Add init and install scripts - grus - Grus is a simple word unjumbler written in Go

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author	Andinus <andinus@nand.sh>	2020-04-07 01:00:13 +0530
committer	Andinus <andinus@nand.sh>	2020-04-07 01:00:13 +0530
commit	cd4325250d64799ef328c51ddc36ab0a14d1e640 (patch)
tree	7e613a7e48a11dd08f4d4f0fdc90fbc9a7b70025 /lexical/sort.go
parent	0a6d510d2add0e46e890cc6fcac39d3080ba689b (diff)
download	grus-cd4325250d64799ef328c51ddc36ab0a14d1e640.tar.gz

Add init and install scripts

Diffstat (limited to 'lexical/sort.go')

0 files changed, 0 insertions, 0 deletions

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//: Ingredients of a recipe are meant to be immutable unless they're also //: products. This layer will start enforcing this check. //: //: One hole for now: variables in surrounding spaces are implicitly mutable. //: [tag: todo] void test_can_modify_ingredients_that_are_also_products() { run( // mutable container "def main [\n" " local-scope\n" " p:point <- merge 34, 35\n" " p <- foo p\n" "]\n" "def foo p:point -> p:point [\n" " local-scope\n" " load-ingredients\n" " p <- put p, x:offset, 34\n" "]\n" ); CHECK_TRACE_COUNT("error", 0); } void test_can_modify_ingredients_that_are_also_products_2() { run( "def main [\n" " local-scope\n" " p:&:point <- new point:type\n" " p <- foo p\n" "]\n" // mutable address to container "def foo p:&:point -> p:&:point [\n" " local-scope\n" " load-ingredients\n" " *p <- put *p, x:offset, 34\n" "]\n" ); CHECK_TRACE_COUNT("error", 0); } void test_can_modify_ingredients_that_are_also_products_3() { run( "def main [\n" " local-scope\n" " p:&:@:num <- new number:type, 3\n" " p <- foo p\n" "]\n" // mutable address "def foo p:&:@:num -> p:&:@:num [\n" " local-scope\n" " load-ingredients\n" " *p <- put-index *p, 0, 34\n" "]\n" ); CHECK_TRACE_COUNT("error", 0); } void test_ignore_literal_ingredients_for_immutability_checks() { run( "def main [\n" " local-scope\n" " p:&:d1 <- new d1:type\n" " q:num <- foo p\n" "]\n" "def foo p:&:d1 -> q:num [\n" " local-scope\n" " load-ingredients\n" " x:&:d1 <- new d1:type\n" " *x <- put *x, p:offset, 34\n" // ignore this 'p' " return 36\n" "]\n" "container d1 [\n" " p:num\n" " q:num\n" "]\n" ); CHECK_TRACE_COUNT("error", 0); } void test_cannot_modify_immutable_ingredients() { Hide_errors = true; run( "def main [\n" " local-scope\n" " x:&:num <- new number:type\n" " foo x\n" "]\n" // immutable address to primitive "def foo x:&:num [\n" " local-scope\n" " load-ingredients\n" " *x <- copy 34\n" "]\n" ); CHECK_TRACE_CONTENTS( "error: foo: cannot modify 'x' in instruction '*x <- copy 34' because it's an ingredient of recipe foo but not also a product\n" ); } void test_cannot_modify_immutable_containers() { Hide_errors = true; run( "def main [\n" " local-scope\n" " x:point-number <- merge 34, 35, 36\n" " foo x\n" "]\n" // immutable container "def foo x:point-number [\n" " local-scope\n" " load-ingredients\n" // copy an element: ok " y:point <- get x, xy:offset\n" // modify the element: boom // This could be ok if y contains no addresses, but we're not going to try to be that smart. // It also makes the rules easier to reason about. If it's just an ingredient, just don't try to change it. " y <- put y, x:offset, 37\n" "]\n" ); CHECK_TRACE_CONTENTS( "error: foo: cannot modify 'y' in instruction 'y <- put y, x:offset, 37' because that would modify 'x' which is an ingredient of recipe foo but not also a product\n" ); } void test_can_modify_immutable_pointers() { run( "def main [\n" " local-scope\n" " x:&:num <- new number:type\n" " foo x\n" "]\n" "def foo x:&:num [\n" " local-scope\n" " load-ingredients\n" // modify the address, not the payload " x <- copy null\n" "]\n" ); CHECK_TRACE_COUNT("error", 0); } void test_can_modify_immutable_pointers_but_not_their_payloads() { Hide_errors = true; run( "def main [\n" " local-scope\n" " x:&:num <- new number:type\n" " foo x\n" "]\n" "def foo x:&:num [\n" " local-scope\n" " load-ingredients\n" // modify address: ok " x <- new number:type\n" // modify payload: boom // this could be ok, but we're not going to try to be that smart " *x <- copy 34\n" "]\n" ); CHECK_TRACE_CONTENTS( "error: foo: cannot modify 'x' in instruction '*x <- copy 34' because it's an ingredient of recipe foo but not also a product\n" ); } void test_cannot_call_mutating_recipes_on_immutable_ingredients() { Hide_errors = true; run( "def main [\n" " local-scope\n" " p:&:point <- new point:type\n" " foo p\n" "]\n" "def foo p:&:point [\n" " local-scope\n" " load-ingredients\n" " bar p\n" "]\n" "def bar p:&:point -> p:&:point [\n" " local-scope\n" " load-ingredients\n" // p could be modified here, but it doesn't have to be; it's already // marked mutable in the header "]\n" ); CHECK_TRACE_CONTENTS( "error: foo: cannot modify 'p' in instruction 'bar p' because it's an ingredient of recipe foo but not also a product\n" ); } void test_cannot_modify_copies_of_immutable_ingredients() { Hide_errors = true; run( "def main [\n" " local-scope\n" " p:&:point <- new point:type\n" " foo p\n" "]\n" "def foo p:&:point [\n" " local-scope\n" " load-ingredients\n" " q:&:point <- copy p\n" " *q <- put *q, x:offset, 34\n" "]\n" ); CHECK_TRACE_CONTENTS( "error: foo: cannot modify 'q' in instruction '*q <- put *q, x:offset, 34' because that would modify p which is an ingredient of recipe foo but not also a product\n" ); } void test_can_modify_copies_of_mutable_ingredients() { run( "def main [\n" " local-scope\n" " p:&:point <- new point:type\n" " foo p\n" "]\n" "def foo p:&:point -> p:&:point [\n" " local-scope\n" " load-ingredients\n" " q:&:point <- copy p\n" " *q <- put *q, x:offset, 34\n" "]\n" ); CHECK_TRACE_COUNT("error", 0); } void test_cannot_modify_address_inside_immutable_ingredients() { Hide_errors = true; run( "container foo [\n" " x:&:@:num\n" // contains an address "]\n" "def main [\n" "]\n" "def foo a:&:foo [\n" " local-scope\n" " load-ingredients\n" " x:&:@:num <- get *a, x:offset\n" // just a regular get of the container " *x <- put-index *x, 0, 34\n" // but then a put-index on the result "]\n" ); CHECK_TRACE_CONTENTS( "error: foo: cannot modify 'x' in instruction '*x <- put-index *x, 0, 34' because that would modify a which is an ingredient of recipe foo but not also a product\n" ); } void test_cannot_modify_address_inside_immutable_ingredients_2() { run( "container foo [\n" " x:&:@:num\n" // contains an address "]\n" "def main [\n" // don't run anything "]\n" "def foo a:&:foo [\n" " local-scope\n" " load-ingredients\n" " b:foo <- merge null\n" // modify b, completely unrelated to immutable ingredient a " x:&:@:num <- get b, x:offset\n" " *x <- put-index *x, 0, 34\n" "]\n" ); CHECK_TRACE_COUNT("error", 0); } void test_cannot_modify_address_inside_immutable_ingredients_3() { Hide_errors = true; run( "def main [\n" // don't run anything "]\n" "def foo a:&:@:&:num [\n" " local-scope\n" " load-ingredients\n" " x:&:num <- index *a, 0\n" // just a regular index of the array " *x <- copy 34\n" // but then modify the result "]\n" ); CHECK_TRACE_CONTENTS( "error: foo: cannot modify 'x' in instruction '*x <- copy 34' because that would modify a which is an ingredient of recipe foo but not also a product\n" ); } void test_cannot_modify_address_inside_immutable_ingredients_4() { run( "def main [\n" // don't run anything "]\n" "def foo a:&:@:&:num [\n" " local-scope\n" " load-ingredients\n" " b:&:@:&:num <- new {(address number): type}, 3\n" // modify b, completely unrelated to immutable ingredient a " x:&:num <- index *b, 0\n" " *x <- copy 34\n" "]\n" ); CHECK_TRACE_COUNT("error", 0); } void test_latter_ingredient_of_index_is_immutable() { run( "def main [\n" // don't run anything "]\n" "def foo a:&:@:&:@:num, b:num -> a:&:@:&:@:num [\n" " local-scope\n" " load-ingredients\n" " x:&:@:num <- index *a, b\n" " *x <- put-index *x, 0, 34\n" "]\n" ); CHECK_TRACE_COUNT("error", 0); } void test_can_traverse_immutable_ingredients() { run( "container test-list [\n" " next:&:test-list\n" "]\n" "def main [\n" " local-scope\n" " p:&:test-list <- new test-list:type\n" " foo p\n" "]\n" "def foo p:&:test-list [\n" " local-scope\n" " load-ingredients\n" " p2:&:test-list <- bar p\n" "]\n" "def bar x:&:test-list -> y:&:test-list [\n" " local-scope\n" " load-ingredients\n" " y <- get *x, next:offset\n" "]\n" ); CHECK_TRACE_COUNT("error", 0); } void test_treat_optional_ingredients_as_mutable() { run( "def main [\n" " k:&:num <- new number:type\n" " test k\n" "]\n" // recipe taking an immutable address ingredient "def test k:&:num [\n" " local-scope\n" " load-ingredients\n" " foo k\n" "]\n" // ..calling a recipe with an optional address ingredient "def foo -> [\n" " local-scope\n" " load-ingredients\n" " k:&:num, found?:bool <- next-ingredient\n" // we don't further check k for immutability, but assume it's mutable "]\n" ); CHECK_TRACE_COUNT("error", 0); } void test_treat_optional_ingredients_as_mutable_2() { Hide_errors = true; run( "def main [\n" " local-scope\n" " p:&:point <- new point:type\n" " foo p\n" "]\n" "def foo p:&:point [\n" " local-scope\n" " load-ingredients\n" " bar p\n" "]\n" "def bar [\n" " local-scope\n" " load-ingredients\n" " p:&:point <- next-ingredient\n" // optional ingredient; assumed to be mutable "]\n" ); CHECK_TRACE_CONTENTS( "error: foo: cannot modify 'p' in instruction 'bar p' because it's an ingredient of recipe foo but not also a product\n" ); } //: when checking for immutable ingredients, remember to take space into account void test_check_space_of_reagents_in_immutability_checks() { run( "def main [\n" " a:space/names:new-closure <- new-closure\n" " b:&:num <- new number:type\n" " run-closure b:&:num, a:space\n" "]\n" "def new-closure [\n" " local-scope\n" " x:&:num <- new number:type\n" " return default-space/names:new-closure\n" "]\n" "def run-closure x:&:num, s:space/names:new-closure [\n" " local-scope\n" " load-ingredients\n" " 0:space/names:new-closure <- copy s\n" // different space; always mutable " *x:&:num/space:1 <- copy 34\n" "]\n" ); CHECK_TRACE_COUNT("error", 0); } :(before "End Transforms") Transform.push_back(check_immutable_ingredients); // idempotent :(code) void check_immutable_ingredients(const recipe_ordinal r) { // to ensure an address reagent isn't modified, it suffices to show that // a) we never write to its contents directly, // b) we never call 'put' or 'put-index' on it, and // c) any non-primitive recipe calls in the body aren't returning it as a product const recipe& caller = get(Recipe, r); trace(101, "transform") << "--- check mutability of ingredients in recipe " << caller.name << end(); if (!caller.has_header) return; // skip check for old-style recipes calling next-ingredient directly for (int i = 0; i < SIZE(caller.ingredients); ++i) { const reagent& current_ingredient = caller.ingredients.at(i); if (is_present_in_products(caller, current_ingredient.name)) continue; // not expected to be immutable // End Immutable Ingredients Special-cases set<reagent, name_and_space_lt> immutable_vars; immutable_vars.insert(current_ingredient); for (int i = 0; i < SIZE(caller.steps); ++i) { const instruction& inst = caller.steps.at(i); check_immutable_ingredient_in_instruction(inst, immutable_vars, current_ingredient.name, caller); if (inst.operation == INDEX && SIZE(inst.ingredients) > 1 && inst.ingredients.at(1).name == current_ingredient.name) continue; update_aliases(inst, immutable_vars); } } } void update_aliases(const instruction& inst, set<reagent, name_and_space_lt>& current_ingredient_and_aliases) { set<int> current_ingredient_indices = ingredient_indices(inst, current_ingredient_and_aliases); if (!contains_key(Recipe, inst.operation)) { // primitive recipe switch (inst.operation) { case COPY: for (set<int>::iterator p = current_ingredient_indices.begin(); p != current_ingredient_indices.end(); ++p) current_ingredient_and_aliases.insert(inst.products.at(*p).name); break; case GET: case INDEX: case MAYBE_CONVERT: // current_ingredient_indices can only have 0 or one value if (!current_ingredient_indices.empty() && !inst.products.empty()) { if (is_mu_address(inst.products.at(0)) || is_mu_container(inst.products.at(0)) || is_mu_exclusive_container(inst.products.at(0))) current_ingredient_and_aliases.insert(inst.products.at(0)); } break; default: break; } } else { // defined recipe set<int> contained_in_product_indices = scan_contained_in_product_indices(inst, current_ingredient_indices); for (set<int>::iterator p = contained_in_product_indices.begin(); p != contained_in_product_indices.end(); ++p) { if (*p < SIZE(inst.products)) current_ingredient_and_aliases.insert(inst.products.at(*p)); } } } set<int> scan_contained_in_product_indices(const instruction& inst, set<int>& ingredient_indices) { set<reagent, name_and_space_lt> selected_ingredients; const recipe& callee = get(Recipe, inst.operation); for (set<int>::iterator p = ingredient_indices.begin(); p != ingredient_indices.end(); ++p) { if (*p >= SIZE(callee.ingredients)) continue; // optional immutable ingredient selected_ingredients.insert(callee.ingredients.at(*p)); } set<int> result; for (int i = 0; i < SIZE(callee.products); ++i) { const reagent& current_product = callee.products.at(i); const string_tree* contained_in_name = property(current_product, "contained-in"); if (contained_in_name && selected_ingredients.find(contained_in_name->value) != selected_ingredients.end()) result.insert(i); } return result; } bool is_mu_container(const reagent& r) { return is_mu_container(r.type); } bool is_mu_container(const type_tree* type) { if (!type) return false; if (!type->atom) return is_mu_container(get_base_type(type)); if (type->value == 0) return false; if (!contains_key(Type, type->value)) return false; // error raised elsewhere type_info& info = get(Type, type->value); return info.kind == CONTAINER; } bool is_mu_exclusive_container(const reagent& r) { return is_mu_exclusive_container(r.type); } bool is_mu_exclusive_container(const type_tree* type) { if (!type) return false; if (!type->atom) return is_mu_exclusive_container(get_base_type(type)); if (type->value == 0) return false; if (!contains_key(Type, type->value)) return false; // error raised elsewhere type_info& info = get(Type, type->value); return info.kind == EXCLUSIVE_CONTAINER; } :(before "End Types") // reagent comparison -- only in the context of a single recipe struct name_and_space_lt { bool operator()(const reagent& a, const reagent& b) const; }; :(code) bool name_and_space_lt::operator()(const reagent& a, const reagent& b) const { int aspace = 0, bspace = 0; if (has_property(a, "space")) aspace = to_integer(property(a, "space")->value); if (has_property(b, "space")) bspace = to_integer(property(b, "space")->value); if (aspace != bspace) return aspace < bspace; return a.name < b.name; } void test_immutability_infects_contained_in_variables() { Hide_errors = true; transform( "container test-list [\n" " value:num\n" " next:&:test-list\n" "]\n" "def main [\n" " local-scope\n" " p:&:test-list <- new test-list:type\n" " foo p\n" "]\n" "def foo p:&:test-list [\n" // p is immutable " local-scope\n" " load-ingredients\n" " p2:&:test-list <- test-next p\n" // p2 is immutable " *p2 <- put *p2, value:offset, 34\n" "]\n" "def test-next x:&:test-list -> y:&:test-list/contained-in:x [\n" " local-scope\n" " load-ingredients\n" " y <- get *x, next:offset\n" "]\n" ); CHECK_TRACE_CONTENTS( "error: foo: cannot modify 'p2' in instruction '*p2 <- put *p2, value:offset, 34' because that would modify p which is an ingredient of recipe foo but not also a product\n" ); } void check_immutable_ingredient_in_instruction(const instruction& inst, const set<reagent, name_and_space_lt>& current_ingredient_and_aliases, const string& original_ingredient_name, const recipe& caller) { // first check if the instruction is directly modifying something it shouldn't for (int i = 0; i < SIZE(inst.products); ++i) { if (has_property(inst.products.at(i), "lookup") && current_ingredient_and_aliases.find(inst.products.at(i)) != current_ingredient_and_aliases.end()) { string current_product_name = inst.products.at(i).name; if (current_product_name == original_ingredient_name) raise << maybe(caller.name) << "cannot modify '" << current_product_name << "' in instruction '" << to_original_string(inst) << "' because it's an ingredient of recipe " << caller.name << " but not also a product\n" << end(); else raise << maybe(caller.name) << "cannot modify '" << current_product_name << "' in instruction '" << to_original_string(inst) << "' because that would modify " << original_ingredient_name << " which is an ingredient of recipe " << caller.name << " but not also a product\n" << end(); return; } } // check if there's any indirect modification going on set<int> current_ingredient_indices = ingredient_indices(inst, current_ingredient_and_aliases); if (current_ingredient_indices.empty()) return; // ingredient not found in call for (set<int>::iterator p = current_ingredient_indices.begin(); p != current_ingredient_indices.end(); ++p) { const int current_ingredient_index = *p; reagent current_ingredient = inst.ingredients.at(current_ingredient_index); canonize_type(current_ingredient); const string& current_ingredient_name = current_ingredient.name; if (!contains_key(Recipe, inst.operation)) { // primitive recipe // we got here only because we got an instruction with an implicit product, and the instruction didn't explicitly spell it out // put x, y:offset, z // instead of // x <- put x, y:offset, z if (inst.operation == PUT || inst.operation == PUT_INDEX) { if (current_ingredient_index == 0) { if (current_ingredient_name == original_ingredient_name) raise << maybe(caller.name) << "cannot modify '" << current_ingredient_name << "' in instruction '" << to_original_string(inst) << "' because it's an ingredient of recipe " << caller.name << " but not also a product\n" << end(); else raise << maybe(caller.name) << "cannot modify '" << current_ingredient_name << "' in instruction '" << to_original_string(inst) << "' because that would modify '" << original_ingredient_name << "' which is an ingredient of recipe " << caller.name << " but not also a product\n" << end(); } } } else { // defined recipe if (is_modified_in_recipe(inst.operation, current_ingredient_index, caller)) { if (current_ingredient_name == original_ingredient_name) raise << maybe(caller.name) << "cannot modify '" << current_ingredient_name << "' in instruction '" << to_original_string(inst) << "' because it's an ingredient of recipe " << caller.name << " but not also a product\n" << end(); else raise << maybe(caller.name) << "cannot modify '" << current_ingredient_name << "' in instruction '" << to_original_string(inst) << "' because that would modify '" << original_ingredient_name << "' which is an ingredient of recipe " << caller.name << " but not also a product\n" << end(); } } } } bool is_modified_in_recipe(const recipe_ordinal r, const int ingredient_index, const recipe& caller) { const recipe& callee = get(Recipe, r); if (!callee.has_header) { raise << maybe(caller.name) << "can't check mutability of ingredients in recipe " << callee.name << " because it uses 'next-ingredient' directly, rather than a recipe header.\n" << end(); return true; } if (ingredient_index >= SIZE(callee.ingredients)) return false; // optional immutable ingredient return is_present_in_products(callee, callee.ingredients.at(ingredient_index).name); } bool is_present_in_products(const recipe& callee, const string& ingredient_name) { for (int i = 0; i < SIZE(callee.products); ++i) { if (callee.products.at(i).name == ingredient_name) return true; } return false; } set<int> ingredient_indices(const instruction& inst, const set<reagent, name_and_space_lt>& ingredient_names) { set<int> result; for (int i = 0; i < SIZE(inst.ingredients); ++i) { if (is_literal(inst.ingredients.at(i))) continue; if (ingredient_names.find(inst.ingredients.at(i)) != ingredient_names.end()) result.insert(i); } return result; } //: Sometimes you want to pass in two addresses, one pointing inside the //: other. For example, you want to delete a node from a linked list. You //: can't pass both pointers back out, because if a caller tries to make both //: identical then you can't tell which value will be written on the way out. //: //: Experimental solution: just tell Mu that one points inside the other. //: This way we can return just one pointer as high up as necessary to capture //: all modifications performed by a recipe. //: //: We'll see if we end up wanting to abuse /contained-in for other reasons. void test_can_modify_contained_in_addresses() { transform( "container test-list [\n" " value:num\n" " next:&:test-list\n" "]\n" "def main [\n" " local-scope\n" " p:&:test-list <- new test-list:type\n" " foo p\n" "]\n" "def foo p:&:test-list -> p:&:test-list [\n" " local-scope\n" " load-ingredients\n" " p2:&:test-list <- test-next p\n" " p <- test-remove p2, p\n" "]\n" "def test-next x:&:test-list -> y:&:test-list [\n" " local-scope\n" " load-ingredients\n" " y <- get *x, next:offset\n" "]\n" "def test-remove x:&:test-list/contained-in:from, from:&:test-list -> from:&:test-list [\n" " local-scope\n" " load-ingredients\n" " *x <- put *x, value:offset, 34\n" // can modify x "]\n" ); CHECK_TRACE_COUNT("error", 0); } :(before "End Immutable Ingredients Special-cases") if (has_property(current_ingredient, "contained-in")) { const string_tree* tmp = property(current_ingredient, "contained-in"); if (!tmp->atom || (!is_present_in_ingredients(caller, tmp->value) && !is_present_in_products(caller, tmp->value))) { raise << maybe(caller.name) << "/contained-in can only point to another ingredient or product, but got '" << to_string(property(current_ingredient, "contained-in")) << "'\n" << end(); } continue; } :(code) void test_contained_in_product() { transform( "container test-list [\n" " value:num\n" " next:&:test-list\n" "]\n" "def foo x:&:test-list/contained-in:result -> result:&:test-list [\n" " local-scope\n" " load-ingredients\n" " result <- copy null\n" "]\n" ); CHECK_TRACE_COUNT("error", 0); } void test_contained_in_is_mutable() { transform( "container test-list [\n" " value:num\n" " next:&:test-list\n" "]\n" "def foo x:&:test-list/contained-in:result -> result:&:test-list [\n" " local-scope\n" " load-ingredients\n" " result <- copy x\n" " put *x, value:offset, 34\n" "]\n" ); CHECK_TRACE_COUNT("error", 0); }


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