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No more magic booleans. The word of Andre is spreading.

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git-svn-id: svn://svn.lyx.org/lyx/lyx-devel/trunk@32926 a592a061-630c-0410-9148-cb99ea01b6c8
This commit is contained in:
Vincent van Ravesteijn 2010-01-09 22:58:20 +00:00
parent 33e123a5cd
commit 28b0075b11
1 changed files with 15 additions and 8 deletions
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23
src/Compare.cpp
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@ -27,6 +27,13 @@ using namespace lyx::support;
namespace lyx { namespace lyx {
enum Direction {
Forward = 0,
Backward
};
void step_forward(DocIterator & dit) void step_forward(DocIterator & dit)
{ {
dit.top().forwardPos(); dit.top().forwardPos();
@ -386,19 +393,19 @@ bool equal(DocIterator & o, DocIterator & n) {
} }
bool traverse_snake(DocPair & p, DocRangePair const & rp, bool forward) bool traverse_snake(DocPair & p, DocRangePair const & rp, Direction direction)
{ {
bool ret = false; bool ret = false;
DocPair const & p_end = forward ? rp.to() : rp.from(); DocPair const & p_end = direction == Forward ? rp.to() : rp.from();
while (p != p_end) { while (p != p_end) {
if (!forward) if (direction == Backward)
--p; --p;
if (!equal(p.o, p.n)) { if (!equal(p.o, p.n)) {
if (!forward) if (direction == Backward)
++p; ++p;
return ret; return ret;
} }
if (forward) if (direction == Forward)
++p; ++p;
ret = true; ret = true;
} }
@ -439,7 +446,7 @@ bool Compare::Impl::diff(Buffer const * new_buf, Buffer const * old_buf,
DocRangePair rp(old_buf_, new_buf_); DocRangePair rp(old_buf_, new_buf_);
DocPair from = rp.from(); DocPair from = rp.from();
traverse_snake(from, rp, true); traverse_snake(from, rp, Forward);
DocRangePair const snake(rp.from(), from); DocRangePair const snake(rp.from(), from);
process_snake(snake); process_snake(snake);
@ -484,11 +491,11 @@ void Compare::Impl::diff_i(DocRangePair const & rp)
} else { } else {
// Retrieve the complete snake // Retrieve the complete snake
DocPair first_part_end = middle_snake; DocPair first_part_end = middle_snake;
traverse_snake(first_part_end, rp, false); traverse_snake(first_part_end, rp, Backward);
DocRangePair first_part(rp.from(), first_part_end); DocRangePair first_part(rp.from(), first_part_end);
DocPair second_part_begin = middle_snake; DocPair second_part_begin = middle_snake;
traverse_snake(second_part_begin, rp, true); traverse_snake(second_part_begin, rp, Forward);
DocRangePair second_part(second_part_begin, rp.to()); DocRangePair second_part(second_part_begin, rp.to());
// Split the string in three parts: // Split the string in three parts: