mago_codex/ttype/
combination.rs

1use std::collections::BTreeMap;
2
3use ahash::HashSet;
4use ordered_float::OrderedFloat;
5
6use mago_atom::Atom;
7use mago_atom::AtomMap;
8use mago_atom::AtomSet;
9
10use crate::ttype::atomic::TAtomic;
11use crate::ttype::atomic::array::TArray;
12use crate::ttype::atomic::array::key::ArrayKey;
13use crate::ttype::atomic::derived::TDerived;
14use crate::ttype::atomic::scalar::int::TInteger;
15use crate::ttype::union::TUnion;
16
17bitflags::bitflags! {
18    /// Compact bitflags for boolean state in TypeCombination.
19    /// This reduces struct size and enables single-cycle multi-flag checks.
20    #[derive(Debug, Clone, Copy, PartialEq, Eq, Default)]
21    pub struct CombinationFlags: u32 {
22        const HAS_OBJECT_TOP_TYPE           = 1 << 0;
23        const LIST_ARRAY_SOMETIMES_FILLED   = 1 << 1;
24        const LIST_ARRAY_ALWAYS_FILLED      = 1 << 2;
25        const KEYED_ARRAY_SOMETIMES_FILLED  = 1 << 3;
26        const KEYED_ARRAY_ALWAYS_FILLED     = 1 << 4;
27        const HAS_EMPTY_ARRAY               = 1 << 5;
28        const HAS_KEYED_ARRAY               = 1 << 6;
29        const GENERIC_MIXED                 = 1 << 7;
30        const HAS_MIXED                     = 1 << 8;
31        const RESOURCE                      = 1 << 9;
32        const OPEN_RESOURCE                 = 1 << 10;
33        const CLOSED_RESOURCE               = 1 << 11;
34
35        // Tristate encoding: 2 bits each (None=neither set, Some(false)=SET only, Some(true)=SET+VALUE)
36        const FALSY_MIXED_SET               = 1 << 12;
37        const FALSY_MIXED_VALUE             = 1 << 13;
38        const TRUTHY_MIXED_SET              = 1 << 14;
39        const TRUTHY_MIXED_VALUE            = 1 << 15;
40        const NONNULL_MIXED_SET             = 1 << 16;
41        const NONNULL_MIXED_VALUE           = 1 << 17;
42        const MIXED_FROM_LOOP_ISSET_SET     = 1 << 18;
43        const MIXED_FROM_LOOP_ISSET_VALUE   = 1 << 19;
44    }
45}
46
47impl CombinationFlags {
48    /// Get a tristate value (Option<bool>) from two bits.
49    #[inline]
50    pub fn get_tristate(self, set_bit: Self, value_bit: Self) -> Option<bool> {
51        if self.contains(set_bit) { Some(self.contains(value_bit)) } else { None }
52    }
53
54    /// Set a tristate value (Option<bool>) using two bits.
55    #[inline]
56    pub fn set_tristate(&mut self, set_bit: Self, value_bit: Self, value: Option<bool>) {
57        match value {
58            None => {
59                self.remove(set_bit);
60                self.remove(value_bit);
61            }
62            Some(false) => {
63                self.insert(set_bit);
64                self.remove(value_bit);
65            }
66            Some(true) => {
67                self.insert(set_bit);
68                self.insert(value_bit);
69            }
70        }
71    }
72
73    #[inline]
74    pub fn falsy_mixed(self) -> Option<bool> {
75        self.get_tristate(Self::FALSY_MIXED_SET, Self::FALSY_MIXED_VALUE)
76    }
77
78    #[inline]
79    pub fn set_falsy_mixed(&mut self, value: Option<bool>) {
80        self.set_tristate(Self::FALSY_MIXED_SET, Self::FALSY_MIXED_VALUE, value);
81    }
82
83    #[inline]
84    pub fn truthy_mixed(self) -> Option<bool> {
85        self.get_tristate(Self::TRUTHY_MIXED_SET, Self::TRUTHY_MIXED_VALUE)
86    }
87
88    #[inline]
89    pub fn set_truthy_mixed(&mut self, value: Option<bool>) {
90        self.set_tristate(Self::TRUTHY_MIXED_SET, Self::TRUTHY_MIXED_VALUE, value);
91    }
92
93    #[inline]
94    pub fn nonnull_mixed(self) -> Option<bool> {
95        self.get_tristate(Self::NONNULL_MIXED_SET, Self::NONNULL_MIXED_VALUE)
96    }
97
98    #[inline]
99    pub fn set_nonnull_mixed(&mut self, value: Option<bool>) {
100        self.set_tristate(Self::NONNULL_MIXED_SET, Self::NONNULL_MIXED_VALUE, value);
101    }
102
103    #[inline]
104    pub fn mixed_from_loop_isset(self) -> Option<bool> {
105        self.get_tristate(Self::MIXED_FROM_LOOP_ISSET_SET, Self::MIXED_FROM_LOOP_ISSET_VALUE)
106    }
107
108    #[inline]
109    pub fn set_mixed_from_loop_isset(&mut self, value: Option<bool>) {
110        self.set_tristate(Self::MIXED_FROM_LOOP_ISSET_SET, Self::MIXED_FROM_LOOP_ISSET_VALUE, value);
111    }
112}
113
114#[derive(Debug)]
115pub struct TypeCombination {
116    pub flags: CombinationFlags,
117    pub value_types: AtomMap<TAtomic>,
118    pub enum_names: HashSet<(Atom, Option<Atom>)>,
119    pub object_type_params: AtomMap<(Atom, Vec<TUnion>)>,
120    pub object_static: AtomMap<bool>,
121    pub list_array_counts: Option<HashSet<usize>>,
122    pub keyed_array_entries: BTreeMap<ArrayKey, (bool, TUnion)>,
123    pub list_array_entries: BTreeMap<usize, (bool, TUnion)>,
124    pub keyed_array_parameters: Option<(TUnion, TUnion)>,
125    pub list_array_parameter: Option<TUnion>,
126    pub sealed_arrays: Vec<TArray>,
127    pub integers: Vec<TInteger>,
128    pub literal_strings: AtomSet,
129    pub literal_floats: Vec<OrderedFloat<f64>>,
130    pub class_string_types: AtomMap<TAtomic>,
131    pub derived_types: HashSet<TDerived>,
132}
133
134impl Default for TypeCombination {
135    fn default() -> Self {
136        Self::new()
137    }
138}
139
140impl TypeCombination {
141    pub fn new() -> Self {
142        let flags = CombinationFlags::LIST_ARRAY_ALWAYS_FILLED | CombinationFlags::KEYED_ARRAY_ALWAYS_FILLED;
143
144        Self {
145            flags,
146            value_types: AtomMap::default(),
147            object_type_params: AtomMap::default(),
148            object_static: AtomMap::default(),
149            list_array_counts: Some(HashSet::default()),
150            keyed_array_entries: BTreeMap::new(),
151            list_array_entries: BTreeMap::new(),
152            keyed_array_parameters: None,
153            list_array_parameter: None,
154            sealed_arrays: Vec::new(),
155            literal_strings: AtomSet::default(),
156            integers: Vec::new(),
157            literal_floats: Vec::new(),
158            class_string_types: AtomMap::default(),
159            enum_names: HashSet::default(),
160            derived_types: HashSet::default(),
161        }
162    }
163
164    #[inline]
165    pub fn is_simple(&self) -> bool {
166        if self.value_types.len() == 1
167            && self.sealed_arrays.is_empty()
168            && !self.flags.contains(CombinationFlags::HAS_KEYED_ARRAY)
169            && !self.flags.contains(CombinationFlags::HAS_EMPTY_ARRAY)
170            && !self.flags.intersects(
171                CombinationFlags::RESOURCE | CombinationFlags::OPEN_RESOURCE | CombinationFlags::CLOSED_RESOURCE,
172            )
173            && self.keyed_array_parameters.is_none()
174            && self.list_array_parameter.is_none()
175        {
176            return self.object_type_params.is_empty()
177                && self.enum_names.is_empty()
178                && self.literal_strings.is_empty()
179                && self.class_string_types.is_empty()
180                && self.integers.is_empty()
181                && self.derived_types.is_empty();
182        }
183
184        false
185    }
186}
mago_codex/ttype/combination.rs

mago_codex/ttype/
combination.rs
