feat(parser): integrate jsep directly

README.md

@@ -294,7 +294,7 @@ Nimma consists of 3 major components. These are:
 - codegen (iterator/feedback + baseline),
 - runtime (scope + sandbox + traverse).
 
-Parser takes a JSON Path expression and generates an AST that's consumed by the codegen in the next step.
+Parser takes a JSON Path expression and generates an AST that's consumed by the codegen in the next step. Nimma has its own JSON Path expression parser that's different from all remaining ones, thus some there might be instances where Nimma will parse a given expression differently than JSONPath-plus or jsonpath.
 
 Codegen is a two-step process:
 

package.json

@@ -31,10 +31,6 @@
       "import": "./src/parser/index.mjs",
       "require": "./cjs/parser/index.cjs"
     },
-    "./parser/jsep": {
-      "import": "./src/parser/jsep.mjs",
-      "require": "./cjs/parser/jsep.cjs"
-    },
     "./runtime": {
       "import": "./src/runtime/index.mjs",
       "require": "./cjs/runtime/index.cjs"
@@ -91,7 +87,6 @@
   "dependencies": {
     "@jsep-plugin/regex": "^1.0.3",
     "@jsep-plugin/ternary": "^1.1.3",
-    "astring": "^1.8.6",
-    "jsep": "^1.3.8"
+    "astring": "^1.8.6"
   }
 }

src/codegen/baseline/__tests__/parse-filter-expression.test.mjs → src/codegen/baseline/__tests__/generate-filter-script-expression.test.mjs

@@ -21,7 +21,7 @@ function print(expr) {
   return astring(branch[0].test);
 }
 
-describe('parseFilterExpression', () => {
+describe('generateFilterScriptExpression', () => {
   it('at member expression', () => {
     expect(print(`?(@.schema || @.ex)`)).to.eq(
       `!(scope.sandbox.value.schema || scope.sandbox.value.ex)`,
@@ -50,7 +50,14 @@ describe('parseFilterExpression', () => {
     );
   });
 
-  it('basic binary expressions', () => {
+  it('unary expressions', () => {
+    expect(print(`?([email protected])`)).to.eq(`!!scope.sandbox.value.amount`);
+    expect(print(`?([email protected] == [email protected])`)).to.eq(
+      '!(!scope.sandbox.value.line == -scope.sandbox.value.char)',
+    );
+  });
+
+  it('binary expressions', () => {
     expect(print(`?(@.amount + 2 === 4)`)).to.eq(
       `!(scope.sandbox.value.amount + 2 === 4)`,
     );

src/codegen/baseline/generators.mjs

@@ -1,4 +1,3 @@
-import jsep from '../../parser/jsep.mjs';
 import * as b from '../ast/builders.mjs';
 import { isNegativeSliceExpression } from '../guards.mjs';
 import internalScope from '../templates/internal-scope.mjs';
@@ -258,10 +257,9 @@ export function generateWildcardExpression(branch, iterator) {
 export function generateFilterScriptExpression(
   branch,
   iterator,
-  { value },
+  { value: esTree },
   tree,
 ) {
-  const esTree = jsep(value);
   assertDefinedIdentifier(esTree);
   const node = rewriteESTree(tree, esTree);
 

src/codegen/tree/tree.mjs

@@ -80,7 +80,7 @@ export default class ESTree {
         b.identifier(name),
         statefulFnParams,
         b.blockStatement([
-          b.returnStatement(jsep(this.#availableShorthands[name])),
+          b.returnStatement(jsep.parse(this.#availableShorthands[name])),
         ]),
       ),
     );