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wasm: define and use constants for some insturctions

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@0xb17bea125 2022-08-23 08:42:34 +09:00
parent abcc736653
commit db8021c931
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1 changed files with 9 additions and 3 deletions
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12
format/wasm/wasm.go
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@ -577,14 +577,20 @@ func decodeWASMModule(d *decode.D) {
var instrMapOnce sync.Once
const (
opcodeBlock Opcode = 0x02
opcodeLoop Opcode = 0x03
opcodeIf Opcode = 0x04
)
func decodeWASM(d *decode.D, _ any) any {
d.Endian = decode.LittleEndian
// delayed initialization to break initialization reference cycle
instrMapOnce.Do(func() {
instrMap[0x02] = instructionInfo{mnemonic: "block", f: decodeBlock}
instrMap[0x03] = instructionInfo{mnemonic: "loop", f: decodeLoop}
instrMap[0x04] = instructionInfo{mnemonic: "if", f: decodeIf}
instrMap[opcodeBlock] = instructionInfo{mnemonic: "block", f: decodeBlock}
instrMap[opcodeLoop] = instructionInfo{mnemonic: "loop", f: decodeLoop}
instrMap[opcodeIf] = instructionInfo{mnemonic: "if", f: decodeIf}
})
decodeWASMModule(d)