Orkuncakilkaya
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An action names one row of a ludic.base Table<T> by its handle, in a field marked @Target, and `reducer Deer in Herd.deer on Spook(r: mut Row<Deer>, n: Noise, a: Spook)` runs once, for that row alone (the table may sit down a path, S.w.tab). The drain resolves the handle (tb_row) and hands the reducer a Row<T> - new in ludic.base: tb, row, h, rec - that the queue keeps, one per row reducer, filled in place, so a targeted action allocates nothing; a stale handle runs nothing, and LUDIC_ACTIONS_LOG=1 prints a line for it (@alloc_ok). Row reducers order among an action's by their state's name, then the table's path. Checked at compile time (actions_rows.ludic): the row reaches r.rec and r.h only - r.tb / r.row refused, the view never assigned, stored, copied or handed on except to a @RowVerb (a function of the record's own module taking Row<T> first; any other function taking a row is refused); a field marked @Column (a table column mirrors it) is not written through r.rec; only the module owning the state declares a row reducer; one @Target, an int, per action; the states between the row and the action are read. `mut` is allowed on a Row<T> parameter. ludic schema's code section gains row_reducers (record, table, state, action, target, predicted, net, module, at) and row_verbs (name, record, module, at), and every action its target; row reducers are left out of `reducers`. ludic deps and ludic-lsp name a row reducer `reducer Deer in Herd.deer on Spook`. vocab: @Target, @Column, @RowVerb; docs/language pages; LANGUAGE.md "A reducer on a row"; examples actions/rows and ten rejects; test.ludic feat, reject and schema cases (not run); changes/row-reducers.md. Reseeded; bootstrap-cfree fixpoint holds (307497 lines); Maroon Lake's `ludic build --check` is clean against this tree. Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
10 lines
577 B
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10 lines
577 B
Text
# ludic.base/ecs_row.ludic - a Row<T>: one row of a Table<T>, as the action drain hands it to a row
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# reducer (`reducer T in S.table on A(r: mut Row<T>, a: A)`). The drain keeps one per reducer and
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# fills it in place, so a targeted action allocates nothing. A row reducer reads `r.rec` and `r.h`;
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# `r.tb` and `r.row` are for the @RowVerbs of T's own module, which keep the columns and indexes.
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export property Row<T> {
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tb: Table<T>
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row: int = -1 # the row the handle named when the drain resolved it
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h: int = -1 # the handle the action carried
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rec: T
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}
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