Head

GCC Code Coverage Report

Directory:	../src/		Exec	Total	Coverage
File:	/home/joels/Current/lispbm/src/symrepr.c	Lines:	127	159	79.9 %
Date:	2024-12-26 17:59:19	Branches:	45	73	61.6 %


/*
    Copyright 2018, 2021, 2022, 2024 Joel Svensson  svenssonjoel@yahoo.se

    This program 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 of the License, or
    (at your option) any later version.

    This program 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 this program.  If not, see <http://www.gnu.org/licenses/>.
*/

#include <stdint.h>
#include <stdio.h>
#include <string.h>
#include <stdlib.h>
#include <inttypes.h>


#include <lbm_memory.h>
#include <heap.h>
#include "symrepr.h"
#include "extensions.h"
#include "lbm_utils.h"

#define NUM_SPECIAL_SYMBOLS (sizeof(special_symbols) / sizeof(special_sym))
#define NAME   0
#define ID     1
#define NEXT   2

typedef struct {
  const char *name;
  const lbm_uint id;
} special_sym;

special_sym const special_symbols[] =  {
  {"nil"        , SYM_NIL},
  {"quote"      , SYM_QUOTE},
  {"t"          , SYM_TRUE},
  {"if"         , SYM_IF},
  {"cond"       , SYM_COND},
  {"lambda"     , SYM_LAMBDA},
  {"closure"    , SYM_CLOSURE},
  {"let"        , SYM_LET},
  {"define"     , SYM_DEFINE},
  {"progn"      , SYM_PROGN},
  {"read"       , SYM_READ},
  {"read-program" , SYM_READ_PROGRAM},
  {"read-eval-program", SYM_READ_AND_EVAL_PROGRAM},
  {"match"        , SYM_MATCH},
  {"_"            , SYM_DONTCARE},
  {"send"         , SYM_SEND},
  {"recv"         , SYM_RECEIVE},
  {"recv-to"      , SYM_RECEIVE_TIMEOUT},
  {"macro"        , SYM_MACRO},
  {"call-cc"      , SYM_CALLCC},
  {"continuation" , SYM_CONT},
  {"var"          , SYM_PROGN_VAR},
  {"timeout"      , SYM_TIMEOUT},

  {"set"          , SYM_SETVAR},
  {"setq"         , SYM_SETQ},
  {"move-to-flash", SYM_MOVE_TO_FLASH},
  {"exit-ok"      , SYM_EXIT_OK},
  {"exit-error"   , SYM_EXIT_ERROR},
  {"map"          , SYM_MAP},
  {"reverse"      , SYM_REVERSE},
  {"flatten"      , SYM_FLATTEN},
  {"unflatten"    , SYM_UNFLATTEN},
  {"kill"         , SYM_KILL},
  {"sleep"        , SYM_SLEEP},
  {"merge"        , SYM_MERGE},
  {"sort"         , SYM_SORT},
  {"gc"           , SYM_PERFORM_GC},
  {"loop"         , SYM_LOOP},
  {"trap"         , SYM_TRAP},
  {"rest-args"    , SYM_REST_ARGS},
  {"rotate"       , SYM_ROTATE},

  // pattern matching
  {"?"          , SYM_MATCH_ANY},

  // Error symbols with parsable names
  {"no_match"           , SYM_NO_MATCH},
  {"read_error"         , SYM_RERROR},
  {"type_error"         , SYM_TERROR},
  {"eval_error"         , SYM_EERROR},
  {"out_of_memory"      , SYM_MERROR},
  {"fatal_error"        , SYM_FATAL_ERROR},
  {"out_of_stack"       , SYM_STACK_ERROR},
  {"division_by_zero"   , SYM_DIVZERO},
  {"variable_not_bound" , SYM_NOT_FOUND},
  {"flash_full"         , SYM_ERROR_FLASH_HEAP_FULL},

  // Special symbols with unparsable names
  {"$barray"         , SYM_ARRAY_TYPE},
  {"$raw_i"          , SYM_RAW_I_TYPE},
  {"$raw_u"          , SYM_RAW_U_TYPE},
  {"$raw_f"          , SYM_RAW_F_TYPE},
  {"$ind_i"          , SYM_IND_I_TYPE},
  {"$ind_u"          , SYM_IND_U_TYPE},
  {"$ind_f"          , SYM_IND_F_TYPE},
  {"$channel"        , SYM_CHANNEL_TYPE},
  {"$recovered"      , SYM_RECOVERED},
  {"$placeholder"    , SYM_PLACEHOLDER},
  {"$custom"         , SYM_CUSTOM_TYPE},
  {"$array"          , SYM_LISPARRAY_TYPE},
  {"$nonsense"       , SYM_NONSENSE},
  {"$dm-array"       , SYM_DEFRAG_ARRAY_TYPE},
  {"$dm"             , SYM_DEFRAG_MEM_TYPE},

  // tokenizer symbols with unparsable names
  {"[openpar]"        , SYM_OPENPAR},
  {"[closepar]"       , SYM_CLOSEPAR},
  {"[backquote]"      , SYM_BACKQUOTE},
  {"[comma]"          , SYM_COMMA},
  {"[commaat]"        , SYM_COMMAAT},
  {"[dot]"            , SYM_DOT},
  {"[done]"           , SYM_TOKENIZER_DONE},
  {"[quote_it]"       , SYM_QUOTE_IT},
  {"[colon]"          , SYM_COLON},
  {"[wait]"           , SYM_TOKENIZER_WAIT},
  {"[openbrack]"      , SYM_OPENBRACK},
  {"[closebrack]"     , SYM_CLOSEBRACK},
  {"[rerror]"         , SYM_TOKENIZER_RERROR},
  {"[appcont]"        , SYM_APP_CONT},

  // special symbols with parseable names
  {"type-list"        , SYM_TYPE_LIST},
  {"type-i"           , SYM_TYPE_I},
  {"type-u"           , SYM_TYPE_U},
  {"type-float"       , SYM_TYPE_FLOAT},
  {"type-i32"         , SYM_TYPE_I32},
  {"type-u32"         , SYM_TYPE_U32},
  {"type-double"      , SYM_TYPE_DOUBLE},
  {"type-i64"         , SYM_TYPE_I64},
  {"type-u64"         , SYM_TYPE_U64},
  {"type-array"       , SYM_TYPE_ARRAY},
  {"type-symbol"      , SYM_TYPE_SYMBOL},
  {"type-char"        , SYM_TYPE_CHAR},
  {"type-byte"        , SYM_TYPE_BYTE},
  {"type-channel"     , SYM_TYPE_CHANNEL},
  {"type-lisparray"   , SYM_TYPE_LISPARRAY},
  {"type-dm"          , SYM_TYPE_DEFRAG_MEM},
  {"type-custom"      , SYM_TYPE_CUSTOM},

  // Fundamental operations
  {"+"                , SYM_ADD},
  {"-"                , SYM_SUB},
  {"*"                , SYM_MUL},
  {"/"                , SYM_DIV},
  {"//"               , SYM_INT_DIV},
  {"mod"              , SYM_MOD},
  {"="                , SYM_NUMEQ},
  {"!="               , SYM_NUM_NOT_EQ},
  {"<"                , SYM_LT},
  {">"                , SYM_GT},
  {"<="               , SYM_LEQ},
  {">="               , SYM_GEQ},
  {"eval"             , SYM_EVAL},
  {"eval-program"     , SYM_EVAL_PROGRAM},
  {"and"              , SYM_AND},
  {"or"               , SYM_OR},
  {"not"              , SYM_NOT},
  {"yield"            , SYM_YIELD},
  {"wait"             , SYM_WAIT},
  {"spawn"            , SYM_SPAWN},
  {"atomic"           , SYM_ATOMIC},
  {"self"             , SYM_SELF},
  {"spawn-trap"       , SYM_SPAWN_TRAP},
  {"set-mailbox-size" , SYM_SET_MAILBOX_SIZE},
  {"eq"               , SYM_EQ},
  {"not-eq"           , SYM_NOT_EQ},
  {"car"              , SYM_CAR},
  {"cdr"              , SYM_CDR},
  {"cons"             , SYM_CONS},
  {"list"             , SYM_LIST},
  {"append"           , SYM_APPEND},
  {"undefine"         , SYM_UNDEFINE},
  {"bufcreate"        , SYM_BYTEARRAY_CREATE},
  {"type-of"          , SYM_TYPE_OF},
  {"sym2str"          , SYM_SYMBOL_TO_STRING},
  {"str2sym"          , SYM_STRING_TO_SYMBOL},
  {"sym2u"            , SYM_SYMBOL_TO_UINT},
  {"u2sym"            , SYM_UINT_TO_SYMBOL},
  {"setcar"           , SYM_SET_CAR},
  {"setcdr"           , SYM_SET_CDR},
  {"setix"            , SYM_SET_IX},
  {"length"           , SYM_LIST_LENGTH},
  {"range"            , SYM_RANGE},

  {"assoc"          , SYM_ASSOC}, // lookup an association
  {"cossa"          , SYM_COSSA}, // lookup an association "backwards"
  {"acons"          , SYM_ACONS}, // Add to alist
  {"setassoc"       , SYM_SET_ASSOC}, // Change association

  {"shl"            , SYM_SHL},
  {"shr"            , SYM_SHR},
  {"bitwise-and"    , SYM_BITWISE_AND},
  {"bitwise-or"     , SYM_BITWISE_OR},
  {"bitwise-xor"    , SYM_BITWISE_XOR},
  {"bitwise-not"    , SYM_BITWISE_NOT},

  {"custom-destruct", SYM_CUSTOM_DESTRUCT},

  {"to-i"           , SYM_TO_I},
  {"to-i32"         , SYM_TO_I32},
  {"to-u"           , SYM_TO_U},
  {"to-u32"         , SYM_TO_U32},
  {"to-float"       , SYM_TO_FLOAT},
  {"to-i64"         , SYM_TO_I64},
  {"to-u64"         , SYM_TO_U64},
  {"to-double"      , SYM_TO_DOUBLE},
  {"to-byte"        , SYM_TO_BYTE},

  {"event-register-handler", SYM_REG_EVENT_HANDLER},
  {"take"           , SYM_TAKE},
  {"drop"           , SYM_DROP},
  {"mkarray"        , SYM_MKARRAY},
  {"array-to-list"  , SYM_ARRAY_TO_LIST},
  {"list-to-array"  , SYM_LIST_TO_ARRAY},

  {"dm-create"      , SYM_DM_CREATE},
  {"dm-alloc"       , SYM_DM_ALLOC},

  {"list?"          , SYM_IS_LIST},
  {"number?"        , SYM_IS_NUMBER},

  // fast access in list
  {"ix"             , SYM_IX},

  // aliases
  {"first"          , SYM_CAR},
  {"rest"           , SYM_CDR},
  {"fn"             , SYM_LAMBDA},
  {"def"            , SYM_DEFINE},
  {"true"           , SYM_TRUE},
  {"false"          , SYM_NIL},
  {"setvar"         , SYM_SETVAR},
  {"type-f32"       , SYM_TYPE_FLOAT},
  {"type-f64"       , SYM_TYPE_DOUBLE},
  {"array-create"   , SYM_BYTEARRAY_CREATE},
  {"identity"       , SYM_IDENTITY},
};

static lbm_uint *symlist = NULL;
static lbm_uint next_symbol_id = RUNTIME_SYMBOLS_START;
static lbm_uint symbol_table_size_list = 0;
static lbm_uint symbol_table_size_list_flash = 0;
static lbm_uint symbol_table_size_strings = 0;
static lbm_uint symbol_table_size_strings_flash = 0;

lbm_value symbol_x = ENC_SYM_NIL;
lbm_value symbol_y = ENC_SYM_NIL;

int lbm_symrepr_init(void) {
  symlist = NULL;
  next_symbol_id = RUNTIME_SYMBOLS_START;
  symbol_table_size_list = 0;
  symbol_table_size_list_flash = 0;
  symbol_table_size_strings = 0;
  symbol_table_size_strings_flash = 0;

  lbm_uint x = 0;
  lbm_uint y = 0;
  lbm_add_symbol("x", &x);
  lbm_add_symbol("y", &y);
  symbol_x = lbm_enc_sym(x);
  symbol_y = lbm_enc_sym(y);
  return 1;
}

void lbm_symrepr_name_iterator(symrepr_name_iterator_fun f) {

  lbm_uint *curr = symlist;
  while (curr) {
    f((const char *)curr[NAME]);
    curr = (lbm_uint *)curr[NEXT];
  }
}

const char *lookup_symrepr_name_memory(lbm_uint id) {

  lbm_uint *curr = symlist;
  while (curr) {
    if (id == curr[ID]) {
      return (const char *)curr[NAME];
    }
    curr = (lbm_uint*)curr[NEXT];
  }
  return NULL;
}

// Lookup symbol name given a symbol id
const char *lbm_get_name_by_symbol(lbm_uint id) {
  lbm_uint sym_kind = SYMBOL_KIND(id);
  switch (sym_kind) {
  case SYMBOL_KIND_SPECIAL:  /* fall through */
  case SYMBOL_KIND_FUNDAMENTAL:
  case SYMBOL_KIND_APPFUN:
    for (unsigned int i = 0; i < NUM_SPECIAL_SYMBOLS; i ++) {
      if (id == special_symbols[i].id) {
        return (special_symbols[i].name);
      }
    }
    return NULL;
    break;
  case SYMBOL_KIND_EXTENSION: {
    lbm_uint ext_id = id - EXTENSION_SYMBOLS_START;
    if (ext_id < lbm_get_max_extensions()) {
      return extension_table[ext_id].name;
    }
    return NULL;
  } break;
  default:
    return lookup_symrepr_name_memory(id);
  }
}

lbm_uint *lbm_get_symbol_list_entry_by_name(char *name) {
  lbm_uint *curr = symlist;
  while (curr) {
    char *str = (char*)curr[NAME];
    if (str_eq(name, str)) {
      return (lbm_uint *)curr;
    }
    curr = (lbm_uint*)curr[NEXT];
  }
  return NULL;
}

// Lookup symbol id given symbol name
int lbm_get_symbol_by_name(char *name, lbm_uint* id) {

  // loop through special symbols
  for (unsigned int i = 0; i < NUM_SPECIAL_SYMBOLS; i ++) {
    if (str_eq(name, (char *)special_symbols[i].name)) {
      *id = special_symbols[i].id;
      return 1;
    }
   }

  // loop through extensions
  for (unsigned int i = 0; i < lbm_get_max_extensions(); i ++) {
    if (extension_table[i].name && str_eq(name, extension_table[i].name)) {
      *id = EXTENSION_SYMBOLS_START + i;
      return 1;
    }
  }

  lbm_uint *curr = symlist;
  while (curr) {
    char *str = (char*)curr[NAME];
    if (str_eq(name, str)) {
      *id = curr[ID];
      return 1;
    }
    curr = (lbm_uint*)curr[NEXT];
  }
  return 0;
}

extern lbm_flash_status lbm_write_const_array_padded(uint8_t *data, lbm_uint n, lbm_uint *res);


static bool store_symbol_name_flash(char *name, lbm_uint *res) {
  size_t n = strlen(name) + 1;
  if (n == 1) return 0; // failure if empty symbol

  lbm_uint alloc_size;
  if (n % sizeof(lbm_uint) == 0) {
    alloc_size = n/(sizeof(lbm_uint));
  } else {
    alloc_size = (n/(sizeof(lbm_uint))) + 1;
  }

  lbm_uint symbol_addr = 0;
  lbm_flash_status s = lbm_write_const_array_padded((uint8_t*)name, n, &symbol_addr);
  if (s != LBM_FLASH_WRITE_OK || symbol_addr == 0) {
    return false;
  }
  symbol_table_size_strings_flash += alloc_size;
  *res = symbol_addr;
  return true;
}

// Symbol table
// non-const name copied into symbol-table-entry:
// Entry
//   |
//   [name-ptr | symbol-id | next-ptr | name n-bytes]
//       |                             /
//        ------------points here -----
//
// const name referenced by symbol-table-entry:
// Entry
//   |
//   [name-ptr | symbol-id | next-ptr]
//       |
//        [name n-bytes]
//
static bool add_symbol_to_symtab(char* name, lbm_uint id) {
  bool r = false;
  size_t n = strlen(name) + 1;
  if (n > 1 && n <= 257) {
    size_t alloc_size = n + (3 * sizeof(lbm_uint));
    char *storage = lbm_malloc(alloc_size);
    if (storage) {
      memcpy(storage + (3 * sizeof(lbm_uint)), name, n);
      lbm_uint *m = (lbm_uint*)storage;

      symbol_table_size_list += 3 * sizeof(lbm_uint); // Bytes
      symbol_table_size_strings += n; // Bytes
      m[NAME] = (lbm_uint)&m[3];
      m[NEXT] = (lbm_uint) symlist;
      symlist = m;
      m[ID] =id;
      r = true;
    }
  }
  return r;
}

static bool add_symbol_to_symtab_flash(lbm_uint name, lbm_uint id) {
  lbm_uint entry[3];
  entry[NAME] = name;
  entry[NEXT] = (lbm_uint) symlist;
  entry[ID]   = id;
  lbm_uint entry_addr = 0;
  if (lbm_write_const_raw(entry,3, &entry_addr) == LBM_FLASH_WRITE_OK) {
    symlist = (lbm_uint*)entry_addr;
    symbol_table_size_list_flash += 3;
    return true;
  }
  return false;
}

int lbm_add_symbol_base(char *name, lbm_uint *id, bool flash) {
  lbm_uint symbol_name_storage;
  if (flash) {
    if (!store_symbol_name_flash(name, &symbol_name_storage)) return 0;
    if (!add_symbol_to_symtab_flash(symbol_name_storage, next_symbol_id)) return 0;
  } else {
    if (!add_symbol_to_symtab(name, next_symbol_id)) {
      return 0;
    }
  }
  *id = next_symbol_id ++;
  return 1;
}

int lbm_add_symbol(char *name, lbm_uint* id) {
  lbm_uint sym_id;
  if (!lbm_get_symbol_by_name(name, &sym_id)) {
    return lbm_add_symbol_base(name, id, false);
  } else {
    *id = sym_id;
    return 1;
  }
  return 0;
}

int lbm_add_symbol_flash(char *name, lbm_uint* id) {
  lbm_uint sym_id;
  if (!lbm_get_symbol_by_name(name, &sym_id)) {
    return lbm_add_symbol_base(name, id, true);
  } else {
    *id = sym_id;
    return 1;
  }
  return 0;
}

int lbm_add_symbol_const_base(char *name, lbm_uint* id) {
  lbm_uint *m = lbm_memory_allocate(3);
  if (m == NULL) return 0;
  symbol_table_size_list += 3;
  m[NAME] = (lbm_uint) name;
  m[NEXT] = (lbm_uint) symlist;
  symlist = m;
  m[ID] = next_symbol_id;
  *id = next_symbol_id ++;
  return 1;
}

int lbm_add_symbol_const(char *name, lbm_uint* id) {
  lbm_uint sym_id;
  if (!lbm_get_symbol_by_name(name, &sym_id)) {
    return lbm_add_symbol_const_base(name, id);
  } else {
    *id = sym_id;
    return 1;
  }
  return 0;
}

int lbm_str_to_symbol(char *name, lbm_uint *sym_id) {
  if (lbm_get_symbol_by_name(name, sym_id))
    return 1;
  else if (lbm_add_symbol(name, sym_id))
    return 1;
  return 0;
}

lbm_uint lbm_get_symbol_table_size(void) {
  return (symbol_table_size_list +symbol_table_size_strings);
}

lbm_uint lbm_get_symbol_table_size_flash(void) {
  return (symbol_table_size_list_flash +
          symbol_table_size_strings_flash) * sizeof(lbm_uint);
}

lbm_uint lbm_get_symbol_table_size_names(void) {
  return symbol_table_size_strings; // Bytes already
}

lbm_uint lbm_get_symbol_table_size_names_flash(void) {
  return symbol_table_size_strings_flash * sizeof(lbm_uint);
}

bool lbm_symbol_in_flash(char *str) {
  return !lbm_memory_ptr_inside((lbm_uint*)str);
}

bool lbm_symbol_list_entry_in_flash(char *str) {
  lbm_uint *entry = lbm_get_symbol_list_entry_by_name(str);
  return (entry == NULL || !lbm_memory_ptr_inside(entry));
}


Generated by: GCOVR (Version 4.2)

Line	Branch	Exec	Source
1			/*
2			Copyright 2018, 2021, 2022, 2024 Joel Svensson svenssonjoel@yahoo.se
3
4			This program is free software: you can redistribute it and/or modify
5			it under the terms of the GNU General Public License as published by
6			the Free Software Foundation, either version 3 of the License, or
7			(at your option) any later version.
8
9			This program is distributed in the hope that it will be useful,
10			but WITHOUT ANY WARRANTY; without even the implied warranty of
11			MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
12			GNU General Public License for more details.
13
14			You should have received a copy of the GNU General Public License
15			along with this program. If not, see <http://www.gnu.org/licenses/>.
16			*/
17
18			#include <stdint.h>
19			#include <stdio.h>
20			#include <string.h>
21			#include <stdlib.h>
22			#include <inttypes.h>
23
24
25			#include <lbm_memory.h>
26			#include <heap.h>
27			#include "symrepr.h"
28			#include "extensions.h"
29			#include "lbm_utils.h"
30
31			#define NUM_SPECIAL_SYMBOLS (sizeof(special_symbols) / sizeof(special_sym))
32			#define NAME 0
33			#define ID 1
34			#define NEXT 2
35
36			typedef struct {
37			const char *name;
38			const lbm_uint id;
39			} special_sym;
40
41			special_sym const special_symbols[] = {
42			{"nil" , SYM_NIL},
43			{"quote" , SYM_QUOTE},
44			{"t" , SYM_TRUE},
45			{"if" , SYM_IF},
46			{"cond" , SYM_COND},
47			{"lambda" , SYM_LAMBDA},
48			{"closure" , SYM_CLOSURE},
49			{"let" , SYM_LET},
50			{"define" , SYM_DEFINE},
51			{"progn" , SYM_PROGN},
52			{"read" , SYM_READ},
53			{"read-program" , SYM_READ_PROGRAM},
54			{"read-eval-program", SYM_READ_AND_EVAL_PROGRAM},
55			{"match" , SYM_MATCH},
56			{"_" , SYM_DONTCARE},
57			{"send" , SYM_SEND},
58			{"recv" , SYM_RECEIVE},
59			{"recv-to" , SYM_RECEIVE_TIMEOUT},
60			{"macro" , SYM_MACRO},
61			{"call-cc" , SYM_CALLCC},
62			{"continuation" , SYM_CONT},
63			{"var" , SYM_PROGN_VAR},
64			{"timeout" , SYM_TIMEOUT},
65
66			{"set" , SYM_SETVAR},
67			{"setq" , SYM_SETQ},
68			{"move-to-flash", SYM_MOVE_TO_FLASH},
69			{"exit-ok" , SYM_EXIT_OK},
70			{"exit-error" , SYM_EXIT_ERROR},
71			{"map" , SYM_MAP},
72			{"reverse" , SYM_REVERSE},
73			{"flatten" , SYM_FLATTEN},
74			{"unflatten" , SYM_UNFLATTEN},
75			{"kill" , SYM_KILL},
76			{"sleep" , SYM_SLEEP},
77			{"merge" , SYM_MERGE},
78			{"sort" , SYM_SORT},
79			{"gc" , SYM_PERFORM_GC},
80			{"loop" , SYM_LOOP},
81			{"trap" , SYM_TRAP},
82			{"rest-args" , SYM_REST_ARGS},
83			{"rotate" , SYM_ROTATE},
84
85			// pattern matching
86			{"?" , SYM_MATCH_ANY},
87
88			// Error symbols with parsable names
89			{"no_match" , SYM_NO_MATCH},
90			{"read_error" , SYM_RERROR},
91			{"type_error" , SYM_TERROR},
92			{"eval_error" , SYM_EERROR},
93			{"out_of_memory" , SYM_MERROR},
94			{"fatal_error" , SYM_FATAL_ERROR},
95			{"out_of_stack" , SYM_STACK_ERROR},
96			{"division_by_zero" , SYM_DIVZERO},
97			{"variable_not_bound" , SYM_NOT_FOUND},
98			{"flash_full" , SYM_ERROR_FLASH_HEAP_FULL},
99
100			// Special symbols with unparsable names
101			{"$barray" , SYM_ARRAY_TYPE},
102			{"$raw_i" , SYM_RAW_I_TYPE},
103			{"$raw_u" , SYM_RAW_U_TYPE},
104			{"$raw_f" , SYM_RAW_F_TYPE},
105			{"$ind_i" , SYM_IND_I_TYPE},
106			{"$ind_u" , SYM_IND_U_TYPE},
107			{"$ind_f" , SYM_IND_F_TYPE},
108			{"$channel" , SYM_CHANNEL_TYPE},
109			{"$recovered" , SYM_RECOVERED},
110			{"$placeholder" , SYM_PLACEHOLDER},
111			{"$custom" , SYM_CUSTOM_TYPE},
112			{"$array" , SYM_LISPARRAY_TYPE},
113			{"$nonsense" , SYM_NONSENSE},
114			{"$dm-array" , SYM_DEFRAG_ARRAY_TYPE},
115			{"$dm" , SYM_DEFRAG_MEM_TYPE},
116
117			// tokenizer symbols with unparsable names
118			{"[openpar]" , SYM_OPENPAR},
119			{"[closepar]" , SYM_CLOSEPAR},
120			{"[backquote]" , SYM_BACKQUOTE},
121			{"[comma]" , SYM_COMMA},
122			{"[commaat]" , SYM_COMMAAT},
123			{"[dot]" , SYM_DOT},
124			{"[done]" , SYM_TOKENIZER_DONE},
125			{"[quote_it]" , SYM_QUOTE_IT},
126			{"[colon]" , SYM_COLON},
127			{"[wait]" , SYM_TOKENIZER_WAIT},
128			{"[openbrack]" , SYM_OPENBRACK},
129			{"[closebrack]" , SYM_CLOSEBRACK},
130			{"[rerror]" , SYM_TOKENIZER_RERROR},
131			{"[appcont]" , SYM_APP_CONT},
132
133			// special symbols with parseable names
134			{"type-list" , SYM_TYPE_LIST},
135			{"type-i" , SYM_TYPE_I},
136			{"type-u" , SYM_TYPE_U},
137			{"type-float" , SYM_TYPE_FLOAT},
138			{"type-i32" , SYM_TYPE_I32},
139			{"type-u32" , SYM_TYPE_U32},
140			{"type-double" , SYM_TYPE_DOUBLE},
141			{"type-i64" , SYM_TYPE_I64},
142			{"type-u64" , SYM_TYPE_U64},
143			{"type-array" , SYM_TYPE_ARRAY},
144			{"type-symbol" , SYM_TYPE_SYMBOL},
145			{"type-char" , SYM_TYPE_CHAR},
146			{"type-byte" , SYM_TYPE_BYTE},
147			{"type-channel" , SYM_TYPE_CHANNEL},
148			{"type-lisparray" , SYM_TYPE_LISPARRAY},
149			{"type-dm" , SYM_TYPE_DEFRAG_MEM},
150			{"type-custom" , SYM_TYPE_CUSTOM},
151
152			// Fundamental operations
153			{"+" , SYM_ADD},
154			{"-" , SYM_SUB},
155			{"*" , SYM_MUL},
156			{"/" , SYM_DIV},
157			{"//" , SYM_INT_DIV},
158			{"mod" , SYM_MOD},
159			{"=" , SYM_NUMEQ},
160			{"!=" , SYM_NUM_NOT_EQ},
161			{"<" , SYM_LT},
162			{">" , SYM_GT},
163			{"<=" , SYM_LEQ},
164			{">=" , SYM_GEQ},
165			{"eval" , SYM_EVAL},
166			{"eval-program" , SYM_EVAL_PROGRAM},
167			{"and" , SYM_AND},
168			{"or" , SYM_OR},
169			{"not" , SYM_NOT},
170			{"yield" , SYM_YIELD},
171			{"wait" , SYM_WAIT},
172			{"spawn" , SYM_SPAWN},
173			{"atomic" , SYM_ATOMIC},
174			{"self" , SYM_SELF},
175			{"spawn-trap" , SYM_SPAWN_TRAP},
176			{"set-mailbox-size" , SYM_SET_MAILBOX_SIZE},
177			{"eq" , SYM_EQ},
178			{"not-eq" , SYM_NOT_EQ},
179			{"car" , SYM_CAR},
180			{"cdr" , SYM_CDR},
181			{"cons" , SYM_CONS},
182			{"list" , SYM_LIST},
183			{"append" , SYM_APPEND},
184			{"undefine" , SYM_UNDEFINE},
185			{"bufcreate" , SYM_BYTEARRAY_CREATE},
186			{"type-of" , SYM_TYPE_OF},
187			{"sym2str" , SYM_SYMBOL_TO_STRING},
188			{"str2sym" , SYM_STRING_TO_SYMBOL},
189			{"sym2u" , SYM_SYMBOL_TO_UINT},
190			{"u2sym" , SYM_UINT_TO_SYMBOL},
191			{"setcar" , SYM_SET_CAR},
192			{"setcdr" , SYM_SET_CDR},
193			{"setix" , SYM_SET_IX},
194			{"length" , SYM_LIST_LENGTH},
195			{"range" , SYM_RANGE},
196
197			{"assoc" , SYM_ASSOC}, // lookup an association
198			{"cossa" , SYM_COSSA}, // lookup an association "backwards"
199			{"acons" , SYM_ACONS}, // Add to alist
200			{"setassoc" , SYM_SET_ASSOC}, // Change association
201
202			{"shl" , SYM_SHL},
203			{"shr" , SYM_SHR},
204			{"bitwise-and" , SYM_BITWISE_AND},
205			{"bitwise-or" , SYM_BITWISE_OR},
206			{"bitwise-xor" , SYM_BITWISE_XOR},
207			{"bitwise-not" , SYM_BITWISE_NOT},
208
209			{"custom-destruct", SYM_CUSTOM_DESTRUCT},
210
211			{"to-i" , SYM_TO_I},
212			{"to-i32" , SYM_TO_I32},
213			{"to-u" , SYM_TO_U},
214			{"to-u32" , SYM_TO_U32},
215			{"to-float" , SYM_TO_FLOAT},
216			{"to-i64" , SYM_TO_I64},
217			{"to-u64" , SYM_TO_U64},
218			{"to-double" , SYM_TO_DOUBLE},
219			{"to-byte" , SYM_TO_BYTE},
220
221			{"event-register-handler", SYM_REG_EVENT_HANDLER},
222			{"take" , SYM_TAKE},
223			{"drop" , SYM_DROP},
224			{"mkarray" , SYM_MKARRAY},
225			{"array-to-list" , SYM_ARRAY_TO_LIST},
226			{"list-to-array" , SYM_LIST_TO_ARRAY},
227
228			{"dm-create" , SYM_DM_CREATE},
229			{"dm-alloc" , SYM_DM_ALLOC},
230
231			{"list?" , SYM_IS_LIST},
232			{"number?" , SYM_IS_NUMBER},
233
234			// fast access in list
235			{"ix" , SYM_IX},
236
237			// aliases
238			{"first" , SYM_CAR},
239			{"rest" , SYM_CDR},
240			{"fn" , SYM_LAMBDA},
241			{"def" , SYM_DEFINE},
242			{"true" , SYM_TRUE},
243			{"false" , SYM_NIL},
244			{"setvar" , SYM_SETVAR},
245			{"type-f32" , SYM_TYPE_FLOAT},
246			{"type-f64" , SYM_TYPE_DOUBLE},
247			{"array-create" , SYM_BYTEARRAY_CREATE},
248			{"identity" , SYM_IDENTITY},
249			};
250
251			static lbm_uint *symlist = NULL;
252			static lbm_uint next_symbol_id = RUNTIME_SYMBOLS_START;
253			static lbm_uint symbol_table_size_list = 0;
254			static lbm_uint symbol_table_size_list_flash = 0;
255			static lbm_uint symbol_table_size_strings = 0;
256			static lbm_uint symbol_table_size_strings_flash = 0;
257
258			lbm_value symbol_x = ENC_SYM_NIL;
259			lbm_value symbol_y = ENC_SYM_NIL;
260
261		21756	int lbm_symrepr_init(void) {
262		21756	symlist = NULL;
263		21756	next_symbol_id = RUNTIME_SYMBOLS_START;
264		21756	symbol_table_size_list = 0;
265		21756	symbol_table_size_list_flash = 0;
266		21756	symbol_table_size_strings = 0;
267		21756	symbol_table_size_strings_flash = 0;
268
269		21756	lbm_uint x = 0;
270		21756	lbm_uint y = 0;
271		21756	lbm_add_symbol("x", &x);
272		21756	lbm_add_symbol("y", &y);
273		21756	symbol_x = lbm_enc_sym(x);
274		21756	symbol_y = lbm_enc_sym(y);
275		21756	return 1;
276			}
277
278			void lbm_symrepr_name_iterator(symrepr_name_iterator_fun f) {
279
280			lbm_uint *curr = symlist;
281			while (curr) {
282			f((const char *)curr[NAME]);
283			curr = (lbm_uint *)curr[NEXT];
284			}
285			}
286
287		132116	const char *lookup_symrepr_name_memory(lbm_uint id) {
288
289		132116	lbm_uint *curr = symlist;
290	✓✗	1477882	while (curr) {
291	✓✓	1477882	if (id == curr[ID]) {
292		132116	return (const char *)curr[NAME];
293			}
294		1345766	curr = (lbm_uint*)curr[NEXT];
295			}
296			return NULL;
297			}
298
299			// Lookup symbol name given a symbol id
300		393177	const char *lbm_get_name_by_symbol(lbm_uint id) {
301		393177	lbm_uint sym_kind = SYMBOL_KIND(id);
302	✓✓✓	393177	switch (sym_kind) {
303		252877	case SYMBOL_KIND_SPECIAL: /* fall through */
304			case SYMBOL_KIND_FUNDAMENTAL:
305			case SYMBOL_KIND_APPFUN:
306	✓✓	4681305	for (unsigned int i = 0; i < NUM_SPECIAL_SYMBOLS; i ++) {
307	✓✓	4681291	if (id == special_symbols[i].id) {
308		252863	return (special_symbols[i].name);
309			}
310			}
311		14	return NULL;
312			break;
313		8184	case SYMBOL_KIND_EXTENSION: {
314		8184	lbm_uint ext_id = id - EXTENSION_SYMBOLS_START;
315	✓✗	8184	if (ext_id < lbm_get_max_extensions()) {
316		8184	return extension_table[ext_id].name;
317			}
318			return NULL;
319			} break;
320		132116	default:
321		132116	return lookup_symrepr_name_memory(id);
322			}
323			}
324
325			lbm_uint lbm_get_symbol_list_entry_by_name(char name) {
326			lbm_uint *curr = symlist;
327			while (curr) {
328			char str = (char)curr[NAME];
329			if (str_eq(name, str)) {
330			return (lbm_uint *)curr;
331			}
332			curr = (lbm_uint*)curr[NEXT];
333			}
334			return NULL;
335			}
336
337			// Lookup symbol id given symbol name
338		3712606	int lbm_get_symbol_by_name(char name, lbm_uint id) {
339
340			// loop through special symbols
341	✓✓	644612511	for (unsigned int i = 0; i < NUM_SPECIAL_SYMBOLS; i ++) {
342	✓✓	641218548	if (str_eq(name, (char *)special_symbols[i].name)) {
343		318643	*id = special_symbols[i].id;
344		318643	return 1;
345			}
346			}
347
348			// loop through extensions
349	✓✓	667773087	for (unsigned int i = 0; i < lbm_get_max_extensions(); i ++) {
350	✓✓✓✓	664423084	if (extension_table[i].name && str_eq(name, extension_table[i].name)) {
351		43960	*id = EXTENSION_SYMBOLS_START + i;
352		43960	return 1;
353			}
354			}
355
356		3350003	lbm_uint *curr = symlist;
357	✓✓	42766540	while (curr) {
358		39903442	char str = (char)curr[NAME];
359	✓✓	39903442	if (str_eq(name, str)) {
360		486905	*id = curr[ID];
361		486905	return 1;
362			}
363		39416537	curr = (lbm_uint*)curr[NEXT];
364			}
365		2863098	return 0;
366			}
367
368			extern lbm_flash_status lbm_write_const_array_padded(uint8_t data, lbm_uint n, lbm_uint res);
369
370
371		70	static bool store_symbol_name_flash(char name, lbm_uint res) {
372		70	size_t n = strlen(name) + 1;
373	✗✓	70	if (n == 1) return 0; // failure if empty symbol
374
375			lbm_uint alloc_size;
376	✗✓	70	if (n % sizeof(lbm_uint) == 0) {
377			alloc_size = n/(sizeof(lbm_uint));
378			} else {
379		70	alloc_size = (n/(sizeof(lbm_uint))) + 1;
380			}
381
382		70	lbm_uint symbol_addr = 0;
383		70	lbm_flash_status s = lbm_write_const_array_padded((uint8_t*)name, n, &symbol_addr);
384	✓✗✗✓	70	if (s != LBM_FLASH_WRITE_OK \|\| symbol_addr == 0) {
385			return false;
386			}
387		70	symbol_table_size_strings_flash += alloc_size;
388		70	*res = symbol_addr;
389		70	return true;
390			}
391
392			// Symbol table
393			// non-const name copied into symbol-table-entry:
394			// Entry
395			// \|
396			// [name-ptr \| symbol-id \| next-ptr \| name n-bytes]
397			// \| /
398			// ------------points here -----
399			//
400			// const name referenced by symbol-table-entry:
401			// Entry
402			// \|
403			// [name-ptr \| symbol-id \| next-ptr]
404			// \|
405			// [name n-bytes]
406			//
407		143458	static bool add_symbol_to_symtab(char* name, lbm_uint id) {
408		143458	bool r = false;
409		143458	size_t n = strlen(name) + 1;
410	✓✗✓✗	143458	if (n > 1 && n <= 257) {
411		143458	size_t alloc_size = n + (3 * sizeof(lbm_uint));
412		143458	char *storage = lbm_malloc(alloc_size);
413	✓✗	143458	if (storage) {
414		143458	memcpy(storage + (3 * sizeof(lbm_uint)), name, n);
415		143458	lbm_uint m = (lbm_uint)storage;
416
417		143458	symbol_table_size_list += 3 * sizeof(lbm_uint); // Bytes
418		143458	symbol_table_size_strings += n; // Bytes
419		143458	m[NAME] = (lbm_uint)&m[3];
420		143458	m[NEXT] = (lbm_uint) symlist;
421		143458	symlist = m;
422		143458	m[ID] =id;
423		143458	r = true;
424			}
425			}
426		143458	return r;
427			}
428
429		70	static bool add_symbol_to_symtab_flash(lbm_uint name, lbm_uint id) {
430			lbm_uint entry[3];
431		70	entry[NAME] = name;
432		70	entry[NEXT] = (lbm_uint) symlist;
433		70	entry[ID] = id;
434		70	lbm_uint entry_addr = 0;
435	✓✗	70	if (lbm_write_const_raw(entry,3, &entry_addr) == LBM_FLASH_WRITE_OK) {
436		70	symlist = (lbm_uint*)entry_addr;
437		70	symbol_table_size_list_flash += 3;
438		70	return true;
439			}
440			return false;
441			}
442
443		143528	int lbm_add_symbol_base(char name, lbm_uint id, bool flash) {
444			lbm_uint symbol_name_storage;
445	✓✓	143528	if (flash) {
446	✗✓	70	if (!store_symbol_name_flash(name, &symbol_name_storage)) return 0;
447	✗✓	70	if (!add_symbol_to_symtab_flash(symbol_name_storage, next_symbol_id)) return 0;
448			} else {
449	✗✓	143458	if (!add_symbol_to_symtab(name, next_symbol_id)) {
450			return 0;
451			}
452			}
453		143528	*id = next_symbol_id ++;
454		143528	return 1;
455			}
456
457		107062	int lbm_add_symbol(char name, lbm_uint id) {
458			lbm_uint sym_id;
459	✓✓	107062	if (!lbm_get_symbol_by_name(name, &sym_id)) {
460		43540	return lbm_add_symbol_base(name, id, false);
461			} else {
462		63522	*id = sym_id;
463		63522	return 1;
464			}
465			return 0;
466			}
467
468			int lbm_add_symbol_flash(char name, lbm_uint id) {
469			lbm_uint sym_id;
470			if (!lbm_get_symbol_by_name(name, &sym_id)) {
471			return lbm_add_symbol_base(name, id, true);
472			} else {
473			*id = sym_id;
474			return 1;
475			}
476			return 0;
477			}
478
479		413364	int lbm_add_symbol_const_base(char name, lbm_uint id) {
480		413364	lbm_uint *m = lbm_memory_allocate(3);
481	✗✓	413364	if (m == NULL) return 0;
482		413364	symbol_table_size_list += 3;
483		413364	m[NAME] = (lbm_uint) name;
484		413364	m[NEXT] = (lbm_uint) symlist;
485		413364	symlist = m;
486		413364	m[ID] = next_symbol_id;
487		413364	*id = next_symbol_id ++;
488		413364	return 1;
489			}
490
491		413364	int lbm_add_symbol_const(char name, lbm_uint id) {
492			lbm_uint sym_id;
493	✓✗	413364	if (!lbm_get_symbol_by_name(name, &sym_id)) {
494		413364	return lbm_add_symbol_const_base(name, id);
495			} else {
496			*id = sym_id;
497			return 1;
498			}
499			return 0;
500			}
501
502		56	int lbm_str_to_symbol(char name, lbm_uint sym_id) {
503	✓✓	56	if (lbm_get_symbol_by_name(name, sym_id))
504		28	return 1;
505	✓✗	28	else if (lbm_add_symbol(name, sym_id))
506		28	return 1;
507			return 0;
508			}
509
510		28	lbm_uint lbm_get_symbol_table_size(void) {
511		28	return (symbol_table_size_list +symbol_table_size_strings);
512			}
513
514		28	lbm_uint lbm_get_symbol_table_size_flash(void) {
515		28	return (symbol_table_size_list_flash +
516		28	symbol_table_size_strings_flash) * sizeof(lbm_uint);
517			}
518
519		28	lbm_uint lbm_get_symbol_table_size_names(void) {
520		28	return symbol_table_size_strings; // Bytes already
521			}
522
523		28	lbm_uint lbm_get_symbol_table_size_names_flash(void) {
524		28	return symbol_table_size_strings_flash * sizeof(lbm_uint);
525			}
526
527			bool lbm_symbol_in_flash(char *str) {
528			return !lbm_memory_ptr_inside((lbm_uint*)str);
529			}
530
531			bool lbm_symbol_list_entry_in_flash(char *str) {
532			lbm_uint *entry = lbm_get_symbol_list_entry_by_name(str);
533			return (entry == NULL \|\| !lbm_memory_ptr_inside(entry));
534			}