cairo-lang-semantic 2.18.0

Cairo semantic model.
Documentation 
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//! > Test struct generics.

//! > test_runner_name
test_function_diagnostics(expect_diagnostics: false)

//! > function_code
fn foo(a: A<felt252>) -> felt252 {
    a.a
}

//! > function_name
foo

//! > module_code
struct A<T> {
    a: T,
}

//! > expected_diagnostics

//! > ==========================================================================

//! > Test invalid recursive struct.

//! > test_runner_name
test_function_diagnostics(expect_diagnostics: true)

//! > function_code
fn foo() {}

//! > function_name
foo

//! > module_code
struct A {
    member: A,
}

struct B {
    member: C,
    member2: A,
}

struct C {
    member: B,
}

//! > expected_diagnostics
error[E2052]: Recursive type "test::A" has infinite size.
 --> lib.cairo:2:5
    member: A,
    ^^^^^^^^^

error[E2052]: Recursive type "test::C" has infinite size.
 --> lib.cairo:6:5
    member: C,
    ^^^^^^^^^

error[E2052]: Recursive type "test::A" has infinite size.
 --> lib.cairo:7:5
    member2: A,
    ^^^^^^^^^^

error[E2052]: Recursive type "test::B" has infinite size.
 --> lib.cairo:11:5
    member: B,
    ^^^^^^^^^

//! > ==========================================================================

//! > Test phantom recursive struct.

//! > test_runner_name
test_function_diagnostics(expect_diagnostics: false)

//! > function_code
fn foo() {}

//! > function_name
foo

//! > module_code
#[phantom]
struct A {
    member: A,
}

//! > expected_diagnostics

//! > ==========================================================================

//! > Test struct containing phantom.

//! > test_runner_name
test_function_diagnostics(expect_diagnostics: true)

//! > function_code
fn foo() {}

//! > function_name
foo

//! > module_code
#[phantom]
struct A {}

struct B {
    member: A,
}

//! > expected_diagnostics
error[E2020]: Non-phantom type containing phantom type.
 --> lib.cairo:5:5
    member: A,
    ^^^^^^^^^

//! > ==========================================================================

//! > Test struct containing empty array.

//! > test_runner_name
test_function_diagnostics(expect_diagnostics: true)

//! > function_code
fn foo() {}

//! > function_name
foo

//! > module_code
struct A {
    member: Array<((), ())>,
}

//! > expected_diagnostics
error[E2053]: Cannot have array of type "((), ())" that is zero sized.
 --> lib.cairo:2:5
    member: Array<((), ())>,
    ^^^^^^^^^^^^^^^^^^^^^^^