8.4 Allow new without parenthesis (#1146)

Author: genintho

src/parser/expr.js

@@ -97,6 +97,15 @@ module.exports = {
     if (this.token === this.tok.T_SPACESHIP) {
       return result("bin", "<=>", expr, this.next().read_expr());
     }
+    if (this.token === this.tok.T_OBJECT_OPERATOR) {
+      if (this.version < 804) {
+        this.raiseError(
+          "New without parenthesis is not allowed before PHP 8.4",
+        );
+      }
+      return result("bin", "->", expr, this.next().read_expr());
+    }
+
     if (this.token === this.tok.T_INSTANCEOF) {
       expr = result(
         "bin",

test/snapshot/__snapshots__/class.test.js.snap

@@ -1,5 +1,39 @@
 // Jest Snapshot v1, https://goo.gl/fbAQLP
 
+exports[`Test classes 8.4 allow new without parenthesis 1`] = `
+Program {
+  "children": [
+    ExpressionStatement {
+      "expression": Bin {
+        "kind": "bin",
+        "left": New {
+          "arguments": [],
+          "kind": "new",
+          "what": Name {
+            "kind": "name",
+            "name": "People",
+            "resolution": "uqn",
+          },
+        },
+        "right": Call {
+          "arguments": [],
+          "kind": "call",
+          "what": Name {
+            "kind": "name",
+            "name": "name",
+            "resolution": "uqn",
+          },
+        },
+        "type": "->",
+      },
+      "kind": "expressionstatement",
+    },
+  ],
+  "errors": [],
+  "kind": "program",
+}
+`;
+
 exports[`Test classes Advanced tests 1`] = `
 Program {
   "children": [
@@ -1958,6 +1992,8 @@ Program {
 }
 `;
 
+exports[`Test classes new without parenthesis throw errors in PHP < 8.4 1`] = `"New without parenthesis is not allowed before PHP 8.4 on line 1"`;
+
 exports[`Test classes readonly class in PHP8.2 should support abstract readonly 1`] = `
 Program {
   "children": [

test/snapshot/class.test.js

@@ -256,6 +256,23 @@ describe("Test classes", function () {
     ).toMatchSnapshot();
   });
 
+  it("8.4 allow new without parenthesis", () => {
+    const code = `new People()->name();`;
+    const test_parser = parser.create({
+      parser: {
+        version: "8.4",
+      },
+    });
+    expect(test_parser.parseEval(code)).toMatchSnapshot();
+  });
+
+  it("new without parenthesis throw errors in PHP < 8.4", () => {
+    const code = `new People()->name();`;
+    expect(() => {
+      parser.parseEval(code);
+    }).toThrowErrorMatchingSnapshot();
+  });
+
   it("knows where a function definiton starts", function () {
     const phpCode = `
 class b {