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comptime VM arc: abi(.compiler) ABI, out as sx fn, VM-native diagnostics, BuildConfig threaded

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Lands the full VM/compiler-API arc on branch reify (701/0 both gates):
- abi(.compiler) ABI replaces abi(.zig) extern compiler + the fake
  #library "compiler"; bodiless decl = compiler-API surface, bodied =
  user compiler-domain fn (lowered for VM eval, emit-skipped).
- out is a plain sx fn (libc write) — the out builtin deleted; the VM
  handles it via host-FFI. trace_resolve + interp_print_frames ported.
- 4B VM-native diagnostics: 1179/1180 render proper comptime type
  construction failed: under strict.
- S5a: build_options/set_post_link_callback on abi(.compiler) with
  BuildConfig threaded into the VM (green intermediate).
- 0522 fixed (describe(args: []Type)); regression 0638.

Strict deletion-gate down to 4 compiler_call bails (1609/1614/1615/1616)
+ 1654 (legitimate unresolvable-symbol diagnostic).
This commit is contained in:
agra
2026-06-19 07:04:10 +03:00
parent fdc4ee2331
commit 2060373c16
80 changed files with 12684 additions and 11922 deletions
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19
src/parser.zig
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@@ -1998,6 +1998,17 @@ pub const Parser = struct {
try self.expect(.semicolon);
const stmts = try self.allocator.alloc(*Node, 0);
break :blk try self.createNode(semi_start, .{ .block = .{ .stmts = stmts, .produces_value = false } });
} else if (abi == .compiler and self.current.tag == .semicolon) blk: {
// A bodiless `abi(.compiler)` decl: the compiler-API surface
// (`intern`/`find_type`/`build_options`/…). It has no sx body — the
// Zig/VM handler IS the implementation — so synthesize the empty-block
// placeholder, exactly like an `extern` import. (A BODIED
// `abi(.compiler)` function — e.g. a post-link callback — keeps its
// `{ … }` and falls through to `parseBlock` below.)
const semi_start = self.current.loc.start;
self.advance();
const stmts = try self.allocator.alloc(*Node, 0);
break :blk try self.createNode(semi_start, .{ .block = .{ .stmts = stmts, .produces_value = false } });
} else if (self.current.tag == .hash_builtin) blk: {
const bi_start = self.current.loc.start;
self.advance();
@@ -3832,16 +3843,16 @@ pub const Parser = struct {
try self.expect(.l_paren);
try self.expect(.dot);
if (self.current.tag != .identifier)
return self.fail("expected ABI name ('.c', '.zig', or '.pure') after '.'");
return self.fail("expected ABI name ('.c', '.compiler', or '.pure') after '.'");
const abi_name = self.tokenSlice(self.current);
const abi: ast.ABI = if (std.mem.eql(u8, abi_name, "c"))
.c
else if (std.mem.eql(u8, abi_name, "zig"))
.zig
else if (std.mem.eql(u8, abi_name, "compiler"))
.compiler
else if (std.mem.eql(u8, abi_name, "pure"))
.pure
else
return self.fail("unknown ABI (expected '.c', '.zig', or '.pure')");
return self.fail("unknown ABI (expected '.c', '.compiler', or '.pure')");
self.advance();
try self.expect(.r_paren);
return abi;