File: BinaryInstructionDecoder.swift

package info (click to toggle)
swiftlang 6.2.3-1
  • links: PTS, VCS
  • area: main
  • in suites: forky, sid
  • size: 2,856,264 kB
  • sloc: cpp: 9,995,718; ansic: 2,234,019; asm: 1,092,167; python: 313,940; objc: 82,726; f90: 80,126; lisp: 38,373; pascal: 25,580; sh: 20,378; ml: 5,058; perl: 4,751; makefile: 4,725; awk: 3,535; javascript: 3,018; xml: 918; fortran: 664; cs: 573; ruby: 396
file content (571 lines) | stat: -rw-r--r-- 20,969 bytes parent folder | download
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
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
376
377
378
379
380
381
382
383
384
385
386
387
388
389
390
391
392
393
394
395
396
397
398
399
400
401
402
403
404
405
406
407
408
409
410
411
412
413
414
415
416
417
418
419
420
421
422
423
424
425
426
427
428
429
430
431
432
433
434
435
436
437
438
439
440
441
442
443
444
445
446
447
448
449
450
451
452
453
454
455
456
457
458
459
460
461
462
463
464
465
466
467
468
469
470
471
472
473
474
475
476
477
478
479
480
481
482
483
484
485
486
487
488
489
490
491
492
493
494
495
496
497
498
499
500
501
502
503
504
505
506
507
508
509
510
511
512
513
514
515
516
517
518
519
520
521
522
523
524
525
526
527
528
529
530
531
532
533
534
535
536
537
538
539
540
541
542
543
544
545
546
547
548
549
550
551
552
553
554
555
556
557
558
559
560
561
562
563
564
565
566
567
568
569
570
571
// swift-format-ignore-file
//// Automatically generated by Utilities/Sources/WasmGen.swift
//// DO NOT EDIT DIRECTLY

import WasmTypes

@usableFromInline
protocol BinaryInstructionDecoder {
    /// Claim the next byte to be decoded
    @inlinable func claimNextByte() throws -> UInt8
    /// Visit unknown instruction
    @inlinable func visitUnknown(_ opcode: [UInt8]) throws
    /// Decode `block` immediates
    @inlinable mutating func visitBlock() throws -> BlockType
    /// Decode `loop` immediates
    @inlinable mutating func visitLoop() throws -> BlockType
    /// Decode `if` immediates
    @inlinable mutating func visitIf() throws -> BlockType
    /// Decode `br` immediates
    @inlinable mutating func visitBr() throws -> UInt32
    /// Decode `br_if` immediates
    @inlinable mutating func visitBrIf() throws -> UInt32
    /// Decode `br_table` immediates
    @inlinable mutating func visitBrTable() throws -> BrTable
    /// Decode `call` immediates
    @inlinable mutating func visitCall() throws -> UInt32
    /// Decode `call_indirect` immediates
    @inlinable mutating func visitCallIndirect() throws -> (typeIndex: UInt32, tableIndex: UInt32)
    /// Decode `return_call` immediates
    @inlinable mutating func visitReturnCall() throws -> UInt32
    /// Decode `return_call_indirect` immediates
    @inlinable mutating func visitReturnCallIndirect() throws -> (typeIndex: UInt32, tableIndex: UInt32)
    /// Decode `typedSelect` immediates
    @inlinable mutating func visitTypedSelect() throws -> ValueType
    /// Decode `local.get` immediates
    @inlinable mutating func visitLocalGet() throws -> UInt32
    /// Decode `local.set` immediates
    @inlinable mutating func visitLocalSet() throws -> UInt32
    /// Decode `local.tee` immediates
    @inlinable mutating func visitLocalTee() throws -> UInt32
    /// Decode `global.get` immediates
    @inlinable mutating func visitGlobalGet() throws -> UInt32
    /// Decode `global.set` immediates
    @inlinable mutating func visitGlobalSet() throws -> UInt32
    /// Decode `load` category immediates
    @inlinable mutating func visitLoad(_: Instruction.Load) throws -> MemArg
    /// Decode `store` category immediates
    @inlinable mutating func visitStore(_: Instruction.Store) throws -> MemArg
    /// Decode `memory.size` immediates
    @inlinable mutating func visitMemorySize() throws -> UInt32
    /// Decode `memory.grow` immediates
    @inlinable mutating func visitMemoryGrow() throws -> UInt32
    /// Decode `i32.const` immediates
    @inlinable mutating func visitI32Const() throws -> Int32
    /// Decode `i64.const` immediates
    @inlinable mutating func visitI64Const() throws -> Int64
    /// Decode `f32.const` immediates
    @inlinable mutating func visitF32Const() throws -> IEEE754.Float32
    /// Decode `f64.const` immediates
    @inlinable mutating func visitF64Const() throws -> IEEE754.Float64
    /// Decode `ref.null` immediates
    @inlinable mutating func visitRefNull() throws -> ReferenceType
    /// Decode `ref.func` immediates
    @inlinable mutating func visitRefFunc() throws -> UInt32
    /// Decode `memory.init` immediates
    @inlinable mutating func visitMemoryInit() throws -> UInt32
    /// Decode `data.drop` immediates
    @inlinable mutating func visitDataDrop() throws -> UInt32
    /// Decode `memory.copy` immediates
    @inlinable mutating func visitMemoryCopy() throws -> (dstMem: UInt32, srcMem: UInt32)
    /// Decode `memory.fill` immediates
    @inlinable mutating func visitMemoryFill() throws -> UInt32
    /// Decode `table.init` immediates
    @inlinable mutating func visitTableInit() throws -> (elemIndex: UInt32, table: UInt32)
    /// Decode `elem.drop` immediates
    @inlinable mutating func visitElemDrop() throws -> UInt32
    /// Decode `table.copy` immediates
    @inlinable mutating func visitTableCopy() throws -> (dstTable: UInt32, srcTable: UInt32)
    /// Decode `table.fill` immediates
    @inlinable mutating func visitTableFill() throws -> UInt32
    /// Decode `table.get` immediates
    @inlinable mutating func visitTableGet() throws -> UInt32
    /// Decode `table.set` immediates
    @inlinable mutating func visitTableSet() throws -> UInt32
    /// Decode `table.grow` immediates
    @inlinable mutating func visitTableGrow() throws -> UInt32
    /// Decode `table.size` immediates
    @inlinable mutating func visitTableSize() throws -> UInt32
}
@inlinable
func parseBinaryInstruction<V: InstructionVisitor, D: BinaryInstructionDecoder>(visitor: inout V, decoder: inout D) throws -> Bool {
    let opcode0 = try decoder.claimNextByte()
    switch opcode0 {
    case 0x00:
        try visitor.visitUnreachable()
    case 0x01:
        try visitor.visitNop()
    case 0x02:
        let (blockType) = try decoder.visitBlock()
        try visitor.visitBlock(blockType: blockType)
    case 0x03:
        let (blockType) = try decoder.visitLoop()
        try visitor.visitLoop(blockType: blockType)
    case 0x04:
        let (blockType) = try decoder.visitIf()
        try visitor.visitIf(blockType: blockType)
    case 0x05:
        try visitor.visitElse()
    case 0x0B:
        try visitor.visitEnd()
        return true
    case 0x0C:
        let (relativeDepth) = try decoder.visitBr()
        try visitor.visitBr(relativeDepth: relativeDepth)
    case 0x0D:
        let (relativeDepth) = try decoder.visitBrIf()
        try visitor.visitBrIf(relativeDepth: relativeDepth)
    case 0x0E:
        let (targets) = try decoder.visitBrTable()
        try visitor.visitBrTable(targets: targets)
    case 0x0F:
        try visitor.visitReturn()
    case 0x10:
        let (functionIndex) = try decoder.visitCall()
        try visitor.visitCall(functionIndex: functionIndex)
    case 0x11:
        let (typeIndex, tableIndex) = try decoder.visitCallIndirect()
        try visitor.visitCallIndirect(typeIndex: typeIndex, tableIndex: tableIndex)
    case 0x12:
        let (functionIndex) = try decoder.visitReturnCall()
        try visitor.visitReturnCall(functionIndex: functionIndex)
    case 0x13:
        let (typeIndex, tableIndex) = try decoder.visitReturnCallIndirect()
        try visitor.visitReturnCallIndirect(typeIndex: typeIndex, tableIndex: tableIndex)
    case 0x1A:
        try visitor.visitDrop()
    case 0x1B:
        try visitor.visitSelect()
    case 0x1C:
        let (type) = try decoder.visitTypedSelect()
        try visitor.visitTypedSelect(type: type)
    case 0x20:
        let (localIndex) = try decoder.visitLocalGet()
        try visitor.visitLocalGet(localIndex: localIndex)
    case 0x21:
        let (localIndex) = try decoder.visitLocalSet()
        try visitor.visitLocalSet(localIndex: localIndex)
    case 0x22:
        let (localIndex) = try decoder.visitLocalTee()
        try visitor.visitLocalTee(localIndex: localIndex)
    case 0x23:
        let (globalIndex) = try decoder.visitGlobalGet()
        try visitor.visitGlobalGet(globalIndex: globalIndex)
    case 0x24:
        let (globalIndex) = try decoder.visitGlobalSet()
        try visitor.visitGlobalSet(globalIndex: globalIndex)
    case 0x25:
        let (table) = try decoder.visitTableGet()
        try visitor.visitTableGet(table: table)
    case 0x26:
        let (table) = try decoder.visitTableSet()
        try visitor.visitTableSet(table: table)
    case 0x28:
        let (memarg) = try decoder.visitLoad(.i32Load)
        try visitor.visitLoad(.i32Load, memarg: memarg)
    case 0x29:
        let (memarg) = try decoder.visitLoad(.i64Load)
        try visitor.visitLoad(.i64Load, memarg: memarg)
    case 0x2A:
        let (memarg) = try decoder.visitLoad(.f32Load)
        try visitor.visitLoad(.f32Load, memarg: memarg)
    case 0x2B:
        let (memarg) = try decoder.visitLoad(.f64Load)
        try visitor.visitLoad(.f64Load, memarg: memarg)
    case 0x2C:
        let (memarg) = try decoder.visitLoad(.i32Load8S)
        try visitor.visitLoad(.i32Load8S, memarg: memarg)
    case 0x2D:
        let (memarg) = try decoder.visitLoad(.i32Load8U)
        try visitor.visitLoad(.i32Load8U, memarg: memarg)
    case 0x2E:
        let (memarg) = try decoder.visitLoad(.i32Load16S)
        try visitor.visitLoad(.i32Load16S, memarg: memarg)
    case 0x2F:
        let (memarg) = try decoder.visitLoad(.i32Load16U)
        try visitor.visitLoad(.i32Load16U, memarg: memarg)
    case 0x30:
        let (memarg) = try decoder.visitLoad(.i64Load8S)
        try visitor.visitLoad(.i64Load8S, memarg: memarg)
    case 0x31:
        let (memarg) = try decoder.visitLoad(.i64Load8U)
        try visitor.visitLoad(.i64Load8U, memarg: memarg)
    case 0x32:
        let (memarg) = try decoder.visitLoad(.i64Load16S)
        try visitor.visitLoad(.i64Load16S, memarg: memarg)
    case 0x33:
        let (memarg) = try decoder.visitLoad(.i64Load16U)
        try visitor.visitLoad(.i64Load16U, memarg: memarg)
    case 0x34:
        let (memarg) = try decoder.visitLoad(.i64Load32S)
        try visitor.visitLoad(.i64Load32S, memarg: memarg)
    case 0x35:
        let (memarg) = try decoder.visitLoad(.i64Load32U)
        try visitor.visitLoad(.i64Load32U, memarg: memarg)
    case 0x36:
        let (memarg) = try decoder.visitStore(.i32Store)
        try visitor.visitStore(.i32Store, memarg: memarg)
    case 0x37:
        let (memarg) = try decoder.visitStore(.i64Store)
        try visitor.visitStore(.i64Store, memarg: memarg)
    case 0x38:
        let (memarg) = try decoder.visitStore(.f32Store)
        try visitor.visitStore(.f32Store, memarg: memarg)
    case 0x39:
        let (memarg) = try decoder.visitStore(.f64Store)
        try visitor.visitStore(.f64Store, memarg: memarg)
    case 0x3A:
        let (memarg) = try decoder.visitStore(.i32Store8)
        try visitor.visitStore(.i32Store8, memarg: memarg)
    case 0x3B:
        let (memarg) = try decoder.visitStore(.i32Store16)
        try visitor.visitStore(.i32Store16, memarg: memarg)
    case 0x3C:
        let (memarg) = try decoder.visitStore(.i64Store8)
        try visitor.visitStore(.i64Store8, memarg: memarg)
    case 0x3D:
        let (memarg) = try decoder.visitStore(.i64Store16)
        try visitor.visitStore(.i64Store16, memarg: memarg)
    case 0x3E:
        let (memarg) = try decoder.visitStore(.i64Store32)
        try visitor.visitStore(.i64Store32, memarg: memarg)
    case 0x3F:
        let (memory) = try decoder.visitMemorySize()
        try visitor.visitMemorySize(memory: memory)
    case 0x40:
        let (memory) = try decoder.visitMemoryGrow()
        try visitor.visitMemoryGrow(memory: memory)
    case 0x41:
        let (value) = try decoder.visitI32Const()
        try visitor.visitI32Const(value: value)
    case 0x42:
        let (value) = try decoder.visitI64Const()
        try visitor.visitI64Const(value: value)
    case 0x43:
        let (value) = try decoder.visitF32Const()
        try visitor.visitF32Const(value: value)
    case 0x44:
        let (value) = try decoder.visitF64Const()
        try visitor.visitF64Const(value: value)
    case 0x45:
        try visitor.visitI32Eqz()
    case 0x46:
        try visitor.visitCmp(.i32Eq)
    case 0x47:
        try visitor.visitCmp(.i32Ne)
    case 0x48:
        try visitor.visitCmp(.i32LtS)
    case 0x49:
        try visitor.visitCmp(.i32LtU)
    case 0x4A:
        try visitor.visitCmp(.i32GtS)
    case 0x4B:
        try visitor.visitCmp(.i32GtU)
    case 0x4C:
        try visitor.visitCmp(.i32LeS)
    case 0x4D:
        try visitor.visitCmp(.i32LeU)
    case 0x4E:
        try visitor.visitCmp(.i32GeS)
    case 0x4F:
        try visitor.visitCmp(.i32GeU)
    case 0x50:
        try visitor.visitI64Eqz()
    case 0x51:
        try visitor.visitCmp(.i64Eq)
    case 0x52:
        try visitor.visitCmp(.i64Ne)
    case 0x53:
        try visitor.visitCmp(.i64LtS)
    case 0x54:
        try visitor.visitCmp(.i64LtU)
    case 0x55:
        try visitor.visitCmp(.i64GtS)
    case 0x56:
        try visitor.visitCmp(.i64GtU)
    case 0x57:
        try visitor.visitCmp(.i64LeS)
    case 0x58:
        try visitor.visitCmp(.i64LeU)
    case 0x59:
        try visitor.visitCmp(.i64GeS)
    case 0x5A:
        try visitor.visitCmp(.i64GeU)
    case 0x5B:
        try visitor.visitCmp(.f32Eq)
    case 0x5C:
        try visitor.visitCmp(.f32Ne)
    case 0x5D:
        try visitor.visitCmp(.f32Lt)
    case 0x5E:
        try visitor.visitCmp(.f32Gt)
    case 0x5F:
        try visitor.visitCmp(.f32Le)
    case 0x60:
        try visitor.visitCmp(.f32Ge)
    case 0x61:
        try visitor.visitCmp(.f64Eq)
    case 0x62:
        try visitor.visitCmp(.f64Ne)
    case 0x63:
        try visitor.visitCmp(.f64Lt)
    case 0x64:
        try visitor.visitCmp(.f64Gt)
    case 0x65:
        try visitor.visitCmp(.f64Le)
    case 0x66:
        try visitor.visitCmp(.f64Ge)
    case 0x67:
        try visitor.visitUnary(.i32Clz)
    case 0x68:
        try visitor.visitUnary(.i32Ctz)
    case 0x69:
        try visitor.visitUnary(.i32Popcnt)
    case 0x6A:
        try visitor.visitBinary(.i32Add)
    case 0x6B:
        try visitor.visitBinary(.i32Sub)
    case 0x6C:
        try visitor.visitBinary(.i32Mul)
    case 0x6D:
        try visitor.visitBinary(.i32DivS)
    case 0x6E:
        try visitor.visitBinary(.i32DivU)
    case 0x6F:
        try visitor.visitBinary(.i32RemS)
    case 0x70:
        try visitor.visitBinary(.i32RemU)
    case 0x71:
        try visitor.visitBinary(.i32And)
    case 0x72:
        try visitor.visitBinary(.i32Or)
    case 0x73:
        try visitor.visitBinary(.i32Xor)
    case 0x74:
        try visitor.visitBinary(.i32Shl)
    case 0x75:
        try visitor.visitBinary(.i32ShrS)
    case 0x76:
        try visitor.visitBinary(.i32ShrU)
    case 0x77:
        try visitor.visitBinary(.i32Rotl)
    case 0x78:
        try visitor.visitBinary(.i32Rotr)
    case 0x79:
        try visitor.visitUnary(.i64Clz)
    case 0x7A:
        try visitor.visitUnary(.i64Ctz)
    case 0x7B:
        try visitor.visitUnary(.i64Popcnt)
    case 0x7C:
        try visitor.visitBinary(.i64Add)
    case 0x7D:
        try visitor.visitBinary(.i64Sub)
    case 0x7E:
        try visitor.visitBinary(.i64Mul)
    case 0x7F:
        try visitor.visitBinary(.i64DivS)
    case 0x80:
        try visitor.visitBinary(.i64DivU)
    case 0x81:
        try visitor.visitBinary(.i64RemS)
    case 0x82:
        try visitor.visitBinary(.i64RemU)
    case 0x83:
        try visitor.visitBinary(.i64And)
    case 0x84:
        try visitor.visitBinary(.i64Or)
    case 0x85:
        try visitor.visitBinary(.i64Xor)
    case 0x86:
        try visitor.visitBinary(.i64Shl)
    case 0x87:
        try visitor.visitBinary(.i64ShrS)
    case 0x88:
        try visitor.visitBinary(.i64ShrU)
    case 0x89:
        try visitor.visitBinary(.i64Rotl)
    case 0x8A:
        try visitor.visitBinary(.i64Rotr)
    case 0x8B:
        try visitor.visitUnary(.f32Abs)
    case 0x8C:
        try visitor.visitUnary(.f32Neg)
    case 0x8D:
        try visitor.visitUnary(.f32Ceil)
    case 0x8E:
        try visitor.visitUnary(.f32Floor)
    case 0x8F:
        try visitor.visitUnary(.f32Trunc)
    case 0x90:
        try visitor.visitUnary(.f32Nearest)
    case 0x91:
        try visitor.visitUnary(.f32Sqrt)
    case 0x92:
        try visitor.visitBinary(.f32Add)
    case 0x93:
        try visitor.visitBinary(.f32Sub)
    case 0x94:
        try visitor.visitBinary(.f32Mul)
    case 0x95:
        try visitor.visitBinary(.f32Div)
    case 0x96:
        try visitor.visitBinary(.f32Min)
    case 0x97:
        try visitor.visitBinary(.f32Max)
    case 0x98:
        try visitor.visitBinary(.f32Copysign)
    case 0x99:
        try visitor.visitUnary(.f64Abs)
    case 0x9A:
        try visitor.visitUnary(.f64Neg)
    case 0x9B:
        try visitor.visitUnary(.f64Ceil)
    case 0x9C:
        try visitor.visitUnary(.f64Floor)
    case 0x9D:
        try visitor.visitUnary(.f64Trunc)
    case 0x9E:
        try visitor.visitUnary(.f64Nearest)
    case 0x9F:
        try visitor.visitUnary(.f64Sqrt)
    case 0xA0:
        try visitor.visitBinary(.f64Add)
    case 0xA1:
        try visitor.visitBinary(.f64Sub)
    case 0xA2:
        try visitor.visitBinary(.f64Mul)
    case 0xA3:
        try visitor.visitBinary(.f64Div)
    case 0xA4:
        try visitor.visitBinary(.f64Min)
    case 0xA5:
        try visitor.visitBinary(.f64Max)
    case 0xA6:
        try visitor.visitBinary(.f64Copysign)
    case 0xA7:
        try visitor.visitConversion(.i32WrapI64)
    case 0xA8:
        try visitor.visitConversion(.i32TruncF32S)
    case 0xA9:
        try visitor.visitConversion(.i32TruncF32U)
    case 0xAA:
        try visitor.visitConversion(.i32TruncF64S)
    case 0xAB:
        try visitor.visitConversion(.i32TruncF64U)
    case 0xAC:
        try visitor.visitConversion(.i64ExtendI32S)
    case 0xAD:
        try visitor.visitConversion(.i64ExtendI32U)
    case 0xAE:
        try visitor.visitConversion(.i64TruncF32S)
    case 0xAF:
        try visitor.visitConversion(.i64TruncF32U)
    case 0xB0:
        try visitor.visitConversion(.i64TruncF64S)
    case 0xB1:
        try visitor.visitConversion(.i64TruncF64U)
    case 0xB2:
        try visitor.visitConversion(.f32ConvertI32S)
    case 0xB3:
        try visitor.visitConversion(.f32ConvertI32U)
    case 0xB4:
        try visitor.visitConversion(.f32ConvertI64S)
    case 0xB5:
        try visitor.visitConversion(.f32ConvertI64U)
    case 0xB6:
        try visitor.visitConversion(.f32DemoteF64)
    case 0xB7:
        try visitor.visitConversion(.f64ConvertI32S)
    case 0xB8:
        try visitor.visitConversion(.f64ConvertI32U)
    case 0xB9:
        try visitor.visitConversion(.f64ConvertI64S)
    case 0xBA:
        try visitor.visitConversion(.f64ConvertI64U)
    case 0xBB:
        try visitor.visitConversion(.f64PromoteF32)
    case 0xBC:
        try visitor.visitConversion(.i32ReinterpretF32)
    case 0xBD:
        try visitor.visitConversion(.i64ReinterpretF64)
    case 0xBE:
        try visitor.visitConversion(.f32ReinterpretI32)
    case 0xBF:
        try visitor.visitConversion(.f64ReinterpretI64)
    case 0xC0:
        try visitor.visitUnary(.i32Extend8S)
    case 0xC1:
        try visitor.visitUnary(.i32Extend16S)
    case 0xC2:
        try visitor.visitUnary(.i64Extend8S)
    case 0xC3:
        try visitor.visitUnary(.i64Extend16S)
    case 0xC4:
        try visitor.visitUnary(.i64Extend32S)
    case 0xD0:
        let (type) = try decoder.visitRefNull()
        try visitor.visitRefNull(type: type)
    case 0xD1:
        try visitor.visitRefIsNull()
    case 0xD2:
        let (functionIndex) = try decoder.visitRefFunc()
        try visitor.visitRefFunc(functionIndex: functionIndex)
    case 0xFC:

        let opcode1 = try decoder.claimNextByte()
        switch opcode1 {
        case 0x00:
            try visitor.visitConversion(.i32TruncSatF32S)
        case 0x01:
            try visitor.visitConversion(.i32TruncSatF32U)
        case 0x02:
            try visitor.visitConversion(.i32TruncSatF64S)
        case 0x03:
            try visitor.visitConversion(.i32TruncSatF64U)
        case 0x04:
            try visitor.visitConversion(.i64TruncSatF32S)
        case 0x05:
            try visitor.visitConversion(.i64TruncSatF32U)
        case 0x06:
            try visitor.visitConversion(.i64TruncSatF64S)
        case 0x07:
            try visitor.visitConversion(.i64TruncSatF64U)
        case 0x08:
            let (dataIndex) = try decoder.visitMemoryInit()
            try visitor.visitMemoryInit(dataIndex: dataIndex)
        case 0x09:
            let (dataIndex) = try decoder.visitDataDrop()
            try visitor.visitDataDrop(dataIndex: dataIndex)
        case 0x0A:
            let (dstMem, srcMem) = try decoder.visitMemoryCopy()
            try visitor.visitMemoryCopy(dstMem: dstMem, srcMem: srcMem)
        case 0x0B:
            let (memory) = try decoder.visitMemoryFill()
            try visitor.visitMemoryFill(memory: memory)
        case 0x0C:
            let (elemIndex, table) = try decoder.visitTableInit()
            try visitor.visitTableInit(elemIndex: elemIndex, table: table)
        case 0x0D:
            let (elemIndex) = try decoder.visitElemDrop()
            try visitor.visitElemDrop(elemIndex: elemIndex)
        case 0x0E:
            let (dstTable, srcTable) = try decoder.visitTableCopy()
            try visitor.visitTableCopy(dstTable: dstTable, srcTable: srcTable)
        case 0x0F:
            let (table) = try decoder.visitTableGrow()
            try visitor.visitTableGrow(table: table)
        case 0x10:
            let (table) = try decoder.visitTableSize()
            try visitor.visitTableSize(table: table)
        case 0x11:
            let (table) = try decoder.visitTableFill()
            try visitor.visitTableFill(table: table)
        default:
            try decoder.visitUnknown([opcode0, opcode1])
        }
    default:
        try decoder.visitUnknown([opcode0])
    }
    return false
}