Package net.hydromatic.morel.eval

Class EvalEnvs.MutablePatSubEvalEnv

java.lang.Object

net.hydromatic.morel.eval.EvalEnvs.ArraySubEvalEnv

net.hydromatic.morel.eval.EvalEnvs.PatSubEvalEnv

net.hydromatic.morel.eval.EvalEnvs.MutablePatSubEvalEnv

All Implemented Interfaces:

EvalEnv, MutableEvalEnv

Enclosing class:

EvalEnvs

static class EvalEnvs.MutablePatSubEvalEnv
extends EvalEnvs.PatSubEvalEnv
implements MutableEvalEnv

Evaluation environment that binds several slots based on a pattern.

Field Summary

Fields

Modifier and Type	Field	Description
private int	slot

Fields inherited from class net.hydromatic.morel.eval.EvalEnvs.PatSubEvalEnv

pat

Fields inherited from class net.hydromatic.morel.eval.EvalEnvs.ArraySubEvalEnv

names, parentEnv, values

Fields inherited from interface net.hydromatic.morel.eval.EvalEnv

SESSION

Constructor Summary

Constructors

Constructor	Description
MutablePatSubEvalEnv(EvalEnv parentEnv, Core.Pat pat, List<String> names)

Method Summary

Modifier and Type	Method	Description
(package private) boolean	bindRecurse(Core.Pat pat, Object argValue)
EvalEnv	fix()	Converts this environment to a non-mutable environment.
void	set(Object value)	Puts a value into this environment.
boolean	setOpt(Object value)	Puts a value into this environment in a way that may not succeed.

Methods inherited from class net.hydromatic.morel.eval.EvalEnvs.ArraySubEvalEnv

getOpt, visit

Methods inherited from class java.lang.Object

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

Methods inherited from interface net.hydromatic.morel.eval.EvalEnv

bind, bindMutable, bindMutableArray, bindMutablePat, getOpt, valueMap, visit

Field Detail

slot

private int slot

Constructor Detail

MutablePatSubEvalEnv

MutablePatSubEvalEnv(EvalEnv parentEnv,
                     Core.Pat pat,
                     List<String> names)

Method Detail

fix

public EvalEnv fix()

Description copied from interface: EvalEnv

Converts this environment to a non-mutable environment.

Specified by:

fix in interface EvalEnv

set

public void set(Object value)

Description copied from interface: MutableEvalEnv

Puts a value into this environment.

Specified by:

set in interface MutableEvalEnv

setOpt

public boolean setOpt(Object value)

Description copied from interface: MutableEvalEnv

Puts a value into this environment in a way that may not succeed.

For example, if this environment is based on the pattern (x, 2) then (1, 2) will succeed and will bind x to 1, but (3, 4) will fail.

The default implementation calls MutableEvalEnv.set(java.lang.Object) and always succeeds.

Specified by:

setOpt in interface MutableEvalEnv

bindRecurse

boolean bindRecurse(Core.Pat pat,
                    Object argValue)