3 files changed, 29 insertions, 35 deletions
diff --git a/src/lang/builtin/sbuiltin.ts b/src/lang/builtin/sbuiltin.ts
index 704e688..f291de3 100644
--- a/src/lang/builtin/sbuiltin.ts
+++ b/src/lang/builtin/sbuiltin.ts
@@ -1,11 +1,5 @@
-import { ASTNode } from "../core/common";
-import {
-  CallFn,
-  FnPrim,
-  GetEvaluatedChildren,
-  StackFrame,
-  EvalError,
-} from "../core/eval";
+import { ASTNode, StackFrame } from "../core/common";
+import { CallFn, FnPrim, GetEvaluatedChildren, EvalError } from "../core/eval";
 import { ToString } from "../util";
 
 export type SBUILTIN_Call<
diff --git a/src/lang/core/common.ts b/src/lang/core/common.ts
index c1a1dc3..9e3840b 100644
--- a/src/lang/core/common.ts
+++ b/src/lang/core/common.ts
@@ -55,3 +55,18 @@ export type ParserCtx = {
   lastToken: Token | null;
   stack: readonly ASTNode[];
 };
+
+export type StackFrame<
+  Bindings extends Record<ASTNode["name"], any> = Record<ASTNode["name"], any>,
+  Parent extends StackFrame | null = any
+> = {
+  bindings: Bindings;
+  parent: Parent;
+};
+
+export type EmptyStackFrame = StackFrame<{}, null>;
+
+export type WithPushedBindings<
+  OldFrame extends StackFrame,
+  Bindings extends StackFrame["bindings"]
+> = StackFrame<Bindings, OldFrame>;
diff --git a/src/lang/core/eval.ts b/src/lang/core/eval.ts
index 258999a..3dcf9b0 100644
--- a/src/lang/core/eval.ts
+++ b/src/lang/core/eval.ts
@@ -7,21 +7,10 @@ import {
   SBUILTIN_Map,
 } from "../builtin";
 import { ToString } from "../util";
-import { ASTNode, NodeType } from "./common";
+import { ASTNode, EmptyStackFrame, NodeType, StackFrame } from "./common";
 import { Lex } from "./lexer";
 import { Parse } from "./parser";
 
-export type GetEvaluatedChildren<
-  Node extends ASTNode,
-  Frame extends StackFrame
-> = Node["children"] extends infer Children extends readonly ASTNode[]
-  ? {
-      [Idx in keyof Children]: Children[Idx] extends ASTNode
-        ? Evaluate<Children[Idx], Frame>
-        : never;
-    }
-  : never;
-
 export type SENTINEL_NO_BUILTIN = "__NO_BUILTIN__";
 export type MapBuiltins<
   Node extends ASTNode,
@@ -44,21 +33,6 @@ export type MapBuiltins<
 
 export type EvalError<T extends string> = `Eval error: ${T}`;
 
-export type StackFrame<
-  Bindings extends Record<ASTNode["name"], any> = Record<ASTNode["name"], any>,
-  Parent extends StackFrame | null = any
-> = {
-  bindings: Bindings;
-  parent: Parent;
-};
-
-export type EmptyStackFrame = StackFrame<{}, null>;
-
-export type WithPushedBindings<
-  OldFrame extends StackFrame,
-  Bindings extends StackFrame["bindings"]
-> = StackFrame<Bindings, OldFrame>;
-
 export type FindInStack<
   Frame extends StackFrame,
   NameToFind
@@ -117,6 +91,17 @@ export type Evaluate<
     : never
   : EvalError<`Unhandled node type ${Node["type"]}`>;
 
+export type GetEvaluatedChildren<
+  Node extends ASTNode,
+  Frame extends StackFrame
+> = Node["children"] extends infer Children extends readonly ASTNode[]
+  ? {
+      [Idx in keyof Children]: Children[Idx] extends ASTNode
+        ? Evaluate<Children[Idx], Frame>
+        : never;
+    }
+  : never;
+
 const input = `map(arr(5,5,5), fn(n, add(n, 1)))` as const;
 const lex_result = null as unknown as Lex<typeof input>;
 const parse_result = null as unknown as Parse<typeof lex_result>;