amath/app/main/token.cpp

87 lines
2.2 KiB
C++

/*
* Copyright (c) 2015-2016 Carsten Sonne Larsen
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
*
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
* IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
* THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*
*/
#include "clib.h"
#include "main/token.h"
#if __GNUC__ > 2
#pragma GCC diagnostic ignored "-Wshadow"
#endif
Token::Token(Token* last, Symbol symbol, int pos)
{
this->last = last;
this->symbol = symbol;
this->pos = pos;
this->text = NOMEM;
this->next = NOMEM;
}
Token::Token(Token* last, Symbol symbol, const char *text, int pos)
{
this->last = last;
this->symbol = symbol;
this->pos = pos;
this->next = NOMEM;
AllocAndCopy(&this->text, text);
}
Token::~Token()
{
if (text != NOMEM) {
delete [] text;
}
if (next != NOMEM) {
delete next;
}
}
Token* Token::GetLastToken()
{
return last;
}
Token* Token::GetNextToken()
{
// Always return a token if requested
if (next == NOMEM) {
next = new Token(this, symend, pos);
}
return next;
}
char* Token::GetText()
{
return text;
}
int Token::GetPos()
{
return pos;
}