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Use #defines for CIGAR operators in C code

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Give the CIGAR constants names to clarify the code. So that ksw2.h
remains self-contained, define KSW_* versions of the CIGAR operators
it needs for use within ksw2.h. Other code should in general use the
full set of MM_CIGAR_* constants in minimap.h.
This commit is contained in:
John Marshall
2021-07-02 13:03:03 -04:00
committed by Heng Li
parent 177eef259d
commit 260a68d232
4 changed files with 63 additions and 46 deletions
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ksw2.h
+13 -6
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@@ -16,6 +16,13 @@
#define KSW_EZ_SPLICE_REV 0x200
#define KSW_EZ_SPLICE_FLANK 0x400
// The subset of CIGAR operators used by ksw code.
// Use MM_CIGAR_* from minimap.h if you need the full list.
#define KSW_CIGAR_MATCH 0
#define KSW_CIGAR_INS 1
#define KSW_CIGAR_DEL 2
#define KSW_CIGAR_N_SKIP 3
#ifdef __cplusplus
extern "C" {
#endif
@@ -137,13 +144,13 @@ static inline void ksw_backtrack(void *km, int is_rot, int is_rev, int min_intro
else if (!(tmp >> (state + 2) & 1)) state = 0; // if requesting other states, _state_ stays the same if it is a continuation; otherwise, set to H
if (state == 0) state = tmp & 7; // TODO: probably this line can be merged into the "else if" line right above; not 100% sure
if (force_state >= 0) state = force_state;
if (state == 0) cigar = ksw_push_cigar(km, &n_cigar, &m_cigar, cigar, 0, 1), --i, --j; // match
else if (state == 1 || (state == 3 && min_intron_len <= 0)) cigar = ksw_push_cigar(km, &n_cigar, &m_cigar, cigar, 2, 1), --i; // deletion
else if (state == 3 && min_intron_len > 0) cigar = ksw_push_cigar(km, &n_cigar, &m_cigar, cigar, 3, 1), --i; // intron
else cigar = ksw_push_cigar(km, &n_cigar, &m_cigar, cigar, 1, 1), --j; // insertion
if (state == 0) cigar = ksw_push_cigar(km, &n_cigar, &m_cigar, cigar, KSW_CIGAR_MATCH, 1), --i, --j;
else if (state == 1 || (state == 3 && min_intron_len <= 0)) cigar = ksw_push_cigar(km, &n_cigar, &m_cigar, cigar, KSW_CIGAR_DEL, 1), --i;
else if (state == 3 && min_intron_len > 0) cigar = ksw_push_cigar(km, &n_cigar, &m_cigar, cigar, KSW_CIGAR_N_SKIP, 1), --i;
else cigar = ksw_push_cigar(km, &n_cigar, &m_cigar, cigar, KSW_CIGAR_INS, 1), --j;
}
if (i >= 0) cigar = ksw_push_cigar(km, &n_cigar, &m_cigar, cigar, min_intron_len > 0 && i >= min_intron_len? 3 : 2, i + 1); // first deletion
if (j >= 0) cigar = ksw_push_cigar(km, &n_cigar, &m_cigar, cigar, 1, j + 1); // first insertion
if (i >= 0) cigar = ksw_push_cigar(km, &n_cigar, &m_cigar, cigar, min_intron_len > 0 && i >= min_intron_len? KSW_CIGAR_N_SKIP : KSW_CIGAR_DEL, i + 1); // first deletion
if (j >= 0) cigar = ksw_push_cigar(km, &n_cigar, &m_cigar, cigar, KSW_CIGAR_INS, j + 1); // first insertion
if (!is_rev)
for (i = 0; i < n_cigar>>1; ++i) // reverse CIGAR
tmp = cigar[i], cigar[i] = cigar[n_cigar-1-i], cigar[n_cigar-1-i] = tmp;