From b40416f06052ca158103abb59741a8ea6742cc1c Mon Sep 17 00:00:00 2001
From: Greg Brail <gbrail@users.noreply.github.com>
Date: Wed, 18 Dec 2024 15:08:05 -0800
Subject: [PATCH] Go back to the pre-Java-9 stack trace API

This is compatible with Android and also seems to be faster
---
 .../java/org/mozilla/javascript/Context.java  | 31 ++++++++-----------
 1 file changed, 13 insertions(+), 18 deletions(-)

diff --git a/rhino/src/main/java/org/mozilla/javascript/Context.java b/rhino/src/main/java/org/mozilla/javascript/Context.java
index 3f4ac58252..2dfb33c3a6 100644
--- a/rhino/src/main/java/org/mozilla/javascript/Context.java
+++ b/rhino/src/main/java/org/mozilla/javascript/Context.java
@@ -25,7 +25,6 @@
 import java.util.HashSet;
 import java.util.Locale;
 import java.util.Map;
-import java.util.Optional;
 import java.util.Set;
 import java.util.TimeZone;
 import java.util.function.Consumer;
@@ -2642,24 +2641,20 @@ static String getSourcePositionFromStack(int[] linep) {
     }
 
     /** Returns the current filename in the java stack. */
-    @SuppressWarnings("AndroidJdkLibsChecker")
-    // Android uses interpreter, so we should not get here.
     static String getSourcePositionFromJavaStack(int[] linep) {
-        Optional<StackWalker.StackFrame> frame =
-                StackWalker.getInstance()
-                        .walk(stream -> stream.filter(Context::frameMatches).findFirst());
-        return frame.map(
-                        f -> {
-                            linep[0] = f.getLineNumber();
-                            return f.getFileName();
-                        })
-                .orElse(null);
-    }
-
-    @SuppressWarnings("AndroidJdkLibsChecker")
-    private static boolean frameMatches(StackWalker.StackFrame frame) {
-        return (frame.getFileName() == null || !frame.getFileName().endsWith(".java"))
-                && frame.getLineNumber() > 0;
+        StackTraceElement[] stack = new Throwable().getStackTrace();
+        for (StackTraceElement e : stack) {
+            if (frameMatches(e)) {
+                linep[0] = e.getLineNumber();
+                return e.getFileName();
+            }
+        }
+        return null;
+    }
+
+    private static boolean frameMatches(StackTraceElement e) {
+        return (e.getFileName() == null || !e.getFileName().endsWith(".java"))
+                && e.getLineNumber() > 0;
     }
 
     RegExpProxy getRegExpProxy() {