feat(jdk8): move files to new folder to avoid resources compiled.

jdkSrc/jdk8/com/sun/beans/decoder/ElementHandler.java

@@ -0,0 +1,224 @@
+/*
+ * Copyright (c) 2008, 2013, Oracle and/or its affiliates. All rights reserved.
+ * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
+ *
+ * This code is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU General Public License version 2 only, as
+ * published by the Free Software Foundation.  Oracle designates this
+ * particular file as subject to the "Classpath" exception as provided
+ * by Oracle in the LICENSE file that accompanied this code.
+ *
+ * This code is distributed in the hope that it will be useful, but WITHOUT
+ * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+ * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
+ * version 2 for more details (a copy is included in the LICENSE file that
+ * accompanied this code).
+ *
+ * You should have received a copy of the GNU General Public License version
+ * 2 along with this work; if not, write to the Free Software Foundation,
+ * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
+ *
+ * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
+ * or visit www.oracle.com if you need additional information or have any
+ * questions.
+ */
+package com.sun.beans.decoder;
+
+/**
+ * The base class for element handlers.
+ *
+ * @since 1.7
+ *
+ * @author Sergey A. Malenkov
+ *
+ * @see DocumentHandler
+ */
+public abstract class ElementHandler {
+    private DocumentHandler owner;
+    private ElementHandler parent;
+
+    private String id;
+
+    /**
+     * Returns the document handler that creates this element handler.
+     *
+     * @return the owner document handler
+     */
+    public final DocumentHandler getOwner() {
+        return this.owner;
+    }
+
+    /**
+     * Sets the document handler that creates this element handler.
+     * The owner document handler should be set after instantiation.
+     * Such approach is used to simplify the extensibility.
+     *
+     * @param owner  the owner document handler
+     * @see DocumentHandler#startElement
+     */
+    final void setOwner(DocumentHandler owner) {
+        if (owner == null) {
+            throw new IllegalArgumentException("Every element should have owner");
+        }
+        this.owner = owner;
+    }
+
+    /**
+     * Returns the element handler that contains this one.
+     *
+     * @return the parent element handler
+     */
+    public final ElementHandler getParent() {
+        return this.parent;
+    }
+
+    /**
+     * Sets the element handler that contains this one.
+     * The parent element handler should be set after instantiation.
+     * Such approach is used to simplify the extensibility.
+     *
+     * @param parent  the parent element handler
+     * @see DocumentHandler#startElement
+     */
+    final void setParent(ElementHandler parent) {
+        this.parent = parent;
+    }
+
+    /**
+     * Returns the value of the variable with specified identifier.
+     *
+     * @param id  the identifier
+     * @return the value of the variable
+     */
+    protected final Object getVariable(String id) {
+        if (id.equals(this.id)) {
+            ValueObject value = getValueObject();
+            if (value.isVoid()) {
+                throw new IllegalStateException("The element does not return value");
+            }
+            return value.getValue();
+        }
+        return (this.parent != null)
+                ? this.parent.getVariable(id)
+                : this.owner.getVariable(id);
+    }
+
+    /**
+     * Returns the value of the parent element.
+     *
+     * @return the value of the parent element
+     */
+    protected Object getContextBean() {
+        if (this.parent != null) {
+            ValueObject value = this.parent.getValueObject();
+            if (!value.isVoid()) {
+                return value.getValue();
+            }
+            throw new IllegalStateException("The outer element does not return value");
+        } else {
+            Object value = this.owner.getOwner();
+            if (value != null) {
+                return value;
+            }
+            throw new IllegalStateException("The topmost element does not have context");
+        }
+    }
+
+    /**
+     * Parses attributes of the element.
+     * By default, the following attribute is supported:
+     * <dl>
+     * <dt>id
+     * <dd>the identifier of the variable that is intended to store the result
+     * </dl>
+     *
+     * @param name   the attribute name
+     * @param value  the attribute value
+     */
+    public void addAttribute(String name, String value) {
+        if (name.equals("id")) { // NON-NLS: the attribute name
+            this.id = value;
+        } else {
+            throw new IllegalArgumentException("Unsupported attribute: " + name);
+        }
+    }
+
+    /**
+     * This method is called before parsing of the element's body.
+     * All attributes are parsed at this point.
+     * By default, do nothing.
+     */
+    public void startElement() {
+    }
+
+    /**
+     * This method is called after parsing of the element's body.
+     * By default, it calculates the value of this element.
+     * The following tasks are executing for any non-void value:
+     * <ol>
+     * <li>If the {@code id} attribute is set
+     * the value of the variable with the specified identifier
+     * is set to the value of this element.</li>
+     * <li>This element is used as an argument of parent element if it is possible.</li>
+     * </ol>
+     *
+     * @see #isArgument
+     */
+    public void endElement() {
+        // do nothing if no value returned
+        ValueObject value = getValueObject();
+        if (!value.isVoid()) {
+            if (this.id != null) {
+                this.owner.setVariable(this.id, value.getValue());
+            }
+            if (isArgument()) {
+                if (this.parent != null) {
+                    this.parent.addArgument(value.getValue());
+                } else {
+                    this.owner.addObject(value.getValue());
+                }
+            }
+        }
+    }
+
+    /**
+     * Adds the character that contained in this element.
+     * By default, only whitespaces are acceptable.
+     *
+     * @param ch  the character
+     */
+    public void addCharacter(char ch) {
+        if ((ch != ' ') && (ch != '\n') && (ch != '\t') && (ch != '\r')) {
+            throw new IllegalStateException("Illegal character with code " + (int) ch);
+        }
+    }
+
+    /**
+     * Adds the argument that is used to calculate the value of this element.
+     * By default, no arguments are acceptable.
+     *
+     * @param argument  the value of the element that contained in this one
+     */
+    protected void addArgument(Object argument) {
+        throw new IllegalStateException("Could not add argument to simple element");
+    }
+
+    /**
+     * Tests whether the value of this element can be used
+     * as an argument of the element that contained in this one.
+     *
+     * @return {@code true} if the value of this element can be used
+     *         as an argument of the element that contained in this one,
+     *         {@code false} otherwise
+     */
+    protected boolean isArgument() {
+        return this.id == null;
+    }
+
+    /**
+     * Returns the value of this element.
+     *
+     * @return the value of this element
+     */
+    protected abstract ValueObject getValueObject();
+}