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feat: construct uninitialized compile-time type arrays

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This commit is contained in:
Valdemar Høgsvig Lorenzen
2026-10-27 18:01:00 +01:00
parent e00a2abe27
commit ca53dab86b
12 changed files with 307 additions and 13 deletions
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tests/native.py
+188
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@@ -1317,6 +1317,194 @@ CASES = {
}
""", b"42\n", None,
),
"type_arrays_undefined_loop_initialization_generates_storage": (
"""
Storage proc() type {
types [2]mut type := undefined
if (types.len != 2) return bool
for (usize(0)..types.len) |index| { types[index] = i16 }
return struct { values [types.len]types[0], bias types[1] = 2 }
}
main proc() i16 {
value Storage() :: { values = [19, 21] }
same Storage() :: value
return same.values[0] + same.values[1] + same.bias
}
""", b"42\n", None,
),
"type_arrays_undefined_nested_updates_partial_copies_and_replacement": (
"""
Storage proc() type {
rows [2]mut [2]mut type := undefined
if (rows.len != 2 or rows[0].len != 2) return bool
(rows[0])[0] = i8
copied := rows
(rows[0])[1] = u8
rows[1] = [i8, bool]
(copied[0])[1] = i16
copied[1] = [bool, i16]
if (rows[0][0] != i8 or copied[0][0] != i8) return bool
if (rows[0][1] != u8 or rows[1][0] != i8 or rows[1][1] != bool) return bool
replacement [2]mut type := undefined
replacement = [i16, bool]
return struct { first copied[0][1], second copied[1][1], bias replacement[0] = 2 }
}
main proc() i16 {
value Storage() :: { first = 19, second = 21 }
return value.first + value.second + value.bias
}
""", b"42\n", None,
),
"type_arrays_undefined_empty_shapes_and_erased_generic_consumer": (
"""
empty_rows proc() [2]mut [0]mut type {
rows [2]mut [0]mut type := undefined
return rows
}
empty_outer proc() [0]mut [2]mut type {
rows [0]mut [2]mut type := undefined
return rows
}
row proc() [2]mut type {
types [2]mut type := undefined
rows :: empty_rows()
outer :: empty_outer()
if (rows.len != 2 or rows[0].len != 0 or rows[1].len != 0 or outer.len != 0) {
return [bool, bool]
}
for rows |empty| { for empty |_| { return [bool, bool] } }
types[0] = i16
types[1] = bool
return types
}
add proc($types [2]mut type, left types[0], right types[0]) types[0] {
enabled types[1] :: true
if (enabled) return left + right
return 0
}
forward proc(value i16) i16 { return add(row(), value, 2) }
main proc() i16 { return forward(40) }
""", b"42\n", None,
),
"type_arrays_undefined_reject_premature_leaf_read": (
"""
Bad proc() type {
types [2]mut type := undefined
types[0] = i16
return types[1]
}
main proc() Bad() { return 42 }
""", b"", b"local value was read before initialization",
),
"type_arrays_undefined_reject_partial_return": (
"""
rows proc() [2]mut [1]mut type {
types [2]mut [1]mut type := undefined
(types[0])[0] = i16
return types
}
main proc() rows()[0][0] { return 42 }
""", b"", b"local value was read before initialization",
),
"type_arrays_undefined_reject_partial_argument": (
"""
Selected proc(types [2]mut [1]mut type) type { return i16 }
Bad proc() type {
types [2]mut [1]mut type := undefined
(types[0])[0] = i16
return Selected(types)
}
main proc() Bad() { return 42 }
""", b"", b"local value was read before initialization",
),
"type_arrays_undefined_reject_partial_erased_argument": (
"""
Selected proc($types [2]mut type) type { return i16 }
Bad proc() type {
types [2]mut type := undefined
types[0] = i16
return Selected(types)
}
main proc() Bad() { return 42 }
""", b"", b"local value was read before initialization",
),
"type_arrays_undefined_copy_does_not_observe_later_initialization": (
"""
Bad proc() type {
types [2]mut type := undefined
types[0] = i16
copied :: types
types[1] = bool
return copied[1]
}
main proc() Bad() { return 42 }
""", b"", b"local value was read before initialization",
),
"type_arrays_undefined_reject_readonly_element_write": (
"""
Bad proc() type {
types [1]type := undefined
types[0] = i16
return types[0]
}
main proc() Bad() { return 42 }
""", b"", b"indexed assignment requires a writable array element",
),
"type_arrays_undefined_reject_inferred_length": (
"""
Bad proc() type {
types [_]mut type := undefined
return i16
}
main proc() Bad() { return 42 }
""", b"", b"array length must be a nonnegative supported compile-time integer",
),
"type_arrays_undefined_empty_outer_rejects_inferred_child_length": (
"""
Bad proc() type {
types [0]mut [_]mut type := undefined
return i16
}
main proc() Bad() { return 42 }
""", b"", b"array length must be a nonnegative supported compile-time integer",
),
"type_arrays_undefined_construction_is_bounded": (
"""
Bad proc() type {
types [1000000000]mut type := undefined
return i16
}
main proc() Bad() { return 42 }
""", b"", b"compile-time execution exceeds its recursion or step limit",
),
"type_arrays_undefined_nested_empty_construction_is_bounded": (
"""
Bad proc() type {
types [100]mut [100]mut [0]mut type := undefined
return i16
}
main proc() Bad() { return 42 }
""", b"", b"compile-time execution exceeds its recursion or step limit",
),
"type_arrays_undefined_does_not_enable_runtime_storage": (
"""
main proc() i16 {
values [1]mut i16 := undefined
values[0] = 42
return values[0]
}
""", b"", b"generic argument must be a compile-time value",
),
"type_arrays_undefined_does_not_enable_comptime_value_storage": (
"""
Bad proc() type {
values [1]mut usize := undefined
values[0] = 1
return i16
}
main proc() Bad() { return 42 }
""", b"", b"generic argument must be a compile-time value",
),
"type_arrays_only_execute_selected_bodies": (
"""
Selected proc(ok bool) type {