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Keep sequence projection storage proportional to assigned items

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This commit is contained in:
Eric Rakestraw
2026-10-24 14:04:26 +00:00
parent e94a0642ff
commit d0848290da
4 changed files with 99 additions and 47 deletions
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38
internal/engine/sequence_projection.go
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@@ -1,33 +1,17 @@
package engine
type sequenceItemProjectionIndex struct {
outputByInput []int
inputByOutput []int
outputByInput map[int]int
inputByOutput map[int]int
}
func newSequenceItemProjectionIndex(projections []sequenceItemProjection) sequenceItemProjectionIndex {
maxInput := -1
maxOutput := -1
for _, projection := range projections {
if projection.inputIndex > maxInput {
maxInput = projection.inputIndex
}
if projection.outputIndex > maxOutput {
maxOutput = projection.outputIndex
}
}
index := sequenceItemProjectionIndex{
outputByInput: make([]int, maxInput+1),
inputByOutput: make([]int, maxOutput+1),
}
for input := range index.outputByInput {
index.outputByInput[input] = -1
}
for output := range index.inputByOutput {
index.inputByOutput[output] = -1
outputByInput: make(map[int]int, len(projections)),
inputByOutput: make(map[int]int, len(projections)),
}
for _, projection := range projections {
if projection.inputIndex >= 0 && projection.inputIndex < len(index.outputByInput) && projection.outputIndex >= 0 && projection.outputIndex < len(index.inputByOutput) {
if projection.inputIndex >= 0 && projection.outputIndex >= 0 {
index.outputByInput[projection.inputIndex] = projection.outputIndex
index.inputByOutput[projection.outputIndex] = projection.inputIndex
}
@@ -36,15 +20,11 @@ func newSequenceItemProjectionIndex(projections []sequenceItemProjection) sequen
}
func (index sequenceItemProjectionIndex) outputForInput(inputIndex int) (int, bool) {
if inputIndex < 0 || inputIndex >= len(index.outputByInput) || index.outputByInput[inputIndex] < 0 {
return 0, false
}
return index.outputByInput[inputIndex], true
output, found := index.outputByInput[inputIndex]
return output, found
}
func (index sequenceItemProjectionIndex) inputForOutput(outputIndex int) (int, bool) {
if outputIndex < 0 || outputIndex >= len(index.inputByOutput) || index.inputByOutput[outputIndex] < 0 {
return 0, false
}
return index.inputByOutput[outputIndex], true
input, found := index.inputByOutput[outputIndex]
return input, found
}