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author | Kartik K. Agaram <vc@akkartik.com> | 2015-07-03 18:07:38 -0700 |
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committer | Kartik K. Agaram <vc@akkartik.com> | 2015-07-03 18:11:25 -0700 |
commit | 608d5c9aa148801081d7dca80b6f3bfb5b285f08 (patch) | |
tree | 8f24ec8efb2c2b5081c068b90537913cef86973d /034exclusive_container.cc | |
parent | 7e867a045e29a37d66eedce03c95a2feb979411a (diff) | |
download | mu-608d5c9aa148801081d7dca80b6f3bfb5b285f08.tar.gz |
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Diffstat (limited to '034exclusive_container.cc')
-rw-r--r-- | 034exclusive_container.cc | 145 |
1 files changed, 0 insertions, 145 deletions
diff --git a/034exclusive_container.cc b/034exclusive_container.cc deleted file mode 100644 index 08aaf3f7..00000000 --- a/034exclusive_container.cc +++ /dev/null @@ -1,145 +0,0 @@ -//: Exclusive containers contain exactly one of a fixed number of 'variants' -//: of different types. -//: -//: They also implicitly contain a tag describing precisely which variant is -//: currently stored in them. - -:(before "End Mu Types Initialization") -//: We'll use this container as a running example, with two number elements. -{ -type_number tmp = Type_number["number-or-point"] = Next_type_number++; -Type[tmp].size = 2; -Type[tmp].kind = exclusive_container; -Type[tmp].name = "number-or-point"; -//? cout << tmp << ": " << SIZE(Type[tmp].elements) << '\n'; //? 1 -vector<type_number> t1; -t1.push_back(number); -Type[tmp].elements.push_back(t1); -//? cout << SIZE(Type[tmp].elements) << '\n'; //? 1 -vector<type_number> t2; -t2.push_back(point); -Type[tmp].elements.push_back(t2); -//? cout << SIZE(Type[tmp].elements) << '\n'; //? 1 -//? cout << "point: " << point << '\n'; //? 1 -Type[tmp].element_names.push_back("i"); -Type[tmp].element_names.push_back("p"); -} - -//: Tests in this layer often explicitly setup memory before reading it as an -//: array. Don't do this in general. I'm tagging exceptions with /raw to -//: avoid warnings. -:(scenario copy_exclusive_container) -# Copying exclusive containers copies all their contents and an extra location for the tag. -recipe main [ - 1:number <- copy 1:literal # 'point' variant - 2:number <- copy 34:literal - 3:number <- copy 35:literal - 4:number-or-point <- copy 1:number-or-point/raw # unsafe -] -+mem: storing 1 in location 4 -+mem: storing 34 in location 5 -+mem: storing 35 in location 6 - -:(before "End size_of(types) Cases") -if (t.kind == exclusive_container) { - // size of an exclusive container is the size of its largest variant - // (So like containers, it can't contain arrays.) -//? cout << "--- " << types.at(0) << ' ' << t.size << '\n'; //? 1 -//? cout << "point: " << Type_number["point"] << " " << Type[Type_number["point"]].name << " " << Type[Type_number["point"]].size << '\n'; //? 1 -//? cout << t.name << ' ' << t.size << ' ' << SIZE(t.elements) << '\n'; //? 1 - long long int result = 0; - for (long long int i = 0; i < t.size; ++i) { - long long int tmp = size_of(t.elements.at(i)); -//? cout << i << ": " << t.elements.at(i).at(0) << ' ' << tmp << ' ' << result << '\n'; //? 1 - if (tmp > result) result = tmp; - } - // ...+1 for its tag. - return result+1; -} - -//:: To access variants of an exclusive container, use 'maybe-convert'. -//: It always returns an address (so that you can modify it) or null (to -//: signal that the conversion failed (because the container contains a -//: different variant). - -//: 'maybe-convert' requires a literal in ingredient 1. We'll use a synonym -//: called 'variant'. -:(before "End Mu Types Initialization") -Type_number["variant"] = 0; - -:(scenario maybe_convert) -recipe main [ - 12:number <- copy 1:literal - 13:number <- copy 35:literal - 14:number <- copy 36:literal - 20:address:point <- maybe-convert 12:number-or-point/raw, 1:variant # unsafe -] -+mem: storing 13 in location 20 - -:(scenario maybe_convert_fail) -recipe main [ - 12:number <- copy 1:literal - 13:number <- copy 35:literal - 14:number <- copy 36:literal - 20:address:point <- maybe-convert 12:number-or-point/raw, 0:variant # unsafe -] -+mem: storing 0 in location 20 - -:(before "End Primitive Recipe Declarations") -MAYBE_CONVERT, -:(before "End Primitive Recipe Numbers") -Recipe_number["maybe-convert"] = MAYBE_CONVERT; -:(before "End Primitive Recipe Implementations") -case MAYBE_CONVERT: { - reagent base = canonize(current_instruction().ingredients.at(0)); - long long int base_address = base.value; - type_number base_type = base.types.at(0); - assert(Type[base_type].kind == exclusive_container); - assert(is_literal(current_instruction().ingredients.at(1))); - long long int tag = current_instruction().ingredients.at(1).value; - long long int result; - if (tag == static_cast<long long int>(Memory[base_address])) { - result = base_address+1; - } - else { - result = 0; - } - products.resize(1); - products.at(0).push_back(result); - break; -} - -//:: Allow exclusive containers to be defined in mu code. - -:(scenario exclusive_container) -exclusive-container foo [ - x:number - y:number -] -+parse: reading exclusive-container foo -+parse: element name: x -+parse: type: 1 -+parse: element name: y -+parse: type: 1 - -:(before "End Command Handlers") -else if (command == "exclusive-container") { - insert_container(command, exclusive_container, in); -} - -//:: To construct exclusive containers out of variant types, use 'merge'. -:(scenario lift_to_exclusive_container) -exclusive-container foo [ - x:number - y:number -] - -recipe main [ - 1:number <- copy 34:literal - 2:foo <- merge 0:literal/x, 1:number - 4:foo <- merge 1:literal/x, 1:number -] -+mem: storing 0 in location 2 -+mem: storing 34 in location 3 -+mem: storing 1 in location 4 -+mem: storing 34 in location 5 |