archive/1.vm/013update_operation.cc


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//: Once all code is loaded, save operation ids of instructions and check that
//: nothing's undefined.

:(before "End Instruction Modifying Transforms")
Transform.push_back(update_instruction_operations);  // idempotent

:(code)
void update_instruction_operations(const recipe_ordinal r) {
  trace(101, "transform") << "--- compute instruction operations for recipe " << get(Recipe, r).name << end();
  recipe& caller = get(Recipe, r);
//?   cerr << "--- compute instruction operations for recipe " << caller.name << '\n';
  for (int index = 0;  index < SIZE(caller.steps);  ++index) {
    instruction& inst = caller.steps.at(index);
    if (inst.is_label) continue;
    if (!contains_key(Recipe_ordinal, inst.name)) {
      raise << maybe(caller.name) << "instruction '" << inst.name << "' has no recipe in '" << to_original_string(inst) << "'\n" << end();
      continue;
    }
    inst.operation = get(Recipe_ordinal, inst.name);
    // End Instruction Operation Checks
  }
}

// hook to suppress inserting recipe name into errors
string maybe(string recipe_name) {
  // End maybe(recipe_name) Special-cases
  return recipe_name + ": ";
}

void test_missing_arrow() {
  Hide_errors = true;
  transform(
      "def main [\n"
      "  1:number , copy 0\n"  // typo: ',' instead of '<-'
      "]\n"
  );
  CHECK_TRACE_CONTENTS(
      "error: main: instruction '1:number' has no recipe in '1:number copy, 0'\n"
  );
}