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experiment with how to represent a fixed inline diff sequence for the test

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...also the first time to get this diff representation draft
through the compiler

TODO: implementation of the actual diff step application functions
This commit is contained in:
Fischlurch 2014-12-10 04:33:53 +01:00
parent 55f49746a1
commit 8d0ce0dd3a
1 changed files with 57 additions and 4 deletions
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61
tests/library/diff-list-application-test.cpp
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@ -24,6 +24,7 @@
#include "lib/test/run.hpp"
#include "lib/verb-token.hpp"
#include "lib/util.hpp"
#include "lib/iter-adapter-stl.hpp"
//#include "lib/format-string.hpp"
//#include <iostream>
@ -57,12 +58,17 @@ namespace test{
};
using DiffVerb = VerbToken<Receiver, void(E)>;
using VerbTok = std::tuple<DiffVerb, E>;
struct DiffStep
: std::tuple<DiffVerb, E>
: VerbTok
{
DiffVerb& verb() { return std::get<0>(*this); }
E const& elm() { return std::get<1>(*this); }
E elm() { return std::get<1>(*this); }
DiffStep(DiffVerb verb, E e)
: VerbTok(verb,e)
{ }
operator string() const
{
@ -77,7 +83,7 @@ namespace test{
};
#define DiffStep_CTOR(_ID_) \
DiffStep _ID_(E e) { return {DiffVerb(&Receiver::_ID_, STRINGIFY(_ID_)), e}; }
static DiffStep _ID_(E e) { return {DiffVerb(&Receiver::_ID_, STRINGIFY(_ID_)), e }; }
DiffStep_CTOR(ins)
DiffStep_CTOR(del)
@ -153,7 +159,31 @@ namespace test{
protected:
};
namespace {
template<typename SEQ>
struct _OnceT
{
typedef typename SEQ::value_type value_type;
typedef iter_stl::IterSnapshot<value_type> iterator;
};
}
template<class CON>
inline typename _OnceT<CON>::iterator
onceEach(CON const& con)
{
using OnceIter = typename _OnceT<CON>::iterator;
return OnceIter(con);
}
template<class VAL>
inline iter_stl::IterSnapshot<VAL>
onceEach(std::initializer_list<VAL> const& ili)
{
using OnceIter = iter_stl::IterSnapshot<VAL>;
return OnceIter(begin(ili), end(ili));
}
namespace {
using DataSeq = vector<string>;
@ -162,6 +192,29 @@ namespace test{
string TOK(a1), TOK(a2), TOK(a3), TOK(a4), TOK(a5);
string TOK(b1), TOK(b2), TOK(b3), TOK(b4);
struct TestDiff
: DiffLanguage<string>
{
using DiffSeq = typename _OnceT<std::initializer_list<DiffStep>>::iterator;
static DiffSeq
generate()
{
return onceEach({del(a1)
, del(a2)
, ins(b1)
, pick(a3)
, push(a5)
, pick(a5)
, ins(b2)
, ins(b3)
, pick(a4)
, ins(b4)
});
}
};
}
@ -188,7 +241,7 @@ namespace test{
run (Arg)
{
DataSeq src({a1,a2,a3,a4,a5});
DiffSeq diff = generate_test_diff();
auto diff = TestDiff::generate();
CHECK (!isnil (diff));
DataSeq target = src;