view tests/agcl/parsifal/good/sort.c @ 15:f5acaf0c8a29

Don't cast through "volatile int". Causes a gcc warning nowadays. XXX: should put something else back here to frighten the optimizer
author David A. Holland
date Tue, 31 May 2022 01:00:55 -0400
parents 13d2b8934445
children
line wrap: on
line source

  class String {
    char *value;
  public:
    String();
    String(unsigned char *);
    int operator < (const String &);
  };

/*
 * AnaGram, A System for Syntax Directed Programming
 * File generated by: ...
 *
 * AnaGram Parsing Engine
 * Copyright 1993-2002 Parsifal Software. All Rights Reserved.
 *
 * This software is provided 'as-is', without any express or implied
 * warranty.  In no event will the authors be held liable for any damages
 * arising from the use of this software.
 *
 * Permission is granted to anyone to use this software for any purpose,
 * including commercial applications, and to alter it and redistribute it
 * freely, subject to the following restrictions:
 *
 * 1. The origin of this software must not be misrepresented; you must not
 *    claim that you wrote the original software. If you use this software
 *    in a product, an acknowledgment in the product documentation would be
 *    appreciated but is not required.
 * 2. Altered source versions must be plainly marked as such, and must not be
 *    misrepresented as being the original software.
 * 3. This notice may not be removed or altered from any source distribution.
 */

#ifndef SORT_H
#include "sort.h"
#endif

#ifndef SORT_H
#error Mismatched header file
#endif

#include <ctype.h>
#include <stdio.h>

#define RULE_CONTEXT (&((PCB).cs[(PCB).ssx]))
#define ERROR_CONTEXT ((PCB).cs[(PCB).error_frame_ssx])
#define CONTEXT ((PCB).cs[(PCB).ssx])



sort_pcb_type sort_pcb;
#define PCB sort_pcb

/*  Line -, sort.syn */
  #include <string.h>
  #include <stdio.h>
  #include "agmap.h"


  #define GET_CONTEXT CONTEXT = PCB.pointer

  AgMap<String, String> map;

  String::String() : value(new char[PCB.pointer - CONTEXT + 1]) {
    int length = PCB.pointer - CONTEXT;
    strncpy(value, CONTEXT, length);
    value[length] = 0;
  }

  String::String(unsigned char *p) : value(new char[p - CONTEXT + 1]) {
    int length = p - CONTEXT;
    strncpy(value, CONTEXT, length);
    value[length] = 0;
  }

  int operator < (const String &s) {
    return strcmp(value, s.value) < 0;
  }

  enum ConditionCode {
    success,
    incorrectArgumentCount,
    cannotOpenInput,
    cannotSeek,
    ftellFailure,
    insufficientMemory,
    readError,
    parseError
  };

 int main(int argc, char *argv[]) {

    /* Check for enough arguments */
    if (argc != 2) {
      printf("Usage: %s <filename>\n", argv[0]);
      return incorrectArgumentCount;
    }

    /* Open input file */
    FILE *input = fopen(argv[1],"r");
    if (input == NULL) {
      printf("Cannot open %s\n", argv[1]);
      return cannotOpenInput;
    }

    /* find out how big the file is */
    if (fseek(input, SEEK_SET, SEEK_END)) {
      printf("Seek error on %s\n", argv[1]);
      return cannotSeek;
    }
    long fileLength = ftell(input);
    if (fileLength < 0 ) {    // -1L is error return
      printf("Error getting file length (%d) of %s\n", fileLength, argv[1]);
      return ftellFailure;
    }
    /* fseek to beginning of file */
    if (fseek(input, 0, SEEK_SET)) {
      printf("Seek error on %s\n", argv[1]);
      return cannotSeek;
    }

    /* Allocate storage for input string */
    char *scriptString = new char[(size_t) fileLength + 1];
    if (scriptString == NULL) {
      printf("Insufficient memory\n");
      return insufficientMemory;
    }

    /* read file */
    size_t stringLength = fread(scriptString, 1, (unsigned)fileLength, input);
    if (stringLength == 0) {
      printf("Unable to read %s\n", argv[1]);
      delete [] scriptString;
      fclose(input);
      return readError;
    }
    scriptString[stringLength] = 0;            // Terminate string with null
    fclose(input);

    PCB.pointer = scriptString;
    sort();



    return success;
  }


#ifndef CONVERT_CASE
#define CONVERT_CASE(c) (c)
#endif
#ifndef TAB_SPACING
#define TAB_SPACING 8
#endif

#define ag_rp_1() (PCB.pointer)

#define ag_rp_3(p) (String(p))

#define ag_rp_4(w) (w)

#define ag_rp_5(t) (map[t] = t)

#define ag_rp_6(a) (map[a] = String())

#define ag_rp_7(a) (map[a] = String())


#define READ_COUNTS 
#define WRITE_COUNTS 
#undef V
#define V(i,t) (*t (&(PCB).vs[(PCB).ssx + i]))
#undef VS
#define VS(i) (PCB).vs[(PCB).ssx + i]

#ifndef GET_CONTEXT
#define GET_CONTEXT CONTEXT = (PCB).input_context
#endif

typedef enum {
  ag_action_1,
  ag_action_2,
  ag_action_3,
  ag_action_4,
  ag_action_5,
  ag_action_6,
  ag_action_7,
  ag_action_8,
  ag_action_9,
  ag_action_10,
  ag_action_11,
  ag_action_12
} ag_parser_action;


#ifndef NULL_VALUE_INITIALIZER
#define NULL_VALUE_INITIALIZER = { 0 }
#endif

static sort_vs_type const ag_null_value NULL_VALUE_INITIALIZER;

static const unsigned char ag_rpx[] = {
    0,  1,  0,  0,  1,  0,  0,  0,  0,  0,  2,  3,  4,  5,  6
};
#define AG_TCV(x) (((int)(x) >= 0 && (int)(x) <= 255) ? ag_tcv[(x)] : 0)

static const unsigned char ag_tcv[] = {
   16,  0,  0,  0,  0,  0,  0,  0,  0,  3,  0,  0,  0,  0,  0,  0,  0,  0,
    0,  0,  0,  0,  0,  0,  0,  0,  0,  0,  0,  0,  0,  0,  3,  5,  5,  5,
    5,  5,  5,  5,  5,  5,  5,  5,  5,  5,  5,  5,  5,  5,  5,  5,  5,  5,
    5,  5,  5,  5,  5,  5, 10,  5, 11,  5,  5,  5,  5,  5,  5,  5,  5,  5,
    5,  5,  5,  5,  5,  5,  5,  5,  5,  5,  5,  5,  5,  5,  5,  5,  5,  5,
    5,  5,  5,  5,  5,  5,  5,  5,  5,  5,  5,  5,  5,  5,  5,  5,  5,  5,
    5,  5,  5,  5,  5,  5,  5,  5,  5,  5,  5,  5,  5,  5,  5,  5,  5,  5,
    5,  5,  0,  0,  0,  0,  0,  0,  0,  0,  0,  0,  0,  0,  0,  0,  0,  0,
    0,  0,  0,  0,  0,  0,  0,  0,  0,  0,  0,  0,  0,  0,  0,  0,  0,  0,
    0,  0,  0,  0,  0,  0,  0,  0,  0,  0,  0,  0,  0,  0,  0,  0,  0,  0,
    0,  0,  0,  0,  0,  0,  0,  0,  0,  0,  0,  0,  0,  0,  0,  0,  0,  0,
    0,  0,  0,  0,  0,  0,  0,  0,  0,  0,  0,  0,  0,  0,  0,  0,  0,  0,
    0,  0,  0,  0,  0,  0,  0,  0,  0,  0,  0,  0,  0,  0,  0,  0,  0,  0,
    0,  0,  0,  0,  0,  0,  0,  0,  0,  0,  0,  0,  0,  0,  0,  0,  0,  0,
    0,  0,  0,  0
};

#ifndef SYNTAX_ERROR
#define SYNTAX_ERROR fprintf(stderr,"%s, line %d, column %d\n", \
  (PCB).error_message, (PCB).line, (PCB).column)
#endif

#ifndef FIRST_LINE
#define FIRST_LINE 1
#endif

#ifndef FIRST_COLUMN
#define FIRST_COLUMN 1
#endif

#ifndef PARSER_STACK_OVERFLOW
#define PARSER_STACK_OVERFLOW {fprintf(stderr, \
   "\nParser stack overflow, line %d, column %d\n",\
   (PCB).line, (PCB).column);}
#endif

#ifndef REDUCTION_TOKEN_ERROR
#define REDUCTION_TOKEN_ERROR {fprintf(stderr, \
    "\nReduction token error, line %d, column %d\n", \
    (PCB).line, (PCB).column);}
#endif


#ifndef GET_INPUT
#define GET_INPUT ((PCB).input_code = getchar())
#endif


#ifndef AG_NEWLINE
#define AG_NEWLINE 10
#endif

#ifndef AG_RETURN
#define AG_RETURN 13
#endif

#ifndef AG_FORMFEED
#define AG_FORMFEED 12
#endif

#ifndef AG_TABCHAR
#define AG_TABCHAR 9
#endif

static void ag_track(void) {
  switch ((PCB).input_code) {
  case AG_NEWLINE:
    (PCB).column = 1, (PCB).line++;
  case AG_RETURN:
  case AG_FORMFEED:
    break;
  case AG_TABCHAR:
    (PCB).column += (TAB_SPACING) - ((PCB).column - 1) % (TAB_SPACING);
    break;
  default:
    (PCB).column++;
  }
  (PCB).read_flag = 1;
}


static void ag_prot(void) {
  int ag_k;
  ag_k = 128 - ++(PCB).btsx;
  if (ag_k <= (PCB).ssx) {
    (PCB).exit_flag = AG_STACK_ERROR_CODE;
    PARSER_STACK_OVERFLOW;
    return;
  }
  (PCB).bts[(PCB).btsx] = (PCB).sn;
  (PCB).bts[ag_k] = (PCB).ssx;
  (PCB).vs[ag_k] = (PCB).vs[(PCB).ssx];
  (PCB).ss[ag_k] = (PCB).ss[(PCB).ssx];
  (PCB).cs[ag_k] = (PCB).cs[(PCB).ssx];
}

static void ag_undo(void) {
  if ((PCB).drt == -1) return;
  while ((PCB).btsx) {
    int ag_k = 128 - (PCB).btsx;
    (PCB).sn = (PCB).bts[(PCB).btsx--];
    (PCB).ssx = (PCB).bts[ag_k];
    (PCB).vs[(PCB).ssx] = (PCB).vs[ag_k];
    (PCB).ss[(PCB).ssx] = (PCB).ss[ag_k];
    (PCB).cs[(PCB).ssx] = (PCB).cs[ag_k];
  }
  (PCB).token_number = (sort_token_type) (PCB).drt;
  (PCB).ssx = (PCB).dssx;
  (PCB).sn = (PCB).dsn;
  (PCB).drt = -1;
}


static const unsigned char ag_tstt[] = {
16,10,5,3,0,4,8,12,13,14,15,
3,0,
10,5,0,1,2,6,7,9,
16,10,5,3,0,4,8,12,
16,0,
5,3,0,4,8,
5,0,1,2,6,7,
5,0,
16,10,5,3,0,4,8,
10,0,9,
5,0,1,2,6,
5,3,0,2,6,
11,3,0,4,8,
11,0,

};


static unsigned const char ag_astt[71] = {
  8,8,8,1,7,1,1,1,0,1,1,9,5,1,1,7,1,2,1,1,1,5,8,8,1,7,1,1,3,3,7,8,1,7,1,1,1,
  7,1,2,1,2,9,5,5,5,5,1,7,1,2,1,4,2,1,7,1,2,1,1,9,5,2,1,8,1,7,1,1,2,7
};


static const unsigned char ag_pstt[] = {
4,2,2,1,0,1,2,3,0,3,4,
3,9,
5,7,2,8,1,7,9,6,
18,2,2,1,3,1,2,16,
19,4,
10,1,5,1,10,
7,6,8,1,7,14,
6,7,
8,8,8,11,8,11,10,
5,12,13,
7,10,12,1,7,
7,3,9,4,7,
13,11,12,11,13,
11,13,

};


static const unsigned char ag_sbt[] = {
     0,  11,  13,  21,  29,  31,  36,  42,  44,  51,  54,  59,  64,  69,
    71
};


static const unsigned char ag_sbe[] = {
     4,  12,  15,  25,  30,  33,  37,  43,  48,  52,  55,  61,  66,  70,  71
};


static const unsigned char ag_fl[] = {
  1,1,1,2,3,1,2,1,0,1,2,5,2,3,3,1,2,0,1,2
};

static const unsigned char ag_ptt[] = {
    0,  1,  4,  4,  1,  6,  6,  2,  8,  8,  7,  9, 12, 12, 12, 14, 14, 15,
   15, 13
};


static void ag_ra(void)
{
  switch(ag_rpx[(PCB).ag_ap]) {
    case 1: V(0,(unsigned char * *)) = ag_rp_1(); break;
    case 2: V(0,(String *)) = ag_rp_3(V(0,(unsigned char * *))); break;
    case 3: V(0,(String *)) = ag_rp_4(V(2,(unsigned char * *))); break;
    case 4: ag_rp_5(V(1,(String *))); break;
    case 5: ag_rp_6(V(2,(String *))); break;
    case 6: ag_rp_7(V(1,(String *))); break;
  }
}

#define TOKEN_NAMES sort_token_names
const char *const sort_token_names[17] = {
  "grammar",
  "words",
  "word",
  "blank",
  "",
  "char",
  "",
  "text",
  "",
  "address",
  "'<'",
  "'>'",
  "line",
  "grammar",
  "",
  "",
  "eof",

};

#ifndef MISSING_FORMAT
#define MISSING_FORMAT "Missing %s"
#endif
#ifndef UNEXPECTED_FORMAT
#define UNEXPECTED_FORMAT "Unexpected %s"
#endif
#ifndef UNNAMED_TOKEN
#define UNNAMED_TOKEN "input"
#endif


static void ag_diagnose(void) {
  int ag_snd = (PCB).sn;
  int ag_k = ag_sbt[ag_snd];

  if (*TOKEN_NAMES[ag_tstt[ag_k]] && ag_astt[ag_k + 1] == ag_action_8) {
    sprintf((PCB).ag_msg, MISSING_FORMAT, TOKEN_NAMES[ag_tstt[ag_k]]);
  }
  else if (ag_astt[ag_sbe[(PCB).sn]] == ag_action_8
          && (ag_k = (int) ag_sbe[(PCB).sn] + 1) == (int) ag_sbt[(PCB).sn+1] - 1
          && *TOKEN_NAMES[ag_tstt[ag_k]]) {
    sprintf((PCB).ag_msg, MISSING_FORMAT, TOKEN_NAMES[ag_tstt[ag_k]]);
  }
  else if ((PCB).token_number && *TOKEN_NAMES[(PCB).token_number]) {
    sprintf((PCB).ag_msg, UNEXPECTED_FORMAT, TOKEN_NAMES[(PCB).token_number]);
  }
  else if (isprint(((PCB).input_code)) && ((PCB).input_code) != '\\') {
    char buf[20];
    sprintf(buf, "\'%c\'", (char) ((PCB).input_code));
    sprintf((PCB).ag_msg, UNEXPECTED_FORMAT, buf);
  }
  else sprintf((PCB).ag_msg, UNEXPECTED_FORMAT, UNNAMED_TOKEN);
  (PCB).error_message = (PCB).ag_msg;


}
static int ag_action_1_r_proc(void);
static int ag_action_2_r_proc(void);
static int ag_action_3_r_proc(void);
static int ag_action_4_r_proc(void);
static int ag_action_1_s_proc(void);
static int ag_action_3_s_proc(void);
static int ag_action_1_proc(void);
static int ag_action_2_proc(void);
static int ag_action_3_proc(void);
static int ag_action_4_proc(void);
static int ag_action_5_proc(void);
static int ag_action_6_proc(void);
static int ag_action_7_proc(void);
static int ag_action_8_proc(void);
static int ag_action_9_proc(void);
static int ag_action_10_proc(void);
static int ag_action_11_proc(void);
static int ag_action_8_proc(void);


static int (*const  ag_r_procs_scan[])(void) = {
  ag_action_1_r_proc,
  ag_action_2_r_proc,
  ag_action_3_r_proc,
  ag_action_4_r_proc
};

static int (*const  ag_s_procs_scan[])(void) = {
  ag_action_1_s_proc,
  ag_action_2_r_proc,
  ag_action_3_s_proc,
  ag_action_4_r_proc
};

static int (*const  ag_gt_procs_scan[])(void) = {
  ag_action_1_proc,
  ag_action_2_proc,
  ag_action_3_proc,
  ag_action_4_proc,
  ag_action_5_proc,
  ag_action_6_proc,
  ag_action_7_proc,
  ag_action_8_proc,
  ag_action_9_proc,
  ag_action_10_proc,
  ag_action_11_proc,
  ag_action_8_proc
};


static int ag_action_10_proc(void) {
  int ag_t = (PCB).token_number;
  (PCB).btsx = 0, (PCB).drt = -1;
  do {
    ag_track();
    if ((PCB).read_flag) {
      (PCB).read_flag = 0;
      GET_INPUT;
    };
    (PCB).token_number = (sort_token_type) AG_TCV((PCB).input_code);
  } while ((PCB).token_number == (sort_token_type) ag_t);
  return 1;
}

static int ag_action_11_proc(void) {
  int ag_t = (PCB).token_number;

  (PCB).btsx = 0, (PCB).drt = -1;
  do {
    (*(int *) &(PCB).vs[(PCB).ssx]) = (PCB).input_code;
    (PCB).ssx--;
    ag_track();
    ag_ra();
    if ((PCB).exit_flag != AG_RUNNING_CODE) return 0;
    (PCB).ssx++;
    if ((PCB).read_flag) {
      (PCB).read_flag = 0;
      GET_INPUT;
    };
    (PCB).token_number = (sort_token_type) AG_TCV((PCB).input_code);
  }
  while ((PCB).token_number == (sort_token_type) ag_t);
  return 1;
}

static int ag_action_3_r_proc(void) {
  int ag_sd = ag_fl[(PCB).ag_ap] - 1;
  if (ag_sd) (PCB).sn = (PCB).ss[(PCB).ssx -= ag_sd];
  (PCB).btsx = 0, (PCB).drt = -1;
  (PCB).reduction_token = (sort_token_type) ag_ptt[(PCB).ag_ap];
  ag_ra();
  return (PCB).exit_flag == AG_RUNNING_CODE;
}

static int ag_action_3_s_proc(void) {
  int ag_sd = ag_fl[(PCB).ag_ap] - 1;
  if (ag_sd) (PCB).sn = (PCB).ss[(PCB).ssx -= ag_sd];
  (PCB).btsx = 0, (PCB).drt = -1;
  (PCB).reduction_token = (sort_token_type) ag_ptt[(PCB).ag_ap];
  ag_ra();
  return (PCB).exit_flag == AG_RUNNING_CODE;
}

static int ag_action_4_r_proc(void) {
  int ag_sd = ag_fl[(PCB).ag_ap] - 1;
  if (ag_sd) (PCB).sn = (PCB).ss[(PCB).ssx -= ag_sd];
  (PCB).reduction_token = (sort_token_type) ag_ptt[(PCB).ag_ap];
  return 1;
}

static int ag_action_2_proc(void) {
  (PCB).btsx = 0, (PCB).drt = -1;
  if ((PCB).ssx >= 128) {
    (PCB).exit_flag = AG_STACK_ERROR_CODE;
    PARSER_STACK_OVERFLOW;
  }
  (*(int *) &(PCB).vs[(PCB).ssx]) = (PCB).input_code;
  GET_CONTEXT;
  (PCB).ss[(PCB).ssx] = (PCB).sn;
  (PCB).ssx++;
  (PCB).sn = (PCB).ag_ap;
  ag_track();
  return 0;
}

static int ag_action_9_proc(void) {
  if ((PCB).drt == -1) {
    (PCB).drt=(PCB).token_number;
    (PCB).dssx=(PCB).ssx;
    (PCB).dsn=(PCB).sn;
  }
  ag_prot();
  (PCB).vs[(PCB).ssx] = ag_null_value;
  GET_CONTEXT;
  (PCB).ss[(PCB).ssx] = (PCB).sn;
  (PCB).ssx++;
  (PCB).sn = (PCB).ag_ap;
  return (PCB).exit_flag == AG_RUNNING_CODE;
}

static int ag_action_2_r_proc(void) {
  (PCB).ssx++;
  (PCB).sn = (PCB).ag_ap;
  return 0;
}

static int ag_action_7_proc(void) {
  --(PCB).ssx;
  (PCB).exit_flag = AG_SUCCESS_CODE;
  return 0;
}

static int ag_action_1_proc(void) {
  ag_track();
  (PCB).exit_flag = AG_SUCCESS_CODE;
  return 0;
}

static int ag_action_1_r_proc(void) {
  (PCB).exit_flag = AG_SUCCESS_CODE;
  return 0;
}

static int ag_action_1_s_proc(void) {
  (PCB).exit_flag = AG_SUCCESS_CODE;
  return 0;
}

static int ag_action_4_proc(void) {
  int ag_sd = ag_fl[(PCB).ag_ap] - 1;
  (PCB).reduction_token = (sort_token_type) ag_ptt[(PCB).ag_ap];
  (PCB).btsx = 0, (PCB).drt = -1;
  (*(int *) &(PCB).vs[(PCB).ssx]) = (PCB).input_code;
  if (ag_sd) (PCB).sn = (PCB).ss[(PCB).ssx -= ag_sd];
  else GET_CONTEXT;
  (PCB).ss[(PCB).ssx] = (PCB).sn;
  ag_track();
  while ((PCB).exit_flag == AG_RUNNING_CODE) {
    unsigned ag_t1 = ag_sbe[(PCB).sn] + 1;
    unsigned ag_t2 = ag_sbt[(PCB).sn+1] - 1;
    do {
      unsigned ag_tx = (ag_t1 + ag_t2)/2;
      if (ag_tstt[ag_tx] < (unsigned char)(PCB).reduction_token) ag_t1 = ag_tx + 1;
      else ag_t2 = ag_tx;
    } while (ag_t1 < ag_t2);
    (PCB).ag_ap = ag_pstt[ag_t1];
    if ((ag_s_procs_scan[ag_astt[ag_t1]])() == 0) break;
  }
  return 0;
}

static int ag_action_3_proc(void) {
  int ag_sd = ag_fl[(PCB).ag_ap] - 1;
  (PCB).btsx = 0, (PCB).drt = -1;
  (*(int *) &(PCB).vs[(PCB).ssx]) = (PCB).input_code;
  if (ag_sd) (PCB).sn = (PCB).ss[(PCB).ssx -= ag_sd];
  else GET_CONTEXT;
  (PCB).ss[(PCB).ssx] = (PCB).sn;
  ag_track();
  (PCB).reduction_token = (sort_token_type) ag_ptt[(PCB).ag_ap];
  ag_ra();
  while ((PCB).exit_flag == AG_RUNNING_CODE) {
    unsigned ag_t1 = ag_sbe[(PCB).sn] + 1;
    unsigned ag_t2 = ag_sbt[(PCB).sn+1] - 1;
    do {
      unsigned ag_tx = (ag_t1 + ag_t2)/2;
      if (ag_tstt[ag_tx] < (unsigned char)(PCB).reduction_token) ag_t1 = ag_tx + 1;
      else ag_t2 = ag_tx;
    } while (ag_t1 < ag_t2);
    (PCB).ag_ap = ag_pstt[ag_t1];
    if ((ag_s_procs_scan[ag_astt[ag_t1]])() == 0) break;
  }
  return 0;
}

static int ag_action_8_proc(void) {
  ag_undo();
  (PCB).exit_flag = AG_SYNTAX_ERROR_CODE;
  ag_diagnose();
  SYNTAX_ERROR;
  ag_track();
  return (PCB).exit_flag == AG_RUNNING_CODE;
}

static int ag_action_5_proc(void) {
  int ag_sd = ag_fl[(PCB).ag_ap];
  (PCB).btsx = 0, (PCB).drt = -1;
  if (ag_sd) (PCB).sn = (PCB).ss[(PCB).ssx -= ag_sd];
  else {
    GET_CONTEXT;
    (PCB).ss[(PCB).ssx] = (PCB).sn;
  }
  (PCB).reduction_token = (sort_token_type) ag_ptt[(PCB).ag_ap];
  ag_ra();
  while ((PCB).exit_flag == AG_RUNNING_CODE) {
    unsigned ag_t1 = ag_sbe[(PCB).sn] + 1;
    unsigned ag_t2 = ag_sbt[(PCB).sn+1] - 1;
    do {
      unsigned ag_tx = (ag_t1 + ag_t2)/2;
      if (ag_tstt[ag_tx] < (unsigned char)(PCB).reduction_token) ag_t1 = ag_tx + 1;
      else ag_t2 = ag_tx;
    } while (ag_t1 < ag_t2);
    (PCB).ag_ap = ag_pstt[ag_t1];
    if ((ag_r_procs_scan[ag_astt[ag_t1]])() == 0) break;
  }
  return (PCB).exit_flag == AG_RUNNING_CODE;
}

static int ag_action_6_proc(void) {
  int ag_sd = ag_fl[(PCB).ag_ap];
  (PCB).reduction_token = (sort_token_type) ag_ptt[(PCB).ag_ap];
  if ((PCB).drt == -1) {
    (PCB).drt=(PCB).token_number;
    (PCB).dssx=(PCB).ssx;
    (PCB).dsn=(PCB).sn;
  }
  if (ag_sd) {
    (PCB).sn = (PCB).ss[(PCB).ssx -= ag_sd];
  }
  else {
    ag_prot();
    (PCB).vs[(PCB).ssx] = ag_null_value;
    GET_CONTEXT;
    (PCB).ss[(PCB).ssx] = (PCB).sn;
  }
  while ((PCB).exit_flag == AG_RUNNING_CODE) {
    unsigned ag_t1 = ag_sbe[(PCB).sn] + 1;
    unsigned ag_t2 = ag_sbt[(PCB).sn+1] - 1;
    do {
      unsigned ag_tx = (ag_t1 + ag_t2)/2;
      if (ag_tstt[ag_tx] < (unsigned char)(PCB).reduction_token) ag_t1 = ag_tx + 1;
      else ag_t2 = ag_tx;
    } while (ag_t1 < ag_t2);
    (PCB).ag_ap = ag_pstt[ag_t1];
    if ((ag_r_procs_scan[ag_astt[ag_t1]])() == 0) break;
  }
  return (PCB).exit_flag == AG_RUNNING_CODE;
}


void init_sort(void) {
  (PCB).read_flag = 1;
  (PCB).ss[0] = (PCB).sn = (PCB).ssx = 0;
  (PCB).exit_flag = AG_RUNNING_CODE;
  (PCB).line = FIRST_LINE;
  (PCB).column = FIRST_COLUMN;
  (PCB).btsx = 0, (PCB).drt = -1;
}

void sort(void) {
  init_sort();
  (PCB).exit_flag = AG_RUNNING_CODE;
  while ((PCB).exit_flag == AG_RUNNING_CODE) {
    unsigned ag_t1 = ag_sbt[(PCB).sn];
    if (ag_tstt[ag_t1]) {
      unsigned ag_t2 = ag_sbe[(PCB).sn] - 1;
      if ((PCB).read_flag) {
        (PCB).read_flag = 0;
        GET_INPUT;
      };
      (PCB).token_number = (sort_token_type) AG_TCV((PCB).input_code);
      do {
        unsigned ag_tx = (ag_t1 + ag_t2)/2;
        if (ag_tstt[ag_tx] > (unsigned char)(PCB).token_number)
          ag_t1 = ag_tx + 1;
        else ag_t2 = ag_tx;
      } while (ag_t1 < ag_t2);
      if (ag_tstt[ag_t1] != (unsigned char)(PCB).token_number)
        ag_t1 = ag_sbe[(PCB).sn];
    }
    (PCB).ag_ap = ag_pstt[ag_t1];
    (ag_gt_procs_scan[ag_astt[ag_t1]])();
  }
}