drizzle_core/traits/
tuple.rs

1// =============================================================================
2// Recursive accumulator macros
3// =============================================================================
4//
5// These macros generate all tuple arities from a flat list of elements.
6// Each element is listed once; the macro automatically generates all
7// prefix arities (1-element, 2-element, ..., N-element tuples).
8
9/// Recursive accumulator for type-only callbacks.
10macro_rules! seq_types {
11    (@acc $callback:ident [$($acc:ident),*]) => {};
12    (@acc $callback:ident [$($acc:ident),*] $next:ident $($rest:ident)*) => {
13        $callback!($($acc,)* $next);
14        seq_types!(@acc $callback [$($acc,)* $next] $($rest)*);
15    };
16}
17
18/// Recursive accumulator for dual-type callbacks.
19macro_rules! seq_dual {
20    (@acc $callback:ident [$($sa:ident),*] [$($da:ident),*]) => {};
21    (@acc $callback:ident [$($sa:ident),*] [$($da:ident),*] ($s:ident, $d:ident) $($rest:tt)*) => {
22        $callback!($($sa,)* $s; $($da,)* $d);
23        seq_dual!(@acc $callback [$($sa,)* $s] [$($da,)* $d] $($rest)*);
24    };
25}
26
27/// Recursive accumulator for type+index callbacks.
28macro_rules! seq_tuples {
29    (@acc $callback:ident [$($aT:ident),*] [$($ai:tt),*]) => {};
30    (@acc $callback:ident [$($aT:ident),*] [$($ai:tt),*] ($T:ident, $i:tt) $($rest:tt)*) => {
31        $callback!($($aT,)* $T; $($ai,)* $i);
32        seq_tuples!(@acc $callback [$($aT,)* $T] [$($ai,)* $i] $($rest)*);
33    };
34    ($callback:ident; $($pairs:tt)+) => {
35        seq_tuples!(@acc $callback [] [] $($pairs)+);
36    };
37    (@from $callback:ident [$($aT:ident),*] [$($ai:tt),*]; $($pairs:tt)+) => {
38        seq_tuples!(@acc $callback [$($aT),*] [$($ai),*] $($pairs)+);
39    };
40}
41
42// =============================================================================
43// Constraint tuple macros (used by constraint.rs)
44// =============================================================================
45
46/// Calls `$callback!(T0)`, ..., `$callback!(T0, ..., T15)` for arities 1..16.
47macro_rules! with_tuple_sizes {
48    ($callback:ident) => {
49        seq_types!(@acc $callback [] T0 T1 T2 T3 T4 T5 T6 T7 T8 T9 T10 T11 T12 T13 T14 T15);
50    };
51}
52
53/// Calls `$callback!(S0; D0)`, ..., `$callback!(S0..S15; D0..D15)` for arities 1..16.
54macro_rules! with_dual_tuple_sizes {
55    ($callback:ident) => {
56        seq_dual!(@acc $callback [] [] (S0,D0) (S1,D1) (S2,D2) (S3,D3) (S4,D4) (S5,D5) (S6,D6) (S7,D7) (S8,D8) (S9,D9) (S10,D10) (S11,D11) (S12,D12) (S13,D13) (S14,D14) (S15,D15));
57    };
58}
59
60// =============================================================================
61// Type-only size macros (no indices, for callbacks that take only type names)
62// =============================================================================
63
64/// Calls `$callback!(T0)`, ..., `$callback!(T0, ..., T7)` for arities 1..8.
65macro_rules! with_type_sizes_8 {
66    ($callback:ident) => {
67        seq_types!(@acc $callback [] T0 T1 T2 T3 T4 T5 T6 T7);
68    };
69}
70
71/// Calls `$callback!` for arities 9..=16 (continuing from 8).
72#[allow(unused_macros)]
73macro_rules! with_type_sizes_16 {
74    ($callback:ident) => {
75        seq_types!(@acc $callback [T0,T1,T2,T3,T4,T5,T6,T7] T8 T9 T10 T11 T12 T13 T14 T15);
76    };
77}
78
79/// Calls `$callback!` for arities 17..=32 (continuing from 16).
80#[allow(unused_macros)]
81macro_rules! with_type_sizes_32 {
82    ($callback:ident) => {
83        seq_types!(@acc $callback [T0,T1,T2,T3,T4,T5,T6,T7,T8,T9,T10,T11,T12,T13,T14,T15] T16 T17 T18 T19 T20 T21 T22 T23 T24 T25 T26 T27 T28 T29 T30 T31);
84    };
85}
86
87// =============================================================================
88// ToSQL tuple impls
89// =============================================================================
90
91use crate::{SQL, SQLParam, ToSQL, Token};
92
93/// Callback: implements `ToSQL` for a tuple of the given arity.
94macro_rules! impl_tosql_tuple {
95    ($($T:ident),+; $($idx:tt),+) => {
96        impl<'a, V: SQLParam, $($T: ToSQL<'a, V>),+> ToSQL<'a, V> for ($($T,)+) {
97            fn to_sql(&self) -> SQL<'a, V> {
98                SQL::join([$(self.$idx.to_sql(),)+], Token::COMMA)
99            }
100        }
101    };
102}
103
104/// Calls `$callback!` for arities 1..=8.
105macro_rules! with_col_sizes_8 {
106    ($callback:ident) => {
107        seq_tuples!($callback;
108            (T0,0) (T1,1) (T2,2) (T3,3)
109            (T4,4) (T5,5) (T6,6) (T7,7)
110        );
111    };
112}
113
114/// Calls `$callback!` for arities 9..=16.
115#[allow(unused_macros)]
116macro_rules! with_col_sizes_16 {
117    ($callback:ident) => {
118        seq_tuples!(@from $callback
119            [T0,T1,T2,T3,T4,T5,T6,T7]
120            [0,1,2,3,4,5,6,7];
121            (T8,8) (T9,9) (T10,10) (T11,11)
122            (T12,12) (T13,13) (T14,14) (T15,15)
123        );
124    };
125}
126
127/// Calls `$callback!` for arities 17..=32.
128#[allow(unused_macros)]
129macro_rules! with_col_sizes_32 {
130    ($callback:ident) => {
131        seq_tuples!(@from $callback
132            [T0,T1,T2,T3,T4,T5,T6,T7,T8,T9,T10,T11,T12,T13,T14,T15]
133            [0,1,2,3,4,5,6,7,8,9,10,11,12,13,14,15];
134            (T16,16) (T17,17) (T18,18) (T19,19)
135            (T20,20) (T21,21) (T22,22) (T23,23)
136            (T24,24) (T25,25) (T26,26) (T27,27)
137            (T28,28) (T29,29) (T30,30) (T31,31)
138        );
139    };
140}
141
142/// Calls `$callback!` for arities 33..=64.
143#[allow(unused_macros)]
144macro_rules! with_col_sizes_64 {
145    ($callback:ident) => {
146        seq_tuples!(@from $callback
147            [T0,T1,T2,T3,T4,T5,T6,T7,T8,T9,T10,T11,T12,T13,T14,T15,
148             T16,T17,T18,T19,T20,T21,T22,T23,T24,T25,T26,T27,T28,T29,T30,T31]
149            [0,1,2,3,4,5,6,7,8,9,10,11,12,13,14,15,
150             16,17,18,19,20,21,22,23,24,25,26,27,28,29,30,31];
151            (T32,32) (T33,33) (T34,34) (T35,35)
152            (T36,36) (T37,37) (T38,38) (T39,39)
153            (T40,40) (T41,41) (T42,42) (T43,43)
154            (T44,44) (T45,45) (T46,46) (T47,47)
155            (T48,48) (T49,49) (T50,50) (T51,51)
156            (T52,52) (T53,53) (T54,54) (T55,55)
157            (T56,56) (T57,57) (T58,58) (T59,59)
158            (T60,60) (T61,61) (T62,62) (T63,63)
159        );
160    };
161}
162
163/// Calls `$callback!` for arities 65..=128.
164#[allow(unused_macros)]
165macro_rules! with_col_sizes_128 {
166    ($callback:ident) => {
167        seq_tuples!(@from $callback
168            [T0,T1,T2,T3,T4,T5,T6,T7,T8,T9,T10,T11,T12,T13,T14,T15,
169             T16,T17,T18,T19,T20,T21,T22,T23,T24,T25,T26,T27,T28,T29,T30,T31,
170             T32,T33,T34,T35,T36,T37,T38,T39,T40,T41,T42,T43,T44,T45,T46,T47,
171             T48,T49,T50,T51,T52,T53,T54,T55,T56,T57,T58,T59,T60,T61,T62,T63]
172            [0,1,2,3,4,5,6,7,8,9,10,11,12,13,14,15,
173             16,17,18,19,20,21,22,23,24,25,26,27,28,29,30,31,
174             32,33,34,35,36,37,38,39,40,41,42,43,44,45,46,47,
175             48,49,50,51,52,53,54,55,56,57,58,59,60,61,62,63];
176            (T64,64) (T65,65) (T66,66) (T67,67)
177            (T68,68) (T69,69) (T70,70) (T71,71)
178            (T72,72) (T73,73) (T74,74) (T75,75)
179            (T76,76) (T77,77) (T78,78) (T79,79)
180            (T80,80) (T81,81) (T82,82) (T83,83)
181            (T84,84) (T85,85) (T86,86) (T87,87)
182            (T88,88) (T89,89) (T90,90) (T91,91)
183            (T92,92) (T93,93) (T94,94) (T95,95)
184            (T96,96) (T97,97) (T98,98) (T99,99)
185            (T100,100) (T101,101) (T102,102) (T103,103)
186            (T104,104) (T105,105) (T106,106) (T107,107)
187            (T108,108) (T109,109) (T110,110) (T111,111)
188            (T112,112) (T113,113) (T114,114) (T115,115)
189            (T116,116) (T117,117) (T118,118) (T119,119)
190            (T120,120) (T121,121) (T122,122) (T123,123)
191            (T124,124) (T125,125) (T126,126) (T127,127)
192        );
193    };
194}
195
196/// Calls `$callback!` for arities 129..=200.
197#[allow(unused_macros)]
198macro_rules! with_col_sizes_200 {
199    ($callback:ident) => {
200        seq_tuples!(@from $callback
201            [T0,T1,T2,T3,T4,T5,T6,T7,T8,T9,T10,T11,T12,T13,T14,T15,
202             T16,T17,T18,T19,T20,T21,T22,T23,T24,T25,T26,T27,T28,T29,T30,T31,
203             T32,T33,T34,T35,T36,T37,T38,T39,T40,T41,T42,T43,T44,T45,T46,T47,
204             T48,T49,T50,T51,T52,T53,T54,T55,T56,T57,T58,T59,T60,T61,T62,T63,
205             T64,T65,T66,T67,T68,T69,T70,T71,T72,T73,T74,T75,T76,T77,T78,T79,
206             T80,T81,T82,T83,T84,T85,T86,T87,T88,T89,T90,T91,T92,T93,T94,T95,
207             T96,T97,T98,T99,T100,T101,T102,T103,T104,T105,T106,T107,T108,T109,T110,T111,
208             T112,T113,T114,T115,T116,T117,T118,T119,T120,T121,T122,T123,T124,T125,T126,T127]
209            [0,1,2,3,4,5,6,7,8,9,10,11,12,13,14,15,
210             16,17,18,19,20,21,22,23,24,25,26,27,28,29,30,31,
211             32,33,34,35,36,37,38,39,40,41,42,43,44,45,46,47,
212             48,49,50,51,52,53,54,55,56,57,58,59,60,61,62,63,
213             64,65,66,67,68,69,70,71,72,73,74,75,76,77,78,79,
214             80,81,82,83,84,85,86,87,88,89,90,91,92,93,94,95,
215             96,97,98,99,100,101,102,103,104,105,106,107,108,109,110,111,
216             112,113,114,115,116,117,118,119,120,121,122,123,124,125,126,127];
217            (T128,128) (T129,129) (T130,130) (T131,131)
218            (T132,132) (T133,133) (T134,134) (T135,135)
219            (T136,136) (T137,137) (T138,138) (T139,139)
220            (T140,140) (T141,141) (T142,142) (T143,143)
221            (T144,144) (T145,145) (T146,146) (T147,147)
222            (T148,148) (T149,149) (T150,150) (T151,151)
223            (T152,152) (T153,153) (T154,154) (T155,155)
224            (T156,156) (T157,157) (T158,158) (T159,159)
225            (T160,160) (T161,161) (T162,162) (T163,163)
226            (T164,164) (T165,165) (T166,166) (T167,167)
227            (T168,168) (T169,169) (T170,170) (T171,171)
228            (T172,172) (T173,173) (T174,174) (T175,175)
229            (T176,176) (T177,177) (T178,178) (T179,179)
230            (T180,180) (T181,181) (T182,182) (T183,183)
231            (T184,184) (T185,185) (T186,186) (T187,187)
232            (T188,188) (T189,189) (T190,190) (T191,191)
233            (T192,192) (T193,193) (T194,194) (T195,195)
234            (T196,196) (T197,197) (T198,198) (T199,199)
235        );
236    };
237}
238
239// =============================================================================
240// Feature-gated invocations
241// =============================================================================
242
243with_col_sizes_8!(impl_tosql_tuple);
244
245#[cfg(any(
246    feature = "col16",
247    feature = "col32",
248    feature = "col64",
249    feature = "col128",
250    feature = "col200"
251))]
252with_col_sizes_16!(impl_tosql_tuple);
253
254#[cfg(any(
255    feature = "col32",
256    feature = "col64",
257    feature = "col128",
258    feature = "col200"
259))]
260with_col_sizes_32!(impl_tosql_tuple);
261
262#[cfg(any(feature = "col64", feature = "col128", feature = "col200"))]
263with_col_sizes_64!(impl_tosql_tuple);
264
265#[cfg(any(feature = "col128", feature = "col200"))]
266with_col_sizes_128!(impl_tosql_tuple);
267
268#[cfg(feature = "col200")]
269with_col_sizes_200!(impl_tosql_tuple);
drizzle_core/traits/tuple.rs

drizzle_core/traits/
tuple.rs
