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1 // Copyright 2014 the V8 project authors. All rights reserved. | 1 // Copyright 2014 the V8 project 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 #include "src/ostreams.h" | 5 #include "src/ostreams.h" |
6 | 6 |
7 #include <algorithm> | |
8 #include <cmath> | |
9 | |
10 #include "src/base/platform/platform.h" // For isinf/isnan with MSVC | |
11 | |
12 #if V8_OS_WIN | 7 #if V8_OS_WIN |
13 #define snprintf sprintf_s | 8 #define snprintf sprintf_s |
14 #endif | 9 #endif |
15 | 10 |
16 namespace v8 { | 11 namespace v8 { |
17 namespace internal { | 12 namespace internal { |
18 | 13 |
19 // Be lazy and delegate the value=>char conversion to snprintf. | 14 OFStreamBase::OFStreamBase(FILE* f) : f_(f) {} |
20 template<class T> | 15 |
21 OStream& OStream::print(const char* format, T x) { | 16 |
22 char buf[32]; | 17 OFStreamBase::~OFStreamBase() {} |
23 int n = snprintf(buf, sizeof(buf), format, x); | 18 |
24 return (n < 0) ? *this : write(buf, n); | 19 |
| 20 OFStreamBase::int_type OFStreamBase::sync() { return 0; } |
| 21 |
| 22 |
| 23 OFStreamBase::int_type OFStreamBase::overflow(int_type c) { |
| 24 return (c != EOF) ? std::fputc(c, f_) : c; |
25 } | 25 } |
26 | 26 |
27 | 27 |
28 OStream& OStream::operator<<(short x) { // NOLINT(runtime/int) | 28 OFStream::OFStream(FILE* f) : OFStreamBase(f), std::ostream(this) {} |
29 return print(hex_ ? "%hx" : "%hd", x); | |
30 } | |
31 | 29 |
32 | 30 |
33 OStream& OStream::operator<<(unsigned short x) { // NOLINT(runtime/int) | 31 OFStream::~OFStream() {} |
34 return print(hex_ ? "%hx" : "%hu", x); | |
35 } | |
36 | 32 |
37 | 33 |
38 OStream& OStream::operator<<(int x) { | 34 namespace { |
39 return print(hex_ ? "%x" : "%d", x); | 35 |
40 } | 36 // Locale-independent predicates. |
| 37 bool IsPrint(uint16_t c) { return 0x20 <= c && c <= 0x7e; } |
| 38 bool IsSpace(uint16_t c) { return (0x9 <= c && c <= 0xd) || c == 0x20; } |
| 39 bool IsOK(uint16_t c) { return (IsPrint(c) || IsSpace(c)) && c != '\\'; } |
41 | 40 |
42 | 41 |
43 OStream& OStream::operator<<(unsigned int x) { | 42 std::ostream& PrintUC16(std::ostream& os, uint16_t c, bool (*pred)(uint16_t)) { |
44 return print(hex_ ? "%x" : "%u", x); | |
45 } | |
46 | |
47 | |
48 OStream& OStream::operator<<(long x) { // NOLINT(runtime/int) | |
49 return print(hex_ ? "%lx" : "%ld", x); | |
50 } | |
51 | |
52 | |
53 OStream& OStream::operator<<(unsigned long x) { // NOLINT(runtime/int) | |
54 return print(hex_ ? "%lx" : "%lu", x); | |
55 } | |
56 | |
57 | |
58 OStream& OStream::operator<<(long long x) { // NOLINT(runtime/int) | |
59 return print(hex_ ? "%llx" : "%lld", x); | |
60 } | |
61 | |
62 | |
63 OStream& OStream::operator<<(unsigned long long x) { // NOLINT(runtime/int) | |
64 return print(hex_ ? "%llx" : "%llu", x); | |
65 } | |
66 | |
67 | |
68 OStream& OStream::operator<<(double x) { | |
69 if (std::isinf(x)) return *this << (x < 0 ? "-inf" : "inf"); | |
70 if (std::isnan(x)) return *this << "nan"; | |
71 return print("%g", x); | |
72 } | |
73 | |
74 | |
75 OStream& OStream::operator<<(void* x) { | |
76 return print("%p", x); | |
77 } | |
78 | |
79 | |
80 OStream& OStream::operator<<(char x) { | |
81 return put(x); | |
82 } | |
83 | |
84 | |
85 OStream& OStream::operator<<(signed char x) { | |
86 return put(x); | |
87 } | |
88 | |
89 | |
90 OStream& OStream::operator<<(unsigned char x) { | |
91 return put(x); | |
92 } | |
93 | |
94 | |
95 OStream& OStream::dec() { | |
96 hex_ = false; | |
97 return *this; | |
98 } | |
99 | |
100 | |
101 OStream& OStream::hex() { | |
102 hex_ = true; | |
103 return *this; | |
104 } | |
105 | |
106 | |
107 OStream& flush(OStream& os) { // NOLINT(runtime/references) | |
108 return os.flush(); | |
109 } | |
110 | |
111 | |
112 OStream& endl(OStream& os) { // NOLINT(runtime/references) | |
113 return flush(os.put('\n')); | |
114 } | |
115 | |
116 | |
117 OStream& hex(OStream& os) { // NOLINT(runtime/references) | |
118 return os.hex(); | |
119 } | |
120 | |
121 | |
122 OStream& dec(OStream& os) { // NOLINT(runtime/references) | |
123 return os.dec(); | |
124 } | |
125 | |
126 | |
127 OStringStream& OStringStream::write(const char* s, size_t n) { | |
128 size_t new_size = size_ + n; | |
129 if (new_size < size_) return *this; // Overflow => no-op. | |
130 reserve(new_size + 1); | |
131 memcpy(data_ + size_, s, n); | |
132 size_ = new_size; | |
133 data_[size_] = '\0'; | |
134 return *this; | |
135 } | |
136 | |
137 | |
138 OStringStream& OStringStream::flush() { | |
139 return *this; | |
140 } | |
141 | |
142 | |
143 void OStringStream::reserve(size_t requested_capacity) { | |
144 if (requested_capacity <= capacity_) return; | |
145 size_t new_capacity = // Handle possible overflow by not doubling. | |
146 std::max(std::max(capacity_ * 2, capacity_), requested_capacity); | |
147 char * new_data = allocate(new_capacity); | |
148 memcpy(new_data, data_, size_); | |
149 deallocate(data_, capacity_); | |
150 capacity_ = new_capacity; | |
151 data_ = new_data; | |
152 } | |
153 | |
154 | |
155 OFStream& OFStream::write(const char* s, size_t n) { | |
156 if (f_) fwrite(s, n, 1, f_); | |
157 return *this; | |
158 } | |
159 | |
160 | |
161 OFStream& OFStream::flush() { | |
162 if (f_) fflush(f_); | |
163 return *this; | |
164 } | |
165 | |
166 | |
167 // Locale-independent predicates. | |
168 static bool IsPrint(uint16_t c) { return 0x20 <= c && c <= 0x7e; } | |
169 static bool IsSpace(uint16_t c) { return (0x9 <= c && c <= 0xd) || c == 0x20; } | |
170 static bool IsOK(uint16_t c) { return (IsPrint(c) || IsSpace(c)) && c != '\\'; } | |
171 | |
172 | |
173 static OStream& PrintUC16(OStream& os, uint16_t c, bool (*pred)(uint16_t)) { | |
174 char buf[10]; | 43 char buf[10]; |
175 const char* format = pred(c) ? "%c" : (c <= 0xff) ? "\\x%02x" : "\\u%04x"; | 44 const char* format = pred(c) ? "%c" : (c <= 0xff) ? "\\x%02x" : "\\u%04x"; |
176 snprintf(buf, sizeof(buf), format, c); | 45 snprintf(buf, sizeof(buf), format, c); |
177 return os << buf; | 46 return os << buf; |
178 } | 47 } |
179 | 48 |
| 49 } // namespace |
180 | 50 |
181 OStream& operator<<(OStream& os, const AsReversiblyEscapedUC16& c) { | 51 |
| 52 std::ostream& operator<<(std::ostream& os, const AsReversiblyEscapedUC16& c) { |
182 return PrintUC16(os, c.value, IsOK); | 53 return PrintUC16(os, c.value, IsOK); |
183 } | 54 } |
184 | 55 |
185 | 56 |
186 OStream& operator<<(OStream& os, const AsUC16& c) { | 57 std::ostream& operator<<(std::ostream& os, const AsUC16& c) { |
187 return PrintUC16(os, c.value, IsPrint); | 58 return PrintUC16(os, c.value, IsPrint); |
188 } | 59 } |
189 } } // namespace v8::internal | 60 |
| 61 } // namespace internal |
| 62 } // namespace v8 |
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