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CompilerGeneration.jrag

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    • CompilerGeneration.jrag 21.67 KiB 
    /* -*-Java-*- */

/* 
 * Copyright (C) 2006,2010  Anders Nilsson <anders.nilsson@control.lth.se>
 *
 * This file is part of OntologyCompiler.
 *
 * OntologyCompiler is free software: you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published by
 * the Free Software Foundation, either version 3 of the License, or
 * (at your option) any later version.

 * OntologyCompiler 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 General Public License for more details.
 
 * You should have received a copy of the GNU General Public License
 * along with OntologyCompiler.  If not, see <http://www.gnu.org/licenses/>.
 */

import java.io.*;
import java.util.*;

aspect AbsGrammarGeneration {
    void ASTNode.genAbsGrammar(PrintStream pStream) {
		for (int i=0; i<getNumChild(); i++) {
			getChild(i).genAbsGrammar(pStream);
		}
    }

    public void Start.genAbsGrammar(PrintStream pStream) {
        pStream.println("// -*-Java-*- ");
        pStream.println();
        pStream.println("// Automatically generated JastAdd abstract grammar file ");
		pStream.println("// Predefined types");
		pStream.println("Start ::= Element*;");
		pStream.println("abstract Thing : ComplexElement ::=;");
		pStream.println("abstract Element;");
 		pStream.println("ComplexElement : Element ::=  OwlIdentifier Attribute* Element*;");
		pStream.println("ValueElement : ComplexElement;");
		pStream.println("RdfDeclaration : ComplexElement;");
		pStream.println("abstract SimpleElement : Element ::= <LITERAL>;");
		pStream.println("StringElement : SimpleElement ::=;");
		pStream.println("IntElement : SimpleElement ::=;");
		pStream.println("FloatElement : SimpleElement ::=;");
		pStream.println("ClassUse : Thing  ::= /decl:Thing/;");
		pStream.println("Attribute ::= Value;");
		pStream.println("AbbreviatedIRI : Attribute ::= ;");
		pStream.println("Cardinality : Attribute ::= ;");
		pStream.println("DatatypeIRI : Attribute ::= ;");
		pStream.println("IRI : Attribute ::= ;");
		pStream.println("Name : Attribute ::= ;");
		pStream.println("OntologyIRI : Attribute ::= ;");
		pStream.println("RdfDatatype : Attribute ::= ;");
		pStream.println("RdfId : Attribute ::= ;");
		pStream.println("Xmlns : Attribute ::= ;");
		pStream.println("XmlnsProtege : Attribute ::= ;");
		pStream.println("XmlnsRdf : Attribute ::= ;");
		pStream.println("XmlnsXsd : Attribute ::= ;");
		pStream.println("XmlnsXsp : Attribute ::= ;");
		pStream.println("XmlnsRdfs : Attribute ::= ;");
		pStream.println("XmlnsOwl : Attribute ::= ;");
		pStream.println("XmlnsSwrl : Attribute ::= ;");
		pStream.println("XmlnsSwrlb : Attribute ::= ;");
		pStream.println("XmlnsDaml : Attribute ::= ;");
		pStream.println("XmlnsP1 : Attribute ::= ;");
		pStream.println("XmlnsDc : Attribute ::= ;");
		pStream.println("XmlnsExpr : Attribute ::= ;");
		pStream.println("XmlnsList : Attribute ::= ;");
    		pStream.println("XmlBase : Attribute ::= ;");
		pStream.println("RdfResource : Attribute ::= ;");
		pStream.println("RdfAbout : Attribute ::= ;");
		pStream.println("RdfParseType : Attribute ::= ;");
		pStream.println("Version : Attribute ::= ;");
		pStream.println("Value ::= <STRING_LITERAL>;");
		pStream.println("OwlIdentifier ::= <IDENTIFIER>;");
		pStream.println("AttrValue ::= <STRING_LITERAL>;");
		pStream.println();
		pStream.println("// Generated types");
		super.genAbsGrammar(pStream);
    }

	

    void OwlClassDecl.genAbsGrammar(PrintStream pStream) {
		pStream.print(getId());
		pStream.print(" : "+getSuperClass().getId());	
		pStream.print(" ::=");
// 		getOwnRestrictions().genAbsGrammar(pStream);
		getProperties().genAbsGrammar(pStream);
		pStream.println(";");
// 		Properties p = getProperties();
// 		System.out.println(getId());
// 		for (int i=0; i<p.getNumProperty(); i++) {
// 			System.out.println("  "+((ComplexElement) p.getProperty(i)).getId());
// 		}
    }

	void ClassDeclaration.genAbsGrammar(PrintStream pStream) {
		if (name().equals("Thing")) {
			// Thing is handled explicitly
			return;
		}
		System.out.println(name());
		dumpTree(" ",System.out);
		pStream.print(name());
		pStream.print(" : "+getSuperClass().name());	
		pStream.print(" ::=");
		getProperties().genAbsGrammar(pStream);
		pStream.println(";");
	}

	void Properties.genAbsGrammar(PrintStream pStream) {
		for (int i=0; i<getNumProperty(); i++) {
			pStream.print(" ");
			getProperty(i).genAbsGrammarEntry(pStream);
		}
	}

    void OwlProperty.genAbsGrammarEntry(PrintStream pStream) {
		pStream.print(name());
		pStream.print(":Thing");
// 		if (allValuesFrom()) {
			pStream.print("*");
// 		}
    }

	void Element.genAbsGrammarEntry(PrintStream pStream) {}

	void ObjectPropertyDomain.genAbsGrammarEntry(PrintStream pStream) {
		pStream.print(objectProperty().name());
		pStream.print(":Thing*");
	}

	void DataPropertyDomain.genAbsGrammarEntry(PrintStream pStream) {
		pStream.print("<"+dataProperty().name()+">");
		// pStream.print(":String*");
	}

    	void Restrictions.genAbsGrammar(PrintStream pStream) {
		for (int i=0; i<getNumOwlRestriction(); i++) {
			pStream.print(" ");
			getOwlRestriction(i).genAbsGrammar(pStream);
		}
	}

    void OwlRestriction.genAbsGrammar(PrintStream pStream) {
		pStream.print(name());
		pStream.print(":Thing");
		if (allValuesFrom()) {
			pStream.print("*");
		}
    }

    String OwlRestriction.getRestrictionPropertyId() {
		for (int i=0; i<getNumElement(); i++) {
			ComplexElement e = (ComplexElement) getElement(i);
			if (e instanceof OwlOnProperty) {
				return e.getId(); 
			}
		}
		return "_Unknown_";
    } 

    String OwlRestriction.getRestrictionClassId() {
		for (int i=0; i<getNumElement(); i++) {
			ComplexElement e = (ComplexElement) getElement(i);
			if (e instanceof OwlAllValuesFrom || 
				e instanceof OwlSomeValuesFrom) {
				return e.getId(); // Ugly as hell!!
			}
		}
		return "_Unknown_";
    } 

    syn lazy boolean OwlRestriction.allValuesFrom() {
		for (int i=0; i<getNumElement(); i++) {
			if (getElement(i) instanceof OwlAllValuesFrom) {
				return true;
			}
		}
		return false;
    }

}

aspect GenAspects {
	public void Start.genAspects(PrintStream pStream) {
		pStream.println();
		pStream.println("import java.io.PrintStream;");
		pStream.println();
		genRewrites(pStream);
		genMisc(pStream);
		genPrettyPrinter(pStream);
	}
}

aspect GenPrettyPrinter {
	public void ASTNode.genPrettyPrinter(PrintStream pStream) {
		for (int i=0; i<getNumChild(); i++) {
			getChild(i).genPrettyPrinter(pStream);
		}
	}

	public void Start.genPrettyPrinter(PrintStream pStream) {
		pStream.println();
		pStream.println("aspect PrettyPrinter {");
		pStream.println("  public void ASTNode.prettyPrint(String indent, PrintStream pStream) {");
		pStream.println("    for (int i=0; i<getNumChild(); i++) {");
    		pStream.println("      getChild(i).prettyPrint(indent,pStream);");
		pStream.println("    }");
		pStream.println("  }\n");
		pStream.println("  public void Start.prettyPrint(String indent, PrintStream pStream) {");
		pStream.println("    for (int i=0; i<getNumElement(); i++) {");
		pStream.println("      getElement(i).prettyPrint(indent,pStream);");
		pStream.println("    }");
		pStream.println("  }\n");
		pStream.println("  syn String Attribute.id() = \"\";");
		pStream.println("  eq RdfAbout.id() = \"rdf:about\";");
		pStream.println("  eq RdfDatatype.id() = \"rdf:datatype\";");
		pStream.println("  eq RdfId.id() = \"rdf:ID\";");
		pStream.println("  eq RdfParseType.id() = \"rdf:parseType\";");
		pStream.println("  eq RdfResource.id() = \"rdf:resource\";");
		pStream.println("  eq XmlBase.id() = \"xml:base\";");
		pStream.println("  eq Xmlns.id() = \"xmlns\";");
		pStream.println("  eq XmlnsDaml.id() = \"xmlns:daml\";");
		pStream.println("  eq XmlnsDc.id() = \"xmlns:dc\";");
		pStream.println("  eq XmlnsOwl.id() = \"xmlns:owl\";");
		pStream.println("  eq XmlnsP1.id() = \"xmlns:p1\";");
		pStream.println("  eq XmlnsProtege.id() = \"xmlns:protege\";");
		pStream.println("  eq XmlnsRdf.id() = \"xmlns:rdf\";");
		pStream.println("  eq XmlnsRdfs.id() = \"xmlns:rdfs\";");
		pStream.println("  eq XmlnsSwrl.id() = \"xmlns:swrl\";");
		pStream.println("  eq XmlnsSwrlb.id() = \"xmlns:swrlb\";");
		pStream.println("  eq XmlnsXsd.id() = \"xmlns:xsd\";");
		pStream.println("  eq XmlnsXsp.id() = \"xmlns:xsp\";");
		pStream.println("  public void Attribute.prettyPrint(String indent, PrintStream pStream) {");
		pStream.println("    System.out.print(\" \"+id()+\"=\"+getValue().getSTRING_LITERAL());");
		pStream.println("  }\n");
		pStream.println(ind(1)+"public void ValueElement.prettyPrint(String indent, PrintStream pStream) {");
		pStream.println(ind(2)+"System.out.print(indent+\"<value \");");
		pStream.println(ind(2)+"for (int i=0; i<getNumAttribute(); i++) {");
		pStream.println(ind(3)+"getAttribute(i).prettyPrint(indent,pStream);");
		pStream.println(ind(2)+"}");
		pStream.println(ind(2)+"System.out.println(\">\");");
		pStream.println(ind(2)+"System.out.println(indent+\"  \"+value());");
		pStream.println(ind(2)+"System.out.println(indent+\"</value>\");");
		pStream.println(ind(1)+"}\n");
		// Generate prettyprinter for ClassUse
		pStream.println(ind(1)+"public void ClassUse.prettyPrint(String indent, PrintStream pStream) {");
		pStream.println(ind(2)+"System.out.print(indent+\"<\"+name());");
		pStream.println(ind(2)+"for (int i=0; i<getNumAttribute(); i++) {");
		pStream.println(ind(3)+"getAttribute(i).prettyPrint(indent,pStream);");
		pStream.println(ind(2)+"}");
		pStream.println(ind(2)+"System.out.println(\"/>\");");
		pStream.println(ind(1)+"}\n");
		super.genPrettyPrinter(pStream);
		pStream.println("}\n");
	}

	public void OwlClassDecl.genPrettyPrinter(PrintStream pStream) {
		// Generate prettyprinter for class declaration
		pStream.print(ind(1)+"public void "+name());
		pStream.println(".prettyPrint(String indent, PrintStream pStream) {");
		pStream.println(ind(2)+"System.out.print(indent+\"<"+name()+"\");");
		pStream.println(ind(2)+"for (int i=0; i<getNumAttribute(); i++) {");
		pStream.println(ind(3)+"getAttribute(i).prettyPrint(indent,pStream);");
		pStream.println(ind(2)+"}");
		pStream.println("System.out.println(\">\");");
		pStream.println(ind(2)+"String childIndent = indent + \"  \";");
// 		Restrictions restr = getRestrictions();
// 		for (int i=0; i<restr.getNumOwlRestriction(); i++) {
// 			OwlRestriction r = restr.getOwlRestriction(i);
// 			pStream.println(ind(2)+"System.out.println(childIndent+\"<has"+
// 							r.name()+">\");");
// 			pStream.println(ind(2)+"for (int i=0; i<getNum"+r.name()+"(); i++) {");
// 			pStream.println(ind(3)+"get"+r.name()+
// 							"(i).prettyPrint(childIndent+\"  \",pStream);");
// 			pStream.println(ind(2)+"}");
    // 			pStream.println(ind(2)+"System.out.println(childIndent+\"</has"+
// 							r.name()+">\");");
// 		}
		pStream.println(ind(2)+"for (int i=0; i<getNumElement(); i++) {");
		pStream.println(ind(3)+"getElement(i).prettyPrint(childIndent,pStream);");
		pStream.println(ind(2)+"}");
		pStream.println(ind(1)+"System.out.println(indent+\"</"+name()+">\");");
		pStream.println(ind(1)+"}\n");		
	}
}

aspect GenRewrites {

    public void ASTNode.genRewrites(PrintStream pStream) {
		for (int i=0; i<getNumChild(); i++) {
			getChild(i).genRewrites(pStream);
		}
    }

	public void Start.genRewrites(PrintStream pStream) {
		pStream.println();
		pStream.println("aspect Rewrites {");
		pStream.println(ind(1)+"rewrite ComplexElement {");
		pStream.println(ind(2)+"when (!(this instanceof ClassUse) && getOwlIdentifier().getIDENTIFIER().equals(\"value\") && !(this instanceof ValueElement))");
		pStream.println(ind(3)+"to ValueElement {");
		pStream.println(ind(3)+"ValueElement node = new ValueElement();");
		pStream.println(ind(3)+"node.setOwlIdentifier(getOwlIdentifier());");
		pStream.println(ind(3)+"node.setAttributeList(getAttributeList());");
		pStream.println(ind(3)+"node.setElementList(getElementList());");
		pStream.println(ind(3)+"return node;");
		pStream.println(ind(2)+"}");
		pStream.println(ind(1)+"}");

		// TEMPORARY!!!!!
		// Rewrite isSkillOf/hasSkill/hasProperty/isPropertyOf to ClassUse.
		// Should probably be auto-generated instead.
		pStream.println(ind(1)+"rewrite ComplexElement {");
// 		pStream.println(ind(2)+"when ((name().equals(\"hasSkill\")");
// 		pStream.println(ind(2)+"|| name().equals(\"hasProperty\"))");
// 		pStream.println("&& getNumAttribute() > 0 && getAttribute(0) instanceof RdfResource)");
// 		pStream.println(ind(2)+"to ClassUse {");
// 		pStream.println(ind(3)+"ClassUse use = new ClassUse();");
// 		pStream.println(ind(3)+"String att = getAttribute(0).name();");
// 		pStream.println(ind(3)+"use.setOwlIdentifier(new OwlIdentifier(att.substring(att.indexOf('#')+1,att.indexOf('_'))));");
// 		pStream.println(ind(3)+"use.setAttributeList(getAttributeList());");
// 		pStream.println(ind(3)+"use.setElementList(new List());");
// 		pStream.println(ind(3)+"return use;");
// 		pStream.println(ind(2)+"}");
		pStream.println(ind(2)+"when (name().equals(\"rdf:RDF\") && !(this instanceof RdfDeclaration))");
		pStream.println(ind(2)+"to RdfDeclaration {");
		pStream.println(ind(3)+"return new RdfDeclaration(getOwlIdentifier(),getAttributeList(),getElementList());");
		pStream.println(ind(2)+"}");


// 		pStream.println(ind(2)+"when ((name().equals(\"isSkillOf\")");
// 		pStream.println(ind(2)+"|| name().equals(\"isPropertyOf\"))");
// 		pStream.println("&& getNumAttribute() > 0 && getAttribute(0) instanceof RdfResource)");
// 		pStream.println(ind(2)+"to ClassUse {");
// 		pStream.println(ind(3)+"ClassUse use = new ClassUse();");
// 		pStream.println(ind(3)+"String att = getAttribute(0).name();");
// 		pStream.println(ind(3)+"use.setOwlIdentifier(new OwlIdentifier(att.substring(att.indexOf('#')+1,att.indexOf('_'))));");
// 		pStream.println(ind(3)+"use.setAttributeList(getAttributeList());");
// 		pStream.println(ind(3)+"use.setElementList(new List());");
// 		pStream.println(ind(3)+"return use;");
// 		pStream.println(ind(2)+"}");
		pStream.println(ind(1)+"}");
	  

		super.genRewrites(pStream);
		pStream.println("}");
    	}

	public void OwlClassDecl.genRewrites(PrintStream pStream) {
		String ind = "  ";
		int ix = 0;
		// Specialize ComplexElements to the actual class in the ontology
		pStream.println(ind(1)+"rewrite ComplexElement {");
		pStream.println(ind(2)+"when (!(this instanceof ClassUse) && getOwlIdentifier().getIDENTIFIER().equals(\""+
						name()+"\") && !(this instanceof Thing))");
		pStream.println(ind(3)+"to "+name()+" {");

		pStream.println(ind(3)+name()+" node = new "+name()+"();");
		pStream.println(ind(3)+"node.setOwlIdentifier(getOwlIdentifier());");
		pStream.println(ind(3)+"node.setAttributeList(getAttributeList());");
 		pStream.println(ind(3)+"node.setElementList(getElementList());");
// 		Restrictions restr = getRestrictions();
// 		pStream.println(ind(3)+"List l, remain;");
// 		pStream.println(ind(3)+"remain = new List();");
// 		for (int i=0; i<restr.getNumOwlRestriction(); i++) {
// 			OwlRestriction r = restr.getOwlRestriction(i);
// 			pStream.println(ind(3)+"l = new List();");
// 			pStream.println(ind(3)+"for (int i=0; i<getNumElement(); i++) {");
// 			pStream.println(ind(4)+"ComplexElement e = (ComplexElement) getElement(i);");
// 			pStream.println(ind(4)+"if (e.getNumElement() > 0 && e.getElement(0) instanceof "+r.name()+" ) {");
// 			pStream.println(ind(5)+"l.add(e.getElement(0));");
// 			pStream.println(ind(4)+"}");
// 			pStream.println(ind(3)+"}");
// 			if (r.allValuesFrom()) {
// 				pStream.println(ind(3)+"node.set"+r.name()+"List(l);");
// 			} else {
// 				pStream.println(ind(3)+r.name()+" c"+ix+" = new "+r.name()+"();");
// 				pStream.println(ind(3)+"node.set"+r.name()+"(c"+(ix++)+");");
// 			}
// 		}
// 		pStream.println(ind(3)+"for (int i=0; i<getNumElement(); i++) {");
// 		pStream.println(ind(4)+"if (getElement(i) instanceof ValueElement) {");
// 		pStream.println(ind(5)+"remain.add(getElement(i));");
// 		pStream.println(ind(4)+"}");
// 		pStream.println(ind(3)+"}");
//   		pStream.println(ind(3)+"node.setElementList(remain);");
		pStream.println(ind(3)+"return node;");
		pStream.println(ind(2)+"}");
		pStream.println(ind(1)+"}");
		pStream.println();
		// Rearrange device nodes on the AST to get away from the
		// current diagonal style from Protege
		pStream.println(ind(1)+"rewrite "+name()+" {");
		pStream.println(ind(2)+"when (!isTopElement() && !(getAttribute(0) instanceof RdfId))");
		pStream.println(ind(2)+"to ClassUse {");
		pStream.println(ind(3)+"ClassUse use = new ClassUse();");
		pStream.println(ind(3)+"use.setOwlIdentifier(new OwlIdentifier(\""+name()+"\"));");
		pStream.println(ind(3)+"String id = getAttribute(0).getValue().getSTRING_LITERAL();");
// 		pStream.println(ind(3)+"Value val = new Value(\"\\\"#\"+id.substring(1,id.length()));");
		pStream.println(ind(3)+"Value val = new Value(id);");
		pStream.println(ind(3)+"use.setAttributeList(new List().add(new RdfResource(val)));");
		pStream.println(ind(3)+"use.setElementList(new List());");
		pStream.println(ind(3)+"getRdfDecl().addElement(this);");
		pStream.println(ind(3)+"return use;");
		pStream.println(ind(2)+"}");
		pStream.println(ind(1)+"}");
	}

}

aspect GenMisc {

    public void ASTNode.genMisc(PrintStream pStream) {
		for (int i=0; i<getNumChild(); i++) {
			getChild(i).genMisc(pStream);
		}
        }

	public void Start.genMisc(PrintStream pStream) {
		pStream.println();
		pStream.println("aspect Misc {");
		pStream.println();
		pStream.println(ind(1)+"String ValueElement.value() {");
		pStream.println(ind(2)+"StringBuffer b = new StringBuffer();");
		pStream.println(ind(2)+"for (int i=0; i<getNumElement(); i++) {");
		pStream.println(ind(3)+"b.append(((SimpleElement) getElement(i)).value());");
		pStream.println(ind(3)+"b.append(\" \");");
		pStream.println(ind(2)+"}");
		pStream.println(ind(2)+"return b.toString().trim();");
		pStream.println(ind(1)+"}");
		pStream.println();

		// SimpleElement.value()
		pStream.println(ind(1)+"syn String SimpleElement.value() = \"\";");
		pStream.println(ind(1)+"eq StringElement.value() = getLITERAL();");
		pStream.println(ind(1)+"eq IntElement.value() = getLITERAL();");
		pStream.println(ind(1)+"eq FloatElement.value() = getLITERAL();");
		
		// Thing.isTopElement()
		pStream.println(ind(1)+"boolean Thing.isTopElement() {");
		pStream.println(ind(2)+"return getParent().getParent() instanceof RdfDeclaration;");
		pStream.println(ind(1)+"}");

		// ASTNode.getStart()
		pStream.println(ind(1)+"Start ASTNode.getStart() {");
		pStream.println(ind(2)+"return getParent().getStart();");
		pStream.println(ind(1)+"}");
		pStream.println(ind(1)+"Start Start.getStart() {");
		pStream.println(ind(2)+"return this;");
		pStream.println(ind(1)+"}");
		
		// ASTNode.getRdfDecl()
		pStream.println(ind(1)+"RdfDeclaration ASTNode.getRdfDecl() {");
		pStream.println(ind(2)+"return getParent().getRdfDecl();");
		pStream.println(ind(1)+"}");
		pStream.println(ind(1)+"RdfDeclaration RdfDeclaration.getRdfDecl() {");
		pStream.println(ind(2)+"return this;");
		pStream.println(ind(1)+"}");
		
		// ComplexElement.name()
		pStream.println(ind(1)+"public String ComplexElement.name() {");
		pStream.println(ind(2)+"return getOwlIdentifier().getIDENTIFIER();");
		pStream.println(ind(1)+"}");
		pStream.println(ind(1)+"public String Attribute.name() {");
		pStream.println(ind(2)+"return getValue().getSTRING_LITERAL();");
		pStream.println(ind(1)+"}");
		pStream.println(ind(1)+"public String Attribute.value() {");
		pStream.println(ind(2)+"String s = getValue().getSTRING_LITERAL();");
		pStream.println(ind(2)+"int hash = s.indexOf('#');");
		pStream.println(ind(2)+"int firstCit = s.indexOf('\"');");
		pStream.println(ind(2)+"int lastCit = s.lastIndexOf('\"');");
		pStream.println(ind(2)+"hash = hash < 0 ? 0 : hash;");
		pStream.println(ind(2)+"firstCit = firstCit < 0 ? 0 : firstCit;");
		pStream.println(ind(2)+"lastCit = lastCit > firstCit ? lastCit : s.length()-1;");
		pStream.println(ind(2)+"return s.substring(Math.max(hash,firstCit)+1,lastCit);");
		pStream.println(ind(1)+"}");

		// ClassUse.decl()
// 		pStream.println(ind(1)+"syn lazy Thing ClassUse.decl() {");
// 		pStream.println(ind(2)+
// 		pStream.println(ind(1)+"}\n");

		super.genMisc(pStream);
		pStream.println("}");
	}

    }

aspect ParserGen {
	public void Start.genParser(PrintStream pStream) {
		pStream.println("import java.io.FileNotFoundException;");
		pStream.println("import java.io.FileReader;");
		pStream.println("import java.io.InputStreamReader;");
		pStream.println("import java.io.Reader;");
		pStream.println("");
		pStream.println("import AST.OWLParser;");
		pStream.println("import AST.ParseException;");
		pStream.println("import AST.Start;");
		pStream.println("");
		pStream.println("public class Parser {");
		pStream.println();
		pStream.println("	protected static Start parse(String args[]) {");
		pStream.println("		Reader r = getReader(args);");
		pStream.println("		Start ast = null;");
		pStream.println("		try {");
		pStream.println("			OWLParser parser = new OWLParser(r);");
		pStream.println();
		pStream.println("			ast = parser.Start();");
		pStream.println("		} catch (ParseException e) {");
		pStream.println("			System.out.println(e.getMessage());");
		pStream.println("		}");
		pStream.println("		return ast;");
		pStream.println("	}");
		pStream.println();
		pStream.println("	private static Reader getReader(String[] args) {");
		pStream.println("		Reader r = null;");
		pStream.println("		if (args.length != 1) {");
		pStream.println("			r = new InputStreamReader(System.in);");
		pStream.println("		} else {");
		pStream.println("			try {");
		pStream.println("				r = new FileReader(args[0]);");
		pStream.println("			} catch (FileNotFoundException e1) {");
		pStream.println("				System.err.println(\"Dumper: file \" + args[0] + \" not found\");");
		pStream.println("			}");
		pStream.println("		}");
		pStream.println("		return r;");
		pStream.println("	}");
		pStream.println("}");
	}
}