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path: root/060rewrite_literal_string.cc
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//: allow using literal strings anywhere that will accept immutable strings

:(scenario passing_literals_to_recipes)
def main [
  1:num/raw <- foo [abc]
]
def foo x:text -> n:num [
  local-scope
  load-ingredients
  n <- length *x
]
+mem: storing 3 in location 1

:(before "End Instruction Inserting/Deleting Transforms")
initialize_transform_rewrite_literal_string_to_text();
Transform.push_back(rewrite_literal_string_to_text);  // idempotent

:(before "End Globals")
set<string> recipes_taking_literal_strings;
:(code)
void initialize_transform_rewrite_literal_string_to_text() {
  recipes_taking_literal_strings.insert("assert");
  recipes_taking_literal_strings.insert("$print");
  recipes_taking_literal_strings.insert("$dump-trace");
  recipes_taking_literal_strings.insert("$system");
  recipes_taking_literal_strings.insert("trace");
  recipes_taking_literal_strings.insert("stash");
  recipes_taking_literal_strings.insert("new");
  recipes_taking_literal_strings.insert("run");
  recipes_taking_literal_strings.insert("memory-should-contain");
  recipes_taking_literal_strings.insert("trace-should-contain");
  recipes_taking_literal_strings.insert("trace-should-not-contain");
  recipes_taking_literal_strings.insert("check-trace-count-for-label");
  recipes_taking_literal_strings.insert("check-trace-count-for-label-greater-than");
  recipes_taking_literal_strings.insert("check-trace-count-for-label-lesser-than");
  // End initialize_transform_rewrite_literal_string_to_text()
}

void rewrite_literal_string_to_text(const recipe_ordinal r) {
  recipe& caller = get(Recipe, r);
  trace(9991, "transform") << "--- rewrite literal strings in recipe " << caller.name << end();
  if (contains_numeric_locations(caller)) return;
  vector<instruction> new_instructions;
  for (int i = 0;  i < SIZE(caller.steps);  ++i) {
    instruction& inst = caller.steps.at(i);
    if (recipes_taking_literal_strings.find(inst.name) == recipes_taking_literal_strings.end()) {
      for (int j = 0;  j < SIZE(inst.ingredients);  ++j) {
        if (!is_literal_text(inst.ingredients.at(j))) continue;
        instruction def;
        ostringstream ingredient_name;
        ingredient_name << inst.name << '_' << i << '_' << j << ":text";
        def.name = "new";
        def.ingredients.push_back(inst.ingredients.at(j));
        def.products.push_back(reagent(ingredient_name.str()));
        new_instructions.push_back(def);
        inst.ingredients.at(j).clear();  // reclaim old memory
        inst.ingredients.at(j) = reagent(ingredient_name.str());
      }
    }
    new_instructions.push_back(inst);
  }
  caller.steps.swap(new_instructions);
}

bool contains_numeric_locations(const recipe& caller) {
  for (int i = 0;  i < SIZE(caller.steps);  ++i) {
    const instruction& inst = caller.steps.at(i);
    for (int in = 0;  in < SIZE(inst.ingredients);  ++in)
      if (is_numeric_location(inst.ingredients.at(in)))
        return true;
    for (int out = 0;  out < SIZE(inst.products);  ++out)
      if (is_numeric_location(inst.products.at(out)))
        return true;
  }
  return false;
}
s="n">scenario store_to_0_fails) % Hide_errors = true; def main [ 10:&:num <- copy null 10:&:num/lookup <- copy 94 ] -mem: storing 94 in location 0 +error: main: tried to lookup 0 in '10:&:num/lookup <- copy 94' //: attempts to /lookup address 0 always loudly fail :(scenario lookup_0_fails) % Hide_errors = true; def main [ 10:&:num <- copy null 20:num <- copy 10:&:num/lookup ] +error: main: tried to lookup 0 in '20:num <- copy 10:&:num/lookup' :(scenario lookup_0_dumps_callstack) % Hide_errors = true; def main [ foo null ] def foo [ 10:&:num <- next-input 20:num <- copy 10:&:num/lookup ] +error: foo: tried to lookup 0 in '20:num <- copy 10:&:num/lookup' +error: called from main: foo null :(code) void canonize(reagent& x) { if (is_literal(x)) return; // Begin canonize(x) Lookups while (has_property(x, "lookup")) lookup_memory(x); } void lookup_memory(reagent& x) { if (!x.type || x.type->atom || x.type->left->value != Address_type_ordinal) { raise << maybe(current_recipe_name()) << "tried to lookup '" << x.original_string << "' but it isn't an address\n" << end(); dump_callstack(); return; } // compute value if (x.value == 0) { raise << maybe(current_recipe_name()) << "tried to lookup 0\n" << end(); dump_callstack(); return; } lookup_memory_core(x, /*check_for_null*/true); } void lookup_memory_core(reagent& x, bool check_for_null) { double address = x.value + /*skip alloc id in address*/1; double new_value = get_or_insert(Memory, address); trace("mem") << "location " << address << " contains " << no_scientific(new_value) << end(); // check for null if (check_for_null && new_value == 0) { if (Current_routine) { raise << maybe(current_recipe_name()) << "tried to lookup 0 in '" << to_original_string(current_instruction()) << "'\n" << end(); dump_callstack(); } else { raise << "tried to lookup 0\n" << end(); } } // validate alloc-id double alloc_id_in_address = get_or_insert(Memory, x.value); double alloc_id_in_payload = get_or_insert(Memory, new_value); //? cerr << x.value << ": " << alloc_id_in_address << " vs " << new_value << ": " << alloc_id_in_payload << '\n'; if (alloc_id_in_address != alloc_id_in_payload) { raise << maybe(current_recipe_name()) << "address is already abandoned in '" << to_original_string(current_instruction()) << "'\n" << end(); dump_callstack(); } // all well; complete the lookup x.set_value(new_value+/*skip alloc id in payload*/1); drop_from_type(x, "address"); drop_one_lookup(x); } :(after "Begin types_coercible(reagent to, reagent from)") if (!canonize_type(to)) return false; if (!canonize_type(from)) return false; :(after "Begin types_match(reagent to, reagent from)") if (!canonize_type(to)) return false; if (!canonize_type(from)) return false; :(after "Begin types_strictly_match(reagent to, reagent from)") if (!canonize_type(to)) return false; if (!canonize_type(from)) return false; :(before "End Preprocess is_mu_array(reagent r)") if (!canonize_type(r)) return false; :(before "End Preprocess is_mu_address(reagent r)") if (!canonize_type(r)) return false; :(before "End Preprocess is_mu_number(reagent r)") if (!canonize_type(r)) return false; :(before "End Preprocess is_mu_boolean(reagent r)") if (!canonize_type(r)) return false; :(before "End Preprocess is_mu_character(reagent r)") if (!canonize_type(r)) return false; :(after "Update product While Type-checking Merge") if (!canonize_type(product)) continue; :(before "End Compute Call Ingredient") canonize_type(ingredient); :(before "End Preprocess NEXT_INGREDIENT product") canonize_type(product); :(before "End Check RETURN Copy(lhs, rhs) canonize_type(lhs); canonize_type(rhs); :(code) bool canonize_type(reagent& r) { while (has_property(r, "lookup")) { if (!r.type || r.type->atom || !r.type->left || !r.type->left->atom || r.type->left->value != Address_type_ordinal) { raise << "cannot perform lookup on '" << r.name << "' because it has non-address type " << to_string(r.type) << '\n' << end(); return false; } drop_from_type(r, "address"); drop_one_lookup(r); } return true; } void drop_one_lookup(reagent& r) { for (vector<pair<string, string_tree*> >::iterator p = r.properties.begin(); p != r.properties.end(); ++p) { if (p->first == "lookup") { r.properties.erase(p); return; } } assert(false); } //: Tedious fixup to support addresses in container/array instructions of previous layers. //: Most instructions don't require fixup if they use the 'ingredients' and //: 'products' variables in run_current_routine(). :(scenario get_indirect) def main [ # skip alloc id for 10:&:point 11:num <- copy 20 # skip alloc id for payload 21:num <- copy 94 22:num <- copy 95 30:num <- get 10:&:point/lookup, 0:offset ] +mem: storing 94 in location 30 :(scenario get_indirect2) def main [ # skip alloc id for 10:&:point 11:num <- copy 20 # skip alloc id for payload 21:num <- copy 94 22:num <- copy 95 # skip alloc id for destination 31:num <- copy 40 30:&:num/lookup <- get 10:&:point/lookup, 0:offset ] +mem: storing 94 in location 41 :(scenario include_nonlookup_properties) def main [ # skip alloc id for 10:&:point 11:num <- copy 20 # skip alloc id for payload 21:num <- copy 94 22:num <- copy 95 30:num <- get 10:&:point/lookup/foo, 0:offset ] +mem: storing 94 in location 30 :(after "Update GET base in Check") if (!canonize_type(base)) break; :(after "Update GET product in Check") if (!canonize_type(product)) break; :(after "Update GET base in Run") canonize(base); :(scenario put_indirect) def main [ # skip alloc id for 10:&:point 11:num <- copy 20 # skip alloc id for payload 21:num <- copy 94 22:num <- copy 95 10:&:point/lookup <- put 10:&:point/lookup, 0:offset, 96 ] +mem: storing 96 in location 21 :(after "Update PUT base in Check") if (!canonize_type(base)) break; :(after "Update PUT offset in Check") if (!canonize_type(offset)) break; :(after "Update PUT base in Run") canonize(base); :(scenario put_product_error_with_lookup) % Hide_errors = true; def main [ # skip alloc id for 10:&:point 11:num <- copy 20 # skip alloc id for payload 21:num <- copy 94 22:num <- copy 95 10:&:point <- put 10:&:point/lookup, x:offset, 96 ] +error: main: product of 'put' must be first ingredient '10:&:point/lookup', but got '10:&:point' :(before "End PUT Product Checks") reagent/*copy*/ p = inst.products.at(0); if (!canonize_type(p)) break; // error raised elsewhere reagent/*copy*/ i = inst.ingredients.at(0); if (!canonize_type(i)) break; // error raised elsewhere if (!types_strictly_match(p, i)) { raise << maybe(get(Recipe, r).name) << "product of 'put' must be first ingredient '" << inst.ingredients.at(0).original_string << "', but got '" << inst.products.at(0).original_string << "'\n" << end(); break; } :(scenario new_error) % Hide_errors = true; def main [ 1:num/raw <- new num:type ] +error: main: product of 'new' has incorrect type: '1:num/raw <- new num:type' :(after "Update NEW product in Check") canonize_type(product); :(scenario copy_array_indirect) def main [ # skip alloc id for 10:&:@:num 11:num <- copy 20 # skip alloc id for payload 21:num <- copy 3 # array length 22:num <- copy 94 23:num <- copy 95 24:num <- copy 96 30:@:num <- copy 10:&:@:num/lookup ] +mem: storing 3 in location 30 +mem: storing 94 in location 31 +mem: storing 95 in location 32 +mem: storing 96 in location 33 :(scenario create_array_indirect) def main [ # skip alloc id for 10:&:@:num:3 11:num <- copy 3000 10:&:array:num:3/lookup <- create-array ] +mem: storing 3 in location 3001 :(after "Update CREATE_ARRAY product in Check") if (!canonize_type(product)) break; :(after "Update CREATE_ARRAY product in Run") canonize(product); :(scenario index_indirect) def main [ # skip alloc id for 10:&:@:num 11:num <- copy 20 # skip alloc id for payload 21:num <- copy 3 # array length 22:num <- copy 94 23:num <- copy 95 24:num <- copy 96 30:num <- index 10:&:@:num/lookup, 1 ] +mem: storing 95 in location 30 :(before "Update INDEX base in Check") if (!canonize_type(base)) break; :(before "Update INDEX index in Check") if (!canonize_type(index)) break; :(before "Update INDEX product in Check") if (!canonize_type(product)) break; :(before "Update INDEX base in Run") canonize(base); :(before "Update INDEX index in Run") canonize(index); :(scenario put_index_indirect) def main [ # skip alloc id for 10:&:@:num 11:num <- copy 20 # skip alloc id for payload 21:num <- copy 3 # array length 22:num <- copy 94 23:num <- copy 95 24:num <- copy 96 10:&:@:num/lookup <- put-index 10:&:@:num/lookup, 1, 97 ] +mem: storing 97 in location 23 :(scenario put_index_indirect_2) def main [ 10:num <- copy 3 # array length 11:num <- copy 94 12:num <- copy 95 13:num <- copy 96 # skip alloc id for address 21:num <- copy 30 # skip alloc id for payload 31:num <- copy 1 # index 10:@:num <- put-index 10:@:num, 20:&:num/lookup, 97 ] +mem: storing 97 in location 12 :(scenario put_index_product_error_with_lookup) % Hide_errors = true; def main [ # skip alloc id for 10:&:@:num 11:num <- copy 20 # skip alloc id for payload 21:num <- copy 3 # array length 22:num <- copy 94 23:num <- copy 95 24:num <- copy 96 10:&:@:num <- put-index 10:&:@:num/lookup, 1, 34 ] +error: main: product of 'put-index' must be first ingredient '10:&:@:num/lookup', but got '10:&:@:num' :(before "End PUT_INDEX Product Checks") reagent/*copy*/ p = inst.products.at(0); if (!canonize_type(p)) break; // error raised elsewhere reagent/*copy*/ i = inst.ingredients.at(0); if (!canonize_type(i)) break; // error raised elsewhere if (!types_strictly_match(p, i)) { raise << maybe(get(Recipe, r).name) << "product of 'put-index' must be first ingredient '" << inst.ingredients.at(0).original_string << "', but got '" << inst.products.at(0).original_string << "'\n" << end(); break; } :(scenario dilated_reagent_in_static_array) def main [ {1: (array (& num) 3)} <- create-array 10:&:num <- new num:type {1: (array (& num) 3)} <- put-index {1: (array (& num) 3)}, 0, 10:&:num *10:&:num <- copy 94 20:num <- copy *10:&:num ] +run: creating array from 7 locations +mem: storing 94 in location 20 :(before "Update PUT_INDEX base in Check") if (!canonize_type(base)) break; :(before "Update PUT_INDEX index in Check") if (!canonize_type(index)) break; :(before "Update PUT_INDEX value in Check") if (!canonize_type(value)) break; :(before "Update PUT_INDEX base in Run") canonize(base); :(before "Update PUT_INDEX index in Run") canonize(index); :(scenario length_indirect) def main [ # skip alloc id for 10:&:@:num 11:num <- copy 20 # skip alloc id for payload 21:num <- copy 3 # array length 22:num <- copy 94 23:num <- copy 95 24:num <- copy 96 30:num <- length 10:&:array:num/lookup ] +mem: storing 3 in location 30 :(before "Update LENGTH array in Check") if (!canonize_type(array)) break; :(before "Update LENGTH array in Run") canonize(array); :(scenario maybe_convert_indirect) def main [ # skip alloc id for 10:&:number-or-point 11:num <- copy 20 # skip alloc id for payload 21:number-or-point <- merge 0/number, 94 30:num, 31:bool <- maybe-convert 10:&:number-or-point/lookup, i:variant ] +mem: storing 1 in location 31 +mem: storing 94 in location 30 :(scenario maybe_convert_indirect_2) def main [ # skip alloc id for 10:&:number-or-point 11:num <- copy 20 # skip alloc id for payload 21:number-or-point <- merge 0/number, 94 # skip alloc id for 30:&:num 31:num <- copy 40 30:&:num/lookup, 50:bool <- maybe-convert 10:&:number-or-point/lookup, i:variant ] +mem: storing 1 in location 50 +mem: storing 94 in location 41 :(scenario maybe_convert_indirect_3) def main [ # skip alloc id for 10:&:number-or-point 11:num <- copy 20 # skip alloc id for payload 21:number-or-point <- merge 0/number, 94 # skip alloc id for 30:&:bool 31:num <- copy 40 50:num, 30:&:bool/lookup <- maybe-convert 10:&:number-or-point/lookup, i:variant ] +mem: storing 1 in location 41 +mem: storing 94 in location 50 :(before "Update MAYBE_CONVERT base in Check") if (!canonize_type(base)) break; :(before "Update MAYBE_CONVERT product in Check") if (!canonize_type(product)) break; :(before "Update MAYBE_CONVERT status in Check") if (!canonize_type(status)) break; :(before "Update MAYBE_CONVERT base in Run") canonize(base); :(before "Update MAYBE_CONVERT product in Run") canonize(product); :(before "Update MAYBE_CONVERT status in Run") canonize(status); :(scenario merge_exclusive_container_indirect) def main [ # skip alloc id for 10:&:number-or-point 11:num <- copy 20 10:&:number-or-point/lookup <- merge 0/number, 34 ] # skip alloc id +mem: storing 0 in location 21 +mem: storing 34 in location 22 :(before "Update size_mismatch Check for MERGE(x) canonize(x); //: abbreviation for '/lookup': a prefix '*' :(scenario lookup_abbreviation) def main [ # skip alloc id for 10:&:num 11:num <- copy 20 # skip alloc id for payload 21:num <- copy 94 30:num <- copy *10:&:num ] +parse: ingredient: {10: ("&" "num"), "lookup": ()} +mem: storing 94 in location 30 :(before "End Parsing reagent") { while (starts_with(name, "*")) { name.erase(0, 1); properties.push_back(pair<string, string_tree*>("lookup", NULL)); } if (name.empty()) raise << "illegal name '" << original_string << "'\n" << end(); } //:: helpers for debugging :(before "End Primitive Recipe Declarations") _DUMP, :(before "End Primitive Recipe Numbers") put(Recipe_ordinal, "$dump", _DUMP); :(before "End Primitive Recipe Implementations") case _DUMP: { reagent/*copy*/ after_canonize = current_instruction().ingredients.at(0); canonize(after_canonize); cerr << maybe(current_recipe_name()) << current_instruction().ingredients.at(0).name << ' ' << no_scientific(current_instruction().ingredients.at(0).value) << " => " << no_scientific(after_canonize.value) << " => " << no_scientific(get_or_insert(Memory, after_canonize.value)) << '\n'; break; } //: grab an address, and then dump its value at intervals //: useful for tracking down memory corruption (writing to an out-of-bounds address) :(before "End Globals") int Bar = -1; :(before "End Primitive Recipe Declarations") _BAR, :(before "End Primitive Recipe Numbers") put(Recipe_ordinal, "$bar", _BAR); :(before "End Primitive Recipe Implementations") case _BAR: { if (current_instruction().ingredients.empty()) { if (Bar != -1) cerr << Bar << ": " << no_scientific(get_or_insert(Memory, Bar)) << '\n'; else cerr << '\n'; } else { reagent/*copy*/ tmp = current_instruction().ingredients.at(0); canonize(tmp); Bar = tmp.value; } break; }