1 files changed, 252 insertions, 0 deletions
diff --git a/js/public/ContextOptions.h b/js/public/ContextOptions.h
new file mode 100644
index 0000000000..2077a5ceea
--- /dev/null
+++ b/js/public/ContextOptions.h
@@ -0,0 +1,252 @@
+/* -*- 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/. */
+
+/* JavaScript API. */
+
+#ifndef js_ContextOptions_h
+#define js_ContextOptions_h
+
+#include "jstypes.h"  // JS_PUBLIC_API
+
+#include "js/WasmFeatures.h"
+
+struct JS_PUBLIC_API JSContext;
+
+namespace JS {
+
+class JS_PUBLIC_API ContextOptions {
+ public:
+  // clang-format off
+  ContextOptions()
+      : asmJS_(true),
+        wasm_(true),
+        wasmForTrustedPrinciples_(true),
+        wasmVerbose_(false),
+        wasmBaseline_(true),
+        wasmIon_(true),
+#define WASM_DEFAULT_FEATURE(NAME, ...) wasm##NAME##_(true),
+#define WASM_EXPERIMENTAL_FEATURE(NAME, ...) wasm##NAME##_(false),
+        JS_FOR_WASM_FEATURES(WASM_DEFAULT_FEATURE, WASM_DEFAULT_FEATURE, WASM_EXPERIMENTAL_FEATURE)
+#undef WASM_DEFAULT_FEATURE
+#undef WASM_EXPERIMENTAL_FEATURE
+        testWasmAwaitTier2_(false),
+        throwOnAsmJSValidationFailure_(false),
+        disableIon_(false),
+        disableEvalSecurityChecks_(false),
+        asyncStack_(true),
+        asyncStackCaptureDebuggeeOnly_(false),
+        sourcePragmas_(true),
+        throwOnDebuggeeWouldRun_(true),
+        dumpStackOnDebuggeeWouldRun_(false),
+        strictMode_(false),
+#ifdef JS_ENABLE_SMOOSH
+        trackNotImplemented_(false),
+        trySmoosh_(false),
+#endif
+        fuzzing_(false),
+        importAssertions_(false) {
+  }
+  // clang-format on
+
+  bool asmJS() const { return asmJS_; }
+  ContextOptions& setAsmJS(bool flag) {
+    asmJS_ = flag;
+    return *this;
+  }
+  ContextOptions& toggleAsmJS() {
+    asmJS_ = !asmJS_;
+    return *this;
+  }
+
+  bool wasm() const { return wasm_; }
+  ContextOptions& setWasm(bool flag) {
+    wasm_ = flag;
+    return *this;
+  }
+  ContextOptions& toggleWasm() {
+    wasm_ = !wasm_;
+    return *this;
+  }
+
+  bool wasmForTrustedPrinciples() const { return wasmForTrustedPrinciples_; }
+  ContextOptions& setWasmForTrustedPrinciples(bool flag) {
+    wasmForTrustedPrinciples_ = flag;
+    return *this;
+  }
+
+  bool wasmVerbose() const { return wasmVerbose_; }
+  ContextOptions& setWasmVerbose(bool flag) {
+    wasmVerbose_ = flag;
+    return *this;
+  }
+
+  bool wasmBaseline() const { return wasmBaseline_; }
+  ContextOptions& setWasmBaseline(bool flag) {
+    wasmBaseline_ = flag;
+    return *this;
+  }
+
+  bool wasmIon() const { return wasmIon_; }
+  ContextOptions& setWasmIon(bool flag) {
+    wasmIon_ = flag;
+    return *this;
+  }
+
+  bool testWasmAwaitTier2() const { return testWasmAwaitTier2_; }
+  ContextOptions& setTestWasmAwaitTier2(bool flag) {
+    testWasmAwaitTier2_ = flag;
+    return *this;
+  }
+
+#define WASM_FEATURE(NAME, ...)                     \
+  bool wasm##NAME() const { return wasm##NAME##_; } \
+  ContextOptions& setWasm##NAME(bool flag) {        \
+    wasm##NAME##_ = flag;                           \
+    return *this;                                   \
+  }
+  JS_FOR_WASM_FEATURES(WASM_FEATURE, WASM_FEATURE, WASM_FEATURE)
+#undef WASM_FEATURE
+
+  bool throwOnAsmJSValidationFailure() const {
+    return throwOnAsmJSValidationFailure_;
+  }
+  ContextOptions& setThrowOnAsmJSValidationFailure(bool flag) {
+    throwOnAsmJSValidationFailure_ = flag;
+    return *this;
+  }
+  ContextOptions& toggleThrowOnAsmJSValidationFailure() {
+    throwOnAsmJSValidationFailure_ = !throwOnAsmJSValidationFailure_;
+    return *this;
+  }
+
+  // Override to allow disabling Ion for this context irrespective of the
+  // process-wide Ion-enabled setting. This must be set right after creating
+  // the context.
+  bool disableIon() const { return disableIon_; }
+  ContextOptions& setDisableIon() {
+    disableIon_ = true;
+    return *this;
+  }
+
+  bool importAssertions() const { return importAssertions_; }
+  ContextOptions& setImportAssertions(bool enabled) {
+    importAssertions_ = enabled;
+    return *this;
+  }
+
+  // Override to allow disabling the eval restriction security checks for
+  // this context.
+  bool disableEvalSecurityChecks() const { return disableEvalSecurityChecks_; }
+  ContextOptions& setDisableEvalSecurityChecks() {
+    disableEvalSecurityChecks_ = true;
+    return *this;
+  }
+
+  bool asyncStack() const { return asyncStack_; }
+  ContextOptions& setAsyncStack(bool flag) {
+    asyncStack_ = flag;
+    return *this;
+  }
+
+  bool asyncStackCaptureDebuggeeOnly() const {
+    return asyncStackCaptureDebuggeeOnly_;
+  }
+  ContextOptions& setAsyncStackCaptureDebuggeeOnly(bool flag) {
+    asyncStackCaptureDebuggeeOnly_ = flag;
+    return *this;
+  }
+
+  // Enable/disable support for parsing '//(#@) source(Mapping)?URL=' pragmas.
+  bool sourcePragmas() const { return sourcePragmas_; }
+  ContextOptions& setSourcePragmas(bool flag) {
+    sourcePragmas_ = flag;
+    return *this;
+  }
+
+  bool throwOnDebuggeeWouldRun() const { return throwOnDebuggeeWouldRun_; }
+  ContextOptions& setThrowOnDebuggeeWouldRun(bool flag) {
+    throwOnDebuggeeWouldRun_ = flag;
+    return *this;
+  }
+
+  bool dumpStackOnDebuggeeWouldRun() const {
+    return dumpStackOnDebuggeeWouldRun_;
+  }
+  ContextOptions& setDumpStackOnDebuggeeWouldRun(bool flag) {
+    dumpStackOnDebuggeeWouldRun_ = flag;
+    return *this;
+  }
+
+  bool strictMode() const { return strictMode_; }
+  ContextOptions& setStrictMode(bool flag) {
+    strictMode_ = flag;
+    return *this;
+  }
+  ContextOptions& toggleStrictMode() {
+    strictMode_ = !strictMode_;
+    return *this;
+  }
+
+#ifdef JS_ENABLE_SMOOSH
+  // Track Number of Not Implemented Calls by writing to a file
+  bool trackNotImplemented() const { return trackNotImplemented_; }
+  ContextOptions& setTrackNotImplemented(bool flag) {
+    trackNotImplemented_ = flag;
+    return *this;
+  }
+
+  // Try compiling SmooshMonkey frontend first, and fallback to C++
+  // implementation when it fails.
+  bool trySmoosh() const { return trySmoosh_; }
+  ContextOptions& setTrySmoosh(bool flag) {
+    trySmoosh_ = flag;
+    return *this;
+  }
+
+#endif  // JS_ENABLE_SMOOSH
+
+  bool fuzzing() const { return fuzzing_; }
+  // Defined out-of-line because it depends on a compile-time option
+  ContextOptions& setFuzzing(bool flag);
+
+  void disableOptionsForSafeMode() {
+    setAsmJS(false);
+    setWasmBaseline(false);
+  }
+
+ private:
+  bool asmJS_ : 1;
+  bool wasm_ : 1;
+  bool wasmForTrustedPrinciples_ : 1;
+  bool wasmVerbose_ : 1;
+  bool wasmBaseline_ : 1;
+  bool wasmIon_ : 1;
+#define WASM_FEATURE(NAME, ...) bool wasm##NAME##_ : 1;
+  JS_FOR_WASM_FEATURES(WASM_FEATURE, WASM_FEATURE, WASM_FEATURE)
+#undef WASM_FEATURE
+  bool testWasmAwaitTier2_ : 1;
+  bool throwOnAsmJSValidationFailure_ : 1;
+  bool disableIon_ : 1;
+  bool disableEvalSecurityChecks_ : 1;
+  bool asyncStack_ : 1;
+  bool asyncStackCaptureDebuggeeOnly_ : 1;
+  bool sourcePragmas_ : 1;
+  bool throwOnDebuggeeWouldRun_ : 1;
+  bool dumpStackOnDebuggeeWouldRun_ : 1;
+  bool strictMode_ : 1;
+#ifdef JS_ENABLE_SMOOSH
+  bool trackNotImplemented_ : 1;
+  bool trySmoosh_ : 1;
+#endif
+  bool fuzzing_ : 1;
+  bool importAssertions_ : 1;
+};
+
+JS_PUBLIC_API ContextOptions& ContextOptionsRef(JSContext* cx);
+
+}  // namespace JS
+
+#endif  // js_ContextOptions_h