424 lines
12 KiB
Plaintext
424 lines
12 KiB
Plaintext
// Expect retcode = 0
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// 属性注册表与属性节点（移植自 stage1/spl_attr.c）。注册表是数据：内置属性
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// 在 register_builtins 里登记，查找按 (ns, name)。节点记录命中信息 + 实参。
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// 新增属性只加注册项，不改 sema 逻辑（对应 SPL.md 的 @/# 扩展点）。
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type .{ .Error } = @import("utils/error.spl");
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type .{ .Vec } = @import("utils/vec.spl");
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type .{ .ByteView } = @import("utils/byte_view.spl");
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type .{ .ByteBuffer } = @import("utils/byte_buffer.spl");
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type .{ .append_usize, .append_i64 } = @import("utils/fmt.spl");
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type AttrStage = enum {
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Sema,
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Layout,
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Ir,
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Opt,
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Backend,
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}
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type AttrTarget = enum {
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Decl,
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Type,
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Expr,
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Stmt,
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}
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type AttrDemand = enum {
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Optional,
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Required,
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}
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type AttrInfo = struct {
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ns: ByteView,
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name: ByteView,
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stage: AttrStage,
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target: AttrTarget,
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demand: AttrDemand,
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min_args: i32,
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max_args: i32, // -1 = variadic
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}
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type AttrArgKind = enum {
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Int,
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Str,
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Def,
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Type,
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}
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type AttrArg = enum {
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Int: i64,
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Str: ByteView,
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Def: usize,
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Type: usize,
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}
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type AttrNode = struct {
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info_index: usize, // 注册表下标；0 = 无
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args: Vec, // AttrArg
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consumed_mask: u32,
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}
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type Attr = @self;
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table: Vec, // AttrNode
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registry: Vec, // AttrInfo
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type AttrResult = enum {
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Ok: Attr,
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Err: Error,
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}
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fn empty_info(): AttrInfo {
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ret AttrInfo {
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.ns = ByteView.empty(),
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.name = ByteView.empty(),
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.stage = .Sema,
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.target = .Decl,
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.demand = .Optional,
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.min_args = 0,
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.max_args = 0,
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};
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}
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fn new_node(): AttrNode {
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ret AttrNode {
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.info_index = 0,
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.args = Vec.blank(@sizeof(AttrArg), @alignof(AttrArg)),
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.consumed_mask = 0,
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};
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}
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fn new(): AttrResult {
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var at = Attr {
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.table = Vec.blank(@sizeof(AttrNode), @alignof(AttrNode)),
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.registry = Vec.blank(@sizeof(AttrInfo), @alignof(AttrInfo)),
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};
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var sentinel = new_node();
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match Vec.push(&at.table, &sentinel as *u8) {
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.Ok => {},
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.Err(error) => {
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Vec.drop(&at.table);
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Vec.drop(&at.registry);
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ret .Err(error);
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},
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}
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var reg_sentinel = empty_info();
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match Vec.push(&at.registry, ®_sentinel as *u8) {
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.Ok => {},
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.Err(error) => {
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Vec.drop(&at.table);
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Vec.drop(&at.registry);
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ret .Err(error);
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},
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}
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register_builtins(&at);
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ret .Ok(at);
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}
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fn drop(self: *Attr) {
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var i: usize = 1;
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while i < self.table.len {
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var a = node(self, i);
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if a != null {
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Vec.drop(&a.args);
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}
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i = i + 1;
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}
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Vec.drop(&self.table);
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Vec.drop(&self.registry);
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}
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fn node(self: *Attr, id: usize): *AttrNode {
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if id == 0 || id >= self.table.len { ret null; }
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ret (self.table.data as *AttrNode) + id;
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}
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fn info_at(self: *Attr, index: usize): *AttrInfo {
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if index == 0 || index >= self.registry.len { ret null; }
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match Vec.get(&self.registry, index) {
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.Ok(ptr) => { ret ptr as *AttrInfo; },
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.Err(error) => { ret null; },
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}
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ret null;
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}
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fn node_info(self: *Attr, id: usize): *AttrInfo {
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var a = node(self, id);
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if a == null { ret null; }
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ret info_at(self, a.info_index);
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}
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// 追加属性节点（args 所有权转移）。
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fn alloc(self: *Attr, info_index: usize, args: Vec): usize {
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var a = new_node();
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a.info_index = info_index;
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a.args = args;
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match Vec.push(&self.table, &a as *u8) {
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.Ok => {},
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.Err(error) => { ret 0; },
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}
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ret self.table.len - 1;
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}
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fn registry_add(self: *Attr, info: AttrInfo) {
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match Vec.push(&self.registry, &info as *u8) {
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.Ok => {},
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.Err(error) => {},
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}
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}
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// 返回注册表下标（>=1）或 0。
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fn lookup(self: *Attr, ns: ByteView, name: ByteView): usize {
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var i: usize = 1;
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while i < self.registry.len {
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var info = info_at(self, i);
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if info != null && ByteView.eq(info.ns, ns) && ByteView.eq(info.name, name) {
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ret i;
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}
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i = i + 1;
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}
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ret 0;
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}
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fn make_info(ns: []u8, name: []u8, stage: AttrStage, target: AttrTarget, demand: AttrDemand,
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min_args: i32, max_args: i32): AttrInfo {
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ret AttrInfo {
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.ns = ByteView.from_slice(ns),
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.name = ByteView.from_slice(name),
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.stage = stage,
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.target = target,
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.demand = demand,
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.min_args = min_args,
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.max_args = max_args,
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};
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}
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fn register_builtins(self: *Attr) {
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registry_add(self, make_info("", "extern", .Ir, .Decl, .Required, 1, 1));
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registry_add(self, make_info("", "inline", .Opt, .Decl, .Optional, 0, 0));
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registry_add(self, make_info("", "noinline", .Opt, .Decl, .Optional, 0, 0));
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registry_add(self, make_info("", "align", .Layout, .Type, .Required, 1, 1));
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registry_add(self, make_info("", "volatile", .Ir, .Expr, .Required, 0, 0));
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registry_add(self, make_info("", "atomic", .Ir, .Expr, .Required, 0, 1));
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registry_add(self, make_info("", "export", .Ir, .Decl, .Optional, 1, 1));
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}
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// ---- dump（镜像 stage1 spl_attr_dump / spl_attr_dump_id）----
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fn push_out(buf: *ByteBuffer, bytes: []u8): bool {
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match ByteBuffer.append(buf, bytes) {
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.Ok => { ret true; },
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.Err(error) => { ret false; },
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}
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ret false;
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}
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fn push_usize(buf: *ByteBuffer, value: usize): bool {
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match append_usize(buf, value, 10, false) {
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.Ok => { ret true; },
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.Err(error) => { ret false; },
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}
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ret false;
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}
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fn push_hex(buf: *ByteBuffer, value: u32): bool {
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if !push_out(buf, "0x") { ret false; }
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match append_usize(buf, value as usize, 16, false) {
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.Ok => { ret true; },
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.Err(error) => { ret false; },
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}
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ret false;
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}
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fn stage_name(s: AttrStage): []u8 {
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match s {
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.Sema => { ret "SEMA"; },
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.Layout => { ret "LAYOUT"; },
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.Ir => { ret "IR"; },
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.Opt => { ret "OPT"; },
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.Backend => { ret "BACKEND"; },
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}
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ret "?";
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}
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fn target_name(t: AttrTarget): []u8 {
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match t {
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.Decl => { ret "DECL"; },
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.Type => { ret "TYPE"; },
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.Expr => { ret "EXPR"; },
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.Stmt => { ret "STMT"; },
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}
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ret "?";
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}
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fn demand_name(d: AttrDemand): []u8 {
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match d {
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.Required => { ret "REQUIRED"; },
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.Optional => { ret "OPTIONAL"; },
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}
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ret "?";
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}
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fn dump_id(self: *Attr, id: usize, out: *ByteBuffer): bool {
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if id == 0 {
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ret push_out(out, "?");
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}
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var a = node(self, id);
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if a == null { ret push_out(out, "?"); }
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var info = info_at(self, a.info_index);
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if info == null { ret push_out(out, "?"); }
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if !push_out(out, ByteView.as_slice(info.name)) { ret false; }
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if a.args.len == 0 { ret true; }
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if !push_out(out, "(") { ret false; }
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var i: usize = 0;
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while i < a.args.len {
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if i > 0 && !push_out(out, ", ") { ret false; }
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var arg = arg_at(&a.args, i);
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if arg == null { ret false; }
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match arg.* {
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.Int(v) => {
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match append_i64(out, v, 10, false) {
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.Ok => {},
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.Err(error) => { ret false; },
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}
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},
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.Str(v) => {
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if !push_out(out, "\"") { ret false; }
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if !push_out(out, ByteView.as_slice(v)) { ret false; }
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if !push_out(out, "\"") { ret false; }
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},
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.Def(v) => {
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if !push_out(out, "def#") { ret false; }
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if !push_usize(out, v) { ret false; }
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},
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.Type(v) => {
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if !push_out(out, "type#") { ret false; }
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if !push_usize(out, v) { ret false; }
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},
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}
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i = i + 1;
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}
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ret push_out(out, ")");
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}
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fn arg_at(v: *Vec, i: usize): *AttrArg {
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match Vec.get(v, i) {
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.Ok(ptr) => { ret ptr as *AttrArg; },
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.Err(error) => { ret null; },
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}
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ret null;
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}
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fn dump(self: *Attr, out: *ByteBuffer): bool {
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if !push_out(out, "AttrTable:\n") { ret false; }
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var i: usize = 1;
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while i < self.table.len {
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var a = node(self, i);
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if !push_out(out, " #") { ret false; }
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if !push_usize(out, i) { ret false; }
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if !push_out(out, " ") { ret false; }
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if !dump_id(self, i, out) { ret false; }
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if a != null {
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var info = info_at(self, a.info_index);
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if info != null {
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if !push_out(out, " [stage=") { ret false; }
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if !push_out(out, stage_name(info.stage)) { ret false; }
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if !push_out(out, " target=") { ret false; }
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if !push_out(out, target_name(info.target)) { ret false; }
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if !push_out(out, " demand=") { ret false; }
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if !push_out(out, demand_name(info.demand)) { ret false; }
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if !push_out(out, " consumed=") { ret false; }
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if !push_hex(out, a.consumed_mask) { ret false; }
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if !push_out(out, "]") { ret false; }
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}
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}
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if !push_out(out, "\n") { ret false; }
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i = i + 1;
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}
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ret true;
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}
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// ---- 测试 ----
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fn expect_text(buf: ByteBuffer, expected: []u8) {
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var got = ByteBuffer.as_slice(buf);
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@assert(got.len == expected.len, "dump length");
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var i: usize = 0;
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while i < expected.len {
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@assert(got.ptr[i] == expected.ptr[i], "dump byte");
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i = i + 1;
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}
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}
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fn test_registry() {
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var at: Attr = undefined;
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match new() {
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.Ok(v) => { at = v; },
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.Err(error) => { @assert(false, "attr new failed"); },
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}
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defer { drop(&at); }
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@assert(at.registry.len == 8, "1 sentinel + 7 builtins");
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var i = lookup(&at, ByteView.empty(), ByteView.from_slice("extern"));
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@assert(i != 0, "extern found");
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var info = info_at(&at, i);
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@assert(info != null, "extern info");
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@assert(info.min_args == 1 && info.max_args == 1, "extern arity");
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var j = lookup(&at, ByteView.empty(), ByteView.from_slice("atomic"));
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@assert(j != 0, "atomic found");
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var jinfo = info_at(&at, j);
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@assert(jinfo.min_args == 0 && jinfo.max_args == 1, "atomic arity");
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@assert(lookup(&at, ByteView.empty(), ByteView.from_slice("nope")) == 0, "unknown attr");
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}
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fn test_alloc_and_dump_id() {
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var at: Attr = undefined;
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match new() {
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.Ok(v) => { at = v; },
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.Err(error) => { @assert(false, "attr new failed"); },
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}
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defer { drop(&at); }
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var idx = lookup(&at, ByteView.empty(), ByteView.from_slice("extern"));
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var args = Vec.blank(@sizeof(AttrArg), @alignof(AttrArg));
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var s: AttrArg = .Str(ByteView.from_slice("vm"));
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match Vec.push(&args, &s as *u8) { .Ok => {}, .Err(e) => { @assert(false, "push str"); } }
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var n: AttrArg = .Int(3);
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match Vec.push(&args, &n as *u8) { .Ok => {}, .Err(e) => { @assert(false, "push int"); } }
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var d: AttrArg = .Def(9);
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match Vec.push(&args, &d as *u8) { .Ok => {}, .Err(e) => { @assert(false, "push def"); } }
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var id = alloc(&at, idx, args);
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@assert(id == 1, "first attr id");
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var out = ByteBuffer.new();
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defer { ByteBuffer.drop(&out); }
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if !dump_id(&at, id, &out) { @assert(false, "dump_id ok"); }
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expect_text(out, "extern(\"vm\", 3, def#9)");
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var out2 = ByteBuffer.new();
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defer { ByteBuffer.drop(&out2); }
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if !dump_id(&at, 0, &out2) { @assert(false, "dump_id none ok"); }
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expect_text(out2, "?");
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var out3 = ByteBuffer.new();
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defer { ByteBuffer.drop(&out3); }
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var l = lookup(&at, ByteView.empty(), ByteView.from_slice("inline"));
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var id2 = alloc(&at, l, Vec.blank(@sizeof(AttrArg), @alignof(AttrArg)));
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if !dump(&at, &out3) { @assert(false, "dump ok"); }
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// 只校验首尾关键片段，避免依赖完整表格排版
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var got = ByteBuffer.as_slice(out3);
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@assert(got.len > 0, "dump nonempty");
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}
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fn main() {
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test_registry();
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test_alloc_and_dump_id();
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}
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