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/* Classes for representing XML trees.
Copyright (C) 2024-2025 Free Software Foundation, Inc.
Contributed by David Malcolm <dmalcolm@redhat.com>.
This file is part of GCC.
GCC is free software; you can redistribute it and/or modify it under
the terms of the GNU General Public License as published by the Free
Software Foundation; either version 3, or (at your option) any later
version.
GCC is distributed in the hope that it will be useful, but WITHOUT ANY
WARRANTY; without even the implied warranty of MERCHANTABILITY or
FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
for more details.
You should have received a copy of the GNU General Public License
along with GCC; see the file COPYING3. If not see
<http://www.gnu.org/licenses/>. */
#ifndef GCC_XML_H
#define GCC_XML_H
namespace xml {
// Forward decls; indentation reflects inheritance
struct node;
struct text;
struct node_with_children;
struct document;
struct element;
struct doctypedecl;
struct comment;
struct raw;
struct node
{
virtual ~node () {}
virtual void write_as_xml (pretty_printer *pp,
int depth, bool indent) const = 0;
virtual text *dyn_cast_text ()
{
return nullptr;
}
virtual element *dyn_cast_element ()
{
return nullptr;
}
void dump (FILE *out) const;
void DEBUG_FUNCTION dump () const { dump (stderr); }
};
struct text : public node
{
text (std::string str)
: m_str (std::move (str))
{}
void write_as_xml (pretty_printer *pp,
int depth, bool indent) const final override;
text *dyn_cast_text () final override
{
return this;
}
std::string m_str;
};
struct node_with_children : public node
{
void add_child (std::unique_ptr<node> node);
void add_text (std::string str);
void add_text_from_pp (pretty_printer &pp);
void add_comment (std::string str);
element *find_child_element (std::string kind) const;
std::vector<std::unique_ptr<node>> m_children;
};
struct document : public node_with_children
{
void write_as_xml (pretty_printer *pp,
int depth, bool indent) const final override;
std::unique_ptr<doctypedecl> m_doctypedecl;
};
struct doctypedecl : public node
{
// still abstract
};
struct element : public node_with_children
{
element (std::string kind, bool preserve_whitespace)
: m_kind (std::move (kind)),
m_preserve_whitespace (preserve_whitespace)
{}
element *dyn_cast_element () final override
{
return this;
}
void write_as_xml (pretty_printer *pp,
int depth, bool indent) const final override;
void set_attr (const char *name, std::string value);
const char *get_attr (const char *name) const;
std::string m_kind;
bool m_preserve_whitespace;
std::map<std::string, std::string> m_attributes;
std::vector<std::string> m_key_insertion_order;
};
/* An XML comment. */
struct comment : public node
{
comment (std::string text)
: m_text (std::move (text))
{
}
void write_as_xml (pretty_printer *pp,
int depth, bool indent) const final override;
std::string m_text;
};
/* A fragment of raw XML source, to be spliced in directly.
Use sparingly. */
struct raw : public node
{
raw (std::string xml_src)
: m_xml_src (xml_src)
{
}
void write_as_xml (pretty_printer *pp,
int depth, bool indent) const final override;
std::string m_xml_src;
};
} // namespace xml
#endif /* GCC_XML_H. */
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