1 files changed, 130 insertions, 0 deletions
diff --git a/js/src/frontend/BytecodeCompilation.h b/js/src/frontend/BytecodeCompilation.h
new file mode 100644
index 0000000000..25737a559f
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+++ b/js/src/frontend/BytecodeCompilation.h
@@ -0,0 +1,130 @@
+/* -*- 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/Assertions.h"  // MOZ_ASSERT
+#include "mozilla/Attributes.h"  // MOZ_MUST_USE, MOZ_STACK_CLASS
+#include "mozilla/Maybe.h"       // mozilla::Maybe, mozilla::Nothing
+#include "mozilla/Utf8.h"        // mozilla::Utf8Unit
+
+#include <stddef.h>  // size_t
+#include <stdint.h>  // uint32_t
+
+#include "jstypes.h"  // JS_PUBLIC_API
+
+#include "frontend/CompilationInfo.h"  // CompilationStencil, CompilationStencilSet, CompilationGCOutput
+#include "frontend/ParseContext.h"  // js::frontend::UsedNameTracker
+#include "frontend/SharedContext.h"  // js::frontend::Directives, js::frontend::{,Eval,Global}SharedContext
+#include "js/CompileOptions.h"  // JS::ReadOnlyCompileOptions
+#include "js/RootingAPI.h"      // JS::{,Mutable}Handle, JS::Rooted
+#include "js/SourceText.h"      // JS::SourceText
+#include "js/UniquePtr.h"       // js::UniquePtr
+#include "vm/JSScript.h"  // js::{FunctionAsync,Generator}Kind, js::BaseScript, JSScript, js::ScriptSource, js::ScriptSourceObject
+#include "vm/Scope.h"     // js::ScopeKind
+
+class JS_PUBLIC_API JSFunction;
+class JS_PUBLIC_API JSObject;
+
+class JSObject;
+
+namespace js {
+
+class Scope;
+
+namespace frontend {
+
+struct BytecodeEmitter;
+class EitherParser;
+
+template <typename Unit>
+class SourceAwareCompiler;
+template <typename Unit>
+class ScriptCompiler;
+template <typename Unit>
+class ModuleCompiler;
+template <typename Unit>
+class StandaloneFunctionCompiler;
+
+extern bool CompileGlobalScriptToStencil(JSContext* cx,
+                                         CompilationStencil& stencil,
+                                         JS::SourceText<char16_t>& srcBuf,
+                                         ScopeKind scopeKind);
+
+extern bool CompileGlobalScriptToStencil(
+    JSContext* cx, CompilationStencil& stencil,
+    JS::SourceText<mozilla::Utf8Unit>& srcBuf, ScopeKind scopeKind);
+
+extern UniquePtr<CompilationStencil> CompileGlobalScriptToStencil(
+    JSContext* cx, const JS::ReadOnlyCompileOptions& options,
+    JS::SourceText<char16_t>& srcBuf, ScopeKind scopeKind);
+
+extern UniquePtr<CompilationStencil> CompileGlobalScriptToStencil(
+    JSContext* cx, const JS::ReadOnlyCompileOptions& options,
+    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.
+extern bool PrepareForInstantiate(JSContext* cx, CompilationStencil& stencil,
+                                  CompilationGCOutput& gcOutput);
+extern bool PrepareForInstantiate(
+    JSContext* cx, CompilationStencilSet& stencilSet,
+    CompilationGCOutput& gcOutput,
+    CompilationGCOutput& gcOutputForDelazification);
+
+extern bool InstantiateStencils(JSContext* cx, CompilationStencil& stencil,
+                                CompilationGCOutput& gcOutput);
+
+extern bool InstantiateStencils(JSContext* cx,
+                                CompilationStencilSet& stencilSet,
+                                CompilationGCOutput& gcOutput,
+                                CompilationGCOutput& gcOutputForDelazification);
+
+extern JSScript* CompileGlobalScript(JSContext* cx,
+                                     const JS::ReadOnlyCompileOptions& options,
+                                     JS::SourceText<char16_t>& srcBuf,
+                                     ScopeKind scopeKind);
+
+extern JSScript* CompileGlobalScript(JSContext* cx,
+                                     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 void FillCompileOptionsForLazyFunction(JS::CompileOptions& options,
+                                              Handle<BaseScript*> lazy);
+
+extern MOZ_MUST_USE bool CompileLazyFunctionToStencil(
+    JSContext* cx, CompilationStencil& stencil, JS::Handle<BaseScript*> lazy,
+    const char16_t* units, size_t length);
+
+extern MOZ_MUST_USE bool CompileLazyFunctionToStencil(
+    JSContext* cx, CompilationStencil& stencil, JS::Handle<BaseScript*> lazy,
+    const mozilla::Utf8Unit* units, size_t length);
+
+extern bool InstantiateStencilsForDelazify(JSContext* cx,
+                                           CompilationStencil& stencil);
+
+// Certain compile options will disable the syntax parser entirely.
+inline bool CanLazilyParse(const JS::ReadOnlyCompileOptions& options) {
+  return !options.discardSource && !options.sourceIsLazy &&
+         !options.forceFullParse();
+}
+
+}  // namespace frontend
+
+}  // namespace js
+
+#endif  // frontend_BytecodeCompilation_h