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 // -*-C++-*-
 // FlexLexer.h -- define interfaces for lexical analyzer classes generated
 // by flex
 
 // SPDX-FileCopyrightText: 1993 The Regents of the University of California. All rights reserved.
 // SPDX-FileContributor: This code is derived from software contributed to Berkeley by Kent Williams and Tom Epperly.
 //
 // SPDX-License-Identifier: BSD-2-Clause
 
 // This file defines FlexLexer, an abstract class which specifies the
 // external interface provided to flex C++ lexer objects, and yyFlexLexer,
 // which defines a particular lexer class.
 //
 // If you want to create multiple lexer classes, you use the -P flag
 // to rename each yyFlexLexer to some other xxFlexLexer.  You then
 // include <FlexLexer.h> in your other sources once per lexer class:
 //
 //  #undef yyFlexLexer
 //  #define yyFlexLexer xxFlexLexer
 //  #include <FlexLexer.h>
 //
 //  #undef yyFlexLexer
 //  #define yyFlexLexer zzFlexLexer
 //  #include <FlexLexer.h>
 //  ...
 
 #ifndef __FLEX_LEXER_H
 // Never included before - need to define base class.
 #define __FLEX_LEXER_H
 
 #include <iostream>
 #ifndef FLEX_STD
 #define FLEX_STD std::
 #endif
 
 extern "C++" {
 
 struct yy_buffer_state;
 typedef int yy_state_type;
 
 class FlexLexer
 {
 public:
     virtual ~FlexLexer()
     {
     }
 
     const char *YYText() const
     {
         return yytext;
     }
     int YYLeng() const
     {
         return yyleng;
     }
 
     virtual void yy_switch_to_buffer(struct yy_buffer_state *new_buffer) = 0;
     virtual struct yy_buffer_state *yy_create_buffer(FLEX_STD istream *s, int size) = 0;
     virtual void yy_delete_buffer(struct yy_buffer_state *b) = 0;
     virtual void yyrestart(FLEX_STD istream *s) = 0;
 
     virtual int yylex() = 0;
 
     // Call yylex with new input/output sources.
     int yylex(FLEX_STD istream *new_in, FLEX_STD ostream *new_out = nullptr)
     {
         switch_streams(new_in, new_out);
         return yylex();
     }
 
     // Switch to new input/output streams.  A nil stream pointer
     // indicates "keep the current one".
     virtual void switch_streams(FLEX_STD istream *new_in = nullptr, FLEX_STD ostream *new_out = nullptr) = 0;
 
     int lineno() const
     {
         return yylineno;
     }
 
     int debug() const
     {
         return yy_flex_debug;
     }
     void set_debug(int flag)
     {
         yy_flex_debug = flag;
     }
 
 protected:
     char *yytext;
     int yyleng;
     int yylineno; // only maintained if you use %option yylineno
     int yy_flex_debug; // only has effect with -d or "%option debug"
 };
 }
 #endif // FLEXLEXER_H
 
 #if defined(yyFlexLexer) || !defined(yyFlexLexerOnce)
 // Either this is the first time through (yyFlexLexerOnce not defined),
 // or this is a repeated include to define a different flavor of
 // yyFlexLexer, as discussed in the flex manual.
 #define yyFlexLexerOnce
 
 extern "C++" {
 
 class yyFlexLexer : public FlexLexer
 {
 public:
     // arg_yyin and arg_yyout default to the cin and cout, but we
     // only make that assignment when initializing in yylex().
     yyFlexLexer(FLEX_STD istream *arg_yyin = nullptr, FLEX_STD ostream *arg_yyout = nullptr);
 
     ~yyFlexLexer() override;
 
     void yy_switch_to_buffer(struct yy_buffer_state *new_buffer) override;
     struct yy_buffer_state *yy_create_buffer(FLEX_STD istream *s, int size) override;
     void yy_delete_buffer(struct yy_buffer_state *b) override;
     void yyrestart(FLEX_STD istream *s) override;
 
     void yypush_buffer_state(struct yy_buffer_state *new_buffer);
     void yypop_buffer_state();
 
     virtual int yylex() override;
     virtual void switch_streams(FLEX_STD istream *new_in, FLEX_STD ostream *new_out = nullptr) override;
     virtual int yywrap();
 
 protected:
     virtual int LexerInput(char *buf, int max_size);
     virtual void LexerOutput(const char *buf, int size);
     virtual void LexerError(const char *msg);
 
     void yyunput(int c, char *buf_ptr);
     int yyinput();
 
     void yy_load_buffer_state();
     void yy_init_buffer(struct yy_buffer_state *b, FLEX_STD istream *s);
     void yy_flush_buffer(struct yy_buffer_state *b);
 
     int yy_start_stack_ptr;
     int yy_start_stack_depth;
     int *yy_start_stack;
 
     void yy_push_state(int new_state);
     void yy_pop_state();
     int yy_top_state();
 
     yy_state_type yy_get_previous_state();
     yy_state_type yy_try_NUL_trans(yy_state_type current_state);
     int yy_get_next_buffer();
 
     FLEX_STD istream *yyin; // input source for default LexerInput
     FLEX_STD ostream *yyout; // output sink for default LexerOutput
 
     // yy_hold_char holds the character lost when yytext is formed.
     char yy_hold_char;
 
     // Number of characters read into yy_ch_buf.
     int yy_n_chars;
 
     // Points to current character in buffer.
     char *yy_c_buf_p;
 
     int yy_init; // whether we need to initialize
     int yy_start; // start state number
 
     // Flag which is used to allow yywrap()'s to do buffer switches
     // instead of setting up a fresh yyin.  A bit of a hack ...
     int yy_did_buffer_switch_on_eof;
 
     size_t yy_buffer_stack_top; /**< index of top of stack. */
     size_t yy_buffer_stack_max; /**< capacity of stack. */
     struct yy_buffer_state **yy_buffer_stack; /**< Stack as an array. */
     void yyensure_buffer_stack(void);
 
     // The following are not always needed, but may be depending
     // on use of certain flex features (like REJECT or yymore()).
 
     yy_state_type yy_last_accepting_state;
     char *yy_last_accepting_cpos;
 
     yy_state_type *yy_state_buf;
     yy_state_type *yy_state_ptr;
 
     char *yy_full_match;
     int *yy_full_state;
     int yy_full_lp;
 
     int yy_lp;
     int yy_looking_for_trail_begin;
 
     int yy_more_flag;
     int yy_more_len;
     int yy_more_offset;
     int yy_prev_more_offset;
 };
 }
 
 #endif // yyFlexLexer || ! yyFlexLexerOnce