29784c22a8
The session-long set of changes that lay the groundwork for the
Jai-literal implicit-Context-parameter refactor. Lots of accumulated
work; the new arrival is the implicit-ctx foundation (steps 1+2 of
the plan in current/CHECKPOINT-MEM.md):
Step 1 — `CAllocator :: struct {}` stateless allocator in
library/modules/allocators.sx, delegating directly to
libc_malloc/libc_free. `ConstantValue` in src/ir/inst.zig gains a
`func_ref: FuncId` leaf so nested aggregates can carry function
pointers (the inline Allocator value's fn-ptr fields). Switch
sites updated in emit_llvm.zig, print.zig, interp.zig.
Step 2 — `emitDefaultContextGlobal` in src/ir/lower.zig synthesises
a static `__sx_default_context` global with a nested-aggregate
init_val pointing at the CAllocator → Allocator thunks. The
second-pass `initVtableGlobals` in emit_llvm.zig is generalised
to handle `.aggregate` init_vals (re-emits after func_map is
populated so func_ref leaves resolve to real symbols).
Also folded in from earlier work this session:
- Phase 1.1: `xx value` heap-copy in `buildProtocolValue` routes
through `context.allocator` via the new `allocViaContext` helper.
- interp.zig: `marshalForeignArg` double-offset bug fixed —
`heapSlice` already adds `hp.offset` to the slice ptr, so the
extra `+ hp.offset` was scribbling memcpy/memset into adjacent
heap state, corrupting `heap.items[0]`. Symptom: `build_format`
at comptime produced zero bytes, all `print` calls failed.
- Lazy lowering: `lazyLowerFunction` now declares foreign-body
functions as extern stubs in the local (comptime) module so
cross-module foreign calls resolve.
- Allocator API: all stdlib allocators on one-line `init() -> *T`
(CAllocator/GPA: libc-backed; Arena/TrackingAllocator: parent-
backed; BufAlloc: embeds state at head of user buffer).
- issues 0038 (transitive #import), 0039 (chess + stdlib migration
fallout), 0040 (generic struct method dot-dispatch), 0041
(pointer types as type-arg), 0042 (alias name resolution) — all
fixed; regression tests in examples/.
- Diagnostic: `emitError` now embeds the lowering's
`current_source_file` and enclosing function in the literal
message; SX_TRACE_UNRESOLVED=1 dumps a Zig stack trace at the
emit site so misattributed spans can't hide where the failure
is.
- tools/verify-step.sh (all-platforms gate) and tools/scratch.sh
(interp/codegen parity tester) added.
Test suite: 152 example tests pass; chess builds + screenshots on
macOS / iOS sim / Android.
81 lines
1.7 KiB
Plaintext
81 lines
1.7 KiB
Plaintext
// HTTP server example (macOS only)
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#import "modules/std.sx";
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#import "modules/socket.sx";
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// --- Logger ---
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Logger :: struct {
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prefix: string;
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count: s64;
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}
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log :: (logger: *Logger, msg: string) {
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logger.count += 1;
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print("[{}] {}\n", logger.prefix, msg);
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}
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main :: () -> s32 {
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PORT :: 8080;
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fd := socket(AF_INET, SOCK_STREAM, 0);
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if fd < 0 {
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print("error: socket()\n");
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return 1;
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}
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opt : s32 = 1;
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setsockopt(fd, SOL_SOCKET, SO_REUSEADDR, @opt, 4);
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addr := SockAddr.{ sin_len = 16, sin_family = 2, sin_port = htons(PORT) };
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if bind(fd, @addr, 16) < 0 {
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print("error: bind()\n");
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return 1;
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}
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if listen(fd, 10) < 0 {
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print("error: listen()\n");
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return 1;
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}
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print("listening on http://localhost:{}\n", PORT);
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arena := Arena.init(context.allocator, 65536);
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logger := Logger.{ prefix = "http", count = 0 };
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while true {
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client := accept(fd, null, null);
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if client < 0 { continue; }
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push Context.{ allocator = xx arena, data = xx @logger } {
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handle(client);
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}
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arena.reset();
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close(client);
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}
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arena.deinit();
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close(fd);
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0;
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}
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handle :: (client: s32) {
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// Read request
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buf : [4096]u8 = ---;
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read(client, buf, buf.len);
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body :: "<html><body><h1>Hello from sx!</h1></body></html>";
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response :: format("HTTP/1.1 200 OK\r
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Content-Type: text/html\r
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Connection: close\r
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Content-Length: {}\r
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\r\n{}", body.len, body);
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write(client, response, response.len);
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logger : *Logger = xx context.data;
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log(logger, format("served request #{}", logger.count + 1));
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} |