/[pcre]/code/trunk/pcrecpparg.h.in
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Contents of /code/trunk/pcrecpparg.h.in

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Revision 199 - (hide annotations) (download)
Tue Jul 31 14:39:09 2007 UTC (7 years, 3 months ago) by ph10
File size: 6830 byte(s)
Daniel's patch for config.h and Windows DLL declarations (not fully working).

1 nigel 87 // 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 ph10 199 #include <pcre.h>
39    
40 nigel 87 namespace pcrecpp {
41    
42     class StringPiece;
43    
44     // Hex/Octal/Binary?
45    
46     // Special class for parsing into objects that define a ParseFrom() method
47     template <class T>
48     class _RE_MatchObject {
49     public:
50     static inline bool Parse(const char* str, int n, void* dest) {
51     T* object = reinterpret_cast<T*>(dest);
52     return object->ParseFrom(str, n);
53     }
54     };
55    
56 ph10 199 class PCRECPP_EXP_DEFN Arg {
57 nigel 87 public:
58     // Empty constructor so we can declare arrays of Arg
59     Arg();
60    
61     // Constructor specially designed for NULL arguments
62     Arg(void*);
63    
64     typedef bool (*Parser)(const char* str, int n, void* dest);
65    
66     // Type-specific parsers
67     #define PCRE_MAKE_PARSER(type,name) \
68     Arg(type* p) : arg_(p), parser_(name) { } \
69     Arg(type* p, Parser parser) : arg_(p), parser_(parser) { }
70    
71    
72     PCRE_MAKE_PARSER(char, parse_char);
73     PCRE_MAKE_PARSER(unsigned char, parse_uchar);
74     PCRE_MAKE_PARSER(short, parse_short);
75     PCRE_MAKE_PARSER(unsigned short, parse_ushort);
76     PCRE_MAKE_PARSER(int, parse_int);
77     PCRE_MAKE_PARSER(unsigned int, parse_uint);
78     PCRE_MAKE_PARSER(long, parse_long);
79     PCRE_MAKE_PARSER(unsigned long, parse_ulong);
80     #if @pcre_have_long_long@
81     PCRE_MAKE_PARSER(long long, parse_longlong);
82     #endif
83     #if @pcre_have_ulong_long@
84     PCRE_MAKE_PARSER(unsigned long long, parse_ulonglong);
85     #endif
86     PCRE_MAKE_PARSER(float, parse_float);
87     PCRE_MAKE_PARSER(double, parse_double);
88     PCRE_MAKE_PARSER(std::string, parse_string);
89     PCRE_MAKE_PARSER(StringPiece, parse_stringpiece);
90    
91     #undef PCRE_MAKE_PARSER
92    
93     // Generic constructor
94     template <class T> Arg(T*, Parser parser);
95     // Generic constructor template
96     template <class T> Arg(T* p)
97     : arg_(p), parser_(_RE_MatchObject<T>::Parse) {
98     }
99    
100     // Parse the data
101     bool Parse(const char* str, int n) const;
102    
103     private:
104     void* arg_;
105     Parser parser_;
106    
107     static bool parse_null (const char* str, int n, void* dest);
108     static bool parse_char (const char* str, int n, void* dest);
109     static bool parse_uchar (const char* str, int n, void* dest);
110     static bool parse_float (const char* str, int n, void* dest);
111     static bool parse_double (const char* str, int n, void* dest);
112     static bool parse_string (const char* str, int n, void* dest);
113     static bool parse_stringpiece (const char* str, int n, void* dest);
114    
115     #define PCRE_DECLARE_INTEGER_PARSER(name) \
116     private: \
117     static bool parse_ ## name(const char* str, int n, void* dest); \
118     static bool parse_ ## name ## _radix( \
119     const char* str, int n, void* dest, int radix); \
120     public: \
121     static bool parse_ ## name ## _hex(const char* str, int n, void* dest); \
122     static bool parse_ ## name ## _octal(const char* str, int n, void* dest); \
123     static bool parse_ ## name ## _cradix(const char* str, int n, void* dest)
124    
125     PCRE_DECLARE_INTEGER_PARSER(short);
126     PCRE_DECLARE_INTEGER_PARSER(ushort);
127     PCRE_DECLARE_INTEGER_PARSER(int);
128     PCRE_DECLARE_INTEGER_PARSER(uint);
129     PCRE_DECLARE_INTEGER_PARSER(long);
130     PCRE_DECLARE_INTEGER_PARSER(ulong);
131     PCRE_DECLARE_INTEGER_PARSER(longlong);
132     PCRE_DECLARE_INTEGER_PARSER(ulonglong);
133    
134     #undef PCRE_DECLARE_INTEGER_PARSER
135     };
136    
137     inline Arg::Arg() : arg_(NULL), parser_(parse_null) { }
138     inline Arg::Arg(void* p) : arg_(p), parser_(parse_null) { }
139    
140     inline bool Arg::Parse(const char* str, int n) const {
141     return (*parser_)(str, n, arg_);
142     }
143    
144     // This part of the parser, appropriate only for ints, deals with bases
145     #define MAKE_INTEGER_PARSER(type, name) \
146     inline Arg Hex(type* ptr) { \
147     return Arg(ptr, Arg::parse_ ## name ## _hex); } \
148     inline Arg Octal(type* ptr) { \
149     return Arg(ptr, Arg::parse_ ## name ## _octal); } \
150     inline Arg CRadix(type* ptr) { \
151     return Arg(ptr, Arg::parse_ ## name ## _cradix); }
152    
153 nigel 93 MAKE_INTEGER_PARSER(short, short) /* */
154     MAKE_INTEGER_PARSER(unsigned short, ushort) /* */
155     MAKE_INTEGER_PARSER(int, int) /* Don't use semicolons */
156     MAKE_INTEGER_PARSER(unsigned int, uint) /* after these statement */
157     MAKE_INTEGER_PARSER(long, long) /* because they can cause */
158     MAKE_INTEGER_PARSER(unsigned long, ulong) /* compiler warnings if */
159     #if @pcre_have_long_long@ /* the checking level is */
160     MAKE_INTEGER_PARSER(long long, longlong) /* turned up high enough. */
161     #endif /* */
162     #if @pcre_have_ulong_long@ /* */
163     MAKE_INTEGER_PARSER(unsigned long long, ulonglong) /* */
164 nigel 87 #endif
165    
166     #undef PCRE_IS_SET
167     #undef PCRE_SET_OR_CLEAR
168     #undef MAKE_INTEGER_PARSER
169    
170     } // namespace pcrecpp
171    
172    
173     #endif /* _PCRECPPARG_H */

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