/**
* Copyright 2004-2016 Riccardo Solmi. All rights reserved.
* This file is part of the Whole Platform.
*
* The Whole Platform 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.
*
* The Whole Platform 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 the Whole Platform. If not, see <http://www.gnu.org/licenses/>.
*/
package org.whole.lang.grammars.util;
import org.whole.lang.bindings.BindingManagerFactory;
import org.whole.lang.bindings.IBindingManager;
import org.whole.lang.builders.IBuilderOperation;
import org.whole.lang.builders.ModelBuilderOperation;
import org.whole.lang.grammars.codebase.GrammarsRegistry;
import org.whole.lang.grammars.codebase.IGrammarProvider;
import org.whole.lang.grammars.factories.GrammarsEntityFactory;
import org.whole.lang.grammars.model.DataType;
import org.whole.lang.grammars.model.Grammar;
import org.whole.lang.grammars.model.LanguageDescriptor;
import org.whole.lang.grammars.model.TargetLanguage;
import org.whole.lang.grammars.parsers.GenericPredictiveParser;
import org.whole.lang.grammars.reflect.GrammarsEntityDescriptorEnum;
import org.whole.lang.grammars.visitors.GrammarBasedUnparserVisitor;
import org.whole.lang.grammars.visitors.Grammars2ModelsVisitor;
import org.whole.lang.iterators.IEntityIterator;
import org.whole.lang.iterators.IteratorFactory;
import org.whole.lang.matchers.Matcher;
import org.whole.lang.model.IEntity;
import org.whole.lang.models.model.Model;
import org.whole.lang.operations.InterpreterOperation;
import org.whole.lang.reflect.EntityDescriptor;
import org.whole.lang.util.EntityUtils;
/**
* @author Riccardo Solmi, Enrico Persiani
*/
public class GrammarsUtils {
public static Model deriveModel(Grammar g, boolean normalizeGrammar) {
Grammars2ModelsVisitor v = new Grammars2ModelsVisitor(normalizeGrammar);
v.visit(g);
return (Model) v.getResult();
}
public static String getLanguageURI(Grammar grammar) {
TargetLanguage targetLanguage = grammar.getTargetLanguage();
return Matcher.match(GrammarsEntityDescriptorEnum.URI, targetLanguage) ?
targetLanguage.wStringValue() : ((LanguageDescriptor) targetLanguage).getUri().getValue();
}
@SuppressWarnings("unchecked")
public static <E extends IEntity> E parse(CharSequence source, String grammarUri) {
ModelBuilderOperation mop = new ModelBuilderOperation();
parse(source, grammarUri, mop);
return (E) mop.wGetResult();
}
@SuppressWarnings("unchecked")
public static <E extends IEntity> E parse(CharSequence source, String grammarUri, String nt) {
ModelBuilderOperation mop = new ModelBuilderOperation();
parse(source, grammarUri, mop, nt);
return (E) mop.wGetResult();
}
@SuppressWarnings("unchecked")
public static <E extends IEntity> E parse(CharSequence source, String grammarUri, EntityDescriptor<?> ed) {
ModelBuilderOperation mop = new ModelBuilderOperation();
parse(source, grammarUri, mop, ed);
return (E) mop.wGetResult();
}
public static void parse(CharSequence source, String grammarUri, IBuilderOperation op) {
new GenericPredictiveParser(source, grammarUri, op).wParse();
}
public static void parse(CharSequence source, String grammarUri, IBuilderOperation op, String nt) {
new GenericPredictiveParser(source, grammarUri, op).wParse(nt);
}
public static void parse(CharSequence source, String grammarUri, IBuilderOperation op, EntityDescriptor<?> ed) {
new GenericPredictiveParser(source, grammarUri, op).wParse(ed);
}
// public static <E extends IEntity> E parse(Readable source, Grammar g) {
// }
// public static <E extends IEntity> E parse(Readable source, Grammar g, String nt) {
// }
// public static <E extends IEntity> E parse(Readable source, Grammar g, EntityDescriptor<E> ed) {
// }
public static void unparse(IEntity e, Appendable appendable, String grammarUri) {
unparse(e, appendable, grammarUri, BindingManagerFactory.instance.createBindingManager());
}
public static void unparse(IEntity e, Appendable appendable, String grammarUri, IBindingManager bm) {
Grammar g = GrammarsRegistry.instance().getGrammar(grammarUri);
if (g == null)
throw new IllegalArgumentException("Grammar not deployed: "+grammarUri);
new GrammarBasedUnparserVisitor(e, appendable, bm).visit(g);
}
private static final String[] DATA_TYPES = new String[] {
"boolean","byte","char","double","float","int","long","short","String","java.util.Date"
};
public static String getDataType(DataType dataType) {
return DATA_TYPES[dataType.getValue().getOrdinal()];
}
public static String getGrammarUri(IBindingManager bm) {
String grammarUri = null;
boolean grammarFromBindings = bm.wIsSet("grammar");
if (grammarFromBindings) {
Grammar grammar = (Grammar) bm.wGet("grammar");
InterpreterOperation.interpret(grammar, bm);
grammarUri = grammar.getUri().getValue();
} else if (bm.wIsSet("grammarURI"))
grammarUri = bm.wStringValue("grammarURI");
if (grammarUri == null && bm.wIsSet("grammarProvider")) {
IGrammarProvider provider = (IGrammarProvider) bm.wGetValue("grammarProvider");
grammarUri = provider.getGrammarUri(null);
}
return grammarUri;
}
public static void ensureCompiledPatterns(Grammar grammar) {
IEntityIterator<IEntity> i = IteratorFactory.<IEntity>descendantOrSelfMatcherIterator()
.withPattern(GrammarsEntityDescriptorEnum.RegExp);
i.reset(grammar);
while (i.hasNext()) {
IEntity pattern = i.next();
if (EntityUtils.isNotResolver(pattern)) {
if (Matcher.match(GrammarsEntityDescriptorEnum.CompiledPattern, pattern))
return;
else {
i.reset(grammar);
break;
}
}
}
while (i.hasNext()) {
IEntity e = i.next();
i.set(GrammarsEntityFactory.instance.createCompiledPattern(java.util.regex.Pattern.compile(e.wStringValue())));
}
}
}