| /* |
| * The Apache Software License, Version 1.1 |
| * |
| * |
| * Copyright (c) 1999-2003 The Apache Software Foundation. All rights |
| * reserved. |
| * |
| * Redistribution and use in source and binary forms, with or without |
| * modification, are permitted provided that the following conditions |
| * are met: |
| * |
| * 1. Redistributions of source code must retain the above copyright |
| * notice, this list of conditions and the following disclaimer. |
| * |
| * 2. Redistributions in binary form must reproduce the above copyright |
| * notice, this list of conditions and the following disclaimer in |
| * the documentation and/or other materials provided with the |
| * distribution. |
| * |
| * 3. The end-user documentation included with the redistribution, |
| * if any, must include the following acknowledgment: |
| * "This product includes software developed by the |
| * Apache Software Foundation (http://www.apache.org/)." |
| * Alternately, this acknowledgment may appear in the software itself, |
| * if and wherever such third-party acknowledgments normally appear. |
| * |
| * 4. The names "Xalan" and "Apache Software Foundation" must |
| * not be used to endorse or promote products derived from this |
| * software without prior written permission. For written |
| * permission, please contact apache@apache.org. |
| * |
| * 5. Products derived from this software may not be called "Apache", |
| * nor may "Apache" appear in their name, without prior written |
| * permission of the Apache Software Foundation. |
| * |
| * THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESSED OR IMPLIED |
| * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES |
| * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE |
| * DISCLAIMED. IN NO EVENT SHALL THE APACHE SOFTWARE FOUNDATION OR |
| * ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, |
| * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT |
| * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF |
| * USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND |
| * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, |
| * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT |
| * OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF |
| * SUCH DAMAGE. |
| * ==================================================================== |
| * |
| * This software consists of voluntary contributions made by many |
| * individuals on behalf of the Apache Software Foundation and was |
| * originally based on software copyright (c) 1999, Lotus |
| * Development Corporation., http://www.lotus.com. For more |
| * information on the Apache Software Foundation, please see |
| * <http://www.apache.org/>. |
| */ |
| package org.apache.xpath.compiler; |
| |
| import java.util.Hashtable; |
| |
| /** |
| * <meta name="usage" content="internal"/> |
| * Table of strings to operation code lookups. |
| */ |
| public class Keywords |
| { |
| |
| /** Table of keywords to opcode associations. */ |
| static Hashtable m_keywords = new Hashtable(); |
| |
| /** Table of axes names to opcode associations. */ |
| static Hashtable m_axisnames = new Hashtable(); |
| |
| /** Table of function name to function ID associations. */ |
| static Hashtable m_functions = new Hashtable(); |
| |
| /** Table of node type strings to opcode associations. */ |
| static Hashtable m_nodetypes = new Hashtable(); |
| |
| /** ancestor axes string. */ |
| private static final String FROM_ANCESTORS_STRING = "ancestor"; |
| |
| /** ancestor-or-self axes string. */ |
| private static final String FROM_ANCESTORS_OR_SELF_STRING = |
| "ancestor-or-self"; |
| |
| /** attribute axes string. */ |
| private static final String FROM_ATTRIBUTES_STRING = "attribute"; |
| |
| /** child axes string. */ |
| private static final String FROM_CHILDREN_STRING = "child"; |
| |
| /** descendant-or-self axes string. */ |
| private static final String FROM_DESCENDANTS_STRING = "descendant"; |
| |
| /** ancestor axes string. */ |
| private static final String FROM_DESCENDANTS_OR_SELF_STRING = |
| "descendant-or-self"; |
| |
| /** following axes string. */ |
| private static final String FROM_FOLLOWING_STRING = "following"; |
| |
| /** following-sibling axes string. */ |
| private static final String FROM_FOLLOWING_SIBLINGS_STRING = |
| "following-sibling"; |
| |
| /** parent axes string. */ |
| private static final String FROM_PARENT_STRING = "parent"; |
| |
| /** preceding axes string. */ |
| private static final String FROM_PRECEDING_STRING = "preceding"; |
| |
| /** preceding-sibling axes string. */ |
| private static final String FROM_PRECEDING_SIBLINGS_STRING = |
| "preceding-sibling"; |
| |
| /** self axes string. */ |
| private static final String FROM_SELF_STRING = "self"; |
| |
| /** namespace axes string. */ |
| private static final String FROM_NAMESPACE_STRING = "namespace"; |
| |
| /** self axes abreviated string. */ |
| private static final String FROM_SELF_ABBREVIATED_STRING = "."; |
| |
| /** comment node test string. */ |
| private static final String NODETYPE_COMMENT_STRING = "comment"; |
| |
| /** text node test string. */ |
| private static final String NODETYPE_TEXT_STRING = "text"; |
| |
| /** processing-instruction node test string. */ |
| private static final String NODETYPE_PI_STRING = "processing-instruction"; |
| |
| /** Any node test string. */ |
| private static final String NODETYPE_NODE_STRING = "node"; |
| |
| /** Wildcard element string. */ |
| private static final String NODETYPE_ANYELEMENT_STRING = "*"; |
| |
| /** current function string. */ |
| private static final String FUNC_CURRENT_STRING = "current"; |
| |
| /** last function string. */ |
| private static final String FUNC_LAST_STRING = "last"; |
| |
| /** position function string. */ |
| private static final String FUNC_POSITION_STRING = "position"; |
| |
| /** count function string. */ |
| private static final String FUNC_COUNT_STRING = "count"; |
| |
| /** id function string. */ |
| static final String FUNC_ID_STRING = "id"; |
| |
| /** key function string (XSLT). */ |
| public static final String FUNC_KEY_STRING = "key"; |
| |
| /** local-name function string. */ |
| private static final String FUNC_LOCAL_PART_STRING = "local-name"; |
| |
| /** namespace-uri function string. */ |
| private static final String FUNC_NAMESPACE_STRING = "namespace-uri"; |
| |
| /** name function string. */ |
| private static final String FUNC_NAME_STRING = "name"; |
| |
| /** generate-id function string (XSLT). */ |
| private static final String FUNC_GENERATE_ID_STRING = "generate-id"; |
| |
| /** not function string. */ |
| private static final String FUNC_NOT_STRING = "not"; |
| |
| /** true function string. */ |
| private static final String FUNC_TRUE_STRING = "true"; |
| |
| /** false function string. */ |
| private static final String FUNC_FALSE_STRING = "false"; |
| |
| /** boolean function string. */ |
| private static final String FUNC_BOOLEAN_STRING = "boolean"; |
| |
| /** lang function string. */ |
| private static final String FUNC_LANG_STRING = "lang"; |
| |
| /** number function string. */ |
| private static final String FUNC_NUMBER_STRING = "number"; |
| |
| /** floor function string. */ |
| private static final String FUNC_FLOOR_STRING = "floor"; |
| |
| /** ceiling function string. */ |
| private static final String FUNC_CEILING_STRING = "ceiling"; |
| |
| /** round function string. */ |
| private static final String FUNC_ROUND_STRING = "round"; |
| |
| /** sum function string. */ |
| private static final String FUNC_SUM_STRING = "sum"; |
| |
| /** string function string. */ |
| private static final String FUNC_STRING_STRING = "string"; |
| |
| /** starts-with function string. */ |
| private static final String FUNC_STARTS_WITH_STRING = "starts-with"; |
| |
| /** contains function string. */ |
| private static final String FUNC_CONTAINS_STRING = "contains"; |
| |
| /** substring-before function string. */ |
| private static final String FUNC_SUBSTRING_BEFORE_STRING = |
| "substring-before"; |
| |
| /** substring-after function string. */ |
| private static final String FUNC_SUBSTRING_AFTER_STRING = "substring-after"; |
| |
| /** normalize-space function string. */ |
| private static final String FUNC_NORMALIZE_SPACE_STRING = "normalize-space"; |
| |
| /** translate function string. */ |
| private static final String FUNC_TRANSLATE_STRING = "translate"; |
| |
| /** concat function string. */ |
| private static final String FUNC_CONCAT_STRING = "concat"; |
| |
| /** system-property function string. */ |
| private static final String FUNC_SYSTEM_PROPERTY_STRING = "system-property"; |
| |
| /** function-available function string (XSLT). */ |
| private static final String FUNC_EXT_FUNCTION_AVAILABLE_STRING = |
| "function-available"; |
| |
| /** element-available function string (XSLT). */ |
| private static final String FUNC_EXT_ELEM_AVAILABLE_STRING = |
| "element-available"; |
| |
| /** substring function string. */ |
| private static final String FUNC_SUBSTRING_STRING = "substring"; |
| |
| /** string-length function string. */ |
| private static final String FUNC_STRING_LENGTH_STRING = "string-length"; |
| |
| /** unparsed-entity-uri function string (XSLT). */ |
| private static final String FUNC_UNPARSED_ENTITY_URI_STRING = |
| "unparsed-entity-uri"; |
| |
| // Proprietary, built in functions |
| |
| /** current function string (Proprietary). */ |
| private static final String FUNC_DOCLOCATION_STRING = "document-location"; |
| |
| static |
| { |
| m_axisnames.put(FROM_ANCESTORS_STRING, |
| new Integer(OpCodes.FROM_ANCESTORS)); |
| m_axisnames.put(FROM_ANCESTORS_OR_SELF_STRING, |
| new Integer(OpCodes.FROM_ANCESTORS_OR_SELF)); |
| m_axisnames.put(FROM_ATTRIBUTES_STRING, |
| new Integer(OpCodes.FROM_ATTRIBUTES)); |
| m_axisnames.put(FROM_CHILDREN_STRING, |
| new Integer(OpCodes.FROM_CHILDREN)); |
| m_axisnames.put(FROM_DESCENDANTS_STRING, |
| new Integer(OpCodes.FROM_DESCENDANTS)); |
| m_axisnames.put(FROM_DESCENDANTS_OR_SELF_STRING, |
| new Integer(OpCodes.FROM_DESCENDANTS_OR_SELF)); |
| m_axisnames.put(FROM_FOLLOWING_STRING, |
| new Integer(OpCodes.FROM_FOLLOWING)); |
| m_axisnames.put(FROM_FOLLOWING_SIBLINGS_STRING, |
| new Integer(OpCodes.FROM_FOLLOWING_SIBLINGS)); |
| m_axisnames.put(FROM_PARENT_STRING, |
| new Integer(OpCodes.FROM_PARENT)); |
| m_axisnames.put(FROM_PRECEDING_STRING, |
| new Integer(OpCodes.FROM_PRECEDING)); |
| m_axisnames.put(FROM_PRECEDING_SIBLINGS_STRING, |
| new Integer(OpCodes.FROM_PRECEDING_SIBLINGS)); |
| m_axisnames.put(FROM_SELF_STRING, |
| new Integer(OpCodes.FROM_SELF)); |
| m_axisnames.put(FROM_NAMESPACE_STRING, |
| new Integer(OpCodes.FROM_NAMESPACE)); |
| m_nodetypes.put(NODETYPE_COMMENT_STRING, |
| new Integer(OpCodes.NODETYPE_COMMENT)); |
| m_nodetypes.put(NODETYPE_TEXT_STRING, |
| new Integer(OpCodes.NODETYPE_TEXT)); |
| m_nodetypes.put(NODETYPE_PI_STRING, |
| new Integer(OpCodes.NODETYPE_PI)); |
| m_nodetypes.put(NODETYPE_NODE_STRING, |
| new Integer(OpCodes.NODETYPE_NODE)); |
| m_nodetypes.put(NODETYPE_ANYELEMENT_STRING, |
| new Integer(OpCodes.NODETYPE_ANYELEMENT)); |
| m_keywords.put(FROM_SELF_ABBREVIATED_STRING, |
| new Integer(OpCodes.FROM_SELF)); |
| m_keywords.put(FUNC_ID_STRING, |
| new Integer(FunctionTable.FUNC_ID)); |
| m_keywords.put(FUNC_KEY_STRING, |
| new Integer(FunctionTable.FUNC_KEY)); |
| m_functions.put(FUNC_CURRENT_STRING, |
| new Integer(FunctionTable.FUNC_CURRENT)); |
| m_functions.put(FUNC_LAST_STRING, |
| new Integer(FunctionTable.FUNC_LAST)); |
| m_functions.put(FUNC_POSITION_STRING, |
| new Integer(FunctionTable.FUNC_POSITION)); |
| m_functions.put(FUNC_COUNT_STRING, |
| new Integer(FunctionTable.FUNC_COUNT)); |
| m_functions.put(FUNC_ID_STRING, |
| new Integer(FunctionTable.FUNC_ID)); |
| m_functions.put(FUNC_KEY_STRING, |
| new Integer(FunctionTable.FUNC_KEY)); |
| m_functions.put(FUNC_LOCAL_PART_STRING, |
| new Integer(FunctionTable.FUNC_LOCAL_PART)); |
| m_functions.put(FUNC_NAMESPACE_STRING, |
| new Integer(FunctionTable.FUNC_NAMESPACE)); |
| m_functions.put(FUNC_NAME_STRING, |
| new Integer(FunctionTable.FUNC_QNAME)); |
| m_functions.put(FUNC_GENERATE_ID_STRING, |
| new Integer(FunctionTable.FUNC_GENERATE_ID)); |
| m_functions.put(FUNC_NOT_STRING, |
| new Integer(FunctionTable.FUNC_NOT)); |
| m_functions.put(FUNC_TRUE_STRING, |
| new Integer(FunctionTable.FUNC_TRUE)); |
| m_functions.put(FUNC_FALSE_STRING, |
| new Integer(FunctionTable.FUNC_FALSE)); |
| m_functions.put(FUNC_BOOLEAN_STRING, |
| new Integer(FunctionTable.FUNC_BOOLEAN)); |
| m_functions.put(FUNC_LANG_STRING, |
| new Integer(FunctionTable.FUNC_LANG)); |
| m_functions.put(FUNC_NUMBER_STRING, |
| new Integer(FunctionTable.FUNC_NUMBER)); |
| m_functions.put(FUNC_FLOOR_STRING, |
| new Integer(FunctionTable.FUNC_FLOOR)); |
| m_functions.put(FUNC_CEILING_STRING, |
| new Integer(FunctionTable.FUNC_CEILING)); |
| m_functions.put(FUNC_ROUND_STRING, |
| new Integer(FunctionTable.FUNC_ROUND)); |
| m_functions.put(FUNC_SUM_STRING, |
| new Integer(FunctionTable.FUNC_SUM)); |
| m_functions.put(FUNC_STRING_STRING, |
| new Integer(FunctionTable.FUNC_STRING)); |
| m_functions.put(FUNC_STARTS_WITH_STRING, |
| new Integer(FunctionTable.FUNC_STARTS_WITH)); |
| m_functions.put(FUNC_CONTAINS_STRING, |
| new Integer(FunctionTable.FUNC_CONTAINS)); |
| m_functions.put(FUNC_SUBSTRING_BEFORE_STRING, |
| new Integer(FunctionTable.FUNC_SUBSTRING_BEFORE)); |
| m_functions.put(FUNC_SUBSTRING_AFTER_STRING, |
| new Integer(FunctionTable.FUNC_SUBSTRING_AFTER)); |
| m_functions.put(FUNC_NORMALIZE_SPACE_STRING, |
| new Integer(FunctionTable.FUNC_NORMALIZE_SPACE)); |
| m_functions.put(FUNC_TRANSLATE_STRING, |
| new Integer(FunctionTable.FUNC_TRANSLATE)); |
| m_functions.put(FUNC_CONCAT_STRING, |
| new Integer(FunctionTable.FUNC_CONCAT)); |
| |
| //m_functions.put(FUNC_FORMAT_NUMBER_STRING, new Integer(FunctionTable.FUNC_FORMAT_NUMBER)); |
| m_functions.put(FUNC_SYSTEM_PROPERTY_STRING, |
| new Integer(FunctionTable.FUNC_SYSTEM_PROPERTY)); |
| m_functions.put(FUNC_EXT_FUNCTION_AVAILABLE_STRING, |
| new Integer(FunctionTable.FUNC_EXT_FUNCTION_AVAILABLE)); |
| m_functions.put(FUNC_EXT_ELEM_AVAILABLE_STRING, |
| new Integer(FunctionTable.FUNC_EXT_ELEM_AVAILABLE)); |
| m_functions.put(FUNC_SUBSTRING_STRING, |
| new Integer(FunctionTable.FUNC_SUBSTRING)); |
| m_functions.put(FUNC_STRING_LENGTH_STRING, |
| new Integer(FunctionTable.FUNC_STRING_LENGTH)); |
| m_functions.put(FUNC_UNPARSED_ENTITY_URI_STRING, |
| new Integer(FunctionTable.FUNC_UNPARSED_ENTITY_URI)); |
| |
| // These aren't really functions. |
| m_functions.put(NODETYPE_COMMENT_STRING, |
| new Integer(OpCodes.NODETYPE_COMMENT)); |
| m_functions.put(NODETYPE_TEXT_STRING, |
| new Integer(OpCodes.NODETYPE_TEXT)); |
| m_functions.put(NODETYPE_PI_STRING, |
| new Integer(OpCodes.NODETYPE_PI)); |
| m_functions.put(NODETYPE_NODE_STRING, |
| new Integer(OpCodes.NODETYPE_NODE)); |
| m_functions.put(FUNC_DOCLOCATION_STRING, |
| new Integer(FunctionTable.FUNC_DOCLOCATION)); |
| } |
| |
| /** |
| * Tell if a built-in, non-namespaced function is available. |
| * |
| * @param methName The local name of the function. |
| * |
| * @return True if the function can be executed. |
| */ |
| public static boolean functionAvailable(String methName) |
| { |
| |
| try |
| { |
| Object tblEntry = m_functions.get(methName); |
| |
| if (null == tblEntry) |
| return false; |
| |
| int funcType = ((Integer) tblEntry).intValue(); |
| |
| switch (funcType) |
| { |
| case OpCodes.NODETYPE_COMMENT : |
| case OpCodes.NODETYPE_TEXT : |
| case OpCodes.NODETYPE_PI : |
| case OpCodes.NODETYPE_NODE : |
| return false; // These look like functions but they're NodeTests. |
| default : |
| return true; |
| } |
| } |
| catch (Exception e) |
| { |
| return false; |
| } |
| } |
| } |