org.jruby.runtime.scope

Class ManyVarsDynamicScope

java.lang.Object

org.jruby.runtime.DynamicScope

org.jruby.runtime.scope.ManyVarsDynamicScope

public class ManyVarsDynamicScope
extends DynamicScope

Represents the the dynamic portion of scoping information. The variableValues are the values of assigned local or block variables. The staticScope identifies which sort of scope this is (block or local). Properties of Dynamic Scopes: 1. static and dynamic scopes have the same number of names to values 2. size of variables (and thus names) is determined during parsing. So those structured do not need to change FIXME: When creating dynamic scopes we sometimes accidentally pass in extra parents. This is harmless (other than wasting memory), but we should not do that. We can fix this in two ways: 1. Fix all callers 2. Check parent that is passed in and make if new instance is local, then its parent is not local

Field Summary

Fields inherited from class org.jruby.runtime.DynamicScope

parent, staticScope

Constructor Summary

Constructors

Constructor and Description
ManyVarsDynamicScope(StaticScope staticScope)
ManyVarsDynamicScope(StaticScope staticScope, DynamicScope parent)

Method Summary

Methods

Modifier and Type	Method and Description
DynamicScope	cloneScope()
IRubyObject	getValue(int offset, int depth) Get value from current scope or one of its captured scopes.
IRubyObject	getValueDepthZeroOrNil(int offset, IRubyObject nil) getValueOrNil for depth 0
IRubyObject	getValueOneDepthZeroOrNil(IRubyObject nil) getValueOrNil for index 1, depth 0
IRubyObject	getValueOrNil(int offset, int depth, IRubyObject nil) Variation of getValue that checks for nulls, returning and setting the given value (presumably nil)
IRubyObject[]	getValues()
IRubyObject	getValueThreeDepthZeroOrNil(IRubyObject nil) getValueOrNil for index 3, depth 0
IRubyObject	getValueTwoDepthZeroOrNil(IRubyObject nil) getValueOrNil for index 2, depth 0
IRubyObject	getValueZeroDepthZeroOrNil(IRubyObject nil) getValueOrNil for index 0, depth 0
void	growIfNeeded() Make a larger dynamic scope if the static scope grew.
IRubyObject	setValue(int offset, IRubyObject value, int depth) Set value in current dynamic scope or one of its captured scopes.
IRubyObject	setValueDepthZero(IRubyObject value, int offset) setValue for depth zero
IRubyObject	setValueOneDepthZero(IRubyObject value) Set value one in this scope.
IRubyObject	setValueThreeDepthZero(IRubyObject value) Set value three in this scope.
IRubyObject	setValueTwoDepthZero(IRubyObject value) Set value two in this scope.
IRubyObject	setValueZeroDepthZero(IRubyObject value) Set value zero in this scope;

Methods inherited from class org.jruby.runtime.DynamicScope

clearEvalType, getAllNamesInScope, getEvalType, getFlipScope, getNextCapturedScope, getNthParentScope, getParentScope, getStaticScope, inBindingEval, inInstanceEval, inModuleEval, isLambda, newDummyScope, newDynamicScope, newDynamicScope, newDynamicScope, setEvalType, setLambda, setValue, toString, toString

Methods inherited from class java.lang.Object

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

Constructor Detail

ManyVarsDynamicScope

public ManyVarsDynamicScope(StaticScope staticScope,
                    DynamicScope parent)

ManyVarsDynamicScope

public ManyVarsDynamicScope(StaticScope staticScope)

Method Detail

cloneScope

public DynamicScope cloneScope()

Specified by:

cloneScope in class DynamicScope

getValues

public IRubyObject[] getValues()

Specified by:

getValues in class DynamicScope

getValue

public IRubyObject getValue(int offset,
                   int depth)

Get value from current scope or one of its captured scopes. FIXME: block variables are not getting primed to nil so we need to null check those until we prime them properly. Also add assert back in.

Specified by:

getValue in class DynamicScope

Parameters:

offset - zero-indexed value that represents where variable lives

depth - how many captured scopes down this variable should be set

Returns:

the value here

getValueOrNil

public IRubyObject getValueOrNil(int offset,
                        int depth,
                        IRubyObject nil)

Variation of getValue that checks for nulls, returning and setting the given value (presumably nil)

Specified by:

getValueOrNil in class DynamicScope

getValueDepthZeroOrNil

public IRubyObject getValueDepthZeroOrNil(int offset,
                                 IRubyObject nil)

Description copied from class: DynamicScope

getValueOrNil for depth 0

Specified by:

getValueDepthZeroOrNil in class DynamicScope

getValueZeroDepthZeroOrNil

public IRubyObject getValueZeroDepthZeroOrNil(IRubyObject nil)

Description copied from class: DynamicScope

getValueOrNil for index 0, depth 0

Specified by:

getValueZeroDepthZeroOrNil in class DynamicScope

getValueOneDepthZeroOrNil

public IRubyObject getValueOneDepthZeroOrNil(IRubyObject nil)

Description copied from class: DynamicScope

getValueOrNil for index 1, depth 0

Specified by:

getValueOneDepthZeroOrNil in class DynamicScope

getValueTwoDepthZeroOrNil

public IRubyObject getValueTwoDepthZeroOrNil(IRubyObject nil)

Description copied from class: DynamicScope

getValueOrNil for index 2, depth 0

Specified by:

getValueTwoDepthZeroOrNil in class DynamicScope

getValueThreeDepthZeroOrNil

public IRubyObject getValueThreeDepthZeroOrNil(IRubyObject nil)

Description copied from class: DynamicScope

getValueOrNil for index 3, depth 0

Specified by:

getValueThreeDepthZeroOrNil in class DynamicScope

setValue

public IRubyObject setValue(int offset,
                   IRubyObject value,
                   int depth)

Set value in current dynamic scope or one of its captured scopes.

Specified by:

setValue in class DynamicScope

Parameters:

offset - zero-indexed value that represents where variable lives

value - to set

depth - how many captured scopes down this variable should be set

setValueDepthZero

public IRubyObject setValueDepthZero(IRubyObject value,
                            int offset)

Description copied from class: DynamicScope

setValue for depth zero

Specified by:

setValueDepthZero in class DynamicScope

Parameters:

value - to set

offset - zero-indexed value that represents where variable lives

setValueZeroDepthZero

public IRubyObject setValueZeroDepthZero(IRubyObject value)

Description copied from class: DynamicScope

Set value zero in this scope;

Specified by:

setValueZeroDepthZero in class DynamicScope

setValueOneDepthZero

public IRubyObject setValueOneDepthZero(IRubyObject value)

Description copied from class: DynamicScope

Set value one in this scope.

Specified by:

setValueOneDepthZero in class DynamicScope

setValueTwoDepthZero

public IRubyObject setValueTwoDepthZero(IRubyObject value)

Description copied from class: DynamicScope

Set value two in this scope.

Specified by:

setValueTwoDepthZero in class DynamicScope

setValueThreeDepthZero

public IRubyObject setValueThreeDepthZero(IRubyObject value)

Description copied from class: DynamicScope

Set value three in this scope.

Specified by:

setValueThreeDepthZero in class DynamicScope

growIfNeeded

public void growIfNeeded()

Make a larger dynamic scope if the static scope grew. Eval's with bindings require us to possibly change the size of the dynamic scope if things like 'eval "b = 2", binding' happens.

Specified by:

growIfNeeded in class DynamicScope