Fix review comments

packages/squiggle-lang/__tests__/ReducerProject/ReducerProject_test.res

@@ -199,3 +199,42 @@ describe("project with independent sources", () => {
     expect(Project.getRunOrderFor(project, "second")) == ["second"]
   })
 })
+
+describe("project serialization", () => {
+  let project = Project.createProject()
+  Project.setSource(project, "first", "x = 1")
+  Project.setSource(project, "second", "y = 1")
+  Project.setSource(project, "main", "x + y")
+  Project.setContinues(project, "main", ["first", "second"])
+  let expectedJson: Project.reducerProjectJson = {
+    environment: {
+      sampleCount: 10000,
+      xyPointLength: 1000,
+    },
+    items: [
+      {
+        continues: [],
+        id: "first",
+        source: "x = 1",
+      },
+      {
+        continues: ["first", "second"],
+        id: "main",
+        source: "x + y",
+      },
+      {
+        continues: [],
+        id: "second",
+        source: "y = 1",
+      },
+    ],
+  }
+
+  test("serializes correctly", () => {
+    expect(Project.toJson(project)) == expectedJson
+  })
+
+  test("serializes reflexive", () => {
+    expect(Project.toJson(Project.fromJson(Project.toJson(project)))) == Project.toJson(project)
+  })
+})

packages/squiggle-lang/scripts/lib.mjs

@@ -22,20 +22,28 @@ export const run = (src, { output, sampleCount } = {}) => {
     });
   }
   project.setSource("main", src);
-  const time = measure(() => project.run("main"));
+  runProject(project, output);
+};
 
-  const bindings = project.getBindings("main");
-  const result = project.getResult("main");
+export const runProject = (project, { output }) => {
+  const time = measure(() => project.runAll());
+  console.log("Time: ", time);
 
+  const ids = project.getSourceIds();
+
+  ids.forEach((id) => {
+    const result = project.getResult(id);
+    const bindings = project.getBindings(id);
+
+    console.log(id + ":");
     if (output) {
       console.log("Result:", result.tag, result.value.toString());
       console.log("Bindings:", bindings.toString());
     }
 
     console.log(
-    "Time:",
-    String(time),
       result.tag === "Error" ? red(result.tag) : green(result.tag),
-    result.tag === "Error" ? result.value.toStringWithFrameStack() : ""
+      result.tag === "Error" ? result.value.toString() : ""
     );
+  });
 };

packages/squiggle-lang/scripts/run-project.mjs

@@ -0,0 +1,28 @@
+#!/usr/bin/env node
+import fs from "fs";
+
+import { Command } from "commander";
+
+import { SqProject } from "@quri/squiggle-lang";
+import { runProject } from "./lib.mjs";
+
+const program = new Command();
+
+program.option("-o, --output");
+program.arguments("<string>");
+
+const options = program.parse(process.argv);
+
+const sampleCount = process.env.SAMPLE_COUNT;
+console.log(sampleCount);
+
+const src = fs.readFileSync(program.args[0], "utf-8");
+if (!src) {
+  throw new Error("Expected src");
+}
+
+const projectJson = JSON.parse(src);
+
+const project = SqProject.fromJson(projectJson);
+
+runProject(project, options);

packages/squiggle-lang/src/js/SqProject.ts

@@ -119,4 +119,12 @@ export class SqProject {
   getEnvironment(): environment {
     return RSProject.getEnvironment(this._value);
   }
+
+  toJSON(): RSProject.reducerProjectJson {
+    return RSProject.toJson(this._value);
+  }
+
+  static fromJson(projectJson: RSProject.reducerProjectJson): SqProject {
+    return new SqProject(RSProject.fromJson(projectJson));
+  }
 }

packages/squiggle-lang/src/rescript/ForTS/ForTS_ReducerProject.res

@@ -1,4 +1,5 @@
 @genType type reducerProject = ReducerProject_T.project //re-export
+@genType type reducerProjectJson = ReducerProject_T.projectJson //re-export
 
 type error = SqError.t //use
 type errorMessage = SqError.Message.t //use
@@ -215,3 +216,30 @@ let setEnvironment = (project: reducerProject, environment: environment): unit =
 
 @genType
 let getEnvironment = (project: reducerProject): environment => project->Private.getEnvironment
+
+@genType
+let toJson = (project: reducerProject): reducerProjectJson => project->Private.toJson
+
+@genType
+let fromJson = (project: reducerProjectJson): reducerProject => project->Private.fromJson
+
+/*
+Foreign function interface is intentionally demolished.
+There is another way to do that: Umur.
+Also there is no more conversion from javascript to squiggle values currently.
+If the conversion to the new project is too difficult, I can add it later.
+*/
+
+// let foreignFunctionInterface = (
+//   lambdaValue: squiggleValue_Lambda,
+//   argArray: array<squiggleValue>,
+//   environment: environment,
+// ): result<squiggleValue, reducerErrorValue> => {
+//   let accessors = ReducerProject_ProjectAccessors_T.identityAccessorsWithEnvironment(environment)
+//   Reducer_Expression_Lambda.foreignFunctionInterface(
+//     lambdaValue,
+//     argArray,
+//     accessors,
+//     Reducer_Expression.reduceExpressionInProject,
+//   )
+// }

packages/squiggle-lang/src/rescript/Reducer/Reducer_T.res

@@ -1,3 +1,4 @@
+@genType
 type environment = GenericDist.env
 
 @genType.opaque

packages/squiggle-lang/src/rescript/ReducerProject/ReducerProject.res

@@ -150,6 +150,28 @@ let setEnvironment = (project: t, value: Reducer_T.environment): unit => {
   project.environment = value
 }
 
+let toJson = (project: t): T.projectJson => {
+  items: Belt.Array.map(Belt.MutableMap.String.toArray(project.items), ((id, projectItem)) => {
+    let projectItem: T.projectItemJson = {
+      id: id,
+      source: ProjectItem.getSource(projectItem),
+      continues: ProjectItem.getContinues(projectItem),
+    }
+    projectItem
+  }),
+  environment: getEnvironment(project),
+}
+
+let fromJson = (json: T.projectJson): t => {
+  let project = createProject()
+  setEnvironment(project, json.environment)
+  Belt.Array.forEach(json.items, item => {
+    setSource(project, item.id, item.source)
+    setContinues(project, item.id, item.continues)
+  })
+  project
+}
+
 let getBindings = (project: t, sourceId: string): Reducer_T.namespace => {
   project->getItem(sourceId)->ProjectItem.getContinuation
 }

packages/squiggle-lang/src/rescript/ReducerProject/ReducerProject_T.res

@@ -7,8 +7,22 @@ type project = {
   mutable environment: Reducer_T.environment,
   mutable previousRunOrder: array<string>,
 }
+
 type t = project
 
+@genType
+type projectItemJson = {
+  id: string,
+  source: string,
+  continues: array<string>,
+}
+
+@genType
+type projectJson = {
+  items: array<projectItemJson>,
+  environment: Reducer_T.environment,
+}
+
 // these functions are used in ReducerProject_Topology, so they are defined here to avoid circular dependencies
 let getSourceIds = (project: t): array<string> => Belt.MutableMap.String.keysToArray(project.items)