com.oracle.truffle.js.runtime

Class JSConfig

java.lang.Object

com.oracle.truffle.js.runtime.JSConfig

public final class JSConfig
extends Object

This class stores magic numbers and other configuration values.

Field Summary

Fields

Modifier and Type	Field and Description
static boolean	AnnexB Enable Annex B "Additional ECMAScript Features for Web Browsers".
static boolean	AssertFinalPropertySpecialization
static int	BigArrayThreshold
static int	BoundFunctionUnpackLimit Maximum bound function nesting level to unpack in specialization.
static int	ConcatToLeafLimit
static boolean	DebugCounters
static boolean	DetailedCallTargetNames [Construct] as part of the CallTarget names.
static boolean	DictionaryObject
static int	DictionaryObjectThreshold Migrate objects to dictionary mode when the number of properties exceeds this threshold.
static int	DictionaryObjectTransitionThreshold
static boolean	EagerStackTrace Always capture stack trace eagerly.
static int	ECMAScript2015
static int	ECMAScript2016
static int	ECMAScript2017
static int	ECMAScript2018
static int	ECMAScript2019
static int	ECMAScript2020
static int	ECMAScript2021
static int	ECMAScript2022
static int	ECMAScript2023
static int	ECMAScript2024
static int	ECMAScript5
static int	ECMAScript6
static int	ECMAScriptVersionYearDelta
static boolean	FastOwnKeys
static boolean	FillExceptionStack
static int	FunctionCacheLimit
static boolean	FunctionCacheOnInstance Try to cache by function object instead of call target.
static int	InitialArraySize
static boolean	InlineTrivialBuiltins AST-level inlining of trivial built-in functions (e.g.
static int	InteropLibraryLimit Default cache limit for dispatched InteropLibrary.
static int	LatestECMAScriptVersion
static boolean	LazyFunctionData
static boolean	LazyStrings
static boolean	LeafShapeAssumption
static boolean	LocalVarIncDecNode
static boolean	ManyBlockScopes
static boolean	MarkElementsNonNull
static int	MaxArrayHoleSize
static int	MaxCompiledRegexCacheLength
static int	MaxConsolePrintProperties When printing to console/inspector, only print that many properties.
static int	MaxFlatArraySize
static boolean	MergeCompatibleLocations
static boolean	MergeShapes
static int	MinLazyStringLength
static boolean	OptimizeApplyArguments
static boolean	OptimizeNoFallthroughSwitch
static boolean	PrintAst
static boolean	PrintParse
static boolean	PropertyAssumption
static int	PropertyCacheLimit
static boolean	RestrictForceSplittingBuiltins
static boolean	ReturnOptimizer
static boolean	ReturnValueInFrame
static boolean	SkipFinalShapeCheck
static boolean	SkipGlobalShapeCheck
static boolean	SkipPrototypeShapeCheck
static boolean	SplitModuleRoot
static int	SpreadArgumentPlaceholderCount
static int	StagingECMAScriptVersion
static boolean	SubstrateVM
static boolean	TraceArrayTransitions Traces transitions between dynamic array types.
static boolean	TraceArrayWrites Traces all array writes with their access mode.
static boolean	TraceDictionaryObject
static boolean	TraceFunctionCache
static boolean	TraceMegamorphicPropertyAccess
static boolean	TracePolymorphicPropertyAccess
static boolean	TrackArrayAllocationSites
static boolean	TrimCompiledRegexCache
static boolean	UseSingletonSymbols
static boolean	UseSuperOperations
static boolean	YieldResultInFrame

Constructor Summary

Constructors

Constructor and Description
JSConfig()

Method Summary

Methods inherited from class java.lang.Object

clone, equals, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Field Detail

MaxConsolePrintProperties

public static final int MaxConsolePrintProperties

When printing to console/inspector, only print that many properties.

See Also:

Constant Field Values

InitialArraySize

public static final int InitialArraySize

See Also:

Constant Field Values

MaxArrayHoleSize

public static final int MaxArrayHoleSize

See Also:

Constant Field Values

MaxFlatArraySize

public static final int MaxFlatArraySize

See Also:

Constant Field Values

TrackArrayAllocationSites

public static final boolean TrackArrayAllocationSites

BigArrayThreshold

public static final int BigArrayThreshold

See Also:

Constant Field Values

MarkElementsNonNull

public static final boolean MarkElementsNonNull

See Also:

Constant Field Values

DebugCounters

public static final boolean DebugCounters

ECMAScript5

public static final int ECMAScript5

See Also:

Constant Field Values

ECMAScript6

public static final int ECMAScript6

See Also:

Constant Field Values

ECMAScript2015

public static final int ECMAScript2015

See Also:

Constant Field Values

ECMAScript2016

public static final int ECMAScript2016

See Also:

Constant Field Values

ECMAScript2017

public static final int ECMAScript2017

See Also:

Constant Field Values

ECMAScript2018

public static final int ECMAScript2018

See Also:

Constant Field Values

ECMAScript2019

public static final int ECMAScript2019

See Also:

Constant Field Values

ECMAScript2020

public static final int ECMAScript2020

See Also:

Constant Field Values

ECMAScript2021

public static final int ECMAScript2021

See Also:

Constant Field Values

ECMAScript2022

public static final int ECMAScript2022

See Also:

Constant Field Values

ECMAScript2023

public static final int ECMAScript2023

See Also:

Constant Field Values

ECMAScript2024

public static final int ECMAScript2024

See Also:

Constant Field Values

ECMAScriptVersionYearDelta

public static final int ECMAScriptVersionYearDelta

See Also:

Constant Field Values

LatestECMAScriptVersion

public static final int LatestECMAScriptVersion

See Also:

Constant Field Values

StagingECMAScriptVersion

public static final int StagingECMAScriptVersion

See Also:

Constant Field Values

AnnexB

public static final boolean AnnexB

Enable Annex B "Additional ECMAScript Features for Web Browsers".

See Also:

Constant Field Values

InteropLibraryLimit

public static final int InteropLibraryLimit

Default cache limit for dispatched InteropLibrary.

See Also:

Constant Field Values

PropertyCacheLimit

public static final int PropertyCacheLimit

See Also:

Constant Field Values

FunctionCacheLimit

public static final int FunctionCacheLimit

See Also:

Constant Field Values

AssertFinalPropertySpecialization

public static final boolean AssertFinalPropertySpecialization

See Also:

Constant Field Values

FunctionCacheOnInstance

public static final boolean FunctionCacheOnInstance

Try to cache by function object instead of call target.

See Also:

Constant Field Values

BoundFunctionUnpackLimit

public static final int BoundFunctionUnpackLimit

Maximum bound function nesting level to unpack in specialization.

See Also:

Constant Field Values

DictionaryObject

public static final boolean DictionaryObject

See Also:

Constant Field Values

DictionaryObjectThreshold

public static final int DictionaryObjectThreshold

Migrate objects to dictionary mode when the number of properties exceeds this threshold.

See Also:

Constant Field Values

DictionaryObjectTransitionThreshold

public static final int DictionaryObjectTransitionThreshold

See Also:

Constant Field Values

MergeShapes

public static final boolean MergeShapes

See Also:

Constant Field Values

MergeCompatibleLocations

public static boolean MergeCompatibleLocations

LazyStrings

public static final boolean LazyStrings

See Also:

Constant Field Values

MinLazyStringLength

public static final int MinLazyStringLength

See Also:

Constant Field Values

ConcatToLeafLimit

public static final int ConcatToLeafLimit

See Also:

Constant Field Values

ReturnOptimizer

public static final boolean ReturnOptimizer

See Also:

Constant Field Values

ReturnValueInFrame

public static final boolean ReturnValueInFrame

See Also:

Constant Field Values

LocalVarIncDecNode

public static final boolean LocalVarIncDecNode

See Also:

Constant Field Values

OptimizeApplyArguments

public static final boolean OptimizeApplyArguments

See Also:

Constant Field Values

OptimizeNoFallthroughSwitch

public static boolean OptimizeNoFallthroughSwitch

ManyBlockScopes

public static final boolean ManyBlockScopes

See Also:

Constant Field Values

YieldResultInFrame

public static final boolean YieldResultInFrame

See Also:

Constant Field Values

LazyFunctionData

public static final boolean LazyFunctionData

See Also:

Constant Field Values

SplitModuleRoot

public static final boolean SplitModuleRoot

See Also:

Constant Field Values

PrintAst

public static final boolean PrintAst

See Also:

Constant Field Values

PrintParse

public static final boolean PrintParse

See Also:

Constant Field Values

MaxCompiledRegexCacheLength

public static final int MaxCompiledRegexCacheLength

See Also:

Constant Field Values

TrimCompiledRegexCache

public static final boolean TrimCompiledRegexCache

See Also:

Constant Field Values

RestrictForceSplittingBuiltins

public static final boolean RestrictForceSplittingBuiltins

See Also:

Constant Field Values

UseSuperOperations

public static final boolean UseSuperOperations

See Also:

Constant Field Values

FastOwnKeys

public static final boolean FastOwnKeys

See Also:

Constant Field Values

InlineTrivialBuiltins

public static final boolean InlineTrivialBuiltins

AST-level inlining of trivial built-in functions (e.g. String.prototype.charAt).

See Also:

Constant Field Values

DetailedCallTargetNames

public static final boolean DetailedCallTargetNames

[Construct] as part of the CallTarget names. Off by default (footprint).

See Also:

Constant Field Values

SpreadArgumentPlaceholderCount

public static final int SpreadArgumentPlaceholderCount

See Also:

Constant Field Values

FillExceptionStack

public static final boolean FillExceptionStack

See Also:

Constant Field Values

EagerStackTrace

public static final boolean EagerStackTrace

Always capture stack trace eagerly.

See Also:

Constant Field Values

SkipPrototypeShapeCheck

public static final boolean SkipPrototypeShapeCheck

See Also:

Constant Field Values

SkipGlobalShapeCheck

public static final boolean SkipGlobalShapeCheck

See Also:

Constant Field Values

SkipFinalShapeCheck

public static final boolean SkipFinalShapeCheck

See Also:

Constant Field Values

LeafShapeAssumption

public static final boolean LeafShapeAssumption

See Also:

Constant Field Values

PropertyAssumption

public static final boolean PropertyAssumption

See Also:

Constant Field Values

SubstrateVM

public static final boolean SubstrateVM

TracePolymorphicPropertyAccess

public static final boolean TracePolymorphicPropertyAccess

TraceMegamorphicPropertyAccess

public static final boolean TraceMegamorphicPropertyAccess

See Also:

Constant Field Values

TraceFunctionCache

public static final boolean TraceFunctionCache

See Also:

Constant Field Values

TraceArrayTransitions

public static final boolean TraceArrayTransitions

Traces transitions between dynamic array types.

TraceArrayWrites

public static final boolean TraceArrayWrites

Traces all array writes with their access mode.

See Also:

Constant Field Values

TraceDictionaryObject

public static final boolean TraceDictionaryObject

See Also:

Constant Field Values

UseSingletonSymbols

public static final boolean UseSingletonSymbols

See Also:

Constant Field Values

Constructor Detail

JSConfig

public JSConfig()