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Adds the bracket postfix branch:
a[0] / a[i] / a[i+1] / m["key"] → (list :index OBJ IDX)
a[:] / a[1:] / a[:2] / a[1:2] / a[1:2:3] → (list :slice OBJ LOW HIGH MAX)
LOW/HIGH/MAX are AST nodes or nil for omitted indices. The 4th MAX
slot is only populated by the three-index full-slice form.
Two new lib/guest/ast.sx kit gaps surfaced (logged in plans/go-on-sx.md
Blockers):
* No :index node — universal across guests with arrays/maps.
* No :slice node — Python/Rust/Swift/JS/Ruby all need at minimum the
two-index form. Go's three-index variant is more specialised but
fits in the same shape with an optional fourth slot.
Parser is permissive on a[1::3] (strict Go rejects, but the type phase
can enforce the grammar; lexer/parser stays loose).
Chained (a[0][1]) and mixed-with-selector (a[0].field) cases work via
the existing left-associative postfix loop.
parse 61/61, total 190/190.
Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>
16 lines
316 B
Markdown
16 lines
316 B
Markdown
# Go-on-SX Scoreboard
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**Total: 190 / 190 tests passing**
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| | Suite | Pass | Total |
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| ✅ | lex | 129 | 129 |
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| ✅ | parse | 61 | 61 |
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| ⬜ | types | 0 | 0 |
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| ⬜ | eval | 0 | 0 |
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| ⬜ | runtime | 0 | 0 |
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| ⬜ | stdlib | 0 | 0 |
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| ⬜ | e2e | 0 | 0 |
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Generated by `lib/go/conformance.sh`.
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