5df4ac61a7
Re-land the value-const analog of the E1-E4 type work, reconciled onto the
current source-keyed resolver and hardened. A same-name VALUE const declared in
multiple flat-imported modules is now resolved per declaring source, not the
global last-wins `module_const_map`.
- imports.zig: `isPerSourceDecl` retains every non-function `const_decl`
per-source (value consts + type aliases), so each same-name author reaches
registration as a distinct author of its own module. Functions and var_decls
keep first-wins.
- lower.zig:
* `selectModuleConst` over `module_consts_by_source` — own-wins; exactly one
flat-visible resolves; >=2 flat-visible bare -> loud ambiguous (consistent
with the 0755 type / 0724 fn / 0782 generic ambiguities). Rewires every
consumer: `comptimeIntNamed`, the runtime-id read, the global-init read,
and the float-name path (`lookupFloatName` / `nameIsFloatTyped`).
* `SourceConstCtx` + `foldSourceConstInt`/`Float` + `sourceConstIsFloatTyped`
fold a selected const's RHS with nested same-name leaves re-selected in
their own author source, so VALUE and array-DIMENSION results are coherent.
* `pinConstAuthorSource` pins each fold level to the SELECTED const's author
(F1), including multi-level cross-module chains.
* cycle guard keyed on (name, author-source), not name alone (F3), so
same-name nested consts across modules do not trip a false cycle.
* `emitModuleConst` takes the author source and pins while folding/lowering.
Registration-time struct/inline-type field dimensions route through the now
source-aware stateful reader; the type-alias dimension path resolves each
alias against its own author's consts.
- program_index.zig: expose `isFloatConstType` / `isCountableConstType` for the
source-aware folds.
examples: 0786 own-wins, 0787 ambiguous (exit 1), 0788 expr-chain value+dim
coherent, 0789 leaf-author-pin, 0790 cross-module cycle-guard (F3), 0791
multi-level cross-module chain, 0792 struct-field registration-time dim.
Single-author corpus byte-identical (524 prior markers green); 531 total.
17 lines
832 B
Plaintext
17 lines
832 B
Plaintext
// issue 0105 / F3 — the const cycle guard must key on (name, AUTHOR-source), not
|
|
// name alone. `a.sx` declares `M :: 1` and `K :: M + 1` (= 2). `b.sx` flat-imports
|
|
// `a.sx` and declares a DIFFERENT same-name `M :: K + 1` (= 3) — so the SAME name
|
|
// `M` appears at two levels of one fold chain, in two different modules
|
|
// (b's `M` → a's `K` → a's `M`). A name-only cycle guard sees `M` twice and trips
|
|
// a FALSE cycle, folding b's `M` to null → the array dimension `[M]u8` becomes a
|
|
// non-const error. Keyed on (name, source) the two `M`s are distinct, so the
|
|
// chain folds: `m=3 len=3`, coherent for the value read and the dimension.
|
|
#import "modules/std.sx";
|
|
#import "0790-modules-same-name-const-cross-cycle-guard/b.sx";
|
|
|
|
main :: () -> s32 {
|
|
arr : [M]u8 = ---;
|
|
print("m={} len={}\n", M, arr.len);
|
|
0
|
|
}
|