comparison mercurial/context.py @ 31992:3e47a40d7a7a

context: possibly yield initial fctx in blockdescendants()

If initial 'fctx' has changes in line range with respect to its parents, we
yield it first. This makes 'followlines(..., descend=True)' consistent with
'descendants()' revset which yields the starting revision.

We reuse one iteration of blockancestors() which does exactly what we want.

In test-annotate.t, adjust 'startrev' in one case to cover the situation where
the starting revision does not touch specified line range.

31991:55987fc8aba1

def blockdescendants(fctx, fromline, toline):
    """Yield descendants of `fctx` with respect to the block of lines within
    `fromline`-`toline` range.
    """
    diffopts = patch.diffopts(fctx._repo.ui)
    fl = fctx.filelog()
    seen = {fctx.filerev(): (fctx, (fromline, toline))}
    for i in fl.descendants([fctx.filerev()]):
        c = fctx.filectx(i)

31992:3e47a40d7a7a

def blockdescendants(fctx, fromline, toline):
    """Yield descendants of `fctx` with respect to the block of lines within
    `fromline`-`toline` range.
    """
    # First possibly yield 'fctx' if it has changes in range with respect to
    # its parents.
    try:
        c, linerange1 = next(blockancestors(fctx, fromline, toline))
    except StopIteration:
        pass
    else:
        if c == fctx:
            yield c, linerange1

    diffopts = patch.diffopts(fctx._repo.ui)
    fl = fctx.filelog()
    seen = {fctx.filerev(): (fctx, (fromline, toline))}
    for i in fl.descendants([fctx.filerev()]):
        c = fctx.filectx(i)