From e9f3c782bc10d4c5c44faf768aa60cd6bcc66574 Mon Sep 17 00:00:00 2001
From: Kai Stevenson <kai@kaistevenson.com>
Date: Sun, 2 Nov 2025 18:08:16 -0800
Subject: refactor

---
 src/lang/core/common.ts | 57 +++++++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 57 insertions(+)
 create mode 100644 src/lang/core/common.ts

(limited to 'src/lang/core/common.ts')

diff --git a/src/lang/core/common.ts b/src/lang/core/common.ts
new file mode 100644
index 0000000..c1a1dc3
--- /dev/null
+++ b/src/lang/core/common.ts
@@ -0,0 +1,57 @@
+export enum TokenType {
+  OPEN_PAREN = "(",
+  CLOSE_PAREN = ")",
+  SPACE = " ",
+  SEMICOLON = ";",
+  COMMA = ",",
+  NAME = "NAME",
+}
+
+export enum TokenSubType {
+  NA = "NA",
+  LITERAL = "LITERAL",
+  REFERENCE = "REFERENCE",
+}
+
+export type Token<
+  Type extends TokenType = TokenType,
+  Name extends string = string
+> = {
+  type: Type;
+  name: Name;
+};
+
+export type LexerCtx = {
+  next: string;
+  nameCollection: string;
+  tokens: readonly Token[];
+};
+
+export enum NodeType {
+  INT = "INT",
+  EXT = "EXT",
+  PARSER_ERROR = "PARSER_ERROR",
+}
+
+export type ASTNode<
+  Type extends NodeType = NodeType,
+  Name extends string = string,
+  Value extends any = any,
+  Children extends readonly ASTNode[] = readonly ASTNode<
+    NodeType,
+    string,
+    any,
+    any
+  >[]
+> = {
+  type: Type;
+  name: Name;
+  value: Value;
+  children: Children;
+};
+
+export type ParserCtx = {
+  remainingTokens: readonly Token[];
+  lastToken: Token | null;
+  stack: readonly ASTNode[];
+};
-- 
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