When --harmony-async-iteration is enabled, it is now possible to
use the for-await-of loop, which uses the Async Iteration protocol
rather than the ordinary ES6 Iteration protocol.
the Async-from-Sync Iterator object is not implemented in this CL,
and so for-await-of loops will abort execution if the iterated object
does not have a Symbol.asyncIterator() method. Async-from-Sync
Iterators are implemented seperately in https://codereview.chromium.org/2645313003/
BUG=v8:5855, v8:4483
R=neis@chromium.org, littledan@chromium.org, adamk@chromium.org
Review-Url: https://codereview.chromium.org/2637403008
Cr-Commit-Position: refs/heads/master@{#43224}
ParserBase::is_any_identifier currently does not recognise
Token::ESCAPED_STRICT_RESERVED_WORD as an identifier. This seems different
from what ParserBase::ParseIdentifierName does, and also prevents
"l\u0065t", unlike "let", from becoming a label.
This CL extends is_any_identifier to also accept ESCAPED_STRICT_RESERVED_WORD.
BUG=v8:5692
Review-Url: https://codereview.chromium.org/2695973003
Cr-Commit-Position: refs/heads/master@{#43204}
Also make them use the helpers that I introduced recently.
BUG=v8:5636
Review-Url: https://codereview.chromium.org/2684343004
Cr-Commit-Position: refs/heads/master@{#43100}
Move the logic into Scope::DeclareVariable to be more robust.
BUG=v8:5636
Review-Url: https://codereview.chromium.org/2685293003
Cr-Commit-Position: refs/heads/master@{#43098}
E.g.,
{ function lazy_inner(b = somevar) { let somevar; } }
If we don't produce the same scopes, PreParser thinks that the unresolved
variable inside the default parameter resolves into the variable declared inside
the function. Thus, it's not correctly recorded as a free variable.
One part is already done by https://codereview.chromium.org/2638333002 . But at
the laziness boundary, we still produced different scopes.
Unlike previously thought, this is also needed for lazy inner function
correctness, not only for "preparser scope analysis" (ie., skipping inner
functions).
BUG=v8:5938
Change-Id: I047cd43ef16478bb0f18d1f114845e7d1ab8c5f2
Reviewed-on: https://chromium-review.googlesource.com/439345
Commit-Queue: Marja Hölttä <marja@chromium.org>
Commit-Queue: Toon Verwaest <verwaest@chromium.org>
Reviewed-by: Toon Verwaest <verwaest@chromium.org>
Cr-Commit-Position: refs/heads/master@{#43044}
Reason for revert:
False alarm, bot hiccup
Original issue's description:
> Revert of Reland: [Parse] ParseInfo owns the parsing Zone. (patchset #7 id:140001 of https://codereview.chromium.org/2632123006/ )
>
> Reason for revert:
> Speculative revert because of revert needed for https://codereview.chromium.org/2632123006
>
> Original issue's description:
> > Reland: [Parse] ParseInfo owns the parsing Zone.
> >
> > Moves ownership of the parsing Zone to ParseInfo with a shared_ptr. This is
> > in preperation for enabling background compilation jobs for inner functions
> > share the AST in the outer-function's parse zone memory (read-only), with the
> > and zone being released when all compilation jobs have completed.
> >
> > BUG=v8:5203,v8:5215
> >
> > Review-Url: https://codereview.chromium.org/2632123006
> > Cr-Original-Commit-Position: refs/heads/master@{#42993}
> > Committed: 14fb337200
> > Review-Url: https://codereview.chromium.org/2632123006
> > Cr-Commit-Position: refs/heads/master@{#42996}
> > Committed: 9e7d5a6065
>
> TBR=marja@chromium.org,mstarzinger@chromium.org,ahaas@chromium.org,verwaest@chromium.org,rmcilroy@chromium.org
> # Skipping CQ checks because original CL landed less than 1 days ago.
> NOPRESUBMIT=true
> NOTREECHECKS=true
> NOTRY=true
> BUG=v8:5203,v8:5215
>
> Review-Url: https://codereview.chromium.org/2683733002
> Cr-Commit-Position: refs/heads/master@{#43008}
> Committed: 9fe08ec067TBR=marja@chromium.org,mstarzinger@chromium.org,ahaas@chromium.org,verwaest@chromium.org,rmcilroy@chromium.org
# Skipping CQ checks because original CL landed less than 1 days ago.
NOPRESUBMIT=true
NOTREECHECKS=true
NOTRY=true
BUG=v8:5203,v8:5215
Review-Url: https://codereview.chromium.org/2679303003
Cr-Commit-Position: refs/heads/master@{#43015}
Reason for revert:
False alarm, bot hiccup
Original issue's description:
> Revert of [parsing] Fix maybe-assigned for loop variables. (patchset #3 id:40001 of https://codereview.chromium.org/2673403003/ )
>
> Reason for revert:
> Speculative revert because of https://codereview.chromium.org/2679163002/.
>
> Original issue's description:
> > [parsing] Fix maybe-assigned for loop variables.
> >
> > Due to hoisting, the value of a 'var'-declared variable may actually change even
> > if the code contains only the "initial" assignment, namely when that assignment
> > occurs inside a loop. For example:
> >
> > let i = 10;
> > do { var x = i } while (i--):
> >
> > As a simple and very conservative approximation of this, we explicitly mark
> > as maybe-assigned any non-lexical variable whose "declaration" does not
> > syntactically occur in the function scope. (In the example above, it
> > occurs in a block scope.)
> >
> > BUG=v8:5636
> >
> > Review-Url: https://codereview.chromium.org/2673403003
> > Cr-Commit-Position: refs/heads/master@{#42989}
> > Committed: a33fcd663b
>
> TBR=marja@chromium.org,adamk@chromium.org,neis@chromium.org
> # Skipping CQ checks because original CL landed less than 1 days ago.
> NOPRESUBMIT=true
> NOTREECHECKS=true
> NOTRY=true
> BUG=v8:5636
>
> Review-Url: https://codereview.chromium.org/2679263002
> Cr-Commit-Position: refs/heads/master@{#43010}
> Committed: f3ae5ccf57TBR=marja@chromium.org,adamk@chromium.org,neis@chromium.org
# Skipping CQ checks because original CL landed less than 1 days ago.
NOPRESUBMIT=true
NOTREECHECKS=true
NOTRY=true
BUG=v8:5636
Review-Url: https://codereview.chromium.org/2686663002
Cr-Commit-Position: refs/heads/master@{#43013}
Reason for revert:
Speculative revert because of https://codereview.chromium.org/2679163002/.
Original issue's description:
> [parsing] Fix maybe-assigned for loop variables.
>
> Due to hoisting, the value of a 'var'-declared variable may actually change even
> if the code contains only the "initial" assignment, namely when that assignment
> occurs inside a loop. For example:
>
> let i = 10;
> do { var x = i } while (i--):
>
> As a simple and very conservative approximation of this, we explicitly mark
> as maybe-assigned any non-lexical variable whose "declaration" does not
> syntactically occur in the function scope. (In the example above, it
> occurs in a block scope.)
>
> BUG=v8:5636
>
> Review-Url: https://codereview.chromium.org/2673403003
> Cr-Commit-Position: refs/heads/master@{#42989}
> Committed: a33fcd663bTBR=marja@chromium.org,adamk@chromium.org,neis@chromium.org
# Skipping CQ checks because original CL landed less than 1 days ago.
NOPRESUBMIT=true
NOTREECHECKS=true
NOTRY=true
BUG=v8:5636
Review-Url: https://codereview.chromium.org/2679263002
Cr-Commit-Position: refs/heads/master@{#43010}
Reason for revert:
Speculative revert because of revert needed for https://codereview.chromium.org/2632123006
Original issue's description:
> Reland: [Parse] ParseInfo owns the parsing Zone.
>
> Moves ownership of the parsing Zone to ParseInfo with a shared_ptr. This is
> in preperation for enabling background compilation jobs for inner functions
> share the AST in the outer-function's parse zone memory (read-only), with the
> and zone being released when all compilation jobs have completed.
>
> BUG=v8:5203,v8:5215
>
> Review-Url: https://codereview.chromium.org/2632123006
> Cr-Original-Commit-Position: refs/heads/master@{#42993}
> Committed: 14fb337200
> Review-Url: https://codereview.chromium.org/2632123006
> Cr-Commit-Position: refs/heads/master@{#42996}
> Committed: 9e7d5a6065TBR=marja@chromium.org,mstarzinger@chromium.org,ahaas@chromium.org,verwaest@chromium.org,rmcilroy@chromium.org
# Skipping CQ checks because original CL landed less than 1 days ago.
NOPRESUBMIT=true
NOTREECHECKS=true
NOTRY=true
BUG=v8:5203,v8:5215
Review-Url: https://codereview.chromium.org/2683733002
Cr-Commit-Position: refs/heads/master@{#43008}
Cleanup CHECK_EQ order and simplify CHECK_EQ(true/false).
Cleanup callorder for negative numbers
Cleanup callorder order for capital letter constants.
Cleanup callorder for test.x checks.
BUG=
Review-Url: https://codereview.chromium.org/2677183002
Cr-Commit-Position: refs/heads/master@{#42997}
Moves ownership of the parsing Zone to ParseInfo with a shared_ptr. This is
in preperation for enabling background compilation jobs for inner functions
share the AST in the outer-function's parse zone memory (read-only), with the
and zone being released when all compilation jobs have completed.
BUG=v8:5203,v8:5215
Review-Url: https://codereview.chromium.org/2632123006
Cr-Original-Commit-Position: refs/heads/master@{#42993}
Committed: 14fb337200
Review-Url: https://codereview.chromium.org/2632123006
Cr-Commit-Position: refs/heads/master@{#42996}
Reason for revert:
doesn't compile on ToT
Original issue's description:
> Reland: [Parse] ParseInfo owns the parsing Zone.
>
> Moves ownership of the parsing Zone to ParseInfo with a shared_ptr. This is
> in preperation for enabling background compilation jobs for inner functions
> share the AST in the outer-function's parse zone memory (read-only), with the
> and zone being released when all compilation jobs have completed.
>
> BUG=v8:5203,v8:5215
>
> Review-Url: https://codereview.chromium.org/2632123006
> Cr-Commit-Position: refs/heads/master@{#42993}
> Committed: 14fb337200TBR=marja@chromium.org,mstarzinger@chromium.org,ahaas@chromium.org,verwaest@chromium.org,rmcilroy@chromium.org
# Skipping CQ checks because original CL landed less than 1 days ago.
NOPRESUBMIT=true
NOTREECHECKS=true
NOTRY=true
BUG=v8:5203,v8:5215
Review-Url: https://codereview.chromium.org/2685543003
Cr-Commit-Position: refs/heads/master@{#42994}
Moves ownership of the parsing Zone to ParseInfo with a shared_ptr. This is
in preperation for enabling background compilation jobs for inner functions
share the AST in the outer-function's parse zone memory (read-only), with the
and zone being released when all compilation jobs have completed.
BUG=v8:5203,v8:5215
Review-Url: https://codereview.chromium.org/2632123006
Cr-Commit-Position: refs/heads/master@{#42993}
Due to hoisting, the value of a 'var'-declared variable may actually change even
if the code contains only the "initial" assignment, namely when that assignment
occurs inside a loop. For example:
let i = 10;
do { var x = i } while (i--):
As a simple and very conservative approximation of this, we explicitly mark
as maybe-assigned any non-lexical variable whose "declaration" does not
syntactically occur in the function scope. (In the example above, it
occurs in a block scope.)
BUG=v8:5636
Review-Url: https://codereview.chromium.org/2673403003
Cr-Commit-Position: refs/heads/master@{#42989}
Turns out is_hidden is not the right condition for "scope should be present in
the preparse data". For now, replaced it with "is hidden leaf scope" (i.e.,
doesn't contain any non-hidden scopes). That's probably not the right condition
either; will be fixed once there's more data to decide what the right condition
is.
BUG=v8:5516
R=vogelheim@chromium.org
Review-Url: https://codereview.chromium.org/2669163002
Cr-Commit-Position: refs/heads/master@{#42909}
Throw a syntax error on "new import(1)" expression. Adds a new error msg as well.
BUG=v8:5785
Review-Url: https://codereview.chromium.org/2661113002
Cr-Commit-Position: refs/heads/master@{#42827}
If hidden scopes are ignored, the scopes and variable produced by the PreParser
already matched the scopes and variables produced by the Parser.
BUG=v8:5516
R=vogelheim@chromium.org
Review-Url: https://codereview.chromium.org/2663043003
Cr-Commit-Position: refs/heads/master@{#42824}
Rewrites import expression into a runtime call. Uses peekahead to
determine if parsing an import declaration or import expression.
The runtime call doesn't actually do the import yet, will be added in
follow on patch.
Adds a new --harmony-dynamic-import flag.
Adds a ignore_error_msg parameter to the test runner to ignore the
discrepancy in the error messages while parsing import expression with
parser and pre parser. This discrepancy will actually never happen in
real code.
BUG=v8:5785
Review-Url: https://codereview.chromium.org/2661933003
Cr-Commit-Position: refs/heads/master@{#42820}
This unifies the behavior of Scope::DeclareVariableName with
Scope::DeclareVariable.
BUG=v8:5516
Review-Url: https://codereview.chromium.org/2658063005
Cr-Commit-Position: refs/heads/master@{#42744}
- Declaring a variable called "this" for preparsed functions was unnecessary;
DeclarationScope ctor already adds the variable.
- "arguments" for preparsed scopes need to be declared after parsing the
function, like it's done in the parser.
- Now arguments_ can be the dummy variable, so adapted code to it.
- A previous refactoring CL ( https://codereview.chromium.org/2638333002 ) was
incomplete; it had added ParserBase::ParseFunctionBody but
PreParser::ParseFunction didn't call it. This CL completes that work. This is
needed for getting "arguments" declared properly for preparsed functions.
- AllocateVariablesRecursively is already called for preparsed scopes (without
this CL, that is), and it bails out early. However, before the bailout it used
to dcheck num_stack_slots_ == 0; that is no longer true since we've done scope
analysis for preparsed scopes.
- Test fix: we cannot have any lazy inner functions in the test, except the
topmost lazy inner function. Such functions would also be lazy in the parser
case, and the parser would just throw away their variables. Then the test
tries to verify the preparsed data against the scopes without variables and fails.
- Disabled a test w/ a sloppy block function, will get that working again in the
upcoming CLs.
BUG=v8:5516
Review-Url: https://codereview.chromium.org/2655623005
Cr-Commit-Position: refs/heads/master@{#42685}
The data produced at the moment only contains information about scope type +
positions, and only the most trivial tests pass.
Upcoming CLs will extend the data to contain information about variables (once
PreParser can produce it) and add more test cases.
BUG=v8:5516
Review-Url: https://codereview.chromium.org/2650703003
Cr-Commit-Position: refs/heads/master@{#42656}
Speculative reason for issue 684481.
BUG=chromium:684481
TBR=marja@chromium.org,mstarzinger@chromium.org,ahaas@chromium.org,verwaest@chromium.org,
Original issue's description:
> [Parse] ParseInfo owns the parsing Zone.
>
> Moves ownership of the parsing Zone to ParseInfo with a shared_ptr. This is
> in preperation for enabling background compilation jobs for inner functions
> share the AST in the outer-function's parse zone memory (read-only), with the
> and zone being released when all compilation jobs have completed.
>
> BUG=v8:5203, v8:5215
> Review-Url: https://codereview.chromium.org/2632123006
> Cr-Commit-Position: refs/heads/master@{#42562}
> Committed: 4b0101d369
Review-Url: https://codereview.chromium.org/2648383005
Cr-Commit-Position: refs/heads/master@{#42633}
The "sloppy eval in default param" cases will be useful for the future
tests which assert that parser and preparser produce the same scopes.
BUG=v8:5501, v8:5516
Review-Url: https://codereview.chromium.org/2644333002
Cr-Commit-Position: refs/heads/master@{#42625}
Check that number of properties < Code:kMaxArguments when object
destructuring with a rest property otherwise throw an error.
BUG=v8:5549
Review-Url: https://codereview.chromium.org/2650863002
Cr-Commit-Position: refs/heads/master@{#42613}
Moves ownership of the parsing Zone to ParseInfo with a shared_ptr. This is
in preperation for enabling background compilation jobs for inner functions
share the AST in the outer-function's parse zone memory (read-only), with the
and zone being released when all compilation jobs have completed.
BUG=v8:5203,v8:5215
Review-Url: https://codereview.chromium.org/2632123006
Cr-Original-Commit-Position: refs/heads/master@{#42539}
Committed: 839b06b64f
Review-Url: https://codereview.chromium.org/2632123006
Cr-Commit-Position: refs/heads/master@{#42562}
Reason for revert:
Crashes on Windows in:
CompilerDispatcherJobTest.CompileFailureToFinalize
CompilerDispatcherJobTest.ScopeChain
Original issue's description:
> [Parse] ParseInfo owns the parsing Zone.
>
> Moves ownership of the parsing Zone to ParseInfo with a shared_ptr. This is
> in preperation for enabling background compilation jobs for inner functions
> share the AST in the outer-function's parse zone memory (read-only), with the
> and zone being released when all compilation jobs have completed.
>
> BUG=v8:5203,v8:5215
>
> Review-Url: https://codereview.chromium.org/2632123006
> Cr-Commit-Position: refs/heads/master@{#42539}
> Committed: 839b06b64fTBR=marja@chromium.org,mstarzinger@chromium.org,ahaas@chromium.org,verwaest@chromium.org
# Skipping CQ checks because original CL landed less than 1 days ago.
NOPRESUBMIT=true
NOTREECHECKS=true
NOTRY=true
BUG=v8:5203,v8:5215
Review-Url: https://codereview.chromium.org/2645613008
Cr-Commit-Position: refs/heads/master@{#42542}
Moves ownership of the parsing Zone to ParseInfo with a shared_ptr. This is
in preperation for enabling background compilation jobs for inner functions
share the AST in the outer-function's parse zone memory (read-only), with the
and zone being released when all compilation jobs have completed.
BUG=v8:5203,v8:5215
Review-Url: https://codereview.chromium.org/2632123006
Cr-Commit-Position: refs/heads/master@{#42539}
This rewrites the rest property into a runtime call which sets up the
correct properties in the newly created object.
- Changes flag to --harmony-object-rest-spread
- Changes pattern rewriter to desugar rest property
- Adds new runtime function CopyDataPropertiesWithExcludedProperties
BUG=v8:5549
Review-Url: https://codereview.chromium.org/2620943002
Cr-Commit-Position: refs/heads/master@{#42430}
Reduce duplication of the inner function declaration + now we get the
test for inner arrow functions for free (if we later implement lazy
inner arrow functions).
BUG=v8:5501, v8:5516
Review-Url: https://codereview.chromium.org/2637003005
Cr-Commit-Position: refs/heads/master@{#42412}
Creates an AstStringConstants container which pre-initializes the
string constants used by AstValueFactory. This ensures that all
AstValueFactories will produce the same AstValue objects for constants,
and so they can be used by the BytecodeGenerator without having to pass
the AstValueFactory to it, enabling construction off-thread.
BUG=v8:5203
Review-Url: https://codereview.chromium.org/2630343002
Cr-Original-Commit-Position: refs/heads/master@{#42381}
Committed: d611496b8e
Review-Url: https://codereview.chromium.org/2630343002
Cr-Commit-Position: refs/heads/master@{#42394}
Reason for revert:
Seems to break modules-namespace2 on gcstress.
Original issue's description:
> [Parser] Introduce AstStringConstants to share constants across AstValueFactory
>
> Creates an AstStringConstants container which pre-initializes the
> string constants used by AstValueFactory. This ensures that all
> AstValueFactories will produce the same AstValue objects for constants,
> and so they can be used by the BytecodeGenerator without having to pass
> the AstValueFactory to it, enabling construction off-thread.
>
> BUG=v8:5203
>
> Review-Url: https://codereview.chromium.org/2630343002
> Cr-Commit-Position: refs/heads/master@{#42381}
> Committed: d611496b8eTBR=ahaas@chromium.org,marja@chromium.org
# Skipping CQ checks because original CL landed less than 1 days ago.
NOPRESUBMIT=true
NOTREECHECKS=true
NOTRY=true
BUG=v8:5203
Review-Url: https://codereview.chromium.org/2638783002
Cr-Commit-Position: refs/heads/master@{#42382}
Creates an AstStringConstants container which pre-initializes the
string constants used by AstValueFactory. This ensures that all
AstValueFactories will produce the same AstValue objects for constants,
and so they can be used by the BytecodeGenerator without having to pass
the AstValueFactory to it, enabling construction off-thread.
BUG=v8:5203
Review-Url: https://codereview.chromium.org/2630343002
Cr-Commit-Position: refs/heads/master@{#42381}
- Generalize the sloppy block function data structures to allow
PreParser adding and hoisting sloppy block funcs.
- This completes PreParser scope analysis.
BUG=v8:5501, v8:5516
R=verwaest@chromium.org
Review-Url: https://codereview.chromium.org/2636543002
Cr-Commit-Position: refs/heads/master@{#42368}
Now we have declarations too, so it doesn't matter whether preparser
produces the same unresolved variables as the parser.
BUG=v8:5501, v8:5516
R=verwaest@chromium.org
Review-Url: https://codereview.chromium.org/2623583004
Cr-Commit-Position: refs/heads/master@{#42174}
This adds tracking the following:
- Let / var declarations in for loops
BUG=v8:5501, v8:5516
Review-Url: https://codereview.chromium.org/2616393002
Cr-Commit-Position: refs/heads/master@{#42169}
Downside: this adds all kinds of weird includes in the .cc files.
(See design doc linked in the bug.)
BUG=v8:5402
Review-Url: https://codereview.chromium.org/2622503002
Cr-Commit-Position: refs/heads/master@{#42140}
This adds tracking the following:
- Declarations created by catch (potentially destructuring)
- Declarations created by for-each (potentially destructuring)
- Class declarations
BUG=v8:5501, v8:5516
Review-Url: https://codereview.chromium.org/2617923003
Cr-Commit-Position: refs/heads/master@{#42129}
