svm: add JVMCIReflectionUtil#getOrigin

Author: zapster

substratevm/src/com.oracle.svm.util/src/com/oracle/svm/util/JVMCIReflectionUtil.java

@@ -25,6 +25,7 @@
 package com.oracle.svm.util;
 
 import java.lang.reflect.Method;
+import java.net.URL;
 import java.util.Arrays;
 import java.util.Collections;
 import java.util.List;
@@ -282,4 +283,15 @@ public static String getTypeName(ResolvedJavaType type) {
     public static ResolvedJavaModule getModule(ResolvedJavaType declaringClass) {
         return JVMCIReflectionUtilFallback.getModule(declaringClass);
     }
+
+    /**
+     * Returns the <em>origin</em> associated with this {@link ResolvedJavaType}.
+     *
+     * This is not yet properly implemented as it falls back to the original class (GR-71068).
+     *
+     * @return the location (URL), or {@code null} if no URL was supplied during construction.
+     */
+    public static URL getOrigin(ResolvedJavaType type) {
+        return JVMCIReflectionUtilFallback.getOrigin(type);
+    }
 }

substratevm/src/com.oracle.svm.util/src/com/oracle/svm/util/JVMCIReflectionUtilFallback.java

@@ -24,6 +24,10 @@
  */
 package com.oracle.svm.util;
 
+import java.net.URL;
+import java.security.CodeSource;
+import java.security.ProtectionDomain;
+
 import jdk.vm.ci.meta.ResolvedJavaType;
 
 /**
@@ -43,4 +47,13 @@ static ResolvedJavaPackage getPackage(ResolvedJavaType type) {
     static ResolvedJavaModule getModule(ResolvedJavaType declaringClass) {
         return new ResolvedJavaModuleImpl(getJavaClass(declaringClass).getModule());
     }
+
+    static URL getOrigin(ResolvedJavaType type) {
+        ProtectionDomain pd = getJavaClass(type).getProtectionDomain();
+        CodeSource cs = pd.getCodeSource();
+        if (cs == null) {
+            return null;
+        }
+        return cs.getLocation();
+    }
 }