Examples with XPath org.antlr.v4.runtime.tree.xpath.XPath used on opensource projects

Example 1 with XPath

use of org.antlr.v4.runtime.tree.xpath.XPath in project JsoupXpath by zhegexiaohuozi.

the class JXDocument method selN.

public List<JXNode> selN(String xpath) throws XpathSyntaxErrorException {
    List<JXNode> finalRes = new LinkedList<>();
    try {
        CharStream input = CharStreams.fromString(xpath);
        XpathLexer lexer = new XpathLexer(input);
        CommonTokenStream tokens = new CommonTokenStream(lexer);
        XpathParser parser = new XpathParser(tokens);
        parser.setErrorHandler(new DoFailOnErrorHandler());
        ParseTree tree = parser.main();
        XpathProcessor processor = new XpathProcessor(elements);
        XValue calRes = processor.visit(tree);
        if (calRes.isElements()) {
            for (Element el : calRes.asElements()) {
                finalRes.add(JXNode.e(el));
            }
        } else if (calRes.isList()) {
            for (String str : calRes.asList()) {
                finalRes.add(JXNode.t(str));
            }
        }
    } catch (Exception e) {
        String msg = "Please check the syntax of your xpath expr, ";
        throw new XpathSyntaxErrorException(msg + ExceptionUtils.getRootCauseMessage(e), e);
    }
    return finalRes;
}

Example 2 with XPath

use of org.antlr.v4.runtime.tree.xpath.XPath in project antlr4 by tunnelvisionlabs.

the class ParseTreePattern method findAll.

/**
 * Find all nodes using XPath and then try to match those subtrees against
 * this tree pattern.
 *
 * @param tree The {@link ParseTree} to match against this pattern.
 * @param xpath An expression matching the nodes
 *
 * @return A collection of {@link ParseTreeMatch} objects describing the
 * successful matches. Unsuccessful matches are omitted from the result,
 * regardless of the reason for the failure.
 */
@NotNull
public List<ParseTreeMatch> findAll(@NotNull ParseTree tree, @NotNull String xpath) {
    Collection<ParseTree> subtrees = XPath.findAll(tree, xpath, matcher.getParser());
    List<ParseTreeMatch> matches = new ArrayList<ParseTreeMatch>();
    for (ParseTree t : subtrees) {
        ParseTreeMatch match = match(t);
        if (match.succeeded()) {
            matches.add(match);
        }
    }
    return matches;
}

Example 3 with XPath

use of org.antlr.v4.runtime.tree.xpath.XPath in project antlr4 by antlr.

the class ParseTreePattern method findAll.

/**
 * Find all nodes using XPath and then try to match those subtrees against
 * this tree pattern.
 *
 * @param tree The {@link ParseTree} to match against this pattern.
 * @param xpath An expression matching the nodes
 *
 * @return A collection of {@link ParseTreeMatch} objects describing the
 * successful matches. Unsuccessful matches are omitted from the result,
 * regardless of the reason for the failure.
 */
public List<ParseTreeMatch> findAll(ParseTree tree, String xpath) {
    Collection<ParseTree> subtrees = XPath.findAll(tree, xpath, matcher.getParser());
    List<ParseTreeMatch> matches = new ArrayList<ParseTreeMatch>();
    for (ParseTree t : subtrees) {
        ParseTreeMatch match = match(t);
        if (match.succeeded()) {
            matches.add(match);
        }
    }
    return matches;
}

Example 4 with XPath

use of org.antlr.v4.runtime.tree.xpath.XPath in project antlr4 by tunnelvisionlabs.

the class TestXPath method getNodeStrings.

public List<String> getNodeStrings(String input, String xpath, String startRuleName, String parserName, String lexerName) throws Exception {
    Tuple2<Parser, Lexer> pl = getParserAndLexer(input, parserName, lexerName);
    Parser parser = pl.getItem1();
    ParseTree tree = execStartRule(startRuleName, parser);
    List<String> nodes = new ArrayList<String>();
    for (ParseTree t : XPath.findAll(tree, xpath, parser)) {
        if (t instanceof RuleContext) {
            RuleContext r = (RuleContext) t;
            nodes.add(parser.getRuleNames()[r.getRuleIndex()]);
        } else {
            TerminalNode token = (TerminalNode) t;
            nodes.add(token.getText());
        }
    }
    return nodes;
}

Example 5 with XPath

use of org.antlr.v4.runtime.tree.xpath.XPath in project antlr4 by antlr.

the class TestXPath method getNodeStrings.

public List<String> getNodeStrings(String input, String xpath, String startRuleName, String parserName, String lexerName) throws Exception {
    Pair<Parser, Lexer> pl = getParserAndLexer(input, parserName, lexerName);
    Parser parser = pl.a;
    ParseTree tree = execStartRule(startRuleName, parser);
    List<String> nodes = new ArrayList<String>();
    for (ParseTree t : XPath.findAll(tree, xpath, parser)) {
        if (t instanceof RuleContext) {
            RuleContext r = (RuleContext) t;
            nodes.add(parser.getRuleNames()[r.getRuleIndex()]);
        } else {
            TerminalNode token = (TerminalNode) t;
            nodes.add(token.getText());
        }
    }
    return nodes;
}