feat: arrays support

demo/demo.ts

@@ -1,4 +1,4 @@
-// ? run "pnpm tsx demo.ts" in the terminal to see the output
+// ? run "pnpm tsx demo" in the terminal to see the output
 
 import { evaluate, parse } from 'cel-js'
 

demo/package.json

@@ -4,7 +4,7 @@
   "description": "A simple usage of the CEL library",
   "type": "module",
   "dependencies": {
-    "cel-js": "0.1.2"
+    "cel-js": "0.1.3"
   },
   "devDependencies": {
     "tsx": "4.7.0"

src/parser.ts

@@ -19,6 +19,7 @@ import {
   Dot,
   CloseBracket,
   OpenBracket,
+  Comma,
 } from './tokens.js'
 
 export class CelParser extends CstParser {
@@ -91,7 +92,7 @@ export class CelParser extends CstParser {
         { ALT: () => this.SUBRULE(this.identifierDotExpression) },
         { ALT: () => this.SUBRULE(this.identifierIndexExpression) },
       ])
-    })  
+    })
   })
 
   private identifierDotExpression = this.RULE('identifierDotExpression', () => {
@@ -108,6 +109,18 @@ export class CelParser extends CstParser {
     }
   )
 
+  private arrayExpression = this.RULE('arrayExpression', () => {
+    this.CONSUME(OpenBracket)
+    this.OPTION(() => {
+      this.SUBRULE(this.expr)
+      this.MANY(() => {
+        this.CONSUME(Comma)
+        this.SUBRULE2(this.expr)
+      })
+    })
+    this.CONSUME(CloseBracket)
+  })
+
   private atomicExpression = this.RULE('atomicExpression', () => {
     this.OR([
       { ALT: () => this.SUBRULE(this.parenthesisExpression) },

src/tokens.ts

@@ -21,6 +21,7 @@ export const OpenBracket = createToken({ name: 'OpenBracket', pattern: /\[/ })
 export const CloseBracket = createToken({ name: 'CloseBracket', pattern: /\]/ })
 
 export const Dot = createToken({ name: 'Dot', pattern: /\./ })
+export const Comma = createToken({ name: 'Comma', pattern: /,/ })
 
 export const Float = createToken({
   name: 'Float',
@@ -196,6 +197,7 @@ export const allTokens = [
   OpenBracket,
   CloseBracket,
   Dot,
+  Comma,
 
   Float,
   Integer,