feat: allow using the throwaway ('_') var

[daniel-makerx]

No description provided.

[github-actions]

Coverage Report

File	Stmts	Miss	Cover	Missing
src/puya
__main__.py	31	1	97%	116
arc4_util.py	104	8	92%	30, 78–79, 93, 105, 107, 143, 162
arc32.py	125	3	98%	109, 120, 223
client_gen.py	107	107	0%	1–195
compile.py	183	7	96%	143, 157–160, 177–178, 249–250
errors.py	122	29	76%	47–48, 52, 54–57, 82, 124, 144–145, 150–164, 175–178
logging_config.py	129	28	78%	15, 36–39, 45, 47, 50–54, 69, 88, 141–143, 146–148, 150, 163–172, 194
models.py	101	3	97%	10–13
options.py	30	2	93%	12–13
parse.py	203	17	92%	85, 97, 126, 168, 222, 265, 275, 277, 281, 309–314, 318, 348, 362, 374–375
utils.py	164	23	86%	51, 55, 89, 95, 110, 113–115, 122, 144, 157–158, 162, 166–169, 198, 200, 223, 235, 240, 245, 256
src/puya/awst
function_traverser.py	190	3	98%	116, 146–147
nodes.py	927	69	93%	18–27, 43, 52, 86, 92, 96–99, 133, 139, 143–146, 280, 524, 727–728, 748, 760, 798, 804–805, 835, 861, 865–869, 881, 937, 979–980, 985, 1000, 1051, 1056, 1114, 1139, 1156, 1304, 1352, 1357–1358, 1365–1370, 1412, 1495, 1543, 1552, 1580, 1587, 1600, 1642, 1684, 1695, 1697, 1702, 1710, 1715, 1720, 1729, 1734, 1739, 1746
to_code_visitor.py	325	13	96%	83–84, 87–90, 114–115, 196, 331–332, 426–427, 498, 526
visitors.py	223	73	67%	7, 15, 19, 23, 27, 31, 35, 39, 43, 47, 53, 59, 65, 69, 73, 77, 83, 87, 91, 95, 99, 103, 109, 113, 117, 121, 125, 129, 133, 137, 141, 147, 151, 155, 161, 167, 171, 177, 181, 185, 189, 193, 197, 201, 205, 209, 213, 217, 221, 225, 229, 233, 239, 242, 245, 251, 257, 261, 265, 269, 273, 277, 281, 285, 289, 293, 297, 301, 305, 309, 313, 317, 321
wtypes.py	306	34	89%	21, 190–201, 216–219, 236, 238, 283, 286, 311, 314, 316, 319, 344, 363, 399, 402, 451–452, 461–462, 470–471, 482, 485, 544, 556, 572
src/puya/awst_build
arc4_utils.py	151	36	76%	50, 52, 55, 67, 94–95, 110, 114, 117, 123, 126, 129, 132, 140, 148, 151, 154–166, 169, 178, 181, 264, 336, 343, 346
base_mypy_visitor.py	133	44	67%	39, 59, 71–77, 95, 106–121, 135, 139, 143, 154, 158, 166, 172, 178, 196, 202, 207, 210, 213, 222, 226, 231, 236, 242, 247, 253, 260, 264, 268, 272, 276, 280, 284, 288, 292, 296, 300, 304, 308
context.py	147	22	85%	59–60, 136–141, 149, 151–155, 158–159, 179, 184, 188, 201, 213–214
contract.py	223	59	74%	130–131, 133–136, 144–145, 148, 160, 171, 193, 211, 217, 219, 228, 238, 247, 275, 279, 295–299, 307–308, 313, 316, 319, 322, 327–328, 331, 339, 342, 345, 348, 351, 354, 357, 360, 363, 366, 380, 394–401, 410–417, 424–425, 448, 458–459, 466, 472, 494–500
intrinsic_factory.py	31	2	94%	10, 83
intrinsic_models.py	32	5	84%	21, 26–29
main.py	48	3	94%	32, 49, 59
module.py	402	80	80%	75, 143, 157–159, 177–178, 185, 193, 199, 205–209, 214, 226, 250–251, 262, 292, 318–319, 342, 349, 371–372, 395–400, 454–455, 466, 483, 494, 497, 503, 511, 514, 521, 527, 539, 542, 564, 585, 591, 600–601, 619–654, 678, 686–687, 701–703, 705, 707–708, 733, 741, 743
subroutine.py	628	75	88%	219, 230, 290, 296, 364, 368, 382, 390, 424–425, 565–580, 588, 596, 599, 611, 643–644, 649, 654, 691, 711–712, 735–741, 794–795, 800, 816, 819, 822, 830–836, 890, 894–895, 899–900, 916, 918, 921–923, 948–949, 957, 992–1000, 1035, 1063, 1067, 1098, 1174, 1202, 1209, 1219, 1230–1234, 1243, 1246, 1249, 1252, 1255, 1260, 1265, 1272, 1279
utils.py	165	17	90%	41, 78, 93, 96–97, 101, 143, 146–147, 166, 180, 193, 200, 238, 259, 312–313
src/puya/awst_build/eb
_utils.py	21	2	90%	14–15
app_account_state.py	128	28	78%	51–54, 62, 78, 80, 112–113, 134–141, 162–163, 168, 175–176, 178, 195–196, 203–204, 233, 238–239
app_state.py	123	26	79%	35–40, 51–58, 79–80, 85, 95–96, 101, 118–119, 126–127, 168–169, 192, 210
array.py	68	45	34%	26–27, 30–32, 37–44, 56–72, 77–79, 82, 85–88, 93–95, 100–102, 111–123
base.py	208	61	71%	25–32, 104, 108, 112, 118, 122, 128–133, 144–150, 155–161, 167, 173, 183, 193, 197, 201, 211, 214, 217, 220, 223, 226, 231, 234, 256, 277, 280, 285, 288, 291, 294, 297, 302, 305, 316, 329, 339, 342, 355, 376, 381, 390, 393, 397, 404, 407, 410, 415, 420, 425, 431
biguint.py	90	22	76%	34–38, 62–63, 77, 92, 102–105, 127–130, 147–152, 169–177, 180–181
bool.py	40	8	80%	27–31, 49–50, 53–54, 72
bytes.py	141	19	87%	55–59, 81–82, 93–94, 114–115, 119, 123, 128, 130–131, 151, 173, 287–288, 317
bytes_backed.py	29	4	86%	37–38, 47–48
contracts.py	44	2	95%	57, 61
ensure_budget.py	48	15	69%	25–29, 49–50, 70–71, 79, 91, 97–102
intrinsics.py	156	43	72%	32–34, 55–56, 64–65, 71–72, 89–90, 97, 126, 135, 137–161, 168–169, 213, 221, 233–234, 236, 253–254, 266, 271, 278, 281
log.py	52	9	83%	25–29, 79–85, 95, 97
named_int_constants.py	20	2	90%	23–24
string.py	119	15	87%	42–46, 67–68, 86–87, 100–101, 128–129, 181, 239–240, 255
struct.py	32	15	53%	21–22, 25, 35–41, 46–48, 51–56
subroutine.py	51	5	90%	48, 63, 89, 92, 107
template_variables.py	47	10	79%	25–26, 59–60, 64, 69, 72–73, 82–83
throwaway.py	46	13	72%	21–25, 35, 38, 47, 50, 53, 59, 62, 65, 70
tuple.py	98	20	80%	39–40, 47, 58, 60–61, 83–84, 93–94, 107, 113, 131–132, 137–138, 150, 158, 166, 198
type_registry.py	31	4	87%	152–153, 164–165
uint64.py	79	15	81%	37–41, 62–63, 84, 102, 125, 144–147, 161–169, 172–173
unsigned_builtins.py	70	11	84%	30–34, 51, 58, 92, 95–96, 126, 129–130
value_proxy.py	39	12	69%	24, 27, 30, 33, 36, 41, 56, 66, 75, 84, 87, 90
src/puya/awst_build/eb/arc4
utils.py	160	21	87%	25–28, 60–61, 63, 66–67, 89–90, 120, 125–126, 165, 200, 206, 211–213, 257, 262
abi_call.py	167	23	86%	51–54, 109, 118–119, 137–138, 142–143, 182, 194, 212–213, 275–281, 310–311, 372, 375, 377
arrays.py	225	29	87%	63–67, 80–81, 108, 138, 158–159, 194, 196, 229, 256, 272–273, 286, 329–330, 383–384, 406, 416–417, 433, 462, 481–482, 490, 536
base.py	104	23	78%	36–40, 68–69, 74–75, 84–92, 147–148, 168, 177–178, 195–196, 206, 216, 221
bool.py	31	6	81%	19–26, 47–48
dynamic_bytes.py	42	5	88%	15–19, 60–61
emit.py	33	7	79%	26–30, 55–56, 64–65
numeric.py	114	17	85%	30–34, 46, 60, 74, 81–82, 105, 132–133, 139, 145, 198–201
string.py	66	12	82%	33–37, 54, 57, 86, 105–106, 131–132, 150–151
struct.py	58	8	86%	26–33, 68, 71, 106–107
tuple.py	83	17	80%	29–33, 48, 52–53, 82, 91, 102, 111, 124, 128–129, 156–157, 166–167
src/puya/awst_build/eb/reference_types
account.py	62	10	84%	30–34, 51, 60–64, 105
application.py	32	7	78%	15–19, 35–36, 40–41
asset.py	52	9	83%	26–30, 46–47, 51–52, 88–89
base.py	44	4	91%	25–27, 61, 87
src/puya/awst_build/eb/transaction
base.py	35	8	77%	17–18, 26, 30, 35–36, 43, 52
group.py	57	15	74%	33–37, 87–88, 141–154
inner.py	56	8	86%	27–32, 64–65, 115, 142
inner_params.py	104	11	89%	31–35, 43–44, 54, 110, 145, 169, 185, 217
src/puya/awst_build/validation
arc4_copy.py	43	1	98%	38
base_invoker.py	31	5	84%	33, 40, 49–54
inner_transactions.py	94	2	98%	111, 125
scratch_slots.py	38	4	89%	17, 31, 47, 49
src/puya/ir
arc4_router.py	246	20	92%	131, 149, 157, 307, 381, 427, 491–492, 506, 546–547, 559, 564, 569, 574, 579, 584, 604–609
avm_ops.py	316	2	99%	46–47
avm_ops_models.py	48	3	94%	21, 30, 38
context.py	91	12	87%	18, 71–72, 74, 92–98, 103, 114, 121, 131
main.py	222	6	97%	139, 142, 308, 310, 415, 426
models.py	470	26	94%	29, 45, 63, 79, 186, 196, 200, 374, 448, 490, 570, 586, 627, 630, 637, 640, 696, 705, 713, 719, 730–732, 742, 754, 791
ssa.py	136	9	93%	43, 51–52, 99, 105, 141, 145, 166, 170
to_text_visitor.py	143	9	94%	86, 91, 175–176, 182–187
types.py	50	7	86%	27–28, 58–61, 72
visitor.py	171	37	78%	10–12, 20, 24, 28, 32, 36, 40, 44, 48, 52, 56, 60, 64, 68, 72, 76, 80, 84, 88, 92, 96, 174, 186, 201, 204, 207, 213, 216, 222, 225, 228, 231, 234, 237, 240, 243
visitor_mutator.py	93	2	98%	138–139
vla.py	73	2	97%	50, 87
src/puya/ir/builder
_utils.py	71	8	89%	33, 44, 57, 79–80, 157, 203–204
arc4.py	422	48	89%	76–77, 126, 150–156, 220, 228, 451, 463, 466, 622–636, 965–979, 1005–1029, 1038–1054, 1077, 1184–1185, 1230–1247, 1286–1287, 1340, 1373–1374, 1522–1523, 1586
assignment.py	43	5	88%	59, 75, 102, 133–134
blocks.py	93	10	89%	62, 72, 76, 112, 120, 124, 157–159, 165–167
callsub.py	57	1	98%	93
flow_control.py	98	4	96%	63, 117, 141, 155
iteration.py	190	5	97%	46, 66, 95, 176–177
itxn.py	269	26	90%	123–124, 139–140, 150–151, 157–162, 188, 468–469, 474–475, 480–481, 487, 498, 515–516, 558–561
main.py	476	51	89%	94, 119, 145, 154, 158, 203–204, 220–221, 255, 263, 270–271, 342, 380, 392, 409, 430, 437, 471, 484, 522, 535–536, 600–601, 623, 671, 699, 717, 752–753, 828, 831, 837, 844–845, 875–876, 891, 937–938, 954–955, 989, 1004–1006, 1015, 1018–1019
src/puya/ir/destructure
coalesce_locals.py	94	15	84%	33, 36, 118, 127–128, 131–134, 137–139, 155–158
parcopy.py	84	2	98%	47, 83
src/puya/ir/optimize
_utils.py	28	1	96%	21
collapse_blocks.py	92	5	95%	65–69
control_op_simplification.py	101	11	89%	158–165, 239–246
dead_code_elimination.py	118	2	98%	289, 325
intrinsic_simplification.py	370	39	89%	64, 128, 140, 202, 271, 329, 335, 386, 408, 429, 431, 437, 481, 483, 485, 492, 522, 528, 530, 532, 537, 539, 541, 543, 545, 548–551, 558, 560, 562, 564, 566, 568, 572, 595–596, 603
main.py	85	3	96%	106–107, 123
src/puya/ir/validation
min_avm_version_validator.py	29	3	90%	25–26, 39
op_run_mode_validator.py	41	8	80%	23–24, 45–56
src/puya/mir
annotaters.py	172	7	96%	56, 62, 98, 102, 135, 139, 216
builder.py	120	5	96%	90, 138, 144, 251–252
context.py	39	1	97%	35
models.py	335	24	93%	14–18, 30, 41, 53, 69–70, 78, 89, 100, 111, 141, 251, 282, 319, 331, 348, 356–362, 368
output.py	61	2	97%	29, 31
stack.py	253	22	91%	68, 72, 115, 119, 125, 135, 146, 157, 167, 182, 199, 209, 228, 246, 252, 254, 293, 304, 328, 360, 365, 403
visitor.py	76	24	68%	7, 15, 19, 23, 27, 31, 35, 39, 43, 47, 51, 55, 59, 63, 67, 71, 75, 79, 83, 87, 91, 95, 99, 103
src/puya/mir/stack_allocation
baileys.py	208	6	97%	31, 103, 123, 330–334, 359
frame_allocation.py	80	3	96%	21, 64–65
koopmans.py	61	1	98%	55
peephole.py	100	6	94%	75, 89, 99, 101, 103, 145
src/puya/teal
models.py	229	2	99%	292, 298
src/puya/teal/optimize
peephole.py	112	4	96%	154–164, 172
repeated_rotations.py	30	1	97%	13
repeated_rotations_search.py	88	6	93%	34, 40–41, 57, 67–68
TOTAL	16507	1917	88%

Tests	Skipped	Failures	Errors	Time
268	2 💤	0 ❌	0 🔥	2m 47s ⏱️

[achidlow]

pretty sure this will allow referencing a _ variable if inside, say, a function call that occurs on the LHS of an assignment, or any other situation where an rvalue context is entered from within an lvalue one