1 files changed, 108 insertions, 0 deletions
diff --git a/js/src/frontend/BytecodeCompilation.h b/js/src/frontend/BytecodeCompilation.h
new file mode 100644
index 0000000000..f6bd649725
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+++ b/js/src/frontend/BytecodeCompilation.h
@@ -0,0 +1,108 @@
+/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*-
+ * vim: set ts=8 sts=2 et sw=2 tw=80:
+ * This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
+
+#ifndef frontend_BytecodeCompilation_h
+#define frontend_BytecodeCompilation_h
+
+#include "mozilla/AlreadyAddRefed.h"
+#include "mozilla/Utf8.h"  // mozilla::Utf8Unit
+
+#include "frontend/ScriptIndex.h"  // ScriptIndex
+#include "js/CompileOptions.h"  // JS::ReadOnlyCompileOptions, JS::InstantiateOptions
+#include "js/SourceText.h"  // JS::SourceText
+#include "js/TypeDecls.h"   // JS::Handle (fwd)
+#include "js/UniquePtr.h"   // js::UniquePtr
+#include "vm/ScopeKind.h"   // js::ScopeKind
+
+namespace js {
+
+class Scope;
+class LifoAlloc;
+class FrontendContext;
+
+namespace frontend {
+
+struct CompilationInput;
+struct CompilationGCOutput;
+struct CompilationStencil;
+struct ExtensibleCompilationStencil;
+class ScopeBindingCache;
+
+extern already_AddRefed<CompilationStencil> CompileGlobalScriptToStencil(
+    JSContext* maybeCx, FrontendContext* fc, js::LifoAlloc& tempLifoAlloc,
+    CompilationInput& input, ScopeBindingCache* scopeCache,
+    JS::SourceText<char16_t>& srcBuf, ScopeKind scopeKind);
+
+extern already_AddRefed<CompilationStencil> CompileGlobalScriptToStencil(
+    JSContext* maybeCx, FrontendContext* fc, js::LifoAlloc& tempLifoAlloc,
+    CompilationInput& input, ScopeBindingCache* scopeCache,
+    JS::SourceText<mozilla::Utf8Unit>& srcBuf, ScopeKind scopeKind);
+
+extern UniquePtr<ExtensibleCompilationStencil>
+CompileGlobalScriptToExtensibleStencil(JSContext* maybeCx, FrontendContext* fc,
+                                       CompilationInput& input,
+                                       ScopeBindingCache* scopeCache,
+                                       JS::SourceText<char16_t>& srcBuf,
+                                       ScopeKind scopeKind);
+
+extern UniquePtr<ExtensibleCompilationStencil>
+CompileGlobalScriptToExtensibleStencil(
+    JSContext* maybeCx, FrontendContext* fc, CompilationInput& input,
+    ScopeBindingCache* scopeCache, JS::SourceText<mozilla::Utf8Unit>& srcBuf,
+    ScopeKind scopeKind);
+
+// Perform some operation to reduce the time taken by instantiation.
+//
+// Part of InstantiateStencils can be done by calling PrepareForInstantiate.
+// PrepareForInstantiate is GC-free operation that can be performed
+// off-main-thread without parse global.
+[[nodiscard]] extern bool PrepareForInstantiate(
+    JSContext* maybeCx, FrontendContext* fc, CompilationInput& input,
+    const CompilationStencil& stencil, CompilationGCOutput& gcOutput);
+
+[[nodiscard]] extern bool InstantiateStencils(JSContext* cx,
+                                              CompilationInput& input,
+                                              const CompilationStencil& stencil,
+                                              CompilationGCOutput& gcOutput);
+
+extern JSScript* CompileGlobalScript(JSContext* cx, FrontendContext* fc,
+                                     const JS::ReadOnlyCompileOptions& options,
+                                     JS::SourceText<char16_t>& srcBuf,
+                                     ScopeKind scopeKind);
+
+extern JSScript* CompileGlobalScript(JSContext* cx, FrontendContext* fc,
+                                     const JS::ReadOnlyCompileOptions& options,
+                                     JS::SourceText<mozilla::Utf8Unit>& srcBuf,
+                                     ScopeKind scopeKind);
+
+extern JSScript* CompileEvalScript(JSContext* cx,
+                                   const JS::ReadOnlyCompileOptions& options,
+                                   JS::SourceText<char16_t>& srcBuf,
+                                   JS::Handle<js::Scope*> enclosingScope,
+                                   JS::Handle<JSObject*> enclosingEnv);
+
+extern bool DelazifyCanonicalScriptedFunction(JSContext* cx,
+                                              FrontendContext* fc,
+                                              JS::Handle<JSFunction*> fun);
+
+extern already_AddRefed<CompilationStencil> DelazifyCanonicalScriptedFunction(
+    JSContext* cx, FrontendContext* fc, ScopeBindingCache* scopeCache,
+    CompilationStencil& context, ScriptIndex scriptIndex);
+
+// Certain compile options will disable the syntax parser entirely.
+inline bool CanLazilyParse(const JS::ReadOnlyCompileOptions& options) {
+  return !options.discardSource && !options.sourceIsLazy &&
+         !options.forceFullParse();
+}
+
+void FireOnNewScript(JSContext* cx, const JS::InstantiateOptions& options,
+                     JS::Handle<JSScript*> script);
+
+}  // namespace frontend
+
+}  // namespace js
+
+#endif  // frontend_BytecodeCompilation_h