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153 lines
3.3 KiB
C++
153 lines
3.3 KiB
C++
/* Classes for representing XML trees.
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Copyright (C) 2024-2026 Free Software Foundation, Inc.
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Contributed by David Malcolm <dmalcolm@redhat.com>.
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This file is part of GCC.
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GCC is free software; you can redistribute it and/or modify it under
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the terms of the GNU General Public License as published by the Free
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Software Foundation; either version 3, or (at your option) any later
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version.
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GCC is distributed in the hope that it will be useful, but WITHOUT ANY
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WARRANTY; without even the implied warranty of MERCHANTABILITY or
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FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
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for more details.
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You should have received a copy of the GNU General Public License
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along with GCC; see the file COPYING3. If not see
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<http://www.gnu.org/licenses/>. */
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#ifndef GCC_XML_H
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#define GCC_XML_H
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namespace xml {
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// Forward decls; indentation reflects inheritance
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struct node;
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struct text;
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struct node_with_children;
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struct document;
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struct element;
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struct doctypedecl;
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struct comment;
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struct raw;
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struct node
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{
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virtual ~node () {}
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virtual void write_as_xml (pretty_printer *pp,
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int depth, bool indent) const = 0;
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virtual text *dyn_cast_text ()
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{
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return nullptr;
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}
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virtual element *dyn_cast_element ()
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{
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return nullptr;
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}
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void dump (FILE *out) const;
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void DEBUG_FUNCTION dump () const { dump (stderr); }
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};
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struct text : public node
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{
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text (std::string str)
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: m_str (std::move (str))
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{}
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void write_as_xml (pretty_printer *pp,
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int depth, bool indent) const final override;
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text *dyn_cast_text () final override
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{
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return this;
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}
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std::string m_str;
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};
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struct node_with_children : public node
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{
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void add_child (std::unique_ptr<node> node);
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void add_text (std::string str);
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void add_text_from_pp (pretty_printer &pp);
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void add_comment (std::string str);
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element *find_child_element (std::string kind) const;
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std::vector<std::unique_ptr<node>> m_children;
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};
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struct document : public node_with_children
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{
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void write_as_xml (pretty_printer *pp,
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int depth, bool indent) const final override;
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std::unique_ptr<doctypedecl> m_doctypedecl;
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};
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struct doctypedecl : public node
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{
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// still abstract
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};
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struct element : public node_with_children
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{
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element (std::string kind, bool preserve_whitespace)
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: m_kind (std::move (kind)),
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m_preserve_whitespace (preserve_whitespace)
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{}
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element *dyn_cast_element () final override
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{
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return this;
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}
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void write_as_xml (pretty_printer *pp,
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int depth, bool indent) const final override;
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void set_attr (const char *name, std::string value);
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const char *get_attr (const char *name) const;
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std::string m_kind;
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bool m_preserve_whitespace;
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std::map<std::string, std::string> m_attributes;
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std::vector<std::string> m_key_insertion_order;
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};
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/* An XML comment. */
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struct comment : public node
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{
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comment (std::string text)
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: m_text (std::move (text))
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{
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}
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void write_as_xml (pretty_printer *pp,
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int depth, bool indent) const final override;
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std::string m_text;
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};
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/* A fragment of raw XML source, to be spliced in directly.
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Use sparingly. */
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struct raw : public node
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{
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raw (std::string xml_src)
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: m_xml_src (xml_src)
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{
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}
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void write_as_xml (pretty_printer *pp,
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int depth, bool indent) const final override;
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std::string m_xml_src;
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};
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} // namespace xml
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#endif /* GCC_XML_H. */
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