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      1 // Copyright 2015 the V8 project authors. All rights reserved.
      2 // Use of this source code is governed by a BSD-style license that can be
      3 // found in the LICENSE file.
      4 
      5 #include "test/cctest/interpreter/interpreter-tester.h"
      6 
      7 namespace v8 {
      8 namespace internal {
      9 namespace interpreter {
     10 
     11 MaybeHandle<Object> CallInterpreter(Isolate* isolate,
     12                                     Handle<JSFunction> function) {
     13   return Execution::Call(isolate, function,
     14                          isolate->factory()->undefined_value(), 0, nullptr);
     15 }
     16 
     17 InterpreterTester::InterpreterTester(
     18     Isolate* isolate, const char* source, MaybeHandle<BytecodeArray> bytecode,
     19     MaybeHandle<TypeFeedbackVector> feedback_vector, const char* filter)
     20     : isolate_(isolate),
     21       source_(source),
     22       bytecode_(bytecode),
     23       feedback_vector_(feedback_vector) {
     24   i::FLAG_ignition = true;
     25   i::FLAG_always_opt = false;
     26   // Ensure handler table is generated.
     27   isolate->interpreter()->Initialize();
     28 }
     29 
     30 InterpreterTester::InterpreterTester(
     31     Isolate* isolate, Handle<BytecodeArray> bytecode,
     32     MaybeHandle<TypeFeedbackVector> feedback_vector, const char* filter)
     33     : InterpreterTester(isolate, nullptr, bytecode, feedback_vector, filter) {}
     34 
     35 InterpreterTester::InterpreterTester(Isolate* isolate, const char* source,
     36                                      const char* filter)
     37     : InterpreterTester(isolate, source, MaybeHandle<BytecodeArray>(),
     38                         MaybeHandle<TypeFeedbackVector>(), filter) {}
     39 
     40 InterpreterTester::~InterpreterTester() {}
     41 
     42 Local<Message> InterpreterTester::CheckThrowsReturnMessage() {
     43   TryCatch try_catch(reinterpret_cast<v8::Isolate*>(isolate_));
     44   auto callable = GetCallable<>();
     45   MaybeHandle<Object> no_result = callable();
     46   CHECK(isolate_->has_pending_exception());
     47   CHECK(try_catch.HasCaught());
     48   CHECK(no_result.is_null());
     49   isolate_->OptionalRescheduleException(true);
     50   CHECK(!try_catch.Message().IsEmpty());
     51   return try_catch.Message();
     52 }
     53 
     54 Handle<Object> InterpreterTester::NewObject(const char* script) {
     55   return v8::Utils::OpenHandle(*CompileRun(script));
     56 }
     57 
     58 Handle<String> InterpreterTester::GetName(Isolate* isolate, const char* name) {
     59   Handle<String> result = isolate->factory()->NewStringFromAsciiChecked(name);
     60   return isolate->factory()->string_table()->LookupString(isolate, result);
     61 }
     62 
     63 std::string InterpreterTester::SourceForBody(const char* body) {
     64   return "function " + function_name() + "() {\n" + std::string(body) + "\n}";
     65 }
     66 
     67 std::string InterpreterTester::function_name() {
     68   return std::string(kFunctionName);
     69 }
     70 
     71 }  // namespace interpreter
     72 }  // namespace internal
     73 }  // namespace v8
     74