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Truffle is a multi-language framework for executing dynamic languages
that achieves high performance when combined with Graal.
/*
* Copyright (c) 2017, 2020, Oracle and/or its affiliates. All rights reserved.
* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
*
* 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
* freely licensable by each licensor hereunder covering either (i) the
* 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
*
* (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),
*
* without restriction, including without limitation the rights to copy, create
* derivative works of, display, perform, and distribute the Software and make,
* use, sell, offer for sale, import, export, have made, and have sold the
* 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
* minimum a reference to the UPL must be included in all copies or substantial
* portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
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* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
* SOFTWARE.
*/
package com.oracle.truffle.polyglot;
import static com.oracle.truffle.api.CompilerDirectives.shouldNotReachHere;
import java.io.ByteArrayInputStream;
import java.io.File;
import java.io.IOException;
import java.io.InputStream;
import java.io.Reader;
import java.net.URI;
import java.net.URL;
import java.nio.charset.Charset;
import java.util.Collection;
import java.util.Map;
import java.util.Objects;
import java.util.function.Supplier;
import org.graalvm.polyglot.Source;
import org.graalvm.polyglot.impl.AbstractPolyglotImpl;
import org.graalvm.polyglot.impl.AbstractPolyglotImpl.AbstractSourceDispatch;
import org.graalvm.polyglot.io.ByteSequence;
import org.graalvm.polyglot.io.FileSystem;
import com.oracle.truffle.api.TruffleFile;
import com.oracle.truffle.api.source.Source.SourceBuilder;
class PolyglotSourceDispatch extends AbstractSourceDispatch {
private volatile Object defaultFileSystemContext;
protected PolyglotSourceDispatch(AbstractPolyglotImpl engineImpl) {
super(engineImpl);
}
@Override
public String getName(Object impl) {
com.oracle.truffle.api.source.Source source = (com.oracle.truffle.api.source.Source) impl;
return source.getName();
}
@Override
public String getPath(Object impl) {
com.oracle.truffle.api.source.Source source = (com.oracle.truffle.api.source.Source) impl;
return source.getPath();
}
@Override
public boolean isInteractive(Object impl) {
com.oracle.truffle.api.source.Source source = (com.oracle.truffle.api.source.Source) impl;
return source.isInteractive();
}
@Override
public boolean isInternal(Object impl) {
com.oracle.truffle.api.source.Source source = (com.oracle.truffle.api.source.Source) impl;
return source.isInternal();
}
@Override
public URL getURL(Object impl) {
com.oracle.truffle.api.source.Source source = (com.oracle.truffle.api.source.Source) impl;
return source.getURL();
}
@Override
public URI getURI(Object impl) {
com.oracle.truffle.api.source.Source source = (com.oracle.truffle.api.source.Source) impl;
return source.getURI();
}
@Override
public Reader getReader(Object impl) {
com.oracle.truffle.api.source.Source source = (com.oracle.truffle.api.source.Source) impl;
return source.getReader();
}
@SuppressWarnings("deprecation")
@Override
public InputStream getInputStream(Object impl) {
return new ByteArrayInputStream(getCharacters(impl).toString().getBytes());
}
@Override
public int getLength(Object impl) {
com.oracle.truffle.api.source.Source source = (com.oracle.truffle.api.source.Source) impl;
return source.getLength();
}
@Override
public CharSequence getCharacters(Object impl) {
com.oracle.truffle.api.source.Source source = (com.oracle.truffle.api.source.Source) impl;
return source.getCharacters();
}
@Override
public CharSequence getCharacters(Object impl, int lineNumber) {
com.oracle.truffle.api.source.Source source = (com.oracle.truffle.api.source.Source) impl;
return source.getCharacters(lineNumber);
}
@Override
public int getLineCount(Object impl) {
com.oracle.truffle.api.source.Source source = (com.oracle.truffle.api.source.Source) impl;
return source.getLineCount();
}
@Override
public int getLineNumber(Object impl, int offset) {
com.oracle.truffle.api.source.Source source = (com.oracle.truffle.api.source.Source) impl;
return source.getLineNumber(offset);
}
@Override
public int getColumnNumber(Object impl, int offset) {
com.oracle.truffle.api.source.Source source = (com.oracle.truffle.api.source.Source) impl;
return source.getColumnNumber(offset);
}
@Override
public int getLineStartOffset(Object impl, int lineNumber) {
com.oracle.truffle.api.source.Source source = (com.oracle.truffle.api.source.Source) impl;
return source.getLineStartOffset(lineNumber);
}
@Override
public int getLineLength(Object impl, int lineNumber) {
com.oracle.truffle.api.source.Source source = (com.oracle.truffle.api.source.Source) impl;
return source.getLineLength(lineNumber);
}
@Override
public String toString(Object impl) {
com.oracle.truffle.api.source.Source source = (com.oracle.truffle.api.source.Source) impl;
return source.toString();
}
@Override
public String getMimeType(Object impl) {
com.oracle.truffle.api.source.Source source = (com.oracle.truffle.api.source.Source) impl;
return source.getMimeType();
}
@Override
public String getLanguage(Object impl) {
com.oracle.truffle.api.source.Source source = (com.oracle.truffle.api.source.Source) impl;
return source.getLanguage();
}
@Override
public String findLanguage(File file) throws IOException {
Objects.requireNonNull(file);
String mimeType = findMimeType(file);
if (mimeType != null) {
return findLanguage(mimeType);
} else {
return null;
}
}
@Override
public String findLanguage(URL url) throws IOException {
String mimeType = findMimeType(url);
if (mimeType != null) {
return findLanguage(mimeType);
} else {
return null;
}
}
@Override
public String findMimeType(File file) throws IOException {
Objects.requireNonNull(file);
TruffleFile truffleFile = EngineAccessor.LANGUAGE.getTruffleFile(file.toPath().toString(), getDefaultFileSystemContext());
return truffleFile.detectMimeType();
}
@Override
public String findMimeType(URL url) throws IOException {
Objects.requireNonNull(url);
return EngineAccessor.SOURCE.findMimeType(url, getDefaultFileSystemContext());
}
@Override
public String findLanguage(String mimeType) {
Objects.requireNonNull(mimeType);
LanguageCache cache = LanguageCache.languageMimes().get(mimeType);
if (cache != null) {
return cache.getId();
}
return null;
}
@Override
public int hashCode(Object impl) {
return impl.hashCode();
}
@Override
public boolean equals(Object impl, Object otherImpl) {
return impl.equals(otherImpl);
}
@Override
public ByteSequence getBytes(Object impl) {
com.oracle.truffle.api.source.Source source = (com.oracle.truffle.api.source.Source) impl;
return source.getBytes();
}
@Override
public boolean hasBytes(Object impl) {
com.oracle.truffle.api.source.Source source = (com.oracle.truffle.api.source.Source) impl;
return source.hasBytes();
}
@Override
public boolean hasCharacters(Object impl) {
com.oracle.truffle.api.source.Source source = (com.oracle.truffle.api.source.Source) impl;
return source.hasCharacters();
}
@Override
public Source build(String language, Object origin, URI uri, String name, String mimeType, Object content, boolean interactive, boolean internal, boolean cached, Charset encoding)
throws IOException {
assert language != null;
SourceBuilder builder;
if (origin instanceof File) {
builder = EngineAccessor.SOURCE.newBuilder(language, (File) origin);
} else if (origin instanceof CharSequence) {
builder = com.oracle.truffle.api.source.Source.newBuilder(language, ((CharSequence) origin), name);
} else if (origin instanceof ByteSequence) {
builder = com.oracle.truffle.api.source.Source.newBuilder(language, ((ByteSequence) origin), name);
} else if (origin instanceof Reader) {
builder = com.oracle.truffle.api.source.Source.newBuilder(language, (Reader) origin, name);
} else if (origin instanceof URL) {
builder = com.oracle.truffle.api.source.Source.newBuilder(language, (URL) origin);
} else {
throw shouldNotReachHere();
}
if (origin instanceof File || origin instanceof URL) {
EngineAccessor.SOURCE.setFileSystemContext(builder, getDefaultFileSystemContext());
}
EngineAccessor.SOURCE.setEmbedderSource(builder, true);
if (content instanceof CharSequence) {
builder.content((CharSequence) content);
} else if (content instanceof ByteSequence) {
builder.content((ByteSequence) content);
}
builder.uri(uri);
builder.name(name);
builder.internal(internal);
builder.interactive(interactive);
builder.mimeType(mimeType);
builder.cached(cached);
builder.encoding(encoding);
try {
return PolyglotImpl.getOrCreatePolyglotSource(engineImpl, builder.build());
} catch (IOException e) {
throw e;
} catch (RuntimeException e) {
throw e;
} catch (Exception e) {
throw shouldNotReachHere(e);
}
}
private Object getDefaultFileSystemContext() {
Object res = defaultFileSystemContext;
if (res == null) {
synchronized (this) {
res = defaultFileSystemContext;
if (res == null) {
EmbedderFileSystemContext context = new EmbedderFileSystemContext();
res = EngineAccessor.LANGUAGE.createFileSystemContext(context, context.fileSystem);
defaultFileSystemContext = res;
}
}
}
return res;
}
static final class EmbedderFileSystemContext {
final FileSystem fileSystem = FileSystems.newDefaultFileSystem();
final Map cachedLanguages = LanguageCache.languages();
final Supplier>> fileTypeDetectors = FileSystems.newFileTypeDetectorsSupplier(cachedLanguages.values());
}
}