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Side by Side Diff: runtime/vm/unicode.h

Issue 2481873005: clang-format runtime/vm (Closed)
Patch Set: Merge Created 4 years, 1 month ago
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1 // Copyright (c) 2012, the Dart project authors. Please see the AUTHORS file 1 // Copyright (c) 2012, the Dart project authors. Please see the AUTHORS file
2 // for details. All rights reserved. Use of this source code is governed by a 2 // for details. All rights reserved. Use of this source code is governed by a
3 // BSD-style license that can be found in the LICENSE file. 3 // BSD-style license that can be found in the LICENSE file.
4 4
5 #ifndef RUNTIME_VM_UNICODE_H_ 5 #ifndef RUNTIME_VM_UNICODE_H_
6 #define RUNTIME_VM_UNICODE_H_ 6 #define RUNTIME_VM_UNICODE_H_
7 7
8 #include "vm/allocation.h" 8 #include "vm/allocation.h"
9 #include "vm/globals.h" 9 #include "vm/globals.h"
10 10
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31 // Returns true if the code point value is above Plane 17. 31 // Returns true if the code point value is above Plane 17.
32 static bool IsOutOfRange(intptr_t code_point) { 32 static bool IsOutOfRange(intptr_t code_point) {
33 return (code_point < 0) || (code_point > kMaxCodePoint); 33 return (code_point < 0) || (code_point > kMaxCodePoint);
34 } 34 }
35 }; 35 };
36 36
37 37
38 class Utf8 : AllStatic { 38 class Utf8 : AllStatic {
39 public: 39 public:
40 enum Type { 40 enum Type {
41 kLatin1 = 0, // Latin-1 code point [U+0000, U+00FF]. 41 kLatin1 = 0, // Latin-1 code point [U+0000, U+00FF].
42 kBMP, // Basic Multilingual Plane code point [U+0000, U+FFFF]. 42 kBMP, // Basic Multilingual Plane code point [U+0000, U+FFFF].
43 kSupplementary, // Supplementary code point [U+010000, U+10FFFF]. 43 kSupplementary, // Supplementary code point [U+010000, U+10FFFF].
44 }; 44 };
45 45
46 // Returns the most restricted coding form in which the sequence of utf8 46 // Returns the most restricted coding form in which the sequence of utf8
47 // characters in 'utf8_array' can be represented in, and the number of 47 // characters in 'utf8_array' can be represented in, and the number of
48 // code units needed in that form. 48 // code units needed in that form.
49 static intptr_t CodeUnitCount(const uint8_t* utf8_array, 49 static intptr_t CodeUnitCount(const uint8_t* utf8_array,
50 intptr_t array_len, 50 intptr_t array_len,
51 Type* type); 51 Type* type);
52 52
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68 uint8_t* dst, 68 uint8_t* dst,
69 intptr_t len); 69 intptr_t len);
70 static bool DecodeToUTF16(const uint8_t* utf8_array, 70 static bool DecodeToUTF16(const uint8_t* utf8_array,
71 intptr_t array_len, 71 intptr_t array_len,
72 uint16_t* dst, 72 uint16_t* dst,
73 intptr_t len); 73 intptr_t len);
74 static bool DecodeToUTF32(const uint8_t* utf8_array, 74 static bool DecodeToUTF32(const uint8_t* utf8_array,
75 intptr_t array_len, 75 intptr_t array_len,
76 int32_t* dst, 76 int32_t* dst,
77 intptr_t len); 77 intptr_t len);
78 static bool DecodeCStringToUTF32(const char* str, 78 static bool DecodeCStringToUTF32(const char* str, int32_t* dst, intptr_t len);
79 int32_t* dst,
80 intptr_t len);
81 79
82 static const int32_t kMaxOneByteChar = 0x7F; 80 static const int32_t kMaxOneByteChar = 0x7F;
83 static const int32_t kMaxTwoByteChar = 0x7FF; 81 static const int32_t kMaxTwoByteChar = 0x7FF;
84 static const int32_t kMaxThreeByteChar = 0xFFFF; 82 static const int32_t kMaxThreeByteChar = 0xFFFF;
85 static const int32_t kMaxFourByteChar = Utf::kMaxCodePoint; 83 static const int32_t kMaxFourByteChar = Utf::kMaxCodePoint;
86 84
87 private: 85 private:
88 static bool IsTrailByte(uint8_t code_unit) { 86 static bool IsTrailByte(uint8_t code_unit) {
89 return (code_unit & 0xC0) == 0x80; 87 return (code_unit & 0xC0) == 0x80;
90 } 88 }
91 89
92 static bool IsNonShortestForm(uint32_t code_point, size_t num_code_units) { 90 static bool IsNonShortestForm(uint32_t code_point, size_t num_code_units) {
93 return code_point < kOverlongMinimum[num_code_units]; 91 return code_point < kOverlongMinimum[num_code_units];
94 } 92 }
95 93
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110 108
111 109
112 class Utf16 : AllStatic { 110 class Utf16 : AllStatic {
113 public: 111 public:
114 // Returns the length of the code point in UTF-16 code units. 112 // Returns the length of the code point in UTF-16 code units.
115 static intptr_t Length(int32_t ch) { 113 static intptr_t Length(int32_t ch) {
116 return (ch <= Utf16::kMaxCodeUnit) ? 1 : 2; 114 return (ch <= Utf16::kMaxCodeUnit) ? 1 : 2;
117 } 115 }
118 116
119 // Returns true if ch is a lead or trail surrogate. 117 // Returns true if ch is a lead or trail surrogate.
120 static bool IsSurrogate(uint32_t ch) { 118 static bool IsSurrogate(uint32_t ch) { return (ch & 0xFFFFF800) == 0xD800; }
121 return (ch & 0xFFFFF800) == 0xD800;
122 }
123 119
124 // Returns true if ch is a lead surrogate. 120 // Returns true if ch is a lead surrogate.
125 static bool IsLeadSurrogate(uint32_t ch) { 121 static bool IsLeadSurrogate(uint32_t ch) {
126 return (ch & 0xFFFFFC00) == 0xD800; 122 return (ch & 0xFFFFFC00) == 0xD800;
127 } 123 }
128 124
129 // Returns true if ch is a low surrogate. 125 // Returns true if ch is a low surrogate.
130 static bool IsTrailSurrogate(uint32_t ch) { 126 static bool IsTrailSurrogate(uint32_t ch) {
131 return (ch & 0xFFFFFC00) == 0xDC00; 127 return (ch & 0xFFFFFC00) == 0xDC00;
132 } 128 }
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222 // Data for small code points with one mapping 218 // Data for small code points with one mapping
223 static const int16_t stage2_[]; 219 static const int16_t stage2_[];
224 220
225 // Data for large code points or code points with both mappings. 221 // Data for large code points or code points with both mappings.
226 static const int32_t stage2_exception_[][2]; 222 static const int32_t stage2_exception_[][2];
227 }; 223 };
228 224
229 } // namespace dart 225 } // namespace dart
230 226
231 #endif // RUNTIME_VM_UNICODE_H_ 227 #endif // RUNTIME_VM_UNICODE_H_
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