From 651bfde7654687f373fc7870a7148bb6bc3236af Mon Sep 17 00:00:00 2001
From: Geoffrey Booth <webadmin@geoffreybooth.com>
Date: Sat, 14 Oct 2023 10:32:09 -0700
Subject: [PATCH] Abstract common code

---
 src/node_contextify.cc | 107 +++++++++++++++++++++--------------------
 src/node_contextify.h  |  13 +++++
 2 files changed, 67 insertions(+), 53 deletions(-)

diff --git a/src/node_contextify.cc b/src/node_contextify.cc
index bbc3d8b8ea66a3..8f255c87b8e74c 100644
--- a/src/node_contextify.cc
+++ b/src/node_contextify.cc
@@ -1206,31 +1206,12 @@ void ContextifyContext::CompileFunction(
       data + cached_data_buf->ByteOffset(), cached_data_buf->ByteLength());
   }
 
-  // Set host_defined_options
-  Local<PrimitiveArray> host_defined_options =
-      PrimitiveArray::New(isolate, loader::HostDefinedOptions::kLength);
-  host_defined_options->Set(
-      isolate, loader::HostDefinedOptions::kID, id_symbol);
-
-  ScriptOrigin origin(isolate,
-                      filename,
-                      line_offset,       // line offset
-                      column_offset,     // column offset
-                      true,              // is cross origin
-                      -1,                // script id
-                      Local<Value>(),    // source map URL
-                      false,             // is opaque (?)
-                      false,             // is WASM
-                      false,             // is ES Module
-                      host_defined_options);
-
-  ScriptCompiler::Source source = ScriptCompiler::Source(code, origin, cached_data);
-  ScriptCompiler::CompileOptions options;
-  if (source.GetCachedData() == nullptr) {
-    options = ScriptCompiler::kNoCompileOptions;
-  } else {
-    options = ScriptCompiler::kConsumeCodeCache;
-  }
+  Local<PrimitiveArray> host_defined_options = GetHostDefinedOptions(
+    isolate, id_symbol);
+  ScriptCompiler::Source source = GetCommonJSSourceInstance(
+    isolate, code, filename, line_offset, column_offset, host_defined_options,
+    cached_data);
+  ScriptCompiler::CompileOptions options = GetCompileOptions(source);
 
   Context::Scope scope(parsing_context);
 
@@ -1279,6 +1260,49 @@ void ContextifyContext::CompileFunction(
   args.GetReturnValue().Set(result);
 }
 
+Local<PrimitiveArray> ContextifyContext::GetHostDefinedOptions(
+    Isolate* isolate,
+    Local<Symbol> id_symbol) {
+  Local<PrimitiveArray> host_defined_options =
+      PrimitiveArray::New(isolate, loader::HostDefinedOptions::kLength);
+  host_defined_options->Set(
+      isolate, loader::HostDefinedOptions::kID, id_symbol);
+  return host_defined_options;
+}
+
+ScriptCompiler::Source ContextifyContext::GetCommonJSSourceInstance(
+    Isolate* isolate,
+    Local<String> code,
+    Local<String> filename,
+    int line_offset,
+    int column_offset,
+    Local<PrimitiveArray> host_defined_options,
+    ScriptCompiler::CachedData* cached_data) {
+  ScriptOrigin origin(isolate,
+                      filename,
+                      line_offset,                          // line offset
+                      column_offset,                        // column offset
+                      true,                                 // is cross origin
+                      -1,                                   // script id
+                      Local<Value>(),                       // source map URL
+                      false,                                // is opaque (?)
+                      false,                                // is WASM
+                      false,                                // is ES Module
+                      host_defined_options);
+  return ScriptCompiler::Source(code, origin, cached_data);
+}
+
+ScriptCompiler::CompileOptions ContextifyContext::GetCompileOptions(
+  const ScriptCompiler::Source& source) {
+  ScriptCompiler::CompileOptions options;
+  if (source.GetCachedData() != nullptr) {
+    options = ScriptCompiler::kConsumeCodeCache;
+  } else {
+    options = ScriptCompiler::kNoCompileOptions;
+  }
+  return options;
+}
+
 Local<Object> ContextifyContext::CompileFunctionAndCacheResult(
   Environment* env,
   Local<Context> parsing_context,
@@ -1373,34 +1397,11 @@ void ContextifyContext::ContainsModuleSyntax(
       String::NewFromUtf8(isolate, "cjs:").ToLocalChecked(), filename))
       .As<Symbol>();
 
-  // TODO: Abstract this into a separate function
-  // Set host_defined_options
-  Local<PrimitiveArray> host_defined_options =
-      PrimitiveArray::New(isolate, loader::HostDefinedOptions::kLength);
-  host_defined_options->Set(
-      isolate, loader::HostDefinedOptions::kID, id_symbol);
-
-  ScriptOrigin origin(isolate,
-                      filename,
-                      0,                 // line offset
-                      0,                 // column offset
-                      true,              // is cross origin
-                      -1,                // script id
-                      Local<Value>(),    // source map URL
-                      false,             // is opaque (?)
-                      false,             // is WASM
-                      false,             // is ES Module
-                      host_defined_options);
-
-  ScriptCompiler::CachedData* cached_data = nullptr;
-  ScriptCompiler::Source source = ScriptCompiler::Source(code, origin, cached_data);
-  ScriptCompiler::CompileOptions options;
-  if (source.GetCachedData() == nullptr) {
-    options = ScriptCompiler::kNoCompileOptions;
-  } else {
-    options = ScriptCompiler::kConsumeCodeCache;
-  }
-  // End TODO
+  Local<PrimitiveArray> host_defined_options = GetHostDefinedOptions(
+    isolate, id_symbol);
+  ScriptCompiler::Source source = GetCommonJSSourceInstance(
+    isolate, code, filename, 0, 0, host_defined_options, nullptr);
+  ScriptCompiler::CompileOptions options = GetCompileOptions(source);
 
   std::vector<Local<String>> params = {
     String::NewFromUtf8(isolate, "exports").ToLocalChecked(),
diff --git a/src/node_contextify.h b/src/node_contextify.h
index 9779711e33e440..a49c052a285dcf 100644
--- a/src/node_contextify.h
+++ b/src/node_contextify.h
@@ -93,6 +93,19 @@ class ContextifyContext : public BaseObject {
       bool produce_cached_data,
       v8::Local<v8::Symbol> id_symbol,
       const errors::TryCatchScope& try_catch);
+  static v8::Local<v8::PrimitiveArray> GetHostDefinedOptions(
+      v8::Isolate* isolate,
+      v8::Local<v8::Symbol> id_symbol);
+  static v8::ScriptCompiler::Source GetCommonJSSourceInstance(
+      v8::Isolate* isolate,
+      v8::Local<v8::String> code,
+      v8::Local<v8::String> filename,
+      int line_offset,
+      int column_offset,
+      v8::Local<v8::PrimitiveArray> host_defined_options,
+      v8::ScriptCompiler::CachedData* cached_data);
+  static v8::ScriptCompiler::CompileOptions GetCompileOptions(
+      const v8::ScriptCompiler::Source& source);
   static void ContainsModuleSyntax(
       const v8::FunctionCallbackInfo<v8::Value>& args);
   static void WeakCallback(