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-rw-r--r--pkg/bing/bpod.go90
-rw-r--r--pkg/cetus/cetus.go5
2 files changed, 95 insertions, 0 deletions
diff --git a/pkg/bing/bpod.go b/pkg/bing/bpod.go
new file mode 100644
index 0000000..5f425b0
--- /dev/null
+++ b/pkg/bing/bpod.go
@@ -0,0 +1,90 @@
+// Copyright (c) 2020, Andinus <andinus@inventati.org>
+
+// Permission to use, copy, modify, and/or distribute this software for any
+// purpose with or without fee is hereby granted, provided that the above
+// copyright notice and this permission notice appear in all copies.
+
+// THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
+// WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
+// MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
+// ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
+// WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
+// ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
+// OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
+
+package bing
+
+import (
+	"encoding/json"
+	"fmt"
+	"io/ioutil"
+	"net/http"
+	"time"
+)
+
+// Photo holds responses
+type Photo struct {
+	StartDate     string `json:"startdate"`
+	FullStartDate string `json:"fullstartdate"`
+	EndDate       string `json:"enddate"`
+	URL           string `json:"url"`
+	URLBase       string `json:"urlbase"`
+	Copyright     string `json:"copyright"`
+	CopyrightLink string `json:"copyrightlink"`
+	Title         string `json:"title"`
+	Hsh           string `json:"hsh"`
+}
+
+// BPOD  holds list of response
+type BPOD struct {
+	Photos []Photo `json:"images"`
+}
+
+// BPODPath returns Bing Photo of the Day responses
+func BPODPath(bpodInfo map[string]string, timeout time.Duration) (BPOD, error) {
+	var err error
+	bpodRes := BPOD{}
+
+	client := http.Client{
+		Timeout: time.Second * timeout,
+	}
+
+	req, err := http.NewRequest(http.MethodGet, bpodInfo["api"], nil)
+	if err != nil {
+		return bpodRes, err
+	}
+	q := req.URL.Query()
+	q.Add("format", "js")
+
+	// if random flag is passed then fetch 7 photos
+	if bpodInfo["random"] == "true" {
+		q.Add("n", "7")
+	} else {
+		q.Add("n", "1")
+	}
+	req.URL.RawQuery = q.Encode()
+
+	res, err := client.Do(req)
+
+	if err != nil {
+		return bpodRes, err
+	}
+	defer res.Body.Close()
+
+	resBody, err := ioutil.ReadAll(res.Body)
+	if err != nil {
+		return bpodRes, err
+	}
+
+	err = json.Unmarshal([]byte(resBody), &bpodRes)
+	if err != nil {
+		return bpodRes, err
+	}
+
+	if res.StatusCode != 200 {
+		return bpodRes, fmt.Errorf("Unexpected response status code received: %d %s",
+			res.StatusCode, http.StatusText(res.StatusCode))
+	}
+
+	return bpodRes, err
+}
diff --git a/pkg/cetus/cetus.go b/pkg/cetus/cetus.go
index cca3a2e..8859ee8 100644
--- a/pkg/cetus/cetus.go
+++ b/pkg/cetus/cetus.go
@@ -22,3 +22,8 @@ var version string = "v0.4.3"
 func Version() {
 	fmt.Printf("Cetus %s\n", version)
 }
+
+// PrintPath prints the path passed
+func PrintPath(path string) {
+	fmt.Println(path)
+}
'>236 237 238 239 240 241 242 243 244 245 246 247 248 249 250 251 252 253 254 255 256 257 258 259 260 261 262 263 264 265 266 267 268 269 270 271 272 273 274 275 276 277 278 279 280 281 282 283 284 285 286 287 288 289 290 291 292 293 294 295 296 297 298 299 300 301 302 303 304 305 306 307 308 309 310 311 312 313 314 315 316 317 318 319 320 321 322 323 324 325 326 327 328 329 330 331 332 333 334 335 336 337 338 339 340 341 342 343 344 345 346 347 348 349 350 351 352 353 354 355 356 357 358 359 360 361 362 363 364 365 366 367 368 369 370 371 372 373 374 375 376 377 378 379 380 381 382 383 384 385 386 387 388 389 390 391 392 393 394 395 396 397 398 399 400 401 402 403 404 405 406 407 408 409 410 411 412 413 414 415 416 417 418 419 420 421 422 423 424 425 426 427 428 429 430 431 432 433 434 435 436 437 438 439 440 441 442 443 444 445 446 447 448 449 450 451 452 453 454 455 456 457 458 459 460 461 462 463 464 465 466 467 468 469 470 471 472 473 474 475 476 477 478 479 480 481 482 483 484 485 486 487 488 489 490 491 492 493 494 495 496 497 498 499 500 501 502 503 504 505 506 507 508 509 510 511 512 513 514 515 516 517 518 519 520 521 522 523 524 525 526 527 528 529 530 531 532 533 534 535 536 537 538 539 540 541 542 543 544 545 546 547 548 549 550 551 552 553 554 555 556 557 558 559 560 561 562 563 564 565 566 567 568 569 570 571 572 573 574 575 576 577 578 579 580 581 582 583 584 585 586 587 588 589 590 591 592 593 594 595 596 597 598 599 600 601 602 603 604 605 606 607 608 609 610 611 612 613 614 615 616 617 618 619 620 621 622 623 624 625 626 627 628 629 630 631 632 633 634 635
//: Arrays contain a variable number of elements of the same type. Their value
//: starts with the length of the array.
//:
//: You can create arrays of containers, but containers can only contain
//: elements of a fixed size, so you can't create containers containing arrays.
//: Create containers containing addresses to arrays instead.

//: You can create arrays using 'create-array'.
void test_create_array() {
  run(
      "def main [\n"
      // create an array occupying locations 1 (for the size) and 2-4 (for the elements)
      "  1:array:num:3 <- create-array\n"
      "]\n"
  );
  CHECK_TRACE_CONTENTS(
      "run: creating array from 4 locations\n"
  );
}

:(before "End Primitive Recipe Declarations")
CREATE_ARRAY,
:(before "End Primitive Recipe Numbers")
put(Recipe_ordinal, "create-array", CREATE_ARRAY);
:(before "End Primitive Recipe Checks")
case CREATE_ARRAY: {
  if (inst.products.empty()) {
    raise << maybe(get(Recipe, r).name) << "'create-array' needs one product and no ingredients but got '" << to_original_string(inst) << '\n' << end();
    break;
  }
  reagent/*copy*/ product = inst.products.at(0);
  // Update CREATE_ARRAY product in Check
  if (!is_mu_array(product)) {
    raise << maybe(get(Recipe, r).name) << "'create-array' cannot create non-array '" << product.original_string << "'\n" << end();
    break;
  }
  if (!product.type->right) {
    raise << maybe(get(Recipe, r).name) << "create array of what? '" << to_original_string(inst) << "'\n" << end();
    break;
  }
  // 'create-array' will need to check properties rather than types
  type_tree* array_length_from_type = product.type->right->right;
  if (!array_length_from_type) {
    raise << maybe(get(Recipe, r).name) << "create array of what size? '" << to_original_string(inst) << "'\n" << end();
    break;
  }
  if (!product.type->right->right->atom)
    array_length_from_type = array_length_from_type->left;
  if (!is_integer(array_length_from_type->name)) {
    raise << maybe(get(Recipe, r).name) << "'create-array' product should specify size of array after its element type, but got '" << product.type->right->right->name << "'\n" << end();
    break;
  }
  break;
}
:(before "End Primitive Recipe Implementations")
case CREATE_ARRAY: {
  reagent/*copy*/ product = current_instruction().products.at(0);
  // Update CREATE_ARRAY product in Run
  int base_address = product.value;
  type_tree* array_length_from_type = product.type->right->right;
  if (!product.type->right->right->atom)
    array_length_from_type = array_length_from_type->left;
  int array_length = to_integer(array_length_from_type->name);
  // initialize array length, so that size_of will work
  trace(Callstack_depth+1, "mem") << "storing " << array_length << " in location " << base_address << end();
  put(Memory, base_address, array_length);  // in array elements
  int size = size_of(product);  // in locations
  trace(Callstack_depth+1, "run") << "creating array from " << size << " locations" << end();
  // initialize array
  for (int i = 1;  i <= size_of(product);  ++i)
    put(Memory, base_address+i, 0);
  // no need to update product
  write_products = false;
  break;
}

:(code)
// Arrays can be copied around with a single instruction just like numbers,
// no matter how large they are.
// You don't need to pass the size around, since each array variable stores its
// size in memory at run-time. We'll call a variable with an explicit size a
// 'static' array, and one without a 'dynamic' array since it can contain
// arrays of many different sizes.
void test_copy_array() {
  run(
      "def main [\n"
      "  1:array:num:3 <- create-array\n"
      "  2:num <- copy 14\n"
      "  3:num <- copy 15\n"
      "  4:num <- copy 16\n"
      "  5:array:num <- copy 1:array:num:3\n"
      "]\n"
  );
  CHECK_TRACE_CONTENTS(
      "mem: storing 3 in location 5\n"
      "mem: storing 14 in location 6\n"
      "mem: storing 15 in location 7\n"
      "mem: storing 16 in location 8\n"
  );
}

void test_stash_array() {
  run(
      "def main [\n"
      "  1:array:num:3 <- create-array\n"
      "  2:num <- copy 14\n"
      "  3:num <- copy 15\n"
      "  4:num <- copy 16\n"
      "  stash [foo:], 1:array:num:3\n"
      "]\n"
  );
  CHECK_TRACE_CONTENTS(
      "app: foo: 3 14 15 16\n"
  );
}

:(before "End types_coercible Special-cases")
if (is_mu_array(from) && is_mu_array(to))
  return types_strictly_match(array_element(from.type), array_element(to.type));

:(before "End size_of(reagent r) Special-cases")
if (!r.type->atom && r.type->left->atom && r.type->left->value == Array_type_ordinal) {
  if (!r.type->right) {
    raise << maybe(current_recipe_name()) << "'" << r.original_string << "' is an array of what?\n" << end();
    return 1;
  }
  return /*space for length*/1 + array_length(r)*size_of(array_element(r.type));
}

:(before "End size_of(type) Non-atom Special-cases")
if (type->left->value == Array_type_ordinal) return static_array_length(type);
:(code)
int static_array_length(const type_tree* type) {
  if (!type->atom && type->right && !type->right->atom && type->right->right && !type->right->right->atom && !type->right->right->right  // exactly 3 types
      && type->right->right->left && type->right->right->left->atom && is_integer(type->right->right->left->name)) {  // third 'type' is a number
    // get size from type
    return to_integer(type->right->right->left->name);
  }
  cerr << to_string(type) << '\n';
  assert(false);
}

//: disable the size mismatch check for arrays since the destination array
//: need not be initialized
:(before "End size_mismatch(x) Special-cases")
if (x.type && !x.type->atom && x.type->left->value == Array_type_ordinal) return false;

//:: arrays inside containers
//: arrays are disallowed inside containers unless their length is fixed in
//: advance

:(code)
void test_container_permits_static_array_element() {
  run(
      "container foo [\n"
      "  x:array:num:3\n"
      "]\n"
  );
  CHECK_TRACE_COUNT("error", 0);
}

:(before "End insert_container Special-cases")
else if (is_integer(type->name)) {  // sometimes types will contain non-type tags, like numbers for the size of an array
  type->value = 0;
}

:(code)
void test_container_disallows_dynamic_array_element() {
  Hide_errors = true;
  run(
      "container foo [\n"
      "  x:array:num\n"
      "]\n"
  );
  CHECK_TRACE_CONTENTS(
      "error: container 'foo' cannot determine size of element 'x'\n"
  );
}

:(before "End Load Container Element Definition")
{
  const type_tree* type = info.elements.back().type;
  if (type && type->atom && type->name == "array") {
    raise << "container '" << name << "' doesn't specify type of array elements for '" << info.elements.back().name << "'\n" << end();
    continue;
  }
  if (type && !type->atom && type->left->atom && type->left->name == "array") {
    if (!type->right) {
      raise << "container '" << name << "' doesn't specify type of array elements for '" << info.elements.back().name << "'\n" << end();
      continue;
    }
    if (!type->right->right || !is_integer(type->right->right->left->name)) {  // array has no length
      raise << "container '" << name << "' cannot determine size of element '" << info.elements.back().name << "'\n" << end();
      continue;
    }
  }
}

//: disable the size mismatch check for 'merge' instructions since containers
//: can contain arrays, and since we already do plenty of checking for them
:(before "End size_mismatch(x) Special-cases")
if (current_call().running_step_index < SIZE(get(Recipe, current_call().running_recipe).steps)
    && current_instruction().operation == MERGE) {
  return false;
}

:(code)
void test_merge_static_array_into_container() {
  run(
      "container foo [\n"
      "  x:num\n"
      "  y:array:num:3\n"
      "]\n"
      "def main [\n"
      "  1:array:num:3 <- create-array\n"
      "  10:foo <- merge 34, 1:array:num:3\n"
      "]\n"
  );
  // no errors
}

void test_code_inside_container() {
  Hide_errors = true;
  run(
      "container card [\n"
      "  rank:num <- next-ingredient\n"
      "]\n"
      "def foo [\n"
      "  1:card <- merge 3\n"
      "  2:num <- get 1:card rank:offset\n"
      "]\n"
  );
  // shouldn't die
}

//:: To access elements of an array, use 'index'

void test_index() {
  run(
      "def main [\n"
      "  1:array:num:3 <- create-array\n"
      "  2:num <- copy 14\n"
      "  3:num <- copy 15\n"
      "  4:num <- copy 16\n"
      "  10:num <- index 1:array:num:3, 0/index\n"  // the index must be a non-negative whole number
      "]\n"
  );
  CHECK_TRACE_CONTENTS(
      "mem: storing 14 in location 10\n"
  );
}

void test_index_compound_element() {
  run(
      "def main [\n"
      "  {1: (array (address number) 3)} <- create-array\n"
      // skip alloc id
      "  3:num <- copy 14\n"
      // skip alloc id
      "  5:num <- copy 15\n"
      // skip alloc id
      "  7:num <- copy 16\n"
      "  10:address:num <- index {1: (array (address number) 3)}, 0\n"
      "]\n"
  );
  CHECK_TRACE_CONTENTS(
      // skip alloc id
      "mem: storing 14 in location 11\n"
  );
}

void test_index_direct_offset() {
  run(
      "def main [\n"
      "  1:array:num:3 <- create-array\n"
      "  2:num <- copy 14\n"
      "  3:num <- copy 15\n"
      "  4:num <- copy 16\n"
      "  10:num <- copy 0\n"
      "  20:num <- index 1:array:num, 10:num\n"
      "]\n"
  );
  CHECK_TRACE_CONTENTS(
      "mem: storing 14 in location 20\n"
  );
}

:(before "End Primitive Recipe Declarations")
INDEX,
:(before "End Primitive Recipe Numbers")
put(Recipe_ordinal, "index", INDEX);
:(before "End Primitive Recipe Checks")
case INDEX: {
  if (SIZE(inst.ingredients) != 2) {
    raise << maybe(get(Recipe, r).name) << "'index' expects exactly 2 ingredients in '" << to_original_string(inst) << "'\n" << end();
    break;
  }
  reagent/*copy*/ base = inst.ingredients.at(0);
  // Update INDEX base in Check
  if (!is_mu_array(base)) {
    raise << maybe(get(Recipe, r).name) << "'index' on a non-array '" << base.original_string << "'\n" << end();
    break;
  }
  reagent/*copy*/ index = inst.ingredients.at(1);
  // Update INDEX index in Check
  if (!is_mu_number(index)) {
    raise << maybe(get(Recipe, r).name) << "second ingredient of 'index' should be a number, but got '" << index.original_string << "'\n" << end();
    break;
  }
  if (inst.products.empty()) break;
  reagent/*copy*/ product = inst.products.at(0);
  // Update INDEX product in Check
  reagent/*local*/ element(copy_array_element(base.type));
  if (!types_coercible(product, element)) {
    raise << maybe(get(Recipe, r).name) << "'index' on '" << base.original_string << "' can't be saved in '" << product.original_string << "'; type should be '" << names_to_string_without_quotes(element.type) << "'\n" << end();
    break;
  }
  break;
}
:(before "End Primitive Recipe Implementations")
case INDEX: {
  reagent/*copy*/ base = current_instruction().ingredients.at(0);
  // Update INDEX base in Run
  int base_address = base.value;
  trace(Callstack_depth+1, "run") << "base address is " << base_address << end();
  if (base_address == 0) {
    raise << maybe(current_recipe_name()) << "tried to access location 0 in '" << to_original_string(current_instruction()) << "'\n" << end();
    break;
  }
  reagent/*copy*/ index = current_instruction().ingredients.at(1);
  // Update INDEX index in Run
  vector<double> index_val(read_memory(index));
  if (index_val.at(0) < 0 || index_val.at(0) >= get_or_insert(Memory, base_address)) {
    raise << maybe(current_recipe_name()) << "invalid index " << no_scientific(index_val.at(0)) << " in '" << to_original_string(current_instruction()) << "'\n" << end();
    break;
  }
  reagent/*local*/ element(copy_array_element(base.type));
  element.set_value(base_address + /*skip length*/1 + index_val.at(0)*size_of(element.type));
  trace(Callstack_depth+1, "run") << "address to copy is " << element.value << end();
  trace(Callstack_depth+1, "run") << "its type is " << to_string(element.type) << end();
  // Read element
  products.push_back(read_memory(element));
  break;
}

:(code)
type_tree* copy_array_element(const type_tree* type) {
  return new type_tree(*array_element(type));
}

type_tree* array_element(const type_tree* type) {
  assert(type->right);
  if (type->right->atom) {
    return type->right;
  }
  else if (!type->right->right) {
    return type->right->left;
  }
  // hack: support array:num:3 without requiring extra parens
  else if (type->right->right->left && type->right->right->left->atom && is_integer(type->right->right->left->name)) {
    assert(!type->right->right->right);
    return type->right->left;
  }
  return type->right;
}

int array_length(const reagent& x) {
  // x should already be canonized.
  // hack: look for length in type
  if (!x.type->atom && x.type->right && !x.type->right->atom && x.type->right->right && !x.type->right->right->atom && !x.type->right->right->right  // exactly 3 types
      && x.type->right->right->left && x.type->right->right->left->atom && is_integer(x.type->right->right->left->name)) {  // third 'type' is a number
    // get size from type
    return to_integer(x.type->right->right->left->name);
  }
  // this should never happen at transform time
  return get_or_insert(Memory, x.value);
}

:(before "End Unit Tests")
void test_array_length_compound() {
  put(Memory, 1, 3);
  put(Memory, 2, 14);
  put(Memory, 3, 15);
  put(Memory, 4, 16);
  reagent x("1:array:address:num");  // 3 types, but not a static array
  populate_value(x);
  CHECK_EQ(array_length(x), 3);
}

void test_array_length_static() {
  reagent x("1:array:num:3");
  CHECK_EQ(array_length(x), 3);
}

void test_index_truncates() {
  run(
      "def main [\n"
      "  1:array:num:3 <- create-array\n"
      "  2:num <- copy 14\n"
      "  3:num <- copy 15\n"
      "  4:num <- copy 16\n"
      "  10:num <- index 1:array:num:3, 1.5\n"  // non-whole number
      "]\n"
  );
  CHECK_TRACE_CONTENTS(
      // fraction is truncated away
      "mem: storing 15 in location 10\n"
  );
}

void test_index_out_of_bounds() {
  Hide_errors = true;
  run(
      "def main [\n"
      "  1:array:point:3 <- create-array\n"
      "  index 1:array:point:3, 4\n"  // less than size of array in locations, but larger than its length in elements
      "]\n"
  );
  CHECK_TRACE_CONTENTS(
      "error: main: invalid index 4 in 'index 1:array:point:3, 4'\n"
  );
}

void test_index_out_of_bounds_2() {
  Hide_errors = true;
  run(
      "def main [\n"
      "  1:array:num:3 <- create-array\n"
      "  index 1:array:num, -1\n"
      "]\n"
  );
  CHECK_TRACE_CONTENTS(
      "error: main: invalid index -1 in 'index 1:array:num, -1'\n"
  );
}

void test_index_product_type_mismatch() {
  Hide_errors = true;
  run(
      "def main [\n"
      "  1:array:point:3 <- create-array\n"
      "  10:num <- index 1:array:point, 0\n"
      "]\n"
  );
  CHECK_TRACE_CONTENTS(
      "error: main: 'index' on '1:array:point' can't be saved in '10:num'; type should be 'point'\n"
  );
}

//: we might want to call 'index' without saving the results, say in a sandbox

void test_index_without_product() {
  run(
      "def main [\n"
      "  1:array:num:3 <- create-array\n"
      "  index 1:array:num:3, 0\n"
      "]\n"
  );
  // just don't die
}

//:: To write to elements of arrays, use 'put'.

void test_put_index() {
  run(
      "def main [\n"
      "  1:array:num:3 <- create-array\n"
      "  1:array:num <- put-index 1:array:num, 1, 34\n"
      "]\n"
  );
  CHECK_TRACE_CONTENTS(
      "mem: storing 34 in location 3\n"
  );
}

:(before "End Primitive Recipe Declarations")
PUT_INDEX,
:(before "End Primitive Recipe Numbers")
put(Recipe_ordinal, "put-index", PUT_INDEX);
:(before "End Primitive Recipe Checks")
case PUT_INDEX: {
  if (SIZE(inst.ingredients) != 3) {
    raise << maybe(get(Recipe, r).name) << "'put-index' expects exactly 3 ingredients in '" << to_original_string(inst) << "'\n" << end();
    break;
  }
  reagent/*copy*/ base = inst.ingredients.at(0);
  // Update PUT_INDEX base in Check
  if (!is_mu_array(base)) {
    raise << maybe(get(Recipe, r).name) << "'put-index' on a non-array '" << base.original_string << "'\n" << end();
    break;
  }
  reagent/*copy*/ index = inst.ingredients.at(1);
  // Update PUT_INDEX index in Check
  if (!is_mu_number(index)) {
    raise << maybe(get(Recipe, r).name) << "second ingredient of 'put-index' should have type 'number', but got '" << inst.ingredients.at(1).original_string << "'\n" << end();
    break;
  }
  reagent/*copy*/ value = inst.ingredients.at(2);
  // Update PUT_INDEX value in Check
  reagent/*local*/ element(copy_array_element(base.type));
  if (!types_coercible(element, value)) {
    raise << maybe(get(Recipe, r).name) << "'put-index " << base.original_string << ", " << inst.ingredients.at(1).original_string << "' should store " << names_to_string_without_quotes(element.type) << " but '" << value.name << "' has type " << names_to_string_without_quotes(value.type) << '\n' << end();
    break;
  }
  if (inst.products.empty()) break;  // no more checks necessary
  if (inst.products.at(0).name != inst.ingredients.at(0).name) {
    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;
  }
  // End PUT_INDEX Product Checks
  break;
}
:(before "End Primitive Recipe Implementations")
case PUT_INDEX: {
  reagent/*copy*/ base = current_instruction().ingredients.at(0);
  // Update PUT_INDEX base in Run
  int base_address = base.value;
  if (base_address == 0) {
    raise << maybe(current_recipe_name()) << "tried to access location 0 in '" << to_original_string(current_instruction()) << "'\n" << end();
    break;
  }
  reagent/*copy*/ index = current_instruction().ingredients.at(1);
  // Update PUT_INDEX index in Run
  vector<double> index_val(read_memory(index));
  if (index_val.at(0) < 0 || index_val.at(0) >= get_or_insert(Memory, base_address)) {
    raise << maybe(current_recipe_name()) << "invalid index " << no_scientific(index_val.at(0)) << " in '" << to_original_string(current_instruction()) << "'\n" << end();
    break;
  }
  int address = base_address + /*skip length*/1 + index_val.at(0)*size_of(array_element(base.type));
  trace(Callstack_depth+1, "run") << "address to copy to is " << address << end();
  // optimization: directly write the element rather than updating 'product'
  // and writing the entire array
  write_products = false;
  vector<double> value = read_memory(current_instruction().ingredients.at(2));
  // Write Memory in PUT_INDEX in Run
  for (int i = 0;  i < SIZE(value);  ++i) {
    trace(Callstack_depth+1, "mem") << "storing " << no_scientific(value.at(i)) << " in location " << address+i << end();
    put(Memory, address+i, value.at(i));
  }
  break;
}

:(code)
void test_put_index_out_of_bounds() {
  Hide_errors = true;
  run(
      "def main [\n"
      "  1:array:point:3 <- create-array\n"
      "  8:point <- merge 34, 35\n"
      "  1:array:point <- put-index 1:array:point, 4, 8:point\n"  // '4' is less than size of array in locations, but larger than its length in elements
      "]\n"
  );
  CHECK_TRACE_CONTENTS(
      "error: main: invalid index 4 in '1:array:point <- put-index 1:array:point, 4, 8:point'\n"
  );
}

void test_put_index_out_of_bounds_2() {
  Hide_errors = true;
  run(
      "def main [\n"
      "  1:array:point:3 <- create-array\n"
      "  10:point <- merge 34, 35\n"
      "  1:array:point <- put-index 1:array:point, -1, 10:point\n"
      "]\n"
  );
  CHECK_TRACE_CONTENTS(
      "error: main: invalid index -1 in '1:array:point <- put-index 1:array:point, -1, 10:point'\n"
  );
}

void test_put_index_product_error() {
  Hide_errors = true;
  run(
      "def main [\n"
      "  1:array:num:3 <- create-array\n"
      "  4:array:num:3 <- put-index 1:array:num:3, 0, 34\n"
      "]\n"
  );
  CHECK_TRACE_CONTENTS(
      "error: main: product of 'put-index' must be first ingredient '1:array:num:3', but got '4:array:num:3'\n"
  );
}

//:: compute the length of an array

void test_array_length() {
  run(
      "def main [\n"
      "  1:array:num:3 <- create-array\n"
      "  10:num <- length 1:array:num\n"
      "]\n"
  );
  CHECK_TRACE_CONTENTS(
      "mem: storing 3 in location 10\n"
  );
}

:(before "End Primitive Recipe Declarations")
LENGTH,
:(before "End Primitive Recipe Numbers")
put(Recipe_ordinal, "length", LENGTH);
:(before "End Primitive Recipe Checks")
case LENGTH: {
  if (SIZE(inst.ingredients) != 1) {
    raise << maybe(get(Recipe, r).name) << "'length' expects exactly 2 ingredients in '" << to_original_string(inst) << "'\n" << end();
    break;
  }
  reagent/*copy*/ array = inst.ingredients.at(0);
  // Update LENGTH array in Check
  if (!is_mu_array(array)) {
    raise << "tried to calculate length of non-array '" << array.original_string << "'\n" << end();
    break;
  }
  break;
}
:(before "End Primitive Recipe Implementations")
case LENGTH: {
  reagent/*copy*/ array = current_instruction().ingredients.at(0);
  // Update LENGTH array in Run
  if (array.value == 0) {
    raise << maybe(current_recipe_name()) << "tried to access location 0 in '" << to_original_string(current_instruction()) << "'\n" << end();
    break;
  }
  products.resize(1);
  products.at(0).push_back(get_or_insert(Memory, array.value));
  break;
}

//: optimization: none of the instructions in this layer use 'ingredients' so
//: stop copying potentially huge arrays into it.
:(before "End should_copy_ingredients Special-cases")
recipe_ordinal r = current_instruction().operation;
if (r == CREATE_ARRAY || r == INDEX || r == PUT_INDEX || r == LENGTH)
  return false;