silent.cpp

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/*-
 * Copyright (c) 2014-2018 Carsten Sonne Larsen <cs@innolan.net>
 * 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.
 *
 * Project homepage:
 * https://amath.innolan.net
 * 
 */

#include "amath.h"
#include "silent.h"

SilentStatement::SilentStatement(StatementNode* statement) :
    StatementNode(), statement(statement)
{
}

SilentStatement::~SilentStatement()
{
    if (statement != nullptr)
    {
        delete statement;
    }
}

char* SilentStatement::Execute()
{
    statement->Execute();
    return statementText;
}

SyntaxNode* SilentStatement::GetNext()
{
    if (iterator == nullptr)
    {
        iterator = statement;
        return iterator;
    }

    return nullptr;
}

void SilentStatement::Attach(SyntaxNode* node)
{
    if (statement == nullptr)
    {
        statement = static_cast<StatementNode*>(node);
        node->SetParent(this);
    }
}

void SilentStatement::Detach(SyntaxNode* node)
{
    if (statement == node)
    {
        statement = nullptr;
    }
}

void SilentStatement::Replace(SyntaxNode* n, SyntaxNode* x)
{
    if (statement == n)
    {
        delete statement;
        statement = static_cast<StatementNode*>(x);
    }
}