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draft better interface für diff detector

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...better let it "watch" a sequence and compare it
to an internal snapshot, with the ability to update
to a new snapshot at current state
This commit is contained in:
Fischlurch 2015-01-01 23:29:31 +01:00
parent beb57cde22
commit f6d79b764c
1 changed files with 29 additions and 19 deletions
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48
tests/library/diff-list-generation-test.cpp
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@ -33,6 +33,8 @@ using lib::append_all;
using util::isnil;
using std::string;
using std::vector;
using std::move;
using std::swap;
namespace lib {
@ -46,18 +48,22 @@ namespace diff{
using Idx = IndexTable<Val>;
Idx refIdx_;
SEQ const& currentData_;
public:
explicit
DiffDetector(SEQ& refSeq)
DiffDetector(SEQ const& refSeq)
: refIdx_(refSeq)
, currentData_(refSeq)
{ }
Diff
mutateTo (SEQ&& newSeq)
pullUpdate()
{
Idx newIdx(newSeq);
Idx newIdx (currentData_);
Diff changes (move(refIdx_), newIdx);
swap (newIdx, refIdx_);
return changes;
}
};
@ -110,27 +116,31 @@ namespace test{
virtual void
run (Arg)
{
DataSeq original({a1,a2,a3,a4,a5});
DataSeq changed({b1,a3,a5,b2,b3,a4,b4});
DataSeq toObserve({a1,a2,a3,a4,a5});
DiffDetector<DataSeq> detector(toObserve);
DiffDetector<DataSeq> detector(original);
auto changes = detector.mutateTo(changed);
CHECK (!detector.isChanged());
toObserve = {b1,a3,a5,b2,b3,a4,b4};
CHECK (detector.isChanged());
auto changes = detector.pullUpdate();
CHECK (!isnil (changes));
CHECK (!detector.isChanged());
DiffSeq generatedDiff;
append_all (changes, generatedDiff);
CHECK (changes == DiffSeq({del(a1)
, del(a2)
, ins(b1)
, pick(a3)
, push(a5)
, pick(a5)
, ins(b2)
, ins(b3)
, pick(a4)
, ins(b4)
}));
CHECK (generatedDiff == DiffSeq({del(a1)
, del(a2)
, ins(b1)
, pick(a3)
, push(a5)
, pick(a5)
, ins(b2)
, ins(b3)
, pick(a4)
, ins(b4)
}));
}
};