Introducing engine/runtime-compiler project (#8197)

build.sbt

@@ -281,6 +281,7 @@ lazy val enso = (project in file("."))
     launcher,
     downloader,
     `runtime-parser`,
+    `runtime-compiler`,
     `runtime-language-epb`,
     `runtime-instrument-common`,
     `runtime-instrument-id-execution`,
@@ -1352,8 +1353,7 @@ lazy val runtime = (project in file("engine/runtime"))
       "org.typelevel"      %% "cats-core"             % catsVersion,
       "junit"               % "junit"                 % junitVersion              % Test,
       "com.github.sbt"      % "junit-interface"       % junitIfVersion            % Test,
-      "org.hamcrest"        % "hamcrest-all"          % hamcrestVersion           % Test,
-      "com.lihaoyi"        %% "fansi"                 % fansiVersion
+      "org.hamcrest"        % "hamcrest-all"          % hamcrestVersion           % Test
     ),
     Compile / compile / compileInputs := (Compile / compile / compileInputs)
       .dependsOn(CopyTruffleJAR.preCompileTask)
@@ -1418,8 +1418,7 @@ lazy val runtime = (project in file("engine/runtime"))
   .dependsOn(`logging-truffle-connector`)
   .dependsOn(`polyglot-api`)
   .dependsOn(`text-buffer`)
-  .dependsOn(`runtime-parser`)
-  .dependsOn(pkg)
+  .dependsOn(`runtime-compiler`)
   .dependsOn(`connected-lock-manager`)
   .dependsOn(testkit % Test)
   .dependsOn(`logging-service-logback` % "test->test")
@@ -1438,6 +1437,23 @@ lazy val `runtime-parser` =
     .dependsOn(syntax)
     .dependsOn(`syntax-rust-definition`)
 
+lazy val `runtime-compiler` =
+  (project in file("engine/runtime-compiler"))
+    .settings(
+      frgaalJavaCompilerSetting,
+      instrumentationSettings,
+      libraryDependencies ++= Seq(
+        "junit"          % "junit"           % junitVersion     % Test,
+        "com.github.sbt" % "junit-interface" % junitIfVersion   % Test,
+        "org.scalatest" %% "scalatest"       % scalatestVersion % Test,
+        "com.lihaoyi"   %% "fansi"           % fansiVersion
+      )
+    )
+    .dependsOn(`runtime-parser`)
+    .dependsOn(pkg)
+    .dependsOn(`polyglot-api`)
+    .dependsOn(editions)
+
 lazy val `runtime-instrument-common` =
   (project in file("engine/runtime-instrument-common"))
     .configs(Benchmark)

engine/runtime-compiler/src/main/java/org/enso/compiler/context/FramePointer.java

@@ -0,0 +1,7 @@
+package org.enso.compiler.context;
+
+/**
+ * A representation of a pointer into a stack frame at a given number of levels above the current.
+ */
+public record FramePointer(int parentLevel, int frameSlotIdx) {
+}

engine/runtime-compiler/src/main/scala/org/enso/compiler/context/InlineContext.scala

@@ -1,9 +1,9 @@
 package org.enso.compiler.context
 
 import org.enso.compiler.PackageRepository
+import org.enso.compiler.context.LocalScope
 import org.enso.compiler.data.CompilerConfig
 import org.enso.compiler.pass.PassConfiguration
-import org.enso.interpreter.runtime.scope.LocalScope
 
 /** A type containing the information about the execution context for an inline
   * expression.

engine/runtime-compiler/src/main/scala/org/enso/compiler/context/LocalScope.scala

@@ -1,6 +1,5 @@
-package org.enso.interpreter.runtime.scope
+package org.enso.compiler.context
 
-import com.oracle.truffle.api.frame.{FrameDescriptor, FrameSlotKind}
 import org.enso.compiler.pass.analyse.AliasAnalysis.Graph
 import org.enso.compiler.pass.analyse.AliasAnalysis.Graph.{
   Id,
@@ -8,11 +7,6 @@ import org.enso.compiler.pass.analyse.AliasAnalysis.Graph.{
   Scope => AliasScope
 }
 import org.enso.compiler.pass.analyse.{AliasAnalysis, DataflowAnalysis}
-import org.enso.interpreter.runtime.error.DataflowError
-import org.enso.interpreter.runtime.scope.LocalScope.{
-  internalSlots,
-  monadicStateSlotName
-}
 
 import scala.jdk.CollectionConverters._
 
@@ -45,7 +39,6 @@ class LocalScope(
   final val flattenToParent: Boolean                  = false,
   private val parentFrameSlotIdxs: Map[Graph.Id, Int] = Map()
 ) {
-  lazy val frameDescriptor: FrameDescriptor = buildFrameDescriptor()
   private lazy val localFrameSlotIdxs: Map[Graph.Id, Int] =
     gatherLocalFrameSlotIdxs()
 
@@ -82,20 +75,6 @@ class LocalScope(
     )
   }
 
-  /** Returns frame slot index to a monadic state, which is considered an internal slot.
-    * @return
-    */
-  def monadicStateSlotIdx: Int = {
-    internalSlots.zipWithIndex
-      .find { case ((_, name), _) => name == monadicStateSlotName }
-      .map(_._2)
-      .getOrElse(
-        throw new IllegalStateException(
-          s"$monadicStateSlotName slot should be present in every frame descriptor"
-        )
-      )
-  }
-
   /** Get a frame slot index for a given identifier.
     *
     * The identifier must be present in the local scope.
@@ -138,39 +117,6 @@ class LocalScope(
   def flattenBindings: java.util.Map[String, FramePointer] =
     flattenBindingsWithLevel(0).asJava
 
-  private def addInternalSlots(
-    descriptorBuilder: FrameDescriptor.Builder
-  ): Unit = {
-    for ((slotKind, name) <- internalSlots) {
-      descriptorBuilder.addSlot(slotKind, name, null)
-    }
-  }
-
-  /** Builds a [[FrameDescriptor]] from the alias analysis scope metadata for the local scope.
-    * See [[AliasAnalysis.Graph.Scope.allDefinitions]].
-    *
-    * @return [[FrameDescriptor]] built from the variable definitions in the local scope.
-    */
-  private def buildFrameDescriptor(): FrameDescriptor = {
-    val descriptorBuilder = FrameDescriptor.newBuilder()
-    addInternalSlots(descriptorBuilder)
-    for (definition <- scope.allDefinitions) {
-      val returnedFrameIdx =
-        descriptorBuilder.addSlot(
-          FrameSlotKind.Illegal,
-          definition.symbol,
-          null
-        )
-      assert(localFrameSlotIdxs(definition.id) == returnedFrameIdx)
-    }
-    descriptorBuilder.defaultValue(DataflowError.UNINITIALIZED)
-    val frameDescriptor = descriptorBuilder.build()
-    assert(
-      internalSlots.length + localFrameSlotIdxs.size == frameDescriptor.getNumberOfSlots
-    )
-    frameDescriptor
-  }
-
   /** Gather local variables from the alias scope information.
     * Does not include any variables from the parent scopes.
     * @return Mapping of local variable identifiers to their
@@ -179,7 +125,7 @@ class LocalScope(
     */
   private def gatherLocalFrameSlotIdxs(): Map[Id, Int] = {
     scope.allDefinitions.zipWithIndex.map { case (definition, i) =>
-      definition.id -> (i + internalSlots.size)
+      definition.id -> (i + LocalScope.internalSlotsSize)
     }.toMap
   }
 
@@ -207,13 +153,12 @@ class LocalScope(
   }
 
   override def toString: String = {
-    s"LocalScope(${frameDescriptor.toString})"
+    s"LocalScope(${allFrameSlotIdxs.keySet})"
   }
 }
 object LocalScope {
 
-  /** Constructs a local scope for an
-    * [[org.enso.interpreter.node.EnsoRootNode]].
+  /** Constructs a local scope for an [[EnsoRootNode]].
     *
     * @return a defaulted local scope
     */
@@ -227,13 +172,11 @@ object LocalScope {
     )
   }
 
-  private val monadicStateSlotName = "<<monadic_state>>"
-
   /** Internal slots are prepended at the beginning of every [[FrameDescriptor]].
     * Every tuple of the list denotes frame slot kind and its name.
     * Note that `info` for a frame slot is not used by Enso.
     */
-  def internalSlots: List[(FrameSlotKind, String)] = List(
-    (FrameSlotKind.Object, monadicStateSlotName)
-  )
+  def monadicStateSlotName: String   = "<<monadic_state>>"
+  private def internalSlotsSize: Int = 1
+
 }

engine/runtime-instrument-common/src/test/scala/org/enso/compiler/test/context/ChangesetBuilderTest.scala

@@ -14,7 +14,7 @@ import org.enso.compiler.core.ir.expression.errors
 import org.enso.compiler.core.ir.module.scope.definition
 import org.enso.compiler.pass.PassManager
 import org.enso.compiler.test.CompilerTest
-import org.enso.interpreter.runtime.scope.LocalScope
+import org.enso.compiler.context.LocalScope
 import org.enso.text.buffer.Rope
 import org.enso.text.editing.JavaEditorAdapter
 import org.enso.text.editing.model.{Position, Range, TextEdit}

engine/runtime-instrument-repl-debugger/src/main/java/org/enso/interpreter/instrument/ReplDebuggerInstrument.java

@@ -17,6 +17,7 @@ import java.net.URI;
 import java.util.Collections;
 import java.util.HashMap;
 import java.util.Map;
+import org.enso.compiler.context.FramePointer;
 import org.enso.interpreter.node.expression.builtin.debug.DebugBreakpointNode;
 import org.enso.interpreter.node.expression.builtin.text.util.ToJavaStringNode;
 import org.enso.interpreter.node.expression.debug.CaptureResultScopeNode;
@@ -25,7 +26,6 @@ import org.enso.interpreter.runtime.EnsoContext;
 import org.enso.interpreter.runtime.callable.CallerInfo;
 import org.enso.interpreter.runtime.callable.function.Function;
 import org.enso.interpreter.runtime.data.text.Text;
-import org.enso.interpreter.runtime.scope.FramePointer;
 import org.enso.interpreter.runtime.state.State;
 import org.enso.polyglot.debugger.DebugServerInfo;
 import org.graalvm.options.OptionDescriptor;
@@ -105,12 +105,12 @@ public class ReplDebuggerInstrument extends TruffleInstrument {
     }
 
     private Object getValue(MaterializedFrame frame, FramePointer ptr) {
-      return getProperFrame(frame, ptr).getValue(ptr.getFrameSlotIdx());
+      return getProperFrame(frame, ptr).getValue(ptr.frameSlotIdx());
     }
 
     private MaterializedFrame getProperFrame(MaterializedFrame frame, FramePointer ptr) {
       MaterializedFrame currentFrame = frame;
-      for (int i = 0; i < ptr.getParentLevel(); i++) {
+      for (int i = 0; i < ptr.parentLevel(); i++) {
         currentFrame = Function.ArgumentsHelper.getLocalScope(currentFrame.getArguments());
       }
       return currentFrame;

engine/runtime/src/main/java/org/enso/interpreter/EnsoLanguage.java

@@ -24,7 +24,7 @@ import org.enso.interpreter.node.ExpressionNode;
 import org.enso.interpreter.node.ProgramRootNode;
 import org.enso.interpreter.runtime.EnsoContext;
 import org.enso.interpreter.runtime.IrToTruffle;
-import org.enso.interpreter.runtime.scope.LocalScope;
+import org.enso.compiler.context.LocalScope;
 import org.enso.interpreter.runtime.state.ExecutionEnvironment;
 import org.enso.interpreter.runtime.tag.AvoidIdInstrumentationTag;
 import org.enso.interpreter.runtime.tag.IdentifiedTag;

engine/runtime/src/main/java/org/enso/interpreter/node/ClosureRootNode.java

@@ -5,8 +5,8 @@ import com.oracle.truffle.api.dsl.ReportPolymorphism;
 import com.oracle.truffle.api.frame.VirtualFrame;
 import com.oracle.truffle.api.nodes.NodeInfo;
 import com.oracle.truffle.api.source.SourceSection;
+import org.enso.compiler.context.LocalScope;
 import org.enso.interpreter.EnsoLanguage;
-import org.enso.interpreter.runtime.scope.LocalScope;
 import org.enso.interpreter.runtime.scope.ModuleScope;
 
 /**

engine/runtime/src/main/java/org/enso/interpreter/node/EnsoRootNode.java

@@ -4,11 +4,18 @@ import com.oracle.truffle.api.nodes.NodeInfo;
 import com.oracle.truffle.api.nodes.RootNode;
 import com.oracle.truffle.api.source.Source;
 import com.oracle.truffle.api.source.SourceSection;
+
 import java.util.Objects;
+
 import org.enso.interpreter.EnsoLanguage;
 import org.enso.interpreter.runtime.EnsoContext;
-import org.enso.interpreter.runtime.scope.LocalScope;
+import org.enso.interpreter.runtime.error.DataflowError;
+import org.enso.compiler.context.LocalScope;
 import org.enso.interpreter.runtime.scope.ModuleScope;
+import org.enso.interpreter.util.ScalaConversions;
+
+import com.oracle.truffle.api.frame.FrameDescriptor;
+import com.oracle.truffle.api.frame.FrameSlotKind;
 
 /** A common base class for all kinds of root node in Enso. */
 @NodeInfo(shortName = "Root", description = "A root node for Enso computations")
@@ -35,7 +42,7 @@ public abstract class EnsoRootNode extends RootNode {
       ModuleScope moduleScope,
       String name,
       SourceSection sourceSection) {
-    super(language, localScope.frameDescriptor());
+    super(language, buildFrameDescriptor(localScope));
     Objects.requireNonNull(language);
     this.name = name;
     this.localScope = localScope;
@@ -49,6 +56,26 @@ public abstract class EnsoRootNode extends RootNode {
     this.sourceLength = sourceSection == null ? NO_SOURCE : sourceSection.getCharLength();
   }
 
+  /**
+   * Builds a {@link FrameDescriptor} from the alias analysis scope metadata
+   * for the local scope. See [[AliasAnalysis.Graph.Scope.allDefinitions]].
+   *
+   * @return {@link FrameDescriptor} built from the variable definitions in
+   * the local localScope.
+   */
+  private static FrameDescriptor buildFrameDescriptor(LocalScope localScope) {
+    var descriptorBuilder = FrameDescriptor.newBuilder();
+    descriptorBuilder.addSlot(FrameSlotKind.Object, LocalScope.monadicStateSlotName(), null);
+    for (var definition : ScalaConversions.asJava(localScope.scope().allDefinitions())) {
+      descriptorBuilder.addSlot(
+        FrameSlotKind.Illegal, definition.symbol(), null
+      );
+    }
+    descriptorBuilder.defaultValue(DataflowError.UNINITIALIZED);
+    var frameDescriptor = descriptorBuilder.build();
+    return frameDescriptor;
+  }
+
   /**
    * Gets a reference to the language context associated with this program.
    *

engine/runtime/src/main/java/org/enso/interpreter/node/MethodRootNode.java

@@ -3,12 +3,12 @@ package org.enso.interpreter.node;
 import java.util.function.Supplier;
 
 import org.enso.compiler.core.CompilerError;
+import org.enso.compiler.context.LocalScope;
 import org.enso.interpreter.EnsoLanguage;
 import org.enso.interpreter.runtime.EnsoContext;
 import org.enso.interpreter.runtime.data.Type;
 import org.enso.interpreter.runtime.data.text.Text;
 import org.enso.interpreter.runtime.error.PanicException;
-import org.enso.interpreter.runtime.scope.LocalScope;
 import org.enso.interpreter.runtime.scope.ModuleScope;
 
 import com.oracle.truffle.api.CompilerDirectives;

engine/runtime/src/main/java/org/enso/interpreter/node/callable/CaptureCallerInfoNode.java

@@ -10,9 +10,9 @@ import com.oracle.truffle.api.dsl.Specialization;
 import com.oracle.truffle.api.frame.MaterializedFrame;
 import com.oracle.truffle.api.nodes.Node;
 import com.oracle.truffle.api.nodes.NodeInfo;
+import org.enso.compiler.context.LocalScope;
 import org.enso.interpreter.node.EnsoRootNode;
 import org.enso.interpreter.runtime.callable.CallerInfo;
-import org.enso.interpreter.runtime.scope.LocalScope;
 import org.enso.interpreter.runtime.scope.ModuleScope;
 
 /**

engine/runtime/src/main/java/org/enso/interpreter/node/expression/debug/EvalNode.java

@@ -8,6 +8,7 @@ import com.oracle.truffle.api.dsl.ReportPolymorphism;
 import com.oracle.truffle.api.dsl.Specialization;
 import com.oracle.truffle.api.nodes.NodeInfo;
 import org.enso.compiler.context.InlineContext;
+import org.enso.compiler.context.LocalScope;
 import org.enso.interpreter.Constants;
 import org.enso.interpreter.node.BaseNode;
 import org.enso.interpreter.node.ClosureRootNode;
@@ -18,7 +19,6 @@ import org.enso.interpreter.runtime.IrToTruffle;
 import org.enso.interpreter.runtime.callable.CallerInfo;
 import org.enso.interpreter.runtime.callable.function.Function;
 import org.enso.interpreter.runtime.data.text.Text;
-import org.enso.interpreter.runtime.scope.LocalScope;
 import org.enso.interpreter.runtime.scope.ModuleScope;
 import org.enso.interpreter.runtime.state.State;
 

engine/runtime/src/main/java/org/enso/interpreter/node/scope/ReadLocalVariableNode.java

@@ -8,9 +8,9 @@ import com.oracle.truffle.api.frame.MaterializedFrame;
 import com.oracle.truffle.api.frame.VirtualFrame;
 import com.oracle.truffle.api.nodes.ExplodeLoop;
 import com.oracle.truffle.api.nodes.NodeInfo;
+import org.enso.compiler.context.FramePointer;
 import org.enso.interpreter.node.ExpressionNode;
 import org.enso.interpreter.runtime.callable.function.Function;
-import org.enso.interpreter.runtime.scope.FramePointer;
 
 /**
  * Reads from a local target (variable or call target).
@@ -45,10 +45,10 @@ public abstract class ReadLocalVariableNode extends ExpressionNode {
    */
   @Specialization(rewriteOn = FrameSlotTypeException.class)
   protected long readLong(VirtualFrame frame) throws FrameSlotTypeException {
-    if (getFramePointer().getParentLevel() == 0)
-      return frame.getLong(getFramePointer().getFrameSlotIdx());
+    if (getFramePointer().parentLevel() == 0)
+      return frame.getLong(getFramePointer().frameSlotIdx());
     MaterializedFrame currentFrame = getProperFrame(frame);
-    return currentFrame.getLong(getFramePointer().getFrameSlotIdx());
+    return currentFrame.getLong(getFramePointer().frameSlotIdx());
   }
 
   /**
@@ -61,18 +61,18 @@ public abstract class ReadLocalVariableNode extends ExpressionNode {
    */
   @Specialization(rewriteOn = FrameSlotTypeException.class)
   protected Object readGeneric(VirtualFrame frame) throws FrameSlotTypeException {
-    if (getFramePointer().getParentLevel() == 0)
-      return frame.getObject(getFramePointer().getFrameSlotIdx());
+    if (getFramePointer().parentLevel() == 0)
+      return frame.getObject(getFramePointer().frameSlotIdx());
     MaterializedFrame currentFrame = getProperFrame(frame);
-    return currentFrame.getObject(getFramePointer().getFrameSlotIdx());
+    return currentFrame.getObject(getFramePointer().frameSlotIdx());
   }
 
   @Specialization
   protected Object readGenericValue(VirtualFrame frame) {
-    if (getFramePointer().getParentLevel() == 0)
-      return frame.getValue(getFramePointer().getFrameSlotIdx());
+    if (getFramePointer().parentLevel() == 0)
+      return frame.getValue(getFramePointer().frameSlotIdx());
     MaterializedFrame currentFrame = getProperFrame(frame);
-    return currentFrame.getValue(getFramePointer().getFrameSlotIdx());
+    return currentFrame.getValue(getFramePointer().frameSlotIdx());
   }
 
   /**
@@ -97,7 +97,7 @@ public abstract class ReadLocalVariableNode extends ExpressionNode {
   @ExplodeLoop
   public MaterializedFrame getProperFrame(Frame frame) {
     MaterializedFrame currentFrame = getParentFrame(frame);
-    for (int i = 1; i < getFramePointer().getParentLevel(); i++) {
+    for (int i = 1; i < getFramePointer().parentLevel(); i++) {
       currentFrame = getParentFrame(currentFrame);
     }
     return currentFrame;

engine/runtime/src/main/java/org/enso/interpreter/runtime/Module.java

@@ -23,6 +23,7 @@ import java.util.UUID;
 import java.util.WeakHashMap;
 import java.util.logging.Level;
 import org.enso.compiler.context.CompilerContext;
+import org.enso.compiler.context.LocalScope;
 import org.enso.compiler.context.SimpleUpdate;
 import org.enso.compiler.core.IR;
 import org.enso.compiler.core.ir.Expression;
@@ -37,7 +38,6 @@ import org.enso.interpreter.runtime.data.EnsoObject;
 import org.enso.interpreter.runtime.data.Type;
 import org.enso.interpreter.runtime.data.text.Text;
 import org.enso.interpreter.runtime.data.vector.ArrayLikeHelpers;
-import org.enso.interpreter.runtime.scope.LocalScope;
 import org.enso.interpreter.runtime.scope.ModuleScope;
 import org.enso.interpreter.runtime.type.Types;
 import org.enso.pkg.Package;

engine/runtime/src/main/java/org/enso/interpreter/runtime/callable/CallerInfo.java

@@ -1,7 +1,7 @@
 package org.enso.interpreter.runtime.callable;
 
 import com.oracle.truffle.api.frame.MaterializedFrame;
-import org.enso.interpreter.runtime.scope.LocalScope;
+import org.enso.compiler.context.LocalScope;
 import org.enso.interpreter.runtime.scope.ModuleScope;
 
 /**

engine/runtime/src/main/java/org/enso/interpreter/runtime/callable/atom/AtomConstructor.java

@@ -13,6 +13,7 @@ import com.oracle.truffle.api.nodes.RootNode;
 import com.oracle.truffle.api.source.SourceSection;
 import java.util.concurrent.locks.Lock;
 import java.util.concurrent.locks.ReentrantLock;
+import org.enso.compiler.context.LocalScope;
 import org.enso.interpreter.EnsoLanguage;
 import org.enso.interpreter.node.ClosureRootNode;
 import org.enso.interpreter.node.ExpressionNode;
@@ -29,7 +30,6 @@ import org.enso.interpreter.runtime.callable.function.FunctionSchema;
 import org.enso.interpreter.runtime.data.EnsoObject;
 import org.enso.interpreter.runtime.data.Type;
 import org.enso.interpreter.runtime.library.dispatch.TypesLibrary;
-import org.enso.interpreter.runtime.scope.LocalScope;
 import org.enso.interpreter.runtime.scope.ModuleScope;
 import org.enso.pkg.QualifiedName;
 

engine/runtime/src/main/java/org/enso/interpreter/runtime/scope/DebugLocalScope.java

@@ -16,6 +16,7 @@ import java.util.List;
 import java.util.Map;
 import java.util.Map.Entry;
 import java.util.stream.Collectors;
+import org.enso.compiler.context.FramePointer;
 import org.enso.interpreter.EnsoLanguage;
 import org.enso.interpreter.node.EnsoRootNode;
 import org.enso.interpreter.runtime.callable.function.Function;
@@ -100,9 +101,9 @@ public class DebugLocalScope implements EnsoObject {
 
     int maxParentLevel =
         bindings.values().stream()
-            .max(Comparator.comparingInt(FramePointer::getParentLevel))
+            .max(Comparator.comparingInt(FramePointer::parentLevel))
             .orElseThrow()
-            .getParentLevel();
+            .parentLevel();
 
     // Get all binding names for a particular parent level
     List<List<String>> bindingsByLevels = new ArrayList<>(maxParentLevel + 1);
@@ -110,7 +111,7 @@ public class DebugLocalScope implements EnsoObject {
       final int finalLevel = level;
       List<String> levelBindings =
           bindings.entrySet().stream()
-              .filter(entry -> entry.getValue().getParentLevel() == finalLevel)
+              .filter(entry -> entry.getValue().parentLevel() == finalLevel)
               .map(Entry::getKey)
               .collect(Collectors.toList());
       bindingsByLevels.add(levelBindings);
@@ -253,18 +254,18 @@ public class DebugLocalScope implements EnsoObject {
   }
 
   private Object getValue(MaterializedFrame frame, FramePointer ptr) {
-    return ptr == null ? null : getProperFrame(frame, ptr).getValue(ptr.getFrameSlotIdx());
+    return ptr == null ? null : getProperFrame(frame, ptr).getValue(ptr.frameSlotIdx());
   }
 
   private void setValue(MaterializedFrame frame, FramePointer ptr, Object value) {
     assert ptr != null;
     MaterializedFrame properFrame = getProperFrame(frame, ptr);
-    properFrame.setObject(ptr.getFrameSlotIdx(), value);
+    properFrame.setObject(ptr.frameSlotIdx(), value);
   }
 
   private MaterializedFrame getProperFrame(MaterializedFrame frame, FramePointer ptr) {
     MaterializedFrame currentFrame = frame;
-    for (int i = 0; i < ptr.getParentLevel(); i++) {
+    for (int i = 0; i < ptr.parentLevel(); i++) {
       currentFrame = Function.ArgumentsHelper.getLocalScope(currentFrame.getArguments());
     }
     return currentFrame;

engine/runtime/src/main/java/org/enso/interpreter/runtime/scope/FramePointer.java

@@ -1,38 +0,0 @@
-package org.enso.interpreter.runtime.scope;
-
-/**
- * A representation of a pointer into a stack frame at a given number of levels above the current.
- */
-public class FramePointer {
-  private final int parentLevel;
-  private final int frameSlotIdx;
-
-  /**
-   * A representation of a frame slot at a given level above the current frame.
-   *
-   * @param parentLevel the number of parents to move from the current frame to get here
-   * @param frameSlotIdx the index of the slot in the n-th parent frame
-   */
-  public FramePointer(int parentLevel, int frameSlotIdx) {
-    this.parentLevel = parentLevel;
-    this.frameSlotIdx = frameSlotIdx;
-  }
-
-  /**
-   * Gets the parent level.
-   *
-   * @return the parent level represented by this {@code FramePointer}
-   */
-  public int getParentLevel() {
-    return parentLevel;
-  }
-
-  /**
-   * Gets the index of the frame slot.
-   *
-   * @return the frame slot index represented by this {@code FramePointer}
-   */
-  public int getFrameSlotIdx() {
-    return frameSlotIdx;
-  }
-}

engine/runtime/src/main/scala/org/enso/interpreter/runtime/IrToTruffle.scala

@@ -3,6 +3,8 @@ package org.enso.interpreter.runtime
 import com.oracle.truffle.api.source.{Source, SourceSection}
 import com.oracle.truffle.api.interop.InteropLibrary
 import org.enso.compiler.context.CompilerContext
+import org.enso.compiler.context.FramePointer
+import org.enso.compiler.context.LocalScope
 import org.enso.compiler.core.CompilerError
 import org.enso.compiler.core.ConstantsNames
 import org.enso.compiler.core.Implicits.AsMetadata
@@ -104,11 +106,7 @@ import org.enso.interpreter.runtime.callable.{
 }
 import org.enso.interpreter.runtime.data.Type
 import org.enso.interpreter.runtime.data.text.Text
-import org.enso.interpreter.runtime.scope.{
-  FramePointer,
-  LocalScope,
-  ModuleScope
-}
+import org.enso.interpreter.runtime.scope.{ModuleScope}
 import org.enso.interpreter.{Constants, EnsoLanguage}
 
 import java.math.BigInteger

engine/runtime/src/test/scala/org/enso/compiler/test/CompilerTest.scala

@@ -15,7 +15,7 @@ import org.scalatest.matchers.should.Matchers
 import org.scalatest.wordspec.AnyWordSpecLike
 import org.enso.interpreter.runtime
 import org.enso.interpreter.runtime.ModuleTestUtils
-import org.enso.interpreter.runtime.scope.LocalScope
+import org.enso.compiler.context.LocalScope
 import org.enso.pkg.QualifiedName
 import org.enso.polyglot.CompilationStage
 

engine/runtime/src/test/scala/org/enso/compiler/test/pass/analyse/DataflowAnalysisTest.scala

@@ -26,7 +26,7 @@ import org.enso.compiler.pass.analyse.DataflowAnalysis.{
 import org.enso.compiler.pass.analyse.{AliasAnalysis, DataflowAnalysis}
 import org.enso.compiler.pass.{PassConfiguration, PassGroup, PassManager}
 import org.enso.compiler.test.CompilerTest
-import org.enso.interpreter.runtime.scope.LocalScope
+import org.enso.compiler.context.LocalScope
 import org.enso.interpreter.test.Metadata
 import org.scalatest.Assertion
 

engine/runtime/src/test/scala/org/enso/compiler/test/pass/analyse/DemandAnalysisTest.scala

@@ -15,7 +15,7 @@ import org.enso.compiler.pass.PassConfiguration._
 import org.enso.compiler.pass.analyse.{AliasAnalysis, DemandAnalysis}
 import org.enso.compiler.pass.{PassConfiguration, PassGroup, PassManager}
 import org.enso.compiler.test.CompilerTest
-import org.enso.interpreter.runtime.scope.LocalScope
+import org.enso.compiler.context.LocalScope
 
 class DemandAnalysisTest extends CompilerTest {
 

engine/runtime/src/test/scala/org/enso/compiler/test/pass/analyse/TailCallTest.scala

@@ -18,7 +18,7 @@ import org.enso.compiler.pass.analyse.TailCall.TailPosition
 import org.enso.compiler.pass.analyse.{AliasAnalysis, TailCall}
 import org.enso.compiler.pass.{PassConfiguration, PassGroup, PassManager}
 import org.enso.compiler.test.CompilerTest
-import org.enso.interpreter.runtime.scope.LocalScope
+import org.enso.compiler.context.LocalScope
 
 class TailCallTest extends CompilerTest {
 

engine/runtime/src/test/scala/org/enso/compiler/test/pass/lint/UnusedBindingsTest.scala

@@ -10,7 +10,7 @@ import org.enso.compiler.pass.analyse._
 import org.enso.compiler.pass.lint.UnusedBindings
 import org.enso.compiler.pass.{PassConfiguration, PassGroup, PassManager}
 import org.enso.compiler.test.CompilerTest
-import org.enso.interpreter.runtime.scope.LocalScope
+import org.enso.compiler.context.LocalScope
 import org.scalatest.Inside
 
 class UnusedBindingsTest extends CompilerTest with Inside {

engine/runtime/src/test/scala/org/enso/compiler/test/pass/optimise/LambdaConsolidateTest.scala

@@ -17,7 +17,7 @@ import org.enso.compiler.pass.analyse.AliasAnalysis
 import org.enso.compiler.pass.optimise.LambdaConsolidate
 import org.enso.compiler.pass.{PassConfiguration, PassGroup, PassManager}
 import org.enso.compiler.test.CompilerTest
-import org.enso.interpreter.runtime.scope.LocalScope
+import org.enso.compiler.context.LocalScope
 
 class LambdaConsolidateTest extends CompilerTest {
 

engine/runtime/src/test/scala/org/enso/compiler/test/pass/resolve/SuspendedArgumentsTest.scala

@@ -12,7 +12,7 @@ import org.enso.compiler.pass.analyse.AliasAnalysis
 import org.enso.compiler.pass.resolve.SuspendedArguments
 import org.enso.compiler.pass.{PassConfiguration, PassGroup, PassManager}
 import org.enso.compiler.test.CompilerTest
-import org.enso.interpreter.runtime.scope.LocalScope
+import org.enso.compiler.context.LocalScope
 import org.enso.compiler.pass.PassConfiguration._
 
 class SuspendedArgumentsTest extends CompilerTest {