/*
* ******************************************************************************
* MontiCore Language Workbench
* Copyright (c) 2015, MontiCore, All rights reserved.
*
* This project 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 3.0 of the License, or (at your option) any later version.
* This library 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 this project. If not, see <http://www.gnu.org/licenses/>.
* ******************************************************************************
*/
package de.monticore.grammar.cocos;
import java.util.Optional;
import de.monticore.codegen.mc2cd.MCGrammarSymbolTableHelper;
import de.monticore.grammar.grammar._ast.ASTLexNonTerminal;
import de.monticore.grammar.grammar._cocos.GrammarASTLexNonTerminalCoCo;
import de.monticore.grammar.symboltable.MCGrammarSymbol;
import de.monticore.grammar.symboltable.MCProdSymbol;
import de.se_rwth.commons.logging.Log;
/**
* Checks that used nonterminals are lexical nonterminals.
*
* @author KH
*/
public class LexNTsOnlyUseLexNTs implements GrammarASTLexNonTerminalCoCo {
public static final String ERROR_CODE = "0xA4017";
public static final String ERROR_MSG_FORMAT = " The lexical production %s must not use" +
" the nonterminal %s because %s is defined by a production of" +
" another type than lexical. Lexical productions may only reference nonterminals" +
" defined by lexical productions.";
@Override
public void check(ASTLexNonTerminal a) {
Optional<MCGrammarSymbol> grammarSymbol = MCGrammarSymbolTableHelper
.getMCGrammarSymbol(a);
Optional<MCProdSymbol> ruleSymbol = MCGrammarSymbolTableHelper.getEnclosingRule(a);
String ruleName = ruleSymbol.isPresent() ? ruleSymbol.get().getName() : "";
if (grammarSymbol.isPresent()
&& grammarSymbol.get().getProdWithInherited(a.getName()).isPresent() &&
!grammarSymbol.get().getProdWithInherited(a.getName()).get().isLexerProd()) {
Log.error(String.format(ERROR_CODE + ERROR_MSG_FORMAT, ruleName, a.getName(), a.getName()),
a.get_SourcePositionStart());
}
}
}