diff --git a/src/ast.ts b/src/ast.ts
index 3df5a02..d820f9a 100644
--- a/src/ast.ts
+++ b/src/ast.ts
@@ -1,4 +1,4 @@
-import { IntervalLabelTokenValue } from "./tokenizer";
+import { IntervalLabelTokenValue } from "./parser/tokenizer";
 
 export type Workout = {
   name: string;
diff --git a/src/index.ts b/src/index.ts
index d871f31..82816b9 100644
--- a/src/index.ts
+++ b/src/index.ts
@@ -2,7 +2,6 @@ import * as fs from "fs";
 import { generateZwo } from "./generateZwo";
 import { parse } from "./parser";
 import { stats } from "./stats";
-import { tokenize } from "./tokenizer";
 
 const opts = { stats: false, filename: "" };
 if (process.argv[2] === "--stats") {
@@ -12,7 +11,7 @@ if (process.argv[2] === "--stats") {
   opts.filename = process.argv[2];
 }
 
-const workout = parse(tokenize(fs.readFileSync(opts.filename, "utf8")));
+const workout = parse(fs.readFileSync(opts.filename, "utf8"));
 
 if (opts.stats) {
   console.log(stats(workout));
diff --git a/src/parser/index.ts b/src/parser/index.ts
new file mode 100644
index 0000000..71f2bae
--- /dev/null
+++ b/src/parser/index.ts
@@ -0,0 +1,5 @@
+import { Workout } from "../ast";
+import { parseTokens } from "./parser";
+import { tokenize } from "./tokenizer";
+
+export const parse = (source: string): Workout => parseTokens(tokenize(source));
diff --git a/src/parser.ts b/src/parser/parser.ts
similarity index 96%
rename from src/parser.ts
rename to src/parser/parser.ts
index 63af0c0..356c13a 100644
--- a/src/parser.ts
+++ b/src/parser/parser.ts
@@ -1,4 +1,4 @@
-import { Interval, Workout } from "./ast";
+import { Interval, Workout } from "../ast";
 import { isIntervalLabelTokenValue, Token } from "./tokenizer";
 
 type Header = Partial<Omit<Workout, "intervals">>;
@@ -105,7 +105,7 @@ const parseIntervals = (tokens: Token[]): Interval[] => {
   return intervals;
 };
 
-export const parse = (tokens: Token[]): Workout => {
+export const parseTokens = (tokens: Token[]): Workout => {
   const [header, intervalTokens] = parseHeader(tokens);
   return {
     name: header.name || "",
diff --git a/src/tokenizer.ts b/src/parser/tokenizer.ts
similarity index 100%
rename from src/tokenizer.ts
rename to src/parser/tokenizer.ts