[interpreter] Add some bytecode tests for modules.

test/cctest/interpreter/generate-bytecode-expectations.cc

 // 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.
 
 #include <cstring>
 #include <fstream>
 #include <memory>
 #include <vector>
 
 #include "test/cctest/interpreter/bytecode-expectations-printer.h"
@@ skipping 22 matching lines @@
  public:
   static ProgramOptions FromCommandLine(int argc, char** argv);
 
   ProgramOptions()
       : parsing_failed_(false),
         print_help_(false),
         read_raw_js_snippet_(false),
         read_from_stdin_(false),
         rebaseline_(false),
         wrap_(true),
+        module_(false),
         top_level_(false),
         do_expressions_(false),
         verbose_(false) {}
 
   bool Validate() const;
   void UpdateFromHeader(std::istream& stream);   // NOLINT
   void PrintHeader(std::ostream& stream) const;  // NOLINT
 
   bool parsing_failed() const { return parsing_failed_; }
   bool print_help() const { return print_help_; }
   bool read_raw_js_snippet() const { return read_raw_js_snippet_; }
   bool read_from_stdin() const { return read_from_stdin_; }
   bool write_to_stdout() const {
     return output_filename_.empty() && !rebaseline_;
   }
   bool rebaseline() const { return rebaseline_; }
   bool wrap() const { return wrap_; }
+  bool module() const { return module_; }
   bool top_level() const { return top_level_; }
   bool do_expressions() const { return do_expressions_; }
   bool verbose() const { return verbose_; }
   bool suppress_runtime_errors() const { return rebaseline_ && !verbose_; }
   std::vector<std::string> input_filenames() const { return input_filenames_; }
   std::string output_filename() const { return output_filename_; }
   std::string test_function_name() const { return test_function_name_; }
 
  private:
   bool parsing_failed_;
   bool print_help_;
   bool read_raw_js_snippet_;
   bool read_from_stdin_;
   bool rebaseline_;
   bool wrap_;
+  bool module_;
   bool top_level_;
   bool do_expressions_;
   bool verbose_;
   std::vector<std::string> input_filenames_;
   std::string output_filename_;
   std::string test_function_name_;
 };
 
 class V8InitializationScope final {
  public:
@@ skipping 65 matching lines @@
     if (strcmp(argv[i], "--help") == 0) {
       options.print_help_ = true;
     } else if (strcmp(argv[i], "--raw-js") == 0) {
       options.read_raw_js_snippet_ = true;
     } else if (strcmp(argv[i], "--stdin") == 0) {
       options.read_from_stdin_ = true;
     } else if (strcmp(argv[i], "--rebaseline") == 0) {
       options.rebaseline_ = true;
     } else if (strcmp(argv[i], "--no-wrap") == 0) {
       options.wrap_ = false;
+    } else if (strcmp(argv[i], "--module") == 0) {
+      options.module_ = true;
     } else if (strcmp(argv[i], "--top-level") == 0) {
       options.top_level_ = true;
     } else if (strcmp(argv[i], "--do-expressions") == 0) {
       options.do_expressions_ = true;
     } else if (strcmp(argv[i], "--verbose") == 0) {
       options.verbose_ = true;
     } else if (strncmp(argv[i], "--output=", 9) == 0) {
       options.output_filename_ = argv[i] + 9;
     } else if (strncmp(argv[i], "--test-function-name=", 21) == 0) {
       options.test_function_name_ = argv[i] + 21;
@@ skipping 58 matching lines @@
         "Multiple input files, but no --rebaseline or --raw-js specified.");
     return false;
   }
 
   if (top_level_ && !test_function_name_.empty()) {
     REPORT_ERROR(
         "Test function name specified while processing top level code.");
     return false;
   }
 
+  if (module_ && (!top_level_ || wrap_)) {
+    REPORT_ERROR(
+        "The flag --module currently requires --top-level and --no-wrap.");
+    return false;
+  }
+
   return true;
 }
 
 void ProgramOptions::UpdateFromHeader(std::istream& stream) {
   std::string line;
 
   // Skip to the beginning of the options header
   while (std::getline(stream, line)) {
     if (line == "---") break;
   }
 
   while (std::getline(stream, line)) {
-    if (line.compare(0, 6, "wrap: ") == 0) {
+    if (line.compare(0, 8, "module: ") == 0) {
+      module_ = ParseBoolean(line.c_str() + 8);
+    } else if (line.compare(0, 6, "wrap: ") == 0) {
       wrap_ = ParseBoolean(line.c_str() + 6);
     } else if (line.compare(0, 20, "test function name: ") == 0) {
       test_function_name_ = line.c_str() + 20;
     } else if (line.compare(0, 11, "top level: ") == 0) {
       top_level_ = ParseBoolean(line.c_str() + 11);
     } else if (line.compare(0, 16, "do expressions: ") == 0) {
       do_expressions_ = ParseBoolean(line.c_str() + 16);
     } else if (line == "---") {
       break;
     } else if (line.empty()) {
       continue;
     } else {
       UNREACHABLE();
       return;
     }
   }
 }
 
 void ProgramOptions::PrintHeader(std::ostream& stream) const {  // NOLINT
   stream << "---"
          << "\nwrap: " << BooleanToString(wrap_);
 
   if (!test_function_name_.empty()) {
     stream << "\ntest function name: " << test_function_name_;
   }
 
+  if (module_) stream << "\nmodule: yes";
   if (top_level_) stream << "\ntop level: yes";
   if (do_expressions_) stream << "\ndo expressions: yes";
 
   stream << "\n\n";
 }
 
 V8InitializationScope::V8InitializationScope(const char* exec_path)
     : platform_(v8::platform::CreateDefaultPlatform()) {
   i::FLAG_ignition = true;
   i::FLAG_always_opt = false;
@@ skipping 79 matching lines @@
                               const std::vector<std::string>& snippet_list,
                               const V8InitializationScope& platform,
                               const ProgramOptions& options) {
   v8::Isolate::Scope isolate_scope(platform.isolate());
   v8::HandleScope handle_scope(platform.isolate());
   v8::Local<v8::Context> context = v8::Context::New(platform.isolate());
   v8::Context::Scope context_scope(context);
 
   BytecodeExpectationsPrinter printer(platform.isolate());
   printer.set_wrap(options.wrap());
+  printer.set_module(options.module());
   printer.set_top_level(options.top_level());
   if (!options.test_function_name().empty()) {
     printer.set_test_function_name(options.test_function_name());
   }
 
   if (options.do_expressions()) i::FLAG_harmony_do_expressions = true;
 
   stream << "#\n# Autogenerated by generate-bytecode-expectations.\n#\n\n";
   options.PrintHeader(stream);
   for (const std::string& snippet : snippet_list) {
@@ skipping 33 matching lines @@
   std::cerr
       << "\nUsage: " << exec_path
       << " [OPTIONS]... [INPUT FILES]...\n\n"
          "Options:\n"
          "  --help    Print this help message.\n"
          "  --verbose Emit messages about the progress of the tool.\n"
          "  --raw-js  Read raw JavaScript, instead of the output format.\n"
          "  --stdin   Read from standard input instead of file.\n"
          "  --rebaseline  Rebaseline input snippet file.\n"
          "  --no-wrap     Do not wrap the snippet in a function.\n"
+         "  --module      Compile as JavaScript module.\n"
          "  --test-function-name=foo  "
          "Specify the name of the test function.\n"
          "  --top-level   Process top level code, not the top-level function.\n"
          "  --do-expressions  Enable harmony_do_expressions flag.\n"
          "  --output=file.name\n"
          "      Specify the output file. If not specified, output goes to "
          "stdout.\n"
          "  --pool-type=(number|string|mixed)\n"
          "      Specify the type of the entries in the constant pool "
          "(default: mixed).\n"
@@ skipping 59 matching lines @@
     }
   }
 
   if (!options.rebaseline()) {
     if (!WriteExpectationsFile(snippet_list, platform, options,
                                options.output_filename())) {
       return 3;
     }
   }
 }