Merge pull request #1518 from babel/es7.functionBind

Add experimental support for ES7 function bind.

test/core/fixtures/generation/types/BindExpression/actual.js

@@ -0,0 +1,5 @@
+::foo.bar.foo;
+::foo.bar["foo"];
+
+ctx::foo.bar.foo;
+ctx::foo.bar["foo"];

test/core/fixtures/generation/types/BindExpression/expected.js

@@ -0,0 +1,5 @@
+::foo.bar.foo;
+::foo.bar["foo"];
+
+ctx::foo.bar.foo;
+ctx::foo.bar["foo"];

test/core/fixtures/transformation/es7.function-bind/bind/actual.js

@@ -0,0 +1,3 @@
+var f = ctx::ns.obj.func;
+var g = ::ns.obj.func;
+var h = new X::y;

test/core/fixtures/transformation/es7.function-bind/bind/expected.js

@@ -0,0 +1,7 @@
+"use strict";
+
+var _context;
+
+var f = (_context = ctx, ns.obj.func).bind(_context);
+var g = (_context = ns.obj).func.bind(_context);
+var h = (_context = new X(), y).bind(_context);

test/core/fixtures/transformation/es7.function-bind/call/actual.js

@@ -0,0 +1,4 @@
+ctx::ns.obj.func();
+::ns.obj.func();
+
+ns.obj2::ns.obj1.func();

test/core/fixtures/transformation/es7.function-bind/call/expected.js

@@ -0,0 +1,8 @@
+"use strict";
+
+var _context;
+
+(_context = ctx, ns.obj.func).call(_context);
+(_context = ns.obj).func.call(_context);
+
+(_context = ns.obj2, ns.obj1.func).call(_context);

test/core/fixtures/transformation/es7.function-bind/complex-call/actual.js

@@ -0,0 +1,6 @@
+import { map, takeWhile, forEach } from "iterlib";
+
+getPlayers()
+::map(x => x.character())
+::takeWhile(x => x.strength > 100)
+::forEach(x => console.log(x));

test/core/fixtures/transformation/es7.function-bind/complex-call/exec.js

@@ -0,0 +1,27 @@
+var operations = [];
+
+var lib = {};
+
+for (let key of ['f', 'g', 'h']) {
+  let func = () => operations.push(`lib.${key}()`);
+  Object.defineProperty(lib, key, {
+    get() {
+      operations.push(`get lib.${key}`);
+      return func;
+    }
+  });
+}
+
+({prop:'value'})
+::lib.f()
+::lib.g()
+::lib.h();
+
+assert.deepEqual(operations, [
+  'get lib.f',
+  'lib.f()',
+  'get lib.g',
+  'lib.g()',
+  'get lib.h',
+  'lib.h()'
+]);

test/core/fixtures/transformation/es7.function-bind/complex-call/expected.js

@@ -0,0 +1,13 @@
+"use strict";
+
+var _context;
+
+var _iterlib = require("iterlib");
+
+(_context = (_context = (_context = getPlayers(), _iterlib.map).call(_context, function (x) {
+  return x.character();
+}), _iterlib.takeWhile).call(_context, function (x) {
+  return x.strength > 100;
+}), _iterlib.forEach).call(_context, function (x) {
+  return console.log(x);
+});

test/core/fixtures/transformation/es7.function-bind/options.json

@@ -0,0 +1,3 @@
+{
+  "optional": "es7.functionBind"
+}