Source Code Cross Referenced for ASTWithPositionInfo.java in  » Database-ORM » db-ojb » org » apache » ojb » jdo » jdoql » Java Source Code / Java DocumentationJava Source Code and Java Documentation

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Java Source Code / Java Documentation » Database ORM » db ojb » org.apache.ojb.jdo.jdoql 
Source Cross Referenced  Class Diagram Java Document (Java Doc) 


001:        package org.apache.ojb.jdo.jdoql;
002:
003:        /* Copyright 2003-2005 The Apache Software Foundation
004:         *
005:         * Licensed under the Apache License, Version 2.0 (the "License");
006:         * you may not use this file except in compliance with the License.
007:         * You may obtain a copy of the License at
008:         *
009:         *     http://www.apache.org/licenses/LICENSE-2.0
010:         *
011:         * Unless required by applicable law or agreed to in writing, software
012:         * distributed under the License is distributed on an "AS IS" BASIS,
013:         * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
014:         * See the License for the specific language governing permissions and
015:         * limitations under the License.
016:         */
017:
018:        import antlr.CommonAST;
019:        import antlr.Token;
020:        import antlr.collections.AST;
021:
022:        /**
023:         * An AST node that also contains position info (for error handling).
024:         * 
025:         * @author <a href="mailto:tomdz@apache.org">Thomas Dudziak</a>
026:         */
027:        public class ASTWithPositionInfo extends CommonAST {
028:            /** The line where the source of this node started. */
029:            private int _line = 0;
030:            /** The column where the source of this node started. */
031:            private int _column = 0;
032:
033:            /**
034:             * Creates a new node.
035:             */
036:            public ASTWithPositionInfo() {
037:                super ();
038:            }
039:
040:            /**
041:             * Creates a new node for the given token.
042:             * 
043:             * @param tok The token
044:             */
045:            public ASTWithPositionInfo(Token tok) {
046:                super (tok);
047:            }
048:
049:            /**
050:             * Returns the column where the source of this node started.
051:             * 
052:             * @return The column
053:             * @see antlr.collections.AST#getColumn()
054:             */
055:            public int getColumn() {
056:                return _column;
057:            }
058:
059:            /**
060:             * Returns the line where the source of this node started.
061:             * 
062:             * @return The line
063:             * @see antlr.collections.AST#getLine()
064:             */
065:            public int getLine() {
066:                return _line;
067:            }
068:
069:            /* (non-Javadoc)
070:             * @see antlr.collections.AST#initialize(antlr.collections.AST)
071:             */
072:            public void initialize(AST ast) {
073:                super .initialize(ast);
074:                _line = ast.getLine();
075:                _column = ast.getColumn();
076:            }
077:
078:            /* (non-Javadoc)
079:             * @see antlr.collections.AST#initialize(antlr.Token)
080:             */
081:            public void initialize(Token tok) {
082:                super .initialize(tok);
083:                _line = tok.getLine();
084:                _column = tok.getColumn();
085:            }
086:
087:            /* (non-Javadoc)
088:             * @see antlr.collections.AST#addChild(antlr.collections.AST)
089:             */
090:            public void addChild(AST ast) {
091:                if ((ast != null) && (down == null) && (_line == 0)
092:                        && (_column == 0)) {
093:                    _line = ast.getLine();
094:                    _column = ast.getColumn();
095:                }
096:                super .addChild(ast);
097:            }
098:
099:            /* (non-Javadoc)
100:             * @see antlr.collections.AST#setFirstChild(antlr.collections.AST)
101:             */
102:            public void setFirstChild(AST ast) {
103:                if ((ast != null) && (_line == 0) && (_column == 0)) {
104:                    _line = ast.getLine();
105:                    _column = ast.getColumn();
106:                }
107:                super.setFirstChild(ast);
108:            }
109:        }
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