Currently there are two ways wasm locations are represented in the
inspector. This remains unchanged for now. Also, currently there are
multiple ways location is represented within V8, with the line number
sometimes being a function index and sometimes being 0, and the column
number being a byte offset which is sometimes function relative and
sometimes module relative. With this change, the line number is never
used within V8 (it is always 0), and the column number is always a
byte offset from the beginning of the module. This simplifies
translation logic and keeps it in one place, and will simplify future
changes to wasm location representation in the inspector API.
Bug: chromium:1013527
Change-Id: I8813d47c881988f9ab49d7529fb81fe10dbbccff
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/1886915
Commit-Queue: Eric Leese <leese@chromium.org>
Reviewed-by: Simon Zünd <szuend@chromium.org>
Reviewed-by: Yang Guo <yangguo@chromium.org>
Reviewed-by: Clemens Backes <clemensb@chromium.org>
Cr-Commit-Position: refs/heads/master@{#64774}
Currently if the argument to matchAll has a null or undefined .flags
property, the error message will read "String.prototype.matchAll called
on null or undefined", which is very confusing.
Drive-by fix: Remove the related and unused
MethodInvokedOnNullOrUndefined error.
Bug: v8:9895
Change-Id: I3644545282ac8d2156c7a51086e37a0ab7f97a78
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/1874619
Commit-Queue: Shu-yu Guo <syg@chromium.org>
Reviewed-by: Jakob Gruber <jgruber@chromium.org>
Cr-Commit-Position: refs/heads/master@{#64530}
Adds support for parsing top level await to V8, as well as
many tests.
This is the final cl in the series to add support for top level
await to v8.
Spec is here:
https://tc39.es/proposal-top-level-await/#sec-execute-async-module
Bug: v8:9344
Change-Id: Ie8f17ad8c7c60d1f6996d134ae154416cc1f31e3
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/1703878
Reviewed-by: Georg Neis <neis@chromium.org>
Reviewed-by: Adam Klein <adamk@chromium.org>
Commit-Queue: Joshua Litt <joshualitt@chromium.org>
Cr-Commit-Position: refs/heads/master@{#63946}
This is a reland of 1fba044154
Chromium expectation tests have been disabled, and will be enabled
Original change's description:
> [destructuring] Elide coercible check for simple keys
>
> Simple object destructuring, such as `let {a,b} = o`, is less efficient
> than the equivalent assignments `let a = o.a; let b = o.b`. This is
> because it does a nil check of `o` before the assignments. However, this
> nil check is not strictly necessary for simple (i.e. non-computed) names,
> as there will be an equivalent nil check on the first access to o in
> `o.a`. For computed names the computation is unfortunately obervable.
>
> So, we can elide the nil check when the first property (if any) of the
> destructuring target is a non-computed name. This messes a bit with our
> error messages, so we re-use the CallPrinter to also find destructuring
> assignment based errors, and fiddle with the error message there. As
> a side-effect, we also get out the object name in the AST, so we can
> output a slightly nicer error message.
>
> Change-Id: Iafa858e27ed771a146cd3ba57903cc73bb46951d
> Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/1773254
> Reviewed-by: Leszek Swirski <leszeks@chromium.org>
> Reviewed-by: Toon Verwaest <verwaest@chromium.org>
> Commit-Queue: Leszek Swirski <leszeks@chromium.org>
> Cr-Commit-Position: refs/heads/master@{#63453}
TBR=verwaest@chromium.org
Bug: chromium:999473
Change-Id: Ib0b2e4be433c50521ba1722e1c06b672bfefa405
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/1777702
Reviewed-by: Leszek Swirski <leszeks@chromium.org>
Commit-Queue: Leszek Swirski <leszeks@chromium.org>
Cr-Commit-Position: refs/heads/master@{#63477}
This patch implements the access of private accessors by loading the
referenced component from the AccessorPair associated with private
name variables. It also makes the error messages for invalid kind
of private accessor access more specific.
Bug: v8:8330
Design doc: https://docs.google.com/document/d/10W4begYfs7lmldSqBoQBBt_BKamgT8igqxF9u50RGrI/edit
Change-Id: I6d441cffb85f8d9cd0417ec9b6ae20f3e34ef418
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/1695205
Reviewed-by: Ross McIlroy <rmcilroy@chromium.org>
Commit-Queue: Joyee Cheung <joyee@igalia.com>
Cr-Commit-Position: refs/heads/master@{#63474}
This reverts commit 1fba044154.
Reason for revert: blocks V8 roll due to layout test failures caused by error message changes:
https://ci.chromium.org/p/v8/builders/ci/V8%20Blink%20Linux/347
Original change's description:
> [destructuring] Elide coercible check for simple keys
>
> Simple object destructuring, such as `let {a,b} = o`, is less efficient
> than the equivalent assignments `let a = o.a; let b = o.b`. This is
> because it does a nil check of `o` before the assignments. However, this
> nil check is not strictly necessary for simple (i.e. non-computed) names,
> as there will be an equivalent nil check on the first access to o in
> `o.a`. For computed names the computation is unfortunately obervable.
>
> So, we can elide the nil check when the first property (if any) of the
> destructuring target is a non-computed name. This messes a bit with our
> error messages, so we re-use the CallPrinter to also find destructuring
> assignment based errors, and fiddle with the error message there. As
> a side-effect, we also get out the object name in the AST, so we can
> output a slightly nicer error message.
>
> Change-Id: Iafa858e27ed771a146cd3ba57903cc73bb46951d
> Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/1773254
> Reviewed-by: Leszek Swirski <leszeks@chromium.org>
> Reviewed-by: Toon Verwaest <verwaest@chromium.org>
> Commit-Queue: Leszek Swirski <leszeks@chromium.org>
> Cr-Commit-Position: refs/heads/master@{#63453}
TBR=leszeks@chromium.org,verwaest@chromium.org
Change-Id: I74cf06ebd987e5b8bbe1831b0042c085edf37f5b
No-Presubmit: true
No-Tree-Checks: true
No-Try: true
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/1776994
Reviewed-by: Adam Klein <adamk@chromium.org>
Commit-Queue: Adam Klein <adamk@chromium.org>
Cr-Commit-Position: refs/heads/master@{#63465}
Simple object destructuring, such as `let {a,b} = o`, is less efficient
than the equivalent assignments `let a = o.a; let b = o.b`. This is
because it does a nil check of `o` before the assignments. However, this
nil check is not strictly necessary for simple (i.e. non-computed) names,
as there will be an equivalent nil check on the first access to o in
`o.a`. For computed names the computation is unfortunately obervable.
So, we can elide the nil check when the first property (if any) of the
destructuring target is a non-computed name. This messes a bit with our
error messages, so we re-use the CallPrinter to also find destructuring
assignment based errors, and fiddle with the error message there. As
a side-effect, we also get out the object name in the AST, so we can
output a slightly nicer error message.
Change-Id: Iafa858e27ed771a146cd3ba57903cc73bb46951d
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/1773254
Reviewed-by: Leszek Swirski <leszeks@chromium.org>
Reviewed-by: Toon Verwaest <verwaest@chromium.org>
Commit-Queue: Leszek Swirski <leszeks@chromium.org>
Cr-Commit-Position: refs/heads/master@{#63453}
This is a reland of 89d93e3851
Original change's description:
> Reland "Let all early errors be SyntaxErrors."
>
> This is a reland of 99fd5b9b9d which includes a missed update to
> test/test262/test262.status.
>
> Implement the spec change from the following TC39 PR:
> https://github.com/tc39/ecma262/pull/1527
>
> Bug: v8:9326
> Change-Id: Ie3aac60db550e90fb648fc30886a05419fa41afe
> TBR: adamk@chromium.org
> Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/1682989
> Reviewed-by: Sathya Gunasekaran <gsathya@chromium.org>
> Commit-Queue: Sathya Gunasekaran <gsathya@chromium.org>
> Cr-Commit-Position: refs/heads/master@{#62500}
Bug: v8:9326
Change-Id: Ic30280400dfa5b83a4a397888e563eee479446c5
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/1688271
Reviewed-by: Toon Verwaest <verwaest@chromium.org>
Reviewed-by: Tamer Tas <tmrts@chromium.org>
Commit-Queue: Sathya Gunasekaran <gsathya@chromium.org>
Cr-Commit-Position: refs/heads/master@{#62553}
This reverts commit 89d93e3851.
Reason for revert: Breaks layout tests: https://ci.chromium.org/p/v8/builders/ci/V8-Blink%20Linux%2064/32929
Original change's description:
> Reland "Let all early errors be SyntaxErrors."
>
> This is a reland of 99fd5b9b9d which includes a missed update to
> test/test262/test262.status.
>
> Implement the spec change from the following TC39 PR:
> https://github.com/tc39/ecma262/pull/1527
>
> Bug: v8:9326
> Change-Id: Ie3aac60db550e90fb648fc30886a05419fa41afe
> TBR: adamk@chromium.org
> Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/1682989
> Reviewed-by: Sathya Gunasekaran <gsathya@chromium.org>
> Commit-Queue: Sathya Gunasekaran <gsathya@chromium.org>
> Cr-Commit-Position: refs/heads/master@{#62500}
TBR=adamk@chromium.org,gsathya@chromium.org,verwaest@chromium.org,rkirsling@gmail.com
Change-Id: Ia56dcda6780a2b1249749e1e7978b35b5e33fbcf
No-Presubmit: true
No-Tree-Checks: true
No-Try: true
Bug: v8:9326
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/1687678
Reviewed-by: Clemens Hammacher <clemensh@chromium.org>
Commit-Queue: Clemens Hammacher <clemensh@chromium.org>
Cr-Commit-Position: refs/heads/master@{#62509}
This is a reland of 99fd5b9b9d which includes a missed update to
test/test262/test262.status.
Implement the spec change from the following TC39 PR:
https://github.com/tc39/ecma262/pull/1527
Bug: v8:9326
Change-Id: Ie3aac60db550e90fb648fc30886a05419fa41afe
TBR: adamk@chromium.org
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/1682989
Reviewed-by: Sathya Gunasekaran <gsathya@chromium.org>
Commit-Queue: Sathya Gunasekaran <gsathya@chromium.org>
Cr-Commit-Position: refs/heads/master@{#62500}
Implement the spec change from the following TC39 PR:
https://github.com/tc39/ecma262/pull/1527
Bug: v8:9326
Change-Id: I9639903b12e7621e323990e2335f00e0313a59c3
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/1643171
Reviewed-by: Adam Klein <adamk@chromium.org>
Reviewed-by: Toon Verwaest <verwaest@chromium.org>
Commit-Queue: Adam Klein <adamk@chromium.org>
Cr-Commit-Position: refs/heads/master@{#62451}
d8 treats files with the .mjs extension as modules instead of
classic scripts. Thus, the `// MODULE` pragma and its corresponding
logic in test runners can be removed in favor of explicitly adding
the extension.
Bug: v8:7950, v8:9395, v8:9406
Also-By: tmrts@chromium.org
Change-Id: Ic74328dc5c5f176bb4bdf6d74bdd4d3966279ba5
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/1675958
Commit-Queue: Mathias Bynens <mathias@chromium.org>
Reviewed-by: Tamer Tas <tmrts@chromium.org>
Auto-Submit: Mathias Bynens <mathias@chromium.org>
Cr-Commit-Position: refs/heads/master@{#62421}
Perform a best-effort check for module context and provide an
appropriate error.
As seen from the import-blah-script.js test, we could have invalid
import expressions in a script context that could result in an error
saying "Cannot use import statement outside a module" which isn't
the ideal error because the error is an incorrect import
expression.
But, when the developer changes to a module context, the
correct error is thrown.
To fix this, we'd have to refactor and call ParseImportDeclaration,
and then throw an appropriate error, which seems like a lot of
overhead for not enough gain.
Bug: v8:9392, v8:6513
Change-Id: I520ebb490fff4d95743a7c751d4095db9a35d41b
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/1675948
Reviewed-by: Mythri Alle <mythria@chromium.org>
Reviewed-by: Georg Neis <neis@chromium.org>
Commit-Queue: Sathya Gunasekaran <gsathya@chromium.org>
Cr-Commit-Position: refs/heads/master@{#62358}
This patch implements the access of private methods:
- When building property loads, check whether it requires
a brand check. If so, build the brand check and load the
property (the method) from the context instead.
- Throw type errors when there is an attempted write to private
methods.
Design: https://docs.google.com/document/d/1T-Ql6HOIH2U_8YjWkwK2rTfywwb7b3Qe8d3jkz72KwA/edit#
Bug: v8:8330
Change-Id: Ic917d2a0030196c1940b0c0ba65a340af736c769
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/1610383
Commit-Queue: Joyee Cheung <joyee@igalia.com>
Reviewed-by: Ross McIlroy <rmcilroy@chromium.org>
Cr-Commit-Position: refs/heads/master@{#62292}
Currently, in wasm-function stack traces, v8 displays the decimal offset
from the start of the function. However, the WebAssembly WebAPI
specification says that it should be a hex offset into the module.
This change makes the stack trace display with hex module offsets, as
well as fixing all the unit tests that depended on the old behaviour.
R=fgm@chromium.org, titzer@chromium.org, yangguo@chromium.org
Bug: v8:9172
Change-Id: I73737a319a42dd665521ab8a4b825199ae11c87f
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/1646846
Reviewed-by: Ben Titzer <titzer@chromium.org>
Reviewed-by: Simon Zünd <szuend@chromium.org>
Reviewed-by: Adam Klein <adamk@chromium.org>
Commit-Queue: Guanzhong Chen <gzchen@google.com>
Cr-Commit-Position: refs/heads/master@{#62103}
Quotes have been added around the token to make the message clearer.
Bug: chromium:943636
Change-Id: Ic38f3e6d307157af2c0146e69fb611a2cfb46564
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/1593307
Commit-Queue: Jakob Gruber <jgruber@chromium.org>
Reviewed-by: Jakob Gruber <jgruber@chromium.org>
Cr-Commit-Position: refs/heads/master@{#62074}
This adds two more message tests to test compile errors in
WebAssembly.compileStreaming and WebAssembly.instantiateStreaming.
R=mstarzinger@chromium.org
Bug: v8:9266
Change-Id: I34d1df4ce0fb02e14f3e5011569c8ba1d1374658
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/1619746
Commit-Queue: Clemens Hammacher <clemensh@chromium.org>
Reviewed-by: Michael Starzinger <mstarzinger@chromium.org>
Cr-Commit-Position: refs/heads/master@{#61660}
This fixes the error message generated for compile errors during
asynchronous instantiation. It shows "WebAssembly.instantiate()" now
instead of "WebAssembly.compile()".
R=mstarzinger@chromium.org
Bug: v8:9266
Change-Id: Ieae478d1c4f6843fbc17e15debb6c49f72059d99
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/1617940
Commit-Queue: Clemens Hammacher <clemensh@chromium.org>
Reviewed-by: Andreas Haas <ahaas@chromium.org>
Reviewed-by: Michael Starzinger <mstarzinger@chromium.org>
Cr-Commit-Position: refs/heads/master@{#61654}
This adds three message tests to test the message stack trace we show
for
- synchronous compilation,
- asynchronous compilation, and
- asynchronous instantiation.
Note that the message for the asynchronous cases currently contain the
"WebAssembly.Module()" prefix, which will be fixed in a separate CL.
R=mstarzinger@chromium.org
Bug: v8:9266
Change-Id: I370f4211b5f577ea1b5da026a78b292b50c6a339
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/1617938
Reviewed-by: Andreas Haas <ahaas@chromium.org>
Reviewed-by: Michael Starzinger <mstarzinger@chromium.org>
Commit-Queue: Clemens Hammacher <clemensh@chromium.org>
Cr-Commit-Position: refs/heads/master@{#61653}
This fixes the source position printed in the stack trace for exceptions
rethrown from within Wasm code. This only affects the message propagated
to the console, not the trace stored as part of the exception object.
Note that there still is a more fundamental issues with preserving the
original message of a caught exception and funneling it through to each
rethrow site, which is still missing. This change just makes sure that
the interpreter and TurboFan are consistent.
R=clemensh@chromium.org
TEST=message/fail/wasm-exception-rethrow
BUG=v8:8091
Change-Id: Iac04149ded3c54f5b23faeb83b1228081bbd3dfa
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/1598754
Reviewed-by: Clemens Hammacher <clemensh@chromium.org>
Commit-Queue: Michael Starzinger <mstarzinger@chromium.org>
Cr-Commit-Position: refs/heads/master@{#61374}
This fixes the source position printed in the stack trace for exceptions
thrown from within Wasm code. Specifically this affects the stack trace
attached to the exception object, as well as the message propagated to
the console. Both are tested by the new message test.
R=clemensh@chromium.org
TEST=message/fail/wasm-exception-throw
BUG=v8:8091
Change-Id: I5b2f76191cf47457ac113dce9d9601a8a810ee19
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/1591603
Reviewed-by: Clemens Hammacher <clemensh@chromium.org>
Commit-Queue: Michael Starzinger <mstarzinger@chromium.org>
Cr-Commit-Position: refs/heads/master@{#61239}
- Add a new ClassScope for block scopes created for classes.
- Add a VariableMap in the class scope for private name resolution,
and a separate UnresolvedList for private names that will be resolved
only using ClassScopes. These are stored in RareData and will only be
allocated when there are private name declaration or access in the
class.
Design: https://docs.google.com/document/d/1l-D70uaHzXU8QVgQZ3ACikb3FLO6LTAfQVdGDXsh5mw/edit?usp=sharing
TBR: hpayer@chromium.org
Bug: v8:8330
Bug: v8:7468
Change-Id: I78191fc075f7f195f6c56c959773c382346cce8a
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/1488271
Commit-Queue: Joyee Cheung <joyee@igalia.com>
Reviewed-by: Toon Verwaest <verwaest@chromium.org>
Reviewed-by: Sathya Gunasekaran <gsathya@chromium.org>
Cr-Commit-Position: refs/heads/master@{#60726}
Added a new Error Message for Missing Function Name.
The program:
function(){}
...now produces:
SyntaxError: Function statements require a valid function name.
...instead of:
SyntaxError: Unexpected Token (
Bug: v8:3698, v8:6513
Change-Id: I3c12dfcfe80b94209aa9af434ae1d212970cf362
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/1500914
Commit-Queue: Adam Klein <adamk@chromium.org>
Reviewed-by: Adam Klein <adamk@chromium.org>
Cr-Commit-Position: refs/heads/master@{#60376}
I thought about potentially adding the identifer ref to the error but
that would require allocating a new string or at the very least
increasing the size of the resulting cons string. Given that the
parser is pretty performance sensitive, I've decided to not display
the identifier.
Previously, the error was:
_test.js:3: Error
a[foo].c = () => { throw Error(); };
^
Error
at a.(anonymous function).c (_test.js:3:26)
at _test.js:5:1
With this patch, the error becomes:
_test.js:3: Error
a[foo].c = () => { throw Error(); };
^
Error
at a.<computed>.c (_test.js:3:26)
at _test.js:5:1
Bug: v8:8823
Change-Id: I557b3517e317652c447ca06c5a400e9625353d9b
Reviewed-on: https://chromium-review.googlesource.com/c/1495017
Commit-Queue: Sathya Gunasekaran <gsathya@chromium.org>
Reviewed-by: Mathias Bynens <mathias@chromium.org>
Reviewed-by: Toon Verwaest <verwaest@chromium.org>
Cr-Commit-Position: refs/heads/master@{#59985}
This is part 1 of 2 of clean up. C++ change in Part 2 next.
Bug: v8:8705
Change-Id: Ibf4425c141391581b963f4775286b65b652452e2
Reviewed-on: https://chromium-review.googlesource.com/c/1461172
Reviewed-by: Sathya Gunasekaran <gsathya@chromium.org>
Commit-Queue: Frank Tang <ftang@chromium.org>
Cr-Commit-Position: refs/heads/master@{#59581}
Currently, PRIVATE_NAME / PrivateIdentifier is not valid in
ObjectLiterals or other places expecting the PropertyName production.
A SyntaxError here prevents an access violation later on when attempting
to dereference a null property key
BUG=v8:8808
R=gsathya@chromium.org, littledan@chromium.org
Change-Id: Idde9c669cb48c1595b83115351a8fe0caed40eef
Reviewed-on: https://chromium-review.googlesource.com/c/1461161
Reviewed-by: Georg Neis <neis@chromium.org>
Commit-Queue: Caitlin Potter <caitp@igalia.com>
Cr-Commit-Position: refs/heads/master@{#59515}
We noticed that almost every call site were loading both files,
the split isn't necessary anymore.
In some message tests, removed the absolute line number to allow future
changes.
Bug: v8:8726
Change-Id: I8527f0a1ecfa685aa01a5e2f5f47ddf1cb13a545
Reviewed-on: https://chromium-review.googlesource.com/c/1446452
Commit-Queue: Sven Sauleau <ssauleau@igalia.com>
Reviewed-by: Ben Titzer <titzer@chromium.org>
Reviewed-by: Andreas Haas <ahaas@chromium.org>
Cr-Commit-Position: refs/heads/master@{#59220}
This CL extends the kCircularStructure error message to include the
constructors and keys involved in the circle:
const a = {};
a.arr = [];
a.arr[0] = a;
JSON.stringify(a);
TypeError: Converting circular structure to JSON
--> starting at object with constructor 'Object'
| property 'arr' -> object with constructor 'Array'
--- index 0 closes the circle
R=gsathya@chromium.org, yangguo@chromium.org
Bug: v8:6513, v8:8696
Change-Id: I393aa3ce47d8bfd03734fccac63445006940ef7a
Reviewed-on: https://chromium-review.googlesource.com/c/1433776
Reviewed-by: Yang Guo <yangguo@chromium.org>
Reviewed-by: Sathya Gunasekaran <gsathya@chromium.org>
Commit-Queue: Simon Zünd <szuend@chromium.org>
Cr-Commit-Position: refs/heads/master@{#59152}
Otherwise we might come across invalid locations.
Bug: chromium:923675
Change-Id: I0b01ba4b11cc7270744ec438bedb0b8ada2aa29d
Reviewed-on: https://chromium-review.googlesource.com/c/1426126
Commit-Queue: Georg Neis <neis@chromium.org>
Reviewed-by: Toon Verwaest <verwaest@chromium.org>
Cr-Commit-Position: refs/heads/master@{#59026}
-5**2 now produces
SyntaxError: Unary operator used immediately before exponentiation expression.
Parenthesis must be used to disambiguate operator precedence.
Bug: v8:6894
Change-Id: I89dd034ff90ee1a49ba61e0c613da534fbf8b41b
Reviewed-on: https://chromium-review.googlesource.com/c/1418592
Reviewed-by: Adam Klein <adamk@chromium.org>
Commit-Queue: Suraj Sharma <surshar@microsoft.com>
Cr-Commit-Position: refs/heads/master@{#59011}
Use variable tracking from ExpressionScopes rather than the PatternRewriter and
PreParserExpression::variables_ to declare variables.
We only figure out that variables are non-simple parameters once we see the
first non-simple parameter. This still uses the pattern rewriter to make
variables non-simple (kLet instead of kVar).
Change-Id: I4a4ee4852d667c26806bb24896722cfea3e093f2
Reviewed-on: https://chromium-review.googlesource.com/c/1417630
Reviewed-by: Leszek Swirski <leszeks@chromium.org>
Commit-Queue: Toon Verwaest <verwaest@chromium.org>
Cr-Commit-Position: refs/heads/master@{#58954}
Storing a VariableProxy in declarations means that a declaration and
initialisation assignment are tightly coupled to use the same var. In
particular, this means that Var declarations in with scopes have to
clone the VariableProxy to split the declaration and initializer LHS
lookup.
This patch changes declarations to point directly to the Variable, not
the VariableProxy. This will allow future refactoring to decouple
declarations and initialisations.
Change-Id: I0baa77bfd12fe175f9521d292740d7d712cffd37
Reviewed-on: https://chromium-review.googlesource.com/c/1406683
Reviewed-by: Toon Verwaest <verwaest@chromium.org>
Commit-Queue: Leszek Swirski <leszeks@chromium.org>
Cr-Commit-Position: refs/heads/master@{#58843}
For desrtucturing assignments from null/undefined, we throw an error
that references the destructuring object literal's property name, e.g.
for
var { x } = null;
we report that we cannot destructure 'x' from null.
Rather than calculating this property during bytecode generation (and
including it in the bytecode as an argument to the type error
constructor), we can calculate it at exception throwing time, by
re-parsing the source in a similar way to the existing call site
rendering.
This slightly decreases bytecode size and slightly decreases the amount
of work the bytecode compiler needs to do. In the future, it could also
allow us to give more detailed error messages, as we now have access to
the entire AST and are on the slow path anyway.
Bug: v8:6499
Change-Id: Icdbd4667db548b4e5e62ef97797a3771b5c1bf72
Reviewed-on: https://chromium-review.googlesource.com/c/1396080
Reviewed-by: Toon Verwaest <verwaest@chromium.org>
Reviewed-by: Sathya Gunasekaran <gsathya@chromium.org>
Commit-Queue: Leszek Swirski <leszeks@chromium.org>
Cr-Commit-Position: refs/heads/master@{#58706}
Emit a single destructuring assignment for destructuring declarations,
which can be desugared by the bytecode generator. This allows us to
remove destructuring desugaring from the parser (specifically, the
pattern rewriter) entirely.
The pattern "rewriter" is now only responsible for walking the
destructuring pattern to declare variables, mark them assigned, and
potentially rewrite scopes for the edge case of parameters with a sloppy
eval.
Note that since the rewriter is no longer rewriting, we have to flip the
VariableProxy copying logic for var re-lookup, so that we now pass the
new VariableProxy to the variable declaration and leave the original
unresolved (rather than passing the original through and rewriting to a
new unresolved VariableProxy).
This change does have some effect on breakpoint locations, due to some
of the available information changing between the parser and bytecode
generator, however the new locations appear to be more consistent
between assignments and declarations.
Change-Id: I3a58dd0a387d2bfb8e5e9e22dde0acc5f440cb82
Reviewed-on: https://chromium-review.googlesource.com/c/1382462
Commit-Queue: Leszek Swirski <leszeks@chromium.org>
Reviewed-by: Adam Klein <adamk@chromium.org>
Reviewed-by: Ross McIlroy <rmcilroy@chromium.org>
Reviewed-by: Yang Guo <yangguo@chromium.org>
Reviewed-by: Toon Verwaest <verwaest@chromium.org>
Cr-Commit-Position: refs/heads/master@{#58670}
This patch sets the name slot of the private name symbols for
private fields and display the names in error messages of invalid
private field accesses.
TBR: adamk@chromium.org
Bug: v8:8144
Change-Id: Id34c468e2bddd1c3001517b4d447c7497402df76
Reviewed-on: https://chromium-review.googlesource.com/c/1374332
Reviewed-by: Camillo Bruni <cbruni@chromium.org>
Reviewed-by: Igor Sheludko <ishell@chromium.org>
Reviewed-by: Mathias Bynens <mathias@chromium.org>
Reviewed-by: Ulan Degenbaev <ulan@chromium.org>
Reviewed-by: Mythri Alle <mythria@chromium.org>
Reviewed-by: Sathya Gunasekaran <gsathya@chromium.org>
Commit-Queue: Joyee Cheung <joyee@igalia.com>
Cr-Commit-Position: refs/heads/master@{#58601}
Now we just check for each variable declared in the parameter scope whether it
occurs as a lexical variable in the body scope. This way the preparser will
also identify them.
Bug: v8:2728, v8:5064
Change-Id: I9fd96590fa431de0656c85295fd31af9b36f2e32
Reviewed-on: https://chromium-review.googlesource.com/c/1384225
Reviewed-by: Igor Sheludko <ishell@chromium.org>
Commit-Queue: Toon Verwaest <verwaest@chromium.org>
Cr-Commit-Position: refs/heads/master@{#58375}
- Directly declares the special catch variable from the parser-base.
- Tracks Scope on PreParserBlock and finds conflicting lexical declarations by
simply walking the VariableMap of the block inserted for the pattern; or the
catch variable in case of identifier.
- This also enables throwing errors for duplicate let in the preparser. We may
have to back that out if it breaks something.
Bug: v8:2728, v8:7828
Change-Id: Id2eea62062533eb99cd6670c42a4b1da87139008
Reviewed-on: https://chromium-review.googlesource.com/c/1382095
Reviewed-by: Igor Sheludko <ishell@chromium.org>
Commit-Queue: Toon Verwaest <verwaest@chromium.org>
Cr-Commit-Position: refs/heads/master@{#58353}
This patch changes the output from:
function fn() {
^
SyntaxError: Unexpected end of input
to:
function fn() {
^
SyntaxError: missing '}' after function body
Bug: v8:6513, v8:7321
Change-Id: I4ca8a40fa0be246da2a3ff776b3fb3c87b4ba4e0
Also-By: gsathya@chromium.org
Reviewed-on: https://chromium-review.googlesource.com/c/1367448
Commit-Queue: Mathias Bynens <mathias@chromium.org>
Reviewed-by: Marja Hölttä <marja@chromium.org>
Cr-Commit-Position: refs/heads/master@{#58116}
This changes the split from AssignmentPattern and BindingPattern to Pattern and
BindingPattern. Pattern collects all errors that are invalid in both assignment
and binding pattern contexts. Binding pattern additionally collects errors for
binding pattern contexts (property access isn't a valid target). The
distinction is piggybacked on to distinguish assignment vs binding pattern
errors since binding pattern verification will first throw the binding pattern
error.
Since we don't throw pattern error as binding pattern as well, this can mean
that a later binding pattern syntax error will show up before an early pattern
error. Since that just changes the message to another syntax violation, I think
that's fine.
Change-Id: Ib6a22c8d11c49eacc6667ae8ee5e98bababadd43
Reviewed-on: https://chromium-review.googlesource.com/c/1349273
Reviewed-by: Igor Sheludko <ishell@chromium.org>
Commit-Queue: Toon Verwaest <verwaest@chromium.org>
Cr-Commit-Position: refs/heads/master@{#57774}
This removes unused code (macros.py, runtime functions). As IS_VAR is
now unused we can remove support from the parser.
Bug: v8:7624
Change-Id: Ia1c5e23f4c2caa85310d3f9a557218fc52d200f2
Reviewed-on: https://chromium-review.googlesource.com/c/1329696
Reviewed-by: Igor Sheludko <ishell@chromium.org>
Reviewed-by: Sathya Gunasekaran <gsathya@chromium.org>
Commit-Queue: Jakob Gruber <jgruber@chromium.org>
Cr-Commit-Position: refs/heads/master@{#57434}
