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/*
* Copyright (c) 2009 Samit Basu
*
* This program 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 2 of the License, or
* (at your option) any later version.
*
* This program 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 this program; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
*
*/
#ifndef __Parser_hpp__
#define __Parser_hpp__
#include <QString>
#include "Scanner.hpp"
#include "Tree.hpp"
class Parser {
Scanner &m_lex;
unsigned lastpos;
QString lasterr;
void serror(QString);
bool match(TokenValueType t);
void consume();
const Token& expect(TokenValueType t);
const Token& next();
bool matchNumber();
void flushSeperators();
private:
Tree transposeFixup(Tree base);
Tree forStatement();
Tree functionDefinition();
Tree forIndexExpression();
Tree singletonStatement();
Tree dBStepOrTraceStatement();
Tree whileStatement();
Tree ifStatement();
Tree switchStatement();
Tree tryStatement();
Tree expression();
Tree statement();
Tree declarationStatement();
Tree statementSeperator();
Tree identifier();
Tree assignmentStatement();
Tree variableDereference(bool blankRefOK = true);
Tree multiFunctionCall();
Tree matDef(TokenValueType basetok, TokenValueType closebracket);
Tree matrixDefinition();
Tree rowVectorDefinition();
Tree specialFunctionCall();
Tree keyword();
Tree exp(unsigned p);
Tree primaryExpression();
Tree anonymousFunction();
Tree statementList();
public:
Parser(Scanner& lex);
Tree process();
Tree processStatementList();
QString lastErr() {return lasterr;}
unsigned lastPos() {return lastpos;}
void dump();
friend Tree ParseExpressionString(QString);
};
Tree ParseString(QString arg);
Tree ParseExpressionString(QString arg);
#endif
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