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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 #ifndef V8_STRING_STREAM_H_ | 5 #ifndef V8_STRING_STREAM_H_ |
6 #define V8_STRING_STREAM_H_ | 6 #define V8_STRING_STREAM_H_ |
7 | 7 |
8 #include "src/handles.h" | 8 #include "src/handles.h" |
9 | 9 |
10 namespace v8 { | 10 namespace v8 { |
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28 public: | 28 public: |
29 ~HeapStringAllocator() { DeleteArray(space_); } | 29 ~HeapStringAllocator() { DeleteArray(space_); } |
30 char* allocate(unsigned bytes) override; | 30 char* allocate(unsigned bytes) override; |
31 char* grow(unsigned* bytes) override; | 31 char* grow(unsigned* bytes) override; |
32 | 32 |
33 private: | 33 private: |
34 char* space_; | 34 char* space_; |
35 }; | 35 }; |
36 | 36 |
37 | 37 |
| 38 class FixedStringAllocator final : public StringAllocator { |
| 39 public: |
| 40 FixedStringAllocator(char* buffer, unsigned length) |
| 41 : buffer_(buffer), length_(length) {} |
| 42 ~FixedStringAllocator() override{}; |
| 43 char* allocate(unsigned bytes) override; |
| 44 char* grow(unsigned* bytes) override; |
| 45 |
| 46 private: |
| 47 char* buffer_; |
| 48 unsigned length_; |
| 49 DISALLOW_COPY_AND_ASSIGN(FixedStringAllocator); |
| 50 }; |
| 51 |
| 52 |
38 class FmtElm final { | 53 class FmtElm final { |
39 public: | 54 public: |
40 FmtElm(int value) : type_(INT) { // NOLINT | 55 FmtElm(int value) : type_(INT) { // NOLINT |
41 data_.u_int_ = value; | 56 data_.u_int_ = value; |
42 } | 57 } |
43 explicit FmtElm(double value) : type_(DOUBLE) { | 58 explicit FmtElm(double value) : type_(DOUBLE) { |
44 data_.u_double_ = value; | 59 data_.u_double_ = value; |
45 } | 60 } |
46 FmtElm(const char* value) : type_(C_STR) { // NOLINT | 61 FmtElm(const char* value) : type_(C_STR) { // NOLINT |
47 data_.u_c_str_ = value; | 62 data_.u_c_str_ = value; |
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70 const Vector<const uc16>* u_lc_str_; | 85 const Vector<const uc16>* u_lc_str_; |
71 Object* u_obj_; | 86 Object* u_obj_; |
72 Object** u_handle_; | 87 Object** u_handle_; |
73 void* u_pointer_; | 88 void* u_pointer_; |
74 } data_; | 89 } data_; |
75 }; | 90 }; |
76 | 91 |
77 | 92 |
78 class StringStream final { | 93 class StringStream final { |
79 public: | 94 public: |
80 explicit StringStream(StringAllocator* allocator): | 95 enum ObjectPrintMode { kPrintObjectConcise, kPrintObjectVerbose }; |
81 allocator_(allocator), | 96 StringStream(StringAllocator* allocator, |
82 capacity_(kInitialCapacity), | 97 ObjectPrintMode object_print_mode = kPrintObjectConcise) |
83 length_(0), | 98 : allocator_(allocator), |
84 buffer_(allocator_->allocate(kInitialCapacity)) { | 99 object_print_mode_(object_print_mode), |
| 100 capacity_(kInitialCapacity), |
| 101 length_(0), |
| 102 buffer_(allocator_->allocate(kInitialCapacity)) { |
85 buffer_[0] = 0; | 103 buffer_[0] = 0; |
86 } | 104 } |
87 | 105 |
88 bool Put(char c); | 106 bool Put(char c); |
89 bool Put(String* str); | 107 bool Put(String* str); |
90 bool Put(String* str, int start, int end); | 108 bool Put(String* str, int start, int end); |
91 void Add(Vector<const char> format, Vector<FmtElm> elms); | 109 void Add(Vector<const char> format, Vector<FmtElm> elms); |
92 void Add(const char* format); | 110 void Add(const char* format); |
93 void Add(Vector<const char> format); | 111 void Add(Vector<const char> format); |
94 void Add(const char* format, FmtElm arg0); | 112 void Add(const char* format, FmtElm arg0); |
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127 // Reset the stream. | 145 // Reset the stream. |
128 void Reset() { | 146 void Reset() { |
129 length_ = 0; | 147 length_ = 0; |
130 buffer_[0] = 0; | 148 buffer_[0] = 0; |
131 } | 149 } |
132 | 150 |
133 // Mentioned object cache support. | 151 // Mentioned object cache support. |
134 void PrintMentionedObjectCache(Isolate* isolate); | 152 void PrintMentionedObjectCache(Isolate* isolate); |
135 static void ClearMentionedObjectCache(Isolate* isolate); | 153 static void ClearMentionedObjectCache(Isolate* isolate); |
136 #ifdef DEBUG | 154 #ifdef DEBUG |
137 static bool IsMentionedObjectCacheClear(Isolate* isolate); | 155 bool IsMentionedObjectCacheClear(Isolate* isolate); |
138 #endif | 156 #endif |
139 | 157 |
140 static const int kInitialCapacity = 16; | 158 static const int kInitialCapacity = 16; |
141 | 159 |
142 private: | 160 private: |
143 void PrintObject(Object* obj); | 161 void PrintObject(Object* obj); |
144 | 162 |
145 StringAllocator* allocator_; | 163 StringAllocator* allocator_; |
| 164 ObjectPrintMode object_print_mode_; |
146 unsigned capacity_; | 165 unsigned capacity_; |
147 unsigned length_; // does not include terminating 0-character | 166 unsigned length_; // does not include terminating 0-character |
148 char* buffer_; | 167 char* buffer_; |
149 | 168 |
150 bool full() const { return (capacity_ - length_) == 1; } | 169 bool full() const { return (capacity_ - length_) == 1; } |
151 int space() const { return capacity_ - length_; } | 170 int space() const { return capacity_ - length_; } |
152 | 171 |
153 DISALLOW_IMPLICIT_CONSTRUCTORS(StringStream); | 172 DISALLOW_IMPLICIT_CONSTRUCTORS(StringStream); |
154 }; | 173 }; |
155 | 174 |
156 } } // namespace v8::internal | 175 } } // namespace v8::internal |
157 | 176 |
158 #endif // V8_STRING_STREAM_H_ | 177 #endif // V8_STRING_STREAM_H_ |
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