[kotlin debugger] IDEA-357870 Reimplement evaluatable getters filtering using metadata helper

Previously, filtering of evaluatable getters in variables view relied on bytecode inspections. Because of this, in some cases incorrect getters were shown, and also filtering was disabled completely in Android Studio.

GitOrigin-RevId: 6b86d0307526c2ffa23cf49a14d579504bd5f810

java/java-runtime/src/com/intellij/rt/debugger/MetadataDebugHelper.java

@@ -7,6 +7,8 @@ import java.nio.charset.StandardCharsets;
 import java.util.Arrays;
 
 public class MetadataDebugHelper {
+  public static final String METADATA_SEPARATOR = "\n";
+
   private static final String METADATA_CLASS_NAME = "kotlin.Metadata";
 
   private static final String KIND = "kind";
@@ -36,8 +38,14 @@ public class MetadataDebugHelper {
    * the debugger side. Any JDWP communication can be very expensive when debugging remotely,
    * especially when debugging Android applications on a phone.
    */
-  @SuppressWarnings("unchecked")
   public static String getDebugMetadataAsJson(Class<?> cls) {
+    StringBuilder sb = new StringBuilder();
+    appendDebugMetadataAsJson(sb, cls);
+    return sb.toString();
+  }
+
+  @SuppressWarnings("unchecked")
+  private static void appendDebugMetadataAsJson(StringBuilder sb, Class<?> cls) {
     try {
       Class<?> metadataClass = Class.forName(METADATA_CLASS_NAME, false, cls.getClassLoader());
       Method kindMethod = metadataClass.getDeclaredMethod(KIND_METHOD_NAME);
@@ -50,7 +58,6 @@ public class MetadataDebugHelper {
 
       Object metadata = cls.getAnnotation((Class<Annotation>)metadataClass);
 
-      StringBuilder sb = new StringBuilder();
       sb.append("{");
 
       int kind = (int)kindMethod.invoke(metadata);
@@ -75,13 +82,28 @@ public class MetadataDebugHelper {
       appendAsJsonValueNoComma(sb, EXTRA_INT, extraInt);
 
       sb.append("}");
-
-      return sb.toString();
-    } catch (Exception ex) {
-      return null;
+    } catch (Exception ignored) {
     }
   }
 
+  /*
+   * This function is used similarly to `getDebugMetadataAsJson`, when there is a need to
+   * fetch metadata for multiple classes.
+   *
+   * The return value is a concatenation of metadata JSON representations of given classes
+   * separated by MetadataDebugHelper.METADATA_SEPARATOR.
+   */
+  public static String getDebugMetadataListAsJson(Class<?>... classes) {
+    StringBuilder sb = new StringBuilder();
+    for (Class<?> cls : classes) {
+      if (sb.length() != 0) {
+        sb.append(METADATA_SEPARATOR);
+      }
+      appendDebugMetadataAsJson(sb, cls);
+    }
+    return sb.toString();
+  }
+
   private static void appendAsJsonValue(StringBuilder sb, String name, Object value) {
     appendAsJsonValueNoComma(sb, name, value).append(',');
   }