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Adopted paren-cond ternary operator style

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So:

  x = (cond) ? yes : no;

Where there are always parentheses around the condition, even if not
required for disambiguity. Additional parentheses are always allowed,
but the parenthesized condition helps signal that a ternary operator is
coming earlier in the expression.

This style has grown on me as I think it helps code readability. It
reminds me of the required parentheses for if/while statements.

Might as well adopt codebase-wide.
This commit is contained in:
Christopher Haster
2024-01-20 21:40:00 -06:00
parent 76715ced4a
commit 6fc040db1a
10 changed files with 286 additions and 282 deletions
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tests/test_dirs.toml
+67 -67
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@@ -1211,7 +1211,7 @@ code = '''
// create a directory here
char name[256];
sprintf(name, "%s/dir%04d", (PARENT ? "pricklypear" : ""), x);
sprintf(name, "%s/dir%04d", ((PARENT) ? "pricklypear" : ""), x);
int err = lfsr_mkdir(&lfs, name);
assert(!err || err == LFS_ERR_EXIST);
}
@@ -1227,7 +1227,7 @@ code = '''
// test that our directories match our simulation
for (lfs_size_t j = 0; j < sim_size; j++) {
char name[256];
sprintf(name, "%s/dir%04d", (PARENT ? "pricklypear" : ""), sim[j]);
sprintf(name, "%s/dir%04d", ((PARENT) ? "pricklypear" : ""), sim[j]);
struct lfs_info info;
lfsr_stat(&lfs, name, &info) => 0;
char name2[256];
@@ -1238,7 +1238,7 @@ code = '''
}
lfsr_dir_t dir;
lfsr_dir_open(&lfs, &dir, (PARENT ? "pricklypear" : "/")) => 0;
lfsr_dir_open(&lfs, &dir, ((PARENT) ? "pricklypear" : "/")) => 0;
struct lfs_info info;
lfsr_dir_read(&lfs, &dir, &info) => 0;
assert(strcmp(info.name, ".") == 0);
@@ -3897,7 +3897,7 @@ code = '''
// create a directory here
char name[256];
sprintf(name, "%s/dir%04d", (PARENT ? "pricklypear" : ""), x);
sprintf(name, "%s/dir%04d", ((PARENT) ? "pricklypear" : ""), x);
int err = lfsr_mkdir(&lfs, name);
assert(!err || err == LFS_ERR_EXIST);
@@ -3912,7 +3912,7 @@ code = '''
// remove this directory
char name[256];
sprintf(name, "%s/dir%04d", (PARENT ? "pricklypear" : ""), x);
sprintf(name, "%s/dir%04d", ((PARENT) ? "pricklypear" : ""), x);
lfsr_remove(&lfs, name) => 0;
}
}
@@ -3928,7 +3928,7 @@ code = '''
// test that our directories match our simulation
for (lfs_size_t j = 0; j < sim_size; j++) {
char name[256];
sprintf(name, "%s/dir%04d", (PARENT ? "pricklypear" : ""), sim[j]);
sprintf(name, "%s/dir%04d", ((PARENT) ? "pricklypear" : ""), sim[j]);
struct lfs_info info;
lfsr_stat(&lfs, name, &info) => 0;
char name2[256];
@@ -3939,7 +3939,7 @@ code = '''
}
lfsr_dir_t dir;
lfsr_dir_open(&lfs, &dir, (PARENT ? "pricklypear" : "/")) => 0;
lfsr_dir_open(&lfs, &dir, ((PARENT) ? "pricklypear" : "/")) => 0;
struct lfs_info info;
lfsr_dir_read(&lfs, &dir, &info) => 0;
assert(strcmp(info.name, ".") == 0);
@@ -5393,7 +5393,7 @@ code = '''
// check if we have already started renaming, in case of powerloss
struct lfs_info info;
err = lfsr_stat(&lfs, (BEFORE ? "/0mved0000" : "/mved0000"), &info);
err = lfsr_stat(&lfs, ((BEFORE) ? "/0mved0000" : "/mved0000"), &info);
if (err == LFS_ERR_NOENT) {
// make this many directories
for (lfs_size_t i = 0; i < N; i++) {
@@ -5450,7 +5450,7 @@ code = '''
char old_name[256];
sprintf(old_name, "dir%04d", i);
char new_name[256];
sprintf(new_name, "%smved%04d", (BEFORE ? "0" : ""), i);
sprintf(new_name, "%smved%04d", ((BEFORE) ? "0" : ""), i);
int err = lfsr_rename(&lfs, old_name, new_name);
assert(!err || (TEST_PLS && err == LFS_ERR_NOENT));
@@ -5466,7 +5466,7 @@ code = '''
// check that our renames worked
for (lfs_size_t i = 0; i < N; i++) {
char name[256];
sprintf(name, "%smved%04d", (BEFORE ? "0" : ""), i);
sprintf(name, "%smved%04d", ((BEFORE) ? "0" : ""), i);
struct lfs_info info;
lfsr_stat(&lfs, name, &info) => 0;
assert(strcmp(info.name, name) == 0);
@@ -5486,7 +5486,7 @@ code = '''
assert(info.size == 0);
for (lfs_size_t i = 0; i < N; i++) {
char name[256];
sprintf(name, "%smved%04d", (BEFORE ? "0" : ""), i);
sprintf(name, "%smved%04d", ((BEFORE) ? "0" : ""), i);
lfsr_dir_read(&lfs, &dir, &info) => 0;
assert(strcmp(info.name, name) == 0);
assert(info.type == LFS_TYPE_DIR);
@@ -5516,7 +5516,7 @@ code = '''
// check if we have already started renaming, in case of powerloss
struct lfs_info info;
err = lfsr_stat(&lfs, (BEFORE ? "/0mved0000" : "/mved0000"), &info);
err = lfsr_stat(&lfs, ((BEFORE) ? "/0mved0000" : "/mved0000"), &info);
if (err == LFS_ERR_NOENT) {
// make this many directories
for (lfs_size_t i = 0; i < N; i++) {
@@ -5573,7 +5573,7 @@ code = '''
char old_name[256];
sprintf(old_name, "dir%04d", i);
char new_name[256];
sprintf(new_name, "%smved%04d", (BEFORE ? "0" : ""), i);
sprintf(new_name, "%smved%04d", ((BEFORE) ? "0" : ""), i);
int err = lfsr_rename(&lfs, old_name, new_name);
assert(!err || (TEST_PLS && err == LFS_ERR_NOENT));
@@ -5589,7 +5589,7 @@ code = '''
// check that our renames worked
for (lfs_size_t i = 0; i < N; i++) {
char name[256];
sprintf(name, "%smved%04d", (BEFORE ? "0" : ""), i);
sprintf(name, "%smved%04d", ((BEFORE) ? "0" : ""), i);
struct lfs_info info;
lfsr_stat(&lfs, name, &info) => 0;
assert(strcmp(info.name, name) == 0);
@@ -5609,7 +5609,7 @@ code = '''
assert(info.size == 0);
for (lfs_size_t i = 0; i < N; i++) {
char name[256];
sprintf(name, "%smved%04d", (BEFORE ? "0" : ""), i);
sprintf(name, "%smved%04d", ((BEFORE) ? "0" : ""), i);
lfsr_dir_read(&lfs, &dir, &info) => 0;
assert(strcmp(info.name, name) == 0);
assert(info.type == LFS_TYPE_DIR);
@@ -5639,7 +5639,7 @@ code = '''
// check if we have already started renaming, in case of powerloss
struct lfs_info info;
err = lfsr_stat(&lfs, (BEFORE ? "/0mved0000" : "/mved0000"), &info);
err = lfsr_stat(&lfs, ((BEFORE) ? "/0mved0000" : "/mved0000"), &info);
if (err == LFS_ERR_NOENT) {
// make this many directories
for (lfs_size_t i = 0; i < N; i++) {
@@ -5738,7 +5738,7 @@ code = '''
char old_name[256];
sprintf(old_name, "dir%04d", i);
char new_name[256];
sprintf(new_name, "%smved%04d", (BEFORE ? "0" : ""), i);
sprintf(new_name, "%smved%04d", ((BEFORE) ? "0" : ""), i);
int err = lfsr_rename(&lfs, old_name, new_name);
assert(!err || (TEST_PLS && err == LFS_ERR_NOENT));
@@ -5753,11 +5753,11 @@ code = '''
for (lfs_size_t j = 0; j < N; j++) {
char old_name[256];
sprintf(old_name, "%smved%04d/child%04d",
(BEFORE ? "0" : ""), i, j);
((BEFORE) ? "0" : ""), i, j);
char new_name[256];
sprintf(new_name, "%smved%04d/%schmved%04d",
(BEFORE ? "0" : ""), i,
(BEFORE ? "0" : ""), j);
((BEFORE) ? "0" : ""), i,
((BEFORE) ? "0" : ""), j);
int err = lfsr_rename(&lfs, old_name, new_name);
assert(!err || (TEST_PLS && err == LFS_ERR_NOENT));
@@ -5774,7 +5774,7 @@ code = '''
// check that our renames worked
for (lfs_size_t i = 0; i < N; i++) {
char name[256];
sprintf(name, "%smved%04d", (BEFORE ? "0" : ""), i);
sprintf(name, "%smved%04d", ((BEFORE) ? "0" : ""), i);
struct lfs_info info;
lfsr_stat(&lfs, name, &info) => 0;
assert(strcmp(info.name, name) == 0);
@@ -5784,10 +5784,10 @@ code = '''
for (lfs_size_t j = 0; j < N; j++) {
char name[256];
sprintf(name, "%smved%04d/%schmved%04d",
(BEFORE ? "0" : ""), i, (BEFORE ? "0" : ""), j);
((BEFORE) ? "0" : ""), i, ((BEFORE) ? "0" : ""), j);
struct lfs_info info;
lfsr_stat(&lfs, name, &info) => 0;
sprintf(name, "%schmved%04d", (BEFORE ? "0" : ""), j);
sprintf(name, "%schmved%04d", ((BEFORE) ? "0" : ""), j);
assert(strcmp(info.name, name) == 0);
assert(info.type == LFS_TYPE_DIR);
assert(info.size == 0);
@@ -5806,7 +5806,7 @@ code = '''
assert(info.size == 0);
for (lfs_size_t i = 0; i < N; i++) {
char name[256];
sprintf(name, "%smved%04d", (BEFORE ? "0" : ""), i);
sprintf(name, "%smved%04d", ((BEFORE) ? "0" : ""), i);
lfsr_dir_read(&lfs, &dir, &info) => 0;
assert(strcmp(info.name, name) == 0);
assert(info.type == LFS_TYPE_DIR);
@@ -5817,7 +5817,7 @@ code = '''
for (lfs_size_t i = 0; i < N; i++) {
char name[256];
sprintf(name, "%smved%04d", (BEFORE ? "0" : ""), i);
sprintf(name, "%smved%04d", ((BEFORE) ? "0" : ""), i);
lfsr_dir_open(&lfs, &dir, name) => 0;
lfsr_dir_read(&lfs, &dir, &info) => 0;
assert(strcmp(info.name, ".") == 0);
@@ -5829,7 +5829,7 @@ code = '''
assert(info.size == 0);
for (lfs_size_t j = 0; j < N; j++) {
char name[256];
sprintf(name, "%schmved%04d", (BEFORE ? "0" : ""), j);
sprintf(name, "%schmved%04d", ((BEFORE) ? "0" : ""), j);
lfsr_dir_read(&lfs, &dir, &info) => 0;
assert(strcmp(info.name, name) == 0);
assert(info.type == LFS_TYPE_DIR);
@@ -5860,7 +5860,7 @@ code = '''
// check if we have already started renaming, in case of powerloss
struct lfs_info info;
err = lfsr_stat(&lfs, (BEFORE ? "/0mved0000" : "/mved0000"), &info);
err = lfsr_stat(&lfs, ((BEFORE) ? "/0mved0000" : "/mved0000"), &info);
if (err == LFS_ERR_NOENT) {
// make this many directories
for (lfs_size_t i = 0; i < N; i++) {
@@ -6001,7 +6001,7 @@ code = '''
char old_name[256];
sprintf(old_name, "dir%04d", i);
char new_name[256];
sprintf(new_name, "%smved%04d", (BEFORE ? "0" : ""), i);
sprintf(new_name, "%smved%04d", ((BEFORE) ? "0" : ""), i);
int err = lfsr_rename(&lfs, old_name, new_name);
assert(!err || (TEST_PLS && err == LFS_ERR_NOENT));
@@ -6016,11 +6016,11 @@ code = '''
for (lfs_size_t j = 0; j < N; j++) {
char old_name[256];
sprintf(old_name, "%smved%04d/child%04d",
(BEFORE ? "0" : ""), i, j);
((BEFORE) ? "0" : ""), i, j);
char new_name[256];
sprintf(new_name, "%smved%04d/%schmved%04d",
(BEFORE ? "0" : ""), i,
(BEFORE ? "0" : ""), j);
((BEFORE) ? "0" : ""), i,
((BEFORE) ? "0" : ""), j);
int err = lfsr_rename(&lfs, old_name, new_name);
assert(!err || (TEST_PLS && err == LFS_ERR_NOENT));
@@ -6035,13 +6035,13 @@ code = '''
for (lfs_size_t k = 0; k < N; k++) {
char old_name[256];
sprintf(old_name, "%smved%04d/%schmved%04d/grandchild%04d",
(BEFORE ? "0" : ""), i,
(BEFORE ? "0" : ""), j, k);
((BEFORE) ? "0" : ""), i,
((BEFORE) ? "0" : ""), j, k);
char new_name[256];
sprintf(new_name, "%smved%04d/%schmved%04d/%sgrmved%04d",
(BEFORE ? "0" : ""), i,
(BEFORE ? "0" : ""), j,
(BEFORE ? "0" : ""), k);
((BEFORE) ? "0" : ""), i,
((BEFORE) ? "0" : ""), j,
((BEFORE) ? "0" : ""), k);
int err = lfsr_rename(&lfs, old_name, new_name);
assert(!err || (TEST_PLS && err == LFS_ERR_NOENT));
@@ -6059,7 +6059,7 @@ code = '''
// check that our removes worked
for (lfs_size_t i = 0; i < N; i++) {
char name[256];
sprintf(name, "%smved%04d", (BEFORE ? "0" : ""), i);
sprintf(name, "%smved%04d", ((BEFORE) ? "0" : ""), i);
struct lfs_info info;
lfsr_stat(&lfs, name, &info) => 0;
assert(strcmp(info.name, name) == 0);
@@ -6069,11 +6069,11 @@ code = '''
for (lfs_size_t j = 0; j < N; j++) {
char name[256];
sprintf(name, "%smved%04d/%schmved%04d",
(BEFORE ? "0" : ""), i,
(BEFORE ? "0" : ""), j);
((BEFORE) ? "0" : ""), i,
((BEFORE) ? "0" : ""), j);
struct lfs_info info;
lfsr_stat(&lfs, name, &info) => 0;
sprintf(name, "%schmved%04d", (BEFORE ? "0" : ""), j);
sprintf(name, "%schmved%04d", ((BEFORE) ? "0" : ""), j);
assert(strcmp(info.name, name) == 0);
assert(info.type == LFS_TYPE_DIR);
assert(info.size == 0);
@@ -6081,12 +6081,12 @@ code = '''
for (lfs_size_t k = 0; k < N; k++) {
char name[256];
sprintf(name, "%smved%04d/%schmved%04d/%sgrmved%04d",
(BEFORE ? "0" : ""), i,
(BEFORE ? "0" : ""), j,
(BEFORE ? "0" : ""), k);
((BEFORE) ? "0" : ""), i,
((BEFORE) ? "0" : ""), j,
((BEFORE) ? "0" : ""), k);
struct lfs_info info;
lfsr_stat(&lfs, name, &info) => 0;
sprintf(name, "%sgrmved%04d", (BEFORE ? "0" : ""), k);
sprintf(name, "%sgrmved%04d", ((BEFORE) ? "0" : ""), k);
assert(strcmp(info.name, name) == 0);
assert(info.type == LFS_TYPE_DIR);
assert(info.size == 0);
@@ -6106,7 +6106,7 @@ code = '''
assert(info.size == 0);
for (lfs_size_t i = 0; i < N; i++) {
char name[256];
sprintf(name, "%smved%04d", (BEFORE ? "0" : ""), i);
sprintf(name, "%smved%04d", ((BEFORE) ? "0" : ""), i);
lfsr_dir_read(&lfs, &dir, &info) => 0;
assert(strcmp(info.name, name) == 0);
assert(info.type == LFS_TYPE_DIR);
@@ -6117,7 +6117,7 @@ code = '''
for (lfs_size_t i = 0; i < N; i++) {
char name[256];
sprintf(name, "%smved%04d", (BEFORE ? "0" : ""), i);
sprintf(name, "%smved%04d", ((BEFORE) ? "0" : ""), i);
lfsr_dir_open(&lfs, &dir, name) => 0;
lfsr_dir_read(&lfs, &dir, &info) => 0;
assert(strcmp(info.name, ".") == 0);
@@ -6129,7 +6129,7 @@ code = '''
assert(info.size == 0);
for (lfs_size_t j = 0; j < N; j++) {
char name[256];
sprintf(name, "%schmved%04d", (BEFORE ? "0" : ""), j);
sprintf(name, "%schmved%04d", ((BEFORE) ? "0" : ""), j);
lfsr_dir_read(&lfs, &dir, &info) => 0;
assert(strcmp(info.name, name) == 0);
assert(info.type == LFS_TYPE_DIR);
@@ -6141,8 +6141,8 @@ code = '''
for (lfs_size_t j = 0; j < N; j++) {
char name[256];
sprintf(name, "%smved%04d/%schmved%04d",
(BEFORE ? "0" : ""), i,
(BEFORE ? "0" : ""), j);
((BEFORE) ? "0" : ""), i,
((BEFORE) ? "0" : ""), j);
lfsr_dir_open(&lfs, &dir, name) => 0;
lfsr_dir_read(&lfs, &dir, &info) => 0;
assert(strcmp(info.name, ".") == 0);
@@ -6154,7 +6154,7 @@ code = '''
assert(info.size == 0);
for (lfs_size_t k = 0; k < N; k++) {
char name[256];
sprintf(name, "%sgrmved%04d", (BEFORE ? "0" : ""), k);
sprintf(name, "%sgrmved%04d", ((BEFORE) ? "0" : ""), k);
lfsr_dir_read(&lfs, &dir, &info) => 0;
assert(strcmp(info.name, name) == 0);
assert(info.type == LFS_TYPE_DIR);
@@ -6186,7 +6186,7 @@ code = '''
// check if we have already started renaming, in case of powerloss
struct lfs_info info;
err = lfsr_stat(&lfs, (BEFORE ? "/0mved0000" : "/mved0000"), &info);
err = lfsr_stat(&lfs, ((BEFORE) ? "/0mved0000" : "/mved0000"), &info);
if (err == LFS_ERR_NOENT) {
// create this many directory in a sort of linked-list by nesting
char name[4096];
@@ -6253,7 +6253,7 @@ code = '''
for (lfs_size_t i = 0; i < N; i++) {
sprintf(&old_name[strlen(old_name)], "/dir%04d", i);
sprintf(&new_name[strlen(new_name)], "/%smved%04d",
(BEFORE ? "0" : ""), i);
((BEFORE) ? "0" : ""), i);
err = lfsr_rename(&lfs, old_name, new_name);
assert(!err || (TEST_PLS && err == LFS_ERR_NOENT));
@@ -6273,11 +6273,11 @@ code = '''
char name[4096];
memset(name, 0, sizeof(name));
for (lfs_size_t i = 0; i < N; i++) {
sprintf(&name[strlen(name)], "/%smved%04d", (BEFORE ? "0" : ""), i);
sprintf(&name[strlen(name)], "/%smved%04d", ((BEFORE) ? "0" : ""), i);
struct lfs_info info;
lfsr_stat(&lfs, name, &info) => 0;
char name2[256];
sprintf(name2, "%smved%04d", (BEFORE ? "0" : ""), i);
sprintf(name2, "%smved%04d", ((BEFORE) ? "0" : ""), i);
assert(strcmp(info.name, name2) == 0);
assert(info.type == LFS_TYPE_DIR);
assert(info.size == 0);
@@ -6285,7 +6285,7 @@ code = '''
memset(name, 0, sizeof(name));
for (lfs_size_t i = 0; i < N; i++) {
sprintf(&name[strlen(name)], "/%smved%04d", (BEFORE ? "0" : ""), i);
sprintf(&name[strlen(name)], "/%smved%04d", ((BEFORE) ? "0" : ""), i);
lfsr_dir_t dir;
lfsr_dir_open(&lfs, &dir, name) => 0;
struct lfs_info info;
@@ -6299,7 +6299,7 @@ code = '''
assert(info.size == 0);
if (i < N-1) {
char name2[256];
sprintf(name2, "%smved%04d", (BEFORE ? "0" : ""), i+1);
sprintf(name2, "%smved%04d", ((BEFORE) ? "0" : ""), i+1);
lfsr_dir_read(&lfs, &dir, &info) => 0;
assert(strcmp(info.name, name2) == 0);
assert(info.type == LFS_TYPE_DIR);
@@ -6365,7 +6365,7 @@ code = '''
// create a directory here
char name[256];
sprintf(name, "%s/dir%04d", (PARENT ? "pricklypear" : ""), x);
sprintf(name, "%s/dir%04d", ((PARENT) ? "pricklypear" : ""), x);
int err = lfsr_mkdir(&lfs, name);
assert(!err || err == LFS_ERR_EXIST);
@@ -6401,9 +6401,9 @@ code = '''
// rename this directory
char old_name[256];
sprintf(old_name, "%s/dir%04d", (PARENT ? "pricklypear" : ""), x);
sprintf(old_name, "%s/dir%04d", ((PARENT) ? "pricklypear" : ""), x);
char new_name[256];
sprintf(new_name, "%s/dir%04d", (PARENT ? "pricklypear" : ""), y);
sprintf(new_name, "%s/dir%04d", ((PARENT) ? "pricklypear" : ""), y);
lfsr_rename(&lfs, old_name, new_name) => 0;
}
}
@@ -6419,7 +6419,7 @@ code = '''
// test that our directories match our simulation
for (lfs_size_t j = 0; j < sim_size; j++) {
char name[256];
sprintf(name, "%s/dir%04d", (PARENT ? "pricklypear" : ""), sim[j]);
sprintf(name, "%s/dir%04d", ((PARENT) ? "pricklypear" : ""), sim[j]);
struct lfs_info info;
lfsr_stat(&lfs, name, &info) => 0;
char name2[256];
@@ -6430,7 +6430,7 @@ code = '''
}
lfsr_dir_t dir;
lfsr_dir_open(&lfs, &dir, (PARENT ? "pricklypear" : "/")) => 0;
lfsr_dir_open(&lfs, &dir, ((PARENT) ? "pricklypear" : "/")) => 0;
struct lfs_info info;
lfsr_dir_read(&lfs, &dir, &info) => 0;
assert(strcmp(info.name, ".") == 0);
@@ -6510,7 +6510,7 @@ code = '''
// create a directory here
char name[256];
sprintf(name, "%s/dir%04d", (PARENT ? "pricklypear" : ""), x);
sprintf(name, "%s/dir%04d", ((PARENT) ? "pricklypear" : ""), x);
int err = lfsr_mkdir(&lfs, name);
assert(!err || err == LFS_ERR_EXIST);
@@ -6525,7 +6525,7 @@ code = '''
// remove this directory
char name[256];
sprintf(name, "%s/dir%04d", (PARENT ? "pricklypear" : ""), x);
sprintf(name, "%s/dir%04d", ((PARENT) ? "pricklypear" : ""), x);
lfsr_remove(&lfs, name) => 0;
} else {
@@ -6560,9 +6560,9 @@ code = '''
// rename this directory
char old_name[256];
sprintf(old_name, "%s/dir%04d", (PARENT ? "pricklypear" : ""), x);
sprintf(old_name, "%s/dir%04d", ((PARENT) ? "pricklypear" : ""), x);
char new_name[256];
sprintf(new_name, "%s/dir%04d", (PARENT ? "pricklypear" : ""), y);
sprintf(new_name, "%s/dir%04d", ((PARENT) ? "pricklypear" : ""), y);
lfsr_rename(&lfs, old_name, new_name) => 0;
}
}
@@ -6578,7 +6578,7 @@ code = '''
// test that our directories match our simulation
for (lfs_size_t j = 0; j < sim_size; j++) {
char name[256];
sprintf(name, "%s/dir%04d", (PARENT ? "pricklypear" : ""), sim[j]);
sprintf(name, "%s/dir%04d", ((PARENT) ? "pricklypear" : ""), sim[j]);
struct lfs_info info;
lfsr_stat(&lfs, name, &info) => 0;
char name2[256];
@@ -6589,7 +6589,7 @@ code = '''
}
lfsr_dir_t dir;
lfsr_dir_open(&lfs, &dir, (PARENT ? "pricklypear" : "/")) => 0;
lfsr_dir_open(&lfs, &dir, ((PARENT) ? "pricklypear" : "/")) => 0;
struct lfs_info info;
lfsr_dir_read(&lfs, &dir, &info) => 0;
assert(strcmp(info.name, ".") == 0);