whitespace is not allowed.

2.  abstract class XPathElement extends AnyRef
3.  class XPathLexerErrorListener extends BaseErrorListener
4.  class XPathRuleAnywhereElement extends XPathElement

   Either rulename at start of path or ...//rulename in middle of path.

5.  class XPathRuleElement extends XPathElement
6.  class XPathTokenAnywhereElement extends XPathElement

   Either ID at start of path or ...//ID in middle of path.

7.  class XPathTokenElement extends XPathElement
8.  class XPathWildcardAnywhereElement extends XPathElement
9.  class XPathWildcardElement extends XPathElement