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* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
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* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
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* accompanied this code).
*
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package jdk.jshell.spi;
import java.util.Collections;
import java.util.Map;
/**
* The provider used by JShell to generate the execution engine needed to
* evaluate Snippets. Alternate execution engines can be created by
* implementing this interface, then configuring JShell with the provider or
* the providers name and parameter specifier.
*
* @author Robert Field
* @since 9
*/
public interface ExecutionControlProvider {
/**
* The unique name of this {@code ExecutionControlProvider}. The name must
* be a sequence of characters from the Basic Multilingual Plane which are
* {@link Character#isJavaIdentifierPart(char) }.
*
* @return the ExecutionControlProvider's name
*/
String name();
/**
* Create and return the default parameter map for this
* {@code ExecutionControlProvider}. The map can optionally be modified;
* Modified or unmodified it can be passed to
* {@link #generate(jdk.jshell.spi.ExecutionEnv, java.util.Map) }.
*
* @return the default parameter map
*/
default Map<String,String> defaultParameters() {
return Collections.emptyMap();
}
/**
* Create and return the {@code ExecutionControl} instance.
*
* @param env the execution environment, provided by JShell
* @param parameters the {@linkplain #defaultParameters() default} or
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