/[pcre]/code/tags/pcre-7.3/pcrecpparg.h.in
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Contents of /code/tags/pcre-7.3/pcrecpparg.h.in

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Revision 93 - (show annotations) (download)
Sat Feb 24 21:41:42 2007 UTC (7 years, 5 months ago) by nigel
Original Path: code/trunk/pcrecpparg.h.in
File size: 6794 byte(s)
Load pcre-7.0 into code/trunk.

1 // Copyright (c) 2005, Google Inc.
2 // All rights reserved.
3 //
4 // Redistribution and use in source and binary forms, with or without
5 // modification, are permitted provided that the following conditions are
6 // met:
7 //
8 // * Redistributions of source code must retain the above copyright
9 // notice, this list of conditions and the following disclaimer.
10 // * Redistributions in binary form must reproduce the above
11 // copyright notice, this list of conditions and the following disclaimer
12 // in the documentation and/or other materials provided with the
13 // distribution.
14 // * Neither the name of Google Inc. nor the names of its
15 // contributors may be used to endorse or promote products derived from
16 // this software without specific prior written permission.
17 //
18 // THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
19 // "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
20 // LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
21 // A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
22 // OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
23 // SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
24 // LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
25 // DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
26 // THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
27 // (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
28 // OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
29 //
30 // Author: Sanjay Ghemawat
31
32 #ifndef _PCRECPPARG_H
33 #define _PCRECPPARG_H
34
35 #include <stdlib.h> // for NULL
36 #include <string>
37
38 namespace pcrecpp {
39
40 class StringPiece;
41
42 // Hex/Octal/Binary?
43
44 // Special class for parsing into objects that define a ParseFrom() method
45 template <class T>
46 class _RE_MatchObject {
47 public:
48 static inline bool Parse(const char* str, int n, void* dest) {
49 T* object = reinterpret_cast<T*>(dest);
50 return object->ParseFrom(str, n);
51 }
52 };
53
54 class Arg {
55 public:
56 // Empty constructor so we can declare arrays of Arg
57 Arg();
58
59 // Constructor specially designed for NULL arguments
60 Arg(void*);
61
62 typedef bool (*Parser)(const char* str, int n, void* dest);
63
64 // Type-specific parsers
65 #define PCRE_MAKE_PARSER(type,name) \
66 Arg(type* p) : arg_(p), parser_(name) { } \
67 Arg(type* p, Parser parser) : arg_(p), parser_(parser) { }
68
69
70 PCRE_MAKE_PARSER(char, parse_char);
71 PCRE_MAKE_PARSER(unsigned char, parse_uchar);
72 PCRE_MAKE_PARSER(short, parse_short);
73 PCRE_MAKE_PARSER(unsigned short, parse_ushort);
74 PCRE_MAKE_PARSER(int, parse_int);
75 PCRE_MAKE_PARSER(unsigned int, parse_uint);
76 PCRE_MAKE_PARSER(long, parse_long);
77 PCRE_MAKE_PARSER(unsigned long, parse_ulong);
78 #if @pcre_have_long_long@
79 PCRE_MAKE_PARSER(long long, parse_longlong);
80 #endif
81 #if @pcre_have_ulong_long@
82 PCRE_MAKE_PARSER(unsigned long long, parse_ulonglong);
83 #endif
84 PCRE_MAKE_PARSER(float, parse_float);
85 PCRE_MAKE_PARSER(double, parse_double);
86 PCRE_MAKE_PARSER(std::string, parse_string);
87 PCRE_MAKE_PARSER(StringPiece, parse_stringpiece);
88
89 #undef PCRE_MAKE_PARSER
90
91 // Generic constructor
92 template <class T> Arg(T*, Parser parser);
93 // Generic constructor template
94 template <class T> Arg(T* p)
95 : arg_(p), parser_(_RE_MatchObject<T>::Parse) {
96 }
97
98 // Parse the data
99 bool Parse(const char* str, int n) const;
100
101 private:
102 void* arg_;
103 Parser parser_;
104
105 static bool parse_null (const char* str, int n, void* dest);
106 static bool parse_char (const char* str, int n, void* dest);
107 static bool parse_uchar (const char* str, int n, void* dest);
108 static bool parse_float (const char* str, int n, void* dest);
109 static bool parse_double (const char* str, int n, void* dest);
110 static bool parse_string (const char* str, int n, void* dest);
111 static bool parse_stringpiece (const char* str, int n, void* dest);
112
113 #define PCRE_DECLARE_INTEGER_PARSER(name) \
114 private: \
115 static bool parse_ ## name(const char* str, int n, void* dest); \
116 static bool parse_ ## name ## _radix( \
117 const char* str, int n, void* dest, int radix); \
118 public: \
119 static bool parse_ ## name ## _hex(const char* str, int n, void* dest); \
120 static bool parse_ ## name ## _octal(const char* str, int n, void* dest); \
121 static bool parse_ ## name ## _cradix(const char* str, int n, void* dest)
122
123 PCRE_DECLARE_INTEGER_PARSER(short);
124 PCRE_DECLARE_INTEGER_PARSER(ushort);
125 PCRE_DECLARE_INTEGER_PARSER(int);
126 PCRE_DECLARE_INTEGER_PARSER(uint);
127 PCRE_DECLARE_INTEGER_PARSER(long);
128 PCRE_DECLARE_INTEGER_PARSER(ulong);
129 PCRE_DECLARE_INTEGER_PARSER(longlong);
130 PCRE_DECLARE_INTEGER_PARSER(ulonglong);
131
132 #undef PCRE_DECLARE_INTEGER_PARSER
133 };
134
135 inline Arg::Arg() : arg_(NULL), parser_(parse_null) { }
136 inline Arg::Arg(void* p) : arg_(p), parser_(parse_null) { }
137
138 inline bool Arg::Parse(const char* str, int n) const {
139 return (*parser_)(str, n, arg_);
140 }
141
142 // This part of the parser, appropriate only for ints, deals with bases
143 #define MAKE_INTEGER_PARSER(type, name) \
144 inline Arg Hex(type* ptr) { \
145 return Arg(ptr, Arg::parse_ ## name ## _hex); } \
146 inline Arg Octal(type* ptr) { \
147 return Arg(ptr, Arg::parse_ ## name ## _octal); } \
148 inline Arg CRadix(type* ptr) { \
149 return Arg(ptr, Arg::parse_ ## name ## _cradix); }
150
151 MAKE_INTEGER_PARSER(short, short) /* */
152 MAKE_INTEGER_PARSER(unsigned short, ushort) /* */
153 MAKE_INTEGER_PARSER(int, int) /* Don't use semicolons */
154 MAKE_INTEGER_PARSER(unsigned int, uint) /* after these statement */
155 MAKE_INTEGER_PARSER(long, long) /* because they can cause */
156 MAKE_INTEGER_PARSER(unsigned long, ulong) /* compiler warnings if */
157 #if @pcre_have_long_long@ /* the checking level is */
158 MAKE_INTEGER_PARSER(long long, longlong) /* turned up high enough. */
159 #endif /* */
160 #if @pcre_have_ulong_long@ /* */
161 MAKE_INTEGER_PARSER(unsigned long long, ulonglong) /* */
162 #endif
163
164 #undef PCRE_IS_SET
165 #undef PCRE_SET_OR_CLEAR
166 #undef MAKE_INTEGER_PARSER
167
168 } // namespace pcrecpp
169
170
171 #endif /* _PCRECPPARG_H */

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