Add V8IntrinsicIdentifier printing

packages/babel-generator/src/generators/expressions.js

@@ -264,3 +264,8 @@ export function PrivateName(node: Object) {
   this.token("#");
   this.print(node.id, node);
 }
+
+export function V8IntrinsicIdentifier(node: Object) {
+  this.token("%");
+  this.word(node.name);
+}

packages/babel-generator/test/fixtures/misc/V8IntrinsicIdentifier/input.js

@@ -0,0 +1 @@
+%DebugPrint(foo);

packages/babel-generator/test/fixtures/misc/V8IntrinsicIdentifier/options.json

@@ -0,0 +1,3 @@
+{
+  "plugins": ["v8intrinsic"]
+}

packages/babel-generator/test/fixtures/misc/V8IntrinsicIdentifier/output.js

@@ -0,0 +1 @@
+%DebugPrint(foo);

packages/babel-types/scripts/utils/formatBuilderName.js

@@ -5,5 +5,6 @@ const toLowerCase = Function.call.bind("".toLowerCase);
 module.exports = function formatBuilderName(type) {
   // FunctionExpression -> functionExpression
   // JSXIdentifier -> jsxIdentifier
-  return type.replace(/^([A-Z](?=[a-z])|[A-Z]+(?=[A-Z]))/, toLowerCase);
+  // V8IntrinsicIdentifier -> v8IntrinsicIdentifier
+  return type.replace(/^([A-Z](?=[a-z0-9])|[A-Z]+(?=[A-Z]))/, toLowerCase);
 };

packages/babel-types/src/asserts/generated/index.js

@@ -663,6 +663,12 @@ export function assertNoop(node: Object, opts?: Object = {}): void {
 export function assertPlaceholder(node: Object, opts?: Object = {}): void {
   assert("Placeholder", node, opts);
 }
+export function assertV8IntrinsicIdentifier(
+  node: Object,
+  opts?: Object = {},
+): void {
+  assert("V8IntrinsicIdentifier", node, opts);
+}
 export function assertArgumentPlaceholder(
   node: Object,
   opts?: Object = {},

packages/babel-types/src/builders/generated/index.js

@@ -600,6 +600,10 @@ export function Placeholder(...args: Array<any>): Object {
   return builder("Placeholder", ...args);
 }
 export { Placeholder as placeholder };
+export function V8IntrinsicIdentifier(...args: Array<any>): Object {
+  return builder("V8IntrinsicIdentifier", ...args);
+}
+export { V8IntrinsicIdentifier as v8IntrinsicIdentifier };
 export function ArgumentPlaceholder(...args: Array<any>): Object {
   return builder("ArgumentPlaceholder", ...args);
 }

packages/babel-types/src/definitions/misc.js

@@ -1,5 +1,9 @@
 // @flow
-import defineType, { assertNodeType, assertOneOf } from "./utils";
+import defineType, {
+  assertNodeType,
+  assertOneOf,
+  assertValueType,
+} from "./utils";
 import { PLACEHOLDERS } from "./placeholders";
 
 defineType("Noop", {
@@ -19,3 +23,10 @@ defineType("Placeholder", {
     },
   },
 });
+
+defineType("V8IntrinsicIdentifier", {
+  builder: ["name"],
+  fields: {
+    name: assertValueType("string"),
+  },
+});

packages/babel-types/src/validators/generated/index.js

@@ -2107,6 +2107,20 @@ export function isPlaceholder(node: ?Object, opts?: Object): boolean {
 
   return false;
 }
+export function isV8IntrinsicIdentifier(node: ?Object, opts?: Object): boolean {
+  if (!node) return false;
+
+  const nodeType = node.type;
+  if (nodeType === "V8IntrinsicIdentifier") {
+    if (typeof opts === "undefined") {
+      return true;
+    } else {
+      return shallowEqual(node, opts);
+    }
+  }
+
+  return false;
+}
 export function isArgumentPlaceholder(node: ?Object, opts?: Object): boolean {
   if (!node) return false;