# `MingaEditor.RenderModel.Window.DiagnosticIndex`
[🔗](https://github.com/jsmestad/minga/blob/main/lib/minga_editor/render_model/window/diagnostic_index.ex#L1)

Persistent resident diagnostic index with lazy suffix shifts.

Diagnostics are grouped by start row. Each compact entry keeps its end-row offset plus source and projected columns. Structural row splices therefore shift an unchanged suffix in logarithmic work, while in-place edits reproject only groups whose start or end touches an edited row.

# `compact`

```elixir
@type compact() ::
  {end_offset :: non_neg_integer(), start_source_col :: non_neg_integer(),
   end_source_col :: non_neg_integer(), Minga.Diagnostics.Diagnostic.encoding(),
   Minga.Diagnostics.Diagnostic.severity(), start_col :: non_neg_integer(),
   end_col :: non_neg_integer()}
```

# `t`

```elixir
@type t() :: %MingaEditor.RenderModel.Window.DiagnosticIndex{root: tree_node()}
```

# `tree_node`

```elixir
@type tree_node() ::
  MingaEditor.RenderModel.Window.LazyRowTree.t(tuple(), non_neg_integer())
```

# `work`

```elixir
@type work() :: %{
  groups_reprojected: non_neg_integer(),
  suffix_shifts: non_neg_integer()
}
```

# `apply_splices`

```elixir
@spec apply_splices(
  t(),
  [Minga.RenderModel.Window.RowSplice.t()],
  MingaEditor.RenderModel.Window.ResidentBuild.t()
) :: {t(), [non_neg_integer()], work()}
```

Applies immutable-base row splices and returns final start rows that need column replacement.

# `build`

```elixir
@spec build(
  [Minga.Diagnostics.Diagnostic.t()],
  MingaEditor.RenderModel.Window.ResidentBuild.t()
) :: t()
```

# `ranges_at`

```elixir
@spec ranges_at(t(), [non_neg_integer()]) :: [
  Minga.RenderModel.Window.DiagnosticRange.t()
]
```

# `to_ranges`

```elixir
@spec to_ranges(t()) :: [Minga.RenderModel.Window.DiagnosticRange.t()]
```

---

*Consult [api-reference.md](api-reference.md) for complete listing*