import com.sun.source.doctree.AttributeTree; //导入依赖的package包/类
@Override
public Void visitStartElement(StartElementTree node, Void p) {
    print("<");
    print(node.getName());
    java.util.List<? extends DocTree> attrs = node.getAttributes();
    if (!attrs.isEmpty()) {
        print(" ");
        for (DocTree docTree : attrs) {
            doAccept((DCTree)docTree);
        }
        DocTree last = attrs.get(attrs.size() - 1);
        if (node.isSelfClosing() && last instanceof AttributeTree
                && ((AttributeTree) last).getValueKind() == ValueKind.UNQUOTED)
            print(" ");
    }
    if (node.isSelfClosing())
        print("/");
    print(">");
    return null;
}
 

import com.sun.source.doctree.AttributeTree; //导入依赖的package包/类
private void validateHtml4Attrs(AttributeTree tree, Name name, AttrKind k) {
    switch (k) {
        case ALL:
        case HTML4:
            break;

        case INVALID:
            env.messages.error(HTML, tree, "dc.attr.unknown", name);
            break;

        case OBSOLETE:
            env.messages.warning(ACCESSIBILITY, tree, "dc.attr.obsolete", name);
            break;

        case USE_CSS:
            env.messages.warning(ACCESSIBILITY, tree, "dc.attr.obsolete.use.css", name);
            break;

        case HTML5:
            env.messages.error(HTML, tree, "dc.attr.not.supported.html4", name);
            break;
    }
}
 

import com.sun.source.doctree.AttributeTree; //导入依赖的package包/类
protected final AttributeTree rewriteChildren(AttributeTree tree) {
    AttributeTree value = tree;
    List<? extends DocTree> vl = translateDoc(tree.getValue());
    if (vl != tree.getValue()) {
        value = make.Attribute((Name) tree.getName(), tree.getValueKind(), vl);
    }
    return value;
}
 

import com.sun.source.doctree.AttributeTree; //导入依赖的package包/类
@Override
public Void visitAttribute(AttributeTree node, Void p) {
    print(node.getName());
    String quote;
    switch (node.getValueKind()) {
        case EMPTY:
            return null;
        case UNQUOTED:
            quote = "";
            break;
        case SINGLE:
            quote = "'";
            break;
        case DOUBLE:
            quote = "\"";
            break;
        default:
            throw new AssertionError();
    }
    print("=");
    print(quote);
    for (DocTree docTree : node.getValue()) {
        doAccept((DCTree)docTree);
    }
    print(quote);
    return null;
}
 

import com.sun.source.doctree.AttributeTree; //导入依赖的package包/类
private String getAttrValue(AttributeTree tree) {
    if (tree.getValue() == null)
        return null;

    StringWriter sw = new StringWriter();
    try {
        new DocPretty(sw).print(tree.getValue());
    } catch (IOException e) {
        // cannot happen
    }
    // ignore potential use of entities for now
    return sw.toString();
}
 

import com.sun.source.doctree.AttributeTree; //导入依赖的package包/类
private void checkURI(AttributeTree tree, String uri) {
    try {
        URI u = new URI(uri);
    } catch (URISyntaxException e) {
        env.messages.error(HTML, tree, "dc.invalid.uri", uri);
    }
}
 

import com.sun.source.doctree.AttributeTree; //导入依赖的package包/类
private void validateHtml5Attrs(AttributeTree tree, Name name, AttrKind k) {
    switch (k) {
        case ALL:
        case HTML5:
            break;

        case INVALID:
        case OBSOLETE:
        case USE_CSS:
        case HTML4:
            env.messages.error(HTML, tree, "dc.attr.not.supported.html5", name);
            break;
    }
}
 

import com.sun.source.doctree.AttributeTree; //导入依赖的package包/类
private void checkURI(AttributeTree tree, String uri) {
    // allow URIs beginning with javascript:, which would otherwise be rejected by the URI API.
    if (uri.startsWith("javascript:"))
        return;
    try {
        URI u = new URI(uri);
    } catch (URISyntaxException e) {
        env.messages.error(HTML, tree, "dc.invalid.uri", uri);
    }
}
 

import com.sun.source.doctree.AttributeTree; //导入依赖的package包/类
@Override
public DocTree visitAttribute(AttributeTree tree, Object p) {
    return rewriteChildren(tree);
}
 

import com.sun.source.doctree.AttributeTree; //导入依赖的package包/类
public AttributeTree Attribute(CharSequence name, AttributeTree.ValueKind vkind, List<? extends DocTree> value) {
    return docMake.at(NOPOS).newAttributeTree((Name) names.fromString(name.toString()), vkind, value);
}
 

import com.sun.source.doctree.AttributeTree; //导入依赖的package包/类
/**
 * @since 1.47
 */
@Override
public DocTree visitAttribute(AttributeTree node, Element p) {
    return docScanner.visitAttribute(node, p, null);
}
 

import com.sun.source.doctree.AttributeTree; //导入依赖的package包/类
@Override
public Void visitAttribute(AttributeTree node, List<ErrorDescription> errors) {
    return super.visitAttribute(node, errors);
}
 

import com.sun.source.doctree.AttributeTree; //导入依赖的package包/类
@Override @DefinedBy(Api.COMPILER_TREE)
public Void visitAttribute(AttributeTree tree, Consumer<DocTreePath> f) {
    String name = tree.getName().toString().toLowerCase(Locale.ENGLISH);
    switch (name) {
        // See https://www.w3.org/TR/html-markup/global-attributes.html#common.attrs.event-handler
        case "onabort":  case "onblur":  case "oncanplay":  case "oncanplaythrough":
        case "onchange":  case "onclick":  case "oncontextmenu":  case "ondblclick":
        case "ondrag":  case "ondragend":  case "ondragenter":  case "ondragleave":
        case "ondragover":  case "ondragstart":  case "ondrop":  case "ondurationchange":
        case "onemptied":  case "onended":  case "onerror":  case "onfocus":  case "oninput":
        case "oninvalid":  case "onkeydown":  case "onkeypress":  case "onkeyup":
        case "onload":  case "onloadeddata":  case "onloadedmetadata":  case "onloadstart":
        case "onmousedown":  case "onmousemove":  case "onmouseout":  case "onmouseover":
        case "onmouseup":  case "onmousewheel":  case "onpause":  case "onplay":
        case "onplaying":  case "onprogress":  case "onratechange":  case "onreadystatechange":
        case "onreset":  case "onscroll":  case "onseeked":  case "onseeking":
        case "onselect":  case "onshow":  case "onstalled":  case "onsubmit":  case "onsuspend":
        case "ontimeupdate":  case "onvolumechange":  case "onwaiting":

        // See https://www.w3.org/TR/html4/sgml/dtd.html
        // Most of the attributes that take a %Script are also defined as event handlers
        // in HTML 5. The one exception is onunload.
        // case "onchange":  case "onclick":   case "ondblclick":  case "onfocus":
        // case "onkeydown":  case "onkeypress":  case "onkeyup":  case "onload":
        // case "onmousedown":  case "onmousemove":  case "onmouseout":  case "onmouseover":
        // case "onmouseup":  case "onreset":  case "onselect":  case "onsubmit":
        case "onunload":
            f.accept(getCurrentPath());
            break;

        // See https://www.w3.org/TR/html4/sgml/dtd.html
        //     https://www.w3.org/TR/html5/
        // These are all the attributes that take a %URI or a valid URL potentially surrounded
        // by spaces
        case "action":  case "cite":  case "classid":  case "codebase":  case "data":
        case "datasrc":  case "for":  case "href":  case "longdesc":  case "profile":
        case "src":  case "usemap":
            List<? extends DocTree> value = tree.getValue();
            if (value != null && !value.isEmpty() && value.get(0).getKind() == Kind.TEXT) {
                String v = value.get(0).toString().trim().toLowerCase(Locale.ENGLISH);
                if (v.startsWith("javascript:")) {
                    f.accept(getCurrentPath());
                }
            }
            break;
    }
    return super.visitAttribute(tree, f);
}
 

import com.sun.source.doctree.AttributeTree; //导入依赖的package包/类
/**Creates the DocTree's HTML AttributeTree.
 * 
 * @param name attribute name
 * @param vkind attribute value kid
 * @param value attribute value
 * @return newly created AttributeTree
 * @since 0.124
 */
public AttributeTree Attribute(CharSequence name, AttributeTree.ValueKind vkind, List<? extends DocTree> value) {
    return delegate.Attribute(name, vkind, value);
}
 

import com.sun.source.doctree.AttributeTree; //导入依赖的package包/类
/**
 * Create a new {@code AttributeTree} object, to represent an HTML attribute in an HTML tag.
 * @param name  the name of the attribute
 * @param vkind the kind of attribute value
 * @param value the value, if any, of the attribute
 * @return an {@code AttributeTree} object
 */
AttributeTree newAttributeTree(Name name, ValueKind vkind, List<? extends DocTree> value);