| /* |
| * 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. |
| */ |
| package org.apache.commons.jexl3.parser; |
| |
| /** |
| * Identifiers, variables, ie symbols. |
| */ |
| public class ASTIdentifier extends JexlNode { |
| protected String name = null; |
| protected int symbol = -1; |
| protected int flags = 0; |
| |
| /** The redefined variable flag. */ |
| private static final int REDEFINED = 0; |
| /** The shaded variable flag. */ |
| private static final int SHADED = 1; |
| /** The captured variable flag. */ |
| private static final int CAPTURED = 2; |
| |
| ASTIdentifier(final int id) { |
| super(id); |
| } |
| |
| ASTIdentifier(final Parser p, final int id) { |
| super(p, id); |
| } |
| |
| @Override |
| public String toString() { |
| return name; |
| } |
| |
| void setSymbol(final String identifier) { |
| if (identifier.charAt(0) == '#') { |
| symbol = Integer.parseInt(identifier.substring(1)); |
| } |
| name = identifier; |
| } |
| |
| void setSymbol(final int r, final String identifier) { |
| symbol = r; |
| name = identifier; |
| } |
| |
| public int getSymbol() { |
| return symbol; |
| } |
| |
| /** |
| * Sets the value of a flag in a mask. |
| * @param ordinal the flag ordinal |
| * @param mask the flags mask |
| * @param value true or false |
| * @return the new flags mask value |
| */ |
| private static int set(final int ordinal, final int mask, final boolean value) { |
| return value? mask | (1 << ordinal) : mask & ~(1 << ordinal); |
| } |
| |
| /** |
| * Checks the value of a flag in the mask. |
| * @param ordinal the flag ordinal |
| * @param mask the flags mask |
| * @return the mask value with this flag or-ed in |
| */ |
| private static boolean isSet(final int ordinal, final int mask) { |
| return (mask & 1 << ordinal) != 0; |
| } |
| |
| public void setRedefined(final boolean f) { |
| flags = set(REDEFINED, flags, f); |
| } |
| |
| public boolean isRedefined() { |
| return isSet(REDEFINED, flags); |
| } |
| |
| public void setShaded(final boolean f) { |
| flags = set(SHADED, flags, f); |
| } |
| |
| public boolean isShaded() { |
| return isSet(SHADED, flags); |
| } |
| |
| public void setCaptured(final boolean f) { |
| flags = set(CAPTURED, flags, f); |
| } |
| |
| public boolean isCaptured() { |
| return isSet(CAPTURED, flags); |
| } |
| |
| public String getName() { |
| return name; |
| } |
| |
| public String getNamespace() { |
| return null; |
| } |
| |
| @Override |
| public Object jjtAccept(final ParserVisitor visitor, final Object data) { |
| return visitor.visit(this, data); |
| } |
| } |