CSE2410 Fall 2014 Bounce

// Copyright 2007-2009 the V8 project authors. All rights reserved.

// Redistribution and use in source and binary forms, with or without

// modification, are permitted provided that the following conditions are

// met:

//

//     * Redistributions of source code must retain the above copyright

//       notice, this list of conditions and the following disclaimer.

//     * Redistributions in binary form must reproduce the above

//       copyright notice, this list of conditions and the following

//       disclaimer in the documentation and/or other materials provided

//       with the distribution.

//     * Neither the name of Google Inc. nor the names of its

//       contributors may be used to endorse or promote products derived

//       from this software without specific prior written permission.

//

// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS

// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT

// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR

// A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT

// OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,

// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT

// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,

// DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY

// THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT

// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE

// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.

#include "v8.h"

#include "api.h"

#include "runtime.h"

#include "cctest.h"

using ::v8::internal::Handle;

using ::v8::internal::JSFunction;

using ::v8::internal::Object;

using ::v8::internal::Script;

using ::v8::internal::SharedFunctionInfo;

using ::v8::internal::String;

namespace i = ::v8::internal;

static v8::Persistent<v8::Context> env;

static void InitializeVM() {

  if (env.IsEmpty()) {

    v8::HandleScope scope;

    env = v8::Context::New();

  }

  v8::HandleScope scope;

  env->Enter();

}

static void CheckFunctionName(v8::Handle<v8::Script> script,

                              const char* func_pos_src,

                              const char* ref_inferred_name) {

  // Get script source.

  Handle<JSFunction> fun = v8::Utils::OpenHandle(*script);

  Handle<Script> i_script(Script::cast(fun->shared()->script()));

  CHECK(i_script->source()->IsString());

  Handle<String> script_src(String::cast(i_script->source()));

  // Find the position of a given func source substring in the source.

  Handle<String> func_pos_str =

      i::Factory::NewStringFromAscii(i::CStrVector(func_pos_src));

  int func_pos = i::Runtime::StringMatch(script_src, func_pos_str, 0);

  CHECK_NE(0, func_pos);

  // Obtain SharedFunctionInfo for the function.

  Object* shared_func_info_ptr =

      i::Runtime::FindSharedFunctionInfoInScript(i_script, func_pos);

  CHECK(shared_func_info_ptr != i::Heap::undefined_value());

  Handle<SharedFunctionInfo> shared_func_info(

      SharedFunctionInfo::cast(shared_func_info_ptr));

  // Verify inferred function name.

  i::SmartPointer<char> inferred_name =

      shared_func_info->inferred_name()->ToCString();

  CHECK_EQ(ref_inferred_name, *inferred_name);

}

static v8::Handle<v8::Script> Compile(const char* src) {

  return v8::Script::Compile(v8::String::New(src));

}

TEST(GlobalProperty) {

  InitializeVM();

  v8::HandleScope scope;

  v8::Handle<v8::Script> script = Compile(

      "fun1 = function() { return 1; }\n"

      "fun2 = function() { return 2; }\n");

  CheckFunctionName(script, "return 1", "fun1");

  CheckFunctionName(script, "return 2", "fun2");

}

TEST(GlobalVar) {

  InitializeVM();

  v8::HandleScope scope;

  v8::Handle<v8::Script> script = Compile(

      "var fun1 = function() { return 1; }\n"

      "var fun2 = function() { return 2; }\n");

  CheckFunctionName(script, "return 1", "fun1");

  CheckFunctionName(script, "return 2", "fun2");

}

TEST(LocalVar) {

  InitializeVM();

  v8::HandleScope scope;

  v8::Handle<v8::Script> script = Compile(

      "function outer() {\n"

      "  var fun1 = function() { return 1; }\n"

      "  var fun2 = function() { return 2; }\n"

      "}");

  CheckFunctionName(script, "return 1", "fun1");

  CheckFunctionName(script, "return 2", "fun2");

}

TEST(InConstructor) {

  InitializeVM();

  v8::HandleScope scope;

  v8::Handle<v8::Script> script = Compile(

      "function MyClass() {\n"

      "  this.method1 = function() { return 1; }\n"

      "  this.method2 = function() { return 2; }\n"

      "}");

  CheckFunctionName(script, "return 1", "MyClass.method1");

  CheckFunctionName(script, "return 2", "MyClass.method2");

}

TEST(Factory) {

  InitializeVM();

  v8::HandleScope scope;

  v8::Handle<v8::Script> script = Compile(

      "function createMyObj() {\n"

      "  var obj = {};\n"

      "  obj.method1 = function() { return 1; }\n"

      "  obj.method2 = function() { return 2; }\n"

      "  return obj;\n"

      "}");

  CheckFunctionName(script, "return 1", "obj.method1");

  CheckFunctionName(script, "return 2", "obj.method2");

}

TEST(Static) {

  InitializeVM();

  v8::HandleScope scope;

  v8::Handle<v8::Script> script = Compile(

      "function MyClass() {}\n"

      "MyClass.static1 = function() { return 1; }\n"

      "MyClass.static2 = function() { return 2; }\n"

      "MyClass.MyInnerClass = {}\n"

      "MyClass.MyInnerClass.static3 = function() { return 3; }\n"

      "MyClass.MyInnerClass.static4 = function() { return 4; }");

  CheckFunctionName(script, "return 1", "MyClass.static1");

  CheckFunctionName(script, "return 2", "MyClass.static2");

  CheckFunctionName(script, "return 3", "MyClass.MyInnerClass.static3");

  CheckFunctionName(script, "return 4", "MyClass.MyInnerClass.static4");

}

TEST(Prototype) {

  InitializeVM();

  v8::HandleScope scope;

  v8::Handle<v8::Script> script = Compile(

      "function MyClass() {}\n"

      "MyClass.prototype.method1 = function() { return 1; }\n"

      "MyClass.prototype.method2 = function() { return 2; }\n"

      "MyClass.MyInnerClass = function() {}\n"

      "MyClass.MyInnerClass.prototype.method3 = function() { return 3; }\n"

      "MyClass.MyInnerClass.prototype.method4 = function() { return 4; }");

  CheckFunctionName(script, "return 1", "MyClass.method1");

  CheckFunctionName(script, "return 2", "MyClass.method2");

  CheckFunctionName(script, "return 3", "MyClass.MyInnerClass.method3");

  CheckFunctionName(script, "return 4", "MyClass.MyInnerClass.method4");

}

TEST(ObjectLiteral) {

  InitializeVM();

  v8::HandleScope scope;

  v8::Handle<v8::Script> script = Compile(

      "function MyClass() {}\n"

      "MyClass.prototype = {\n"

      "  method1: function() { return 1; },\n"

      "  method2: function() { return 2; } }");

  CheckFunctionName(script, "return 1", "MyClass.method1");

  CheckFunctionName(script, "return 2", "MyClass.method2");

}

TEST(AsParameter) {

  InitializeVM();

  v8::HandleScope scope;

  v8::Handle<v8::Script> script = Compile(

      "function f1(a) { return a(); }\n"

      "function f2(a, b) { return a() + b(); }\n"

      "var result1 = f1(function() { return 1; })\n"

      "var result2 = f2(function() { return 2; }, function() { return 3; })");

  // Can't infer names here.

  CheckFunctionName(script, "return 1", "");

  CheckFunctionName(script, "return 2", "");

  CheckFunctionName(script, "return 3", "");

}