1 files changed, 129 insertions, 0 deletions
diff --git a/src/objects/module-info.h b/src/objects/module-info.h
new file mode 100644
index 00000000..099ee5f6
--- /dev/null
+++ b/src/objects/module-info.h
@@ -0,0 +1,129 @@
+// Copyright 2017 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.
+
+#ifndef V8_OBJECTS_MODULE_INFO_H_
+#define V8_OBJECTS_MODULE_INFO_H_
+
+#include "src/objects.h"
+
+// Has to be the last include (doesn't have include guards):
+#include "src/objects/object-macros.h"
+
+namespace v8 {
+namespace internal {
+
+template <typename T>
+class Handle;
+class Isolate;
+class ModuleDescriptor;
+class ModuleInfoEntry;
+class String;
+class Zone;
+
+// ModuleInfo is to ModuleDescriptor what ScopeInfo is to Scope.
+class ModuleInfo : public FixedArray {
+ public:
+  DECLARE_CAST(ModuleInfo)
+
+  static Handle<ModuleInfo> New(Isolate* isolate, Zone* zone,
+                                ModuleDescriptor* descr);
+
+  inline FixedArray* module_requests() const {
+    return FixedArray::cast(get(kModuleRequestsIndex));
+  }
+
+  inline FixedArray* special_exports() const {
+    return FixedArray::cast(get(kSpecialExportsIndex));
+  }
+
+  inline FixedArray* regular_exports() const {
+    return FixedArray::cast(get(kRegularExportsIndex));
+  }
+
+  inline FixedArray* regular_imports() const {
+    return FixedArray::cast(get(kRegularImportsIndex));
+  }
+
+  inline FixedArray* namespace_imports() const {
+    return FixedArray::cast(get(kNamespaceImportsIndex));
+  }
+
+  // Accessors for [regular_exports].
+  int RegularExportCount() const;
+  String* RegularExportLocalName(int i) const;
+  int RegularExportCellIndex(int i) const;
+  FixedArray* RegularExportExportNames(int i) const;
+
+  static Handle<ModuleInfoEntry> LookupRegularImport(Handle<ModuleInfo> info,
+                                                     Handle<String> local_name);
+
+#ifdef DEBUG
+  inline bool Equals(ModuleInfo* other) const {
+    return regular_exports() == other->regular_exports() &&
+           regular_imports() == other->regular_imports() &&
+           special_exports() == other->special_exports() &&
+           namespace_imports() == other->namespace_imports();
+  }
+#endif
+
+ private:
+  friend class Factory;
+  friend class ModuleDescriptor;
+  enum {
+    kModuleRequestsIndex,
+    kSpecialExportsIndex,
+    kRegularExportsIndex,
+    kNamespaceImportsIndex,
+    kRegularImportsIndex,
+    kLength
+  };
+  enum {
+    kRegularExportLocalNameOffset,
+    kRegularExportCellIndexOffset,
+    kRegularExportExportNamesOffset,
+    kRegularExportLength
+  };
+  DISALLOW_IMPLICIT_CONSTRUCTORS(ModuleInfo);
+};
+
+class ModuleInfoEntry : public Struct {
+ public:
+  DECLARE_CAST(ModuleInfoEntry)
+  DECLARE_PRINTER(ModuleInfoEntry)
+  DECLARE_VERIFIER(ModuleInfoEntry)
+
+  DECL_ACCESSORS(export_name, Object)
+  DECL_ACCESSORS(local_name, Object)
+  DECL_ACCESSORS(import_name, Object)
+  DECL_INT_ACCESSORS(module_request)
+  DECL_INT_ACCESSORS(cell_index)
+  DECL_INT_ACCESSORS(beg_pos)
+  DECL_INT_ACCESSORS(end_pos)
+
+  static Handle<ModuleInfoEntry> New(Isolate* isolate,
+                                     Handle<Object> export_name,
+                                     Handle<Object> local_name,
+                                     Handle<Object> import_name,
+                                     int module_request, int cell_index,
+                                     int beg_pos, int end_pos);
+
+  static const int kExportNameOffset = HeapObject::kHeaderSize;
+  static const int kLocalNameOffset = kExportNameOffset + kPointerSize;
+  static const int kImportNameOffset = kLocalNameOffset + kPointerSize;
+  static const int kModuleRequestOffset = kImportNameOffset + kPointerSize;
+  static const int kCellIndexOffset = kModuleRequestOffset + kPointerSize;
+  static const int kBegPosOffset = kCellIndexOffset + kPointerSize;
+  static const int kEndPosOffset = kBegPosOffset + kPointerSize;
+  static const int kSize = kEndPosOffset + kPointerSize;
+
+ private:
+  DISALLOW_IMPLICIT_CONSTRUCTORS(ModuleInfoEntry);
+};
+
+}  // namespace internal
+}  // namespace v8
+
+#include "src/objects/object-macros-undef.h"
+
+#endif  // V8_OBJECTS_MODULE_INFO_H_