examples/ex11.subx


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# Null-terminated vs length-prefixed ascii strings.
#
# By default we create strings with a 4-byte length prefix rather than a null suffix.
# However we still need null-prefixed strings when interacting with the Linux
# kernel in a few places. This layer implements a function for comparing
# a null-terminated 'kernel string' with a length-prefixed 'SubX string'.
#
# To run:
#   $ ./subx translate init.linux examples/ex11.subx -o examples/ex11
#   $ ./subx run examples/ex11  # runs a series of tests
#   ......  # all tests pass
#
# (We can't yet run the tests when given a "test" commandline argument,
# because checking for it would require the function being tested! Breakage
# would cause tests to not run, rather than to fail as we'd like.)

== code
#   instruction                     effective address                                                   register    displacement    immediate
# . op          subop               mod             rm32          base        index         scale       r32
# . 1-3 bytes   3 bits              2 bits          3 bits        3 bits      3 bits        2 bits      2 bits      0/1/2/4 bytes   0/1/2/4 bytes

Entry:  # run all tests
    e8/call  run-tests/disp32  # 'run-tests' is a function created automatically by SubX. It calls all functions that start with 'test-'.
    # exit(eax)
    89/copy                         3/mod/direct    3/rm32/ebx    .           .             .           0/r32/eax   .               .                 # copy eax to ebx
    e8/call  syscall_exit/disp32

# compare a null-terminated ascii string with a more idiomatic length-prefixed byte array
# reason for the name: the only place we should have null-terminated ascii strings is from commandline args
kernel-string-equal?:  # s : null-terminated ascii string, benchmark : length-prefixed ascii string -> eax : boolean
    # pseudocode:
    #   n = benchmark->length
    #   s1 = s
    #   s2 = benchmark->data
    #   i = 0
    #   while i < n
    #     c1 = *s1
    #     c2 = *s2
    #     if (c1 == 0) return false
    #     if (c1 != c2) return false
    #     ++s1, ++s2, ++i
    #   return *s1 == 0
    #
    # registers:
    #   i: ecx
    #   n: edx
    #   s1: edi
    #   s2: esi
    #   c1: eax
    #   c2: ebx
    #
    # . prologue
    55/push-ebp
    89/copy                         3/mod/direct    5/rm32/ebp    .           .             .           4/r32/esp   .               .                 # copy esp to ebp
    # . save registers
    51/push-ecx
    52/push-edx
    53/push-ebx
    56/push-esi
    57/push-edi
    # s1/edi = s
    8b/copy                         1/mod/*+disp8   5/rm32/ebp    .           .             .           7/r32/edi   8/disp8         .                 # copy *(ebp+8) to edi
    # n/edx = benchmark->length
    8b/copy                         1/mod/*+disp8   5/rm32/ebp    .           .             .           2/r32/edx   0xc/disp8       .                 # copy *(ebp+12) to edx
    8b/copy                         0/mod/indirect  2/rm32/edx    .           .             .           2/r32/edx   .               .                 # copy *edx to edx
    # s2/esi = benchmark->data
    8b/copy                         1/mod/*+disp8   5/rm32/ebp    .           .             .           6/r32/esi   0xc/disp8       .                 # copy *(ebp+12) to esi
    81          0/subop/add         3/mod/direct    6/rm32/esi    .           .             .           .           .               4/imm32           # add to esi
    # i/ecx = c1/eax = c2/ebx = 0
    b9/copy-to-ecx  0/imm32/exit
    b8/copy-to-eax  0/imm32
    bb/copy-to-ebx  0/imm32
$kernel-string-equal?:loop:
    # if (i >= n) break
    39/compare                      3/mod/direct    1/rm32/ecx    .           .             .           2/r32/edx   .               .                 # compare ecx with edx
    7d/jump-if-greater-or-equal  $kernel-string-equal?:break/disp8
    # c1 = *s1
    8a/copy-byte                    0/mod/indirect  7/rm32/edi    .           .             .           0/r32/AL    .               .                 # copy byte at *edi to AL
    # c2 = *s2
    8a/copy-byte                    0/mod/indirect  6/rm32/esi    .           .             .           3/r32/BL    .               .                 # copy byte at *esi to BL
    # if (c1 == 0) return false
    3d/compare-eax-and  0/imm32
    74/jump-if-equal  $kernel-string-equal?:false/disp8
    # if (c1 != c2) return false
    39/compare                      3/mod/direct    0/rm32/eax    .           .             .           3/r32/ebx   .               .                 # compare eax and ebx
    75/jump-if-not-equal  $kernel-string-equal?:false/disp8
    # ++i
    41/increment-ecx
    # ++s1
    47/increment-edi
    # ++s2
    46/increment-esi
    eb/jump  $kernel-string-equal?:loop/disp8
$kernel-string-equal?:break:
    # return *s1 == 0
    8a/copy-byte                    0/mod/indirect  7/rm32/edi    .           .             .           0/r32/AL    .               .                 # copy byte at *edi to AL
    3d/compare-eax-and  0/imm32
    75/jump-if-not-equal  $kernel-string-equal?:false/disp8
$kernel-string-equal?:true:
    b8/copy-to-eax  1/imm32
    eb/jump  $kernel-string-equal?:end/disp8
$kernel-string-equal?:false:
    b8/copy-to-eax  0/imm32
$kernel-string-equal?:end:
    # . restore registers
    5f/pop-to-edi
    5e/pop-to-esi
    5b/pop-to-ebx
    5a/pop-to-edx
    59/pop-to-ecx
    # . epilogue
    89/copy                         3/mod/direct    4/rm32/esp    .           .             .           5/r32/ebp   .               .                 # copy ebp to esp
    5d/pop-to-ebp
    c3/return

# - tests

test-compare-null-kernel-string-with-empty-array:
    # eax = kernel-string-equal?(Null-kernel-string, "")
    # . . push args
    68/push  ""/imm32
    68/push  Null-kernel-string/imm32
    # . . call
    e8/call  kernel-string-equal?/disp32
    # . . discard args
    81          0/subop/add         3/mod/direct    4/rm32/esp    .           .             .           .           .               8/imm32           # add to esp
    # check-ints-equal(eax, 1, msg)
    # . . push args
    68/push  "F - test-compare-null-kernel-string-with-empty-array"/imm32
    68/push  1/imm32/true
    50/push-eax
    # . . call
    e8/call  check-ints-equal/disp32
    # . . discard args
    81          0/subop/add         3/mod/direct    4/rm32/esp    .           .             .           .           .               0xc/imm32         # add to esp
    c3/return

test-compare-null-kernel-string-with-non-empty-array:
    # eax = kernel-string-equal?(Null-kernel-string, "Abc")
    # . . push args
    68/push  "Abc"/imm32
    68/push  Null-kernel-string/imm32
    # . . call
    e8/call  kernel-string-equal?/disp32
    # . . discard args
    81          0/subop/add         3/mod/direct    4/rm32/esp    .           .             .           .           .               8/imm32           # add to esp
    # check-ints-equal(eax, 0, msg)
    # . . push args
    68/push  "F - test-compare-null-kernel-string-with-non-empty-array"/imm32
    68/push  0/imm32/false
    50/push-eax
    # . . call
    e8/call  check-ints-equal/disp32
    # . . discard args
    81          0/subop/add         3/mod/direct    4/rm32/esp    .           .             .           .           .               0xc/imm32         # add to esp
    c3/return

test-compare-kernel-string-with-equal-array:
    # eax = kernel-string-equal?(_test-Abc-kernel-string, "Abc")
    # . . push args
    68/push  "Abc"/imm32
    68/push  _test-Abc-kernel-string/imm32
    # . . call
    e8/call  kernel-string-equal?/disp32
    # . . discard args
    81          0/subop/add         3/mod/direct    4/rm32/esp    .           .             .           .           .               8/imm32           # add to esp
    # check-ints-equal(eax, 1, msg)
    # . . push args
    68/push  "F - test-compare-kernel-string-with-equal-array"/imm32
    68/push  1/imm32/true
    50/push-eax
    # . . call
    e8/call  check-ints-equal/disp32
    # . . discard args
    81          0/subop/add         3/mod/direct    4/rm32/esp    .           .             .           .           .               0xc/imm32         # add to esp
    c3/return

test-compare-kernel-string-with-inequal-array:
    # eax = kernel-string-equal?(_test-Abc-kernel-string, "Adc")
    # . . push args
    68/push  "Adc"/imm32
    68/push  _test-Abc-kernel-string/imm32
    # . . call
    e8/call  kernel-string-equal?/disp32
    # . . discard args
    81          0/subop/add         3/mod/direct    4/rm32/esp    .           .             .           .           .               8/imm32           # add to esp
    # check-ints-equal(eax, 0, msg)
    # . . push args
    68/push  "F - test-compare-kernel-string-with-equal-array"/imm32
    68/push  0/imm32/false
    50/push-eax
    # . . call
    e8/call  check-ints-equal/disp32
    # . . discard args
    81          0/subop/add         3/mod/direct    4/rm32/esp    .           .             .           .           .               0xc/imm32         # add to esp
    c3/return

test-compare-kernel-string-with-empty-array:
    # eax = kernel-string-equal?(_test-Abc-kernel-string, "")
    # . . push args
    68/push  ""/imm32
    68/push  _test-Abc-kernel-string/imm32
    # . . call
    e8/call  kernel-string-equal?/disp32
    # . . discard args
    81          0/subop/add         3/mod/direct    4/rm32/esp    .           .             .           .           .               8/imm32           # add to esp
    # check-ints-equal(eax, 0, msg)
    # . . push args
    68/push  "F - test-compare-kernel-string-with-equal-array"/imm32
    68/push  0/imm32/false
    50/push-eax
    # . . call
    e8/call  check-ints-equal/disp32
    # . . discard args
    81          0/subop/add         3/mod/direct    4/rm32/esp    .           .             .           .           .               0xc/imm32         # add to esp
    c3/return

test-compare-kernel-string-with-shorter-array:
    # eax = kernel-string-equal?(_test-Abc-kernel-string, "Ab")
    # . . push args
    68/push  "Ab"/imm32
    68/push  _test-Abc-kernel-string/imm32
    # . . call
    e8/call  kernel-string-equal?/disp32
    # . . discard args
    81          0/subop/add         3/mod/direct    4/rm32/esp    .           .             .           .           .               8/imm32           # add to esp
    # check-ints-equal(eax, 0, msg)
    # . . push args
    68/push  "F - test-compare-kernel-string-with-shorter-array"/imm32
    68/push  0/imm32/false
    50/push-eax
    # . . call
    e8/call  check-ints-equal/disp32
    # . . discard args
    81          0/subop/add         3/mod/direct    4/rm32/esp    .           .             .           .           .               0xc/imm32         # add to esp
    c3/return

test-compare-kernel-string-with-longer-array:
    # eax = kernel-string-equal?(_test-Abc-kernel-string, "Abcd")
    # . . push args
    68/push  "Abcd"/imm32
    68/push  _test-Abc-kernel-string/imm32
    # . . call
    e8/call  kernel-string-equal?/disp32
    # . . discard args
    81          0/subop/add         3/mod/direct    4/rm32/esp    .           .             .           .           .               8/imm32           # add to esp
    # check-ints-equal(eax, 0, msg)
    # . . push args
    68/push  "F - test-compare-kernel-string-with-longer-array"/imm32
    68/push  0/imm32/false
    50/push-eax
    # . . call
    e8/call  check-ints-equal/disp32
    # . . discard args
    81          0/subop/add         3/mod/direct    4/rm32/esp    .           .             .           .           .               0xc/imm32         # add to esp
    c3/return

# - helpers

# print msg to stderr if a != b, otherwise print "."
check-ints-equal:  # (a : int, b : int, msg : (address array byte)) -> boolean
    # . prologue
    55/push-ebp
    89/copy                         3/mod/direct    5/rm32/ebp    .           .             .           4/r32/esp   .               .                 # copy esp to ebp
    # . save registers
    51/push-ecx
    53/push-ebx
    # load args into eax, ebx and ecx
    8b/copy                         1/mod/*+disp8   5/rm32/ebp    .           .             .           0/r32/eax   8/disp8         .                 # copy *(ebp+8) to eax
    8b/copy                         1/mod/*+disp8   5/rm32/ebp    .           .             .           3/r32/ebx   0xc/disp8       .                 # copy *(ebp+12) to ebx
    # if (eax == b/ebx) print('.') and return
    39/compare                      3/mod/direct    0/rm32/eax    .           .             .           3/r32/ebx   .               .                 # compare eax and ebx
    75/jump-if-unequal  $check-ints-equal:else/disp8
    # . write-stderr('.')
    # . . push args
    68/push  "."/imm32
    # . . call
    e8/call  write-stderr/disp32
    # . . discard args
    81          0/subop/add         3/mod/direct    4/rm32/esp    .           .             .           .           .               4/imm32           # add to esp
    # . return
    eb/jump  $check-ints-equal:end/disp8
    # otherwise print(msg)
$check-ints-equal:else:
    # copy msg into ecx
    8b/copy                         1/mod/*+disp8   5/rm32/ebp    .           .             .           1/r32/ecx   0x10/disp8       .                # copy *(ebp+16) to ecx
    # print(ecx)
    # . . push args
    51/push-ecx
    # . . call
    e8/call  write-stderr/disp32
    # . . discard args
    81          0/subop/add         3/mod/direct    4/rm32/esp    .           .             .           .           .               4/imm32           # add to esp
    # print newline
    # . . push args
    68/push  Newline/imm32
    # . . call
    e8/call  write-stderr/disp32
    # . . discard args
    81          0/subop/add         3/mod/direct    4/rm32/esp    .           .             .           .           .               4/imm32           # add to esp
$check-ints-equal:end:
    # . restore registers
    5b/pop-to-ebx
    59/pop-to-ecx
    # end
    89/copy                         3/mod/direct    4/rm32/esp    .           .             .           5/r32/ebp   .               .                 # copy ebp to esp
    5d/pop-to-ebp
    c3/return

write-stderr:  # s : (address array byte) -> <void>
    # . prologue
    55/push-ebp
    89/copy                         3/mod/direct    5/rm32/ebp    .           .             .           4/r32/esp   .               .                 # copy esp to ebp
    # . save registers
    50/push-eax
    51/push-ecx
    52/push-edx
    53/push-ebx
    # syscall(write, 2/stderr, (data) s+4, (size) *s)
    # . . fd = 2 (stderr)
    bb/copy-to-ebx  2/imm32
    # . . x = s+4
    8b/copy                         1/mod/*+disp8   5/rm32/ebp    .           .             .           1/r32/ecx   8/disp8         .                 # copy *(ebp+8) to ecx
    81          0/subop/add         3/mod/direct    1/rm32/ecx    .           .             .           .           .               4/imm32           # add to ecx
    # . . size = *s
    8b/copy                         1/mod/*+disp8   5/rm32/ebp    .           .             .           2/r32/edx   8/disp8         .                 # copy *(ebp+8) to edx
    8b/copy                         0/mod/indirect  2/rm32/edx    .           .             .           2/r32/edx   .               .                 # copy *edx to edx
    # . . syscall
    e8/call  syscall_write/disp32
    # . restore registers
    5b/pop-to-ebx
    5a/pop-to-edx
    59/pop-to-ecx
    58/pop-to-eax
    # . end
    89/copy                         3/mod/direct    4/rm32/esp    .           .             .           5/r32/ebp   .               .                 # copy ebp to esp
    5d/pop-to-ebp
    c3/return

== data

Newline:
    # size
    1/imm32
    # data
    0a/newline

# for kernel-string-equal tests
Null-kernel-string:
    00/null

_test-Abc-kernel-string:
    41/A 62/b 63/c 00/null

# . . vim:nowrap:textwidth=0
//: It's often convenient to express recipes in a textual fashion.

:(scenarios add_recipes)
:(scenario first_recipe)
recipe main [
  1:integer <- copy 23:literal
]
+parse: instruction: 1
+parse:   ingredient: {name: "23", value: 0, type: 0, properties: ["23": "literal"]}
+parse:   product: {name: "1", value: 0, type: 1, properties: ["1": "integer"]}

:(code)
vector<recipe_number> add_recipes(string form) {
  istringstream in(form);
  in >> std::noskipws;
  return add_recipes(in);
}

vector<recipe_number> add_recipes(istream& in) {
  vector<recipe_number> result;
  while (!in.eof()) {
    skip_comments_and_newlines(in);
    if (in.eof()) break;
    string command = next_word(in);
    // Command Handlers
    if (command == "recipe") {
      result.push_back(add_recipe(in));
    }
    // End Command Handlers
    else {
      raise << "unknown top-level command: " << command << '\n';
    }
  }
  return result;
}

recipe_number add_recipe(istream& in) {
  skip_comments_and_newlines(in);
  string recipe_name = next_word(in);
//?   cout << "recipe name: ^" << recipe_name << "$\n"; //? 3
  if (recipe_name.empty())
    raise << "empty recipe name\n";
//?     raise << "empty recipe name in " << in.str() << '\n';
  if (Recipe_number.find(recipe_name) == Recipe_number.end()) {
    Recipe_number[recipe_name] = Next_recipe_number++;
//?     cout << "AAA: " << recipe_name << " is now " << Recipe_number[recipe_name] << '\n'; //? 1
  }
  recipe_number r = Recipe_number[recipe_name];
  if (Recipe.find(r) != Recipe.end()) {
    raise << "redefining recipe " << Recipe[r].name << "\n";
    Recipe.erase(r);
  }
//?   cout << recipe_name << ": adding recipe " << r << '\n'; //? 3

  skip_whitespace(in);
  if (in.get() != '[')
    raise << "recipe body must begin with '['\n";

  skip_comments_and_newlines(in);

  instruction curr;
  while (next_instruction(in, &curr)) {
//?     if (!curr.products.empty()) cout << curr.products[0].to_string() << '\n'; //? 1
    Recipe[r].steps.push_back(curr);
  }
  Recipe[r].name = recipe_name;
//?   cout << "recipe " << recipe_name << " has " << Recipe[r].steps.size() << " steps.\n"; //? 1
  // track added recipes because we may need to undo them in tests; see below
  recently_added_recipes.push_back(r);
  return r;
}

bool next_instruction(istream& in, instruction* curr) {
  curr->clear();
  if (in.eof()) return false;
  skip_whitespace(in);  if (in.eof()) return false;
  skip_comments_and_newlines(in);  if (in.eof()) return false;

  vector<string> words;
  while (in.peek() != '\n') {
    skip_whitespace(in);  if (in.eof()) return false;
    string word = next_word(in);  if (in.eof()) return false;
    words.push_back(word);
    skip_whitespace(in);  if (in.eof()) return false;
  }
  skip_comments_and_newlines(in);  if (in.eof()) return false;

//?   if (words.size() == 1) cout << words[0] << ' ' << words[0].size() << '\n'; //? 1
  if (words.size() == 1 && words[0] == "]") {
//?     cout << "AAA\n"; //? 1
    return false;  // end of recipe
  }

  if (words.size() == 1 && !isalnum(words[0][0])) {
    curr->is_label = true;
    curr->label = words[0];
    trace("parse") << "label: " << curr->label;
    return !in.eof();
  }

  vector<string>::iterator p = words.begin();
  if (find(words.begin(), words.end(), "<-") != words.end()) {
    for (; *p != "<-"; ++p) {
      if (*p == ",") continue;
      curr->products.push_back(reagent(*p));
    }
    ++p;  // skip <-
  }

  curr->name = *p;
  if (Recipe_number.find(*p) == Recipe_number.end()) {
    Recipe_number[*p] = Next_recipe_number++;
//?     cout << "AAA: " << *p << " is now " << Recipe_number[*p] << '\n'; //? 1
  }
  if (Recipe_number[*p] == 0) {
    raise << "Recipe " << *p << " has number 0, which is reserved for IDLE.\n" << die();
  }
  curr->operation = Recipe_number[*p];  ++p;

  for (; p != words.end(); ++p) {
    if (*p == ",") continue;
    curr->ingredients.push_back(reagent(*p));
  }

  trace("parse") << "instruction: " << curr->operation;
  for (vector<reagent>::iterator p = curr->ingredients.begin(); p != curr->ingredients.end(); ++p) {
    trace("parse") << "  ingredient: " << p->to_string();
  }
  for (vector<reagent>::iterator p = curr->products.begin(); p != curr->products.end(); ++p) {
    trace("parse") << "  product: " << p->to_string();
  }
  return !in.eof();
}

string next_word(istream& in) {
//?   cout << "AAA next_word\n"; //? 1
  ostringstream out;
  skip_whitespace(in);
  slurp_word(in, out);
  skip_whitespace(in);
  skip_comment(in);
  return out.str();
}

void slurp_word(istream& in, ostream& out) {
//?   cout << "AAA slurp_word\n"; //? 1
  char c;
  if (in.peek() == ',') {
    in >> c;
    out << c;
    return;
  }
  while (in >> c) {
//?     cout << c << '\n'; //? 1
    if (isspace(c) || c == ',') {
      in.putback(c);
      break;
    }
    out << c;
  }
}

void skip_whitespace(istream& in) {
  while (isspace(in.peek()) && in.peek() != '\n') {
    in.get();
  }
}

void skip_comments_and_newlines(istream& in) {
  while (in.peek() == '\n' || in.peek() == '#') {
    if (in.peek() == '#') {
      in.get();
      while (in.peek() != '\n') in.get();
    }
    in.get();
  }
}

void skip_comment(istream& in) {
  if (in.peek() == '#') {
    in.get();
    while (in.peek() != '\n') in.get();
  }
}

void skip_comma(istream& in) {
  skip_whitespace(in);
  if (in.peek() == ',') in.get();
  skip_whitespace(in);
}

//: Have tests clean up any recipes they added.
:(before "End Globals")
vector<recipe_number> recently_added_recipes;
:(before "End Setup")
for (size_t i = 0; i < recently_added_recipes.size(); ++i) {
//?   cout << "AAA clearing " << Recipe[recently_added_recipes[i]].name << '\n'; //? 2
  Recipe_number.erase(Recipe[recently_added_recipes[i]].name);
  Recipe.erase(recently_added_recipes[i]);
}
// Clear Other State For recently_added_recipes
recently_added_recipes.clear();

:(scenario parse_comment_outside_recipe)
# comment
recipe main [
  1:integer <- copy 23:literal
]
+parse: instruction: 1
+parse:   ingredient: {name: "23", value: 0, type: 0, properties: ["23": "literal"]}
+parse:   product: {name: "1", value: 0, type: 1, properties: ["1": "integer"]}

:(scenario parse_comment_amongst_instruction)
recipe main [
  # comment
  1:integer <- copy 23:literal
]
+parse: instruction: 1
+parse:   ingredient: {name: "23", value: 0, type: 0, properties: ["23": "literal"]}
+parse:   product: {name: "1", value: 0, type: 1, properties: ["1": "integer"]}

:(scenario parse_comment_amongst_instruction2)
recipe main [
  # comment
  1:integer <- copy 23:literal
  # comment
]
+parse: instruction: 1
+parse:   ingredient: {name: "23", value: 0, type: 0, properties: ["23": "literal"]}
+parse:   product: {name: "1", value: 0, type: 1, properties: ["1": "integer"]}

:(scenario parse_comment_amongst_instruction3)
recipe main [
  1:integer <- copy 23:literal
  # comment
  2:integer <- copy 23:literal
]
+parse: instruction: 1
+parse:   ingredient: {name: "23", value: 0, type: 0, properties: ["23": "literal"]}
+parse:   product: {name: "1", value: 0, type: 1, properties: ["1": "integer"]}
+parse: instruction: 1
+parse:   ingredient: {name: "23", value: 0, type: 0, properties: ["23": "literal"]}
+parse:   product: {name: "2", value: 0, type: 1, properties: ["2": "integer"]}

:(scenario parse_comment_after_instruction)
recipe main [
  1:integer <- copy 23:literal  # comment
]
+parse: instruction: 1
+parse:   ingredient: {name: "23", value: 0, type: 0, properties: ["23": "literal"]}
+parse:   product: {name: "1", value: 0, type: 1, properties: ["1": "integer"]}

:(scenario parse_label)
recipe main [
  +foo
]
+parse: label: +foo
-parse: instruction: 1

:(scenario parse_multiple_properties)
recipe main [
  1:integer <- copy 23:literal/foo:bar:baz
]
+parse: instruction: 1
+parse:   ingredient: {name: "23", value: 0, type: 0, properties: ["23": "literal", "foo": "bar":"baz"]}
+parse:   product: {name: "1", value: 0, type: 1, properties: ["1": "integer"]}

:(scenario parse_multiple_products)
recipe main [
  1:integer, 2:integer <- copy 23:literal
]
+parse: instruction: 1
+parse:   ingredient: {name: "23", value: 0, type: 0, properties: ["23": "literal"]}
+parse:   product: {name: "1", value: 0, type: 1, properties: ["1": "integer"]}
+parse:   product: {name: "2", value: 0, type: 1, properties: ["2": "integer"]}

:(scenario parse_multiple_ingredients)
recipe main [
  1:integer, 2:integer <- copy 23:literal, 4:integer
]
+parse: instruction: 1
+parse:   ingredient: {name: "23", value: 0, type: 0, properties: ["23": "literal"]}
+parse:   ingredient: {name: "4", value: 0, type: 1, properties: ["4": "integer"]}
+parse:   product: {name: "1", value: 0, type: 1, properties: ["1": "integer"]}
+parse:   product: {name: "2", value: 0, type: 1, properties: ["2": "integer"]}

:(scenario parse_multiple_types)
recipe main [
  1:integer, 2:address:integer <- copy 23:literal, 4:integer
]
+parse: instruction: 1
+parse:   ingredient: {name: "23", value: 0, type: 0, properties: ["23": "literal"]}
+parse:   ingredient: {name: "4", value: 0, type: 1, properties: ["4": "integer"]}
+parse:   product: {name: "1", value: 0, type: 1, properties: ["1": "integer"]}
+parse:   product: {name: "2", value: 0, type: 2-1, properties: ["2": "address":"integer"]}

:(scenario parse_properties)
recipe main [
  1:integer:address/deref <- copy 23:literal
]
+parse:   product: {name: "1", value: 0, type: 1-2, properties: ["1": "integer":"address", "deref": ]}