claude@clouddev1
857ee753f2
ADR-0020 amends ADR-0001 with a two-phase parse: a lexer
producing a span-tagged token stream, then chumsky over
&[Token]. Single source of truth for keywords and punct via
a define_keywords!/define_punct! macro pattern. Parser
contract committed for I3 (queryable expected-token-set)
and I4 (lexer always succeeds, Error tokens for invalid
input). Includes an honest history note: the no-lexer shape
in dsl/parser.rs arose incrementally without ADR-level
deliberation against the known H1a/I3/I4 requirements; this
ADR corrects that.
ADR-0021 builds on ADR-0020 to close the H1a gap: a
per-command UsageEntry registry keyed off entry-keyword,
with parse errors rendered as caret + structural error +
matching usage template(s). Multi-entry families (add,
drop, show) render together. New catalog sections under
parse.usage.* (per-command grammar) and parse.token.*
(single-token vocabulary). Zero-prefix case ("frobulate
Customers") falls back to an "available commands:" framing.
Anchor-phrase compliance preserved.
Architecture Decision Records
This directory contains the project's ADRs, recorded per ADR-0000.
Index
- ADR-0000 — Record architecture decisions
- ADR-0001 — Language and TUI framework
- ADR-0002 — Database engine
- ADR-0003 — Input modes and command dispatch
- ADR-0004 — Project file format
- ADR-0005 — Column type vocabulary
- ADR-0006 — Undo snapshots and replay log
- ADR-0007 — Sharing and export
- ADR-0008 — Testing approach
- ADR-0009 — DSL command syntax conventions
- ADR-0010 — Database access via a dedicated worker thread
- ADR-0011 — Foreign-key column type compatibility
- ADR-0012 — Internal metadata for user-facing column types
- ADR-0013 — Relationships, naming, and the rebuild-table strategy
- ADR-0014 — Data operations, value literals, and the auto-show pattern
- ADR-0015 — Project storage runtime
- ADR-0016 — Pretty table rendering for data and structure views
- ADR-0017 — Column type-change compatibility
- ADR-0018 — Auto-fill contracts for
serialandshortidcolumns - ADR-0019 — Friendly error layer (H1) and i18n message catalog
- ADR-0020 — Tokenization layer for the DSL parser
- ADR-0021 — Parser-as-source-of-truth for H1a (per-command usage in parse errors)