sophia/test/contracts/polymorphism_variance_switching.aes
Gaith Hallak e46226a693
Polymorphism support (#357)
* Add polymorphism to syntax tree and parser

* Add polymorphism to infer types

* Fix pretty printing

* Add new tests and fix old tests

* Fix the comparison between unit and empty tuple

* Report undefined interface errors before checking implemented interfaces

* Add test for implementing multiple interfaces

* Add test for implementing two interfaces with entrypoints of same names and different types

* Add tests for interfaces implementing interfaces

* Draft: Add variance switching

* Revert "Draft: Add variance switching"

This reverts commit 92dc6ac169cfbff447ed59de04994f564876b3fb.

* Add variance switching

* Fix broken tests

* Fix broken abi tests

* Add tests for variance switching

* Fix tests after rebase

* Variance switching for custom datatypes

* Fix dialyzer warning

* Add testing for custom types variance switching

* Make opposite_variance a separate function

* Make is_subtype/4 a separate function

* Fix warning

* Mark tvars as invariant

* Add type_vars_uvar ets table to ets_tables()

* Don't destroy and recreate type errors table when not needed

* Fixes from the reviews

* Use is_list to check if a var is a list

* Compare named args in fun_t

* Test only for covariance and contravariance

* Remove arrows_in_type and use infer_type_vars_variance instead

* Add tests for option and type aliases

* Fix previous commit

* Rename check_implemented_interfaces_recursive to check_implemented_interfaces1

* Make interfaces declare functions from extended interfaces

* Restore test.aes

* Add test for variance switching in records

* Enable variance switching for record types

* Handle builtin types type variables separately

* Add tests for oracles and oracle queries

* Replace compare_types with non-throwing version of unify

* Add the context to unification error

* Test variance switching for bivariant records

* Give clear names to the records in records variance switching test

* Handle comments about polymorphism_variance_switching.aes

* Rename datatypes in custom types variance switching test for readability

* Change the variance of the oracle_query type vars

* Add test for accessing maps with the wrong type

* Default to invariant when the variance of the type vars is unknown

* Rename test files to have common prefix

* Rename functions in variance switching tests for readability

* Fix variance inference

* Eliminate redundant tests

* Test all cases for bivariant
2022-06-17 13:09:07 +04:00

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contract interface Creature =
entrypoint is_alive : () => bool
contract interface Animal : Creature =
entrypoint is_alive : () => bool
entrypoint sound : () => string
contract Cat : Animal =
entrypoint sound() = "meow"
entrypoint is_alive() = true
main contract Main =
entrypoint init() = ()
stateful function g0(_ : Creature) : Cat = Chain.create()
stateful function f0(x : Cat) : Creature = g0(x)
stateful function h0() =
let a : Animal = (Chain.create() : Cat)
let c : Creature = (Chain.create() : Cat)
let c1 : Creature = a
()
stateful function g1(x : Animal) : Cat = Chain.create()
stateful function f1(x : Cat) : Animal = g1(x)
stateful function g11(x : list(Animal)) : list(Cat) = [Chain.create()]
stateful function f11(x : list(Cat)) : list(Animal) = g11(x)
stateful function g12(x : Animal * Animal) : Cat * Cat = (Chain.create(), Chain.create())
stateful function f12(x : Cat * Cat) : Animal * Animal = g12(x)
stateful function g13() : map(Cat, Cat) = { [Chain.create()] = Chain.create() }
stateful function f13() : map(Animal, Animal) = g13()
stateful function g2(x : Cat) : Cat = Chain.create()
stateful function f2(x : Animal) : Animal = g2(x) // fail
stateful function g3(x : Cat) : Animal = f1(x)
stateful function f3(x : Cat) : Cat = g3(x) // fail
stateful function g4(x : (Cat => Animal)) : Cat = Chain.create()
stateful function f4(x : (Animal => Cat)) : Animal = g4(x)
stateful function g44(x : list(list(Cat) => list(Animal))) : Cat = Chain.create()
stateful function f44(x : list(list(Animal) => list(Cat))) : Animal = g44(x)
stateful function g5(x : (Animal => Animal)) : Cat = Chain.create()
stateful function f5(x : (Cat => Cat)) : Animal = g5(x) // fail
stateful function g6() : option(Cat) = Some(Chain.create())
stateful function f6() : option(Animal) = g6()
stateful function h6() : option(Cat) = f6() // fail
type cat_type = Cat
type animal_type = Animal
type cat_cat_map = map(cat_type, cat_type)
type animal_animal_map = map(animal_type, animal_type)
stateful function g71(x : animal_type) : cat_type = Chain.create()
stateful function f71(x : cat_type) : animal_type = g1(x)
stateful function g72() : cat_cat_map = { [Chain.create()] = Chain.create() }
stateful function f72() : animal_animal_map = g13()
stateful function g73() =
let some_cat : Cat = Chain.create()
let some_animal : Animal = some_cat
let some_cat_cat_map : map(Cat, Cat) = g13()
let some_animal_animal_map : map(Animal, Animal) = some_cat_cat_map
let x : Animal = some_animal_animal_map[some_cat] // success
let y : Cat = some_cat_cat_map[some_animal] // fail
()