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// file : xsde/cxx/parser/error.hxx
// author : Boris Kolpackov <boris@codesynthesis.com>
// copyright : Copyright (c) 2005-2011 Code Synthesis Tools CC
// license : GNU GPL v2 + exceptions; see accompanying LICENSE file
#ifndef XSDE_CXX_PARSER_ERROR_HXX
#define XSDE_CXX_PARSER_ERROR_HXX
#include <xsde/cxx/config.hxx>
#include <xsde/cxx/sys-error.hxx>
#include <xsde/cxx/parser/expat/xml-error.hxx>
#ifdef XSDE_PARSER_VALIDATION
# include <xsde/cxx/schema-error.hxx>
#endif
namespace xsde
{
namespace cxx
{
namespace parser
{
using expat::xml_error;
// This type is only used when C++ exceptions are not used.
//
struct error
{
enum error_type
{
none,
sys,
xml,
schema,
app
};
public:
error_type
type () const;
// Line and column are only available for xml, schema, and
// app errors.
//
unsigned long
line () const;
unsigned long
column () const;
// Returns true if there is an error so that you can write
// if (p.error ()) or if (error e = p.error ()).
//
typedef void (error::*bool_convertible) ();
operator bool_convertible () const;
// sys
//
public:
error (sys_error);
sys_error
sys_code () const;
const char*
sys_text () const;
// xml
//
public:
error (xml_error, unsigned long line, unsigned long column);
xml_error
xml_code () const;
const char*
xml_text () const;
// schema
//
#ifdef XSDE_PARSER_VALIDATION
public:
error (schema_error::value, unsigned long line, unsigned long column);
schema_error
schema_code () const;
const char*
schema_text () const;
#endif
// app
//
public:
error (int app_code, unsigned long line, unsigned long column);
int
app_code () const;
public:
error ();
private:
void
true_ ();
private:
error_type type_;
unsigned long line_;
unsigned long column_;
union
{
sys_error::value sys;
xml_error xml;
#ifdef XSDE_PARSER_VALIDATION
schema_error::value schema;
#endif
int app;
} code_;
};
}
}
}
#include <xsde/cxx/parser/error.ixx>
#endif // XSDE_CXX_PARSER_ERROR_HXX
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