Merge pull request #58 from levineuwirth/session-9.2-current-line-quad-backgrounds
session 9.2 + 9.3 — CurrentLine quad backgrounds + peer-presence fix
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18a255dfb8
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@ -0,0 +1,89 @@
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# pmacs-gpu quad-backgrounds audit
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Date: 2026-05-29
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Closes the milestone framed in
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[`pmacs-gpu-quad-backgrounds-framing.md`](pmacs-gpu-quad-backgrounds-framing.md),
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which retires Phase A finding **A8** (background-bearing decoration
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kinds storable but unrenderable). Scope: sessions 9.1 (`Selection`),
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9.2 (`CurrentLine`), and 9.3 (peer-presence sourcing + the perf and
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correctness fixes the manual validation forced).
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## Evidence
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| Session | Surface | Evidence |
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|---|---|---|
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| 9.1 | `Selection` quad backgrounds | Reused session-7's `QuadRenderer`; added `decoration_kind_to_bg_color` + glyph-extent rect builder + render-order (Q#2 α). Merged before visual validation. |
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| 9.2 | `CurrentLine` quad backgrounds | Producer emits `CurrentLine` from the active window cursor (Q#1 α); cadence falls out of the M11.4 diff (Q#3 β, no extra state). |
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| 9.3 | Peer-presence sourcing | pmacs-gpu consumes `PresenceUpdate`; `Selection`/`CurrentLine` washes track the editing peer. Manual validation drove three follow-on fixes (QB1–QB3). |
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## Findings
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| ID | Finding | Category | Class | Resolution |
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|---|---|---|---|---|
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| Bet #1 | Multi-line vertex decomposition | Geometric-decomposition | — | Surfaced as **QB3** (worse than predicted: not just multi-line, *any* line past 0). |
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| Bet #2 | `Selection` ↔ `CurrentLine` overlap precedence | Convention-vs-contract | — | Did not surface as a fix. Alpha-blend in M11.4 sort order (CurrentLine under Selection) reads correctly; no precedence contract needed. |
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| Bet #3 | `CurrentLine` cadence floods the consumer | Producer-cadence | Small | Structurally right, implementation smaller: the existing M11.4 diff suppresses same-line re-emits; no `last_cursor_line` cache needed. |
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| QB1 | Per-window `Selection`/`CurrentLine` are inert in a read-only mirror (own cursor pinned at 0, no input path) | State-derivation-location | Structural→resolved | Source the washes from `PresenceUpdate` (the editing peer), consumer-only; wire already flowed. |
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| QB2 | Daemon recomputes the whole-file projection every tick for the semantic frontend — `scoped_style_spans` runs the tree-sitter query over the entire declared (whole-buffer) viewport + clones the theme, gating TUI input on the shared loop | Producer-frequency | Small (perf) | `StyleGate` (parse-bundle `Arc` + generation + viewport) skips the query on cursor-only ticks; `scoped_decorations` materializes the rope once per call instead of twice. |
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| QB3 | Background washes blind past line 0: `LayoutGlyph::{start,end}` are line-relative but were compared against whole-buffer byte ranges | Library-API-verification | Small (correctness) | Rebase glyph offsets by `line_byte_offsets[run.line_i]` before comparison. |
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## Predicted vs actual
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| Predicted bet | Result | Count |
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|---|---:|---:|
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| #1 geometric decomposition | Surfaced (as QB3) | 1 |
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| #2 overlap precedence | Did not surface | 0 |
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| #3 cadence | Surfaced, smaller than predicted | 1 |
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Unpredicted categories that surfaced:
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| Category | Count | Findings |
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|---|---:|---|
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| State-derivation-location (read-only mirror has no own cursor) | 1 | QB1 |
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| Producer-frequency (whole-file recompute per tick) | 1 | QB2 |
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| Library-API-verification (line-relative glyph offsets) | 1 | QB3 |
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Score summary:
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- Predicted categories surfaced: 2 of 3 (#1 via QB3, #3).
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- Predicted not surfaced: 1 of 3 (#2 overlap precedence — alpha-blend
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sufficed).
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- Unpredicted categories surfaced: 3 (QB1 mirror sourcing, QB2 perf,
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QB3 glyph-offset space).
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- Small findings absorbed: 5 (Bet #3, QB1, QB2, QB3, plus the framing
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doc's already-recorded alpha-visibility tweak).
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- Structural findings deferred: 0 (QB1 was structural-shaped but
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resolved consumer-only without a contract change).
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**Methodology note.** The three load-bearing findings were all
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*unpredicted*. The categorical bets were aimed at the wire-shape and
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composition surfaces; the real failures were in (a) the read-only
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mirror's cursor semantics, (b) per-tick producer cost, and (c) a
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cosmic-text API misread. The last echoes the standing M10.10
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library-API-verification lesson: glyph-offset coordinate space should
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have been verified against the cosmic-text source before the first
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glyph-extent rect builder shipped (session 9.1), not after manual
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validation in 9.3.
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## Close
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A8 is closed for the foreground+background decoration arc:
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- `Selection`: peer selection renders as a translucent background.
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- `CurrentLine`: peer cursor line renders as a subtle wash.
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- Both source from `PresenceUpdate`; own-window decorations stay
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forward-looking for when pmacs-gpu gains its own input (Phase B).
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Not closed (documented, deferred):
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- `SearchMatch` / `SearchMatchActive`: awaiting a search feature in
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pmacs core (framing Q#4).
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- Per-peer stable colors, peer caret glyph + label: single-peer mirror
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reuses the Selection/CurrentLine colors.
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- Own-cursor vs peer-cursor merge once pmacs-gpu has input.
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- Consumer-side per-frame minimap rebuild (cacheable like `StyleGate`)
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— not load-bearing after QB2; revisit if frame timing shows it.
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Debug aids retained (off by default): `PMACS_GPU_DEBUG_PRESENCE`,
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`PMACS_GPU_DEBUG_FRAME`.
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@ -1,9 +1,11 @@
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# pmacs-gpu — quad-background framing
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**Status: framing pass; pre-implementation.** Retires Phase A finding
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A8 (background-bearing decoration kinds storable but unrenderable).
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Sessions queued: 9.1 = `Selection` backgrounds; 9.2 = `CurrentLine`
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backgrounds; search backgrounds deferred to a later arc.
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**Status: CLOSED 2026-05-29.** Sessions 9.1 (`Selection`), 9.2
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(`CurrentLine`), 9.3 (peer-presence sourcing) all merged; finding A8
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retired. Scoring + the QB1–QB3 follow-on findings are in
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[`pmacs-gpu-quad-backgrounds-audit.md`](pmacs-gpu-quad-backgrounds-audit.md).
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Search backgrounds (Q#4) remain deferred to a later arc. The sections
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below are the original framing pass, preserved.
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This is the per-milestone framing artifact for the quad-pipeline work
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that closes Phase A's one deferred structural finding. It inherits the
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@ -188,6 +190,59 @@ Phase A finalization closes with `SearchMatch{,Active}` rendering
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documented-but-not-implemented; the rule-(iii) classification is "small
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finding deferred awaiting upstream feature."
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### Q#5 — read-only mirror cursor source: stance (peer-presence)
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**Surfaced during 9.2 manual validation (structural finding QB1).**
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Sessions 9.1 and 9.2 emit `Selection` / `CurrentLine` from the
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*viewing* frontend's own window
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(`scoped_decorations` reads `active_window_for(self.frontend_id)`).
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pmacs-gpu is a read-only viewer with no input path: it never sends
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`Key`/cursor events, so its own window's `cursor` stays pinned at 0
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and its `selection` stays `None`. The two per-window decoration kinds
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are therefore **inert** in pmacs-gpu — `CurrentLine` paints a static
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line-0 wash and `Selection` never appears. Every other rendered
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family (`StyleSpans`, diagnostics, inlay hints, minimap) is keyed to
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the *buffer* (shared), which is why only these two are affected.
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**Stance: peer presence is the authoritative cursor/selection source
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for a read-only mirror.** What the user watches in pmacs-gpu is the
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*editing* frontend's (their TUI's) cursor and selection. That is
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`PresenceUpdate` — already on the wire (`InstanceMessage::PresenceUpdate
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{ frontend_id, buffer_id, cursor, selection }`), already broadcast by
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the daemon to every `multi_frontend` recipient, and pmacs-gpu already
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negotiates `multi_frontend: true`. It simply drops the message at its
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`_ => None` catch-all today.
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The fix is **consumer-only** — no producer or protocol change:
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- pmacs-gpu consumes `PresenceUpdate`, storing per-peer
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`(buffer_id, cursor, selection)`.
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- The quad-background path renders `Selection` / `CurrentLine` washes
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from peer presence (the editing peer's cursor line + selection)
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rather than from the inert own-window `current_decorations` of those
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two kinds. Diagnostic (foreground) decorations are buffer-keyed and
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unaffected.
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- The producer keeps emitting own-window `Selection` / `CurrentLine`
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(9.1/9.2) unchanged — correct and forward-looking for when pmacs-gpu
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gains its own input in Phase B; simply unconsumed-for-backgrounds by
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the mirror today.
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Deliberately deferred within this stance:
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- **Per-peer stable colors** (the audit's `PresenceUpdate`
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color-stability item). The single-peer mirror reuses the `Selection`
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/ `CurrentLine` colors so the visual reads as "my editing, mirrored."
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Multiple distinct peers each getting a stable color is a later
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refinement.
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- **Peer caret glyph + label** ("user N editing here"). This session
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renders the line/selection *backgrounds* only; the caret bar and
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name label are future presence work.
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- **Own-cursor vs peer-cursor merge.** Once pmacs-gpu has input, its
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own `CurrentLine` (now meaningful) and peer presences coexist with
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distinct colors. Out of scope until input lands.
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This is session 9.3.
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## Finding feedback loop
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Rule (iii) from `pmacs-gpu-design.md` carries forward unchanged:
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@ -24,6 +24,7 @@
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mod attach;
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use std::collections::HashMap;
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use std::path::PathBuf;
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use std::sync::Arc;
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@ -33,7 +34,8 @@ use glyphon::{
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};
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use pmacs_protocol::{
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AdornmentContent, AdornmentPlacement, BufferId, ByteRange, Decoration, DecorationKind,
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DecorationSegment, InlineAdornment, InstanceMessage, StyleSegment, StyleSpan,
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DecorationSegment, FrontendId, InlineAdornment, InstanceMessage, SelectionSnapshot,
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StyleSegment, StyleSpan,
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cell::{Color as CellColor, Style as CellStyle},
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};
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use wgpu::MultisampleState;
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@ -268,6 +270,28 @@ struct State {
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/// arrives, matching the ownership rule used by style spans,
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/// decorations, and inline adornments.
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current_summary: Option<FileStyleSummaryState>,
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/// Peer presence (session 9.3), keyed by source frontend id. Each
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/// entry is one *other* attached frontend's cursor + selection,
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/// delivered via `InstanceMessage::PresenceUpdate`. A read-only
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/// mirror has no cursor of its own (no input path), so its own
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/// `Selection` / `CurrentLine` decorations are inert; the editing
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/// peer's presence is what the user actually watches. The quad-
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/// background path renders `Selection` / `CurrentLine` washes from
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/// these entries rather than from `current_decorations`. Sender
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/// exclusion at the daemon means our own id never appears here.
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peer_presences: HashMap<FrontendId, PeerPresence>,
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}
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/// One peer frontend's cursor + selection in a buffer, from
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/// `InstanceMessage::PresenceUpdate`. Byte offsets are in the buffer's
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/// coordinate space; the renderer maps them to glyph rectangles via
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/// the local layout and clamps to text length, so a presence that
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/// briefly lags an edit can never index out.
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#[derive(Clone, Copy, Debug)]
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struct PeerPresence {
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buffer_id: BufferId,
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cursor: u64,
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selection: Option<SelectionSnapshot>,
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}
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struct QuadRenderer {
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@ -428,6 +452,7 @@ impl QuadRenderer {
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}
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impl State {
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#[allow(clippy::too_many_lines)] // linear GPU/font/surface setup; splitting would obscure ordering.
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fn new(event_loop: &ActiveEventLoop, initial_text: &str) -> Self {
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let window = Arc::new(
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event_loop
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@ -537,6 +562,7 @@ impl State {
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current_decorations: Vec::new(),
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current_adornments: Vec::new(),
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current_summary: None,
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peer_presences: HashMap::new(),
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}
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}
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@ -593,9 +619,11 @@ impl State {
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/// - `Goodbye` — surfaced via the reader thread's clean-EOF path,
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/// not handled here.
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///
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/// Remaining semantic variants plus the grid variants (`CellDelta`,
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/// `Cursor`, `CursorByte`) and presence updates are ignored in
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/// session 7 — they land in subsequent Phase A sessions.
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/// The grid variants (`CellDelta`, `Cursor`, `CursorByte`) are
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/// ignored — pmacs-gpu lays out locally and tracks the cursor via
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/// `PresenceUpdate` (session 9.3). Remaining semantic variants land
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/// in subsequent Phase A sessions.
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#[allow(clippy::too_many_lines)] // per-variant match dispatcher; one arm per InstanceMessage.
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fn apply_attach_message(&mut self, msg: InstanceMessage) -> Option<ViewportSend> {
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match msg {
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InstanceMessage::BufferSnapshot {
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@ -618,6 +646,11 @@ impl State {
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self.current_decorations.clear();
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self.current_adornments.clear();
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self.current_summary = None;
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// Peer cursors are anchored in the prior buffer's
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// coordinate space; drop them so a stale offset can't
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// paint against the new rope before the next
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// PresenceUpdate arrives.
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self.peer_presences.clear();
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if !self.set_text(&text) {
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self.reshape();
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}
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@ -727,6 +760,41 @@ impl State {
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self.apply_file_style_summary(buffer_id, generation, lines);
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None
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}
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// Session 9.3 — peer presence. The editing frontend's
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// cursor + selection drive the `CurrentLine` / `Selection`
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// washes for this read-only mirror (finding QB1). Store
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// per source frontend; a redraw recomputes the background
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// rects from `peer_presences`. We never receive our own
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// (daemon sender exclusion).
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InstanceMessage::PresenceUpdate {
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frontend_id,
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buffer_id,
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cursor,
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selection,
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} => {
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// Run with `PMACS_GPU_DEBUG_PRESENCE=1` to confirm peer
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// presence is arriving and routed to the right buffer.
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// A `buf != current` line means the peer is on a buffer
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// this mirror isn't displaying (no wash expected); no
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// line at all means the message isn't reaching us.
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if debug_presence() {
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eprintln!(
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"pmacs-gpu presence: fid={frontend_id:?} buf={buffer_id:?} \
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current={:?} cursor={cursor} sel={selection:?}",
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self.current_buffer_id
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);
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}
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self.peer_presences.insert(
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frontend_id,
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PeerPresence {
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buffer_id,
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cursor,
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selection,
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},
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);
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self.window.request_redraw();
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None
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}
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_ => None,
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}
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}
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@ -952,6 +1020,7 @@ impl State {
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self.window.request_redraw();
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}
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#[allow(clippy::too_many_lines)] // linear per-frame GPU sequence + optional timing.
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fn render(&mut self) {
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let frame = match self.surface.get_current_texture() {
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wgpu::CurrentSurfaceTexture::Success(frame)
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@ -969,6 +1038,7 @@ impl State {
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let view = frame
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.texture
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.create_view(&wgpu::TextureViewDescriptor::default());
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let frame_start = debug_frame().then(std::time::Instant::now);
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let bg_vertices = self.decoration_background_vertex_bytes();
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let bg_vertex_count = (bg_vertices.len() / QUAD_VERTEX_STRIDE as usize) as u32;
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let bg_buffer = (!bg_vertices.is_empty()).then(|| {
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@ -979,6 +1049,7 @@ impl State {
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usage: wgpu::BufferUsages::VERTEX,
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})
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});
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let after_bg = debug_frame().then(std::time::Instant::now);
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let minimap_vertices = self.minimap_vertex_bytes();
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let minimap_vertex_count = (minimap_vertices.len() / QUAD_VERTEX_STRIDE as usize) as u32;
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let minimap_buffer = (!minimap_vertices.is_empty()).then(|| {
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@ -989,6 +1060,7 @@ impl State {
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usage: wgpu::BufferUsages::VERTEX,
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})
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});
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let after_minimap = debug_frame().then(std::time::Instant::now);
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let text_bounds_right = self.text_bounds_right();
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self.text_renderer
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@ -1058,6 +1130,21 @@ impl State {
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self.queue.submit(std::iter::once(encoder.finish()));
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frame.present();
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self.atlas.trim();
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if let (Some(start), Some(after_bg), Some(after_minimap)) =
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(frame_start, after_bg, after_minimap)
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{
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let end = std::time::Instant::now();
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let us = |a: std::time::Instant, b: std::time::Instant| b.duration_since(a).as_micros();
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eprintln!(
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"pmacs-gpu frame: bg={}us minimap={}us prepare+submit={}us total={}us peers={}",
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us(start, after_bg),
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us(after_bg, after_minimap),
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us(after_minimap, end),
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us(start, end),
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self.peer_presences.len(),
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);
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}
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}
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fn text_bounds_right(&self) -> i32 {
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@ -1093,59 +1180,105 @@ impl State {
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rects_to_vertex_bytes(&rects, self.config.width, self.config.height)
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}
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/// Vertex bytes for quad-pipeline background rectangles covering
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/// every background-bearing decoration in `current_decorations`.
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/// Walks `cosmic_text::Buffer::layout_runs()` to map each
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/// decoration's `ByteRange` into per-visual-line pixel rectangles:
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/// a multi-line selection produces one rect per layout run that
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/// carries at least one glyph whose `[start, end)` overlaps the
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/// decoration. Returns an empty `Vec` when no background-bearing
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/// decoration intersects any laid-out glyph.
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/// Vertex bytes for quad-pipeline background rectangles. Session
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/// 9.3 sources `CurrentLine` / `Selection` washes from peer
|
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/// presence (the editing frontend's cursor + selection) rather
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/// than from `current_decorations`: this is a read-only mirror, so
|
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/// its own per-window `Selection` / `CurrentLine` decorations are
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/// inert (cursor pinned at 0, no selection). See finding QB1 in
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/// `docs/pmacs-gpu-quad-backgrounds-framing.md`.
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fn decoration_background_vertex_bytes(&self) -> Vec<u8> {
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let rects = self.decoration_background_rects();
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let rects = self.peer_background_rects();
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rects_to_vertex_bytes(&rects, self.config.width, self.config.height)
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}
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fn decoration_background_rects(&self) -> Vec<MinimapRect> {
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/// Background rectangles for every peer's cursor line + selection
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/// in the current buffer. `CurrentLine` covers the source line
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/// holding the peer cursor; `Selection` covers the peer's selected
|
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/// byte range. Both map byte ranges to per-visual-line glyph
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/// extents via `peer_glyph_extent_rects`. Single-peer mirrors reuse
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/// the `Selection` / `CurrentLine` colors so the visual reads as
|
||||
/// "my editing, mirrored"; per-peer distinct colors are deferred.
|
||||
fn peer_background_rects(&self) -> Vec<MinimapRect> {
|
||||
let Some(buffer_id) = self.current_buffer_id else {
|
||||
return Vec::new();
|
||||
};
|
||||
let text_len = self.current_text.len() as u64;
|
||||
// Buffer-absolute byte offset of each `\n`-delimited line,
|
||||
// indexed by `LayoutRun::line_i`. `LayoutGlyph::{start,end}` are
|
||||
// offsets within the *original line*, not the whole buffer, so
|
||||
// every byte range below must be rebased per line before it can
|
||||
// be matched against glyph offsets.
|
||||
let line_offsets = line_byte_offsets(&self.current_text);
|
||||
let mut rects = Vec::new();
|
||||
for d in &self.current_decorations {
|
||||
let Some(color) = decoration_kind_to_bg_color(d.kind) else {
|
||||
continue;
|
||||
};
|
||||
let lo = d.range.start;
|
||||
let hi = d.range.end;
|
||||
if hi <= lo {
|
||||
for presence in self.peer_presences.values() {
|
||||
if presence.buffer_id != buffer_id {
|
||||
continue;
|
||||
}
|
||||
for run in self.buffer.layout_runs() {
|
||||
let mut min_x: Option<f32> = None;
|
||||
let mut max_x: Option<f32> = None;
|
||||
for glyph in run.glyphs {
|
||||
let g_start = glyph.start as u64;
|
||||
let g_end = glyph.end as u64;
|
||||
if g_end <= lo || g_start >= hi {
|
||||
continue;
|
||||
}
|
||||
let x0 = glyph.x;
|
||||
let x1 = glyph.x + glyph.w;
|
||||
min_x = Some(min_x.map_or(x0, |v| v.min(x0)));
|
||||
max_x = Some(max_x.map_or(x1, |v| v.max(x1)));
|
||||
}
|
||||
if let (Some(x0), Some(x1)) = (min_x, max_x)
|
||||
&& x1 > x0
|
||||
{
|
||||
rects.push(MinimapRect {
|
||||
x: TEXT_LEFT + x0,
|
||||
y: TEXT_TOP + run.line_top,
|
||||
w: x1 - x0,
|
||||
h: run.line_height,
|
||||
color,
|
||||
});
|
||||
// CurrentLine: the source line containing the peer cursor.
|
||||
if let Some(color) = decoration_kind_to_bg_color(DecorationKind::CurrentLine) {
|
||||
let (lo, hi) = source_line_range(&self.current_text, presence.cursor);
|
||||
self.push_glyph_extent_rects(&mut rects, &line_offsets, lo, hi, color);
|
||||
}
|
||||
// Selection: the peer's selected byte range, normalized.
|
||||
if let Some(sel) = presence.selection
|
||||
&& let Some(color) = decoration_kind_to_bg_color(DecorationKind::Selection)
|
||||
{
|
||||
let lo = sel.anchor.min(sel.active).min(text_len);
|
||||
let hi = sel.anchor.max(sel.active).min(text_len);
|
||||
if hi > lo {
|
||||
self.push_glyph_extent_rects(&mut rects, &line_offsets, lo, hi, color);
|
||||
}
|
||||
}
|
||||
}
|
||||
rects
|
||||
}
|
||||
|
||||
/// Push one rect per visual line whose glyphs overlap the
|
||||
/// buffer-absolute byte range `[lo, hi)`, spanning the matching
|
||||
/// glyphs' horizontal extent. A range crossing visual-line
|
||||
/// boundaries (wrapped or multi-line) fans out into one rect per
|
||||
/// run. `line_offsets[run.line_i]` rebases the run's line-relative
|
||||
/// glyph offsets into buffer-absolute space for the comparison.
|
||||
fn push_glyph_extent_rects(
|
||||
&self,
|
||||
rects: &mut Vec<MinimapRect>,
|
||||
line_offsets: &[u64],
|
||||
lo: u64,
|
||||
hi: u64,
|
||||
color: [f32; 4],
|
||||
) {
|
||||
if hi <= lo {
|
||||
return;
|
||||
}
|
||||
for run in self.buffer.layout_runs() {
|
||||
let line_base = line_offsets.get(run.line_i).copied().unwrap_or(0);
|
||||
let mut min_x: Option<f32> = None;
|
||||
let mut max_x: Option<f32> = None;
|
||||
for glyph in run.glyphs {
|
||||
let g_start = line_base + glyph.start as u64;
|
||||
let g_end = line_base + glyph.end as u64;
|
||||
if g_end <= lo || g_start >= hi {
|
||||
continue;
|
||||
}
|
||||
let x0 = glyph.x;
|
||||
let x1 = glyph.x + glyph.w;
|
||||
min_x = Some(min_x.map_or(x0, |v| v.min(x0)));
|
||||
max_x = Some(max_x.map_or(x1, |v| v.max(x1)));
|
||||
}
|
||||
if let (Some(x0), Some(x1)) = (min_x, max_x)
|
||||
&& x1 > x0
|
||||
{
|
||||
rects.push(MinimapRect {
|
||||
x: TEXT_LEFT + x0,
|
||||
y: TEXT_TOP + run.line_top,
|
||||
w: x1 - x0,
|
||||
h: run.line_height,
|
||||
color,
|
||||
});
|
||||
}
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
#[derive(Clone, Copy, Debug)]
|
||||
|
|
@ -1425,6 +1558,49 @@ fn rgb_to_minimap_color(r: u8, g: u8, b: u8) -> [f32; 4] {
|
|||
]
|
||||
}
|
||||
|
||||
/// One-shot env flag: `PMACS_GPU_DEBUG_PRESENCE=1` logs each received
|
||||
/// `PresenceUpdate`. Read once (the env lock is not free per call) and
|
||||
/// cached for the process lifetime.
|
||||
fn debug_presence() -> bool {
|
||||
static FLAG: std::sync::OnceLock<bool> = std::sync::OnceLock::new();
|
||||
*FLAG.get_or_init(|| std::env::var_os("PMACS_GPU_DEBUG_PRESENCE").is_some())
|
||||
}
|
||||
|
||||
/// One-shot env flag: `PMACS_GPU_DEBUG_FRAME=1` logs per-`render()`
|
||||
/// sub-phase timings (background rects, minimap rects, glyph prepare,
|
||||
/// total) so a perceived cursor-tracking slowdown can be localized to
|
||||
/// a specific phase.
|
||||
fn debug_frame() -> bool {
|
||||
static FLAG: std::sync::OnceLock<bool> = std::sync::OnceLock::new();
|
||||
*FLAG.get_or_init(|| std::env::var_os("PMACS_GPU_DEBUG_FRAME").is_some())
|
||||
}
|
||||
|
||||
/// Buffer-absolute byte offset of the start of each `\n`-delimited
|
||||
/// line (index 0 = byte 0). Indexed by cosmic-text's
|
||||
/// `LayoutRun::line_i` to rebase line-relative glyph offsets.
|
||||
fn line_byte_offsets(text: &str) -> Vec<u64> {
|
||||
let mut starts = vec![0u64];
|
||||
for (i, b) in text.bytes().enumerate() {
|
||||
if b == b'\n' {
|
||||
starts.push(i as u64 + 1);
|
||||
}
|
||||
}
|
||||
starts
|
||||
}
|
||||
|
||||
/// Byte range `[start, end)` of the source line containing `cursor`:
|
||||
/// `start` is just after the previous `\n` (or 0), `end` is just after
|
||||
/// the next `\n` (or text length). Mirrors the producer's
|
||||
/// `current_line_range` so the rendered `CurrentLine` wash covers the
|
||||
/// same bytes the producer would. `cursor` is clamped to the text
|
||||
/// length so a peer presence that briefly lags an edit is safe.
|
||||
fn source_line_range(text: &str, cursor: u64) -> (u64, u64) {
|
||||
let c = (cursor as usize).min(text.len());
|
||||
let start = text[..c].rfind('\n').map_or(0, |i| i + 1);
|
||||
let end = text[c..].find('\n').map_or(text.len(), |i| c + i + 1);
|
||||
(start as u64, end as u64)
|
||||
}
|
||||
|
||||
fn rects_to_vertex_bytes(
|
||||
rects: &[MinimapRect],
|
||||
surface_width: u32,
|
||||
|
|
@ -1680,11 +1856,10 @@ fn decoration_kind_to_color(kind: DecorationKind) -> Option<glyphon::Color> {
|
|||
/// kinds (the four diagnostic severities) so the two helpers form a
|
||||
/// total cover with no overlap.
|
||||
///
|
||||
/// Session 9.1 ships `Selection` only. `CurrentLine` is wired in 9.2
|
||||
/// (this helper will return its color then); `SearchMatch` /
|
||||
/// `SearchMatchActive` wait on a search feature in pmacs core
|
||||
/// (Q#4 in `docs/pmacs-gpu-quad-backgrounds-framing.md`), so they
|
||||
/// continue to return `None` here.
|
||||
/// Session 9.1 shipped `Selection`; session 9.2 adds `CurrentLine`.
|
||||
/// `SearchMatch` / `SearchMatchActive` wait on a search feature in
|
||||
/// pmacs core (Q#4 in `docs/pmacs-gpu-quad-backgrounds-framing.md`),
|
||||
/// so they continue to return `None` here.
|
||||
#[allow(clippy::match_same_arms)] // each `None` arm has a distinct rationale comment.
|
||||
fn decoration_kind_to_bg_color(kind: DecorationKind) -> Option<[f32; 4]> {
|
||||
match kind {
|
||||
|
|
@ -1694,8 +1869,13 @@ fn decoration_kind_to_bg_color(kind: DecorationKind) -> Option<[f32; 4]> {
|
|||
// because the text render pass runs after this one in the same
|
||||
// render pass (Q#2 stance α).
|
||||
DecorationKind::Selection => Some([0.31, 0.42, 0.82, 0.30]),
|
||||
// 9.2 will fill this in.
|
||||
DecorationKind::CurrentLine => None,
|
||||
// Blue-grey wash, quietest of the background kinds (it's always
|
||||
// on) but still visible. The first 9.2/9.3 value (alpha 0.08)
|
||||
// computed to ~10/255 above the dark clear color and was
|
||||
// swamped by glyphs on a text line — invisible in practice.
|
||||
// 0.22 keeps it subtle vs Selection's 0.30 while actually
|
||||
// reading as a current-line band.
|
||||
DecorationKind::CurrentLine => Some([0.55, 0.60, 0.75, 0.22]),
|
||||
// Deferred to the search-feature arc.
|
||||
DecorationKind::SearchMatch | DecorationKind::SearchMatchActive => None,
|
||||
// Foreground-only — handled by [`decoration_kind_to_color`].
|
||||
|
|
@ -1764,14 +1944,49 @@ mod tests {
|
|||
}
|
||||
|
||||
#[test]
|
||||
fn bg_color_helper_covers_selection_and_returns_none_for_unrendered_kinds() {
|
||||
// Session 9.1 ships `Selection` only.
|
||||
fn source_line_range_locates_enclosing_line() {
|
||||
// "abc\nde\nfgh": newlines at byte 3 and 6; len = 10.
|
||||
let text = "abc\nde\nfgh";
|
||||
// Cursor on line 0 → [0, 4) (includes the trailing \n).
|
||||
assert_eq!(source_line_range(text, 0), (0, 4));
|
||||
assert_eq!(source_line_range(text, 2), (0, 4));
|
||||
// Start of line 1 → [4, 7).
|
||||
assert_eq!(source_line_range(text, 4), (4, 7));
|
||||
assert_eq!(source_line_range(text, 5), (4, 7));
|
||||
// Last line has no trailing \n → [7, 10).
|
||||
assert_eq!(source_line_range(text, 8), (7, 10));
|
||||
// Cursor past end clamps to the last line, never indexes out.
|
||||
assert_eq!(source_line_range(text, 99), (7, 10));
|
||||
}
|
||||
|
||||
#[test]
|
||||
fn line_byte_offsets_indexes_each_logical_line() {
|
||||
// "abc\nde\nfgh": lines start at bytes 0, 4, 7. Indexed by
|
||||
// LayoutRun::line_i to rebase line-relative glyph offsets.
|
||||
assert_eq!(line_byte_offsets("abc\nde\nfgh"), vec![0, 4, 7]);
|
||||
// Trailing newline yields a final empty line at byte len.
|
||||
assert_eq!(line_byte_offsets("a\nb\n"), vec![0, 2, 4]);
|
||||
// No newline: one line at 0.
|
||||
assert_eq!(line_byte_offsets("abc"), vec![0]);
|
||||
assert_eq!(line_byte_offsets(""), vec![0]);
|
||||
}
|
||||
|
||||
#[test]
|
||||
fn source_line_range_handles_empty_and_leading_newline() {
|
||||
assert_eq!(source_line_range("", 0), (0, 0));
|
||||
// "\nx": cursor 0 is on the empty first line [0, 1).
|
||||
assert_eq!(source_line_range("\nx", 0), (0, 1));
|
||||
// cursor 1 is on line 1 → [1, 2).
|
||||
assert_eq!(source_line_range("\nx", 1), (1, 2));
|
||||
}
|
||||
|
||||
#[test]
|
||||
fn bg_color_helper_covers_selection_and_current_line() {
|
||||
// Sessions 9.1 + 9.2: Selection and CurrentLine paint.
|
||||
assert!(decoration_kind_to_bg_color(DecorationKind::Selection).is_some());
|
||||
assert!(decoration_kind_to_bg_color(DecorationKind::CurrentLine).is_some());
|
||||
|
||||
// CurrentLine is wired in session 9.2.
|
||||
assert!(decoration_kind_to_bg_color(DecorationKind::CurrentLine).is_none());
|
||||
|
||||
// Search-feature arc.
|
||||
// Search-feature arc — still deferred.
|
||||
assert!(decoration_kind_to_bg_color(DecorationKind::SearchMatch).is_none());
|
||||
assert!(decoration_kind_to_bg_color(DecorationKind::SearchMatchActive).is_none());
|
||||
|
||||
|
|
@ -1804,16 +2019,13 @@ mod tests {
|
|||
] {
|
||||
let fg = decoration_kind_to_color(kind).is_some();
|
||||
let bg = decoration_kind_to_bg_color(kind).is_some();
|
||||
// Background helper returns None for kinds that 9.1
|
||||
// deliberately defers (CurrentLine, the search pair); for
|
||||
// each of those, decoration_kind_to_color is also None.
|
||||
// That is the "neither yet" state — the
|
||||
// exclusive-or test exempts it.
|
||||
// Background helper returns None for the search pair —
|
||||
// deferred to the search-feature arc. For both of those,
|
||||
// decoration_kind_to_color is also None. That is the
|
||||
// "neither yet" state — the exclusive-or test exempts it.
|
||||
let deferred = matches!(
|
||||
kind,
|
||||
DecorationKind::CurrentLine
|
||||
| DecorationKind::SearchMatch
|
||||
| DecorationKind::SearchMatchActive
|
||||
DecorationKind::SearchMatch | DecorationKind::SearchMatchActive
|
||||
);
|
||||
assert!(
|
||||
deferred || (fg ^ bg),
|
||||
|
|
|
|||
|
|
@ -114,6 +114,46 @@ pub struct SemanticRenderState {
|
|||
/// already has and emits nothing. First emission happens on the
|
||||
/// first frame for a buffer; further emissions only after edits.
|
||||
last_summary: HashMap<BufferId, u64>,
|
||||
/// `StyleSpans` recompute gate (perf). `scoped_style_spans` runs
|
||||
/// the tree-sitter highlights query over the *whole declared
|
||||
/// viewport* (which the GPU frontend sets to the entire buffer)
|
||||
/// and clones the theme — too expensive to repeat on every tick.
|
||||
/// The styling depends only on the parse bundle, the CRDT
|
||||
/// generation, and the viewport — never the cursor — so a gate
|
||||
/// built from those lets cursor-only ticks skip the query entirely.
|
||||
/// Only the grammar (tree-sitter) path is gated; the LSP-token path
|
||||
/// has no comparably cheap handle and recomputes as before.
|
||||
last_style_gate: HashMap<BufferId, StyleGate>,
|
||||
}
|
||||
|
||||
/// Recompute gate for [`scoped_style_spans`] on a grammar-backed
|
||||
/// buffer. Holds the current parse bundle `Arc` so its address stays
|
||||
/// stable while cached — comparing by `Arc::ptr_eq` then can't be
|
||||
/// fooled by a freed bundle's address being reused (ABA). Equal gates
|
||||
/// ⇒ identical spans ⇒ the tree-sitter query can be skipped.
|
||||
/// `generation` is included so a CRDT edit still forces the M11.7
|
||||
/// full-resync even when the parse bundle hasn't re-landed yet.
|
||||
#[derive(Clone)]
|
||||
struct StyleGate {
|
||||
/// Current parse bundle, or `None` when none has landed yet.
|
||||
bundle: Option<std::sync::Arc<crate::syntax::ParseTreeBundle>>,
|
||||
/// CRDT generation of the buffer.
|
||||
generation: u64,
|
||||
/// Declared viewport.
|
||||
visible: ByteRange,
|
||||
}
|
||||
|
||||
impl StyleGate {
|
||||
/// True when both gates would produce identical style spans.
|
||||
fn matches(&self, other: &Self) -> bool {
|
||||
self.generation == other.generation
|
||||
&& self.visible == other.visible
|
||||
&& match (&self.bundle, &other.bundle) {
|
||||
(Some(a), Some(b)) => std::sync::Arc::ptr_eq(a, b),
|
||||
(None, None) => true,
|
||||
_ => false,
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
impl SemanticRenderState {
|
||||
|
|
@ -128,6 +168,7 @@ impl SemanticRenderState {
|
|||
last_decorations: HashMap::new(),
|
||||
last_adornments: HashMap::new(),
|
||||
last_summary: HashMap::new(),
|
||||
last_style_gate: HashMap::new(),
|
||||
}
|
||||
}
|
||||
|
||||
|
|
@ -172,63 +213,31 @@ impl SemanticRenderState {
|
|||
let mut out = Vec::new();
|
||||
|
||||
// --- StyleSpans (T M11.2 producer, T M11.4 diff) ---
|
||||
let spans = scoped_style_spans(state, &vp);
|
||||
let prev = self.last_sent.get(&vp.buffer_id);
|
||||
// Resync when there is no baseline, the declared viewport
|
||||
// region moved (scoping window changed), OR the CRDT
|
||||
// generation advanced (T M11.7: text edits shift byte
|
||||
// positions, so prior spans are stale and incremental
|
||||
// updates can't restore the full viewport — see
|
||||
// `LastFrame`'s doc comment).
|
||||
let full = prev.is_none_or(|p| p.visible != vp.visible || p.generation != generation);
|
||||
if full {
|
||||
// The first frame for this buffer/viewport. One segment
|
||||
// covering the declared viewport carries the whole scoped
|
||||
// set (possibly empty → frontend clears the viewport).
|
||||
self.last_sent.insert(
|
||||
vp.buffer_id,
|
||||
LastFrame {
|
||||
visible: vp.visible,
|
||||
items: spans.clone(),
|
||||
generation,
|
||||
},
|
||||
);
|
||||
out.push(InstanceMessage::StyleSpans {
|
||||
buffer_id: vp.buffer_id,
|
||||
generation,
|
||||
full: true,
|
||||
segments: vec![StyleSegment {
|
||||
range: vp.visible,
|
||||
spans,
|
||||
}],
|
||||
});
|
||||
// Perf gate: `scoped_style_spans` runs the tree-sitter query
|
||||
// over the whole viewport + clones the theme. For a grammar-
|
||||
// backed buffer it's a pure function of (bundle revision,
|
||||
// generation, viewport), so a cursor-only tick — same key,
|
||||
// already-sent baseline — can skip the whole block. The LSP-
|
||||
// token path returns `None` (no cheap revision) and recomputes
|
||||
// every tick as before.
|
||||
let style_gate = grammar_style_key(state, &vp, generation);
|
||||
let style_unchanged = match (&style_gate, self.last_style_gate.get(&vp.buffer_id)) {
|
||||
(Some(g), Some(prev)) => g.matches(prev) && self.last_sent.contains_key(&vp.buffer_id),
|
||||
_ => false,
|
||||
};
|
||||
if style_unchanged {
|
||||
// Styling cannot have changed since the last computation;
|
||||
// emit nothing and skip the query.
|
||||
} else {
|
||||
let prev = prev.expect("checked is_none_or above");
|
||||
let intervals = changed_intervals(&prev.items, &spans, |s| s.range);
|
||||
if !intervals.is_empty() {
|
||||
let segments = intervals
|
||||
.into_iter()
|
||||
.map(|range| StyleSegment {
|
||||
range,
|
||||
spans: clip_style_spans(range, &spans),
|
||||
})
|
||||
.collect();
|
||||
self.last_sent.insert(
|
||||
vp.buffer_id,
|
||||
LastFrame {
|
||||
visible: vp.visible,
|
||||
items: spans,
|
||||
generation,
|
||||
},
|
||||
);
|
||||
out.push(InstanceMessage::StyleSpans {
|
||||
buffer_id: vp.buffer_id,
|
||||
generation,
|
||||
full: false,
|
||||
segments,
|
||||
});
|
||||
match style_gate {
|
||||
Some(g) => {
|
||||
self.last_style_gate.insert(vp.buffer_id, g);
|
||||
}
|
||||
None => {
|
||||
self.last_style_gate.remove(&vp.buffer_id);
|
||||
}
|
||||
}
|
||||
// No dirty interval → styling unchanged → emit nothing.
|
||||
self.emit_style_spans(state, &vp, generation, &mut out);
|
||||
}
|
||||
|
||||
// --- Decorations (T M11.3 producer, T M11.4 diff) ---
|
||||
|
|
@ -368,22 +377,123 @@ impl SemanticRenderState {
|
|||
/// frontend already owns (it has `CursorByte`) — emitting it would
|
||||
/// couple a visual-motion concern to the instance, against the
|
||||
/// contract boundary.
|
||||
/// Compute the scoped style spans and push a `StyleSpans` message
|
||||
/// (full resync or M11.4 incremental) when they differ from the
|
||||
/// last sent baseline. Extracted from `render_frame` so the perf
|
||||
/// gate there can skip it wholesale on unchanged ticks.
|
||||
fn emit_style_spans(
|
||||
&mut self,
|
||||
state: &EditorState,
|
||||
vp: &DeclaredViewport,
|
||||
generation: u64,
|
||||
out: &mut Vec<InstanceMessage>,
|
||||
) {
|
||||
let spans = scoped_style_spans(state, vp);
|
||||
let prev = self.last_sent.get(&vp.buffer_id);
|
||||
// Resync when there is no baseline, the declared viewport
|
||||
// region moved (scoping window changed), OR the CRDT
|
||||
// generation advanced (T M11.7: text edits shift byte
|
||||
// positions, so prior spans are stale and incremental
|
||||
// updates can't restore the full viewport).
|
||||
let full = prev.is_none_or(|p| p.visible != vp.visible || p.generation != generation);
|
||||
if full {
|
||||
self.last_sent.insert(
|
||||
vp.buffer_id,
|
||||
LastFrame {
|
||||
visible: vp.visible,
|
||||
items: spans.clone(),
|
||||
generation,
|
||||
},
|
||||
);
|
||||
out.push(InstanceMessage::StyleSpans {
|
||||
buffer_id: vp.buffer_id,
|
||||
generation,
|
||||
full: true,
|
||||
segments: vec![StyleSegment {
|
||||
range: vp.visible,
|
||||
spans,
|
||||
}],
|
||||
});
|
||||
} else {
|
||||
let prev = prev.expect("checked is_none_or above");
|
||||
let intervals = changed_intervals(&prev.items, &spans, |s| s.range);
|
||||
if !intervals.is_empty() {
|
||||
let segments = intervals
|
||||
.into_iter()
|
||||
.map(|range| StyleSegment {
|
||||
range,
|
||||
spans: clip_style_spans(range, &spans),
|
||||
})
|
||||
.collect();
|
||||
self.last_sent.insert(
|
||||
vp.buffer_id,
|
||||
LastFrame {
|
||||
visible: vp.visible,
|
||||
items: spans,
|
||||
generation,
|
||||
},
|
||||
);
|
||||
out.push(InstanceMessage::StyleSpans {
|
||||
buffer_id: vp.buffer_id,
|
||||
generation,
|
||||
full: false,
|
||||
segments,
|
||||
});
|
||||
}
|
||||
// No dirty interval → styling unchanged → emit nothing.
|
||||
}
|
||||
}
|
||||
|
||||
fn scoped_decorations(&self, state: &EditorState, vp: &DeclaredViewport) -> Vec<Decoration> {
|
||||
let core = state.core.borrow();
|
||||
let registry = core.registry.clone();
|
||||
let reg = registry.borrow();
|
||||
let mut out = Vec::new();
|
||||
|
||||
// Selection — per-window (per-frontend) state, already byte
|
||||
// offsets. Only this session's active window for the declared
|
||||
// buffer contributes.
|
||||
// Byte<->line mapping is needed by both the CurrentLine
|
||||
// derivation and the diagnostics projection, and
|
||||
// `buffer_source_bytes` is an O(n) rope copy. This runs every
|
||||
// tick in the daemon's hot loop, so materialize at most once
|
||||
// per call and reuse — never twice (the pre-9.2 shape copied
|
||||
// separately in each branch).
|
||||
let mut line_info: Option<(Vec<u8>, Vec<u64>)> = None;
|
||||
|
||||
// Selection + CurrentLine — per-window (per-frontend) state.
|
||||
// Only this session's active window for the declared buffer
|
||||
// contributes either kind.
|
||||
//
|
||||
// Q#3 (per-line CurrentLine cadence, stance β) falls out of the
|
||||
// existing M11.4 diff: `render_frame` compares the new
|
||||
// decoration Vec against the last sent one and emits only on
|
||||
// change. Horizontal cursor motion within a single line
|
||||
// produces an identical `CurrentLine` range and an identical
|
||||
// overall Vec, so `changed_intervals` returns empty and nothing
|
||||
// ships. No `last_cursor_line` cache is needed at this layer.
|
||||
if let Some(win) = core.active_window_for(self.frontend_id)
|
||||
&& win.buffer_id == vp.buffer_id
|
||||
&& let Some((lo, hi)) = win.region()
|
||||
&& let Some(range) = clip_to_viewport(lo, hi, vp)
|
||||
{
|
||||
out.push(Decoration {
|
||||
range,
|
||||
kind: DecorationKind::Selection,
|
||||
});
|
||||
if let Some((lo, hi)) = win.region()
|
||||
&& let Some(range) = clip_to_viewport(lo, hi, vp)
|
||||
{
|
||||
out.push(Decoration {
|
||||
range,
|
||||
kind: DecorationKind::Selection,
|
||||
});
|
||||
}
|
||||
if let Ok(buf) = reg.get(vp.buffer_id) {
|
||||
let (source, line_starts) = line_info.get_or_insert_with(|| {
|
||||
let s = buffer_source_bytes(buf);
|
||||
let ls = line_start_offsets(&s);
|
||||
(s, ls)
|
||||
});
|
||||
let (lo, hi) = current_line_range(line_starts, source.len() as u64, win.cursor);
|
||||
if let Some(range) = clip_to_viewport(lo, hi, vp) {
|
||||
out.push(Decoration {
|
||||
range,
|
||||
kind: DecorationKind::CurrentLine,
|
||||
});
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
// Diagnostics — keyed in the shared store by the file URI the
|
||||
|
|
@ -404,31 +514,24 @@ impl SemanticRenderState {
|
|||
let guard = store.lock().expect("diag store mutex poisoned");
|
||||
(guard.for_uri(&uri).to_vec(), guard.is_stale(&uri))
|
||||
};
|
||||
if !is_stale && !diags.is_empty() {
|
||||
let registry = core.registry.clone();
|
||||
let reg = registry.borrow();
|
||||
if let Ok(buf) = reg.get(vp.buffer_id) {
|
||||
let source = buffer_source_bytes(buf);
|
||||
let line_starts = line_start_offsets(&source);
|
||||
for d in &diags {
|
||||
let lo = line_col_to_byte(
|
||||
&line_starts,
|
||||
source.len() as u64,
|
||||
d.start_line,
|
||||
d.start_col,
|
||||
);
|
||||
let hi = line_col_to_byte(
|
||||
&line_starts,
|
||||
source.len() as u64,
|
||||
d.end_line,
|
||||
d.end_col,
|
||||
);
|
||||
if let Some(range) = clip_to_viewport(lo, hi, vp) {
|
||||
out.push(Decoration {
|
||||
range,
|
||||
kind: severity_to_kind(d.severity),
|
||||
});
|
||||
}
|
||||
if !is_stale
|
||||
&& !diags.is_empty()
|
||||
&& let Ok(buf) = reg.get(vp.buffer_id)
|
||||
{
|
||||
let (source, line_starts) = line_info.get_or_insert_with(|| {
|
||||
let s = buffer_source_bytes(buf);
|
||||
let ls = line_start_offsets(&s);
|
||||
(s, ls)
|
||||
});
|
||||
let source_len = source.len() as u64;
|
||||
for d in &diags {
|
||||
let lo = line_col_to_byte(line_starts, source_len, d.start_line, d.start_col);
|
||||
let hi = line_col_to_byte(line_starts, source_len, d.end_line, d.end_col);
|
||||
if let Some(range) = clip_to_viewport(lo, hi, vp) {
|
||||
out.push(Decoration {
|
||||
range,
|
||||
kind: severity_to_kind(d.severity),
|
||||
});
|
||||
}
|
||||
}
|
||||
}
|
||||
|
|
@ -655,6 +758,31 @@ fn buffer_source_bytes(buf: &crate::buffer::Buffer) -> Vec<u8> {
|
|||
bytes
|
||||
}
|
||||
|
||||
/// Byte range `(start, end)` of the line containing `cursor`, where
|
||||
/// `start` is the position right after the previous `\n` (or 0 for the
|
||||
/// first line) and `end` is the position of the next `\n` (or
|
||||
/// `source_len` for the last line). Used by `scoped_decorations` to
|
||||
/// emit `DecorationKind::CurrentLine`; clamps so a cursor at or past
|
||||
/// `source_len` returns the last line's range rather than indexing
|
||||
/// out.
|
||||
fn current_line_range(line_starts: &[u64], source_len: u64, cursor: u64) -> (u64, u64) {
|
||||
// `partition_point` returns the count of leading elements satisfying
|
||||
// the predicate, i.e. the index of the first `line_start > cursor`.
|
||||
// Subtracting 1 yields the index of the largest `line_start <=
|
||||
// cursor`. `line_starts` always starts with 0, so the saturating
|
||||
// sub is defensive against an empty `line_starts`.
|
||||
let idx = line_starts
|
||||
.partition_point(|&start| start <= cursor)
|
||||
.saturating_sub(1);
|
||||
let lo = line_starts.get(idx).copied().unwrap_or(0);
|
||||
let hi = line_starts
|
||||
.get(idx + 1)
|
||||
.copied()
|
||||
.unwrap_or(source_len)
|
||||
.min(source_len);
|
||||
(lo, hi)
|
||||
}
|
||||
|
||||
/// Byte offset of the start of each line (index 0 = byte 0; one entry
|
||||
/// per line, where a line is a maximal run ended by `\n`).
|
||||
fn line_start_offsets(source: &[u8]) -> Vec<u64> {
|
||||
|
|
@ -683,6 +811,25 @@ fn line_col_to_byte(line_starts: &[u64], source_len: u64, line: u32, col: u32) -
|
|||
(line_start + u64::from(col)).min(line_end).min(source_len)
|
||||
}
|
||||
|
||||
/// Cheap recompute-gate key for [`scoped_style_spans`] on a grammar-
|
||||
/// backed buffer. Returns `None` for buffers with no tree-sitter view
|
||||
/// (the LSP-token path), which has no comparably cheap revision handle
|
||||
/// and therefore is never gated. `bundle.source_revision` is read via
|
||||
/// the same `current()` accessor `scoped_style_spans` uses, so the key
|
||||
/// flips exactly when the spans it would produce can change.
|
||||
fn grammar_style_key(
|
||||
state: &EditorState,
|
||||
vp: &DeclaredViewport,
|
||||
generation: u64,
|
||||
) -> Option<StyleGate> {
|
||||
let handle = state.syntax_registry.view(vp.buffer_id)?;
|
||||
Some(StyleGate {
|
||||
bundle: handle.current(),
|
||||
generation,
|
||||
visible: vp.visible,
|
||||
})
|
||||
}
|
||||
|
||||
/// Compute the styled byte runs intersecting the declared viewport,
|
||||
/// mapped through the active theme. Spans are clipped to the viewport
|
||||
/// and to the parsed source length; runs that resolve to the default
|
||||
|
|
@ -1124,6 +1271,132 @@ mod tests {
|
|||
assert_eq!(decos[0].range, ByteRange { start: 3, end: 5 });
|
||||
}
|
||||
|
||||
#[test]
|
||||
fn current_line_range_finds_enclosing_line() {
|
||||
// "abc\nde\nfgh": line_starts = [0, 4, 7]; source_len = 10.
|
||||
let line_starts = vec![0u64, 4, 7];
|
||||
let len = 10u64;
|
||||
|
||||
// Cursor at byte 0 → line 0 = [0, 4).
|
||||
assert_eq!(current_line_range(&line_starts, len, 0), (0, 4));
|
||||
// Cursor anywhere within line 0 → still line 0.
|
||||
assert_eq!(current_line_range(&line_starts, len, 3), (0, 4));
|
||||
// Cursor on the newline byte still belongs to the line it
|
||||
// terminates.
|
||||
assert_eq!(current_line_range(&line_starts, len, 3), (0, 4));
|
||||
// Cursor at line 1 start → line 1 = [4, 7).
|
||||
assert_eq!(current_line_range(&line_starts, len, 4), (4, 7));
|
||||
// Cursor in last line → [7, len).
|
||||
assert_eq!(current_line_range(&line_starts, len, 8), (7, 10));
|
||||
// Cursor at exactly source_len (past last byte) → still last
|
||||
// line; clamps cleanly without indexing out.
|
||||
assert_eq!(current_line_range(&line_starts, len, len), (7, 10));
|
||||
}
|
||||
|
||||
#[test]
|
||||
fn current_line_projects_as_a_decoration_for_cursor_on_seed() {
|
||||
// "abc\nde": cursor at byte 0 → CurrentLine = [0, 4).
|
||||
let state = empty_state();
|
||||
let buffer_id = active_buffer(&state);
|
||||
seed_diagnostic(&state, buffer_id);
|
||||
let mut s = local();
|
||||
s.set_viewport(buffer_id, ByteRange { start: 0, end: 64 }, 0);
|
||||
|
||||
let (_full, decos) =
|
||||
decorations_of(&s.render_frame(&state)).expect("a Decorations message");
|
||||
let current = decos
|
||||
.iter()
|
||||
.find(|d| d.kind == DecorationKind::CurrentLine)
|
||||
.expect("CurrentLine present (cursor on line 0)");
|
||||
assert_eq!(
|
||||
current.range,
|
||||
ByteRange { start: 0, end: 4 },
|
||||
"line 0 of \"abc\\nde\" spans bytes [0, 4)"
|
||||
);
|
||||
}
|
||||
|
||||
#[test]
|
||||
fn current_line_skipped_when_active_window_is_a_different_buffer() {
|
||||
// Producer must only emit per-window state for windows whose
|
||||
// active buffer matches the projected viewport. The vp.buffer_id
|
||||
// regression test (decorations_use_vp_buffer_not_active_buffer)
|
||||
// exercises this for Selection; assert it for CurrentLine too.
|
||||
let state = empty_state();
|
||||
let scratch_id = active_buffer(&state);
|
||||
let file_id = {
|
||||
let core = state.core.borrow();
|
||||
core.registry
|
||||
.borrow_mut()
|
||||
.create_from_bytes("secondary".to_owned(), b"abc\nde")
|
||||
};
|
||||
assert_ne!(scratch_id, file_id);
|
||||
|
||||
let mut s = local();
|
||||
// Project the *non-active* file buffer.
|
||||
s.set_viewport(file_id, ByteRange { start: 0, end: 64 }, 0);
|
||||
let (_full, decos) =
|
||||
decorations_of(&s.render_frame(&state)).expect("a Decorations message");
|
||||
assert!(
|
||||
decos.iter().all(|d| d.kind != DecorationKind::CurrentLine),
|
||||
"CurrentLine must not project against a viewport whose buffer is not the active window's buffer; got {decos:?}"
|
||||
);
|
||||
}
|
||||
|
||||
#[test]
|
||||
fn same_line_cursor_motion_does_not_re_emit_decorations() {
|
||||
// Q#3 stance β: horizontal cursor motion within the same line
|
||||
// must not re-ship a Decorations frame. The existing M11.4
|
||||
// changed_intervals diff gives this for free — same line means
|
||||
// identical decoration ranges means an empty interval list
|
||||
// means no emission.
|
||||
let state = empty_state();
|
||||
let buffer_id = active_buffer(&state);
|
||||
{
|
||||
let core = state.core.borrow();
|
||||
core.registry
|
||||
.borrow_mut()
|
||||
.get_mut(buffer_id)
|
||||
.expect("active buffer")
|
||||
.apply_edit(crate::buffer::EditOp::Insert {
|
||||
pos: 0,
|
||||
bytes: b"abcdefghij\nklmno",
|
||||
})
|
||||
.expect("seed");
|
||||
}
|
||||
let mut s = local();
|
||||
s.set_viewport(buffer_id, ByteRange { start: 0, end: 64 }, 0);
|
||||
let _first = s.render_frame(&state); // initial full
|
||||
assert!(
|
||||
s.render_frame(&state).is_empty(),
|
||||
"steady state must be silent"
|
||||
);
|
||||
|
||||
// Move cursor from byte 0 to byte 5 (same line).
|
||||
{
|
||||
let mut core = state.core.borrow_mut();
|
||||
core.active_window_mut().cursor = 5;
|
||||
}
|
||||
assert!(
|
||||
s.render_frame(&state).is_empty(),
|
||||
"same-line cursor motion must not re-emit Decorations"
|
||||
);
|
||||
|
||||
// Cross a `\n` (byte 10) → line changes → re-emission.
|
||||
{
|
||||
let mut core = state.core.borrow_mut();
|
||||
core.active_window_mut().cursor = 12;
|
||||
}
|
||||
let msgs = s.render_frame(&state);
|
||||
let (_full, decos) =
|
||||
decorations_of(&msgs).expect("line-change must ship a Decorations frame");
|
||||
let current = decos
|
||||
.iter()
|
||||
.find(|d| d.kind == DecorationKind::CurrentLine)
|
||||
.expect("CurrentLine present");
|
||||
// Line 1 of "abcdefghij\nklmno" starts at byte 11.
|
||||
assert_eq!(current.range, ByteRange { start: 11, end: 16 });
|
||||
}
|
||||
|
||||
#[test]
|
||||
fn diagnostics_project_with_line_col_to_byte_and_severity() {
|
||||
// "abc\nde": line 0 at byte 0, line 1 at byte 4.
|
||||
|
|
@ -1135,10 +1408,17 @@ mod tests {
|
|||
|
||||
let (_full, decos) =
|
||||
decorations_of(&s.render_frame(&state)).expect("a Decorations message");
|
||||
assert_eq!(decos.len(), 1);
|
||||
assert_eq!(decos[0].kind, DecorationKind::DiagnosticWarning);
|
||||
// Session 9.2 added `CurrentLine` to the projection: line 0
|
||||
// (cursor at byte 0) emits as a `CurrentLine` decoration in
|
||||
// addition to the seeded warning. This test pins the
|
||||
// diagnostic projection's byte math; assert that decoration's
|
||||
// shape rather than the total count.
|
||||
let warning = decos
|
||||
.iter()
|
||||
.find(|d| d.kind == DecorationKind::DiagnosticWarning)
|
||||
.expect("the seeded warning");
|
||||
// line 1 starts at byte 4; cols [0,2) → bytes [4,6).
|
||||
assert_eq!(decos[0].range, ByteRange { start: 4, end: 6 });
|
||||
assert_eq!(warning.range, ByteRange { start: 4, end: 6 });
|
||||
}
|
||||
|
||||
/// T M11.8 regression: when the diag store's entry for the URI
|
||||
|
|
|
|||
|
|
@ -5069,24 +5069,38 @@ fn m4_29_real_rust_analyzer_inlay_hints_via_auto_attach() {
|
|||
let mut state = EditorState::new();
|
||||
real_server_open_and_init(&mut state, "rust", &rust_analyzer, &root_disp, &file_disp);
|
||||
|
||||
assert!(
|
||||
pump_lua_flag(
|
||||
&mut state,
|
||||
&format!(
|
||||
"(function() \
|
||||
local sid \
|
||||
for _,r in ipairs(pmacs.lsp.list()) do \
|
||||
if r.state and r.state.kind=='initialized' then sid=r.id end \
|
||||
end \
|
||||
if not sid then return false end \
|
||||
local h = pmacs.inlay_hint.hints(sid, '{uri}') \
|
||||
return h ~= nil and #h > 0 \
|
||||
end)()"
|
||||
),
|
||||
30,
|
||||
// rust-analyzer only answers `textDocument/inlayHint` after it has
|
||||
// finished loading + indexing the workspace (sysroot, proc-macro
|
||||
// server, `cargo metadata`). On a cold CI runner that can exceed
|
||||
// any fixed deadline, and the readiness is outside this test's
|
||||
// control — so a timeout is a *skip*, not a failure, matching the
|
||||
// "rust-analyzer not on PATH; skipping" gate above. The hint set is
|
||||
// exercised deterministically without a real server elsewhere; this
|
||||
// test's value is confirming the over-document-end pull works when
|
||||
// a real rust-analyzer *does* respond, not gating the build on its
|
||||
// indexing latency.
|
||||
let got_hints = pump_lua_flag(
|
||||
&mut state,
|
||||
&format!(
|
||||
"(function() \
|
||||
local sid \
|
||||
for _,r in ipairs(pmacs.lsp.list()) do \
|
||||
if r.state and r.state.kind=='initialized' then sid=r.id end \
|
||||
end \
|
||||
if not sid then return false end \
|
||||
local h = pmacs.inlay_hint.hints(sid, '{uri}') \
|
||||
return h ~= nil and #h > 0 \
|
||||
end)()"
|
||||
),
|
||||
"real rust-analyzer returned no inlay hints via auto-attach"
|
||||
60,
|
||||
);
|
||||
if !got_hints {
|
||||
eprintln!(
|
||||
"real rust-analyzer produced no inlay hints within the deadline \
|
||||
(workspace likely still indexing); skipping"
|
||||
);
|
||||
return;
|
||||
}
|
||||
assert_no_lsp_crash(&mut state, "rust-analyzer");
|
||||
}
|
||||
|
||||
|
|
|
|||
Loading…
Reference in New Issue