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/********************* */
/*! \file argument_extender_implementation.h
** \verbatim
** Top contributors (to current version):
** Paul Meng
** This file is part of the CVC4 project.
** Copyright (c) 2009-2017 by the authors listed in the file AUTHORS
** in the top-level source directory) and their institutional affiliations.
** All rights reserved. See the file COPYING in the top-level source
** directory for licensing information.\endverbatim
**
** \brief Utility class for extending commandline options.
**
** Utility class for extending commandline options.
**/
#include "cvc4_private.h"
#ifndef __CVC4__OPTIONS__ARGUMENT_EXTENDER_IMPLEMENTATION_H
#define __CVC4__OPTIONS__ARGUMENT_EXTENDER_IMPLEMENTATION_H
#include <cstddef>
#include <list>
#include "options/argument_extender.h"
namespace CVC4 {
namespace options {
/**
* Utility class for implementing command line options parsing for the
* Options class. This allows for adding preemption arguments.
* Preemptions are processed immediately after the current argument.
*/
class ArgumentExtenderImplementation : public ArgumentExtender {
public:
/** Constructs a new empty ArgumentExtender.*/
ArgumentExtenderImplementation();
/** Destroys an ArgumentExtender and frees its associated memory.*/
~ArgumentExtenderImplementation();
/**
* This creates a copy of the current arguments list as a new array.
* The new array is stored in argv. The user of this function is
* expected to own the memory of the string array, but not the
* strings themselves. The length of the new array is
* numArguments() and is stored in argc.
*
* Preconditions:
* - argc and argv are non-null.
*/
void getArguments(int* argc, char*** argv) const override;
/** Returns the number of arguments that are . */
size_t numArguments() const override;
/**
* Inserts a copy of element into the front of the arguments list.
* Preconditions: element is non-null and 0 terminated.
*/
void pushFrontArgument(const char* element) override;
/**
* Inserts a copy of element into the back of the arguments list.
* Preconditions: element is non-null and 0 terminated.
*/
void pushBackArgument(const char* element) override;
/** Removes the front of the arguments list.*/
void popFrontArgument() override;
/** Adds a new preemption to the arguments list. */
void pushBackPreemption(const char* element) override;
/**
* Moves all of the preemptions into the front of the arguments
* list.
*/
void movePreemptionsToArguments() override;
/** Returns true iff there is a pending preemption.*/
bool hasPreemptions() const override;
private:
typedef std::list< char* > CharPointerList;
/** Creates of copy of the arugments list.*/
char** copyArguments() const;
/** Allocates a copy and stores a copy in d_allocated.*/
char* allocateCopy(const char* element);
/** Contains a copy of the allocated strings.*/
CharPointerList d_allocated;
/**
* A list of all of the preempted arguments. All of these pointers
* in this list should be contained in d_allocated.
*/
CharPointerList d_preemptions;
/**
* A list of all of the arguments. All of these pointers in this
* list should be contained in d_allocated.
*/
CharPointerList d_arguments;
};/* class ArgumentExtenderImplementation */
}/* CVC4::options namespace */
}/* CVC4 namespace */
#endif /* __CVC4__OPTIONS__ARGUMENT_EXTENDER_IMPLEMENTATION_H */
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