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// file : xsde/cxx/parser/elements.hxx
// copyright : Copyright (c) 2005-2011 Code Synthesis Tools CC
// license : GNU GPL v2 + exceptions; see accompanying LICENSE file
#ifndef XSDE_CXX_PARSER_ELEMENTS_HXX
#define XSDE_CXX_PARSER_ELEMENTS_HXX
#include <xsde/cxx/config.hxx>
#include <xsde/cxx/ro-string.hxx>
#ifdef XSDE_PARSER_VALIDATION
# include <xsde/cxx/schema-error.hxx>
#endif
#ifndef XSDE_EXCEPTIONS
# include <xsde/cxx/sys-error.hxx>
# include <xsde/cxx/parser/error.hxx>
#endif
#include <xsde/cxx/parser/context.hxx>
namespace xsde
{
namespace cxx
{
namespace parser
{
// pre() and post() are overridable pre/post callbacks, i.e., the
// derived parser can override them without calling the base version.
// _pre() and _post() are not overridable pre/post callbacks in the
// sense that the derived parser may override them but has to call
// the base version. The call sequence is as shown below:
//
// pre ()
// _pre ()
// _post ()
// post ()
//
struct parser_base
{
virtual
~parser_base ();
parser_base ();
#ifdef XSDE_REUSE_STYLE_TIEIN
parser_base (parser_base* impl, void*);
#endif
public:
virtual void
pre ();
virtual void
_pre ();
// The type argument is a type name and namespace from the
// xsi:type attribute in the form "<name> <namespace>" with
// the space and namespace part absent if the type does not
// have a namespace or 0 if xsi:type is not present.
//
#ifdef XSDE_POLYMORPHIC
virtual void
_start_element (const ro_string& ns,
const ro_string& name,
const char* type) = 0;
#else
virtual void
_start_element (const ro_string& ns,
const ro_string& name) = 0;
#endif
virtual void
_end_element (const ro_string& ns,
const ro_string& name) = 0;
virtual void
_attribute (const ro_string& ns,
const ro_string& name,
const ro_string& value) = 0;
virtual void
_characters (const ro_string&) = 0;
virtual void
_post ();
// The post() signature varies depending on the parser return
// type.
//
public:
// The following functions are called when wildcard content is
// encountered. Override them to handle mixed content models,
// any/anyAttribute, and anyType/anySimpleType. By default
// these functions do nothing.
//
#ifdef XSDE_POLYMORPHIC
virtual void
_start_any_element (const ro_string& ns,
const ro_string& name,
const char* type);
#else
virtual void
_start_any_element (const ro_string& ns,
const ro_string& name);
#endif
virtual void
_end_any_element (const ro_string& ns,
const ro_string& name);
virtual void
_any_attribute (const ro_string& ns,
const ro_string& name,
const ro_string& value);
virtual void
_any_characters (const ro_string&);
public:
// Implementation callbacks for _pre and _post. The _pre and _post
// callbacks should never be called directly. Instead, the *_impl
// versions should be used. By default _pre_impl and _post_impl
// simply call _pre and _post respectively.
//
virtual void
_pre_impl (context&);
virtual void
_post_impl ();
#ifdef XSDE_POLYMORPHIC
public:
// Dynamic type in the form "<name> <namespace>" with
// the space and namespace part absent if the type does
// not have a namespace.
//
virtual const char*
_dynamic_type () const;
#endif
public:
context&
_context ();
// Reset the parser state after an error.
//
virtual void
_reset ();
// Error handling via codes. If the error is set while parser
// is in the context, the error is set in the context, instead
// of the parser. Since pre() and post() calls are not in
// context, the parser stores application and system errors
// locally for this case.
//
#ifndef XSDE_EXCEPTIONS
public:
error
_error () const;
// Set application error.
//
void
_app_error (int);
int
_app_error () const;
#endif
// Schema error.
//
#ifdef XSDE_PARSER_VALIDATION
public:
void
_schema_error (context::schema_error_t);
#endif
// System error.
//
#ifndef XSDE_EXCEPTIONS
public:
context::sys_error_t
_sys_error () const;
void
_sys_error (context::sys_error_t);
#endif
// Implementation.
//
#ifndef XSDE_EXCEPTIONS
public:
enum error_type_t
{
error_none = 0,
error_app,
error_sys
};
error_type_t
_error_type () const;
void
_copy_error (context&) const;
private:
error_type_t error_type_;
union
{
int app;
context::sys_error_t sys;
} error_code_;
#endif
protected:
bool resetting_;
context* context_;
#ifdef XSDE_REUSE_STYLE_TIEIN
protected:
parser_base* parent_;
parser_base* impl_;
void
_set_parent_chain ();
#ifndef XSDE_EXCEPTIONS
const parser_base*
_ultimate_impl () const;
#endif
#endif
protected:
parser_state previous_;
};
}
}
}
#include <xsde/cxx/parser/elements.ixx>
#endif // XSDE_CXX_PARSER_ELEMENTS_HXX
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