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 |
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-// 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_ |