com.oracle.truffle.js.parser.env

Class Environment

java.lang.Object

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

Direct Known Subclasses:

BlockEnvironment, DebugEnvironment, EvalEnvironment, FunctionEnvironment, GlobalEnvironment, WithEnvironment

public abstract class Environment
extends Object

Nested Class Summary

Nested Classes

Modifier and Type	Class and 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 and Description
static String	ARGUMENTS_NAME
protected JSContext	context
protected NodeFactory	factory
static String	NEW_TARGET_NAME
static String	SUPER_NAME
static String	THIS_NAME

Constructor Summary

Constructors

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

Method Summary

Modifier and Type	Method and Description
void	addFrameSlotFromSymbol(Symbol symbol)
void	addFrameSlotsFromSymbols(Iterable<Symbol> symbols)
void	addFrameSlotsFromSymbols(Iterable<Symbol> symbols, boolean onlyBlockScoped)
JavaScriptNode	createLocal(com.oracle.truffle.api.frame.FrameSlot frameSlot, int level, int scopeLevel)
JavaScriptNode	createLocal(com.oracle.truffle.api.frame.FrameSlot frameSlot, int level, int scopeLevel, boolean checkTDZ)
Environment.VarRef	createTempVar()
com.oracle.truffle.api.frame.FrameSlot	declareLocalVar(Object name)
com.oracle.truffle.api.frame.FrameSlot	declareVar(Object name)
Environment.VarRef	findArgumentsVar()
Environment.VarRef	findAsyncContextVar()
Environment.VarRef	findAsyncResultVar()
protected abstract com.oracle.truffle.api.frame.FrameSlot	findBlockFrameSlot(String name)
Environment.VarRef	findDynamicScopeVar()
protected Environment.VarRef	findInternalSlot(String name)
protected Environment.VarRef	findInternalSlot(String name, boolean allowDebug)
Environment.VarRef	findLocalVar(String name)
Environment.VarRef	findNewTargetVar()
Environment.VarRef	findSuperVar()
Environment.VarRef	findTempVar(com.oracle.truffle.api.frame.FrameSlot var)
Environment.VarRef	findThisVar()
Environment.VarRef	findVar(String name, boolean skipWith)
Environment.VarRef	findVar(String name, boolean skipWith, boolean skipEval, boolean skipBlockScoped, boolean skipGlobal)
Environment.VarRef	findYieldValueVar()
abstract FunctionEnvironment	function()
com.oracle.truffle.api.frame.FrameDescriptor	getBlockFrameDescriptor()
com.oracle.truffle.api.frame.FrameDescriptor	getFunctionFrameDescriptor()
Environment	getParent()
Environment	getParentAt(int frameLevel, int scopeLevel)
com.oracle.truffle.api.frame.FrameSlot[]	getParentSlots()
com.oracle.truffle.api.frame.FrameSlot[]	getParentSlots(int frameLevel, int scopeLevel)
int	getScopeLevel()
Environment	getVariableEnvironment()
boolean	hasLocalVar(String name)
boolean	isDynamicallyScoped()
boolean	isDynamicScopeContext() Environment chain contains a dynamic scope (eval or with) that may shadow variables.
boolean	isStrictMode()

Methods inherited from class java.lang.Object

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

Field Detail

ARGUMENTS_NAME

public static final String ARGUMENTS_NAME

See Also:

Constant Field Values

THIS_NAME

public static final String THIS_NAME

See Also:

Constant Field Values

SUPER_NAME

public static final String SUPER_NAME

See Also:

Constant Field Values

NEW_TARGET_NAME

public static final String NEW_TARGET_NAME

See Also:

Constant Field Values

factory

protected final NodeFactory factory

context

protected final JSContext context

Constructor Detail

Environment

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

Method Detail

declareLocalVar

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

declareVar

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

hasLocalVar

public boolean hasLocalVar(String name)

findThisVar

public Environment.VarRef findThisVar()

findSuperVar

public Environment.VarRef findSuperVar()

findArgumentsVar

public Environment.VarRef findArgumentsVar()

findNewTargetVar

public Environment.VarRef findNewTargetVar()

findAsyncContextVar

public Environment.VarRef findAsyncContextVar()

findAsyncResultVar

public Environment.VarRef findAsyncResultVar()

findYieldValueVar

public Environment.VarRef findYieldValueVar()

findDynamicScopeVar

public Environment.VarRef findDynamicScopeVar()

createLocal

public final JavaScriptNode createLocal(com.oracle.truffle.api.frame.FrameSlot frameSlot,
                                        int level,
                                        int scopeLevel)

createLocal

public final JavaScriptNode createLocal(com.oracle.truffle.api.frame.FrameSlot frameSlot,
                                        int level,
                                        int scopeLevel,
                                        boolean checkTDZ)

findInternalSlot

protected final Environment.VarRef findInternalSlot(String name)

findInternalSlot

protected final Environment.VarRef findInternalSlot(String name,
                                                    boolean allowDebug)

findLocalVar

public final Environment.VarRef findLocalVar(String name)

findVar

public final Environment.VarRef findVar(String name,
                                        boolean skipWith)

findVar

public final Environment.VarRef findVar(String name,
                                        boolean skipWith,
                                        boolean skipEval,
                                        boolean skipBlockScoped,
                                        boolean skipGlobal)

findBlockFrameSlot

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

getBlockFrameDescriptor

public com.oracle.truffle.api.frame.FrameDescriptor getBlockFrameDescriptor()

getParent

public final Environment getParent()

function

public abstract FunctionEnvironment function()

getParentAt

public final Environment getParentAt(int frameLevel,
                                     int scopeLevel)

createTempVar

public Environment.VarRef createTempVar()

findTempVar

public Environment.VarRef findTempVar(com.oracle.truffle.api.frame.FrameSlot var)

getFunctionFrameDescriptor

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

isStrictMode

public boolean isStrictMode()

getScopeLevel

public int getScopeLevel()

getParentSlots

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

getParentSlots

public final com.oracle.truffle.api.frame.FrameSlot[] getParentSlots(int frameLevel,
                                                                     int scopeLevel)

addFrameSlotsFromSymbols

public void addFrameSlotsFromSymbols(Iterable<Symbol> symbols)

addFrameSlotsFromSymbols

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

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()