com.google.gerrit.rules

Class PrologEnvironment

java.lang.Object

com.googlecode.prolog_cafe.lang.PrologControl

com.googlecode.prolog_cafe.lang.BufferingPrologControl

com.google.gerrit.rules.PrologEnvironment

public class PrologEnvironment
extends com.googlecode.prolog_cafe.lang.BufferingPrologControl

Per-thread Prolog interpreter.

This class is not thread safe.

A single copy of the Prolog interpreter, for the current thread.

Nested Class Summary

Nested Classes

Modifier and Type	Class and Description
static class	PrologEnvironment.Args
static interface	PrologEnvironment.Factory

Field Summary

Fields inherited from class com.googlecode.prolog_cafe.lang.PrologControl

code, engine

Method Summary

Modifier and Type	Method and Description
void	addToCleanup(Runnable task) Adds cleanup task to run when close() is called
void	close() Release resources stored in interpreter's hash manager.
void	copyStoredValues(PrologEnvironment child) Copy the stored values from another interpreter to this one.
<T> T	get(StoredValue<T> sv) Lookup a stored value in the interpreter's hash manager.
PrologEnvironment.Args	getArgs()
<T> void	set(StoredValue<T> sv, T obj) Set a stored value on the interpreter's hash manager.
void	setCleanup(List<Runnable> newCleanupList) Assign the environment a cleanup list (in order to use a centralized list) If this enivronment's list is non-empty, append its cleanup tasks to the assigning list.
void	setPredicate(com.googlecode.prolog_cafe.lang.Predicate goal)

Methods inherited from class com.googlecode.prolog_cafe.lang.BufferingPrologControl

all, all, execute, fail, initialize, isEngineStopped, once, once, success

Methods inherited from class com.googlecode.prolog_cafe.lang.PrologControl

configureUserIO, executePredicate, getMaxDatabaseSize, getPrologClassLoader, getReductions, isEnabled, printStackTrace, setEnabled, setEnabled, setMaxDatabaseSize, setPredicate, setPredicate, setPrologClassLoader, setReductionLimit

Methods inherited from class java.lang.Object

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

Method Detail

getArgs

public PrologEnvironment.Args getArgs()

setPredicate

public void setPredicate(com.googlecode.prolog_cafe.lang.Predicate goal)

Overrides:

setPredicate in class com.googlecode.prolog_cafe.lang.PrologControl

get

public <T> T get(StoredValue<T> sv)

Lookup a stored value in the interpreter's hash manager.

Type Parameters:

T - type of stored Java object.

Parameters:

sv - unique key.

Returns:

the value; null if not stored.

set

public <T> void set(StoredValue<T> sv,
                    T obj)

Set a stored value on the interpreter's hash manager.

Type Parameters:

T - type of stored Java object.

Parameters:

sv - unique key.

obj - the value to store under sv.

copyStoredValues

public void copyStoredValues(PrologEnvironment child)

Copy the stored values from another interpreter to this one. Also gets the cleanup from the child interpreter

setCleanup

public void setCleanup(List<Runnable> newCleanupList)

Assign the environment a cleanup list (in order to use a centralized list) If this enivronment's list is non-empty, append its cleanup tasks to the assigning list.

addToCleanup

public void addToCleanup(Runnable task)

Adds cleanup task to run when close() is called

Parameters:

task - is run when close() is called

close

public void close()

Release resources stored in interpreter's hash manager.