js/src/vm/Value.cpp

   1 /* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*-
   2  * vim: set ts=8 sts=2 et sw=2 tw=80:
   3  * This Source Code Form is subject to the terms of the Mozilla Public
   4  * License, v. 2.0. If a copy of the MPL was not distributed with this
   5  * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
   6
   7 #include "js/Value.h"
   8
   9 #include "mozilla/Assertions.h"
  10
  11 #include <inttypes.h>
  12
  13 static const JS::Value JSVAL_NULL =
  14     JS::Value::fromTagAndPayload(JSVAL_TAG_NULL, 0);
  15 static const JS::Value JSVAL_FALSE =
  16     JS::Value::fromTagAndPayload(JSVAL_TAG_BOOLEAN, false);
  17 static const JS::Value JSVAL_TRUE =
  18     JS::Value::fromTagAndPayload(JSVAL_TAG_BOOLEAN, true);
  19 static const JS::Value JSVAL_VOID =
  20     JS::Value::fromTagAndPayload(JSVAL_TAG_UNDEFINED, 0);
  21 static const mozilla::Maybe<JS::Value> JSVAL_NOTHING;
  22
  23 namespace JS {
  24
  25 const HandleValue NullHandleValue =
  26     HandleValue::fromMarkedLocation(&JSVAL_NULL);
  27 const HandleValue UndefinedHandleValue =
  28     HandleValue::fromMarkedLocation(&JSVAL_VOID);
  29 const HandleValue TrueHandleValue =
  30     HandleValue::fromMarkedLocation(&JSVAL_TRUE);
  31 const HandleValue FalseHandleValue =
  32     HandleValue::fromMarkedLocation(&JSVAL_FALSE);
  33 const Handle<mozilla::Maybe<Value>> NothingHandleValue =
  34     Handle<mozilla::Maybe<Value>>::fromMarkedLocation(&JSVAL_NOTHING);
  35
  36 }  // namespace JS
  37
  38 void js::ReportBadValueTypeAndCrash(const JS::Value& value) {
  39   MOZ_CRASH_UNSAFE_PRINTF("JS::Value has illegal type: 0x%" PRIx64,
  40                           value.asRawBits());
  41 }