In REPL, if we evaluate the `RegExp` object's predefined properties,
and if they happen to have the same expression, for example,
> RegExp.$1
'RegExp.$1'
then doing `eval(RegExp.$1)` would evaluate `RegExp.$1` recursively and
eventually throw `RangeError: Maximum call stack size exceeded`.
This patch stores the old values of `RegExp`'s predefined proprties in
an array and restores them just before the current expression entered
by user is evaluated.
Fixes: https://github.com/nodejs/io.js/issues/597
PR-URL: https://github.com/nodejs/io.js/pull/2137
Reviewed-By: Ben Noordhuis <info@bnoordhuis.nl>
In REPL, if we try to evaluate an empty line, we get `undefined`.
> process.version
'v2.3.4'
>
undefined
>
undefined
>
This patch prevents `undefined` from printing if the string is empty.
> process.version
'v2.3.5-pre'
>
>
>
PR-URL: https://github.com/nodejs/io.js/pull/2163
Reviewed-By: Jeremiah Senkpiel <fishrock123@rocketmail.com>
As it is, REPL doesn't honour the line continuation feature very well.
This patch
1. keeps track of the beginning of the string literals and if they
don't end or current line doesn't end with line continuation, then
error out.
2. monitors if the line continuation character is used without the
string literal and errors out if that happens.
PR-URL: https://github.com/nodejs/io.js/pull/2163
Reviewed-By: Jeremiah Senkpiel <fishrock123@rocketmail.com>
When an inherited property is used as a REPL keyword, the REPL crashes.
➜ Desktop iojs
> process.version
'v2.3.4'
> .toString
readline.js:913
stream[ESCAPE_DECODER].next(r[i]);
^
TypeError: Cannot read property 'call' of undefined
at REPLServer.parseREPLKeyword (repl.js:746:15)
at REPLServer.<anonymous> (repl.js:284:16)
at emitOne (events.js:77:13)
at REPLServer.emit (events.js:169:7)
at REPLServer.Interface._onLine (readline.js:210:10)
at REPLServer.Interface._line (readline.js:549:8)
at REPLServer.Interface._ttyWrite (readline.js:826:14)
at ReadStream.onkeypress (readline.js:105:10)
at emitTwo (events.js:87:13)
at ReadStream.emit (events.js:172:7)
➜ Desktop
This patch makes the internal `commands` object inherit from `null` so
that there will be no inherited properties.
> process.version
'v2.3.5-pre'
> .toString
Invalid REPL keyword
>
PR-URL: https://github.com/nodejs/io.js/pull/2163
Reviewed-By: Jeremiah Senkpiel <fishrock123@rocketmail.com>
When an invalid REPL keyword is used, we actually print `undefined` as
well in the console.
> process.version
'v2.3.4'
> .invalid_repl_command
Invalid REPL keyword
undefined
>
This patch prevents printing `undefined` in this case.
> process.version
'v2.3.5-pre'
> .invalid_repl_command
Invalid REPL keyword
>
PR-URL: https://github.com/nodejs/io.js/pull/2163
Reviewed-By: Jeremiah Senkpiel <fishrock123@rocketmail.com>
If the proxy objects don't have a valid `hasOwnPropertyNames` trap,
REPL crashes with a `TypeError`, as per the bug report
https://github.com/nodejs/io.js/issues/2119
> var proxy = Proxy.create({ fix: function() { return {}; } });
undefined
> proxy.<tab>
TypeError: Proxy handler #<Object> has no 'getOwnPropertyNames' trap
at Function.getOwnPropertyNames (native)
at repl.js:644:40
at REPLServer.defaultEval (repl.js:169:5)
at bound (domain.js:254:14)
at REPLServer.runBound [as eval] (domain.js:267:12)
at REPLServer.complete (repl.js:639:14)
at REPLServer.complete [as completer] (repl.js:207:10)
at REPLServer.Interface._tabComplete (readline.js:377:8)
at REPLServer.Interface._ttyWrite (readline.js:845:14)
at ReadStream.onkeypress (readline.js:105:10)
This patch traps the error thrown and suppresses it.
PR-URL: https://github.com/nodejs/io.js/pull/2120
Fixes: https://github.com/nodejs/io.js/issues/2119
Reviewed-By: Colin Ihrig <cjihrig@gmail.com>
Reviewed-By: Evan Lucas <evanlucas@me.com>
It's long past v0.3.0 and .break isn't going anywhere anytime soon.
PR-URL: https://github.com/nodejs/io.js/pull/2081
Reviewed-By: Ben Noordhuis <info@bnoordhuis.nl>
Reviewed-By: Brian White <mscdex@mscdex.net>
It makes no sense to allow people use constants from
`smalloc`, since it will be removed completely eventually.
PR-URL: https://github.com/nodejs/io.js/pull/1822
Reviewed-By: Ben Noordhuis <info@bnoordhuis.nl>
There is no need to check for globals and also check if it is
an array.
PR-URL: https://github.com/nodejs/io.js/pull/1722
Reviewed-By: Colin Ihrig <cjihrig@gmail.com>
REPL evaluate `.scope` when it needs to get a list of the variable names
available in the current scope. Do not throw if the output of such
evaluation is not array, just ignore it.
PR-URL: https://github.com/nodejs/io.js/pull/1682
Reviewed-By: Fedor Indutny <fedor@indutny.com>
The _debugger module uses the internal REPL module, but expects
to receive the userland REPL module. This fixes the breakage that
occurs by proxying the userland REPL module through the internal
module.
It also fixes an unintended in-REPL bug, where require(node-module)
was not resolving correctly.
PR-URL: https://github.com/iojs/io.js/pull/1605
Reviewed-By: Roman Reiss <me@silverwind.io>
this creates a new internal module responsible for providing
the repl created via "iojs" or "iojs -i," and adds the following
options to the readline and repl subsystems:
* "repl mode" - determine whether a repl is strict mode, sloppy mode,
or auto-detect mode.
* historySize - determine the maximum number of lines a repl will store
as history.
The built-in repl gains persistent history support when the
NODE_REPL_HISTORY_FILE environment variable is set. This functionality
is not exposed to userland repl instances.
PR-URL: https://github.com/iojs/io.js/pull/1513
Reviewed-By: Fedor Indutny <fedor@indutny.com>
The current working directory may not exist when the REPL starts up.
Don't treat that as an error because it's still possible to do many
useful things. This is like the previous commit but for the REPL.
Fixes: https://github.com/iojs/io.js/issues/1184
PR-URL: https://github.com/iojs/io.js/pull/1194
Reviewed-By: Johan Bergström <bugs@bergstroem.nu>
Reviewed-By: Rod Vagg <rod@vagg.org>
Many of the util.is*() methods used to check data types
simply compare against a single value or the result of
typeof. This commit replaces calls to these methods with
equivalent checks. This commit does not touch calls to the
more complex methods (isRegExp(), isDate(), etc.).
Fixes: https://github.com/iojs/io.js/issues/607
PR-URL: https://github.com/iojs/io.js/pull/647
Reviewed-By: Ben Noordhuis <info@bnoordhuis.nl>
This commit replaces a number of var statements throughout
the lib code with const statements.
PR-URL: https://github.com/iojs/io.js/pull/541
Reviewed-By: Ben Noordhuis <info@bnoordhuis.nl>
Let REPL enter multiline mode if user's input contains unterminated
template literals.
PR-URL: https://github.com/iojs/io.js/pull/333
Reviewed-By: Ben Noordhuis <info@bnoordhuis.nl>
The copyright and license notice is already in the LICENSE file. There
is no justifiable reason to also require that it be included in every
file, since the individual files are not individually distributed except
as part of the entire package.
I introduced this module over a year ago in a pull request as the v8
module but it was quickly subsumed by the tracing module.
The tracing module was recently removed again and that is why this
commit introduces the v8 module again, including the new features it
picked up commits d23ac0e and f8076c4.
PR-URL: https://github.com/iojs/io.js/pull/131
Reviewed-By: Chris Dickinson <christopher.s.dickinson@gmail.com>
Reviewed-By: Christian Tellnes <christian@tellnes.no>
Reviewed-By: Thorsten Lorenz <thlorenz@gmx.de>
Reviewed-By: Trevor Norris <trev.norris@gmail.com>
Async Listener was the name of the user-facing JS API, and is being
completely removed. Instead low level hooks directly into the mechanism
that AL used will be introduced in a future commit.
PR-URL: https://github.com/joyent/node/pull/8110
Signed-off-by: Trevor Norris <trev.norris@gmail.com>
Reviewed-by: Fedor Indutny <fedor@indutny.com>
Reviewed-by: Alexis Campailla <alexis@janeasystems.com>
Reviewed-by: Julien Gilli <julien.gilli@joyent.com>
Turn on strict mode for the files in the lib/ directory. It helps
catch bugs and can have a positive effect on performance.
PR-URL: https://github.com/node-forward/node/pull/64
Reviewed-By: Colin Ihrig <cjihrig@gmail.com>
Reviewed-By: Fedor Indutny <fedor@indutny.com>
The refactor in 3ae0b17c broke the multiline input's visual appearence.
While actually switching to this mode, the `...` prefix is not
displayed.
Additionally, account only SyntaxErrors that are happening at the parse
time, everything else should not be switching repl to the multiline
mode.
Signed-off-by: Fedor Indutny <fedor@indutny.com>
Add a new 'tracing' module with a v8 property that lets the user
register listeners for gc events. The listeners are invoked after
every garbage collection cycle with 'before' and 'after' statistics.
Useful for monitoring tools that want to keep track of memory usage.
Fix invalid `hasOwnProperty` function usage.
For example, before in the REPL:
```
> Ar<Tab>
Array
Array ArrayBuffer
```
Now:
```
> Ar<Tab>
Array
ArrayBuffer
```
Fixes#6255.
Closes#6498.
This simplifies the logic that was in isSyntaxError, as well as the
choice to wrap command input in parens to coerce to an expression
statement.
1. Rather than a growing blacklist of allowed-to-throw syntax errors,
just sniff for the one we really care about ("Unexpected end of input")
and let all the others pass through.
2. Wrapping {a:1} in parens makes sense, because blocks and line labels
are silly and confusing and should not be in JavaScript at all.
However, wrapping functions and other types of programs in parens is
weird and required yet *more* hacking to work around. By only wrapping
statements that start with { and end with }, we can handle the confusing
use-case, without having to then do extra work for functions and other
cases.
This also fixes the repl wart where `console.log)(` works in the repl,
but only by virtue of the fact that it's wrapped in parens first, as
well as potential side effects of double-running the commands, such as:
> x = 1
1
> eval('x++; throw new SyntaxError("e")')
... ^C
> x
3
Adding a new `repl-harmony` test file here because adding the
`--use_strict --harmony` flags on the main repl test file was causing
lots of unrelated failures, due to global variable assignments and
things like that. This new test file is based off of the original
repl.js test file, but has a lot of the tests stripped out. A test case
for this commit is included though.
Fixes#6132.
Replace the growing list of 'isSyntaxError' whackamole conditions with a
smarter approach. This creates a vm Script object *first*, which will
parse the code and raise a SyntaxError right away.
We still do need the test function, but only because strict mode syntax
errors are not recoverable, and should be raised right away. Really, we
should probably *only* continue on "unexpected end of input" SyntaxErrors.
Also fixes a very difficult-to-test nit where the '...' indentation is
not properly cleared when you ^C out of a syntax error.
Closes#6093
Passing a filename is still supported in place of certain options
arguments, for backward-compatibility, but timeout and display-errors
are not translated since those were undocumented.
Also managed to eliminate an extra stack trace line by not calling
through the `createScript` export.
Added a few message tests to show how `displayErrors` works.
This is an important part of the repl use-case.
TODO: The arg parsing in vm.runIn*Context() is rather wonky.
It would be good to move more of that into the Script class,
and/or an options object.
Before this, entering something like:
> JSON.parse('066');
resulted in the "..." prompt instead of displaying the expected
"SyntaxError: Unexpected number"
The try/catch in repl.js keeps any active domain from catching the
error. Since the domain may not even be enterd until the code is run,
it's not possible to avoid the try/catch, so emit on the domain when an
error is thrown.
Sakthipriyan Vairamani
Rich Trott
Julien Gilli
Sangmin Yoon
Vladimir Kurchatkin
Yazhong Liu
Yosuke Furukawa
Chris Dickinson
Ben Noordhuis
cjihrig
Xiaowei Li
isaacs
Bert Belder
Trevor Norris
Fedor Indutny
Brian White
Timothy J Fontaine
Yazhong Liu
Maciej Małecki
Nathan Rajlich
Domenic Denicola
Sami Samhuri
Dave Olszewski