runtime/JSFunctionInlines.h

   1 /*
   2  * Copyright (C) 2013 Apple Inc. All rights reserved.
   3  *
   4  * Redistribution and use in source and binary forms, with or without
   5  * modification, are permitted provided that the following conditions
   6  * are met:
   7  * 1. Redistributions of source code must retain the above copyright
   8  *    notice, this list of conditions and the following disclaimer.
   9  * 2. Redistributions in binary form must reproduce the above copyright
  10  *    notice, this list of conditions and the following disclaimer in the
  11  *    documentation and/or other materials provided with the distribution.
  12  *
  13  * THIS SOFTWARE IS PROVIDED BY APPLE INC. ``AS IS'' AND ANY
  14  * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
  15  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
  16  * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL APPLE INC. OR
  17  * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
  18  * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
  19  * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
  20  * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY
  21  * OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
  22  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
  23  * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  24  */
  25
  26 #ifndef JSFunctionInlines_h
  27 #define JSFunctionInlines_h
  28
  29 #include "Executable.h"
  30 #include "JSFunction.h"
  31
  32 namespace JSC {
  33
  34 inline JSFunction::JSFunction(VM& vm, FunctionExecutable* executable, JSScope* scope)
  35     : Base(vm, scope->globalObject()->functionStructure())
  36     , m_executable(vm, this, executable)
  37     , m_scope(vm, this, scope)
  38     , m_allocationProfileWatchpoint(ClearWatchpoint) // See comment in JSFunction.cpp concerning the reason for using ClearWatchpoint as opposed to IsWatched.
  39 {
  40 }
  41
  42 inline FunctionExecutable* JSFunction::jsExecutable() const
  43 {
  44     ASSERT(!isHostFunctionNonInline());
  45     return static_cast<FunctionExecutable*>(m_executable.get());
  46 }
  47
  48 inline bool JSFunction::isHostFunction() const
  49 {
  50     ASSERT(m_executable);
  51     return m_executable->isHostFunction();
  52 }
  53
  54 inline bool JSFunction::isBuiltinFunction() const
  55 {
  56     return !isHostFunction() && jsExecutable()->isBuiltinFunction();
  57 }
  58
  59 inline bool JSFunction::isHostOrBuiltinFunction() const
  60 {
  61     return isHostFunction() || isBuiltinFunction();
  62 }
  63
  64 inline NativeFunction JSFunction::nativeFunction()
  65 {
  66     ASSERT(isHostFunctionNonInline());
  67     return static_cast<NativeExecutable*>(m_executable.get())->function();
  68 }
  69
  70 inline NativeFunction JSFunction::nativeConstructor()
  71 {
  72     ASSERT(isHostFunctionNonInline());
  73     return static_cast<NativeExecutable*>(m_executable.get())->constructor();
  74 }
  75
  76 inline bool isHostFunction(JSValue value, NativeFunction nativeFunction)
  77 {
  78     JSFunction* function = jsCast<JSFunction*>(getJSFunction(value));
  79     if (!function || !function->isHostFunction())
  80         return false;
  81     return function->nativeFunction() == nativeFunction;
  82 }
  83
  84 } // namespace JSC
  85
  86 #endif // JSFunctionInlines_h
  87