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Created
Sun, Oct 13, 23:16
Size
19 KB
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text/x-c++
Expires
Tue, Oct 15, 23:16 (1 d, 21 h)
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blob
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Raw Data
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21630641
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rOACCT Open Access Compliance Check Tool (OACCT)
index.js
View Options
"use strict"
;
Object
.
defineProperty
(
exports
,
"__esModule"
,
{
value
:
true
});
exports
.
default
=
void
0
;
var
_helperPluginUtils
=
require
(
"@babel/helper-plugin-utils"
);
var
_tdz
=
require
(
"./tdz"
);
var
_core
=
require
(
"@babel/core"
);
const
DONE
=
new
WeakSet
();
var
_default
=
(
0
,
_helperPluginUtils
.
declare
)((
api
,
opts
)
=>
{
api
.
assertVersion
(
7
);
const
{
throwIfClosureRequired
=
false
,
tdz
:
tdzEnabled
=
false
}
=
opts
;
if
(
typeof
throwIfClosureRequired
!==
"boolean"
)
{
throw
new
Error
(
`
.
throwIfClosureRequired
must
be
a
boolean
,
or
undefined
`
);
}
if
(
typeof
tdzEnabled
!==
"boolean"
)
{
throw
new
Error
(
`
.
tdz
must
be
a
boolean
,
or
undefined
`
);
}
return
{
name
:
"transform-block-scoping"
,
visitor
:
{
VariableDeclaration
(
path
)
{
const
{
node
,
parent
,
scope
}
=
path
;
if
(
!
isBlockScoped
(
node
))
return
;
convertBlockScopedToVar
(
path
,
null
,
parent
,
scope
,
true
);
if
(
node
.
_tdzThis
)
{
const
nodes
=
[
node
];
for
(
let
i
=
0
;
i
<
node
.
declarations
.
length
;
i
++
)
{
const
decl
=
node
.
declarations
[
i
];
const
assign
=
_core
.
types
.
assignmentExpression
(
"="
,
_core
.
types
.
cloneNode
(
decl
.
id
),
decl
.
init
||
scope
.
buildUndefinedNode
());
assign
.
_ignoreBlockScopingTDZ
=
true
;
nodes
.
push
(
_core
.
types
.
expressionStatement
(
assign
));
decl
.
init
=
this
.
addHelper
(
"temporalUndefined"
);
}
node
.
_blockHoist
=
2
;
if
(
path
.
isCompletionRecord
())
{
nodes
.
push
(
_core
.
types
.
expressionStatement
(
scope
.
buildUndefinedNode
()));
}
path
.
replaceWithMultiple
(
nodes
);
}
},
Loop
(
path
,
state
)
{
const
{
parent
,
scope
}
=
path
;
path
.
ensureBlock
();
const
blockScoping
=
new
BlockScoping
(
path
,
path
.
get
(
"body"
),
parent
,
scope
,
throwIfClosureRequired
,
tdzEnabled
,
state
);
const
replace
=
blockScoping
.
run
();
if
(
replace
)
path
.
replaceWith
(
replace
);
},
CatchClause
(
path
,
state
)
{
const
{
parent
,
scope
}
=
path
;
const
blockScoping
=
new
BlockScoping
(
null
,
path
.
get
(
"body"
),
parent
,
scope
,
throwIfClosureRequired
,
tdzEnabled
,
state
);
blockScoping
.
run
();
},
"BlockStatement|SwitchStatement|Program"
(
path
,
state
)
{
if
(
!
ignoreBlock
(
path
))
{
const
blockScoping
=
new
BlockScoping
(
null
,
path
,
path
.
parent
,
path
.
scope
,
throwIfClosureRequired
,
tdzEnabled
,
state
);
blockScoping
.
run
();
}
}
}
};
});
exports
.
default
=
_default
;
function
ignoreBlock
(
path
)
{
return
_core
.
types
.
isLoop
(
path
.
parent
)
||
_core
.
types
.
isCatchClause
(
path
.
parent
);
}
const
buildRetCheck
=
(
0
,
_core
.
template
)(
`
if
(
typeof
RETURN
===
"object"
)
return
RETURN
.
v
;
`
);
function
isBlockScoped
(
node
)
{
if
(
!
_core
.
types
.
isVariableDeclaration
(
node
))
return
false
;
if
(
node
[
_core
.
types
.
BLOCK_SCOPED_SYMBOL
])
return
true
;
if
(
node
.
kind
!==
"let"
&&
node
.
kind
!==
"const"
)
return
false
;
return
true
;
}
function
isInLoop
(
path
)
{
const
loopOrFunctionParent
=
path
.
find
(
path
=>
path
.
isLoop
()
||
path
.
isFunction
());
return
loopOrFunctionParent
==
null
?
void
0
:
loopOrFunctionParent
.
isLoop
();
}
function
convertBlockScopedToVar
(
path
,
node
,
parent
,
scope
,
moveBindingsToParent
=
false
)
{
if
(
!
node
)
{
node
=
path
.
node
;
}
if
(
isInLoop
(
path
)
&&
!
_core
.
types
.
isFor
(
parent
))
{
for
(
let
i
=
0
;
i
<
node
.
declarations
.
length
;
i
++
)
{
const
declar
=
node
.
declarations
[
i
];
declar
.
init
=
declar
.
init
||
scope
.
buildUndefinedNode
();
}
}
node
[
_core
.
types
.
BLOCK_SCOPED_SYMBOL
]
=
true
;
node
.
kind
=
"var"
;
if
(
moveBindingsToParent
)
{
const
parentScope
=
scope
.
getFunctionParent
()
||
scope
.
getProgramParent
();
for
(
const
name
of
Object
.
keys
(
path
.
getBindingIdentifiers
()))
{
const
binding
=
scope
.
getOwnBinding
(
name
);
if
(
binding
)
binding
.
kind
=
"var"
;
scope
.
moveBindingTo
(
name
,
parentScope
);
}
}
}
function
isVar
(
node
)
{
return
_core
.
types
.
isVariableDeclaration
(
node
,
{
kind
:
"var"
})
&&
!
isBlockScoped
(
node
);
}
const
letReferenceBlockVisitor
=
_core
.
traverse
.
visitors
.
merge
([{
Loop
:
{
enter
(
path
,
state
)
{
state
.
loopDepth
++
;
},
exit
(
path
,
state
)
{
state
.
loopDepth
--
;
}
},
Function
(
path
,
state
)
{
if
(
state
.
loopDepth
>
0
)
{
path
.
traverse
(
letReferenceFunctionVisitor
,
state
);
}
else
{
path
.
traverse
(
_tdz
.
visitor
,
state
);
}
return
path
.
skip
();
}
},
_tdz
.
visitor
]);
const
letReferenceFunctionVisitor
=
_core
.
traverse
.
visitors
.
merge
([{
ReferencedIdentifier
(
path
,
state
)
{
const
ref
=
state
.
letReferences
.
get
(
path
.
node
.
name
);
if
(
!
ref
)
return
;
const
localBinding
=
path
.
scope
.
getBindingIdentifier
(
path
.
node
.
name
);
if
(
localBinding
&&
localBinding
!==
ref
)
return
;
state
.
closurify
=
true
;
}
},
_tdz
.
visitor
]);
const
hoistVarDeclarationsVisitor
=
{
enter
(
path
,
self
)
{
const
{
node
,
parent
}
=
path
;
if
(
path
.
isForStatement
())
{
if
(
isVar
(
node
.
init
,
node
))
{
const
nodes
=
self
.
pushDeclar
(
node
.
init
);
if
(
nodes
.
length
===
1
)
{
node
.
init
=
nodes
[
0
];
}
else
{
node
.
init
=
_core
.
types
.
sequenceExpression
(
nodes
);
}
}
}
else
if
(
path
.
isFor
())
{
if
(
isVar
(
node
.
left
,
node
))
{
self
.
pushDeclar
(
node
.
left
);
node
.
left
=
node
.
left
.
declarations
[
0
].
id
;
}
}
else
if
(
isVar
(
node
,
parent
))
{
path
.
replaceWithMultiple
(
self
.
pushDeclar
(
node
).
map
(
expr
=>
_core
.
types
.
expressionStatement
(
expr
)));
}
else
if
(
path
.
isFunction
())
{
return
path
.
skip
();
}
}
};
const
loopLabelVisitor
=
{
LabeledStatement
({
node
},
state
)
{
state
.
innerLabels
.
push
(
node
.
label
.
name
);
}
};
const
continuationVisitor
=
{
enter
(
path
,
state
)
{
if
(
path
.
isAssignmentExpression
()
||
path
.
isUpdateExpression
())
{
for
(
const
name
of
Object
.
keys
(
path
.
getBindingIdentifiers
()))
{
if
(
state
.
outsideReferences
.
get
(
name
)
!==
path
.
scope
.
getBindingIdentifier
(
name
))
{
continue
;
}
state
.
reassignments
[
name
]
=
true
;
}
}
else
if
(
path
.
isReturnStatement
())
{
state
.
returnStatements
.
push
(
path
);
}
}
};
function
loopNodeTo
(
node
)
{
if
(
_core
.
types
.
isBreakStatement
(
node
))
{
return
"break"
;
}
else
if
(
_core
.
types
.
isContinueStatement
(
node
))
{
return
"continue"
;
}
}
const
loopVisitor
=
{
Loop
(
path
,
state
)
{
const
oldIgnoreLabeless
=
state
.
ignoreLabeless
;
state
.
ignoreLabeless
=
true
;
path
.
traverse
(
loopVisitor
,
state
);
state
.
ignoreLabeless
=
oldIgnoreLabeless
;
path
.
skip
();
},
Function
(
path
)
{
path
.
skip
();
},
SwitchCase
(
path
,
state
)
{
const
oldInSwitchCase
=
state
.
inSwitchCase
;
state
.
inSwitchCase
=
true
;
path
.
traverse
(
loopVisitor
,
state
);
state
.
inSwitchCase
=
oldInSwitchCase
;
path
.
skip
();
},
"BreakStatement|ContinueStatement|ReturnStatement"
(
path
,
state
)
{
const
{
node
,
scope
}
=
path
;
if
(
node
[
this
.
LOOP_IGNORE
])
return
;
let
replace
;
let
loopText
=
loopNodeTo
(
node
);
if
(
loopText
)
{
if
(
node
.
label
)
{
if
(
state
.
innerLabels
.
indexOf
(
node
.
label
.
name
)
>=
0
)
{
return
;
}
loopText
=
`
$
{
loopText
}
|
$
{
node
.
label
.
name
}
`
;
}
else
{
if
(
state
.
ignoreLabeless
)
return
;
if
(
_core
.
types
.
isBreakStatement
(
node
)
&&
state
.
inSwitchCase
)
return
;
}
state
.
hasBreakContinue
=
true
;
state
.
map
[
loopText
]
=
node
;
replace
=
_core
.
types
.
stringLiteral
(
loopText
);
}
if
(
path
.
isReturnStatement
())
{
state
.
hasReturn
=
true
;
replace
=
_core
.
types
.
objectExpression
([
_core
.
types
.
objectProperty
(
_core
.
types
.
identifier
(
"v"
),
node
.
argument
||
scope
.
buildUndefinedNode
())]);
}
if
(
replace
)
{
replace
=
_core
.
types
.
returnStatement
(
replace
);
replace
[
this
.
LOOP_IGNORE
]
=
true
;
path
.
skip
();
path
.
replaceWith
(
_core
.
types
.
inherits
(
replace
,
node
));
}
}
};
class
BlockScoping
{
constructor
(
loopPath
,
blockPath
,
parent
,
scope
,
throwIfClosureRequired
,
tdzEnabled
,
state
)
{
this
.
parent
=
parent
;
this
.
scope
=
scope
;
this
.
state
=
state
;
this
.
throwIfClosureRequired
=
throwIfClosureRequired
;
this
.
tdzEnabled
=
tdzEnabled
;
this
.
blockPath
=
blockPath
;
this
.
block
=
blockPath
.
node
;
this
.
outsideLetReferences
=
new
Map
();
this
.
hasLetReferences
=
false
;
this
.
letReferences
=
new
Map
();
this
.
body
=
[];
if
(
loopPath
)
{
this
.
loopParent
=
loopPath
.
parent
;
this
.
loopLabel
=
_core
.
types
.
isLabeledStatement
(
this
.
loopParent
)
&&
this
.
loopParent
.
label
;
this
.
loopPath
=
loopPath
;
this
.
loop
=
loopPath
.
node
;
}
}
run
()
{
const
block
=
this
.
block
;
if
(
DONE
.
has
(
block
))
return
;
DONE
.
add
(
block
);
const
needsClosure
=
this
.
getLetReferences
();
this
.
checkConstants
();
if
(
_core
.
types
.
isFunction
(
this
.
parent
)
||
_core
.
types
.
isProgram
(
this
.
block
))
{
this
.
updateScopeInfo
();
return
;
}
if
(
!
this
.
hasLetReferences
)
return
;
if
(
needsClosure
)
{
this
.
wrapClosure
();
}
else
{
this
.
remap
();
}
this
.
updateScopeInfo
(
needsClosure
);
if
(
this
.
loopLabel
&&
!
_core
.
types
.
isLabeledStatement
(
this
.
loopParent
))
{
return
_core
.
types
.
labeledStatement
(
this
.
loopLabel
,
this
.
loop
);
}
}
checkConstants
()
{
const
scope
=
this
.
scope
;
const
state
=
this
.
state
;
for
(
const
name
of
Object
.
keys
(
scope
.
bindings
))
{
const
binding
=
scope
.
bindings
[
name
];
if
(
binding
.
kind
!==
"const"
)
continue
;
for
(
const
violation
of
binding
.
constantViolations
)
{
const
readOnlyError
=
state
.
addHelper
(
"readOnlyError"
);
const
throwNode
=
_core
.
types
.
callExpression
(
readOnlyError
,
[
_core
.
types
.
stringLiteral
(
name
)]);
if
(
violation
.
isAssignmentExpression
())
{
violation
.
get
(
"right"
).
replaceWith
(
_core
.
types
.
sequenceExpression
([
throwNode
,
violation
.
get
(
"right"
).
node
]));
}
else
if
(
violation
.
isUpdateExpression
())
{
violation
.
replaceWith
(
_core
.
types
.
sequenceExpression
([
throwNode
,
violation
.
node
]));
}
else
if
(
violation
.
isForXStatement
())
{
violation
.
ensureBlock
();
violation
.
node
.
body
.
body
.
unshift
(
_core
.
types
.
expressionStatement
(
throwNode
));
}
}
}
}
updateScopeInfo
(
wrappedInClosure
)
{
const
blockScope
=
this
.
blockPath
.
scope
;
const
parentScope
=
blockScope
.
getFunctionParent
()
||
blockScope
.
getProgramParent
();
const
letRefs
=
this
.
letReferences
;
for
(
const
key
of
letRefs
.
keys
())
{
const
ref
=
letRefs
.
get
(
key
);
const
binding
=
blockScope
.
getBinding
(
ref
.
name
);
if
(
!
binding
)
continue
;
if
(
binding
.
kind
===
"let"
||
binding
.
kind
===
"const"
)
{
binding
.
kind
=
"var"
;
if
(
wrappedInClosure
)
{
if
(
blockScope
.
hasOwnBinding
(
ref
.
name
))
{
blockScope
.
removeBinding
(
ref
.
name
);
}
}
else
{
blockScope
.
moveBindingTo
(
ref
.
name
,
parentScope
);
}
}
}
}
remap
()
{
const
letRefs
=
this
.
letReferences
;
const
outsideLetRefs
=
this
.
outsideLetReferences
;
const
scope
=
this
.
scope
;
const
blockPathScope
=
this
.
blockPath
.
scope
;
for
(
const
key
of
letRefs
.
keys
())
{
const
ref
=
letRefs
.
get
(
key
);
if
(
scope
.
parentHasBinding
(
key
)
||
scope
.
hasGlobal
(
key
))
{
const
binding
=
scope
.
getOwnBinding
(
key
);
if
(
binding
)
{
const
parentBinding
=
scope
.
parent
.
getOwnBinding
(
key
);
if
(
binding
.
kind
===
"hoisted"
&&
(
!
parentBinding
||
isVar
(
parentBinding
.
path
.
parent
)))
{
continue
;
}
scope
.
rename
(
ref
.
name
);
}
if
(
blockPathScope
.
hasOwnBinding
(
key
))
{
blockPathScope
.
rename
(
ref
.
name
);
}
}
}
for
(
const
key
of
outsideLetRefs
.
keys
())
{
const
ref
=
letRefs
.
get
(
key
);
if
(
isInLoop
(
this
.
blockPath
)
&&
blockPathScope
.
hasOwnBinding
(
key
))
{
blockPathScope
.
rename
(
ref
.
name
);
}
}
}
wrapClosure
()
{
if
(
this
.
throwIfClosureRequired
)
{
throw
this
.
blockPath
.
buildCodeFrameError
(
"Compiling let/const in this block would add a closure "
+
"(throwIfClosureRequired)."
);
}
const
block
=
this
.
block
;
const
outsideRefs
=
this
.
outsideLetReferences
;
if
(
this
.
loop
)
{
for
(
const
name
of
Array
.
from
(
outsideRefs
.
keys
()))
{
const
id
=
outsideRefs
.
get
(
name
);
if
(
this
.
scope
.
hasGlobal
(
id
.
name
)
||
this
.
scope
.
parentHasBinding
(
id
.
name
))
{
outsideRefs
.
delete
(
id
.
name
);
this
.
letReferences
.
delete
(
id
.
name
);
this
.
scope
.
rename
(
id
.
name
);
this
.
letReferences
.
set
(
id
.
name
,
id
);
outsideRefs
.
set
(
id
.
name
,
id
);
}
}
}
this
.
has
=
this
.
checkLoop
();
this
.
hoistVarDeclarations
();
const
args
=
Array
.
from
(
outsideRefs
.
values
(),
node
=>
_core
.
types
.
cloneNode
(
node
));
const
params
=
args
.
map
(
id
=>
_core
.
types
.
cloneNode
(
id
));
const
isSwitch
=
this
.
blockPath
.
isSwitchStatement
();
const
fn
=
_core
.
types
.
functionExpression
(
null
,
params
,
_core
.
types
.
blockStatement
(
isSwitch
?
[
block
]
:
block
.
body
));
this
.
addContinuations
(
fn
);
let
call
=
_core
.
types
.
callExpression
(
_core
.
types
.
nullLiteral
(),
args
);
let
basePath
=
".callee"
;
const
hasYield
=
_core
.
traverse
.
hasType
(
fn
.
body
,
"YieldExpression"
,
_core
.
types
.
FUNCTION_TYPES
);
if
(
hasYield
)
{
fn
.
generator
=
true
;
call
=
_core
.
types
.
yieldExpression
(
call
,
true
);
basePath
=
".argument"
+
basePath
;
}
const
hasAsync
=
_core
.
traverse
.
hasType
(
fn
.
body
,
"AwaitExpression"
,
_core
.
types
.
FUNCTION_TYPES
);
if
(
hasAsync
)
{
fn
.
async
=
true
;
call
=
_core
.
types
.
awaitExpression
(
call
);
basePath
=
".argument"
+
basePath
;
}
let
placeholderPath
;
let
index
;
if
(
this
.
has
.
hasReturn
||
this
.
has
.
hasBreakContinue
)
{
const
ret
=
this
.
scope
.
generateUid
(
"ret"
);
this
.
body
.
push
(
_core
.
types
.
variableDeclaration
(
"var"
,
[
_core
.
types
.
variableDeclarator
(
_core
.
types
.
identifier
(
ret
),
call
)]));
placeholderPath
=
"declarations.0.init"
+
basePath
;
index
=
this
.
body
.
length
-
1
;
this
.
buildHas
(
ret
);
}
else
{
this
.
body
.
push
(
_core
.
types
.
expressionStatement
(
call
));
placeholderPath
=
"expression"
+
basePath
;
index
=
this
.
body
.
length
-
1
;
}
let
callPath
;
if
(
isSwitch
)
{
const
{
parentPath
,
listKey
,
key
}
=
this
.
blockPath
;
this
.
blockPath
.
replaceWithMultiple
(
this
.
body
);
callPath
=
parentPath
.
get
(
listKey
)[
key
+
index
];
}
else
{
block
.
body
=
this
.
body
;
callPath
=
this
.
blockPath
.
get
(
"body"
)[
index
];
}
const
placeholder
=
callPath
.
get
(
placeholderPath
);
let
fnPath
;
if
(
this
.
loop
)
{
const
loopId
=
this
.
scope
.
generateUid
(
"loop"
);
const
p
=
this
.
loopPath
.
insertBefore
(
_core
.
types
.
variableDeclaration
(
"var"
,
[
_core
.
types
.
variableDeclarator
(
_core
.
types
.
identifier
(
loopId
),
fn
)]));
placeholder
.
replaceWith
(
_core
.
types
.
identifier
(
loopId
));
fnPath
=
p
[
0
].
get
(
"declarations.0.init"
);
}
else
{
placeholder
.
replaceWith
(
fn
);
fnPath
=
placeholder
;
}
fnPath
.
unwrapFunctionEnvironment
();
}
addContinuations
(
fn
)
{
const
state
=
{
reassignments
:
{},
returnStatements
:
[],
outsideReferences
:
this
.
outsideLetReferences
};
this
.
scope
.
traverse
(
fn
,
continuationVisitor
,
state
);
for
(
let
i
=
0
;
i
<
fn
.
params
.
length
;
i
++
)
{
const
param
=
fn
.
params
[
i
];
if
(
!
state
.
reassignments
[
param
.
name
])
continue
;
const
paramName
=
param
.
name
;
const
newParamName
=
this
.
scope
.
generateUid
(
param
.
name
);
fn
.
params
[
i
]
=
_core
.
types
.
identifier
(
newParamName
);
this
.
scope
.
rename
(
paramName
,
newParamName
,
fn
);
state
.
returnStatements
.
forEach
(
returnStatement
=>
{
returnStatement
.
insertBefore
(
_core
.
types
.
expressionStatement
(
_core
.
types
.
assignmentExpression
(
"="
,
_core
.
types
.
identifier
(
paramName
),
_core
.
types
.
identifier
(
newParamName
))));
});
fn
.
body
.
body
.
push
(
_core
.
types
.
expressionStatement
(
_core
.
types
.
assignmentExpression
(
"="
,
_core
.
types
.
identifier
(
paramName
),
_core
.
types
.
identifier
(
newParamName
))));
}
}
getLetReferences
()
{
const
block
=
this
.
block
;
let
declarators
=
[];
if
(
this
.
loop
)
{
const
init
=
this
.
loop
.
left
||
this
.
loop
.
init
;
if
(
isBlockScoped
(
init
))
{
declarators
.
push
(
init
);
const
names
=
_core
.
types
.
getBindingIdentifiers
(
init
);
for
(
const
name
of
Object
.
keys
(
names
))
{
this
.
outsideLetReferences
.
set
(
name
,
names
[
name
]);
}
}
}
const
addDeclarationsFromChild
=
(
path
,
node
)
=>
{
node
=
node
||
path
.
node
;
if
(
_core
.
types
.
isClassDeclaration
(
node
)
||
_core
.
types
.
isFunctionDeclaration
(
node
)
||
isBlockScoped
(
node
))
{
if
(
isBlockScoped
(
node
))
{
convertBlockScopedToVar
(
path
,
node
,
block
,
this
.
scope
);
}
declarators
=
declarators
.
concat
(
node
.
declarations
||
node
);
}
if
(
_core
.
types
.
isLabeledStatement
(
node
))
{
addDeclarationsFromChild
(
path
.
get
(
"body"
),
node
.
body
);
}
};
if
(
block
.
body
)
{
const
declarPaths
=
this
.
blockPath
.
get
(
"body"
);
for
(
let
i
=
0
;
i
<
block
.
body
.
length
;
i
++
)
{
addDeclarationsFromChild
(
declarPaths
[
i
]);
}
}
if
(
block
.
cases
)
{
const
declarPaths
=
this
.
blockPath
.
get
(
"cases"
);
for
(
let
i
=
0
;
i
<
block
.
cases
.
length
;
i
++
)
{
const
consequents
=
block
.
cases
[
i
].
consequent
;
for
(
let
j
=
0
;
j
<
consequents
.
length
;
j
++
)
{
const
declar
=
consequents
[
j
];
addDeclarationsFromChild
(
declarPaths
[
i
],
declar
);
}
}
}
for
(
let
i
=
0
;
i
<
declarators
.
length
;
i
++
)
{
const
declar
=
declarators
[
i
];
const
keys
=
_core
.
types
.
getBindingIdentifiers
(
declar
,
false
,
true
);
for
(
const
key
of
Object
.
keys
(
keys
))
{
this
.
letReferences
.
set
(
key
,
keys
[
key
]);
}
this
.
hasLetReferences
=
true
;
}
if
(
!
this
.
hasLetReferences
)
return
;
const
state
=
{
letReferences
:
this
.
letReferences
,
closurify
:
false
,
loopDepth
:
0
,
tdzEnabled
:
this
.
tdzEnabled
,
addHelper
:
name
=>
this
.
state
.
addHelper
(
name
)
};
if
(
isInLoop
(
this
.
blockPath
))
{
state
.
loopDepth
++
;
}
this
.
blockPath
.
traverse
(
letReferenceBlockVisitor
,
state
);
return
state
.
closurify
;
}
checkLoop
()
{
const
state
=
{
hasBreakContinue
:
false
,
ignoreLabeless
:
false
,
inSwitchCase
:
false
,
innerLabels
:
[],
hasReturn
:
false
,
isLoop
:
!!
this
.
loop
,
map
:
{},
LOOP_IGNORE
:
Symbol
()
};
this
.
blockPath
.
traverse
(
loopLabelVisitor
,
state
);
this
.
blockPath
.
traverse
(
loopVisitor
,
state
);
return
state
;
}
hoistVarDeclarations
()
{
this
.
blockPath
.
traverse
(
hoistVarDeclarationsVisitor
,
this
);
}
pushDeclar
(
node
)
{
const
declars
=
[];
const
names
=
_core
.
types
.
getBindingIdentifiers
(
node
);
for
(
const
name
of
Object
.
keys
(
names
))
{
declars
.
push
(
_core
.
types
.
variableDeclarator
(
names
[
name
]));
}
this
.
body
.
push
(
_core
.
types
.
variableDeclaration
(
node
.
kind
,
declars
));
const
replace
=
[];
for
(
let
i
=
0
;
i
<
node
.
declarations
.
length
;
i
++
)
{
const
declar
=
node
.
declarations
[
i
];
if
(
!
declar
.
init
)
continue
;
const
expr
=
_core
.
types
.
assignmentExpression
(
"="
,
_core
.
types
.
cloneNode
(
declar
.
id
),
_core
.
types
.
cloneNode
(
declar
.
init
));
replace
.
push
(
_core
.
types
.
inherits
(
expr
,
declar
));
}
return
replace
;
}
buildHas
(
ret
)
{
const
body
=
this
.
body
;
const
has
=
this
.
has
;
if
(
has
.
hasBreakContinue
)
{
for
(
const
key
of
Object
.
keys
(
has
.
map
))
{
body
.
push
(
_core
.
types
.
ifStatement
(
_core
.
types
.
binaryExpression
(
"==="
,
_core
.
types
.
identifier
(
ret
),
_core
.
types
.
stringLiteral
(
key
)),
has
.
map
[
key
]));
}
}
if
(
has
.
hasReturn
)
{
body
.
push
(
buildRetCheck
({
RETURN
:
_core
.
types
.
identifier
(
ret
)
}));
}
}
}
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