Class Environment

java.lang.Object

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

Direct Known Subclasses:

BlockEnvironment, DebugEnvironment, DerivedEnvironment, EvalEnvironment, FunctionEnvironment

public abstract class Environment
extends Object

Nested Class Summary

Nested Classes

Modifier and Type	Class	Description
class	Environment.AbstractFrameVarRef
class	Environment.FrameSlotVarRef
class	Environment.GlobalLexVarRef
class	Environment.GlobalVarRef
class	Environment.MappedArgumentVarRef
static class	Environment.VarRef
class	Environment.WrappedVarRef

Field Summary

Fields

Modifier and Type	Field	Description
protected final JSContext	context
protected final NodeFactory	factory

Constructor Summary

Constructors

Constructor	Description
Environment(Environment parent, NodeFactory factory, JSContext context)

Method Summary

Modifier and Type	Method	Description
void	addFrameSlotFromSymbol(Symbol symbol)
void	addFrameSlotsFromSymbols(Iterable<Symbol> symbols)
void	addFrameSlotsFromSymbols(Iterable<Symbol> symbols, boolean onlyBlockScoped, Predicate<Symbol> filter)
final JavaScriptNode	createLocal(JSFrameSlot frameSlot, int frameLevel, int scopeLevel)
Environment.VarRef	createTempVar()
JSFrameSlot	declareInternalSlot(Object name)
JSFrameSlot	declareLocalVar(Object name)
Environment.VarRef	findActiveModule()
Environment.VarRef	findArgumentsVar()
Environment.VarRef	findAsyncContextVar()
Environment.VarRef	findAsyncResultVar()
JSFrameSlot	findBlockFrameSlot(Object name)
final Environment.VarRef	findBlockScopedVar(com.oracle.truffle.api.strings.TruffleString name)
Environment.VarRef	findDynamicScopeVar()
JSFrameSlot	findFunctionFrameSlot(Object name)
final Environment.VarRef	findInternalSlot(Object name)
final Environment.VarRef	findInternalSlot(Object name, boolean allowDebug)
protected final Environment.VarRef	findInternalSlot(Object name, boolean allowDebug, int skippedFrames)
final Environment.VarRef	findLocalVar(com.oracle.truffle.api.strings.TruffleString name)
Environment.VarRef	findNewTargetVar()
Environment.VarRef	findSuperVar()
Environment.VarRef	findTempVar(JSFrameSlot var)
Environment.VarRef	findThisVar()
final Environment.VarRef	findVar(com.oracle.truffle.api.strings.TruffleString name, boolean skipWith)
final Environment.VarRef	findVar(com.oracle.truffle.api.strings.TruffleString name, boolean skipWith, boolean skipEval, boolean skipBlockScoped, boolean skipGlobal, boolean skipMapped)
final Environment.VarRef	findVar(com.oracle.truffle.api.strings.TruffleString name, boolean skipWith, boolean skipEval, boolean skipBlockScoped, boolean skipGlobal, boolean skipMapped, boolean skipVar)
Environment.VarRef	findYieldValueVar()
final FunctionEnvironment	function()
JSFrameDescriptor	getBlockFrameDescriptor()
final JSFrameSlot	getBlockScopeSlot(int frameLevel, int scopeLevel)
JSFrameSlot	getCurrentBlockScopeSlot()
JSFrameDescriptor	getFunctionFrameDescriptor()
final Environment	getParent()
final Environment	getParentAt(int frameLevel, int scopeLevel)
Scope	getScope()
int	getScopeLevel()
Environment	getVariableEnvironment()
boolean	hasLocalVar(Object name)
boolean	hasScopeFrame()
boolean	isDynamicallyScoped()
boolean	isDynamicScopeContext()	Environment chain contains a dynamic scope (eval or with) that may shadow variables.
boolean	isStrictMode()
protected static String	joinElements(Iterable<? extends Object> keySet)
void	reserveArgumentsSlot()
void	reserveDynamicScopeSlot()
void	reserveNewTargetSlot()
void	reserveSuperSlot()
void	reserveThisSlot()
String	toString()
protected String	toStringImpl(Map<String,Integer> state)

Methods inherited from class Object

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

Field Details

factory

protected final NodeFactory factory

context

protected final JSContext context

Constructor Details

Environment

public Environment(Environment parent,
 NodeFactory factory,
 JSContext context)

Method Details

declareLocalVar

public JSFrameSlot declareLocalVar(Object name)

hasLocalVar

public boolean hasLocalVar(Object name)

findThisVar

public Environment.VarRef findThisVar()

reserveThisSlot

public void reserveThisSlot()

findSuperVar

public Environment.VarRef findSuperVar()

reserveSuperSlot

public void reserveSuperSlot()

findArgumentsVar

public Environment.VarRef findArgumentsVar()

reserveArgumentsSlot

public void reserveArgumentsSlot()

findNewTargetVar

public Environment.VarRef findNewTargetVar()

reserveNewTargetSlot

public void reserveNewTargetSlot()

findAsyncContextVar

public Environment.VarRef findAsyncContextVar()

findAsyncResultVar

public Environment.VarRef findAsyncResultVar()

findYieldValueVar

public Environment.VarRef findYieldValueVar()

findDynamicScopeVar

public Environment.VarRef findDynamicScopeVar()

reserveDynamicScopeSlot

public void reserveDynamicScopeSlot()

declareInternalSlot

public JSFrameSlot declareInternalSlot(Object name)

createLocal

public final JavaScriptNode createLocal(JSFrameSlot frameSlot,
 int frameLevel,
 int scopeLevel)

findInternalSlot

public final Environment.VarRef findInternalSlot(Object name)

findInternalSlot

public final Environment.VarRef findInternalSlot(Object name,
 boolean allowDebug)

findInternalSlot

protected final Environment.VarRef findInternalSlot(Object name,
 boolean allowDebug,
 int skippedFrames)

findLocalVar

public final Environment.VarRef findLocalVar(com.oracle.truffle.api.strings.TruffleString name)

findVar

public final Environment.VarRef findVar(com.oracle.truffle.api.strings.TruffleString name,
 boolean skipWith)

findBlockScopedVar

public final Environment.VarRef findBlockScopedVar(com.oracle.truffle.api.strings.TruffleString name)

findVar

public final Environment.VarRef findVar(com.oracle.truffle.api.strings.TruffleString name,
 boolean skipWith,
 boolean skipEval,
 boolean skipBlockScoped,
 boolean skipGlobal,
 boolean skipMapped)

findVar

public final Environment.VarRef findVar(com.oracle.truffle.api.strings.TruffleString name,
 boolean skipWith,
 boolean skipEval,
 boolean skipBlockScoped,
 boolean skipGlobal,
 boolean skipMapped,
 boolean skipVar)

findBlockFrameSlot

public JSFrameSlot findBlockFrameSlot(Object name)

findFunctionFrameSlot

public JSFrameSlot findFunctionFrameSlot(Object name)

getBlockFrameDescriptor

public JSFrameDescriptor getBlockFrameDescriptor()

getParent

public final Environment getParent()

function

public final FunctionEnvironment function()

getParentAt

public final Environment getParentAt(int frameLevel,
 int scopeLevel)

createTempVar

public Environment.VarRef createTempVar()

findTempVar

public Environment.VarRef findTempVar(JSFrameSlot var)

getFunctionFrameDescriptor

public JSFrameDescriptor getFunctionFrameDescriptor()

isStrictMode

public boolean isStrictMode()

getScopeLevel

public int getScopeLevel()

hasScopeFrame

public boolean hasScopeFrame()

getScope

public Scope getScope()

getBlockScopeSlot

public final JSFrameSlot getBlockScopeSlot(int frameLevel,
 int scopeLevel)

getCurrentBlockScopeSlot

public JSFrameSlot getCurrentBlockScopeSlot()

addFrameSlotsFromSymbols

public void addFrameSlotsFromSymbols(Iterable<Symbol> symbols)

addFrameSlotsFromSymbols

public void addFrameSlotsFromSymbols(Iterable<Symbol> symbols,
 boolean onlyBlockScoped,
 Predicate<Symbol> filter)

addFrameSlotFromSymbol

public void addFrameSlotFromSymbol(Symbol symbol)

isDynamicallyScoped

public boolean isDynamicallyScoped()

isDynamicScopeContext

public boolean isDynamicScopeContext()

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

getVariableEnvironment

public Environment getVariableEnvironment()

findActiveModule

public Environment.VarRef findActiveModule()

toStringImpl

protected String toStringImpl(Map<String,Integer> state)

joinElements

protected static String joinElements(Iterable<? extends Object> keySet)

toString

public String toString()

Overrides:

toString in class Object