66bdc70bf1
Move examples/*.sx and their expected/ snapshots into per-category subfolders (examples/<category>/...). Folder = leading filename token, with ffi-objc/ffi-jni kept whole; filenames are unchanged. The corpus runner and LSP sweep now discover each category's expected/ dir, while issues/ stays flat. Example 1058's repo-root-relative companion import is made file-relative. Path strings embedded in 164 snapshots were regenerated (path-only changes). Test-layout docs in CLAUDE.md updated.
48 lines
1.5 KiB
Plaintext
48 lines
1.5 KiB
Plaintext
// Protocol methods declare their receiver EXPLICITLY as the first parameter —
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// `self: *Self` (or `self: Self`) — matching the `impl` method signature. This
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// is required (the old implicit-receiver form is a parse error). The receiver
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// annotation is validated then erased, so dispatch and call sites are unchanged:
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// a method with N declared extra args is still called with N args.
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#import "modules/std.sx";
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Size :: struct { w: i32; h: i32; }
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// `self: *Self` receiver; one no-arg method and one with extra args.
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Measurable :: protocol #inline {
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measure :: (self: *Self) -> Size;
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scaled :: (self: *Self, factor: i32) -> Size;
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}
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// `self: Self` (by-value) receiver is also accepted.
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Named :: protocol {
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name :: (self: Self) -> string;
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}
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Widget :: struct { base: i32; }
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impl Measurable for Widget {
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measure :: (self: *Widget) -> Size { return Size.{ w = self.base, h = self.base * 2 }; }
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scaled :: (self: *Widget, factor: i32) -> Size {
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return Size.{ w = self.base * factor, h = self.base * 2 * factor };
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}
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}
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impl Named for Widget {
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name :: (self: Widget) -> string { return "widget"; }
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}
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main :: () -> i32 {
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w : Widget = .{ base = 5 };
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p : *Widget = @w;
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m : Measurable = xx p;
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s := m.measure(); // 0 extra args
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s2 := m.scaled(3); // 1 extra arg
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print("measure={}x{}\n", s.w, s.h); // 5x10
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print("scaled={}x{}\n", s2.w, s2.h); // 15x30
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n : Named = xx p;
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print("name={}\n", n.name()); // widget
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return 0;
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}
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