not while printing out the data. This allows the data to be dumped more than once. base/cprintf.hh: need a destructor --HG-- extra : convert_revision : 235e9fe24488ac4c0ae1b562ef9fa6e0bd1e899c
198 lines
5.3 KiB
C++
198 lines
5.3 KiB
C++
/*
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* Copyright (c) 2003 The Regents of The University of Michigan
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions are
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* met: redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer;
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* redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution;
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* neither the name of the copyright holders nor the names of its
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* contributors may be used to endorse or promote products derived from
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* this software without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
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* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
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* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
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* A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
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* OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
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* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
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* LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
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* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*/
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#ifndef __CPRINTF_HH__
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#define __CPRINTF_HH__
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#include <iostream>
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#include <list>
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#include <sstream>
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#include <string>
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namespace cp {
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#include "base/cprintf_formats.hh"
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class ArgList
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{
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private:
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class Base
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{
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public:
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virtual ~Base() {}
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virtual void process(std::ostream &out, Format &fmt) = 0;
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};
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template <typename T>
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class Node : public Base
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{
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public:
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const T &data;
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public:
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Node(const T &d) : data(d) {}
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virtual void process(std::ostream &out, Format &fmt) {
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switch (fmt.format) {
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case Format::character:
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format_char(out, data, fmt);
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break;
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case Format::integer:
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format_integer(out, data, fmt);
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break;
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case Format::floating:
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format_float(out, data, fmt);
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break;
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case Format::string:
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format_string(out, data, fmt);
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break;
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default:
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out << "<bad format>";
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break;
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}
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}
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};
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typedef std::list<Base *> list_t;
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protected:
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list_t objects;
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std::ostream *stream;
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public:
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ArgList() : stream(&std::cout) {}
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~ArgList();
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template<class T>
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void append(const T &data) {
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Base *obj = new ArgList::Node<T>(data);
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objects.push_back(obj);
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}
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template<class T>
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void prepend(const T &data) {
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Base *obj = new ArgList::Node<T>(data);
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objects.push_front(obj);
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}
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void dump(const std::string &format);
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void dump(std::ostream &strm, const std::string &fmt)
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{ stream = &strm; dump(fmt); }
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std::string dumpToString(const std::string &format);
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friend ArgList &operator<<(std::ostream &str, ArgList &list);
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};
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template<class T>
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inline ArgList &
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operator,(ArgList &alist, const T &data)
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{
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alist.append(data);
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return alist;
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}
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class ArgListNull {
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};
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inline ArgList &
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operator,(ArgList &alist, ArgListNull)
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{ return alist; }
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//
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// cprintf(format, args, ...) prints to cout
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// (analogous to printf())
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//
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inline void
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__cprintf(const std::string &format, ArgList &args)
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{ args.dump(format); delete &args; }
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#define __cprintf__(format, args...) \
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cp::__cprintf(format, (*(new cp::ArgList), args))
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#define cprintf(args...) \
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__cprintf__(args, cp::ArgListNull())
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//
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// ccprintf(stream, format, args, ...) prints to the specified stream
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// (analogous to fprintf())
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//
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inline void
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__ccprintf(std::ostream &stream, const std::string &format, ArgList &args)
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{ args.dump(stream, format); delete &args; }
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#define __ccprintf__(stream, format, args...) \
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cp::__ccprintf(stream, format, (*(new cp::ArgList), args))
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#define ccprintf(stream, args...) \
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__ccprintf__(stream, args, cp::ArgListNull())
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//
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// csprintf(format, args, ...) returns a string
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// (roughly analogous to sprintf())
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//
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inline std::string
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__csprintf(const std::string &format, ArgList &args)
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{ std::string s = args.dumpToString(format); delete &args; return s; }
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#define __csprintf__(format, args...) \
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cp::__csprintf(format, (*(new cp::ArgList), args))
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#define csprintf(args...) \
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__csprintf__(args, cp::ArgListNull())
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template<class T>
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inline ArgList &
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operator<<(ArgList &list, const T &data)
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{
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list.append(data);
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return list;
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}
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inline ArgList &
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operator<<(std::ostream &str, ArgList &list)
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{
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list.stream = &str;
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return list;
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}
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class ArgListTemp
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{
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private:
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std::string format;
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ArgList *args;
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public:
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ArgListTemp(const std::string &f) : format(f) { args = new ArgList; }
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~ArgListTemp() { args->dump(format); delete args; }
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operator ArgList *() { return args; }
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};
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#define cformat(format) \
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(*((cp::ArgList *)cp::ArgListTemp(format)))
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}
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#endif // __CPRINTF_HH__
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