Ichthyostega
7fcee74960
Ouch! Why does C++ lack the most basic everyday stuff? It needn't be performant. It needn't support some fancy higher order container. Just join the f***ing strings. use Bosst?? -- OMG!! pulls in half the metra programming library and tries to work on any concievable range like object. Just somehow our Lumiera Forward Iterators aren't "range-like" enough for boost's taste. Thus let's code up that fucking for-loop ourselves, once and forever.
151 lines
4.2 KiB
C++
151 lines
4.2 KiB
C++
/*
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FormatHelper(Test) - validate formatting and diagnostics helpers
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Copyright (C) Lumiera.org
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2009, Hermann Vosseler <Ichthyostega@web.de>
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This program is free software; you can redistribute it and/or
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modify it under the terms of the GNU General Public License as
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published by the Free Software Foundation; either version 2 of
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the License, or (at your option) any later version.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with this program; if not, write to the Free Software
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Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
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* *****************************************************/
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#include "lib/test/run.hpp"
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#include "lib/format-util.hpp"
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#include "lib/format-string.hpp"
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#include "lib/iter-adapter-stl.hpp"
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#include "lib/error.hpp"
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#include <iostream>
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#include <vector>
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#include <string>
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using lib::transformIterator;
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using lib::iter_stl::eachElm;
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using util::_Fmt;
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using std::vector;
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using std::string;
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using std::to_string;
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using std::cout;
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using std::endl;
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namespace util {
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namespace test {
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class Reticent
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{ };
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class UnReticent
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: public Reticent
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{
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public:
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operator string() const { return "hey Joe!"; }
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};
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class AutoCounter
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{
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static uint cnt;
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uint id_;
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double d_;
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public:
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AutoCounter(double d)
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: id_(++cnt)
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, d_(d*2)
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{ }
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operator string() const
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{
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return _Fmt("Nr.%02d(%3.1f)") % id_ % d_;
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}
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};
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uint AutoCounter::cnt = 0;
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/***************************************************************************//**
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* @test verifies the proper working of some string-formatting helper functions.
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* - util::str() provides a failsafe to-String conversion, preferring
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* an built-in conversion, falling back to just a mangled type string.
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* @see format-util.hpp
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*/
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class FormatHelper_test
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: public Test
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{
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void
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run (Arg)
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{
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check2String();
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checkStringJoin();
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}
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/** @test verify a failsafe to-string conversion. */
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void
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check2String ()
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{
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std::cout << "Displaying some types....\n";
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Reticent closeLipped;
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UnReticent chatterer;
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cout << str (closeLipped) << endl;
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cout << str (closeLipped, "he says: ", "<no comment>") << endl;
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cout << str (chatterer) << endl;
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cout << str (chatterer, "he says: ", "<no comment>") << endl;
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cout << str (false, "the truth: ") << endl;
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cout << str (12.34e55, "just a number: ") << endl;
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cout << str (short(12)) << str (345L) << str ('X') << endl;
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}
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/** @test verify delimiter separated joining of arbitrary collections.
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* - the first test uses a STL container, which means we need to wrap
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* into a lib::RangeIter. Moreover, lexical_cast is used to convert
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* the double numbers into strings.
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* - the second test uses an inline transforming iterator to build a
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* series of AutoCounter objects, which provide a custom string
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* conversion function. Moreover, since the transforming iterator
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* conforms to the Lumiera Forward Iterator concept, we can just
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* move the rvalue into the formatting function without much ado
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*/
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void
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checkStringJoin()
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{
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vector<double> dubious;
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for (uint i=0; i<10; ++i)
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dubious.push_back(1.1*i);
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std::function<AutoCounter(double)> justCount = [](double d){ return AutoCounter(d); };
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cout << join(dubious, "--+--") << endl;
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cout << join(transformIterator(eachElm(dubious)
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,justCount)) << endl;
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}
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};
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LAUNCHER (FormatHelper_test, "unit common");
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}} // namespace util::test
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