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Revision fdb70b16a006f82b65fb92995886a074c829f587 authored by Junio C Hamano on 11 October 2016, 21:21:17 UTC, committed by Junio C Hamano on 11 October 2016, 21:21:17 UTC 
Merge branch 'jc/worktree-config' into maint
 
"git worktree", even though it used the default_abbrev setting that
ought to be affected by core.abbrev configuration variable, ignored
the variable setting.  The command has been taught to read the
default set of configuration variables to correct this.

* jc/worktree-config:
  worktree: honor configuration variables
2 parent s f7f0a87 + d49028e
Raw File
iterator.h 
#ifndef ITERATOR_H
#define ITERATOR_H

/*
 * Generic constants related to iterators.
 */

/*
 * The attempt to advance the iterator was successful; the iterator
 * reflects the new current entry.
 */
#define ITER_OK 0

/*
 * The iterator is exhausted and has been freed.
 */
#define ITER_DONE -1

/*
 * The iterator experienced an error. The iteration has been aborted
 * and the iterator has been freed.
 */
#define ITER_ERROR -2

/*
 * Return values for selector functions for merge iterators. The
 * numerical values of these constants are important and must be
 * compatible with ITER_DONE and ITER_ERROR.
 */
enum iterator_selection {
	/* End the iteration without an error: */
	ITER_SELECT_DONE = ITER_DONE,

	/* Report an error and abort the iteration: */
	ITER_SELECT_ERROR = ITER_ERROR,

	/*
	 * The next group of constants are masks that are useful
	 * mainly internally.
	 */

	/* The LSB selects whether iter0/iter1 is the "current" iterator: */
	ITER_CURRENT_SELECTION_MASK = 0x01,

	/* iter0 is the "current" iterator this round: */
	ITER_CURRENT_SELECTION_0 = 0x00,

	/* iter1 is the "current" iterator this round: */
	ITER_CURRENT_SELECTION_1 = 0x01,

	/* Yield the value from the current iterator? */
	ITER_YIELD_CURRENT = 0x02,

	/* Discard the value from the secondary iterator? */
	ITER_SKIP_SECONDARY = 0x04,

	/*
	 * The constants that a selector function should usually
	 * return.
	 */

	/* Yield the value from iter0: */
	ITER_SELECT_0 = ITER_CURRENT_SELECTION_0 | ITER_YIELD_CURRENT,

	/* Yield the value from iter0 and discard the one from iter1: */
	ITER_SELECT_0_SKIP_1 = ITER_SELECT_0 | ITER_SKIP_SECONDARY,

	/* Discard the value from iter0 without yielding anything this round: */
	ITER_SKIP_0 = ITER_CURRENT_SELECTION_1 | ITER_SKIP_SECONDARY,

	/* Yield the value from iter1: */
	ITER_SELECT_1 = ITER_CURRENT_SELECTION_1 | ITER_YIELD_CURRENT,

	/* Yield the value from iter1 and discard the one from iter0: */
	ITER_SELECT_1_SKIP_0 = ITER_SELECT_1 | ITER_SKIP_SECONDARY,

	/* Discard the value from iter1 without yielding anything this round: */
	ITER_SKIP_1 = ITER_CURRENT_SELECTION_0 | ITER_SKIP_SECONDARY
};

#endif /* ITERATOR_H */
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