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authorIan Jackson <ijackson@chiark.greenend.org.uk>2016-07-13 21:24:43 +0100
committerIan Jackson <ijackson@chiark.greenend.org.uk>2016-07-13 21:24:43 +0100
commitcba4af1b7643b0da036ff78fd152f74a906c4e97 (patch)
tree84f90cc1a9542b2f374932b04ea0752eabbd3741 /pcrecpparg.h.in
Commit upstream pcre-8.39.tar.bz2
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+// Copyright (c) 2005, Google Inc.
+// All rights reserved.
+//
+// Redistribution and use in source and binary forms, with or without
+// modification, are permitted provided that the following conditions are
+// met:
+//
+// * Redistributions of source code must retain the above copyright
+// notice, this list of conditions and the following disclaimer.
+// * Redistributions in binary form must reproduce the above
+// copyright notice, this list of conditions and the following disclaimer
+// in the documentation and/or other materials provided with the
+// distribution.
+// * Neither the name of Google Inc. nor the names of its
+// contributors may be used to endorse or promote products derived from
+// this software without specific prior written permission.
+//
+// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+// A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+// OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+// DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+// THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+//
+// Author: Sanjay Ghemawat
+
+#ifndef _PCRECPPARG_H
+#define _PCRECPPARG_H
+
+#include <stdlib.h> // for NULL
+#include <string>
+
+#include <pcre.h>
+
+namespace pcrecpp {
+
+class StringPiece;
+
+// Hex/Octal/Binary?
+
+// Special class for parsing into objects that define a ParseFrom() method
+template <class T>
+class _RE_MatchObject {
+ public:
+ static inline bool Parse(const char* str, int n, void* dest) {
+ if (dest == NULL) return true;
+ T* object = reinterpret_cast<T*>(dest);
+ return object->ParseFrom(str, n);
+ }
+};
+
+class PCRECPP_EXP_DEFN Arg {
+ public:
+ // Empty constructor so we can declare arrays of Arg
+ Arg();
+
+ // Constructor specially designed for NULL arguments
+ Arg(void*);
+
+ typedef bool (*Parser)(const char* str, int n, void* dest);
+
+// Type-specific parsers
+#define PCRE_MAKE_PARSER(type,name) \
+ Arg(type* p) : arg_(p), parser_(name) { } \
+ Arg(type* p, Parser parser) : arg_(p), parser_(parser) { }
+
+
+ PCRE_MAKE_PARSER(char, parse_char);
+ PCRE_MAKE_PARSER(unsigned char, parse_uchar);
+ PCRE_MAKE_PARSER(short, parse_short);
+ PCRE_MAKE_PARSER(unsigned short, parse_ushort);
+ PCRE_MAKE_PARSER(int, parse_int);
+ PCRE_MAKE_PARSER(unsigned int, parse_uint);
+ PCRE_MAKE_PARSER(long, parse_long);
+ PCRE_MAKE_PARSER(unsigned long, parse_ulong);
+#if @pcre_have_long_long@
+ PCRE_MAKE_PARSER(long long, parse_longlong);
+#endif
+#if @pcre_have_ulong_long@
+ PCRE_MAKE_PARSER(unsigned long long, parse_ulonglong);
+#endif
+ PCRE_MAKE_PARSER(float, parse_float);
+ PCRE_MAKE_PARSER(double, parse_double);
+ PCRE_MAKE_PARSER(std::string, parse_string);
+ PCRE_MAKE_PARSER(StringPiece, parse_stringpiece);
+
+#undef PCRE_MAKE_PARSER
+
+ // Generic constructor
+ template <class T> Arg(T*, Parser parser);
+ // Generic constructor template
+ template <class T> Arg(T* p)
+ : arg_(p), parser_(_RE_MatchObject<T>::Parse) {
+ }
+
+ // Parse the data
+ bool Parse(const char* str, int n) const;
+
+ private:
+ void* arg_;
+ Parser parser_;
+
+ static bool parse_null (const char* str, int n, void* dest);
+ static bool parse_char (const char* str, int n, void* dest);
+ static bool parse_uchar (const char* str, int n, void* dest);
+ static bool parse_float (const char* str, int n, void* dest);
+ static bool parse_double (const char* str, int n, void* dest);
+ static bool parse_string (const char* str, int n, void* dest);
+ static bool parse_stringpiece (const char* str, int n, void* dest);
+
+#define PCRE_DECLARE_INTEGER_PARSER(name) \
+ private: \
+ static bool parse_ ## name(const char* str, int n, void* dest); \
+ static bool parse_ ## name ## _radix( \
+ const char* str, int n, void* dest, int radix); \
+ public: \
+ static bool parse_ ## name ## _hex(const char* str, int n, void* dest); \
+ static bool parse_ ## name ## _octal(const char* str, int n, void* dest); \
+ static bool parse_ ## name ## _cradix(const char* str, int n, void* dest)
+
+ PCRE_DECLARE_INTEGER_PARSER(short);
+ PCRE_DECLARE_INTEGER_PARSER(ushort);
+ PCRE_DECLARE_INTEGER_PARSER(int);
+ PCRE_DECLARE_INTEGER_PARSER(uint);
+ PCRE_DECLARE_INTEGER_PARSER(long);
+ PCRE_DECLARE_INTEGER_PARSER(ulong);
+ PCRE_DECLARE_INTEGER_PARSER(longlong);
+ PCRE_DECLARE_INTEGER_PARSER(ulonglong);
+
+#undef PCRE_DECLARE_INTEGER_PARSER
+};
+
+inline Arg::Arg() : arg_(NULL), parser_(parse_null) { }
+inline Arg::Arg(void* p) : arg_(p), parser_(parse_null) { }
+
+inline bool Arg::Parse(const char* str, int n) const {
+ return (*parser_)(str, n, arg_);
+}
+
+// This part of the parser, appropriate only for ints, deals with bases
+#define MAKE_INTEGER_PARSER(type, name) \
+ inline Arg Hex(type* ptr) { \
+ return Arg(ptr, Arg::parse_ ## name ## _hex); } \
+ inline Arg Octal(type* ptr) { \
+ return Arg(ptr, Arg::parse_ ## name ## _octal); } \
+ inline Arg CRadix(type* ptr) { \
+ return Arg(ptr, Arg::parse_ ## name ## _cradix); }
+
+MAKE_INTEGER_PARSER(short, short) /* */
+MAKE_INTEGER_PARSER(unsigned short, ushort) /* */
+MAKE_INTEGER_PARSER(int, int) /* Don't use semicolons */
+MAKE_INTEGER_PARSER(unsigned int, uint) /* after these statement */
+MAKE_INTEGER_PARSER(long, long) /* because they can cause */
+MAKE_INTEGER_PARSER(unsigned long, ulong) /* compiler warnings if */
+#if @pcre_have_long_long@ /* the checking level is */
+MAKE_INTEGER_PARSER(long long, longlong) /* turned up high enough. */
+#endif /* */
+#if @pcre_have_ulong_long@ /* */
+MAKE_INTEGER_PARSER(unsigned long long, ulonglong) /* */
+#endif
+
+#undef PCRE_IS_SET
+#undef PCRE_SET_OR_CLEAR
+#undef MAKE_INTEGER_PARSER
+
+} // namespace pcrecpp
+
+
+#endif /* _PCRECPPARG_H */