writeonce/tests/corpus/run/float-json-storage/fixture.wo
shoney.arickathil 771180fd28 feat: iterations 19 + 17 — Float/Bytes scalars (.wob v5), library kind + internal/
- Float full stack: literals (fraction/exponent; `0..10` still a range), f64
  opcodes 34-41, @table column, WAL bit-exact replay, json fractions in and
  shortest-round-trip out. IEEE-quiet — FDIV never traps where DIV does.
- Bytes: a wo_str with its own class id, so alloc/free/copy are shared but no
  Text builtin accepts one; len/at/slice/eq/concat, base64 both ways, json
  boundary as base64; TEXT_COPY preserves the kind.
- No implicit Int/Float mixing (WO-E201 in the typechecker, not the emitter,
  which picks the opcode from one side and would misread the other).
- One IEEE deviation: float_cmp total order (NaN last, -0.0 == +0.0) for
  indexes and order-by, keys canonicalized to match. `?Float` nil is a
  reserved quiet NaN — the zero word is +0.0, WO_NIL_SCALAR's bits are -2.0.
- Renderer prefers fixed over exponential in 1e-6..1e21: pure shortest makes
  a price of 900.0 read `9e+02`. One renderer for interp/json/float_to_text.
- Fixed en route: lexer double-counted the leading digit; is_scalar_shaped
  took Float/Bytes as Int-shaped; Bytes ownership needed a shared heap-scalar
  predicate or temps never dropped; order-by bit-compared negatives backwards.
- Iteration 17: `kind = "library"` (absent = program; bad value = WO-E109),
  entry-less check mode retiring the `--emit` workaround, Go's `internal/` as
  WO-E108 at the consumer's `use`. Driver-only; VM/.wob/GC untouched.
- Framework reorg: internal/{parse,serve}.wo; http/form.wo split out to keep
  media_type/form_values public (parse.wo had grown public surface).
- Docs: link audit (97 -> 88 broken, conflict markers resolved, 2 duplicate
  stories removed), 00-code-review verified 26/27, iterations re-sequenced.
- Also carries the pre-staged pub(read)/using/#if work from the index.
- Gates: corpus 103/0, test_wal 156/0, web-app 26/0, oop-accept ALL MET.

Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com>
2026-08-20 19:24:15 +02:00

65 lines
2.1 KiB
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-- Iteration 19, the forcing function: `{"price": 9.99}` used to fail the
-- whole checked decode because the language had no Float. Now a Float field
-- decodes fractions and exponents, encodes shortest-round-trip, and an Int
-- field's strictness is UNCHANGED (a fraction there is still malformed).
-- A ?Float carries its own nil sentinel, and a Bytes field crosses the JSON
-- boundary as base64.
use json
class Item {
name: Text
price: Float
discount: ?Float
blob: Bytes
}
class Counted {
n: Int
}
fn main() -> Int {
-- encode: shortest form, a nil ?Float is null, Bytes is base64
print(json.encode(Item {
name: "mug",
price: 9.99,
discount: nil,
blob: bytes_of_text("hi")
}))
-- decode a fraction into a Float field: the hole this iteration closes
let a = json.decode("{\"name\":\"mug\",\"price\":9.99,\"discount\":0.25,\"blob\":\"aGk=\"}") as Item
if a != nil {
print("${a.price}")
let d = a.discount
if d != nil { print("${d}") }
print(text_of_bytes(a.blob))
print(json.encode(a))
}
-- exponent and integer-shaped forms both land in a Float field
let b = json.decode("{\"name\":\"x\",\"price\":2.5e-3,\"discount\":null,\"blob\":\"\"}") as Item
if b != nil {
print("${b.price} ${bytes_len(b.blob)}")
-- a JSON null in a ?Float field must read back as nil, which is the whole
-- job of the reserved-NaN sentinel: the zero word would be +0.0
let bd = b.discount
if bd == nil { print("null discount read back as nil") }
}
let c = json.decode("{\"name\":\"x\",\"price\":42,\"discount\":null,\"blob\":\"\"}") as Item
if c != nil { print("${c.price}") }
-- Int strictness is untouched: a fraction in an Int field is still
-- malformed, so the checked decode fails whole
let bad = json.decode("{\"n\":3.7}") as Counted
if bad == nil { print("int fraction still rejected") }
-- a non-finite Float has no JSON literal, so it encodes as null rather
-- than as invalid JSON
print(json.encode(Item {
name: "inf",
price: 1.0 / 0.0,
discount: 0.0 / 0.0,
blob: bytes_of_text("")
}))
return 0
}