366 lines
13 KiB
C++
366 lines
13 KiB
C++
/*
|
||
DiffVirtualisedApplication(Test) - apply structural changes to unspecific private data structures
|
||
|
||
Copyright (C) Lumiera.org
|
||
2016, Hermann Vosseler <Ichthyostega@web.de>
|
||
|
||
This program is free software; you can redistribute it and/or
|
||
modify it under the terms of the GNU General Public License as
|
||
published by the Free Software Foundation; either version 2 of
|
||
the License, or (at your option) any later version.
|
||
|
||
This program is distributed in the hope that it will be useful,
|
||
but WITHOUT ANY WARRANTY; without even the implied warranty of
|
||
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
||
GNU General Public License for more details.
|
||
|
||
You should have received a copy of the GNU General Public License
|
||
along with this program; if not, write to the Free Software
|
||
Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
|
||
|
||
* *****************************************************/
|
||
|
||
|
||
#include "lib/test/run.hpp"
|
||
#include "lib/format-util.hpp"
|
||
#include "lib/diff/tree-diff-application.hpp"
|
||
#include "lib/diff/test-mutation-target.hpp"
|
||
#include "lib/iter-adapter-stl.hpp"
|
||
#include "lib/time/timevalue.hpp"
|
||
#include "lib/format-cout.hpp" //////////TODO necessary?
|
||
#include "lib/format-string.hpp"
|
||
//#include "lib/format-util.hpp"
|
||
#include "lib/util.hpp"
|
||
|
||
#include <string>
|
||
#include <vector>
|
||
#include <memory>
|
||
|
||
using lib::iter_stl::snapshot;
|
||
using util::isnil;
|
||
using util::join;
|
||
using util::_Fmt;
|
||
using util::join;
|
||
using std::unique_ptr;
|
||
using std::make_unique;
|
||
using std::string;
|
||
using std::vector;
|
||
using lib::time::Time;
|
||
using util::BOTTOM_INDICATOR;
|
||
|
||
|
||
namespace lib {
|
||
namespace diff{
|
||
namespace test{
|
||
|
||
namespace {//Test fixture....
|
||
|
||
// define some GenNode elements
|
||
// to act as templates within the concrete diff
|
||
// NOTE: everything in this diff language is by-value
|
||
const GenNode ATTRIB1("α", 1), // attribute α = 1
|
||
ATTRIB2("β", int64_t(2)), // attribute α = 2L (int64_t)
|
||
ATTRIB3("γ", 3.45), // attribute γ = 3.45 (double)
|
||
TYPE_X("type", "ξ"), // a "magic" type attribute "Xi"
|
||
TYPE_Z("type", "ζ"), //
|
||
CHILD_A("a"), // unnamed string child node
|
||
CHILD_B('b'), // unnamed char child node
|
||
CHILD_T(Time(12,34,56,78)), // unnamed time value child
|
||
SUB_NODE = MakeRec().genNode(), // empty anonymous node used to open a sub scope
|
||
ATTRIB_NODE = MakeRec().genNode("δ"), // empty named node to be attached as attribute δ
|
||
GAMMA_PI("γ", 3.14159265); // happens to have the same identity (ID) as ATTRIB3
|
||
|
||
|
||
/**
|
||
* opaque private data structure to apply the diff.
|
||
* This class offers to build a binding for diff messages,
|
||
* which basically maps its internal structures onto the
|
||
* generic "object" scheme underlying the diff language.
|
||
*/
|
||
class Opaque
|
||
{
|
||
idi::BareEntryID key_;
|
||
string type_ = Rec::TYPE_NIL;
|
||
|
||
int alpha_ = -1;
|
||
int64_t beta_ = -1;
|
||
double gamma_ = -1;
|
||
|
||
unique_ptr<Opaque> delta_;
|
||
|
||
vector<Opaque> nestedObj_;
|
||
vector<string> nestedData_;
|
||
|
||
public:
|
||
Opaque()
|
||
: key_(idi::EntryID<Opaque>())
|
||
{ }
|
||
|
||
explicit
|
||
Opaque (string keyID)
|
||
: key_(idi::EntryID<Opaque>(keyID))
|
||
{ }
|
||
|
||
explicit
|
||
Opaque (idi::BareEntryID id)
|
||
: key_(id)
|
||
{ }
|
||
|
||
Opaque (Opaque const& o)
|
||
: key_(o.key_)
|
||
, type_(o.type_)
|
||
, alpha_(o.alpha_)
|
||
, beta_(o.beta_)
|
||
, gamma_(o.gamma_)
|
||
, delta_()
|
||
, nestedObj_(o.nestedObj_)
|
||
, nestedData_(o.nestedData_)
|
||
{
|
||
if (o.delta_)
|
||
delta_.reset(new Opaque(*o.delta_));
|
||
}
|
||
|
||
Opaque&
|
||
operator= (Opaque const& o)
|
||
{
|
||
if (&o != this)
|
||
{
|
||
Opaque tmp(o);
|
||
swap (*this, tmp);
|
||
}
|
||
return *this;
|
||
}
|
||
|
||
|
||
operator string() const
|
||
{
|
||
return _Fmt{"%s__(α:%d β:%s γ:%7.5f δ:%s\n......|nested:%s\n......|data:%s\n )__END_%s"}
|
||
% identity()
|
||
% alpha_
|
||
% beta_
|
||
% gamma_
|
||
% delta_
|
||
% join (nestedObj_, "\n......|")
|
||
% join (nestedData_)
|
||
% identity()
|
||
;
|
||
}
|
||
|
||
string
|
||
identity() const
|
||
{
|
||
string symbol = key_.getSym() + (isTyped()? "≺"+type_+"≻" : "");
|
||
return lib::idi::format::instance_hex_format(symbol, key_.getHash());
|
||
}
|
||
|
||
bool
|
||
isTyped() const
|
||
{
|
||
return Rec::TYPE_NIL != type_;
|
||
}
|
||
|
||
|
||
void
|
||
buildMutator (TreeMutator::Handle buff)
|
||
{
|
||
buff.create (
|
||
TreeMutator::build()
|
||
.attach (collection(nestedData_)
|
||
.isApplicableIf ([&](GenNode const& spec) -> bool
|
||
{
|
||
return not spec.isNamed(); // »Selector« : accept anything unnamed value-like
|
||
})
|
||
.matchElement ([&](GenNode const& spec, string const& elm) -> bool
|
||
{
|
||
return elm == render(spec.data);
|
||
})
|
||
.constructFrom ([&](GenNode const& spec) -> string
|
||
{
|
||
return render (spec.data);
|
||
})
|
||
.assignElement ([&](string& target, GenNode const& spec) -> bool
|
||
{
|
||
target = render (spec.data);
|
||
return true;
|
||
}))
|
||
.attach (collection(nestedObj_)
|
||
.isApplicableIf ([&](GenNode const& spec) -> bool
|
||
{
|
||
return BOTTOM_INDICATOR != spec.data.recordType(); // »Selector« : require object-like sub scope
|
||
})
|
||
.matchElement ([&](GenNode const& spec, Opaque const& elm) -> bool
|
||
{
|
||
return spec.idi == elm.key_;
|
||
})
|
||
.constructFrom ([&](GenNode const& spec) -> Opaque
|
||
{
|
||
return Opaque{spec.idi};
|
||
})
|
||
.buildChildMutator ([&](Opaque& target, GenNode::ID const& subID, TreeMutator::Handle buff) -> bool
|
||
{
|
||
if (target.key_ != subID) return false; // require match on already existing child object
|
||
target.buildMutator (buff); // delegate to child to build nested TreeMutator
|
||
return true;
|
||
}))
|
||
.change("type", [&](string typeID)
|
||
{
|
||
type_ = typeID;
|
||
})
|
||
.change("α", [&](int val)
|
||
{
|
||
alpha_ = val;
|
||
})
|
||
.change("β", [&](int64_t val)
|
||
{
|
||
beta_ = val;
|
||
})
|
||
.change("γ", [&](double val)
|
||
{
|
||
gamma_ = val;
|
||
})
|
||
.mutateAttrib("δ", [&](TreeMutator::Handle buff)
|
||
{
|
||
if (not delta_) // note: object managed automatically,
|
||
delta_.reset (new Opaque("δ")); // no INS-implementation necessary
|
||
REQUIRE (delta_);
|
||
|
||
delta_->buildMutator(buff);
|
||
}));
|
||
}
|
||
|
||
/** override default size traits
|
||
* to allow for sufficient buffer,
|
||
* able to hold the mutator defined above.
|
||
*/
|
||
friend constexpr size_t
|
||
treeMutatorSize (const Opaque*)
|
||
{
|
||
return 350;
|
||
}
|
||
};
|
||
|
||
}//(End)Test fixture
|
||
|
||
|
||
|
||
|
||
|
||
|
||
|
||
/***********************************************************************//**
|
||
* @test Demonstration: apply a structural change to unspecified private
|
||
* data structures, with the help of an [dynamic adapter](\ref TreeMutator)
|
||
* - we use private data classes, defined here in the test fixture
|
||
* to represent "just some" pre-existing data structure.
|
||
* - we re-assign some attribute values
|
||
* - we add, re-order and delete child "elements", without knowing
|
||
* what these elements actually are and how they are to be handled.
|
||
* - we recurse into mutating such an _"unspecified"_ child element.
|
||
*
|
||
* @note this test uses the same verb sequence as is assumed for the
|
||
* coverage of diff building blocks in TreeMutatorBinding_test
|
||
*
|
||
* @see DiffTreeApplication_test generic variant of tree diff application
|
||
* @see TreeMutatorBinding_test coverage of the "building blocks"
|
||
* @see TreeMutator_test base operations of the adapter
|
||
* @see tree-diff-mutator-binding.hpp
|
||
* @see diff-tree-application.hpp
|
||
* @see tree-diff.hpp
|
||
*/
|
||
class DiffComplexApplication_test
|
||
: public Test
|
||
, TreeDiffLanguage
|
||
{
|
||
using DiffSeq = iter_stl::IterSnapshot<DiffStep>;
|
||
|
||
DiffSeq
|
||
populationDiff()
|
||
{
|
||
return snapshot({ins(ATTRIB1)
|
||
, ins(ATTRIB3)
|
||
, ins(ATTRIB3)
|
||
, ins(CHILD_B)
|
||
, ins(CHILD_B)
|
||
, ins(CHILD_T)
|
||
});
|
||
} // ==> ATTRIB1, ATTRIB3, (ATTRIB3), CHILD_B, CHILD_B, CHILD_T
|
||
|
||
DiffSeq
|
||
reorderingDiff()
|
||
{
|
||
return snapshot({after(Ref::ATTRIBS)
|
||
, ins(ATTRIB2)
|
||
, del(CHILD_B)
|
||
, ins(SUB_NODE)
|
||
, find(CHILD_T)
|
||
, pick(CHILD_B)
|
||
, skip(CHILD_T)
|
||
});
|
||
} // ==> ATTRIB1, ATTRIB3, (ATTRIB3), ATTRIB2, SUB_NODE, CHILD_T, CHILD_B
|
||
|
||
DiffSeq
|
||
mutationDiff()
|
||
{
|
||
return snapshot({after(CHILD_B)
|
||
, after(Ref::END)
|
||
, set(GAMMA_PI)
|
||
, mut(SUB_NODE)
|
||
, ins(TYPE_X)
|
||
, ins(ATTRIB2)
|
||
, ins(CHILD_B)
|
||
, ins(CHILD_A)
|
||
, emu(SUB_NODE)
|
||
, ins(ATTRIB_NODE)
|
||
, mut(ATTRIB_NODE)
|
||
, ins(TYPE_Z)
|
||
, ins(CHILD_A)
|
||
, ins(CHILD_A)
|
||
, ins(CHILD_A)
|
||
, emu(ATTRIB_NODE)
|
||
});
|
||
} // ==> ATTRIB1, ATTRIB3 := π, (ATTRIB3), ATTRIB2,
|
||
// ATTRIB_NODE{ type ζ, CHILD_A, CHILD_A, CHILD_A }
|
||
// SUB_NODE{ type ξ, ATTRIB2, CHILD_B, CHILD_A },
|
||
// CHILD_T, CHILD_B
|
||
|
||
|
||
|
||
|
||
virtual void
|
||
run (Arg)
|
||
{
|
||
Opaque subject;
|
||
// auto target = mutatorBinding (subject);
|
||
// DiffApplicator<DiffMutable> application(target);
|
||
DiffApplicator<Opaque> application(subject);
|
||
//
|
||
// TODO verify results
|
||
cout << "before..."<<endl << subject<<endl;
|
||
|
||
// Part I : apply attribute changes
|
||
application.consume(populationDiff());
|
||
//
|
||
// TODO verify results
|
||
cout << "after...I"<<endl << subject<<endl;
|
||
|
||
// Part II : apply child population
|
||
application.consume(reorderingDiff());
|
||
//
|
||
// TODO verify results
|
||
cout << "after...II"<<endl << subject<<endl;
|
||
|
||
// Part III : apply child mutations
|
||
application.consume(mutationDiff());
|
||
//
|
||
// TODO verify results
|
||
cout << "after...III"<<endl << subject<<endl;
|
||
}
|
||
};
|
||
|
||
|
||
/** Register this test class... */
|
||
LAUNCHER (DiffComplexApplication_test, "unit common");
|
||
|
||
|
||
|
||
}}} // namespace lib::diff::test
|