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GraalVM is an ecosystem for compiling and running applications written in multiple languages.
GraalVM removes the isolation between programming languages and enables interoperability in a shared runtime.
/*
* Copyright (c) 2016, 2017, Oracle and/or its affiliates. All rights reserved.
* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
*
* This code is free software; you can redistribute it and/or modify it
* under the terms of the GNU General Public License version 2 only, as
* published by the Free Software Foundation. Oracle designates this
* particular file as subject to the "Classpath" exception as provided
* by Oracle in the LICENSE file that accompanied this code.
*
* This code is distributed in the hope that it will be useful, but WITHOUT
* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
* version 2 for more details (a copy is included in the LICENSE file that
* accompanied this code).
*
* You should have received a copy of the GNU General Public License version
* 2 along with this work; if not, write to the Free Software Foundation,
* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
*
* Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
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*/
package org.graalvm.nativeimage.c;
import java.lang.annotation.ElementType;
import java.lang.annotation.Retention;
import java.lang.annotation.RetentionPolicy;
import java.lang.annotation.Target;
import java.util.Collections;
import java.util.List;
import org.graalvm.nativeimage.c.function.CLibrary;
/**
* Defines the context for most other annotations of the C interface: the C header files that need
* to be imported, the C macros that need to be defined to properly configure these headers, and
* additional flags that should be passed to the C compiler when analyzing the definitions.
*
* @since 1.0
*/
@Retention(RetentionPolicy.RUNTIME)
@Target({ElementType.TYPE})
public @interface CContext {
/**
* Specifies which directives are used with the annotated element.
*
* @since 1.0
*/
Class value();
/**
* Describes a C context.
*
* @since 1.0
*/
interface Directives {
/**
* This method is called immediately after the constructor, to check whether the context is
* part of the configuration or not. If this method returns false, all elements registered
* inside this context are ignored.
*
* @since 1.0
*/
default boolean isInConfiguration() {
return true;
}
/**
* All header files used in this context. C allows two kinds of imports: header files can be
* surrounded with <...>, or "...". One of them must be used for every element in the
* returned list.
*
* @since 1.0
*/
default List getHeaderFiles() {
return Collections.emptyList();
}
/**
* Unparameterized macro-definitions. Each entry is in the form of or
* .
*
* @since 1.0
*/
default List getMacroDefinitions() {
return Collections.emptyList();
}
/**
* Returns options to be passed to the C compiler when processing the directives. For
* example, the option "-Ipath" can be used to add a path for the lookup of header files.
*
* @since 1.0
*/
default List getOptions() {
return Collections.emptyList();
}
/**
* Returns a collection of libraries. They are treated the same way as libraries added via
* the {@link CLibrary} annotation.
*
* @since 1.0
*/
default List getLibraries() {
return Collections.emptyList();
}
/**
* Returns a list of library paths.
*
* @since 1.0
*/
default List getLibraryPaths() {
return Collections.emptyList();
}
}
}