/*
* 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;
}
}
}
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