shadowing rejected

○ Planned This feature is planned but not yet implemented.

This should be done, it is lazily handled by the Zig-compiler, look at the README.md-file in this directory for the problem.

Error Details

output_emitted.zig:83:15: error: redeclaration of local constant 'r'

Failure Output

Showing last 10 of 105 lines

[MAIN DEBUG]   emitted_file = output_emitted.zig
[MAIN DEBUG]   emitted_file.ptr = u8@1006ea29e
[MAIN DEBUG]   First 50 bytes: // Access compiler flags from backend.zig via root

Error: output_emitted.zig:83:15: error: redeclaration of local constant 'r'
        const r = result_1.data;
              ^
output_emitted.zig:80:15: note: previous declaration here
        const r = result_0.result;
              ^

Code

// Test 202c: Shadowing validation - should be rejected by Koru compiler
//
// EXPECTED BEHAVIOR: Koru compiler should reject duplicate binding names
// ACTUAL BEHAVIOR: Currently passes through to Zig, which rejects it
//
// This test documents that shadowing validation is currently "lazy" -
// we rely on Zig to catch it rather than validating in Koru compiler.

const std = @import("std");

~event first { value: i32 }
| result i32

~proc first|zig {
    return .{ .result = value * 2 };
}

~event second { value: i32 }
| data i32

~proc second|zig {
    return .{ .data = value * 3 };
}

~event show { outer_val: i32, inner_val: i32 }

~proc show|zig {
    std.debug.print("Outer: {}, Inner: {}\n", .{outer_val, inner_val});
}

// ERROR: Duplicate binding name 'r'
// The outer 'r' is from | result r |>
// The inner 'r' is from | data r |>
// This should be caught by Koru compiler, not Zig compiler
~first(value: 10)
| result r |> second(value: r.num)
    | data r |> show(outer_val: r.num, inner_val: r.num)

input.kz

Test Configuration

Expected Error:

error: capture 'r' shadows capture from outer scope

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