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java/org/apache/el/parser/SimpleNode.java

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+/*
+ * Licensed to the Apache Software Foundation (ASF) under one or more
+ * contributor license agreements.  See the NOTICE file distributed with
+ * this work for additional information regarding copyright ownership.
+ * The ASF licenses this file to You under the Apache License, Version 2.0
+ * (the "License"); you may not use this file except in compliance with
+ * the License.  You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+/* Generated By:JJTree: Do not edit this line. SimpleNode.java */
+
+package org.apache.el.parser;
+
+import java.util.Arrays;
+
+import javax.el.ELException;
+import javax.el.MethodInfo;
+import javax.el.PropertyNotWritableException;
+import javax.el.ValueReference;
+
+import org.apache.el.lang.ELSupport;
+import org.apache.el.lang.EvaluationContext;
+import org.apache.el.util.MessageFactory;
+
+
+/**
+ * @author Jacob Hookom [jacob@hookom.net]
+ */
+public abstract class SimpleNode extends ELSupport implements Node {
+    protected Node parent;
+
+    protected Node[] children;
+
+    protected final int id;
+
+    protected String image;
+
+    public SimpleNode(int i) {
+        id = i;
+    }
+
+    @Override
+    public void jjtOpen() {
+        // NOOP by default
+    }
+
+    @Override
+    public void jjtClose() {
+        // NOOP by default
+    }
+
+    @Override
+    public void jjtSetParent(Node n) {
+        parent = n;
+    }
+
+    @Override
+    public Node jjtGetParent() {
+        return parent;
+    }
+
+    @Override
+    public void jjtAddChild(Node n, int i) {
+        if (children == null) {
+            children = new Node[i + 1];
+        } else if (i >= children.length) {
+            Node c[] = new Node[i + 1];
+            System.arraycopy(children, 0, c, 0, children.length);
+            children = c;
+        }
+        children[i] = n;
+    }
+
+    @Override
+    public Node jjtGetChild(int i) {
+        return children[i];
+    }
+
+    @Override
+    public int jjtGetNumChildren() {
+        return (children == null) ? 0 : children.length;
+    }
+
+    /*
+     * You can override these two methods in subclasses of SimpleNode to
+     * customize the way the node appears when the tree is dumped. If your
+     * output uses more than one line you should override toString(String),
+     * otherwise overriding toString() is probably all you need to do.
+     */
+
+    @Override
+    public String toString() {
+        if (this.image != null) {
+            return ELParserTreeConstants.jjtNodeName[id] + "[" + this.image
+                    + "]";
+        }
+        return ELParserTreeConstants.jjtNodeName[id];
+    }
+
+    @Override
+    public String getImage() {
+        return image;
+    }
+
+    public void setImage(String image) {
+        this.image = image;
+    }
+
+    @Override
+    public Class<?> getType(EvaluationContext ctx)
+            throws ELException {
+        throw new UnsupportedOperationException();
+    }
+
+    @Override
+    public Object getValue(EvaluationContext ctx)
+            throws ELException {
+        throw new UnsupportedOperationException();
+    }
+
+    @Override
+    public boolean isReadOnly(EvaluationContext ctx)
+            throws ELException {
+        return true;
+    }
+
+    @Override
+    public void setValue(EvaluationContext ctx, Object value)
+            throws ELException {
+        throw new PropertyNotWritableException(MessageFactory.get("error.syntax.set"));
+    }
+
+    @Override
+    public void accept(NodeVisitor visitor) throws Exception {
+        visitor.visit(this);
+        if (this.children != null && this.children.length > 0) {
+            for (int i = 0; i < this.children.length; i++) {
+                this.children[i].accept(visitor);
+            }
+        }
+    }
+
+    @Override
+    public Object invoke(EvaluationContext ctx, Class<?>[] paramTypes,
+            Object[] paramValues) throws ELException {
+        throw new UnsupportedOperationException();
+    }
+
+    @Override
+    public MethodInfo getMethodInfo(EvaluationContext ctx,
+            Class<?>[] paramTypes) throws ELException {
+        throw new UnsupportedOperationException();
+    }
+
+
+    @Override
+    public int hashCode() {
+        final int prime = 31;
+        int result = 1;
+        result = prime * result + Arrays.hashCode(children);
+        result = prime * result + id;
+        result = prime * result + ((image == null) ? 0 : image.hashCode());
+        return result;
+    }
+
+    @Override
+    public boolean equals(Object obj) {
+        if (this == obj) {
+            return true;
+        }
+        if (!(obj instanceof SimpleNode)) {
+            return false;
+        }
+        SimpleNode other = (SimpleNode) obj;
+        if (id != other.id) {
+            return false;
+        }
+        if (image == null) {
+            if (other.image != null) {
+                return false;
+            }
+        } else if (!image.equals(other.image)) {
+            return false;
+        }
+        if (!Arrays.equals(children, other.children)) {
+            return false;
+        }
+        return true;
+    }
+
+    /**
+     * @since EL 2.2
+     */
+    @Override
+    public ValueReference getValueReference(EvaluationContext ctx) {
+        return null;
+    }
+
+    /**
+     * @since EL 2.2
+     */
+    @Override
+    public boolean isParametersProvided() {
+        return false;
+    }
+}