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.
45 lines
1.7 KiB
Plaintext
45 lines
1.7 KiB
Plaintext
// Variadic heterogeneous type packs — step 4 source-construction
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// path: `$args[$i]` in expression position yields a comptime Type
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// VALUE (`Value.type_tag(TypeId)` in the interp). Lets builders +
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// pack-fn bodies dispatch on the i-th pack type at compile time.
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//
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// Two usage shapes covered here:
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//
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// 1. `type_name($args[0])` — the value-form Type goes through the
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// reflection intrinsic, picking up the per-mono concrete type.
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//
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// 2. `inline if type_eq($args[0], i64) { ... }` — compile-time
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// branch over the pack element's type. The fold via
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// `tryConstBoolCondition` reads $args[0] via `resolveTypeArg`,
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// which the step-4 work taught to walk `pack_arg_types`.
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//
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// Lowering: `$args[$i]` in expression position emits a
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// `const_type(arg_types[i])` IR op. The interp materialises a
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// `Value.type_tag(TypeId)`. LLVM emit bails (Type is comptime-only).
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#import "modules/std.sx";
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show :: (..$args) -> string => type_name($args[0]);
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describe :: (..$args) -> string {
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inline if type_eq($args[0], i64) { return "got i64"; }
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inline if type_eq($args[0], string) { return "got string"; }
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inline if type_eq($args[0], bool) { return "got bool"; }
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return "got other";
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}
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main :: () -> i32 {
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// type_name picks up the per-mono first-arg type.
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print("{}\n", show(42)); // i64
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print("{}\n", show("hi")); // string
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print("{}\n", show(3.14)); // f64
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// inline-if + type_eq picks the right branch per mono.
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print("{}\n", describe(42)); // got i64
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print("{}\n", describe("hello")); // got string
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print("{}\n", describe(true)); // got bool
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print("{}\n", describe(3.14)); // got other
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return 0;
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}
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