com.oracle.truffle.js.parser.env

Class FunctionEnvironment

java.lang.Object

com.oracle.truffle.js.parser.env.Environment

com.oracle.truffle.js.parser.env.FunctionEnvironment

public class FunctionEnvironment
extends Environment

Nested Class Summary

Nested Classes

Modifier and Type	Class and Description
class	FunctionEnvironment.JumpTargetCloseable<T extends BreakTarget>

Nested classes/interfaces inherited from class com.oracle.truffle.js.parser.env.Environment

Environment.AbstractFrameVarRef, Environment.FrameSlotVarRef, Environment.GlobalLexVarRef, Environment.GlobalVarRef, Environment.MappedArgumentVarRef, Environment.VarRef, Environment.WrappedVarRef

Field Summary

Fields inherited from class com.oracle.truffle.js.parser.env.Environment

ARGUMENTS_NAME, context, factory, NEW_TARGET_NAME, SUPER_NAME, THIS_NAME

Constructor Summary

Constructors

Constructor and Description
FunctionEnvironment(Environment parent, NodeFactory factory, JSContext context, boolean isStrictMode, boolean isEval, boolean isDirectEval, boolean isArrowFunction, boolean isGeneratorFunction, boolean isDerivedConstructor, boolean isAsyncFunction, boolean isGlobal, boolean hasSyntheticArguments)

Method Summary

Modifier and Type	Method and Description
void	addAwait()
void	addReturn()
void	addYield()
com.oracle.truffle.api.frame.FrameSlot	declareLocalVar(Object name)
void	declareParameter(String name)
com.oracle.truffle.api.frame.FrameSlot	declareVar(Object name)
protected com.oracle.truffle.api.frame.FrameSlot	findBlockFrameSlot(String name)
BreakTarget	findBreakTarget(Object label)
ContinueTarget	findContinueTarget(Object label)
void	freeze()
FunctionEnvironment	function()
protected com.oracle.truffle.api.frame.FrameSlot	getArgumentsSlot()
com.oracle.truffle.api.frame.FrameSlot	getAsyncContextSlot()
com.oracle.truffle.api.frame.FrameSlot	getAsyncResultSlot()
com.oracle.truffle.api.frame.FrameDescriptor	getFunctionFrameDescriptor()
String	getFunctionName()
String	getInternalFunctionName()
int	getLeadingArgumentCount()
com.oracle.truffle.api.frame.FrameSlot	getNewTargetSlot()
FunctionEnvironment	getNonArrowParentFunction()
int	getOutermostFunctionLevel() Returns the number of frame levels to skip to reach the outermost function (module/script).
int	getParameterCount()
protected int	getParameterIndex(com.oracle.truffle.api.frame.FrameSlot slot)
List<com.oracle.truffle.api.frame.FrameSlot>	getParameters()
FunctionEnvironment	getParentFunction()
FunctionEnvironment	getParentFunction(int level)
com.oracle.truffle.api.frame.FrameSlot[]	getParentSlots()
com.oracle.truffle.api.frame.FrameSlot	getReturnSlot()
com.oracle.truffle.api.frame.FrameSlot	getSuperSlot()
int	getThisFunctionLevel() Returns the number of function levels to skip to reach the function with the [[ThisValue]].
com.oracle.truffle.api.frame.FrameSlot	getThisSlot()
int	getTrailingArgumentCount()
Environment	getVariableEnvironment()
com.oracle.truffle.api.frame.FrameSlot	getYieldResultSlot()
boolean	hasArgumentsSlot()
boolean	hasAwait()
boolean	hasLocalVar(String name)
boolean	hasRestParameter()
boolean	hasReturn()
boolean	hasSimpleParameterList()
boolean	hasSyntheticArguments()
boolean	hasYield()
boolean	inDirectEval()
boolean	isArrowFunction()
boolean	isAsyncFunction()
boolean	isAsyncGeneratorFunction()
boolean	isCallerContextEval()
boolean	isDeepFrozen()
boolean	isDerivedConstructor()
boolean	isDirectArgumentsAccess()
boolean	isDirectEval()
boolean	isDynamicallyScoped() Function is dynamically scope because it's non-strict and has a direct eval call.
boolean	isDynamicScopeContext() Environment chain contains a dynamic scope (eval or with) that may shadow variables.
boolean	isEval()
boolean	isFrozen()
boolean	isGeneratorFunction()
boolean	isGlobal()
boolean	isIndirectEval()
protected boolean	isNamedFunctionExpression()
protected boolean	isParam(com.oracle.truffle.api.frame.FrameSlot slot)
boolean	isParameter(String name)
boolean	isStrictMode()
boolean	needsParentFrame()
FunctionEnvironment.JumpTargetCloseable<BreakTarget>	pushBreakTarget(Object label)
FunctionEnvironment.JumpTargetCloseable<ContinueTarget>	pushContinueTarget(Object label)
com.oracle.truffle.api.frame.FrameSlot	reserveArgumentsSlot()
com.oracle.truffle.api.frame.FrameSlot	reserveDynamicScopeSlot()
void	reserveNewTargetSlot()
void	reserveSuperSlot()
void	reserveThisSlot()
boolean	returnsLastStatementResult()
void	setDirectArgumentsAccess(boolean directArgumentsAccess)
void	setFunctionName(String functionName)
void	setInternalFunctionName(String internalFunctionName)
void	setIsDynamicallyScoped(boolean isDynamicallyScoped)
void	setNamedFunctionExpression(boolean isNamedExpression)
void	setNeedsParentFrame(boolean needsParentFrame)
void	setRestParameter(boolean restParameter)
void	setSimpleParameterList(boolean simpleParameterList)

Methods inherited from class com.oracle.truffle.js.parser.env.Environment

addFrameSlotFromSymbol, addFrameSlotsFromSymbols, addFrameSlotsFromSymbols, createLocal, createLocal, createTempVar, findArgumentsVar, findAsyncContextVar, findAsyncResultVar, findDynamicScopeVar, findInternalSlot, findInternalSlot, findLocalVar, findNewTargetVar, findSuperVar, findTempVar, findThisVar, findVar, findVar, findYieldValueVar, getBlockFrameDescriptor, getParent, getParentAt, getParentSlots, getScopeLevel

Methods inherited from class java.lang.Object

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

Constructor Detail

FunctionEnvironment

public FunctionEnvironment(Environment parent,
                           NodeFactory factory,
                           JSContext context,
                           boolean isStrictMode,
                           boolean isEval,
                           boolean isDirectEval,
                           boolean isArrowFunction,
                           boolean isGeneratorFunction,
                           boolean isDerivedConstructor,
                           boolean isAsyncFunction,
                           boolean isGlobal,
                           boolean hasSyntheticArguments)

Method Detail

function

public FunctionEnvironment function()

Specified by:

function in class Environment

declareLocalVar

public com.oracle.truffle.api.frame.FrameSlot declareLocalVar(Object name)

Overrides:

declareLocalVar in class Environment

declareVar

public com.oracle.truffle.api.frame.FrameSlot declareVar(Object name)

Overrides:

declareVar in class Environment

reserveArgumentsSlot

public com.oracle.truffle.api.frame.FrameSlot reserveArgumentsSlot()

getReturnSlot

public com.oracle.truffle.api.frame.FrameSlot getReturnSlot()

reserveThisSlot

public void reserveThisSlot()

reserveNewTargetSlot

public void reserveNewTargetSlot()

getAsyncResultSlot

public com.oracle.truffle.api.frame.FrameSlot getAsyncResultSlot()

getAsyncContextSlot

public com.oracle.truffle.api.frame.FrameSlot getAsyncContextSlot()

getYieldResultSlot

public com.oracle.truffle.api.frame.FrameSlot getYieldResultSlot()

getThisSlot

public com.oracle.truffle.api.frame.FrameSlot getThisSlot()

reserveDynamicScopeSlot

public com.oracle.truffle.api.frame.FrameSlot reserveDynamicScopeSlot()

isEval

public boolean isEval()

isArrowFunction

public boolean isArrowFunction()

isGeneratorFunction

public boolean isGeneratorFunction()

findBlockFrameSlot

protected com.oracle.truffle.api.frame.FrameSlot findBlockFrameSlot(String name)

Specified by:

findBlockFrameSlot in class Environment

hasLocalVar

public boolean hasLocalVar(String name)

Overrides:

hasLocalVar in class Environment

pushContinueTarget

public FunctionEnvironment.JumpTargetCloseable<ContinueTarget> pushContinueTarget(Object label)

pushBreakTarget

public FunctionEnvironment.JumpTargetCloseable<BreakTarget> pushBreakTarget(Object label)

findBreakTarget

public BreakTarget findBreakTarget(Object label)

findContinueTarget

public ContinueTarget findContinueTarget(Object label)

hasReturn

public boolean hasReturn()

addReturn

public void addReturn()

hasAwait

public boolean hasAwait()

addAwait

public void addAwait()

hasYield

public boolean hasYield()

addYield

public void addYield()

setDirectArgumentsAccess

public void setDirectArgumentsAccess(boolean directArgumentsAccess)

isDirectArgumentsAccess

public boolean isDirectArgumentsAccess()

getParameterCount

public final int getParameterCount()

getParameters

public final List<com.oracle.truffle.api.frame.FrameSlot> getParameters()

declareParameter

public final void declareParameter(String name)

isParam

protected final boolean isParam(com.oracle.truffle.api.frame.FrameSlot slot)

getParameterIndex

protected final int getParameterIndex(com.oracle.truffle.api.frame.FrameSlot slot)

isParameter

public final boolean isParameter(String name)

getFunctionName

public final String getFunctionName()

setFunctionName

public final void setFunctionName(String functionName)

getInternalFunctionName

public final String getInternalFunctionName()

setInternalFunctionName

public final void setInternalFunctionName(String internalFunctionName)

setNamedFunctionExpression

public final void setNamedFunctionExpression(boolean isNamedExpression)

isNamedFunctionExpression

protected final boolean isNamedFunctionExpression()

needsParentFrame

public final boolean needsParentFrame()

setNeedsParentFrame

public final void setNeedsParentFrame(boolean needsParentFrame)

freeze

public void freeze()

isFrozen

public boolean isFrozen()

isDeepFrozen

public boolean isDeepFrozen()

hasArgumentsSlot

public final boolean hasArgumentsSlot()

getArgumentsSlot

protected final com.oracle.truffle.api.frame.FrameSlot getArgumentsSlot()

getFunctionFrameDescriptor

public final com.oracle.truffle.api.frame.FrameDescriptor getFunctionFrameDescriptor()

Overrides:

getFunctionFrameDescriptor in class Environment

isStrictMode

public final boolean isStrictMode()

Overrides:

isStrictMode in class Environment

getParentFunction

public final FunctionEnvironment getParentFunction()

getParentFunction

public final FunctionEnvironment getParentFunction(int level)

getNonArrowParentFunction

public final FunctionEnvironment getNonArrowParentFunction()

getParentSlots

public com.oracle.truffle.api.frame.FrameSlot[] getParentSlots()

Overrides:

getParentSlots in class Environment

isGlobal

public boolean isGlobal()

hasSyntheticArguments

public boolean hasSyntheticArguments()

returnsLastStatementResult

public boolean returnsLastStatementResult()

setIsDynamicallyScoped

public void setIsDynamicallyScoped(boolean isDynamicallyScoped)

isDynamicallyScoped

public boolean isDynamicallyScoped()

Function is dynamically scope because it's non-strict and has a direct eval call.

Overrides:

isDynamicallyScoped in class Environment

isDynamicScopeContext

public boolean isDynamicScopeContext()

Description copied from class: Environment

Environment chain contains a dynamic scope (eval or with) that may shadow variables.

Overrides:

isDynamicScopeContext in class Environment

getVariableEnvironment

public Environment getVariableEnvironment()

Overrides:

getVariableEnvironment in class Environment

isDirectEval

public boolean isDirectEval()

isIndirectEval

public boolean isIndirectEval()

isCallerContextEval

public boolean isCallerContextEval()

inDirectEval

public boolean inDirectEval()

reserveSuperSlot

public void reserveSuperSlot()

getSuperSlot

public com.oracle.truffle.api.frame.FrameSlot getSuperSlot()

getNewTargetSlot

public com.oracle.truffle.api.frame.FrameSlot getNewTargetSlot()

setRestParameter

public void setRestParameter(boolean restParameter)

hasRestParameter

public boolean hasRestParameter()

setSimpleParameterList

public void setSimpleParameterList(boolean simpleParameterList)

hasSimpleParameterList

public boolean hasSimpleParameterList()

getLeadingArgumentCount

public int getLeadingArgumentCount()

getTrailingArgumentCount

public int getTrailingArgumentCount()

isDerivedConstructor

public boolean isDerivedConstructor()

getThisFunctionLevel

public int getThisFunctionLevel()

Returns the number of function levels to skip to reach the function with the [[ThisValue]]. Loosely resembles GetThisEnvironment(), but we need to consider eval functions, too.

getOutermostFunctionLevel

public int getOutermostFunctionLevel()

Returns the number of frame levels to skip to reach the outermost function (module/script).

isAsyncFunction

public boolean isAsyncFunction()

isAsyncGeneratorFunction

public boolean isAsyncGeneratorFunction()