com.itextpdf.styledxmlparser.jsoup.select.StructuralEvaluator Maven / Gradle / Ivy

Go to download
Show more of this group Show more artifacts with this name
Show all versions of styled-xml-parser Show documentation
Styled XML parser is used by iText7 modules to parse HTML and XML
The newest version!
/*
    This file is part of jsoup, see NOTICE.txt in the root of the repository.
    It may contain modifications beyond the original version.
*/
package com.itextpdf.styledxmlparser.jsoup.select;

import com.itextpdf.commons.utils.MessageFormatUtil;
import com.itextpdf.styledxmlparser.jsoup.nodes.Element;

/**
 * Base structural evaluator.
 */
abstract class StructuralEvaluator extends Evaluator {
    Evaluator evaluator;

    static class Root extends Evaluator {
        public boolean matches(Element root, Element element) {
            return root == element;
        }
    }

    static class Has extends StructuralEvaluator {
        public Has(Evaluator evaluator) {
            this.evaluator = evaluator;
        }

        public boolean matches(Element root, Element element) {
            for (Element e : element.getAllElements()) {
                if (e != element && evaluator.matches(element, e))
                    return true;
            }
            return false;
        }

        @Override
        public String toString() {
            return MessageFormatUtil.format(":has({0})", evaluator);
        }
    }

    static class Not extends StructuralEvaluator {
        public Not(Evaluator evaluator) {
            this.evaluator = evaluator;
        }

        public boolean matches(Element root, Element node) {
            return !evaluator.matches(root, node);
        }

        @Override
        public String toString() {
            return MessageFormatUtil.format(":not({0})", evaluator);
        }
    }

    static class Parent extends StructuralEvaluator {
        public Parent(Evaluator evaluator) {
            this.evaluator = evaluator;
        }

        public boolean matches(Element root, Element element) {
            if (root == element)
                return false;

            Element parent = (Element) element.parent();
            while (parent != null) {
                if (evaluator.matches(root, parent))
                    return true;
                if (parent == root)
                    break;
                parent = (Element) parent.parent();
            }
            return false;
        }

        @Override
        public String toString() {
            return MessageFormatUtil.format("{0} ", evaluator);
        }
    }

    static class ImmediateParent extends StructuralEvaluator {
        public ImmediateParent(Evaluator evaluator) {
            this.evaluator = evaluator;
        }

        public boolean matches(Element root, Element element) {
            if (root == element)
                return false;

            Element parent = (Element) element.parent();
            return parent != null && evaluator.matches(root, parent);
        }

        @Override
        public String toString() {
            return MessageFormatUtil.format("{0} > ", evaluator);
        }
    }

    static class PreviousSibling extends StructuralEvaluator {
        public PreviousSibling(Evaluator evaluator) {
            this.evaluator = evaluator;
        }

        public boolean matches(Element root, Element element) {
            if (root == element)
                return false;

            Element prev = element.previousElementSibling();

            while (prev != null) {
                if (evaluator.matches(root, prev))
                    return true;

                prev = prev.previousElementSibling();
            }
            return false;
        }

        @Override
        public String toString() {
            return MessageFormatUtil.format("{0} ~ ", evaluator);
        }
    }

    static class ImmediatePreviousSibling extends StructuralEvaluator {
        public ImmediatePreviousSibling(Evaluator evaluator) {
            this.evaluator = evaluator;
        }

        public boolean matches(Element root, Element element) {
            if (root == element)
                return false;

            Element prev = element.previousElementSibling();
            return prev != null && evaluator.matches(root, prev);
        }

        @Override
        public String toString() {
            return MessageFormatUtil.format("{0} + ", evaluator);
        }
    }
}