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/*
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* reserved comment block
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* DO NOT REMOVE OR ALTER!
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*/
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/*
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* Copyright 1999-2004 The Apache Software Foundation.
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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/*
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* $Id: OpCodes.java,v 1.1.2.1 2005/08/01 01:30:33 jeffsuttor Exp $
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*/
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package com.sun.org.apache.xpath.internal.compiler;
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/**
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* Operations codes for XPath.
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*
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* Code for the descriptions of the operations codes:
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* [UPPER CASE] indicates a literal value,
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* [lower case] is a description of a value,
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* ([length] always indicates the length of the operation,
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* including the operations code and the length integer.)
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* {UPPER CASE} indicates the given production,
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* {description} is the description of a new production,
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* (For instance, {boolean expression} means some expression
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* that should be resolved to a boolean.)
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* * means that it occurs zero or more times,
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* + means that it occurs one or more times,
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* ? means that it is optional.
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*
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* returns: indicates what the production should return.
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*/
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public class OpCodes
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{
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/**
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* [ENDOP]
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* Some operators may like to have a terminator.
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* @xsl.usage advanced
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*/
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public static final int ENDOP = -1;
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/**
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* [EMPTY]
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* Empty slot to indicate NULL.
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*/
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public static final int EMPTY = -2;
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/**
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* [ELEMWILDCARD]
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* Means ELEMWILDCARD ("*"), used instead
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* of string index in some places.
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* @xsl.usage advanced
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*/
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public static final int ELEMWILDCARD = -3;
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/**
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* [OP_XPATH]
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* [length]
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* {expression}
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*
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* returns:
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* XNodeSet
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* XNumber
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* XString
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* XBoolean
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* XRTree
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* XObject
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* @xsl.usage advanced
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*/
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public static final int OP_XPATH = 1;
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/**
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* [OP_OR]
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* [length]
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* {boolean expression}
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* {boolean expression}
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*
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* returns:
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* XBoolean
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* @xsl.usage advanced
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*/
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public static final int OP_OR = 2;
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/**
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* [OP_AND]
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* [length]
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* {boolean expression}
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* {boolean expression}
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*
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* returns:
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* XBoolean
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* @xsl.usage advanced
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*/
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public static final int OP_AND = 3;
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/**
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* [OP_NOTEQUALS]
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* [length]
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* {expression}
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* {expression}
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*
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* returns:
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* XBoolean
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* @xsl.usage advanced
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*/
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public static final int OP_NOTEQUALS = 4;
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/**
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* [OP_EQUALS]
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* [length]
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* {expression}
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* {expression}
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*
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* returns:
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* XBoolean
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* @xsl.usage advanced
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*/
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public static final int OP_EQUALS = 5;
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/**
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* [OP_LTE] (less-than-or-equals)
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* [length]
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* {number expression}
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* {number expression}
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*
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* returns:
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* XBoolean
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* @xsl.usage advanced
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*/
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public static final int OP_LTE = 6;
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/**
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* [OP_LT] (less-than)
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* [length]
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* {number expression}
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* {number expression}
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*
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* returns:
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* XBoolean
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* @xsl.usage advanced
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*/
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public static final int OP_LT = 7;
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/**
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* [OP_GTE] (greater-than-or-equals)
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* [length]
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* {number expression}
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* {number expression}
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*
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* returns:
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* XBoolean
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* @xsl.usage advanced
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*/
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public static final int OP_GTE = 8;
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/**
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* [OP_GT] (greater-than)
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* [length]
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* {number expression}
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* {number expression}
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*
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* returns:
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* XBoolean
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* @xsl.usage advanced
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*/
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public static final int OP_GT = 9;
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/**
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* [OP_PLUS]
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* [length]
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* {number expression}
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* {number expression}
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*
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* returns:
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* XNumber
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* @xsl.usage advanced
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*/
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public static final int OP_PLUS = 10;
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/**
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* [OP_MINUS]
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* [length]
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* {number expression}
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* {number expression}
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*
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* returns:
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* XNumber
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* @xsl.usage advanced
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*/
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public static final int OP_MINUS = 11;
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/**
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* [OP_MULT]
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* [length]
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* {number expression}
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* {number expression}
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*
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* returns:
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* XNumber
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* @xsl.usage advanced
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*/
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public static final int OP_MULT = 12;
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/**
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* [OP_DIV]
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* [length]
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* {number expression}
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* {number expression}
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*
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* returns:
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* XNumber
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* @xsl.usage advanced
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*/
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public static final int OP_DIV = 13;
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/**
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* [OP_MOD]
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* [length]
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* {number expression}
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* {number expression}
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*
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* returns:
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* XNumber
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* @xsl.usage advanced
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*/
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public static final int OP_MOD = 14;
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/**
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* [OP_QUO]
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* [length]
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* {number expression}
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* {number expression}
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*
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* returns:
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* XNumber
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* @xsl.usage advanced
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*/
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public static final int OP_QUO = 15;
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/**
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* [OP_NEG]
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* [length]
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* {number expression}
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*
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* returns:
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* XNumber
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* @xsl.usage advanced
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*/
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public static final int OP_NEG = 16;
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/**
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* [OP_STRING] (cast operation)
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* [length]
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* {expression}
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*
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* returns:
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* XString
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* @xsl.usage advanced
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*/
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public static final int OP_STRING = 17;
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/**
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* [OP_BOOL] (cast operation)
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* [length]
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* {expression}
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*
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* returns:
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* XBoolean
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* @xsl.usage advanced
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*/
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public static final int OP_BOOL = 18;
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/**
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* [OP_NUMBER] (cast operation)
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* [length]
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* {expression}
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*
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* returns:
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* XBoolean
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* @xsl.usage advanced
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*/
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public static final int OP_NUMBER = 19;
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/**
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* [OP_UNION]
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* [length]
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* {PathExpr}+
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*
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* returns:
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* XNodeSet
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* @xsl.usage advanced
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*/
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public static final int OP_UNION = 20;
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/**
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* [OP_LITERAL]
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* [3]
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* [index to token]
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*
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* returns:
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* XString
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* @xsl.usage advanced
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*/
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public static final int OP_LITERAL = 21;
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/** The low opcode for nodesets, needed by getFirstPredicateOpPos and
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* getNextStepPos. */
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static final int FIRST_NODESET_OP = 22;
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/**
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* [OP_VARIABLE]
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* [4]
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* [index to namespace token, or EMPTY]
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* [index to function name token]
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*
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* returns:
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* XString
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* @xsl.usage advanced
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*/
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public static final int OP_VARIABLE = 22;
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/**
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* [OP_GROUP]
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* [length]
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* {expression}
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*
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* returns:
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* XNodeSet
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* XNumber
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* XString
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* XBoolean
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* XRTree
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* XObject
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* @xsl.usage advanced
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*/
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public static final int OP_GROUP = 23;
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/**
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* [OP_EXTFUNCTION] (Extension function.)
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* [length]
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* [index to namespace token]
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* [index to function name token]
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* {OP_ARGUMENT}
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*
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* returns:
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* XNodeSet
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* XNumber
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* XString
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* XBoolean
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* XRTree
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* XObject
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* @xsl.usage advanced
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*/
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public static final int OP_EXTFUNCTION = 24;
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/**
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* [OP_FUNCTION]
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* [length]
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* [FUNC_name]
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* {OP_ARGUMENT}
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* [ENDOP]
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*
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* returns:
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* XNodeSet
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* XNumber
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* XString
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* XBoolean
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* XRTree
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* XObject
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* @xsl.usage advanced
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*/
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public static final int OP_FUNCTION = 25;
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/** The last opcode for stuff that can be a nodeset. */
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static final int LAST_NODESET_OP = 25;
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/**
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* [OP_ARGUMENT] (Function argument.)
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* [length]
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* {expression}
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*
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* returns:
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* XNodeSet
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* XNumber
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* XString
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* XBoolean
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* XRTree
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* XObject
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* @xsl.usage advanced
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*/
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402 |
public static final int OP_ARGUMENT = 26;
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403 |
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/**
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* [OP_NUMBERLIT] (Number literal.)
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* [3]
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* [index to token]
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*
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* returns:
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* XString
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* @xsl.usage advanced
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*/
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413 |
public static final int OP_NUMBERLIT = 27;
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414 |
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/**
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416 |
* [OP_LOCATIONPATH]
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417 |
* [length]
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418 |
* {FROM_stepType}
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419 |
* | {function}
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420 |
* {predicate}
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421 |
* [ENDOP]
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|
422 |
*
|
|
|
423 |
* (Note that element and attribute namespaces and
|
|
|
424 |
* names can be wildcarded '*'.)
|
|
|
425 |
*
|
|
|
426 |
* returns:
|
|
|
427 |
* XNodeSet
|
|
|
428 |
* @xsl.usage advanced
|
|
|
429 |
*/
|
|
|
430 |
public static final int OP_LOCATIONPATH = 28;
|
|
|
431 |
|
|
|
432 |
// public static final int LOCATIONPATHEX_MASK = 0x0000FFFF;
|
|
|
433 |
// public static final int LOCATIONPATHEX_ISSIMPLE = 0x00010000;
|
|
|
434 |
// public static final int OP_LOCATIONPATH_EX = (28 | 0x00010000);
|
|
|
435 |
|
|
|
436 |
/**
|
|
|
437 |
* [OP_PREDICATE]
|
|
|
438 |
* [length]
|
|
|
439 |
* {expression}
|
|
|
440 |
* [ENDOP] (For safety)
|
|
|
441 |
*
|
|
|
442 |
* returns:
|
|
|
443 |
* XBoolean or XNumber
|
|
|
444 |
* @xsl.usage advanced
|
|
|
445 |
*/
|
|
|
446 |
public static final int OP_PREDICATE = 29;
|
|
|
447 |
|
|
|
448 |
/**
|
|
|
449 |
* [OP_MATCHPATTERN]
|
|
|
450 |
* [length]
|
|
|
451 |
* {PathExpr}+
|
|
|
452 |
*
|
|
|
453 |
* returns:
|
|
|
454 |
* XNodeSet
|
|
|
455 |
* @xsl.usage advanced
|
|
|
456 |
*/
|
|
|
457 |
public static final int OP_MATCHPATTERN = 30;
|
|
|
458 |
|
|
|
459 |
/**
|
|
|
460 |
* [OP_LOCATIONPATHPATTERN]
|
|
|
461 |
* [length]
|
|
|
462 |
* {FROM_stepType}
|
|
|
463 |
* | {function}{predicate}
|
|
|
464 |
* [ENDOP]
|
|
|
465 |
* returns:
|
|
|
466 |
* XNodeSet
|
|
|
467 |
* @xsl.usage advanced
|
|
|
468 |
*/
|
|
|
469 |
public static final int OP_LOCATIONPATHPATTERN = 31;
|
|
|
470 |
|
|
|
471 |
/**
|
|
|
472 |
* [NODETYPE_COMMENT]
|
|
|
473 |
* No size or arguments.
|
|
|
474 |
* Note: must not overlap function OP number!
|
|
|
475 |
*
|
|
|
476 |
* returns:
|
|
|
477 |
* XBoolean
|
|
|
478 |
* @xsl.usage advanced
|
|
|
479 |
*/
|
|
|
480 |
public static final int NODETYPE_COMMENT = 1030;
|
|
|
481 |
|
|
|
482 |
/**
|
|
|
483 |
* [NODETYPE_TEXT]
|
|
|
484 |
* No size or arguments.
|
|
|
485 |
* Note: must not overlap function OP number!
|
|
|
486 |
*
|
|
|
487 |
* returns:
|
|
|
488 |
* XBoolean
|
|
|
489 |
* @xsl.usage advanced
|
|
|
490 |
*/
|
|
|
491 |
public static final int NODETYPE_TEXT = 1031;
|
|
|
492 |
|
|
|
493 |
/**
|
|
|
494 |
* [NODETYPE_PI]
|
|
|
495 |
* [index to token]
|
|
|
496 |
* Note: must not overlap function OP number!
|
|
|
497 |
*
|
|
|
498 |
* returns:
|
|
|
499 |
* XBoolean
|
|
|
500 |
* @xsl.usage advanced
|
|
|
501 |
*/
|
|
|
502 |
public static final int NODETYPE_PI = 1032;
|
|
|
503 |
|
|
|
504 |
/**
|
|
|
505 |
* [NODETYPE_NODE]
|
|
|
506 |
* No size or arguments.
|
|
|
507 |
* Note: must not overlap function OP number!
|
|
|
508 |
*
|
|
|
509 |
* returns:
|
|
|
510 |
* XBoolean
|
|
|
511 |
* @xsl.usage advanced
|
|
|
512 |
*/
|
|
|
513 |
public static final int NODETYPE_NODE = 1033;
|
|
|
514 |
|
|
|
515 |
/**
|
|
|
516 |
* [NODENAME]
|
|
|
517 |
* [index to ns token or EMPTY]
|
|
|
518 |
* [index to name token]
|
|
|
519 |
*
|
|
|
520 |
* returns:
|
|
|
521 |
* XBoolean
|
|
|
522 |
* @xsl.usage advanced
|
|
|
523 |
*/
|
|
|
524 |
public static final int NODENAME = 34;
|
|
|
525 |
|
|
|
526 |
/**
|
|
|
527 |
* [NODETYPE_ROOT]
|
|
|
528 |
* No size or arguments.
|
|
|
529 |
*
|
|
|
530 |
* returns:
|
|
|
531 |
* XBoolean
|
|
|
532 |
* @xsl.usage advanced
|
|
|
533 |
*/
|
|
|
534 |
public static final int NODETYPE_ROOT = 35;
|
|
|
535 |
|
|
|
536 |
/**
|
|
|
537 |
* [NODETYPE_ANY]
|
|
|
538 |
* No size or arguments.
|
|
|
539 |
*
|
|
|
540 |
* returns:
|
|
|
541 |
* XBoolean
|
|
|
542 |
* @xsl.usage advanced
|
|
|
543 |
*/
|
|
|
544 |
public static final int NODETYPE_ANYELEMENT = 36;
|
|
|
545 |
|
|
|
546 |
/**
|
|
|
547 |
* [NODETYPE_ANY]
|
|
|
548 |
* No size or arguments.
|
|
|
549 |
*
|
|
|
550 |
* returns:
|
|
|
551 |
* XBoolean
|
|
|
552 |
* @xsl.usage advanced
|
|
|
553 |
*/
|
|
|
554 |
public static final int NODETYPE_FUNCTEST = 1034;
|
|
|
555 |
|
|
|
556 |
/**
|
|
|
557 |
* [FROM_stepType]
|
|
|
558 |
* [length, including predicates]
|
|
|
559 |
* [length of just the step, without the predicates]
|
|
|
560 |
* {node test}
|
|
|
561 |
* {predicates}?
|
|
|
562 |
*
|
|
|
563 |
* returns:
|
|
|
564 |
* XBoolean
|
|
|
565 |
* @xsl.usage advanced
|
|
|
566 |
*/
|
|
|
567 |
public static final int AXES_START_TYPES = 37;
|
|
|
568 |
|
|
|
569 |
/** ancestor axes opcode. */
|
|
|
570 |
public static final int FROM_ANCESTORS = 37;
|
|
|
571 |
|
|
|
572 |
/** ancestor-or-self axes opcode. */
|
|
|
573 |
public static final int FROM_ANCESTORS_OR_SELF = 38;
|
|
|
574 |
|
|
|
575 |
/** attribute axes opcode. */
|
|
|
576 |
public static final int FROM_ATTRIBUTES = 39;
|
|
|
577 |
|
|
|
578 |
/** children axes opcode. */
|
|
|
579 |
public static final int FROM_CHILDREN = 40;
|
|
|
580 |
|
|
|
581 |
/** descendants axes opcode. */
|
|
|
582 |
public static final int FROM_DESCENDANTS = 41;
|
|
|
583 |
|
|
|
584 |
/** descendants-of-self axes opcode. */
|
|
|
585 |
public static final int FROM_DESCENDANTS_OR_SELF = 42;
|
|
|
586 |
|
|
|
587 |
/** following axes opcode. */
|
|
|
588 |
public static final int FROM_FOLLOWING = 43;
|
|
|
589 |
|
|
|
590 |
/** following-siblings axes opcode. */
|
|
|
591 |
public static final int FROM_FOLLOWING_SIBLINGS = 44;
|
|
|
592 |
|
|
|
593 |
/** parent axes opcode. */
|
|
|
594 |
public static final int FROM_PARENT = 45;
|
|
|
595 |
|
|
|
596 |
/** preceding axes opcode. */
|
|
|
597 |
public static final int FROM_PRECEDING = 46;
|
|
|
598 |
|
|
|
599 |
/** preceding-sibling axes opcode. */
|
|
|
600 |
public static final int FROM_PRECEDING_SIBLINGS = 47;
|
|
|
601 |
|
|
|
602 |
/** self axes opcode. */
|
|
|
603 |
public static final int FROM_SELF = 48;
|
|
|
604 |
|
|
|
605 |
/** namespace axes opcode. */
|
|
|
606 |
public static final int FROM_NAMESPACE = 49;
|
|
|
607 |
|
|
|
608 |
/** '/' axes opcode. */
|
|
|
609 |
public static final int FROM_ROOT = 50;
|
|
|
610 |
|
|
|
611 |
/**
|
|
|
612 |
* For match patterns.
|
|
|
613 |
* @xsl.usage advanced
|
|
|
614 |
*/
|
|
|
615 |
public static final int MATCH_ATTRIBUTE = 51;
|
|
|
616 |
|
|
|
617 |
/**
|
|
|
618 |
* For match patterns.
|
|
|
619 |
* @xsl.usage advanced
|
|
|
620 |
*/
|
|
|
621 |
public static final int MATCH_ANY_ANCESTOR = 52;
|
|
|
622 |
|
|
|
623 |
/**
|
|
|
624 |
* For match patterns.
|
|
|
625 |
* @xsl.usage advanced
|
|
|
626 |
*/
|
|
|
627 |
public static final int MATCH_IMMEDIATE_ANCESTOR = 53;
|
|
|
628 |
|
|
|
629 |
/** The end of the axes types. */
|
|
|
630 |
public static final int AXES_END_TYPES = 53;
|
|
|
631 |
|
|
|
632 |
/** The next free ID. Please keep this up to date. */
|
|
|
633 |
private static final int NEXT_FREE_ID = 99;
|
|
|
634 |
}
|