297f127821
Test-first scaffolding before the CallPlan convergence — no call-code change. Locks current call behavior so the later lowerCall rewrite is guarded. - .ir snapshots for representative call forms: 0031 (direct local-fn + dot-shorthand enum ctor), 0032 (UFCS/struct method), 0301 (closure/ fn-pointer slot), 0400 (protocol dispatch + static-through-impl). - New focused example 0044-basic-default-arg-expansion + .ir snapshot, pinning call-site default expansion (scale(5)->scale(ctx,5,2), label(1)->label(ctx,1,"v","!")). Foreign-class instance+static is already pinned by the existing FFI .ir set. - Broaden calls.test.zig (scope-free classification): remaining reflection builtins, sqrt->f64, cast->resolved type arg, enum_literal->target_type. 1033 (#caller_location) was rejected as a snapshot: it embeds the absolute source path as a length-typed string that normalize_ir can't reconcile; default-arg coverage uses the path-free 0044 instead. Gate green: zig build, zig build test, tests/run_examples.sh -> 357/0.
24 lines
865 B
Plaintext
24 lines
865 B
Plaintext
// Call-site default-argument expansion (`appendDefaultArgs` / `expandCallDefaults`
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// in lowerCall). A call that omits a trailing parameter with a default value
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// has the default expression spliced in at the call site; an explicit argument
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// overrides it. Two trailing defaults cover the "fill all remaining" path.
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// Path-free IR (literal defaults) so the `.ir` snapshot is location-stable.
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#import "modules/std.sx";
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scale :: (n: s32, factor: s32 = 2) -> s32 { n * factor }
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label :: (n: s32, prefix: string = "v", suffix: string = "!") -> s32 {
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print("{}{}{}\n", prefix, n, suffix);
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n
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}
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main :: () {
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print("default: {}\n", scale(5));
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print("explicit: {}\n", scale(5, 3));
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_ = label(1); // both defaults filled
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_ = label(2, "x"); // suffix default filled
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_ = label(3, "y", "?"); // no defaults
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}
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