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Author SHA1 Message Date
gffranco 8b29d4e9b9 phase 12: tags — lexer, AST, index, anchor resolution, ws/symbol
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Vimwiki `:tag1:tag2:` syntax across the full stack. P11 resolved as
strict-vimwiki — no markdown `#tag` alias.

AST (nuwiki-core):
- `TagScope { File, Heading(usize), Standalone }` mirrors vimwiki's
  three placement-determined meanings: lines 0-1 → File; one or two
  lines below the most recent heading → Heading(idx); otherwise
  Standalone.
- `TagNode { span, tags: Vec<String>, scope }` + `BlockNode::Tag`.
- `PageMetadata.tags: Vec<String>` accumulates the file-scope tag
  names — convenience projection of the Tag blocks whose scope is
  File. New field is additive (Default derive) so existing consumers
  using `..Default::default()` keep working.
- `Visitor::visit_tag` lands with a default body and `walk_block`
  dispatches the new arm.

Lexer (`syntax/vimwiki/lexer.rs`):
- `VimwikiTokenKind::Tag(Vec<String>)` block-level token.
- `try_lex_tag` runs in the normal-line dispatcher right after heading
  recognition; demands the *whole trimmed line* match `:name:name…:`,
  with non-empty whitespace-free names between adjacent colons. Empty
  segments (`::tag::`), whitespace inside a name, or single-colon
  lines are all rejected. Doesn't fight `Term::` (definition-list
  marker) because that pattern requires text before the `::`.
- Indentation is tolerated; the span covers the trimmed run.

Parser (`syntax/vimwiki/parser.rs`):
- `ParseState` gains `headings_seen` + `last_heading_line`.
- `parse_heading` bumps both on every closed heading so the tag
  parser can detect the heading window.
- `parse_tag` reads the Tag token, computes the scope via
  `scope_for_tag(tag_line)`, eats the trailing newline, and emits the
  TagNode.
- `parse_document` post-processes each block: when a Tag with
  `scope == File` is emitted, its names are pushed (de-duped) into
  `metadata.tags`.

Renderer (`render/html.rs`):
- `render_tag` emits `<div class="tags"><span class="tag"
  id="tag-name">name</span>...</div>`. The `id` is what makes
  `[[Page#tag-name]]` jump to the rendered tag.

Semantic tokens (`semantic_tokens.rs`):
- New `TOKEN_TAG = 19` / `vimwikiTag` so editors highlight tag lines
  distinctly. `emit_block` adds the Tag arm.

Workspace index (`index.rs`):
- `IndexedPage.tags: Vec<TagInfo>` records each tag occurrence on a
  page with its span + scope.
- `WorkspaceIndex.tags_by_name: HashMap<String, Vec<TagOccurrence>>`
  is the reverse map for cross-page anchor resolution + the Phase 13
  `nuwiki.tags.search` command.
- `upsert` populates both; `remove` scrubs the reverse map and drops
  empty entries; `tags_for(name)` is the public lookup.

LSP handlers (`lib.rs`):
- `heading_range_in` falls back to tag matching when the anchor
  isn't a heading slug — so `[[Page#some-tag]]` lands on the matching
  TagNode. Heading anchors win over tag anchors when both match (the
  vimwiki precedence).
- `workspace/symbol` includes tags alongside headings, named `:tag:`
  and kinded `PROPERTY` so editor UIs can distinguish them.

Tests (20 new):
- Syntax (15 in `vimwiki_tags.rs`):
  lexer recognition + rejection of `::tag::`, whitespace-in-name,
  Term::-conflict; parser scope paths (file, heading-1-below,
  heading-2-below, standalone, no-heading, line-1 priority);
  metadata dedup; renderer HTML + escaping.
- LSP index (5 in `tags_index_and_lsp.rs`):
  per-page tag population, cross-page `tags_by_name` aggregation,
  re-upsert replaces stale tags, `remove` cleans the reverse map,
  heading-scope tag indexed but not in file metadata.

All 191 v1.0 + Phase 11 tests still pass — backward compatible.

Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>
2026-05-11 14:54:55 +00:00
gffranco 6efe154f1a phase 7: semantic tokens for syntax highlighting
CI / cargo fmt --check (push) Successful in 30s
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CI / cargo test (push) Successful in 1m20s
`textDocument/semanticTokens/full` + `/range` per SPEC §6.9. Token
type scheme settled in P7: custom `vimwiki*` types
(`vimwikiHeading`, `vimwikiBold`, `vimwikiCodeBlock`, `vimwikiKeyword`,
`vimwikiWikilink`, `vimwikiTransclusion`, …) plus `level1`..`level6`
and `centered` modifiers. Default highlight groups for these arrive
in Phase 9.

Pipeline (`semantic_tokens.rs`):

- `legend()` builds the `SemanticTokensLegend` advertised in
  `initialize` capabilities.
- `LineIndex` precomputes byte offsets per line so multi-line span
  splitting and UTF-16 conversion stay linear.
- `collect_tokens` walks the AST. Blocks that are visually distinct
  (heading, preformatted, math-block, comment) emit one token over
  their span; multi-line ones get split per line because the LSP wire
  format can't represent a token that crosses a newline. Container
  blocks (paragraph, list item, table cell, blockquote) recurse into
  inlines instead of wrapping them, so we end up with a non-overlapping
  tile of inline tokens. Headings shadow nested inlines (one heading
  token covers the line, no Bold-inside-Heading).
- `encode` produces the LSP delta-quintuple stream
  `(deltaLine, deltaStart, length, type, mods)`. UTF-16 mode converts
  byte offsets/lengths to code-unit counts on the fly (BMP + surrogate
  pairs).
- `build_data` is the entry point used by both handlers; the `range`
  variant filters tokens by overlap in the same encoding the client
  requested.

Capability declared as `SemanticTokensOptions { full = true,
range = true, legend = … }`. Both handlers reuse the document store.

P7 resolved in SPEC §11 — custom vimwiki types with rationale and a
note that Phase 9 will ship default highlight-group definitions in
`syntax/nuwiki.vim` and the Lua glue.

Tests (21 new): legend integrity, per-construct emission for every
inline + block kind, heading shadowing of inner inlines, multi-line
code/math block splitting, sort order, delta encoding (same line and
crossing lines), UTF-16 length conversion for é, range filter,
empty-doc edge case, end-to-end `build_data` parity.

Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>
2026-05-10 21:14:01 +00:00