fr.inria.oak.paxquery.xparser.XQueryMain.java Source code

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Here is the source code for fr.inria.oak.paxquery.xparser.XQueryMain.java

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/*******************************************************************************
 * Copyright (C) 2013, 2014, 2015 by Inria and Paris-Sud University
 * 
 * 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.
 ******************************************************************************/
package fr.inria.oak.paxquery.xparser;

import org.antlr.v4.runtime.*;
import org.antlr.v4.runtime.tree.*;

import fr.inria.oak.paxquery.common.xml.navigation.PrintingLevel;

public class XQueryMain {
    public static void main(String args[]) {
        try {
            System.out.println("Enter a valid XQuery expression followed by Enter and Ctrl+D: ");

            //VISITOR VERSION
            //create a CharStream that reads from standard input
            ANTLRInputStream input = new ANTLRInputStream(System.in);
            //create a lexer that feeds off of input CharStream
            XQueryLexer lexer = new XQueryLexer(input);

            //create a buffer of tokens pulled from the lexer
            CommonTokenStream tokens = new CommonTokenStream(lexer);
            //create a parser that feeds off the tokens buffer
            XQueryParser parser = new XQueryParser(tokens);

            ParseTree tree = parser.xquery();
            XQueryVisitorImplementation loader = new XQueryVisitorImplementation("");
            loader.visit(tree);

            System.out.println(tree.toStringTree(parser));
            for (int i = 0; i < loader.navigationTreePatterns.size(); i++) {
                System.out.println("PatternTree (" + i + "): ");
                System.out.println(loader.navigationTreePatterns.get(i).toString(PrintingLevel.SIMPLIFY));
            }
            System.out.println("HashMap:");
            System.out.println(loader.patternNodeMap.toString());
            //System.out.println("each:");
            //System.out.println(loader.applyEach.toString());
            //System.out.println("fields:");
            //System.out.println(loader.applyFields.toString());
            //System.out.println("Algebraic tree:");
            //System.out.println(XQueryUtils.algebraicTreeToString(loader.construct));
        } catch (Exception e) {
            System.out.println("Query malformed or not supported yet.");
        }

    }

    public static boolean test_main(String test_query) {
        try {
            System.out.println("XQuery: " + test_query);
            //create a CharStream that reads from standard input
            ANTLRInputStream input = new ANTLRInputStream(new java.io.ByteArrayInputStream(test_query.getBytes()));
            //create a lexer that feeds off of input CharStream
            XQueryLexer lexer = new XQueryLexer(input);
            //create a buffer of tokens pulled from the lexer
            CommonTokenStream tokens = new CommonTokenStream(lexer);
            //create a parser that feeds off the tokens buffer
            XQueryParser parser = new XQueryParser(tokens);

            ParseTree tree = parser.xquery(); //begin parsing at start rule
            System.out.println(tree.toStringTree(parser));

            return true;
        } catch (Exception e) {
            System.out.println("Error in input " + test_query);
            System.out.println(e.getMessage());
            return false;
        }
    }

    public static String test_processor(String test_query) {
        try {
            //System.out.println("XQuery: "+test_query);

            //VISITOR VERSION
            //create a CharStream that reads from standard input
            ANTLRInputStream input = new ANTLRInputStream(new java.io.ByteArrayInputStream(test_query.getBytes()));
            //create a lexer that feeds off of input CharStream
            XQueryLexer lexer = new XQueryLexer(input);

            //create a buffer of tokens pulled from the lexer
            CommonTokenStream tokens = new CommonTokenStream(lexer);
            //create a parser that feeds off the tokens buffer
            XQueryParser parser = new XQueryParser(tokens);

            ParseTree tree = parser.xquery();
            XQueryVisitorImplementation loader = new XQueryVisitorImplementation("");
            loader.visit(tree);

            //System.out.println("applyEach: "+loader.applyEach);
            //System.out.println("applyFields: "+loader.applyFields);

            //Print out normalized results
            StringBuilder sb = new StringBuilder();
            for (int i = 0; i < loader.navigationTreePatterns.size(); i++) {
                sb.append("PT" + i + ":"); //Pattern Tree
                sb.append(loader.navigationTreePatterns.get(i).toString(PrintingLevel.SIMPLIFY));
                if (i < loader.navigationTreePatterns.size() - 1)
                    sb.append(",");
            }
            sb.append("---");
            sb.append("HM:"); //Hash Map
            sb.append(loader.patternNodeMap.toString());
            sb.append("---");
            //sb.append("AT:");   //Algebraic Tree
            //sb.append(XQueryUtils.algebraicTreeToString(loader.construct));

            System.out.println(sb.toString());
            return sb.toString();

        } catch (Exception e) {
            System.out.println("Error in input " + test_query);
            System.out.println(e.getMessage());
            return "";
        }
    }
}