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/*
* Copyright (c) 2003-2007, John Wiegley. 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 New Artisans LLC 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.
*/
#ifndef _PARSER_H
#define _PARSER_H
#include "utils.h"
namespace ledger {
class account_t;
class journal_t;
class parser_t
{
public:
virtual ~parser_t() {}
virtual bool test(std::istream& in) const = 0;
virtual unsigned int parse(std::istream& in,
journal_t * journal,
account_t * master = NULL,
const optional<path>& original = none) = 0;
};
DECLARE_EXCEPTION(parse_error);
/************************************************************************
*
* General utility parsing functions
*/
inline char * skip_ws(char * ptr) {
while (*ptr == ' ' || *ptr == '\t' || *ptr == '\n')
ptr++;
return ptr;
}
inline char peek_next_nonws(std::istream& in) {
char c = in.peek();
while (! in.eof() && std::isspace(c)) {
in.get(c);
c = in.peek();
}
return c;
}
#define READ_INTO(str, targ, size, var, cond) { \
char * _p = targ; \
var = str.peek(); \
while (! str.eof() && var != '\n' && (cond) && _p - targ < size) { \
str.get(var); \
if (str.eof()) \
break; \
if (var == '\\') { \
str.get(var); \
if (in.eof()) \
break; \
} \
*_p++ = var; \
var = str.peek(); \
} \
*_p = '\0'; \
}
#define READ_INTO_(str, targ, size, var, idx, cond) { \
char * _p = targ; \
var = str.peek(); \
while (! str.eof() && var != '\n' && (cond) && _p - targ < size) { \
str.get(var); \
if (str.eof()) \
break; \
idx++; \
if (var == '\\') { \
str.get(var); \
if (in.eof()) \
break; \
idx++; \
} \
*_p++ = var; \
var = str.peek(); \
} \
*_p = '\0'; \
}
} // namespace ledger
#endif // _PARSER_H
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