From 2ce24a9452f31ba2489e7646eddc855fb1ef7cbf Mon Sep 17 00:00:00 2001
From: Refael Ackermann <refack@gmail.com>
Date: Thu, 30 May 2019 11:54:09 -0400
Subject: [PATCH] tools: fix js2c regression
MIME-Version: 1.0
Content-Type: text/plain; charset=UTF-8
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PR-URL: https://github.com/nodejs/node/pull/27980
Reviewed-By: Michaël Zasso <targos@protonmail.com>
Reviewed-By: Ben Noordhuis <info@bnoordhuis.nl>
Reviewed-By: Joyee Cheung <joyeec9h3@gmail.com>
---
 node.gyp                        |  1 +
 src/node_native_module.h        |  5 +++++
 test/cctest/test_per_process.cc | 34 +++++++++++++++++++++++++++++++++
 tools/js2c.py                   | 22 ++++++++++++++++++---
 4 files changed, 59 insertions(+), 3 deletions(-)
 create mode 100644 test/cctest/test_per_process.cc

diff --git a/node.gyp b/node.gyp
index aebef9c11fbc40..198a7ec166aa07 100644
--- a/node.gyp
+++ b/node.gyp
@@ -1090,6 +1090,7 @@
         'test/cctest/test_node_postmortem_metadata.cc',
         'test/cctest/test_environment.cc',
         'test/cctest/test_linked_binding.cc',
+        'test/cctest/test_per_process.cc',
         'test/cctest/test_platform.cc',
         'test/cctest/test_report_util.cc',
         'test/cctest/test_traced_value.cc',
diff --git a/src/node_native_module.h b/src/node_native_module.h
index 5450c63c161cf2..fabaea75686161 100644
--- a/src/node_native_module.h
+++ b/src/node_native_module.h
@@ -11,6 +11,9 @@
 #include "node_union_bytes.h"
 #include "v8.h"
 
+// Forward declare test fixture for `friend` declaration.
+class PerProcessTest;
+
 namespace node {
 namespace native_module {
 
@@ -82,6 +85,8 @@ class NativeModuleLoader {
 
   // Used to synchronize access to the code cache map
   Mutex code_cache_mutex_;
+
+  friend class ::PerProcessTest;
 };
 }  // namespace native_module
 
diff --git a/test/cctest/test_per_process.cc b/test/cctest/test_per_process.cc
new file mode 100644
index 00000000000000..43af8dd65a72d0
--- /dev/null
+++ b/test/cctest/test_per_process.cc
@@ -0,0 +1,34 @@
+#include "node_native_module.h"
+
+#include "gtest/gtest.h"
+#include "node_test_fixture.h"
+
+#include <string>
+
+
+using node::native_module::NativeModuleLoader;
+using node::native_module::NativeModuleRecordMap;
+
+class PerProcessTest : public ::testing::Test {
+ protected:
+  static const NativeModuleRecordMap get_sources_for_test() {
+    return NativeModuleLoader::instance_.source_;
+  }
+};
+
+namespace {
+
+TEST_F(PerProcessTest, EmbeddedSources) {
+  const auto& sources = PerProcessTest::get_sources_for_test();
+  ASSERT_TRUE(
+    std::any_of(sources.cbegin(), sources.cend(),
+                [](auto p){ return p.second.is_one_byte(); }))
+      << "NativeModuleLoader::source_ should have some 8bit items";
+
+  ASSERT_TRUE(
+    std::any_of(sources.cbegin(), sources.cend(),
+                [](auto p){ return !p.second.is_one_byte(); }))
+      << "NativeModuleLoader::source_ should have some 16bit items";
+}
+
+}  // end namespace
diff --git a/tools/js2c.py b/tools/js2c.py
index 413158765551d3..c3ac53f14b7391 100755
--- a/tools/js2c.py
+++ b/tools/js2c.py
@@ -200,6 +200,12 @@ def ReadMacros(macro_files):
 }}  // namespace node
 """
 
+ONE_BYTE_STRING = """
+static const uint8_t {0}[] = {{
+{1}
+}};
+"""
+
 TWO_BYTE_STRING = """
 static const uint16_t {0}[] = {{
 {1}
@@ -215,15 +221,25 @@ def ReadMacros(macro_files):
 is_verbose = False
 
 def GetDefinition(var, source, step=30):
-  encoded_source = bytearray(source, 'utf-16le')
-  code_points = [encoded_source[i] + (encoded_source[i+1] * 256) for i in range(0, len(encoded_source), 2)]
+  template = ONE_BYTE_STRING
+  code_points = [ord(c) for c in source]
+  if any(c > 127 for c in code_points):
+    template = TWO_BYTE_STRING
+    # Treat non-ASCII as UTF-8 and encode as UTF-16 Little Endian.
+    encoded_source = bytearray(source, 'utf-16le')
+    code_points = [
+      encoded_source[i] + (encoded_source[i + 1] * 256)
+      for i in range(0, len(encoded_source), 2)
+    ]
+
   # For easier debugging, align to the common 3 char for code-points.
   elements_s = ['%3s' % x for x in code_points]
   # Put no more then `step` code-points in a line.
   slices = [elements_s[i:i + step] for i in range(0, len(elements_s), step)]
   lines = [','.join(s) for s in slices]
   array_content = ',\n'.join(lines)
-  definition = TWO_BYTE_STRING.format(var, array_content)
+  definition = template.format(var, array_content)
+
   return definition, len(code_points)