2015-03-27 04:47:29 +00:00
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//: Arrays contain a variable number of elements of the same type.
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2015-04-18 03:36:25 +00:00
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//:
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//: You can create arrays of containers, but containers can only contain
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//: elements of a fixed size, so you can't create containers containing arrays.
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//: Create containers containing addresses to arrays instead.
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2015-04-17 18:22:59 +00:00
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2015-02-22 06:08:58 +00:00
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:(scenario copy_array)
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2015-03-27 04:47:29 +00:00
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# Arrays can be copied around with a single instruction just like integers,
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# no matter how large they are.
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2015-02-22 06:08:58 +00:00
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recipe main [
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1:integer <- copy 3:literal
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2:integer <- copy 14:literal
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3:integer <- copy 15:literal
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4:integer <- copy 16:literal
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2015-03-27 04:47:29 +00:00
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5:array:integer <- copy 1:array:integer
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2015-02-22 06:08:58 +00:00
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]
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2015-02-25 09:24:11 +00:00
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+run: instruction main/4
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2015-02-22 06:08:58 +00:00
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+run: ingredient 0 is 1
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+mem: location 1 is 3
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+mem: location 2 is 14
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+mem: location 3 is 15
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+mem: location 4 is 16
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2015-03-24 06:59:59 +00:00
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+mem: storing 3 in location 5
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+mem: storing 14 in location 6
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+mem: storing 15 in location 7
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+mem: storing 16 in location 8
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2015-02-22 06:08:58 +00:00
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2015-04-18 04:49:40 +00:00
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:(scenario copy_array_indirect)
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recipe main [
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1:integer <- copy 3:literal
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2:integer <- copy 14:literal
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3:integer <- copy 15:literal
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4:integer <- copy 16:literal
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5:address:array:integer <- copy 1:literal
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6:array:integer <- copy 5:address:array:integer/deref
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]
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+run: instruction main/5
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+run: ingredient 0 is 5
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+mem: location 1 is 3
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+mem: location 2 is 14
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+mem: location 3 is 15
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+mem: location 4 is 16
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+mem: storing 3 in location 6
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+mem: storing 14 in location 7
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+mem: storing 15 in location 8
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+mem: storing 16 in location 9
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2015-03-27 04:47:29 +00:00
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//: disable the size mismatch check since the destination array need not be initialized
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:(replace "if (size_of(x) != data.size())" following "void write_memory(reagent x, vector<int> data)")
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if (x.types[0] != Type_number["array"] && size_of(x) != data.size())
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2015-03-27 03:24:38 +00:00
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:(after "size_t size_of(const reagent& r)")
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2015-03-27 04:47:29 +00:00
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static const int ARRAY = Type_number["array"];
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if (r.types[0] == ARRAY) {
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assert(r.types.size() > 1);
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// skip the 'array' type to get at the element type
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return 1 + Memory[r.value]*size_of(array_element(r.types));
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2015-03-27 03:24:38 +00:00
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}
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2015-02-22 09:32:24 +00:00
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2015-04-18 06:24:52 +00:00
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//:: To access elements of an array, use 'index'
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2015-04-24 17:19:03 +00:00
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:(scenario index)
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2015-03-27 04:47:29 +00:00
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recipe main [
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1:integer <- copy 3:literal
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2:integer <- copy 14:literal
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3:integer <- copy 15:literal
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4:integer <- copy 16:literal
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5:integer <- index 1:array:integer, 0:literal
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]
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+run: instruction main/4
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+run: address to copy is 2
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+run: its type is 1
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+mem: location 2 is 14
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+run: product 0 is 14
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+mem: storing 14 in location 5
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2015-04-24 17:19:03 +00:00
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:(scenario index_direct_offset)
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2015-04-03 19:49:11 +00:00
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recipe main [
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1:integer <- copy 3:literal
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2:integer <- copy 14:literal
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3:integer <- copy 15:literal
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4:integer <- copy 16:literal
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5:integer <- copy 0:literal
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6:integer <- index 1:array:integer, 5:integer
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]
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+run: instruction main/5
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+run: address to copy is 2
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+run: its type is 1
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+mem: location 2 is 14
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+run: product 0 is 14
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+mem: storing 14 in location 6
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2015-04-17 17:31:17 +00:00
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:(before "End Primitive Recipe Declarations")
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INDEX,
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2015-02-22 09:32:24 +00:00
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:(before "End Primitive Recipe Numbers")
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Recipe_number["index"] = INDEX;
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:(before "End Primitive Recipe Implementations")
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case INDEX: {
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2015-03-27 04:47:29 +00:00
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static const int ARRAY = Type_number["array"];
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2015-04-03 19:49:11 +00:00
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//? if (Trace_stream) Trace_stream->dump_layer = "run"; //? 1
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2015-04-25 03:07:17 +00:00
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trace("run") << "ingredient 0 is " << current_instruction().ingredients[0].to_string();
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reagent base = canonize(current_instruction().ingredients[0]);
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2015-04-18 04:51:13 +00:00
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//? trace("run") << "ingredient 0 after canonize: " << base.to_string(); //? 1
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2015-03-17 18:23:29 +00:00
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int base_address = base.value;
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2015-03-27 04:47:29 +00:00
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assert(base.types[0] == ARRAY);
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2015-04-25 03:07:17 +00:00
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trace("run") << "ingredient 1 is " << current_instruction().ingredients[1].to_string();
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reagent offset = canonize(current_instruction().ingredients[1]);
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2015-04-18 04:51:13 +00:00
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//? trace("run") << "ingredient 1 after canonize: " << offset.to_string(); //? 1
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2015-04-03 19:49:11 +00:00
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vector<int> offset_val(read_memory(offset));
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2015-03-27 04:47:29 +00:00
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vector<type_number> element_type = array_element(base.types);
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2015-04-18 04:51:13 +00:00
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//? trace("run") << "offset: " << offset_val[0]; //? 1
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//? trace("run") << "size of elements: " << size_of(element_type); //? 1
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2015-04-03 19:49:11 +00:00
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int src = base_address + 1 + offset_val[0]*size_of(element_type);
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2015-02-22 09:32:24 +00:00
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trace("run") << "address to copy is " << src;
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2015-03-27 04:47:29 +00:00
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trace("run") << "its type is " << element_type[0];
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2015-03-26 02:06:32 +00:00
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reagent tmp;
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2015-03-22 00:53:20 +00:00
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tmp.set_value(src);
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2015-03-27 04:47:29 +00:00
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copy(element_type.begin(), element_type.end(), inserter(tmp.types, tmp.types.begin()));
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2015-04-18 04:51:13 +00:00
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//? trace("run") << "AAA: " << tmp.to_string() << '\n'; //? 3
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2015-02-22 09:32:24 +00:00
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vector<int> result(read_memory(tmp));
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trace("run") << "product 0 is " << result[0];
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2015-04-25 03:07:17 +00:00
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write_memory(current_instruction().products[0], result);
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2015-04-03 19:49:11 +00:00
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//? if (Trace_stream) Trace_stream->dump_layer = ""; //? 1
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2015-02-22 09:32:24 +00:00
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break;
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}
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2015-03-27 04:47:29 +00:00
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:(code)
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vector<type_number> array_element(const vector<type_number>& types) {
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return vector<type_number>(++types.begin(), types.end());
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}
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2015-04-24 17:19:03 +00:00
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:(scenario index_address)
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2015-02-22 09:32:24 +00:00
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recipe main [
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1:integer <- copy 3:literal
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2:integer <- copy 14:literal
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3:integer <- copy 15:literal
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4:integer <- copy 16:literal
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2015-03-27 04:47:29 +00:00
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5:integer <- index-address 1:array:integer, 0:literal
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2015-02-22 09:32:24 +00:00
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]
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2015-02-25 09:24:11 +00:00
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+run: instruction main/4
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2015-02-22 09:32:24 +00:00
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+run: address to copy is 2
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2015-03-27 04:47:29 +00:00
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+mem: storing 2 in location 5
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2015-02-22 09:32:24 +00:00
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2015-04-18 06:24:52 +00:00
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//:: To write to elements of containers, you need their address.
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2015-04-17 17:31:17 +00:00
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2015-04-24 17:19:03 +00:00
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:(scenario index_indirect)
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2015-04-17 17:31:17 +00:00
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recipe main [
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1:integer <- copy 3:literal
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2:integer <- copy 14:literal
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3:integer <- copy 15:literal
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4:integer <- copy 16:literal
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5:address:array:integer <- copy 1:literal
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6:integer <- index 5:address:array:integer/deref, 1:literal
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]
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+run: instruction main/5
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+mem: storing 15 in location 6
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:(before "End Primitive Recipe Declarations")
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INDEX_ADDRESS,
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2015-02-22 09:32:24 +00:00
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:(before "End Primitive Recipe Numbers")
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Recipe_number["index-address"] = INDEX_ADDRESS;
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:(before "End Primitive Recipe Implementations")
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case INDEX_ADDRESS: {
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2015-03-27 04:47:29 +00:00
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static const int ARRAY = Type_number["array"];
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2015-04-25 03:07:17 +00:00
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trace("run") << "ingredient 0 is " << current_instruction().ingredients[0].name;
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reagent base = canonize(current_instruction().ingredients[0]);
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2015-03-17 18:23:29 +00:00
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int base_address = base.value;
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2015-03-27 04:47:29 +00:00
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assert(base.types[0] == ARRAY);
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2015-04-25 03:07:17 +00:00
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trace("run") << "ingredient 1 is " << current_instruction().ingredients[1].to_string();
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reagent offset = canonize(current_instruction().ingredients[1]);
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2015-04-03 19:49:11 +00:00
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vector<int> offset_val(read_memory(offset));
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2015-03-27 04:47:29 +00:00
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vector<type_number> element_type = array_element(base.types);
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2015-04-03 19:49:11 +00:00
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int src = base_address + 1 + offset_val[0]*size_of(element_type);
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2015-02-22 09:32:24 +00:00
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trace("run") << "address to copy is " << src;
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vector<int> result;
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result.push_back(src);
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trace("run") << "product 0 is " << result[0];
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2015-04-25 03:07:17 +00:00
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write_memory(current_instruction().products[0], result);
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2015-02-22 09:32:24 +00:00
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break;
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}
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