spec(v1.0): rename @table → @dataset, add @proto, expand reserved names#42
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Implements the three one-time spec changes from the protowire v1.0 freeze line (protowire/STABILITY.md): - @table directive renamed to @dataset (draft §3.4.4). Same semantics; v1 reserves @table for a future storage-definition meaning. Hard cutover — no alias period. - @proto directive added (draft §3.4.5). Four body shapes distinguished lexically: anonymous { ... }, named pkg.Type { ... }, source """...""", descriptor b"...". Descriptor form is mandatory per spec; the other three are QoI (all four supported). Anonymous @proto is consumed one-shot by the next typed-binding directive. - Reserved directive name list expanded from 5 to 13 (draft §3.4.6). Parser + FastDecoder reject @table, @Datasource, @view, @procedure, @function, @permissions as spec-reserved. Public API rename surface: Ast.TableDirective → Ast.DatasetDirective Ast.TableRow → Ast.DatasetRow TableReader → DatasetReader Document.tables() → Document.datasets() Result.tables() → Result.datasets() Document.protos() / Result.protos() (new) Ast.ProtoDirective + Ast.ProtoShape (new) TokenKind.AT_TABLE → AT_DATASET; + AT_PROTO (new) SchemaValidator.FUTURE_RESERVED_DIRECTIVES (new) Source files renamed: TableReader.java → DatasetReader.java TableReaderTest.java → DatasetReaderTest.java TableParserTest.java → DatasetParserTest.java New: ProtoDirectiveTest.java with 13 cases covering all four shapes, anonymous binding, multi-@proto, nested-brace bodies, reserved-name rejection, @type coexistence, ProtoShape enum. @dataset's row message type is now optional in the AST (binding to an anonymous @proto). Lexer.repositionTo(int) added so the parser can skip past an @proto brace-body whose interior is protobuf source rather than PXF. 103 tests, 0 failures.
This was referenced May 13, 2026
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Summary
Implements the three one-time spec changes from the protowire v1.0 freeze line (STABILITY.md):
@table→@dataset(draft §3.4.4). Hard cutover, no alias period.@protodirective added (draft §3.4.5). Four body shapes lexically distinguished: anonymous, named, source, descriptor. Descriptor form is the MUST-support shape; this port supports all four.@table,@datasource,@view,@procedure,@function,@permissions.Public API rename surface
Ast.TableDirectiveAst.DatasetDirectiveAst.TableRowAst.DatasetRowTableReaderDatasetReaderDocument.tables()Document.datasets()Result.tables()Result.datasets()TokenKind.AT_TABLEAT_DATASETAst.ProtoDirective+Ast.ProtoShape(new)Document.protos()+Result.protos()(new)TokenKind.AT_PROTO(new)SchemaValidator.FUTURE_RESERVED_DIRECTIVES(new)Source files
TableReader.java,TableReaderTest.java,TableParserTest.javarenamed to theirDataset*equivalents.@dataset's row message type is now optional in the AST — binding to an anonymous@protoper draft §3.4.4 Anonymous binding.Lexer.repositionTo(int)added so the parser can skip past an@protobrace-body whose interior is protobuf source rather than PXF.Test plan
Companion PRs: