Implemented project structure

xpack-riscv-none-elf-gcc-13.4.0-1/lib/gcc/riscv-none-elf/13.4.0/plugin/include/json.h

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+/* JSON trees
+   Copyright (C) 2017-2023 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_JSON_H
+#define GCC_JSON_H
+
+/* Implementation of JSON, a lightweight data-interchange format.
+
+   See http://www.json.org/
+   and http://www.ecma-international.org/publications/files/ECMA-ST/ECMA-404.pdf
+   and https://tools.ietf.org/html/rfc7159
+
+   Supports creating a DOM-like tree of json::value *, and then dumping
+   json::value * to text.  */
+
+namespace json
+{
+
+/* Forward decls of json::value and its subclasses (using indentation
+   to denote inheritance.  */
+
+class value;
+  class object;
+  class array;
+  class float_number;
+  class integer_number;
+  class string;
+  class literal;
+
+/* An enum for discriminating the subclasses of json::value.  */
+
+enum kind
+{
+  /* class json::object.  */
+  JSON_OBJECT,
+
+  /* class json::array.  */
+  JSON_ARRAY,
+
+  /* class json::integer_number.  */
+  JSON_INTEGER,
+
+  /* class json::float_number.  */
+  JSON_FLOAT,
+
+  /* class json::string.  */
+  JSON_STRING,
+
+  /* class json::literal uses these three values to identify the
+     particular literal.  */
+  JSON_TRUE,
+  JSON_FALSE,
+  JSON_NULL
+};
+
+/* Base class of JSON value.  */
+
+class value
+{
+ public:
+  virtual ~value () {}
+  virtual enum kind get_kind () const = 0;
+  virtual void print (pretty_printer *pp) const = 0;
+
+  void dump (FILE *) const;
+};
+
+/* Subclass of value for objects: a collection of key/value pairs
+   preserving the ordering in which keys were inserted.
+
+   Preserving the order eliminates non-determinism in the output,
+   making it easier for the user to compare repeated invocations.  */
+
+class object : public value
+{
+ public:
+  ~object ();
+
+  enum kind get_kind () const final override { return JSON_OBJECT; }
+  void print (pretty_printer *pp) const final override;
+
+  void set (const char *key, value *v);
+  value *get (const char *key) const;
+
+ private:
+  typedef hash_map <char *, value *,
+    simple_hashmap_traits<nofree_string_hash, value *> > map_t;
+  map_t m_map;
+
+  /* Keep track of order in which keys were inserted.  */
+  auto_vec <const char *> m_keys;
+};
+
+/* Subclass of value for arrays.  */
+
+class array : public value
+{
+ public:
+  ~array ();
+
+  enum kind get_kind () const final override { return JSON_ARRAY; }
+  void print (pretty_printer *pp) const final override;
+
+  void append (value *v);
+
+ private:
+  auto_vec<value *> m_elements;
+};
+
+/* Subclass of value for floating-point numbers.  */
+
+class float_number : public value
+{
+ public:
+  float_number (double value) : m_value (value) {}
+
+  enum kind get_kind () const final override { return JSON_FLOAT; }
+  void print (pretty_printer *pp) const final override;
+
+  double get () const { return m_value; }
+
+ private:
+  double m_value;
+};
+
+/* Subclass of value for integer-valued numbers.  */
+
+class integer_number : public value
+{
+ public:
+  integer_number (long value) : m_value (value) {}
+
+  enum kind get_kind () const final override { return JSON_INTEGER; }
+  void print (pretty_printer *pp) const final override;
+
+  long get () const { return m_value; }
+
+ private:
+  long m_value;
+};
+
+
+/* Subclass of value for strings.  */
+
+class string : public value
+{
+ public:
+  explicit string (const char *utf8);
+  string (const char *utf8, size_t len);
+  ~string () { free (m_utf8); }
+
+  enum kind get_kind () const final override { return JSON_STRING; }
+  void print (pretty_printer *pp) const final override;
+
+  const char *get_string () const { return m_utf8; }
+  size_t get_length () const { return m_len; }
+
+ private:
+  char *m_utf8;
+  size_t m_len;
+};
+
+/* Subclass of value for the three JSON literals "true", "false",
+   and "null".  */
+
+class literal : public value
+{
+ public:
+  literal (enum kind kind) : m_kind (kind) {}
+
+  /* Construct literal for a boolean value.  */
+  literal (bool value): m_kind (value ? JSON_TRUE : JSON_FALSE) {}
+
+  enum kind get_kind () const final override { return m_kind; }
+  void print (pretty_printer *pp) const final override;
+
+ private:
+  enum kind m_kind;
+};
+
+} // namespace json
+
+#endif  /* GCC_JSON_H  */