[wasm] Remove the "Wasm" object.

test/mjsunit/wasm/test-wasm-module-builder.js

 // Copyright 2016 the V8 project authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 // Flags: --expose-wasm
 
 load('test/mjsunit/wasm/wasm-constants.js');
 load('test/mjsunit/wasm/wasm-module-builder.js');
 
 var debug = true;
 
+function instantiate(buffer, ffi) {
+  return new WebAssembly.Instance(WebAssembly.Module(buffer), ffi);
+}
+
 (function BasicTest() {
-    var module = new WasmModuleBuilder();
-    module.addMemory(1, 2, false);
-    module.addFunction("foo", kSig_i_v)
+    let builder = new WasmModuleBuilder();
+    builder.addMemory(1, 2, false);
+    builder.addFunction("foo", kSig_i_v)
         .addBody([kExprI8Const, 11])
         .exportAs("blarg");
 
-    var buffer = module.toBuffer(debug);
-    var instance = Wasm.instantiateModule(buffer);
+    var buffer = builder.toBuffer(debug);
+    var instance = instantiate(buffer);
     assertEquals(11, instance.exports.blarg());
 })();
 
 (function ImportTest() {
-    var module = new WasmModuleBuilder();
-    var index = module.addImport("print", makeSig_v_x(kAstI32));
-    module.addFunction("foo", kSig_v_v)
+    let builder = new WasmModuleBuilder();
+    var index = builder.addImport("print", makeSig_v_x(kAstI32));
+    builder.addFunction("foo", kSig_v_v)
         .addBody([kExprI8Const, 13, kExprCallFunction, index])
         .exportAs("main");
 
-    var buffer = module.toBuffer(debug);
-    var instance = Wasm.instantiateModule(buffer, {print: print});
+    var buffer = builder.toBuffer(debug);
+    var instance = instantiate(buffer, {print: print});
     print("should print 13! ");
     instance.exports.main();
 })();
 
 (function LocalsTest() {
-    var module = new WasmModuleBuilder();
-    module.addFunction(undefined, kSig_i_i)
+    let builder = new WasmModuleBuilder();
+    builder.addFunction(undefined, kSig_i_i)
         .addLocals({i32_count: 1})
         .addBody([kExprGetLocal, 0, kExprSetLocal, 1, kExprGetLocal, 1])
         .exportAs("main");
 
-    var buffer = module.toBuffer(debug);
-    var instance = Wasm.instantiateModule(buffer);
+    var buffer = builder.toBuffer(debug);
+    var instance = instantiate(buffer);
     assertEquals(19, instance.exports.main(19));
     assertEquals(27777, instance.exports.main(27777));
 })();
 
 (function LocalsTest2() {
     // TODO(titzer): i64 only works on 64-bit platforms.
     var types = [
       {locals: {i32_count: 1}, type: kAstI32},
 //      {locals: {i64_count: 1}, type: kAstI64},
       {locals: {f32_count: 1}, type: kAstF32},
       {locals: {f64_count: 1}, type: kAstF64},
     ];
 
     for (p of types) {
-      var module = new WasmModuleBuilder();
-      module.addFunction(undefined, makeSig_r_x(p.type, p.type))
+      let builder = new WasmModuleBuilder();
+      builder.addFunction(undefined, makeSig_r_x(p.type, p.type))
         .addLocals(p.locals)
         .addBody([kExprGetLocal, 0, kExprSetLocal, 1, kExprGetLocal, 1])
         .exportAs("main");
 
-      var buffer = module.toBuffer(debug);
-      var instance = Wasm.instantiateModule(buffer);
+      var buffer = builder.toBuffer(debug);
+      var instance = instantiate(buffer);
       assertEquals(19, instance.exports.main(19));
       assertEquals(27777, instance.exports.main(27777));
     }
 })();
 
 (function CallTest() {
-    var module = new WasmModuleBuilder();
-    module.addFunction("add", kSig_i_ii)
+    let builder = new WasmModuleBuilder();
+    builder.addFunction("add", kSig_i_ii)
         .addBody([kExprGetLocal, 0, kExprGetLocal, 1, kExprI32Add]);
-    module.addFunction("main", kSig_i_ii)
+    builder.addFunction("main", kSig_i_ii)
         .addBody([kExprGetLocal, 0, kExprGetLocal, 1, kExprCallFunction, 0])
         .exportAs("main");
 
-    var instance = module.instantiate();
+    var instance = builder.instantiate();
     assertEquals(44, instance.exports.main(11, 33));
     assertEquals(7777, instance.exports.main(2222, 5555));
 })();
 
 (function IndirectCallTest() {
-    var module = new WasmModuleBuilder();
-    module.addFunction("add", kSig_i_ii)
+    let builder = new WasmModuleBuilder();
+    builder.addFunction("add", kSig_i_ii)
         .addBody([kExprGetLocal, 0, kExprGetLocal, 1, kExprI32Add]);
-    module.addFunction("main", kSig_i_iii)
+    builder.addFunction("main", kSig_i_iii)
         .addBody([kExprGetLocal,
                   1, kExprGetLocal, 2, kExprGetLocal, 0, kExprCallIndirect, 0, kTableZero])
         .exportAs("main");
-    module.appendToTable([0]);
+    builder.appendToTable([0]);
 
-    var instance = module.instantiate();
+    var instance = builder.instantiate();
     assertEquals(44, instance.exports.main(0, 11, 33));
     assertEquals(7777, instance.exports.main(0, 2222, 5555));
     assertThrows(function() { instance.exports.main(1, 1, 1); });
 })();
 
 (function DataSegmentTest() {
-    var module = new WasmModuleBuilder();
-    module.addMemory(1, 1, false);
-    module.addFunction("load", kSig_i_i)
+    let builder = new WasmModuleBuilder();
+    builder.addMemory(1, 1, false);
+    builder.addFunction("load", kSig_i_i)
         .addBody([kExprGetLocal, 0, kExprI32LoadMem, 0, 0])
         .exportAs("load");
-    module.addDataSegment(0, [9, 9, 9, 9]);
+    builder.addDataSegment(0, [9, 9, 9, 9]);
 
-    var buffer = module.toBuffer(debug);
-    var instance = Wasm.instantiateModule(buffer);
+    var buffer = builder.toBuffer(debug);
+    var instance = instantiate(buffer);
     assertEquals(151587081, instance.exports.load(0));
 })();
 
 
 (function BasicTestWithUint8Array() {
-    var module = new WasmModuleBuilder();
-    module.addMemory(1, 2, false);
-    module.addFunction("foo", kSig_i_v)
+    let builder = new WasmModuleBuilder();
+    builder.addMemory(1, 2, false);
+    builder.addFunction("foo", kSig_i_v)
         .addBody([kExprI8Const, 17])
         .exportAs("blarg");
 
-    var buffer = module.toBuffer(debug);
+    var buffer = builder.toBuffer(debug);
     var array = new Uint8Array(buffer);
-    var instance = Wasm.instantiateModule(array);
+    var instance = instantiate(array);
     assertEquals(17, instance.exports.blarg());
 
     var kPad = 5;
     var buffer2 = new ArrayBuffer(kPad + buffer.byteLength + kPad);
     var whole = new Uint8Array(buffer2);
     for (var i = 0; i < whole.byteLength; i++) {
       whole[i] = 0xff;
     }
     var array2 = new Uint8Array(buffer2, kPad, buffer.byteLength);
     for (var i = 0; i < array2.byteLength; i++) {
       array2[i] = array[i];
     }
-    var instance = Wasm.instantiateModule(array2);
+    var instance = instantiate(array2);
     assertEquals(17, instance.exports.blarg());
 })();
 
 (function ImportTestTwoLevel() {
-    var module = new WasmModuleBuilder();
-    var index = module.addImportWithModule("mod", "print", makeSig_v_x(kAstI32));
-    module.addFunction("foo", kSig_v_v)
+    let builder = new WasmModuleBuilder();
+    var index = builder.addImportWithModule("mod", "print", makeSig_v_x(kAstI32));
+    builder.addFunction("foo", kSig_v_v)
         .addBody([kExprI8Const, 19, kExprCallFunction, index])
         .exportAs("main");
 
-    var buffer = module.toBuffer(debug);
-    var instance = Wasm.instantiateModule(buffer, {mod: {print: print}});
+    var buffer = builder.toBuffer(debug);
+    var instance = instantiate(buffer, {mod: {print: print}});
     print("should print 19! ");
     instance.exports.main();
 })();