Fix Scala Native build (#647)

Author: stephenamar-db

.github/workflows/release-build.yaml

@@ -16,7 +16,7 @@ jobs:
       - uses: actions/checkout@v6
       - uses: actions/setup-java@v5
         with:
-          java-version: 17
+          java-version: 21
           distribution: 'zulu'
       - name: Set up Node.js 24
         uses: actions/setup-node@v6

sjsonnet/src-js/sjsonnet/Platform.scala

@@ -144,4 +144,6 @@ object Platform {
   }
 
   def regexQuote(s: String): String = Pattern.quote(s)
+
+  def appendMemoryStats(sb: StringBuilder): Unit = {}
 }

sjsonnet/src-jvm/sjsonnet/Platform.scala

@@ -165,4 +165,22 @@ object Platform {
       quote
     }
   }
+
+  def appendMemoryStats(sb: StringBuilder): Unit = {
+    val rt = Runtime.getRuntime
+    val usedBytes = rt.totalMemory() - rt.freeMemory()
+    val maxBytes = rt.maxMemory()
+    sb.append(formatBytesLine("heap_used", usedBytes))
+    sb.append(formatBytesLine("heap_max", maxBytes))
+  }
+
+  private def formatBytesLine(label: String, bytes: Long): String =
+    f"$label%-25s ${formatBytes(bytes)}%s%n"
+
+  private def formatBytes(bytes: Long): String = {
+    if (bytes < 1024L) s"${bytes}B"
+    else if (bytes < 1024L * 1024) f"${bytes / 1024.0}%.1fKB"
+    else if (bytes < 1024L * 1024 * 1024) f"${bytes / (1024.0 * 1024)}%.1fMB"
+    else f"${bytes / (1024.0 * 1024 * 1024)}%.2fGB"
+  }
 }

sjsonnet/src-native/sjsonnet/Platform.scala

@@ -188,4 +188,6 @@ object Platform {
       quote
     }
   }
+
+  def appendMemoryStats(sb: StringBuilder): Unit = {}
 }

sjsonnet/src/sjsonnet/DebugStats.scala

@@ -53,11 +53,7 @@ final class DebugStats {
     sb.append(formatTimeLine("materialize_time", materializeTimeNs))
     sb.append(formatTimeLine("total_time", totalTimeNs))
 
-    val rt = Runtime.getRuntime
-    val usedBytes = rt.totalMemory() - rt.freeMemory()
-    val maxBytes = rt.maxMemory()
-    sb.append(formatBytesLine("heap_used", usedBytes))
-    sb.append(formatBytesLine("heap_max", maxBytes))
+    Platform.appendMemoryStats(sb)
 
     sb.toString
   }
@@ -68,22 +64,12 @@ final class DebugStats {
   private def formatTimeLine(label: String, ns: Long): String =
     f"$label%-25s ${formatNs(ns)}%s%n"
 
-  private def formatBytesLine(label: String, bytes: Long): String =
-    f"$label%-25s ${formatBytes(bytes)}%s%n"
-
   private def formatNs(ns: Long): String = {
     if (ns < 1000L) s"${ns}ns"
     else if (ns < 1000000L) f"${ns / 1000.0}%.1fμs"
     else if (ns < 1000000000L) f"${ns / 1000000.0}%.1fms"
     else f"${ns / 1000000000.0}%.3fs"
   }
-
-  private def formatBytes(bytes: Long): String = {
-    if (bytes < 1024L) s"${bytes}B"
-    else if (bytes < 1024L * 1024) f"${bytes / 1024.0}%.1fKB"
-    else if (bytes < 1024L * 1024 * 1024) f"${bytes / (1024.0 * 1024)}%.1fMB"
-    else f"${bytes / (1024.0 * 1024 * 1024)}%.2fGB"
-  }
 }
 
 /**