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Passing This code compiles and runs correctly.
Code
// Test: ~if uses REAL template system (lookupTemplate + interpolate)
//
// This test verifies that the ~if transform:
// 1. Calls template_utils.lookupTemplate(program, "if")
// 2. Finds the template defined in control.kz
// 3. Interpolates with ${condition}, ${| then |}, ${| else |}
// 4. Uses the result as inline_body
//
// This is ACTUAL template metaprogramming, not hardcoded string building!
// Mom can put this on the refrigerator.
~import std/io
const std = @import("std");
const value = 42;
~if(value > 10)
| then |> std/io:print("Template says: greater!\n")
| else |> std/io:print("Template says: not greater!\n")
Actual
Template says: greater!
Expected output
Template says: greater!
Flows
flow ~if click a branch to expand · @labels scroll to their anchor
if (value > 10)
Test Configuration
MUST_RUN
Post-validation Script:
#!/bin/bash
# Verify that ~if uses REAL template system
OUTPUT_FILE="output_emitted.zig"
# Check 1: No if_impl handler calls (excluding comments)
if grep -v "^[[:space:]]*//" "$OUTPUT_FILE" | grep -q "if_impl_event.handler"; then
echo "FAIL: Found if_impl_event.handler - should use inline code"
exit 1
fi
# Check 2: Has literal if statement with condition
if ! grep -qE "if \(value > 10\)" "$OUTPUT_FILE"; then
echo "FAIL: Expected 'if (value > 10)' not found"
exit 1
fi
# Check 3: Verify the template structure was used
# The template produces: if (${condition}) { ${| then |} } else { ${| else |} }
# The branch bodies are comptime print transforms — they land as inline
# stdout writes inside the if/else (print is a transform, not a runtime handler,
# since 2026-06-11). The print family writes to stdout via an inline
# (struct { fn w }).w("...", .{}) bufPrint+posix.write (since the 2026-06-29
# stdout/stderr split), so the template text lands in the emitted .w(...) call.
if ! grep -q ').__kw("Template says' "$OUTPUT_FILE"; then
echo "FAIL: Expected inline print output for then/else bodies not found"
exit 1
fi
echo "PASS: ~if uses template-based code generation"
exit 0