1d17b0abcf
cstring is ONE pointer to a null-terminated u8 buffer, C's char*: thin (8 bytes, no length; cstring_len walks to the terminator), crossing #foreign boundaries verbatim in both directions, with ?cstring as the nullable case lowering to the same bare pointer (null = absent). Conversion discipline mirrors Odin: a string LITERAL coerces implicitly (its bytes are terminated constants); any other string is rejected with a diagnostic naming to_cstring (it may be an unterminated view); and cstring never coerces to string implicitly — from_cstring(c) is the explicit zero-copy view, pricing the strlen. Plumbing: TypeId/TypeInfo builtin slot 18 (first_user 19), name classifiers, size/align/name tables, LLVM ptr lowering, the ?T pointer niche, the xx pointer ladder, the literal-gated coercion plan (isConstString + data_ptr), and the reserved-spelling set. std gains cstring_len/from_cstring/to_cstring (fmt.sx, re-exported); the old cstring(size) allocator helper is renamed alloc_string everywhere; getenv migrates to (name: cstring) -> ?cstring as the canonical user and env() drops its manual strlen/memcpy. Pinned: examples/1222 (FFI both directions, literal coercion, ?cstring null paths, round trip) and examples/1173 (both coercion diagnostics); FAIL pre-feature. The alloc_string rename + getenv signature shift the .ir snapshots — regenerated. zig build test 426/426; run_examples 604/604. Spec: reserved spelling + cstring section + C-interop rows.
100 lines
3.4 KiB
Plaintext
100 lines
3.4 KiB
Plaintext
// The prelude facade: every name here is a RE-EXPORT. The implementations
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// live in the part-files (std/core.sx — compiler-coupled primitives,
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// std/fmt.sx — formatting + string helpers, std/list.sx — List); each
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// alias below is an ordinary OWN declaration of this file, so a flat
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// `#import "modules/std.sx"` sees the whole prelude bare, one hop —
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// visibility never chains, aliases are the re-export mechanism. The
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// part-file namespaces (`core` / `fmt` / `list`) and the namespace tail at
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// the bottom are carried to flat importers the same one level.
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core :: #import "modules/std/core.sx";
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fmt :: #import "modules/std/fmt.sx";
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list :: #import "modules/std/list.sx";
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// --- Compiler-resolved types ---
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// (`string` has no alias here: it is a reserved type name — its #builtin
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// declaration in core.sx resolves program-wide and cannot be re-bound.)
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Context :: core.Context;
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Allocator :: core.Allocator;
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Into :: core.Into;
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Source_Location :: core.Source_Location;
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// --- Type system & reflection builtins ---
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Vector :: core.Vector;
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size_of :: core.size_of;
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align_of :: core.align_of;
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type_of :: core.type_of;
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type_name :: core.type_name;
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type_is_unsigned :: core.type_is_unsigned;
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field_count :: core.field_count;
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field_name :: core.field_name;
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field_value :: core.field_value;
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field_value_int :: core.field_value_int;
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field_index :: core.field_index;
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is_flags :: core.is_flags;
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error_tag_name :: core.error_tag_name;
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// --- Output & libc escape hatch ---
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out :: core.out;
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libc_malloc :: core.libc_malloc;
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libc_free :: core.libc_free;
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memcpy :: core.memcpy;
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memset :: core.memset;
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// --- Formatting ---
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print :: fmt.print;
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format :: fmt.format;
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any_to_string :: fmt.any_to_string;
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int_to_string :: fmt.int_to_string;
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uint_to_string :: fmt.uint_to_string;
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int_to_hex_string :: fmt.int_to_hex_string;
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float_to_string :: fmt.float_to_string;
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bool_to_string :: fmt.bool_to_string;
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struct_to_string :: fmt.struct_to_string;
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enum_to_string :: fmt.enum_to_string;
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flags_to_string :: fmt.flags_to_string;
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vector_to_string :: fmt.vector_to_string;
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array_to_string :: fmt.array_to_string;
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slice_to_string :: fmt.slice_to_string;
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pointer_to_string :: fmt.pointer_to_string;
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optional_to_string :: fmt.optional_to_string;
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// --- String ops & allocation helpers ---
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concat :: fmt.concat;
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substr :: fmt.substr;
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path_join :: fmt.path_join;
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alloc_string :: fmt.alloc_string;
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cstring_len :: fmt.cstring_len;
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from_cstring :: fmt.from_cstring;
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to_cstring :: fmt.to_cstring;
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alloc_slice :: fmt.alloc_slice;
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// fmt internals, re-exported only because they were always part of the
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// flat prelude surface.
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build_format :: fmt.build_format;
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hex_group :: fmt.hex_group;
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decompose_u16x4 :: fmt.decompose_u16x4;
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// --- Containers ---
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List :: list.List;
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// --- The stdlib namespace tail: flat-importing std.sx carries these ---
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mem :: #import "modules/std/mem.sx";
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fs :: #import "modules/std/fs.sx";
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process :: #import "modules/std/process.sx";
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socket :: #import "modules/std/socket.sx";
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json :: #import "modules/std/json.sx";
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xml :: #import "modules/std/xml.sx";
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cli :: #import "modules/std/cli.sx";
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hash :: #import "modules/std/hash.sx";
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log :: #import "modules/std/log.sx";
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test :: #import "modules/std/test.sx";
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