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/* This file is part of kdev-pg-qt
Copyright (C) 2005 Roberto Raggi <roberto@kdevelop.org>
Copyright (C) 2006 Jakob Petsovits <jpetso@gmx.at>
Copyright (C) 2006 Alexander Dymo <adymo@kdevelop.org>
This library is free software; you can redistribute it and/or
modify it under the terms of the GNU Library General Public
License as published by the Free Software Foundation; either
version 2 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
Library General Public License for more details.
You should have received a copy of the GNU Library General Public License
along with this library; see the file COPYING.LIB. If not, write to
the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
Boston, MA 02110-1301, USA.
*/
#ifndef KDEV_PG_CHECKER_H
#define KDEV_PG_CHECKER_H
#include "kdev-pg.h"
#include "kdev-pg-default-visitor.h"
/**
* @file
* Checks for conflicts and some errors.
* TODO: split conflict-computation and conflict-message-printing
*/
namespace KDevPG
{
class EmptyFirstChecker: protected DefaultVisitor
{
public:
void operator()(Model::Node *node);
protected:
virtual void visitNonTerminal(Model::NonTerminalItem *node);
virtual void visitInlinedNonTerminal(Model::InlinedNonTerminalItem *node);
virtual void visitSymbol(Model::SymbolItem *node);
};
class EmptyOperatorChecker: protected DefaultVisitor
{
public:
void operator()(Model::Node *node);
protected:
virtual void visitOperator(Model::OperatorItem *node);
};
class FirstFirstConflictChecker: protected DefaultVisitor
{
public:
void operator()(Model::Node *node);
protected:
void check(Model::Node *left, Model::Node *right);
virtual void visitEvolve(Model::EvolveItem *node);
virtual void visitAlternative(Model::AlternativeItem *node);
virtual void visitInlinedNonTerminal(Model::InlinedNonTerminalItem *node);
private:
Model::SymbolItem *mSymbol;
Model::Node *mCheckedNode;
};
class FirstFollowConflictChecker: protected DefaultVisitor
{
public:
void operator()(Model::Node *node);
protected:
void check(Model::Node *node, Model::Node *sym = 0);
virtual void visitAlternative(Model::AlternativeItem *node);
virtual void visitCons(Model::ConsItem *node);
virtual void visitPlus(Model::PlusItem *node);
virtual void visitStar(Model::StarItem *node);
virtual void visitInlinedNonTerminal(Model::InlinedNonTerminalItem *node);
private:
Model::SymbolItem *mSymbol;
};
class FollowDepChecker
{
public:
FollowDepChecker(Model::Node *terminal): mTerminal(terminal) {}
void check(Model::Node *n);
private:
Model::Node *mTerminal;
World::NodeSet mVisited;
};
class UndefinedSymbolChecker: protected DefaultVisitor
{
public:
void operator()(Model::Node *node);
protected:
virtual void visitSymbol(Model::SymbolItem *node);
virtual void visitVariableDeclaration(Model::VariableDeclarationItem *node);
virtual void visitInlinedNonTerminal(Model::InlinedNonTerminalItem *node);
private:
Model::SymbolItem *mSymbol;
};
class UndefinedTokenChecker: protected DefaultVisitor
{
public:
void operator()(Model::Node *node);
protected:
virtual void visitTerminal(Model::TerminalItem *node);
virtual void visitInlinedNonTerminal(Model::InlinedNonTerminalItem *node);
private:
Model::SymbolItem *mSymbol;
};
class ProblemSummaryPrinter
{
public:
void operator()();
static void reportFirstFirstConflict();
static void reportFirstFollowConflict();
static void reportError();
private:
static int mFirstFirstConflictCount;
static int mFirstFollowConflictCount;
static int mErrorCount;
};
}
#endif // KDEV_PG_CHECKER_H
// kate: space-indent on; indent-width 2; tab-width 2; show-tabs on;
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