Commit graph

207 commits

Author SHA1 Message Date
Eelco Dolstra
27ebb97d0a
Handle EOFs in string literals correctly
We can't return a STR token without setting a valid StringToken,
otherwise the parser will crash.

Fixes #6562.
2022-05-25 17:58:13 +02:00
thkoch2001
7388cd55bf Change json example to be original
Closes: #3391
2022-05-05 12:39:23 +03:00
Eelco Dolstra
17e3f353df Merge branch 'parser-improvements' of https://github.com/pennae/nix 2022-02-02 12:45:44 +01:00
regnat
f113ea6c73 Fix parsing of variable names that are a suffix of '__curPos'
Follow-up from #5969
Fix #5982
2022-01-25 10:49:27 +01:00
Eelco Dolstra
bed8270c0c Fix parsing of variable names that are a prefix of '__curPos'
Fixes

  $ nix-instantiate --parse -E 'x: with x; _'
  (x: (with x; __curPos))
2022-01-24 15:18:18 +01:00
pennae
7d4cc5515c defer formals duplicate check for incresed efficiency all round
if we defer the duplicate argument check for lambda formals we can use more
efficient data structures for the formals set, and we can get rid of the
duplication of formals names to boot. instead of a list of formals we've seen
and a set of names we'll keep a vector instead and run a sort+dupcheck step
before moving the parsed formals into a newly created lambda. this improves
performance on search and rebuild by ~1%, pure parsing gains more (about 4%).

this does reorder lambda arguments in the xml output, but the output is still
stable. this shouldn't be a problem since argument order is not semantically
important anyway.

 before

  nix search --no-eval-cache --offline ../nixpkgs hello
    Time (mean ± σ):      8.550 s ±  0.060 s    [User: 6.470 s, System: 1.664 s]
    Range (min … max):    8.435 s …  8.666 s    20 runs

  nix eval -f ../nixpkgs/pkgs/development/haskell-modules/hackage-packages.nix
    Time (mean ± σ):     346.7 ms ±   2.1 ms    [User: 312.4 ms, System: 34.2 ms]
    Range (min … max):   343.8 ms … 353.4 ms    20 runs

  nix eval --raw --impure --expr 'with import <nixpkgs/nixos> {}; system'
    Time (mean ± σ):      2.720 s ±  0.031 s    [User: 2.415 s, System: 0.231 s]
    Range (min … max):    2.662 s …  2.780 s    20 runs

 after

  nix search --no-eval-cache --offline ../nixpkgs hello
    Time (mean ± σ):      8.462 s ±  0.063 s    [User: 6.398 s, System: 1.661 s]
    Range (min … max):    8.339 s …  8.542 s    20 runs

  nix eval -f ../nixpkgs/pkgs/development/haskell-modules/hackage-packages.nix
    Time (mean ± σ):     329.1 ms ±   1.4 ms    [User: 296.8 ms, System: 32.3 ms]
    Range (min … max):   326.1 ms … 330.8 ms    20 runs

  nix eval --raw --impure --expr 'with import <nixpkgs/nixos> {}; system'
    Time (mean ± σ):      2.687 s ±  0.035 s    [User: 2.392 s, System: 0.228 s]
    Range (min … max):    2.626 s …  2.754 s    20 runs
2022-01-19 17:07:29 +01:00
pennae
00c993f48b add zipAttrsWith primop
nixpkgs can save a good bit of eval memory with this primop. zipAttrsWith is
used quite a bit around nixpkgs (eg in the form of recursiveUpdate), but the
most costly application for this primop is in the module system. it improves
the implementation of zipAttrsWith from nixpkgs by not checking an attribute
multiple times if it occurs more than once in the input list, allocates less
values and set elements, and just avoids many a temporary object in general.

nixpkgs has a more generic version of this operation, zipAttrsWithNames, but
this version is only used once so isn't suitable for being the base of a new
primop. if it were to be used more we should add a second primop instead.
2022-01-03 21:05:53 +01:00
Silvan Mosberger
d9fbe3e208 Add a test case for builtins.groupBy 2021-12-16 19:59:13 +01:00
Silvan Mosberger
09471d2680 Make lists be comparable
Makes lists comparable using lexicographic comparison.

Increments builtins.langVersion in order for this change to be
detectable
2021-11-24 13:40:46 +01:00
Taeer Bar-Yam
a6bfda7d95 path antiquotations: rename confusing test 2021-08-06 07:38:52 -04:00
Taeer Bar-Yam
624162c729 add path antiqutations test 2021-08-06 07:06:52 -04:00
Timothy Klim
4da9ec772c Add .tar.zst support for TarballInputScheme 2021-05-29 16:03:26 +07:00
Maximilian Bosch
7f7f99f350
Implement builtins.floor and builtins.ceil using the C library functions internally
Closes #4782

Note: even though the type is internally called `NixFloat`, it's
actually a `double`.
2021-05-10 12:19:32 +02:00
Eelco Dolstra
75efa42134 Move <nix/fetchurl.nix> into the nix binary
This makes the statically linked nix binary just work, without needing
any additional files.
2020-12-22 14:43:20 +01:00
regnat
250f8a4bba Escape ${ in strings when printing Nix expressions
Otherwise the result of the printing can't be parsed back correctly by
Nix (because the unescaped `${` will be parsed as the begining of an
anti-quotation).

Fix #3989
2020-09-14 17:19:25 +02:00
Silvan Mosberger
c34e96f7e0
Make function arguments retain position info
This allows querying the location of function arguments. E.g.

  builtins.unsafeGetAttrPos "x" (builtins.functionArgs ({ x }: null))

  => { column = 57; file = "/home/infinisil/src/nix/inst/test.nix"; line = 1; }
2020-04-02 05:52:52 +02:00
Eelco Dolstra
9950cdec35 Move some corepkgs into the nix binary 2020-03-11 16:57:48 +01:00
Eelco Dolstra
d700eecea9
Add test for foldl' 2020-03-04 11:43:48 +01:00
Nikola Knezevic
52a8f9295b Add support for \u escape in fromJSON
As fromTOML supports \u and \U escapes, bring fromJSON on par. As JSON defaults
to UTF-8 encoding (every JSON parser must support UTF-8), this change parses the
`\u hex hex hex hex` sequence (\u followed by 4 hexadecimal digits) into an
UTF-8 representation.

Add a test to verify correct parsing, using all escape sequences from json.org.
2020-01-07 00:09:58 +01:00
Puck Meerburg
cdadbf7708 Add testcase for attrset using __overrides and dynamic attrs 2019-11-25 13:03:54 +00:00
Eelco Dolstra
e012384fe9
Merge branch 'tojson-tostring-fix' of https://github.com/mayflower/nix 2019-10-27 12:18:35 +01:00
Robin Gloster
e583df5280
builtins.toJSON: fix __toString usage 2019-10-27 10:15:51 +01:00
Eelco Dolstra
94f11d0a61
Fix abort in fromTOML
Fixes #2969.
2019-06-24 17:09:09 +02:00
Eelco Dolstra
99cec651c9
Add more fromTOML tests 2019-06-24 16:52:11 +02:00
Eelco Dolstra
17ef3e6f41
Enable more fromTOML tests
cpptoml now parses almost all examples from the spec.
2019-05-29 12:22:52 +02:00
Eelco Dolstra
cfd74aef1e
Fix eval-okay-fromTOML test
Turns out we were mis-parsing single-quoted attributes, e.g. 'key2'.
2019-05-29 12:12:02 +02:00
Eelco Dolstra
9eaebbf575
Merge branch 'attrPaths' of https://github.com/NinjaTrappeur/nix 2019-05-28 22:59:05 +02:00
Will Dietz
a834861876
fix hashfile test that wasn't failing due to eval laziness
See:
7becb1bf1c (r33450554)
2019-05-08 10:04:54 +02:00
Daniel Schaefer
3f192ac80c Add builtins.hashFile
For text files it is possible to do it like so:
`builtins.hashString "sha256" (builtins.readFile /tmp/a)`
but that doesn't work for binary files.

With builtins.hashFile any kind of file can be conveniently hashed.
2019-05-03 17:23:36 +02:00
Eelco Dolstra
e489f5cabf Update eval-okay-types.exp to match #1828 2019-03-27 21:07:04 +01:00
zimbatm
514b3c7f83
Add isPath primop
this is added for completeness' sake since all the other possible
`builtins.typeOf` results have a corresponding `builtins.is<Type>`
2019-03-24 11:36:49 +01:00
Shea Levy
b30be6b450
Add builtins.appendContext.
A partner of builtins.getContext, useful for the same reasons.
2019-01-31 08:52:23 -05:00
Shea Levy
1d757292d0
Add builtins.getContext.
This can be very helpful when debugging, as well as enabling complex
black magic like surgically removing a single dependency from a
string's context.
2019-01-14 11:27:10 -05:00
Eelco Dolstra
9b1bdf2db8
FIx floating point evaluation
Fixes #2361.
2018-08-19 11:59:49 +02:00
volth
403a76a18f lib.concatMap and lib.mapAttrs to be builtins 2018-07-05 02:54:09 +00:00
Eelco Dolstra
3b1f54cf06
Add a fromTOML primop
This is primarily useful for processing Cargo.lock files.
2018-07-03 18:39:36 +02:00
volth
88c1ea30e4 add docs and tests 2018-05-24 12:51:34 +00:00
Eelco Dolstra
1ad19232c4
Don't return negative numbers from the flex tokenizer
Fixes #1374.
Closes #2129.
2018-05-11 12:05:12 +02:00
Eelco Dolstra
548ad391d9
Fix builtins.add test
Nix prints the floating point number 4.0 as "4".
2018-05-02 13:49:32 +02:00
Félix Baylac-Jacqué
b2f3a7411a
nix-lang: Add deep nested mixed attrs test case. 2018-05-01 14:42:34 +02:00
Tim Sears
9a714f75af
add tests for builtins.add 2018-04-29 12:03:42 -07:00
Shea Levy
e2b028353b
Merge branch 'pos-crash-fix' of git://github.com/dezgeg/nix 2018-04-23 08:43:54 -04:00
Shea Levy
0aae411eaa
Merge branch 'add-test-eval-okay-nested-with' of git://github.com/ryantrinkle/nix 2018-04-23 08:43:14 -04:00
Félix Baylac-Jacqué
00584bb091
parser: Allow mixed nested and top-level attrpaths
Fixes #2077.
2018-04-18 18:44:38 +02:00
Félix Baylac-Jacqué
10d33452e2
nix-lang parser: Add mixed nested attrs tests.
Part of issue #2077
2018-04-17 09:13:01 +02:00
Doug Beardsley
72902ec399 Add missing eval-okay-regex-split.exp test file 2018-04-06 12:18:59 -06:00
Tuomas Tynkkynen
af86132e1a libexpr: Make unsafeGetAttrPos not crash on noPos
Currently e.g. `builtins.unsafeGetAttrPos "abort" builtins` will
eventually segfault because pos->file is an unset Symbol.

Found by afl-fuzz.
2018-04-03 15:54:42 +03:00
Ryan Trinkle
f2273b11f5 Add test eval-okay-nested-with 2018-03-30 15:41:16 -04:00
Tuomas Tynkkynen
a0e38c16bc libexpr: Recognize newline in more places in lexer
Flex's regexes have an annoying feature: the dot matches everything
except a newline. This causes problems for expressions like:

"${0}\
"

where the backslash-newline combination matches this rule instead of the
intended one mentioned in the comment:

    <STRING>\$|\\|\$\\ {
                    /* This can only occur when we reach EOF, otherwise the above
                    (...|\$[^\{\"\\]|\\.|\$\\.)+ would have triggered.
                    This is technically invalid, but we leave the problem to the
                    parser who fails with exact location. */
                    return STR;
                }
However, the parser actually accepts the resulting token sequence
('"' DOLLAR_CURLY 0 '}' STR '"'), which is a problem because the lexer
rule didn't assign anything to yylval. Ultimately this leads to a crash
when dereferencing a NULL pointer in ExprConcatStrings::bindVars().

The fix does change the syntax of the language in some corner cases
but I think it's only turning previously invalid (or crashing) syntax
to valid syntax. E.g.

"a\
b"

and

''a''\
b''

were previously syntax errors but now both result in "a\nb".

Found by afl-fuzz.
2018-03-02 17:30:48 +02:00
Tuomas Tynkkynen
77e9e1ed91 libexpr: Fix prim_replaceStrings() to work on an empty source string
Otherwise, running e.g.

nix-instantiate --eval -E --strict 'builtins.replaceStrings [""] ["X"] "abc"'

would just hang in an infinite loop.

Found by afl-fuzz.

First attempt of this was reverted in e2d71bd186 because it caused
another infinite loop, which is fixed now and a test added.
2018-02-26 19:49:13 +02:00