/* * Copyright 1999-2004 The Apache Software Foundation. * * Licensed 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. */ /* * $Id: Keywords.java,v 1.10 2004/02/17 04:32:48 minchau Exp $ */ package com.sun.org.apache.xpath.internal.compiler; import java.util.Hashtable; /** * Table of strings to operation code lookups. * @xsl.usage internal */ 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; } } }