| Index: third_party/chrome/base/basictypes.h
|
| diff --git a/third_party/chrome/base/basictypes.h b/third_party/chrome/base/basictypes.h
|
| deleted file mode 100644
|
| index 46b83648f6d0b3cc9261968a9598a53532762bc5..0000000000000000000000000000000000000000
|
| --- a/third_party/chrome/base/basictypes.h
|
| +++ /dev/null
|
| @@ -1,396 +0,0 @@
|
| -// Copyright (c) 2006-2008 The Chromium Authors. All rights reserved.
|
| -// Use of this source code is governed by a BSD-style license that can be
|
| -// found in the LICENSE file.
|
| -
|
| -#ifndef BASE_BASICTYPES_H_
|
| -#define BASE_BASICTYPES_H_
|
| -
|
| -#include <assert.h> // for use with down_cast<>
|
| -#include <limits.h> // So we can set the bounds of our types
|
| -#include <stddef.h> // For size_t
|
| -#include <string.h> // for memcpy
|
| -
|
| -#include "base/port.h" // Types that only need exist on certain systems
|
| -
|
| -#ifndef COMPILER_MSVC
|
| -// stdint.h is part of C99 but MSVC doesn't have it.
|
| -#include <stdint.h> // For intptr_t.
|
| -#endif
|
| -
|
| -typedef signed char schar;
|
| -typedef signed char int8;
|
| -typedef short int16;
|
| -// TODO(mbelshe) Remove these type guards. These are
|
| -// temporary to avoid conflicts with npapi.h.
|
| -#ifndef _INT32
|
| -#define _INT32
|
| -typedef int int32;
|
| -#endif
|
| -typedef long long int64;
|
| -
|
| -// NOTE: unsigned types are DANGEROUS in loops and other arithmetical
|
| -// places. Use the signed types unless your variable represents a bit
|
| -// pattern (eg a hash value) or you really need the extra bit. Do NOT
|
| -// use 'unsigned' to express "this value should always be positive";
|
| -// use assertions for this.
|
| -
|
| -typedef unsigned char uint8;
|
| -typedef unsigned short uint16;
|
| -// TODO(mbelshe) Remove these type guards. These are
|
| -// temporary to avoid conflicts with npapi.h.
|
| -#ifndef _UINT32
|
| -#define _UINT32
|
| -typedef unsigned int uint32;
|
| -#endif
|
| -typedef unsigned long long uint64;
|
| -
|
| -// A type to represent a Unicode code-point value. As of Unicode 4.0,
|
| -// such values require up to 21 bits.
|
| -// (For type-checking on pointers, make this explicitly signed,
|
| -// and it should always be the signed version of whatever int32 is.)
|
| -typedef signed int char32;
|
| -
|
| -const uint8 kuint8max = (( uint8) 0xFF);
|
| -const uint16 kuint16max = ((uint16) 0xFFFF);
|
| -const uint32 kuint32max = ((uint32) 0xFFFFFFFF);
|
| -const uint64 kuint64max = ((uint64) GG_LONGLONG(0xFFFFFFFFFFFFFFFF));
|
| -const int8 kint8min = (( int8) 0x80);
|
| -const int8 kint8max = (( int8) 0x7F);
|
| -const int16 kint16min = (( int16) 0x8000);
|
| -const int16 kint16max = (( int16) 0x7FFF);
|
| -const int32 kint32min = (( int32) 0x80000000);
|
| -const int32 kint32max = (( int32) 0x7FFFFFFF);
|
| -const int64 kint64min = (( int64) GG_LONGLONG(0x8000000000000000));
|
| -const int64 kint64max = (( int64) GG_LONGLONG(0x7FFFFFFFFFFFFFFF));
|
| -
|
| -// id for odp categories
|
| -typedef uint32 CatId;
|
| -const CatId kIllegalCatId = static_cast<CatId>(0);
|
| -
|
| -typedef uint32 TermId;
|
| -const TermId kIllegalTermId = static_cast<TermId>(0);
|
| -
|
| -typedef uint32 HostId;
|
| -const HostId kIllegalHostId = static_cast<HostId>(0);
|
| -
|
| -typedef uint32 DomainId;
|
| -const DomainId kIllegalDomainId = static_cast<DomainId>(0);
|
| -
|
| -// A macro to disallow the copy constructor and operator= functions
|
| -// This should be used in the private: declarations for a class
|
| -#define DISALLOW_COPY_AND_ASSIGN(TypeName) \
|
| - TypeName(const TypeName&); \
|
| - void operator=(const TypeName&)
|
| -
|
| -// An older, deprecated, politically incorrect name for the above.
|
| -#define DISALLOW_EVIL_CONSTRUCTORS(TypeName) DISALLOW_COPY_AND_ASSIGN(TypeName)
|
| -
|
| -// A macro to disallow all the implicit constructors, namely the
|
| -// default constructor, copy constructor and operator= functions.
|
| -//
|
| -// This should be used in the private: declarations for a class
|
| -// that wants to prevent anyone from instantiating it. This is
|
| -// especially useful for classes containing only static methods.
|
| -#define DISALLOW_IMPLICIT_CONSTRUCTORS(TypeName) \
|
| - TypeName(); \
|
| - DISALLOW_COPY_AND_ASSIGN(TypeName)
|
| -
|
| -// The arraysize(arr) macro returns the # of elements in an array arr.
|
| -// The expression is a compile-time constant, and therefore can be
|
| -// used in defining new arrays, for example. If you use arraysize on
|
| -// a pointer by mistake, you will get a compile-time error.
|
| -//
|
| -// One caveat is that arraysize() doesn't accept any array of an
|
| -// anonymous type or a type defined inside a function. In these rare
|
| -// cases, you have to use the unsafe ARRAYSIZE_UNSAFE() macro below. This is
|
| -// due to a limitation in C++'s template system. The limitation might
|
| -// eventually be removed, but it hasn't happened yet.
|
| -
|
| -// This template function declaration is used in defining arraysize.
|
| -// Note that the function doesn't need an implementation, as we only
|
| -// use its type.
|
| -template <typename T, size_t N>
|
| -char (&ArraySizeHelper(T (&array)[N]))[N];
|
| -
|
| -// That gcc wants both of these prototypes seems mysterious. VC, for
|
| -// its part, can't decide which to use (another mystery). Matching of
|
| -// template overloads: the final frontier.
|
| -#ifndef _MSC_VER
|
| -template <typename T, size_t N>
|
| -char (&ArraySizeHelper(const T (&array)[N]))[N];
|
| -#endif
|
| -
|
| -#define arraysize(array) (sizeof(ArraySizeHelper(array)))
|
| -
|
| -// ARRAYSIZE_UNSAFE performs essentially the same calculation as arraysize,
|
| -// but can be used on anonymous types or types defined inside
|
| -// functions. It's less safe than arraysize as it accepts some
|
| -// (although not all) pointers. Therefore, you should use arraysize
|
| -// whenever possible.
|
| -//
|
| -// The expression ARRAYSIZE_UNSAFE(a) is a compile-time constant of type
|
| -// size_t.
|
| -//
|
| -// ARRAYSIZE_UNSAFE catches a few type errors. If you see a compiler error
|
| -//
|
| -// "warning: division by zero in ..."
|
| -//
|
| -// when using ARRAYSIZE_UNSAFE, you are (wrongfully) giving it a pointer.
|
| -// You should only use ARRAYSIZE_UNSAFE on statically allocated arrays.
|
| -//
|
| -// The following comments are on the implementation details, and can
|
| -// be ignored by the users.
|
| -//
|
| -// ARRAYSIZE_UNSAFE(arr) works by inspecting sizeof(arr) (the # of bytes in
|
| -// the array) and sizeof(*(arr)) (the # of bytes in one array
|
| -// element). If the former is divisible by the latter, perhaps arr is
|
| -// indeed an array, in which case the division result is the # of
|
| -// elements in the array. Otherwise, arr cannot possibly be an array,
|
| -// and we generate a compiler error to prevent the code from
|
| -// compiling.
|
| -//
|
| -// Since the size of bool is implementation-defined, we need to cast
|
| -// !(sizeof(a) & sizeof(*(a))) to size_t in order to ensure the final
|
| -// result has type size_t.
|
| -//
|
| -// This macro is not perfect as it wrongfully accepts certain
|
| -// pointers, namely where the pointer size is divisible by the pointee
|
| -// size. Since all our code has to go through a 32-bit compiler,
|
| -// where a pointer is 4 bytes, this means all pointers to a type whose
|
| -// size is 3 or greater than 4 will be (righteously) rejected.
|
| -
|
| -#define ARRAYSIZE_UNSAFE(a) \
|
| - ((sizeof(a) / sizeof(*(a))) / \
|
| - static_cast<size_t>(!(sizeof(a) % sizeof(*(a)))))
|
| -
|
| -
|
| -// Use implicit_cast as a safe version of static_cast or const_cast
|
| -// for upcasting in the type hierarchy (i.e. casting a pointer to Foo
|
| -// to a pointer to SuperclassOfFoo or casting a pointer to Foo to
|
| -// a const pointer to Foo).
|
| -// When you use implicit_cast, the compiler checks that the cast is safe.
|
| -// Such explicit implicit_casts are necessary in surprisingly many
|
| -// situations where C++ demands an exact type match instead of an
|
| -// argument type convertable to a target type.
|
| -//
|
| -// The From type can be inferred, so the preferred syntax for using
|
| -// implicit_cast is the same as for static_cast etc.:
|
| -//
|
| -// implicit_cast<ToType>(expr)
|
| -//
|
| -// implicit_cast would have been part of the C++ standard library,
|
| -// but the proposal was submitted too late. It will probably make
|
| -// its way into the language in the future.
|
| -template<typename To, typename From>
|
| -inline To implicit_cast(From const &f) {
|
| - return f;
|
| -}
|
| -
|
| -
|
| -// When you upcast (that is, cast a pointer from type Foo to type
|
| -// SuperclassOfFoo), it's fine to use implicit_cast<>, since upcasts
|
| -// always succeed. When you downcast (that is, cast a pointer from
|
| -// type Foo to type SubclassOfFoo), static_cast<> isn't safe, because
|
| -// how do you know the pointer is really of type SubclassOfFoo? It
|
| -// could be a bare Foo, or of type DifferentSubclassOfFoo. Thus,
|
| -// when you downcast, you should use this macro. In debug mode, we
|
| -// use dynamic_cast<> to double-check the downcast is legal (we die
|
| -// if it's not). In normal mode, we do the efficient static_cast<>
|
| -// instead. Thus, it's important to test in debug mode to make sure
|
| -// the cast is legal!
|
| -// This is the only place in the code we should use dynamic_cast<>.
|
| -// In particular, you SHOULDN'T be using dynamic_cast<> in order to
|
| -// do RTTI (eg code like this:
|
| -// if (dynamic_cast<Subclass1>(foo)) HandleASubclass1Object(foo);
|
| -// if (dynamic_cast<Subclass2>(foo)) HandleASubclass2Object(foo);
|
| -// You should design the code some other way not to need this.
|
| -
|
| -template<typename To, typename From> // use like this: down_cast<T*>(foo);
|
| -inline To down_cast(From* f) { // so we only accept pointers
|
| - // Ensures that To is a sub-type of From *. This test is here only
|
| - // for compile-time type checking, and has no overhead in an
|
| - // optimized build at run-time, as it will be optimized away
|
| - // completely.
|
| - if (false) {
|
| - implicit_cast<From*, To>(0);
|
| - }
|
| -
|
| - assert(f == NULL || dynamic_cast<To>(f) != NULL); // RTTI: debug mode only!
|
| - return static_cast<To>(f);
|
| -}
|
| -
|
| -// The COMPILE_ASSERT macro can be used to verify that a compile time
|
| -// expression is true. For example, you could use it to verify the
|
| -// size of a static array:
|
| -//
|
| -// COMPILE_ASSERT(ARRAYSIZE_UNSAFE(content_type_names) == CONTENT_NUM_TYPES,
|
| -// content_type_names_incorrect_size);
|
| -//
|
| -// or to make sure a struct is smaller than a certain size:
|
| -//
|
| -// COMPILE_ASSERT(sizeof(foo) < 128, foo_too_large);
|
| -//
|
| -// The second argument to the macro is the name of the variable. If
|
| -// the expression is false, most compilers will issue a warning/error
|
| -// containing the name of the variable.
|
| -
|
| -template <bool>
|
| -struct CompileAssert {
|
| -};
|
| -
|
| -#undef COMPILE_ASSERT
|
| -#define COMPILE_ASSERT(expr, msg) \
|
| - typedef CompileAssert<(bool(expr))> msg[bool(expr) ? 1 : -1]
|
| -
|
| -// Implementation details of COMPILE_ASSERT:
|
| -//
|
| -// - COMPILE_ASSERT works by defining an array type that has -1
|
| -// elements (and thus is invalid) when the expression is false.
|
| -//
|
| -// - The simpler definition
|
| -//
|
| -// #define COMPILE_ASSERT(expr, msg) typedef char msg[(expr) ? 1 : -1]
|
| -//
|
| -// does not work, as gcc supports variable-length arrays whose sizes
|
| -// are determined at run-time (this is gcc's extension and not part
|
| -// of the C++ standard). As a result, gcc fails to reject the
|
| -// following code with the simple definition:
|
| -//
|
| -// int foo;
|
| -// COMPILE_ASSERT(foo, msg); // not supposed to compile as foo is
|
| -// // not a compile-time constant.
|
| -//
|
| -// - By using the type CompileAssert<(bool(expr))>, we ensures that
|
| -// expr is a compile-time constant. (Template arguments must be
|
| -// determined at compile-time.)
|
| -//
|
| -// - The outter parentheses in CompileAssert<(bool(expr))> are necessary
|
| -// to work around a bug in gcc 3.4.4 and 4.0.1. If we had written
|
| -//
|
| -// CompileAssert<bool(expr)>
|
| -//
|
| -// instead, these compilers will refuse to compile
|
| -//
|
| -// COMPILE_ASSERT(5 > 0, some_message);
|
| -//
|
| -// (They seem to think the ">" in "5 > 0" marks the end of the
|
| -// template argument list.)
|
| -//
|
| -// - The array size is (bool(expr) ? 1 : -1), instead of simply
|
| -//
|
| -// ((expr) ? 1 : -1).
|
| -//
|
| -// This is to avoid running into a bug in MS VC 7.1, which
|
| -// causes ((0.0) ? 1 : -1) to incorrectly evaluate to 1.
|
| -
|
| -
|
| -// MetatagId refers to metatag-id that we assign to
|
| -// each metatag <name, value> pair..
|
| -typedef uint32 MetatagId;
|
| -
|
| -// Argument type used in interfaces that can optionally take ownership
|
| -// of a passed in argument. If TAKE_OWNERSHIP is passed, the called
|
| -// object takes ownership of the argument. Otherwise it does not.
|
| -enum Ownership {
|
| - DO_NOT_TAKE_OWNERSHIP,
|
| - TAKE_OWNERSHIP
|
| -};
|
| -
|
| -// Use these as the mlock_bytes parameter to MLock and MLockGeneral
|
| -enum { MLOCK_ALL = -1, MLOCK_NONE = 0 };
|
| -
|
| -// Helper routine to avoid buggy code like the following:
|
| -// if (pos + N < end) ...
|
| -// If pos is large enough, "pos + N" may overflow. For example,
|
| -// pos==0xfffff000 and N==1MB.
|
| -//
|
| -// PointerRangeSize(a,b) returns the size of the range [a,b-1]
|
| -inline size_t PointerRangeSize(const char* start, const char* end) {
|
| - assert(start <= end);
|
| - return end - start;
|
| -}
|
| -
|
| -// bit_cast<Dest,Source> is a template function that implements the
|
| -// equivalent of "*reinterpret_cast<Dest*>(&source)". We need this in
|
| -// very low-level functions like the protobuf library and fast math
|
| -// support.
|
| -//
|
| -// float f = 3.14159265358979;
|
| -// int i = bit_cast<int32>(f);
|
| -// // i = 0x40490fdb
|
| -//
|
| -// The classical address-casting method is:
|
| -//
|
| -// // WRONG
|
| -// float f = 3.14159265358979; // WRONG
|
| -// int i = * reinterpret_cast<int*>(&f); // WRONG
|
| -//
|
| -// The address-casting method actually produces undefined behavior
|
| -// according to ISO C++ specification section 3.10 -15 -. Roughly, this
|
| -// section says: if an object in memory has one type, and a program
|
| -// accesses it with a different type, then the result is undefined
|
| -// behavior for most values of "different type".
|
| -//
|
| -// This is true for any cast syntax, either *(int*)&f or
|
| -// *reinterpret_cast<int*>(&f). And it is particularly true for
|
| -// conversions betweeen integral lvalues and floating-point lvalues.
|
| -//
|
| -// The purpose of 3.10 -15- is to allow optimizing compilers to assume
|
| -// that expressions with different types refer to different memory. gcc
|
| -// 4.0.1 has an optimizer that takes advantage of this. So a
|
| -// non-conforming program quietly produces wildly incorrect output.
|
| -//
|
| -// The problem is not the use of reinterpret_cast. The problem is type
|
| -// punning: holding an object in memory of one type and reading its bits
|
| -// back using a different type.
|
| -//
|
| -// The C++ standard is more subtle and complex than this, but that
|
| -// is the basic idea.
|
| -//
|
| -// Anyways ...
|
| -//
|
| -// bit_cast<> calls memcpy() which is blessed by the standard,
|
| -// especially by the example in section 3.9 . Also, of course,
|
| -// bit_cast<> wraps up the nasty logic in one place.
|
| -//
|
| -// Fortunately memcpy() is very fast. In optimized mode, with a
|
| -// constant size, gcc 2.95.3, gcc 4.0.1, and msvc 7.1 produce inline
|
| -// code with the minimal amount of data movement. On a 32-bit system,
|
| -// memcpy(d,s,4) compiles to one load and one store, and memcpy(d,s,8)
|
| -// compiles to two loads and two stores.
|
| -//
|
| -// I tested this code with gcc 2.95.3, gcc 4.0.1, icc 8.1, and msvc 7.1.
|
| -//
|
| -// WARNING: if Dest or Source is a non-POD type, the result of the memcpy
|
| -// is likely to surprise you.
|
| -
|
| -template <class Dest, class Source>
|
| -inline Dest bit_cast(const Source& source) {
|
| - // Compile time assertion: sizeof(Dest) == sizeof(Source)
|
| - // A compile error here means your Dest and Source have different sizes.
|
| - typedef char VerifySizesAreEqual [sizeof(Dest) == sizeof(Source) ? 1 : -1];
|
| -
|
| - Dest dest;
|
| - memcpy(&dest, &source, sizeof(dest));
|
| - return dest;
|
| -}
|
| -
|
| -// The following enum should be used only as a constructor argument to indicate
|
| -// that the variable has static storage class, and that the constructor should
|
| -// do nothing to its state. It indicates to the reader that it is legal to
|
| -// declare a static instance of the class, provided the constructor is given
|
| -// the base::LINKER_INITIALIZED argument. Normally, it is unsafe to declare a
|
| -// static variable that has a constructor or a destructor because invocation
|
| -// order is undefined. However, IF the type can be initialized by filling with
|
| -// zeroes (which the loader does for static variables), AND the destructor also
|
| -// does nothing to the storage, AND there are no virtual methods, then a
|
| -// constructor declared as
|
| -// explicit MyClass(base::LinkerInitialized x) {}
|
| -// and invoked as
|
| -// static MyClass my_variable_name(base::LINKER_INITIALIZED);
|
| -namespace base {
|
| -enum LinkerInitialized { LINKER_INITIALIZED };
|
| -} // base
|
| -
|
| -
|
| -#endif // BASE_BASICTYPES_H_
|
|
|