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Attempting to use the existing FORK_OPT opcode resulted in difficulty
knowing when to pop an error message off the stack and when not to. This
commit makes DESTRUCTURE_ALT a real opcode that is identical to
FORK_OPT, except for never pushing the error message onto the stack when
continuing from an error backtrack.
Some small changes were necessary to the DUP/POP behavior surrounding
destructuring to accomodate this.
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This reverts commit e24af3c78e78a3aab05a2800d825d56f1d842b1b.
While the semantics are desirable, there is no way to implement them
efficiently. The reason is that in order to handle backtracking (empty)
from the state update expression, we have to retain a reference to the
reduction state value in order to restore it upon backtracking.
Retaining a reference to the reduction state kills performance by
causing lots of additional memory allocations and garbage because the
input to the update expression will always have at least two references,
thus no changes to it can be done in-place, and all changes end up being
CoW changes.
Avoiding this is the very reason for the LOADVN instruction (leaving
`null` in the variable loaded from).
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This has been a complicated issue to fix for a number of reasons.
The core of it is that the behavior is different between different
versions of macOS, some of which set possible-but-incorrect values.
This commit addresses the issue by always using our computation for
tm_wday and tm_yday on macOS. As a side-effect, strptime format
strings that specify %u and %j will no longer work on macOS.
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Dates in 1900 are before the Unix epoch. We shouldn't make any promises
about how well they are supported, especially given that our time
support is a thin wrapper over the libc functions.
This changes the test to use dates after the epoch, which should fit
within both a signed and an unsigned 32-bit time_t.
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strptime() on OS X and *BSDs (reputedly) does not set tm_wday and
tm_yday unless corresponding %U and %j format specifiers were used.
That can be... surprising when one parsed year, month, and day anyways.
Glibc's strptime() conveniently sets tm_wday and tm_yday in those cases,
but OS X's does not, ignoring them completely.
This commit makes jq compute those where possible, though the day of
week computation may be wrong for dates before 1900-03-01 or after
2099-12-31.
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A noop body, while useless, should still compile successfully
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The conditional expression in if-then-elif-else-end cannot contribute to
path expressions because it doesn't change the input to any of the then/
elif/else expressions. These must be generated via gen_subexp().
See also #1366.
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It needs to be possible to do something like
getpath($paths[]) += 1
meaning: increment all the paths in . that are listed in $paths[].
In order to do this getpath() needs to update the jq->path and
jq->value_at_path as necessary.
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Rather than testing that a constant expression produces so many
instructions, test that a variety of of such expressions produce the
same number of instructions. This will make future changes in the
compiler less likely to break this test.
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The expression in a variable binding is not and must not be seen as
being part of a path expression in which the variable binding appears.
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first(g) was extracting two values, which, if g is slow, made first(g)
slow. And if the second extraction were to throw an error, then
first(g) would throw that error, which is clearly not the right thing to
do. Besides that, first(g) was allocating garbage, which it no longer
does.
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Read additional bytes from the file to complete the UTF-8 sequence so the bytes
in it don't get converted to U+FFFD replacement characters.
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One can now run:
make TRACE_TESTS=1 check
to get detailed output
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Use %%FAIL IGNORE MSG for error messages that differ on Windows, and
move the sort_by/group_by tests that fail qhen qsort() is not stable.
Now only tests/sorttest and tests/shtest are disabled on Windows.
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Allow a continuation on a comment immediately after a shebang to make
this traditional hack possible:
#!/bin/sh
# this next line is ignored by jq \
exec jq -f "$0" "$@"
# jq code follows
But continue only on the first line following a shebang, and only if
it's a comment.
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./jq --run-tests < tests/onig.test
has been run successfully:
...
Testing 'gsub("a";"b")' at line number 70
Testing 'gsub( "(.*)"; ""; "x")' at line number 74
...
22 of 22 tests passed (0 malformed)
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mktemp(1) isn't posix specified, but it's reasonable to use
mktemp(3) to implement it which requires 6 trailing X's in
the format
Thanks @sthen
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[Builtin name changed, and it only works on string inputs. -Nico]
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