efc09699e8
Two remaining siblings in F0.4's comptime-int path.
1. Type-returning function with a value param used as a TYPE annotation
(`b : Make(N, s64)` where `Make :: ($K: u32, $T: Type) -> Type`):
- `isValueParamPosition` (semantic_diagnostics) now also skips a value
param of a `fn_ast_map` type-returning function, so `N` is not walked
as the type name "N" ("unknown type 'N'").
- `resolveParameterizedWithBindings` routes a type-returning-function
name to `instantiateTypeFunction` (the `.call` path already did).
- `instantiateTypeFunction` resolves a general return-type expression
(`return [K]T`) with bindings active — not just struct/union returns.
`Make(N, s64)`, `Make(M + 1, s64)`, `Make(3, s64)` all resolve to one
`[3]s64`.
2. Oversized dim/lane fold panicked the compiler (0087): an array dim /
Vector lane folded to a valid i64 (5e9) then narrowed to u32 with an
unchecked `@intCast`. New single gate `program_index.foldDimU32` folds
via `evalConstIntExpr` then range-checks `[min, maxInt(u32)]`; the three
narrowing sites (resolveArrayLen stateful + stateless, resolveVectorLane)
all route through it and emit a clean diagnostic + halt instead of
panicking. Value-param args stay i64 until used as a dim/lane, where the
same gate checks them.
Regressions: examples/0208 (value-param type function), examples/1130
(oversized array dim clean halt), examples/1503 (oversized Vector lane
clean halt). Marks issue 0087 RESOLVED.
Gate: zig build, zig build test, bash tests/run_examples.sh — 398 passed,
0 failed, 0 timed out.
33 lines
1.4 KiB
Plaintext
33 lines
1.4 KiB
Plaintext
// A type-RETURNING function with a value parameter (`$K: u32`) used as a TYPE
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// annotation: `b : Make(N, s64)` where `Make :: ($K, $T) -> Type { return [K]T; }`.
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// A named-const value arg (`Make(N, s64)`), a const-expression value arg
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// (`Make(M + 1, s64)`), and the literal form (`Make(3, s64)`) all instantiate to
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// the SAME type — the array copy `b : Make(3, s64) = a` type-checks only because
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// the three spellings name one `[3]s64`.
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//
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// Regression (issue 0083 / F0.4 attempt 6): the unknown-type checker walked the
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// value-param position as a type name ("unknown type 'N'"), and the
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// parameterized-type-annotation path never routed to `instantiateTypeFunction`,
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// nor did that binder resolve a non-struct/union return shape (`return [K]T`).
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// The value arg now folds through the shared const-int evaluator and the type
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// function resolves its general return-type expression with bindings active.
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#import "modules/std.sx";
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N :: 3;
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M :: 2;
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Make :: ($K: u32, $T: Type) -> Type { return [K]T; }
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main :: () {
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a : Make(N, s64) = ---; // named-const value param
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a[0] = 10; a[1] = 20; a[2] = 30;
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print("named: len={} a0={} a2={}\n", a.len, a[0], a[2]);
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e : Make(M + 1, s64) = ---; // const-expr value param (M + 1 == 3)
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e[0] = 1; e[2] = 9;
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print("expr: len={} e2={}\n", e.len, e[2]);
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b : Make(3, s64) = a; // same instantiation → array copy type-checks
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print("copy: len={} b2={}\n", b.len, b[2]);
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}
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