59f0aa7716
allocators/fs/process/socket/log/trace/test move under modules/std/ (allocators.sx becomes std/mem.sx; the Allocator protocol moves into the std.sx prelude, impls stay in mem.sx). New std/xml.sx holds xml_escape as xml.escape. std.sx gains the carried namespace tail — flat-importing std.sx now also provides mem./xml./log. — with the remaining modules (fs/process/socket/json/cli/hash/test) deferred from the tail until the global last-wins maps are fully own-wins (pulling them into every closure collides bare names corpus-wide; they stay direct imports: modules/std/fs.sx etc.). log.sx's internal emit renamed log_emit (it clobbered consumer fns named emit program-wide). bundle.sx uses xml.escape via the carried alias. Consumer import paths swept mechanically; .ir snapshots recaptured for the larger std closure. m3te + game build unchanged.
37 lines
1.3 KiB
Plaintext
37 lines
1.3 KiB
Plaintext
// Error return-trace formatting (ERR step E3.3). `library/modules/std/trace.sx`
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// reads the trace buffer (E3.1, populated by E3.2's raise/try push wiring) and
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// renders it. `trace.print_current()` writes the trace to stderr; the catch
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// handler sees the full chain because the absorption clear fires at handler
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// EXIT, not entry. Frame locations are placeholders until DWARF (ERR E3.0)
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// resolves PCs to file:line; the count + ordering are already meaningful.
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//
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// Note: the trace goes to stderr. The test runner merges stderr+stdout, so the
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// snapshot shows the trace lines interleaved with the `print` (stdout) lines.
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#import "modules/std.sx";
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trace :: #import "modules/std/trace.sx";
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// Buffer length probe (the runtime symbol; public read API is the trace module).
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sx_trace_len :: () -> u32 #foreign;
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E :: error { BadInput, Overflow }
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leaf :: (n: s32) -> !E {
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if n < 0 { raise error.BadInput; } // pushes frame 0
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return;
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}
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mid :: (n: s32) -> !E {
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try leaf(n); // propagation pushes frame 1
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return;
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}
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main :: () -> s32 {
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mid(-1) catch (e) {
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print("[stdout] caught {}\n", e); // tag name via the always-linked table
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trace.print_current(); // [stderr] the 2-frame trace
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};
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print("[stdout] recovered; trace buffer now empty (len {})\n", sx_trace_len());
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return 0;
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}
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