GCC Code Coverage Report


Directory: ./
File: openvdb_ax/openvdb_ax/codegen/String.h
Date: 2022-07-25 17:40:05
Exec Total Coverage
Lines: 35 35 100.0%
Functions: 5 5 100.0%
Branches: 324 765 42.4%

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1 // Copyright Contributors to the OpenVDB Project
2 // SPDX-License-Identifier: MPL-2.0
3
4 /// @file codegen/String.h
5 ///
6 /// @authors Nick Avramoussis
7 ///
8 /// @brief Provides the class definition for the equivalent IR representation
9 /// and logic for strings in AX.
10 ///
11
12 #ifndef OPENVDB_AX_CODEGEN_STRING_HAS_BEEN_INCLUDED
13 #define OPENVDB_AX_CODEGEN_STRING_HAS_BEEN_INCLUDED
14
15 #include <openvdb/version.h>
16 #include <openvdb/Types.h>
17
18 #include <cstring>
19 #include <cstdlib>
20 #include <cassert>
21
22 namespace openvdb {
23 OPENVDB_USE_VERSION_NAMESPACE
24 namespace OPENVDB_VERSION_NAME {
25
26 namespace ax {
27 namespace codegen {
28
29 /// @brief An extremely basic but native representation of a string class with
30 /// SSO support. This exists to provide an interface between the AX C++ API
31 /// and backend IR string logic. It is not designed to fulfill any other use
32 /// and should very rarely be used directly.
33 struct String
34 {
35 static constexpr int64_t SSO_LENGTH = 16; // Should never be less than 2
36 static_assert(SSO_LENGTH >= 2, "SSO should be greater than or equal to 2");
37
38 1397767 String() : String("", 0) {}
39 /// Construct from null terminated character string
40 31 String(const char* str) : String(str, std::strlen(str)) {}
41 49171 String(const std::string& str) : String(str.c_str(), str.size()) {}
42 1446998 String(const char* str, const int64_t size)
43 1446998 {
44
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1446998 assert(str != nullptr);
45 1446998 this->ptr = this->SSO; // for the isLocal check in alloc
46 this->reset(str, size);
47 1446998 }
48 1397775 ~String() { if (!this->isLocal()) std::free(ptr); }
49
50 3 String(const String& other) : String(other.ptr, other.len) {}
51
52 ///////////////////////////////////////////////////////////////////////////
53
54
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779 const std::string str() const { return std::string(this->ptr, this->len); }
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298 const char* c_str() const { return this->ptr; }
56
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146 int64_t size() const { return this->len; }
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89571505 bool isLocal() const { return this->ptr == this->SSO; }
58 void clear() { this->reset("", 0); }
59
60 // operators
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131131 inline operator const char*() const { return this->ptr; }
63
64 88124749 const String& operator=(const std::string& str)
65 {
66 this->reset(str.c_str(), str.size());
67 88124749 return *this;
68 }
69
70 7016965 const String& operator=(const String& other)
71 {
72 7016965 this->reset(other.ptr, other.len);
73 7016965 return *this;
74 }
75
76 bool operator==(const String& other) const
77 {
78
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6411699 return std::strcmp(this->ptr, other.ptr) == 0;
79 }
80
81 bool operator!=(const String& other) const
82 {
83 return !this->operator==(other);
84 }
85
86 3 String operator+(const String& other) const
87 {
88 String s;
89 3 s.alloc(this->size() + other.size());
90 3 std::memcpy(s.ptr, this->c_str(), this->size());
91 3 std::memcpy(s.ptr + this->size(), other.c_str(), other.size());
92 3 return s;
93 }
94
95 ///////////////////////////////////////////////////////////////////////////
96 ///////////////////////////////////////////////////////////////////////////
97
98 // Internal methods and members. These should never be used directly, but
99 // remain public for C bindings in StringFunction (allowing for behaviour
100 // coupling with the IR implementations).
101
102 inline void reset(const char* str, const int64_t size)
103 {
104 96588712 this->alloc(size);
105 96588712 std::memcpy(this->ptr, str, size);
106 }
107
108 96595083 inline void alloc(const size_t size)
109 {
110
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96595083 if (!this->isLocal()) std::free(this->ptr);
111
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96595083 if (size > SSO_LENGTH-1) this->ptr = static_cast<char*>(std::malloc(size + 1));
112 96595069 else this->ptr = this->SSO;
113 96595083 this->ptr[size] = '\0';
114 96595083 this->len = size;
115 96595083 }
116
117 char* ptr = nullptr;
118 char SSO[SSO_LENGTH];
119 int64_t len = 0;
120 };
121
122 } // namespace codegen
123 } // namespace ax
124
125 template<> inline ax::codegen::String zeroVal<ax::codegen::String>() { return ""; }
126
127 } // namespace OPENVDB_VERSION_NAME
128 } // namespace openvdb
129
130 #endif // OPENVDB_AX_CODEGEN_STRING_HAS_BEEN_INCLUDED
131
132