OLD | NEW |
---|---|
1 // Copyright 2011 the V8 project authors. All rights reserved. | 1 // Copyright 2011 the V8 project authors. All rights reserved. |
2 // Redistribution and use in source and binary forms, with or without | 2 // Redistribution and use in source and binary forms, with or without |
3 // modification, are permitted provided that the following conditions are | 3 // modification, are permitted provided that the following conditions are |
4 // met: | 4 // met: |
5 // | 5 // |
6 // * Redistributions of source code must retain the above copyright | 6 // * Redistributions of source code must retain the above copyright |
7 // notice, this list of conditions and the following disclaimer. | 7 // notice, this list of conditions and the following disclaimer. |
8 // * Redistributions in binary form must reproduce the above | 8 // * Redistributions in binary form must reproduce the above |
9 // copyright notice, this list of conditions and the following | 9 // copyright notice, this list of conditions and the following |
10 // disclaimer in the documentation and/or other materials provided | 10 // disclaimer in the documentation and/or other materials provided |
(...skipping 12 matching lines...) Expand all Loading... | |
23 // DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY | 23 // DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY |
24 // THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT | 24 // THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT |
25 // (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE | 25 // (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE |
26 // OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. | 26 // OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
27 | 27 |
28 #ifndef V8_UTILS_H_ | 28 #ifndef V8_UTILS_H_ |
29 #define V8_UTILS_H_ | 29 #define V8_UTILS_H_ |
30 | 30 |
31 #include <stdlib.h> | 31 #include <stdlib.h> |
32 #include <string.h> | 32 #include <string.h> |
33 #include <climits> | |
Vitaly Repeshko
2011/07/21 12:56:18
We include old school standard library headers wit
Sven Panne
2011/07/21 13:07:13
That's not completely true, cstdio and cstdarg are
| |
33 | 34 |
34 #include "globals.h" | 35 #include "globals.h" |
35 #include "checks.h" | 36 #include "checks.h" |
36 #include "allocation.h" | 37 #include "allocation.h" |
37 | 38 |
38 namespace v8 { | 39 namespace v8 { |
39 namespace internal { | 40 namespace internal { |
40 | 41 |
41 // ---------------------------------------------------------------------------- | 42 // ---------------------------------------------------------------------------- |
42 // General helper functions | 43 // General helper functions |
(...skipping 835 matching lines...) Expand 10 before | Expand all | Expand 10 after Loading... | |
878 | 879 |
879 protected: | 880 protected: |
880 Vector<char> buffer_; | 881 Vector<char> buffer_; |
881 int position_; | 882 int position_; |
882 | 883 |
883 bool is_finalized() const { return position_ < 0; } | 884 bool is_finalized() const { return position_ < 0; } |
884 private: | 885 private: |
885 DISALLOW_IMPLICIT_CONSTRUCTORS(SimpleStringBuilder); | 886 DISALLOW_IMPLICIT_CONSTRUCTORS(SimpleStringBuilder); |
886 }; | 887 }; |
887 | 888 |
889 | |
890 // A poor man's version of STL's bitset: A bit set of enums E (without explicit | |
891 // values), fitting into an integral type T. | |
892 template <class E, class T = int> | |
893 class EnumSet { | |
894 public: | |
895 explicit EnumSet(T bits = 0) : bits_(bits) {} | |
896 bool IsEmpty() const { return bits_ == 0; } | |
897 bool Contains(E element) const { return (bits_ & Mask(element)) != 0; } | |
898 void Add(E element) { bits_ |= Mask(element); } | |
899 void Remove(E element) { bits_ &= ~Mask(element); } | |
900 T ToIntegral() const { return bits_; } | |
901 | |
902 private: | |
903 T Mask(E element) const { | |
904 // The strange typing in ASSERT is necessary to avoid stupid warnings, see: | |
905 // http://gcc.gnu.org/bugzilla/show_bug.cgi?id=43680 | |
906 ASSERT(element < static_cast<int>(sizeof(T) * CHAR_BIT)); | |
907 return 1 << element; | |
908 } | |
909 | |
910 T bits_; | |
911 }; | |
912 | |
888 } } // namespace v8::internal | 913 } } // namespace v8::internal |
889 | 914 |
890 #endif // V8_UTILS_H_ | 915 #endif // V8_UTILS_H_ |
OLD | NEW |