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/*
* Copyright (c) 2017, 2022, Oracle and/or its affiliates. All rights reserved.
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*
* The Universal Permissive License (UPL), Version 1.0
*
* Subject to the condition set forth below, permission is hereby granted to any
* person obtaining a copy of this software, associated documentation and/or
* data (collectively the "Software"), free of charge and under any and all
* copyright rights in the Software, and any and all patent rights owned or
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* unmodified Software as contributed to or provided by such licensor, or (ii)
* the Larger Works (as defined below), to deal in both
*
* (a) the Software, and
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* (b) any piece of software and/or hardware listed in the lrgrwrks.txt file if
* one is included with the Software each a "Larger Work" to which the Software
* is contributed by such licensors),
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* Software and the Larger Work(s), and to sublicense the foregoing rights on
* either these or other terms.
*
* This license is subject to the following condition:
*
* The above copyright notice and either this complete permission notice or at a
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* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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package org.graalvm.polyglot;
import java.util.Set;
import org.graalvm.options.OptionDescriptor;
import org.graalvm.options.OptionDescriptors;
import org.graalvm.polyglot.impl.AbstractPolyglotImpl.AbstractLanguageDispatch;
/**
* A handle for a Graal language installed in an {@link Engine engine}. The handle provides access
* to the language's meta-data, including the language's {@link #getId() id}, {@link #getName()
* name}, {@link #getVersion() version} and {@link #getOptions() options}.
*
* @see Engine#getLanguages()
* @since 19.0
*/
public final class Language {
final AbstractLanguageDispatch dispatch;
final Object receiver;
Language(AbstractLanguageDispatch dispatch, Object receiver) {
this.dispatch = dispatch;
this.receiver = receiver;
}
/**
* Gets the primary identification string of this language. The language id is used as the
* primary way of identifying languages in the polyglot API. (eg. js)
*
* @return a language ID string.
* @since 19.0
*/
public String getId() {
return dispatch.getId(receiver);
}
/**
* Gets a human-readable name for the language (for example, "JavaScript").
*
* @return the user-friendly name for this language.
* @since 19.0
*/
public String getName() {
return dispatch.getName(receiver);
}
/**
* Gets a human-readable name of the language implementation (for example, "Graal.JS"). Returns
* null if no implementation name was specified.
*
* @since 19.0
*/
public String getImplementationName() {
return dispatch.getImplementationName(receiver);
}
/**
* Gets the version information of the language in an arbitrary language-specific format.
*
* @since 19.0
*/
public String getVersion() {
return dispatch.getVersion(receiver);
}
/**
* Returns true if a the language is suitable for interactive evaluation of
* {@link Source sources}. {@link #isInteractive() Interactive} languages should be displayed in
* interactive environments and presented to the user.
*
* @since 19.0
*/
public boolean isInteractive() {
return dispatch.isInteractive(receiver);
}
/**
* Returns the set of options provided by this language. Option values for languages can either
* be provided while building an {@link Engine.Builder#option(String, String) engine} or a
* {@link Context.Builder#option(String, String) context}. The option descriptor
* {@link OptionDescriptor#getName() name} must be used as the option name.
*
* @since 19.0
*/
public OptionDescriptors getOptions() {
return dispatch.getOptions(receiver);
}
/**
* Returns the default MIME type that is in use by a language. The default MIME type specifies
* whether a source is loaded as character or binary based source by default. Returns
* null if the language does not specify a default MIME type.
*
* @see Source#hasBytes()
* @see Source#getMimeType()
* @since 19.0
*/
public String getDefaultMimeType() {
return dispatch.getDefaultMimeType(receiver);
}
/**
* Returns the MIME types supported by this language.
*
* @see Source#getMimeType()
* @since 19.0
*/
public Set getMimeTypes() {
return dispatch.getMimeTypes(receiver);
}
/**
* Get the URL for the language website.
*
* @since 21.1.0
*/
public String getWebsite() {
return dispatch.getWebsite(receiver);
}
}
