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Harden D&D scene description extraction

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This commit is contained in:
Eric Rakestraw
2026-07-23 23:03:37 +00:00
parent 9614eb540d
commit e1c2f3c202
8 changed files with 118 additions and 763 deletions
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21
internal/modules/dnd/normalize/scenedescriptions/normalizer.go
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@@ -78,6 +78,10 @@ func normalizeList(input dnd.SceneDescriptionList, doc *source.SourceDocument) (
return dnd.SceneDescriptionList{}, fmt.Errorf("scenes must not be empty")
}
unitPositions := make(map[int]int, len(doc.Units))
for index, unit := range doc.Units {
unitPositions[unit.ID] = index
}
output := dnd.SceneDescriptionList{Scenes: make([]dnd.SceneDescription, len(input.Scenes))}
for index, scene := range input.Scenes {
scene.Title = strings.TrimSpace(scene.Title)
@@ -92,8 +96,8 @@ func normalizeList(input dnd.SceneDescriptionList, doc *source.SourceDocument) (
}
sort.SliceStable(output.Scenes, func(left, right int) bool {
leftStart, _ := source.UnitIndex(doc, output.Scenes[left].SourceRef.StartUnitID)
rightStart, _ := source.UnitIndex(doc, output.Scenes[right].SourceRef.StartUnitID)
leftStart := unitPositions[output.Scenes[left].SourceRef.StartUnitID]
rightStart := unitPositions[output.Scenes[right].SourceRef.StartUnitID]
if leftStart != rightStart {
return leftStart < rightStart
}
@@ -103,6 +107,7 @@ func normalizeList(input dnd.SceneDescriptionList, doc *source.SourceDocument) (
unique := make([]dnd.SceneDescription, 0, len(output.Scenes))
byID := make(map[string]dnd.SceneDescription, len(output.Scenes))
byRange := make(map[source.SourceRef]dnd.SceneDescription, len(output.Scenes))
seen := make(map[dnd.SceneDescription]struct{}, len(output.Scenes))
for _, scene := range output.Scenes {
if previous, ok := byID[scene.ID]; ok && !identical(previous, scene) {
return dnd.SceneDescriptionList{}, fmt.Errorf("scene ID %s has conflicting records", diagnostics.Quote(scene.ID))
@@ -110,11 +115,12 @@ func normalizeList(input dnd.SceneDescriptionList, doc *source.SourceDocument) (
if previous, ok := byRange[scene.SourceRef]; ok && !sameModelContent(previous, scene) {
return dnd.SceneDescriptionList{}, fmt.Errorf("source range %s has conflicting records", sourceRefLabel(scene.SourceRef))
}
if containsIdentical(unique, scene) {
if _, ok := seen[scene]; ok {
continue
}
byID[scene.ID] = scene
byRange[scene.SourceRef] = scene
seen[scene] = struct{}{}
unique = append(unique, scene)
}
output.Scenes = unique
@@ -129,15 +135,6 @@ func sameModelContent(left, right dnd.SceneDescription) bool {
return left.Kind == right.Kind && left.Title == right.Title && left.Summary == right.Summary
}
func containsIdentical(scenes []dnd.SceneDescription, target dnd.SceneDescription) bool {
for _, scene := range scenes {
if identical(scene, target) {
return true
}
}
return false
}
func sourceRefLabel(ref source.SourceRef) string {
return fmt.Sprintf("%s:%d-%d", diagnostics.Quote(ref.SourceID), ref.StartUnitID, ref.EndUnitID)
}