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#ifndef _ERROR_H
#define _ERROR_H
#include <exception>
#include <string>
#include <cstring>
#include <sstream>
#include <list>
class error_context
{
public:
std::string desc;
error_context(const std::string& _desc) throw() : desc(_desc) {}
virtual ~error_context() throw() {}
virtual void describe(std::ostream& out) const throw() {
if (! desc.empty())
out << desc << std::endl;
}
};
class file_context : public error_context
{
protected:
std::string file;
unsigned long line;
public:
file_context(const std::string& _file, unsigned long _line,
const std::string& desc = "") throw()
: file(_file), line(_line), error_context(desc) {}
virtual ~file_context() throw() {}
virtual void describe(std::ostream& out) const throw() {
if (! desc.empty())
out << desc << " ";
out << "\"" << file << "\", line " << line << ": ";
}
};
namespace ledger { class value_t; }
class value_context : public error_context
{
ledger::value_t * bal;
public:
value_context(const ledger::value_t& _bal,
const std::string& desc = "") throw();
virtual ~value_context() throw();
virtual void describe(std::ostream& out) const throw();
};
namespace ledger { class value_expr_t; }
class valexpr_context : public error_context {
public:
const ledger::value_expr_t * expr;
const ledger::value_expr_t * error_node;
valexpr_context(const ledger::value_expr_t * _expr,
const std::string& desc = "") throw();
virtual ~valexpr_context() throw();
virtual void describe(std::ostream& out) const throw();
};
class line_context : public error_context {
public:
std::string line;
long pos;
line_context(const std::string& _line, long _pos,
const std::string& desc = "") throw()
: line(_line), pos(_pos), error_context(desc) {}
virtual ~line_context() throw() {}
virtual void describe(std::ostream& out) const throw();
};
class include_context : public file_context {
public:
include_context(const std::string& file, unsigned long line,
const std::string& desc = "") throw()
: file_context(file, line, desc) {}
virtual ~include_context() throw() {}
virtual void describe(std::ostream& out) const throw() {
if (! desc.empty())
out << desc << ": ";
out << "\"" << file << "\", line " << line << ":" << std::endl;
}
};
namespace ledger { class entry_base_t; }
class entry_context : public error_context {
public:
const ledger::entry_base_t& entry;
entry_context(const ledger::entry_base_t& _entry,
const std::string& desc = "") throw()
: entry(_entry), error_context(desc) {}
virtual ~entry_context() throw() {}
virtual void describe(std::ostream& out) const throw();
};
namespace ledger { class transaction_t; }
class xact_context : public file_context {
public:
const ledger::transaction_t& xact;
xact_context(const ledger::transaction_t& _xact,
const std::string& desc = "") throw();
virtual ~xact_context() throw() {}
};
//////////////////////////////////////////////////////////////////////
class str_exception : public std::exception {
protected:
std::string reason;
public:
std::list<error_context *> context;
str_exception(const std::string& _reason,
error_context * ctxt = NULL) throw()
: reason(_reason) {
if (ctxt)
context.push_back(ctxt);
}
virtual ~str_exception() throw() {
for (std::list<error_context *>::iterator i = context.begin();
i != context.end();
i++)
delete *i;
}
virtual void reveal_context(std::ostream& out,
const std::string& kind) const throw() {
for (std::list<error_context *>::const_reverse_iterator i =
context.rbegin();
i != context.rend();
i++) {
std::list<error_context *>::const_reverse_iterator x = i;
if (++x == context.rend())
out << kind << ": ";
(*i)->describe(out);
}
}
virtual const char* what() const throw() {
return reason.c_str();
}
};
class error : public str_exception {
public:
error(const std::string& reason, error_context * ctxt = NULL) throw()
: str_exception(reason, ctxt) {}
virtual ~error() throw() {}
};
class fatal : public str_exception {
public:
fatal(const std::string& reason, error_context * ctxt = NULL) throw()
: str_exception(reason, ctxt) {}
virtual ~fatal() throw() {}
};
class fatal_assert : public fatal {
public:
fatal_assert(const std::string& reason, error_context * ctxt = NULL) throw()
: fatal(std::string("assertion failed '") + reason + "'", ctxt) {}
virtual ~fatal_assert() throw() {}
};
namespace ledger {
class compute_error : public error {
public:
compute_error(const std::string& reason, error_context * ctxt = NULL) throw()
: error(reason, ctxt) {}
virtual ~compute_error() throw() {}
};
class value_expr_error : public error {
public:
value_expr_error(const std::string& reason,
error_context * ctxt = NULL) throw()
: error(reason, ctxt) {}
virtual ~value_expr_error() throw() {}
};
class interval_expr_error : public error {
public:
interval_expr_error(const std::string& reason,
error_context * ctxt = NULL) throw()
: error(reason, ctxt) {}
virtual ~interval_expr_error() throw() {}
};
class format_error : public error {
public:
format_error(const std::string& reason, error_context * ctxt = NULL) throw()
: error(reason, ctxt) {}
virtual ~format_error() throw() {}
};
class parse_error : public error {
public:
parse_error(const std::string& reason, error_context * ctxt = NULL) throw()
: error(reason, ctxt) {}
virtual ~parse_error() throw() {}
};
class value_error : public error {
public:
value_error(const std::string& reason, error_context * ctxt = NULL) throw()
: error(reason, ctxt) {}
virtual ~value_error() throw() {}
};
class balance_error : public error {
public:
balance_error(const std::string& reason, error_context * ctxt = NULL) throw()
: error(reason, ctxt) {}
virtual ~balance_error() throw() {}
};
} // namespace ledger
#endif // _ERROR_H
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