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1 // Copyright (c) 2010 The Chromium Authors. All rights reserved. | 1 // Copyright (c) 2010 The Chromium Authors. All rights reserved. |
2 // Use of this source code is governed by a BSD-style license that can be | 2 // Use of this source code is governed by a BSD-style license that can be |
3 // found in the LICENSE file. | 3 // found in the LICENSE file. |
4 | 4 |
5 #ifndef BASE_BASICTYPES_H_ | 5 #ifndef BASE_BASICTYPES_H_ |
6 #define BASE_BASICTYPES_H_ | 6 #define BASE_BASICTYPES_H_ |
7 #pragma once | 7 #pragma once |
8 | 8 |
9 #include <limits.h> // So we can set the bounds of our types | 9 #include <limits.h> // So we can set the bounds of our types |
10 #include <stddef.h> // For size_t | 10 #include <stddef.h> // For size_t |
11 #include <string.h> // for memcpy | 11 #include <string.h> // for memcpy |
12 | 12 |
13 #include "base/port.h" // Types that only need exist on certain systems | 13 #include "base/port.h" // Types that only need exist on certain systems |
14 | 14 |
15 #ifndef COMPILER_MSVC | 15 #ifndef COMPILER_MSVC |
16 // stdint.h is part of C99 but MSVC doesn't have it. | 16 // stdint.h is part of C99 but MSVC doesn't have it. |
17 #include <stdint.h> // For intptr_t. | 17 #include <stdint.h> // For intptr_t. |
18 #endif | 18 #endif |
19 | 19 |
20 typedef signed char schar; | 20 typedef signed char schar; |
21 typedef signed char int8; | 21 typedef signed char int8; |
22 typedef short int16; | 22 typedef short int16; |
23 // TODO: Remove these type guards. These are to avoid conflicts with | 23 // TODO: Remove these type guards. These are to avoid conflicts with |
24 // obsolete/protypes.h in the Gecko SDK. | 24 // obsolete/protypes.h in the Gecko SDK. |
25 #ifndef _INT32 | 25 #ifndef _INT32 |
26 #define _INT32 | 26 #define _INT32 |
27 typedef int int32; | 27 typedef int int32; |
28 #endif | 28 #endif |
29 | 29 |
30 // The NSPR system headers define 64-bit as |long| when possible. In order to | 30 // The NSPR system headers define 64-bit as |long| when possible, except on |
31 // not have typedef mismatches, we do the same on LP64. | 31 // Mac OS X. In order to not have typedef mismatches, we do the same on LP64. |
32 #if __LP64__ | 32 // |
33 // On Mac OS X, |long long| is used for 64-bit types for compatibility with | |
34 // <inttypes.h> format macros even in the LP64 model. | |
35 #if __LP64__ && !defined(OS_MACOSX) | |
wtc
2011/03/22 23:46:33
Nit: it's better to test
defined(__LP64__)
ins
| |
33 typedef long int64; | 36 typedef long int64; |
34 #else | 37 #else |
35 typedef long long int64; | 38 typedef long long int64; |
36 #endif | 39 #endif |
37 | 40 |
38 // NOTE: unsigned types are DANGEROUS in loops and other arithmetical | 41 // NOTE: unsigned types are DANGEROUS in loops and other arithmetical |
39 // places. Use the signed types unless your variable represents a bit | 42 // places. Use the signed types unless your variable represents a bit |
40 // pattern (eg a hash value) or you really need the extra bit. Do NOT | 43 // pattern (eg a hash value) or you really need the extra bit. Do NOT |
41 // use 'unsigned' to express "this value should always be positive"; | 44 // use 'unsigned' to express "this value should always be positive"; |
42 // use assertions for this. | 45 // use assertions for this. |
43 | 46 |
44 typedef unsigned char uint8; | 47 typedef unsigned char uint8; |
45 typedef unsigned short uint16; | 48 typedef unsigned short uint16; |
46 // TODO: Remove these type guards. These are to avoid conflicts with | 49 // TODO: Remove these type guards. These are to avoid conflicts with |
47 // obsolete/protypes.h in the Gecko SDK. | 50 // obsolete/protypes.h in the Gecko SDK. |
48 #ifndef _UINT32 | 51 #ifndef _UINT32 |
49 #define _UINT32 | 52 #define _UINT32 |
50 typedef unsigned int uint32; | 53 typedef unsigned int uint32; |
51 #endif | 54 #endif |
52 | 55 |
53 // See the comment above about NSPR and 64-bit. | 56 // See the comment above about NSPR and 64-bit. |
54 #if __LP64__ | 57 #if __LP64__ && !defined(OS_MACOSX) |
55 typedef unsigned long uint64; | 58 typedef unsigned long uint64; |
56 #else | 59 #else |
57 typedef unsigned long long uint64; | 60 typedef unsigned long long uint64; |
58 #endif | 61 #endif |
59 | 62 |
60 // A type to represent a Unicode code-point value. As of Unicode 4.0, | 63 // A type to represent a Unicode code-point value. As of Unicode 4.0, |
61 // such values require up to 21 bits. | 64 // such values require up to 21 bits. |
62 // (For type-checking on pointers, make this explicitly signed, | 65 // (For type-checking on pointers, make this explicitly signed, |
63 // and it should always be the signed version of whatever int32 is.) | 66 // and it should always be the signed version of whatever int32 is.) |
64 typedef signed int char32; | 67 typedef signed int char32; |
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355 // does nothing to the storage, AND there are no virtual methods, then a | 358 // does nothing to the storage, AND there are no virtual methods, then a |
356 // constructor declared as | 359 // constructor declared as |
357 // explicit MyClass(base::LinkerInitialized x) {} | 360 // explicit MyClass(base::LinkerInitialized x) {} |
358 // and invoked as | 361 // and invoked as |
359 // static MyClass my_variable_name(base::LINKER_INITIALIZED); | 362 // static MyClass my_variable_name(base::LINKER_INITIALIZED); |
360 namespace base { | 363 namespace base { |
361 enum LinkerInitialized { LINKER_INITIALIZED }; | 364 enum LinkerInitialized { LINKER_INITIALIZED }; |
362 } // base | 365 } // base |
363 | 366 |
364 #endif // BASE_BASICTYPES_H_ | 367 #endif // BASE_BASICTYPES_H_ |
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