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 * version 2 for more details (a copy is included in the LICENSE file that
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 * 2 along with this work; if not, write to the Free Software Foundation,
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package org.graalvm.compiler.hotspot.meta;

import java.lang.module.ModuleDescriptor.Requires;

import jdk.internal.vm.compiler.collections.EconomicSet;
import org.graalvm.compiler.phases.tiers.CompilerConfiguration;

Determines if methods in a given class can be intrinsified.
Only classes loaded from the module defining the compiler configuration or any of its transitive
dependencies can be intrinsified.
This version of the class must be used on JDK 9 or later.
/**
 * Determines if methods in a given class can be intrinsified.
 *
 * Only classes loaded from the module defining the compiler configuration or any of its transitive
 * dependencies can be intrinsified.
 *
 * This version of the class must be used on JDK 9 or later.
 */
public final class IntrinsificationPredicate {
    
Set of modules composed of the module defining the compiler configuration and its transitive
dependencies.
/**
     * Set of modules composed of the module defining the compiler configuration and its transitive
     * dependencies.
     */
    private final EconomicSet<Module> trustedModules;

    IntrinsificationPredicate(CompilerConfiguration compilerConfiguration) {
        trustedModules = EconomicSet.create();
        Module compilerConfigurationModule = compilerConfiguration.getClass().getModule();
        if (compilerConfigurationModule.getDescriptor().isAutomatic()) {
            throw new IllegalArgumentException(String.format("The module '%s' defining the Graal compiler configuration class '%s' must not be an automatic module",
                            compilerConfigurationModule.getName(), compilerConfiguration.getClass().getName()));
        }
        trustedModules.add(compilerConfigurationModule);
        for (Requires require : compilerConfigurationModule.getDescriptor().requires()) {
            for (Module module : compilerConfigurationModule.getLayer().modules()) {
                if (module.getName().equals(require.name())) {
                    trustedModules.add(module);
                }
            }
        }
    }

    public boolean apply(Class<?> declaringClass) {
        Module module = declaringClass.getModule();
        return trustedModules.contains(module);
    }
}