feat: add several features and tests

.vscode/launch.json

@@ -13,8 +13,30 @@
       "type": "node"
     },
     {
-      "name": "Test Extractor",
-      "program": "${workspaceFolder}/test/test_extractor.ts",
+      "name": "Test Scenario",
+      "program": "${workspaceFolder}/test/test_scenario.ts",
+      "request": "launch",
+      "runtimeArgs": ["--nolazy", "-r", "ts-node/register/transpile-only"],
+      "skipFiles": ["<node_internals>/**"],
+      "args": ["--scenario=${input:scenario}", "--index=${input:index}"],
+      "type": "node"
+    },
+    {
+      "runtimeExecutable": "/usr/local/bin/node",
+      "type": "node",
+      "request": "launch",
+      "name": "Jest Scenarios",
+      "program": "${workspaceFolder}/node_modules/.bin/jest",
+      "args": ["test/e2e.test.ts", "--config", "jest.config.ts", "--scenarios=${input:scenarios}"],
+      "console": "integratedTerminal",
+      "internalConsoleOptions": "neverOpen",
+      "windows": {
+        "program": "${workspaceFolder}/node_modules/jest/bin/jest"
+      }
+    },
+    {
+      "name": "Test Engine",
+      "program": "${workspaceFolder}/test/test_engine.ts",
       "request": "launch",
       "runtimeArgs": ["--nolazy", "-r", "ts-node/register/transpile-only"],
       "skipFiles": ["<node_internals>/**"],
@@ -33,5 +55,25 @@
         "program": "${workspaceFolder}/node_modules/jest/bin/jest"
       }
     }
+  ],
+  "inputs": [
+    {
+      "id": "scenarios",
+      "type": "promptString",
+      "description": "Enter Scenarios",
+      "default": "all"
+    },
+    {
+      "id": "scenario",
+      "type": "promptString",
+      "description": "Enter Scenario",
+      "default": "assignments"
+    },
+    {
+      "id": "index",
+      "type": "promptString",
+      "description": "Enter test index",
+      "default": "0"
+    }
   ]
 }

package.json

@@ -50,7 +50,9 @@
     "lint:fix": "eslint . --fix",
     "lint:check": "eslint . || exit 1",
     "format": "prettier --write '**/*.ts' '**/*.js' '**/*.json'",
-    "prepare": "husky install"
+    "prepare": "husky install",
+    "jest:scenarios": "jest e2e.test.ts --verbose",
+    "test:scenario": "ts-node test/test_scenario.ts"
   },
   "engines": {
     "node": ">=14.15.0 <15",

src/constants.ts

@@ -1,3 +1,5 @@
 export const VARS_PREFIX = '___';
 export const DATA_PARAM_KEY = '___d';
 export const BINDINGS_PARAM_KEY = '___b';
+export const RESULT_KEY = '___r';
+export const FUNCTION_RESULT_KEY = '___f';

src/engine.ts

@@ -2,20 +2,23 @@ import { BINDINGS_PARAM_KEY, DATA_PARAM_KEY } from './constants';
 import { JsonTemplateLexer } from './lexer';
 import { JsonTemplateParser } from './parser';
 import { JsonTemplateTranslator } from './translator';
+import { CommonUtils } from './utils';
 
 export class JsonTemplateEngine {
   private readonly fn: Function;
   constructor(template: string) {
     this.fn = JsonTemplateEngine.compile(template);
   }
-  private static compile(template: string) {
+
+  private static compile(template: string): Function {
     const lexer = new JsonTemplateLexer(template);
     const parser = new JsonTemplateParser(lexer);
     const translator = new JsonTemplateTranslator(parser.parse());
-    return new Function(DATA_PARAM_KEY, BINDINGS_PARAM_KEY, translator.translate());
+    const code = translator.translate();
+    return CommonUtils.CreateAsyncFunction(DATA_PARAM_KEY, BINDINGS_PARAM_KEY, code);
   }
 
-  evaluate(data: any, bindings: any = {}) {
-    return this.fn(data, bindings);
+  evaluate(data: any, bindings: any = {}): Promise<any> {
+    return this.fn(data || {}, bindings);
   }
 }

src/errors.ts

@@ -1,8 +1,6 @@
 export class JsonTemplateLexerError extends Error {
-  readonly column: number;
-  constructor(message: string, column: number) {
+  constructor(message: string) {
     super(message);
-    this.column = column;
   }
 }
 
@@ -11,3 +9,9 @@ export class JsosTemplateParserError extends Error {
     super(message);
   }
 }
+
+export class JsosTemplateTranslatorError extends Error {
+  constructor(message: string) {
+    super(message);
+  }
+}