luaur-analysis 0.1.1

Luau type checker and type inference (Rust).
Documentation 
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105

//! Node: `cxx:Method:Luau.Analysis:Analysis/include/Luau/Instantiation.h:21:ReplaceGenerics`
//! Source: `Analysis/include/Luau/Instantiation.h` (Instantiation.h:21-37, hand-ported)
use crate::records::builtin_types::BuiltinTypes;
use crate::records::replace_generics::ReplaceGenerics;
use crate::records::scope::Scope;
use crate::records::substitution::Substitution;
use crate::records::tarjan::SubstitutionVtable;
use crate::records::txn_log::TxnLog;
use crate::records::type_arena::TypeArena;
use crate::records::type_level::TypeLevel;
use crate::type_aliases::type_id::TypeId;
use crate::type_aliases::type_pack_id::TypePackId;
use alloc::vec::Vec;
use core::ffi::c_void;

fn replace_generics_is_dirty_ty(owner: *mut c_void, ty: TypeId) -> bool {
    unsafe { (*(owner as *mut ReplaceGenerics)).is_dirty_type_id(ty) }
}

fn replace_generics_is_dirty_tp(owner: *mut c_void, tp: TypePackId) -> bool {
    unsafe { (*(owner as *mut ReplaceGenerics)).is_dirty_type_pack_id(tp) }
}

fn replace_generics_clean_ty(owner: *mut c_void, ty: TypeId) -> TypeId {
    unsafe { (*(owner as *mut ReplaceGenerics)).clean_type_id(ty) }
}

fn replace_generics_clean_tp(owner: *mut c_void, tp: TypePackId) -> TypePackId {
    unsafe { (*(owner as *mut ReplaceGenerics)).clean_type_pack_id(tp) }
}

fn replace_generics_found_dirty_ty(owner: *mut c_void, ty: TypeId) {
    unsafe {
        (*(owner as *mut ReplaceGenerics))
            .base
            .found_dirty_type_id(ty)
    }
}

fn replace_generics_found_dirty_tp(owner: *mut c_void, tp: TypePackId) {
    unsafe {
        (*(owner as *mut ReplaceGenerics))
            .base
            .found_dirty_type_pack_id(tp)
    }
}

fn replace_generics_ignore_children_ty(owner: *mut c_void, ty: TypeId) -> bool {
    unsafe { (*(owner as *mut ReplaceGenerics)).ignore_children(ty) }
}

fn replace_generics_ignore_children_tp(_owner: *mut c_void, _tp: TypePackId) -> bool {
    false
}

impl ReplaceGenerics {
    /// C++ `ReplaceGenerics(const TxnLog* log, TypeArena* arena, NotNull<BuiltinTypes> builtinTypes,
    /// TypeLevel level, Scope* scope, const std::vector<TypeId>& generics,
    /// const std::vector<TypePackId>& genericPacks) : Substitution(log, arena), ...`.
    pub fn replace_generics_new(
        log: *const TxnLog,
        arena: *mut TypeArena,
        builtin_types: *mut BuiltinTypes,
        level: TypeLevel,
        scope: *mut Scope,
        generics: Vec<TypeId>,
        generic_packs: Vec<TypePackId>,
    ) -> Self {
        ReplaceGenerics {
            base: Substitution::substitution_new(log, arena),
            builtin_types,
            level,
            scope,
            generics,
            generic_packs,
        }
    }

    fn install_substitution_vtable(&mut self) {
        let owner = self as *mut ReplaceGenerics as *mut c_void;
        self.base.base.vtable = SubstitutionVtable {
            owner,
            is_dirty_ty: Some(replace_generics_is_dirty_ty),
            is_dirty_tp: Some(replace_generics_is_dirty_tp),
            clean_ty: Some(replace_generics_clean_ty),
            clean_tp: Some(replace_generics_clean_tp),
            found_dirty_ty: Some(replace_generics_found_dirty_ty),
            found_dirty_tp: Some(replace_generics_found_dirty_tp),
            ignore_children_ty: Some(replace_generics_ignore_children_ty),
            ignore_children_tp: Some(replace_generics_ignore_children_tp),
            ignore_children_visit_ty: Some(replace_generics_ignore_children_ty),
            ignore_children_visit_tp: Some(replace_generics_ignore_children_tp),
        };
    }

    pub fn substitute_type_id(&mut self, ty: TypeId) -> Option<TypeId> {
        self.install_substitution_vtable();
        self.base.substitute_type_id(ty)
    }

    pub fn substitute_type_pack_id(&mut self, tp: TypePackId) -> Option<TypePackId> {
        self.install_substitution_vtable();
        self.base.substitute_type_pack_id(tp)
    }
}