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Diffstat (limited to 'src/syntaxParser/java_cup/SAVE/terminal.java')
| -rw-r--r-- | src/syntaxParser/java_cup/SAVE/terminal.java | 188 |
1 files changed, 0 insertions, 188 deletions
diff --git a/src/syntaxParser/java_cup/SAVE/terminal.java b/src/syntaxParser/java_cup/SAVE/terminal.java deleted file mode 100644 index 5a32ae8..0000000 --- a/src/syntaxParser/java_cup/SAVE/terminal.java +++ /dev/null @@ -1,188 +0,0 @@ -/* - * This file is part of Petascope. - * - * Petascope is free software: you can redistribute it and/or modify - * it under the terms of the GNU Lesser General Public License as - * published by the Free Software Foundation, either version 3 of - * the License, or (at your option) any later version. - * - * Petascope is distributed in the hope that it will be useful, - * but WITHOUT ANY WARRANTY; without even the implied warranty of - * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the - * GNU Lesser General Public License for more details. - * - * You should have received a copy of the GNU Lesser General Public - * License along with Petascope. If not, see <http://www.gnu.org/licenses/>. - * - * For more information please see <http://www.Petascope.org> - * or contact Peter Baumann via <baumann@rasdaman.com>. - * - * Copyright 2009 Jacobs University Bremen, Peter Baumann. - */ - -package java_cup; - -import java_cup.assoc; -import java.util.Hashtable; -import java.util.Enumeration; - -/** This class represents a terminal symbol in the grammar. Each terminal - * has a textual name, an index, and a string which indicates the type of - * object it will be implemented with at runtime (i.e. the class of object - * that will be returned by the scanner and pushed on the parse stack to - * represent it). - */ -public class terminal extends symbol { - - /*-----------------------------------------------------------*/ - /*--- Constructor(s) ----------------------------------------*/ - /*-----------------------------------------------------------*/ - - /** Full constructor. - * @param nm the name of the terminal. - * @param tp the type of the terminal. - */ - public terminal(String nm, String tp, int precedence_side, int precedence_num) - { - /* superclass does most of the work */ - super(nm, tp); - - /* add to set of all terminals and check for duplicates */ - Object conflict = _all.put(nm,this); - if (conflict != null) - // can't throw an execption here because this is used in static - // initializers, so we do a crash instead - // was: - // throw new internal_error("Duplicate terminal (" + nm + ") created"); - (new internal_error("Duplicate terminal (" + nm + ") created")).crash(); - - /* assign a unique index */ - _index = next_index++; - - /* set the precedence */ - _precedence_num = precedence_num; - _precedence_side = precedence_side; - - /* add to by_index set */ - _all_by_index.put(new Integer(_index), this); - } - - /*. . . . . . . . . . . . . . . . . . . . . . . . . . . . . .*/ - - /** Constructor for non-precedented terminal - */ - - public terminal(String nm, String tp) - { - this(nm, tp, assoc.no_prec, -1); - } - - /*. . . . . . . . . . . . . . . . . . . . . . . . . . . . . .*/ - - /** Constructor with default type. - * @param nm the name of the terminal. - */ - public terminal(String nm) - { - this(nm, null); - } - - /*-----------------------------------------------------------*/ - /*------------------- Class Variables ---------------------*/ - /*-----------------------------------------------------------*/ - - private int _precedence_num; - private int _precedence_side; - - /*-----------------------------------------------------------*/ - /*--- (Access to) Static (Class) Variables ------------------*/ - /*-----------------------------------------------------------*/ - - /** Table of all terminals. Elements are stored using name strings as - * the key - */ - protected static Hashtable _all = new Hashtable(); - - /** Access to all terminals. */ - public static Enumeration all() {return _all.elements();} - - /** Lookup a terminal by name string. */ - public static terminal find(String with_name) - { - if (with_name == null) - return null; - else - return (terminal)_all.get(with_name); - } - - - /*. . . . . . . . . . . . . . . . . . . . . . . . . . . . . .*/ - - /** Table of all terminals indexed by their index number. */ - protected static Hashtable _all_by_index = new Hashtable(); - - /** Lookup a terminal by index. */ - public static terminal find(int indx) - { - Integer the_indx = new Integer(indx); - - return (terminal)_all_by_index.get(the_indx); - } - - /*. . . . . . . . . . . . . . . . . . . . . . . . . . . . . .*/ - - /** Total number of terminals. */ - public static int number() {return _all.size();} - - /*. . . . . . . . . . . . . . . . . . . . . . . . . . . . . .*/ - - /** Static counter to assign unique index. */ - protected static int next_index = 0; - - /*. . . . . . . . . . . . . . . . . . . . . . . . . . . . . .*/ - - /** Special terminal for end of input. */ - public static final terminal EOF = new terminal("EOF"); - - /*. . . . . . . . . . . . . . . . . . . . . . . . . . . . . .*/ - - /** special terminal used for error recovery */ - public static final terminal error = new terminal("error"); - - /*-----------------------------------------------------------*/ - /*--- General Methods ---------------------------------------*/ - /*-----------------------------------------------------------*/ - - /** Report this symbol as not being a non-terminal. */ - public boolean is_non_term() - { - return false; - } - - /*. . . . . . . . . . . . . . . . . . . . . . . . . . . . . .*/ - - /** Convert to a string. */ - public String toString() - { - return super.toString() + "[" + index() + "]"; - } - - /*. . . . . . . . . . . . . . . . . . . . . . . . . . . . . .*/ - - /** get the precedence of a terminal */ - public int precedence_num() { - return _precedence_num; - } - public int precedence_side() { - return _precedence_side; - } - - /** set the precedence of a terminal */ - public void set_precedence(int p, int new_prec) { - _precedence_side = p; - _precedence_num = new_prec; - } - - /*-----------------------------------------------------------*/ - -} |
