test.hpp
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///////////////////////////////////////////////////////////////////////////////
// test.hpp
//
// Copyright 2008 Eric Niebler. Distributed under the Boost
// Software License, Version 1.0. (See accompanying file
// LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)
#ifndef BOOST_XPRESSIVE_TEST_TEST_HPP_EAN_10_04_2005
#define BOOST_XPRESSIVE_TEST_TEST_HPP_EAN_10_04_2005
// MS compatible compilers support #pragma once
#if defined(_MSC_VER)
# pragma once
#endif
#include <string>
#include <vector>
#include <cstdio>
#include <cstdarg>
#include <functional>
#include <boost/range/iterator_range.hpp>
#include <boost/xpressive/xpressive_static.hpp>
#include <boost/test/unit_test.hpp>
using namespace boost::unit_test;
using namespace boost::xpressive;
#define L(x) BOOST_XPR_CSTR_(char_type, x)
#define BOOST_XPR_CHECK(pred) \
if( pred ) {} else { BOOST_ERROR( this->section_ << " : " << #pred ); }
using namespace boost::xpressive;
///////////////////////////////////////////////////////////////////////////////
// backrefs
//
#if defined(__cplusplus_cli)
#pragma managed(push, off)
#endif
template<typename Char>
inline std::vector<std::basic_string<Char> > backrefs(Char const *br0, ...)
{
using namespace std;
std::vector<std::basic_string<Char> > backrefs;
if(0 != br0)
{
backrefs.push_back(br0);
va_list va;
va_start(va, br0);
Char const *brN;
while(0 != (brN = va_arg(va, Char const *)))
{
backrefs.push_back(brN);
}
va_end(va);
}
return backrefs;
}
#if defined(__cplusplus_cli)
#pragma managed(pop)
#endif
///////////////////////////////////////////////////////////////////////////////
//
struct no_match_t {};
no_match_t const no_match = {};
///////////////////////////////////////////////////////////////////////////////
// xpr_test_case
//
template<typename BidiIter>
struct xpr_test_case
{
typedef BidiIter iterator_type;
typedef typename boost::iterator_value<iterator_type>::type char_type;
typedef basic_regex<iterator_type> regex_type;
typedef std::basic_string<char_type> string_type;
typedef std::vector<string_type> backrefs_type;
xpr_test_case(std::string section, string_type str, regex_type rex, backrefs_type brs)
: section_(section)
, str_(str)
, rex_(rex)
, brs_(brs)
{
}
xpr_test_case(std::string section, string_type str, regex_type rex, no_match_t)
: section_(section)
, str_(str)
, rex_(rex)
, brs_()
{
}
void run() const
{
char_type const empty[] = {0};
match_results<BidiIter> what;
if(regex_search(this->str_, what, this->rex_))
{
// match succeeded: was it expected to succeed?
BOOST_XPR_CHECK(what.size() == this->brs_.size());
for(std::size_t i = 0; i < what.size() && i < this->brs_.size(); ++i)
{
BOOST_XPR_CHECK((!what[i].matched && this->brs_[i] == empty) || this->brs_[i] == what[i].str());
}
}
else
{
// match failed: was it expected to fail?
BOOST_XPR_CHECK(0 == this->brs_.size());
}
}
private:
std::string section_;
string_type str_;
regex_type rex_;
std::vector<string_type> brs_;
};
///////////////////////////////////////////////////////////////////////////////
// test_runner
template<typename BidiIter>
struct test_runner
{
typedef xpr_test_case<BidiIter> argument_type;
typedef void result_type;
void operator ()(xpr_test_case<BidiIter> const &test) const
{
test.run();
}
};
///////////////////////////////////////////////////////////////////////////////
// helpful debug routines
///////////////////////////////////////////////////////////////////////////////
///////////////////////////////////////////////////////////////////////////////
// remove all occurances of sz from str
inline void string_remove(std::string &str, char const *sz)
{
std::string::size_type i = 0, n = std::strlen(sz);
while(std::string::npos != (i=str.find(sz,i)))
{
str.erase(i,n);
}
}
///////////////////////////////////////////////////////////////////////////////
// display_type2
// for type T, write typeid::name after performing some substitutions
template<typename T>
inline void display_type2()
{
std::string str = typeid(T).name();
string_remove(str, "struct ");
string_remove(str, "boost::");
string_remove(str, "xpressive::");
string_remove(str, "detail::");
string_remove(str, "fusion::");
//std::printf("%s\n\n", str.c_str());
std::printf("%s\nwdith=%d\nuse_simple_repeat=%s\n\n", str.c_str()
, detail::width_of<T, char>::value
, detail::use_simple_repeat<T, char>::value ? "true" : "false");
}
///////////////////////////////////////////////////////////////////////////////
// display_type
// display the type of the deduced template argument
template<typename T>
inline void display_type(T const &)
{
display_type2<T>();
}
#endif