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7cf87b230b
The module already called itself github.com/luxfi/node while containing no node in Go: cmd/luxd was twenty-one lines that printed the size of a few types, and the Go column of the matrix measured a VM plugin. A repo that fetches the thing it claims to be has not replaced it, so the Go sources move in — 1515 files, the daemon and everything under it — and the build reaches outside this module for nothing. Rust and C++ sit beside it unchanged and are still measured against it by the differential. That is the point of one repo: the reference implementation and the two ports are the same checkout, so parity is a thing you can run rather than a thing you assert. Verified: builds, and the closure carries no lux-private — checked at build time rather than believed. The daemon starts twelve chains on a local network (P X C Q Z A B G K M F, plus D through its plugin) and reports healthy.
98 lines
3.0 KiB
Go
98 lines
3.0 KiB
Go
// Copyright (C) 2019-2026, Lux Industries Inc. All rights reserved.
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// See the file LICENSE for licensing terms.
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package txs
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import (
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"github.com/luxfi/utxo/nftfx"
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"github.com/luxfi/utxo/propertyfx"
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"github.com/luxfi/utxo/secp256k1fx"
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"github.com/luxfi/utxo/wire"
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)
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// fx dispatch — reflection-free. The set of fx primitives is a CLOSED sum type
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// (a finite coproduct of statically-known variants: secp256k1fx | nftfx |
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// propertyfx). Dispatch is therefore a total match on the variant tag — Go's
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// type switch, which the compiler lowers to a jump on the interface type tag,
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// exactly as an ADT `case` compiles. The tag then indexes a dense array. No
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// reflect.TypeOf, no map[reflect.Type]int: the mechanism is compile-time-typed,
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// the lookup is a single indexed load.
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// numTypeKinds bounds the dense fx-family enum (wire.TypeKind values 0x00..0x09,
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// rounded up). FxIndex indexes by that byte directly.
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const numTypeKinds = 16
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// FxIndex maps a wire.TypeKind (fx family) to its position in a parser's fx
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// list. Array-backed: Get is one bounds-checked load, no hashing. A slot of -1
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// means no fx of that family is registered.
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type FxIndex struct {
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byKind [numTypeKinds]int
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}
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// NewFxIndex returns an FxIndex with every family unregistered (-1).
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func NewFxIndex() *FxIndex {
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fi := &FxIndex{}
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for i := range fi.byKind {
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fi.byKind[i] = -1
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}
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return fi
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}
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// Set records that the fx family `kind` lives at list position `idx`.
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func (fi *FxIndex) Set(kind wire.TypeKind, idx int) {
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if int(kind) < numTypeKinds {
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fi.byKind[kind] = idx
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}
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}
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// Get returns the fx-list index for `kind`, or (0, false) when unregistered.
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func (fi *FxIndex) Get(kind wire.TypeKind) (int, bool) {
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if int(kind) >= numTypeKinds {
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return 0, false
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}
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idx := fi.byKind[kind]
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if idx < 0 {
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return 0, false
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}
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return idx, true
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}
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// GetFx maps a parsed fx value to its fx-list index — the reflection-free
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// replacement for `reflect.TypeOf(val)` + `map[reflect.Type]int`. It reads the
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// value's family via the compile-time-checked fxKindOf match, then indexes.
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func (fi *FxIndex) GetFx(val interface{}) (int, bool) {
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kind, ok := fxKindOf(val)
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if !ok {
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return 0, false
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}
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return fi.Get(kind)
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}
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// fxKindOf returns the fx family that owns a parsed fx primitive value — a
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// total match over the closed set of fx output/input/credential/operation
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// types. Adding a new (fx, shape) is a new case here; the compiler checks the
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// types are real. No reflection.
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func fxKindOf(val interface{}) (wire.TypeKind, bool) {
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switch val.(type) {
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case *secp256k1fx.TransferInput,
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*secp256k1fx.TransferOutput,
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*secp256k1fx.MintOutput,
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*secp256k1fx.MintOperation,
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*secp256k1fx.Credential:
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return wire.TypeKindSecp256k1, true
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case *nftfx.MintOutput,
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*nftfx.TransferOutput,
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*nftfx.MintOperation,
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*nftfx.TransferOperation,
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*nftfx.Credential:
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return wire.TypeKindNFT, true
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case *propertyfx.MintOutput,
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*propertyfx.OwnedOutput,
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*propertyfx.MintOperation,
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*propertyfx.BurnOperation,
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*propertyfx.Credential:
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return wire.TypeKindProperty, true
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}
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return 0, false
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}
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