147 optional string equality

✓ Passing This code compiles and runs correctly.

Code

// Pins: `==` and `!=` on OPTIONAL strings and on identifier-vs-identifier
// pairs — 320_140's shape with `?string` and two runtime operands. The
// emission is presence-aware (null==null true, null==value false without
// touching the payload) and type-dispatched at comptime: u8 strings take
// mem.eql, everything else folds back to `==` — the rewrite has no type
// oracle, so the emitted Zig interrogates @typeInfo itself.
import std/io

pub tor src { name: string } -> ?string
proc src|zig { return name; }

pub tor none {} -> ?string
proc none|zig { return null; }

pub tor word { w: string } -> string
proc word|zig { return w; }

pub tor num { n: i64 } -> i64
proc num|zig { return n; }

src(name: "clip.wav"): a
|> if (a == "clip.wav")
| then |> std/io:print.ln("match")
| else |> std/io:print.ln("FAIL-match")

src(name: "other.wav"): b
|> if (b != "clip.wav")
| then |> std/io:print.ln("mismatch")
| else |> std/io:print.ln("FAIL-mismatch")

none(): c
|> if (c != "clip.wav")
| then |> std/io:print.ln("null-nomatch")
| else |> std/io:print.ln("FAIL-null")

none(): d
|> if (d == "clip.wav")
| then |> std/io:print.ln("FAIL-null-eq")
| else |> std/io:print.ln("null-false")

word(w: "x"): s1
|> word(w: "x"): s2
|> if (s1 == s2)
| then |> std/io:print.ln("ident-eq")
| else |> std/io:print.ln("FAIL-ident-eq")

word(w: "x"): s3
|> word(w: "y"): s4
|> if (s3 != s4)
| then |> std/io:print.ln("ident-ne")
| else |> std/io:print.ln("FAIL-ident-ne")

num(n: 3): n1
|> num(n: 3): n2
|> if (n1 == n2)
| then |> std/io:print.ln("int-eq")
| else |> std/io:print.ln("FAIL-int-eq")

src(name: "x"): o1
|> word(w: "x"): s5
|> if (o1 == s5)
| then |> std/io:print.ln("opt-str-eq")
| else |> std/io:print.ln("FAIL-opt-str")

src(name: "clip.wav"): e
|> if (e.? == "clip.wav" and e == "clip.wav")
| then |> std/io:print.ln("unwrap-eq")
| else |> std/io:print.ln("FAIL-unwrap")

input.k

Supporting Files

~proc src|cs { return name; 
}
~proc none|cs { return null; 
}
~proc word|cs { return w; 
}
~proc num|cs { return n; 
}

input.kcs

Actual

match
mismatch
null-nomatch
null-false
ident-eq
ident-ne
int-eq
opt-str-eq
unwrap-eq

Expected output

✓ Zig✓ C#

match
mismatch
null-nomatch
null-false
ident-eq
ident-ne
int-eq
opt-str-eq
unwrap-eq

Emitted Zig source

// Access compiler flags via the per-user compiler_env module
const CompilerEnv = @import("compiler_env").CompilerEnv;

pub const panic = if (@import("builtin").mode == .Debug)
    @import("std").debug.FullPanic(@import("std").debug.defaultPanic)
else
    @import("std").debug.simple_panic;


const __koru_bare = struct {
    extern fn posix_memalign(memptr: *?*anyopaque, alignment: usize, size: usize) c_int;
    extern fn free(ptr: ?*anyopaque) void;
    fn bareAlloc(_: *anyopaque, len: usize, alignment: @import("std").mem.Alignment, _: usize) ?[*]u8 {
        var p: ?*anyopaque = null;
        const a = @max(alignment.toByteUnits(), @sizeOf(usize));
        if (posix_memalign(&p, a, len) != 0) return null;
        return @ptrCast(p);
    }
    fn bareResize(_: *anyopaque, _: []u8, _: @import("std").mem.Alignment, _: usize, _: usize) bool { return false; }
    fn bareRemap(_: *anyopaque, _: []u8, _: @import("std").mem.Alignment, _: usize, _: usize) ?[*]u8 { return null; }
    fn bareFree(_: *anyopaque, memory: []u8, _: @import("std").mem.Alignment, _: usize) void { free(@ptrCast(memory.ptr)); }
    const vtable = @import("std").mem.Allocator.VTable{ .alloc = bareAlloc, .resize = bareResize, .remap = bareRemap, .free = bareFree };
    const allocator = @import("std").mem.Allocator{ .ptr = undefined, .vtable = &vtable };
};
const __koru_backing = if (@import("builtin").link_libc) @import("std").heap.c_allocator else if (@import("builtin").os.tag == .freestanding and !@import("builtin").cpu.arch.isWasm()) __koru_bare.allocator else @import("std").heap.page_allocator;
var __koru_leak_count: @import("std").atomic.Value(usize) = .init(0);
fn __koru_alloc(ctx: *anyopaque, len: usize, alignment: @import("std").mem.Alignment, ret_addr: usize) ?[*]u8 {
    _ = ctx;
    const r = __koru_backing.rawAlloc(len, alignment, ret_addr);
    if (comptime @import("builtin").mode == .Debug) {
        if (r != null) _ = __koru_leak_count.fetchAdd(1, .monotonic);
    }
    return r;
}
fn __koru_resize(ctx: *anyopaque, memory: []u8, alignment: @import("std").mem.Alignment, new_len: usize, ret_addr: usize) bool {
    _ = ctx;
    return __koru_backing.rawResize(memory, alignment, new_len, ret_addr);
}
fn __koru_remap(ctx: *anyopaque, memory: []u8, alignment: @import("std").mem.Alignment, new_len: usize, ret_addr: usize) ?[*]u8 {
    _ = ctx;
    return __koru_backing.rawRemap(memory, alignment, new_len, ret_addr);
}
fn __koru_free(ctx: *anyopaque, memory: []u8, alignment: @import("std").mem.Alignment, ret_addr: usize) void {
    _ = ctx;
    __koru_backing.rawFree(memory, alignment, ret_addr);
    if (comptime @import("builtin").mode == .Debug) {
        _ = __koru_leak_count.fetchSub(1, .monotonic);
    }
}
const __koru_vtable = @import("std").mem.Allocator.VTable{ .alloc = __koru_alloc, .resize = __koru_resize, .remap = __koru_remap, .free = __koru_free };
pub fn koru_allocator() @import("std").mem.Allocator {
    return .{ .ptr = undefined, .vtable = &__koru_vtable };
}

pub inline fn __koru_intcast(comptime T: type, x: anytype) T {
    if (comptime (@import("builtin").mode == .Debug or @import("builtin").mode == .ReleaseSafe))
        return @as(T, @intCast(x));
    const dst = @typeInfo(T);
    const src = @typeInfo(@TypeOf(x));
    if (comptime (dst == .int and src == .int and dst.int.bits == src.int.bits and dst.int.signedness != src.int.signedness))
        return @as(T, @bitCast(x));
    return @as(T, @intCast(x));
}

pub fn koru_leak_check() void {
    if (comptime @import("builtin").mode != .Debug) return;
    if (__koru_leak_count.load(.acquire) == 0) return;
    if (comptime @import("builtin").target.os.tag == .freestanding) {
        if (comptime @import("builtin").cpu.arch == .wasm32 or @import("builtin").cpu.arch == .wasm64) {
            @panic("KORU LEAK CHECK FAILED: the produced program leaked");
        } else {
            const __klc = struct { extern var stdout: ?*anyopaque; extern fn fputs(__s: [*:0]const u8, __st: ?*anyopaque) c_int; };
            var __lb: [128]u8 = undefined;
            const __lm = "KORU LEAK CHECK FAILED: allocations still outstanding at end of run: ";
            @memcpy(__lb[0..__lm.len], __lm);
            var __ln: usize = __lm.len;
            var __lv = __koru_leak_count.load(.acquire);
            var __ld: [20]u8 = undefined;
            var __lk: usize = 0;
            while (__lv > 0) : (__lk += 1) { __ld[__lk] = @intCast('0' + __lv % 10); __lv /= 10; }
            for (0..__lk) |__li| { __lb[__ln] = __ld[__lk - 1 - __li]; __ln += 1; }
            __lb[__ln] = '\n'; __ln += 1; __lb[__ln] = 0;
            _ = __klc.fputs(@as([*:0]const u8, @ptrCast(&__lb)), __klc.stdout);
            @trap();
        }
    } else {
        @import("std").debug.print("KORU LEAK CHECK FAILED: the produced program leaked (trace above)\n", .{});
        @import("std").process.exit(1);
    }
}

pub const main_module = struct {
    pub const src_event = struct {
        pub const Input = struct {
            name: []const u8,
        };
        pub const Output = ?[]const u8;
        pub fn handler(__koru_event_input: @This().Input) @This().Output {
            // >>> PROC: src  [tests/regression/320_CONTROL_FLOW/320_147_optional_string_equality/input.k:11]
            const name = __koru_event_input.name;
            _ = &name;
            _ = &__koru_event_input;
            return name;

        }
    };
    pub const none_event = struct {
        pub const Input = struct {
        };
        pub const Output = ?[]const u8;
        pub fn handler(__koru_event_input: @This().Input) @This().Output {
            // >>> PROC: none  [tests/regression/320_CONTROL_FLOW/320_147_optional_string_equality/input.k:14]
            _ = &__koru_event_input;
            return null;

        }
    };
    pub const word_event = struct {
        pub const Input = struct {
            w: []const u8,
        };
        pub const Output = []const u8;
        pub fn handler(__koru_event_input: @This().Input) @This().Output {
            // >>> PROC: word  [tests/regression/320_CONTROL_FLOW/320_147_optional_string_equality/input.k:17]
            const w = __koru_event_input.w;
            _ = &w;
            _ = &__koru_event_input;
            return w;

        }
    };
    pub const num_event = struct {
        pub const Input = struct {
            n: i64,
        };
        pub const Output = i64;
        pub inline fn handler(__koru_event_input: @This().Input) @This().Output {
            return __koru_handler_impl(__koru_event_input.n);
        }
        fn __koru_handler_impl(__koru_p_0: i64) @This().Output {
            const __koru_event_input: @This().Input = .{ .n = __koru_p_0 };
            // >>> PROC: num  [tests/regression/320_CONTROL_FLOW/320_147_optional_string_equality/input.k:20]
            const n = __koru_event_input.n;
            _ = &n;
            _ = &__koru_event_input;
            return n;

        }
    };
    // >>> FLOW: tests/regression/320_CONTROL_FLOW/320_147_optional_string_equality/input.k:22  ~input:src()
    pub fn flow0() void {
        const a = main_module.src_event.handler(.{ .name = "clip.wav" });
        
    if ((blk: { const __koru_l = a; const __koru_r = "clip.wav"; const __koru_ln = if (@typeInfo(@TypeOf(__koru_l)) == .optional) __koru_l == null else false; const __koru_rn = if (@typeInfo(@TypeOf(__koru_r)) == .optional) __koru_r == null else false; break :blk (__koru_ln == __koru_rn) and (__koru_ln or @import("std").mem.eql(u8, if (@typeInfo(@TypeOf(__koru_l)) == .optional) __koru_l.? else __koru_l, if (@typeInfo(@TypeOf(__koru_r)) == .optional) __koru_r.? else __koru_r)); })) {
        {         (struct { fn __kout(__fd: i32, __b: []const u8) void { if (@import("builtin").os.tag == .freestanding) { const __kc = struct { extern var stdout: ?*anyopaque; extern var stderr: ?*anyopaque; extern fn fputs(__s: [*:0]const u8, __st: ?*anyopaque) c_int; }; var __kt: [4096]u8 = undefined; for (0..(__b.len + __kt.len - 2) / (__kt.len - 1)) |__ki| { const __kn = @min(__kt.len - 1, __b.len - __ki * (__kt.len - 1)); @memcpy(__kt[0..__kn], __b[__ki * (__kt.len - 1)..][0..__kn]); __kt[__kn] = 0; @import("std").mem.doNotOptimizeAway(__kc.fputs(@as([*:0]const u8, @ptrCast(&__kt)), if (__fd == 2) __kc.stderr else __kc.stdout)); } } else { @import("std").mem.doNotOptimizeAway(@import("std").posix.write(__fd, __b) catch @as(usize, 0)); } } fn __kw(comptime __f: []const u8, __a: anytype) void { var __kb: [65536]u8 = undefined; const __ks = @import("std").fmt.bufPrint(&__kb, __f, __a) catch __kb[0..0]; __kout(1, __ks); } }).__kw("match\n", .{});
 }
    } else {
        {         (struct { fn __kout(__fd: i32, __b: []const u8) void { if (@import("builtin").os.tag == .freestanding) { const __kc = struct { extern var stdout: ?*anyopaque; extern var stderr: ?*anyopaque; extern fn fputs(__s: [*:0]const u8, __st: ?*anyopaque) c_int; }; var __kt: [4096]u8 = undefined; for (0..(__b.len + __kt.len - 2) / (__kt.len - 1)) |__ki| { const __kn = @min(__kt.len - 1, __b.len - __ki * (__kt.len - 1)); @memcpy(__kt[0..__kn], __b[__ki * (__kt.len - 1)..][0..__kn]); __kt[__kn] = 0; @import("std").mem.doNotOptimizeAway(__kc.fputs(@as([*:0]const u8, @ptrCast(&__kt)), if (__fd == 2) __kc.stderr else __kc.stdout)); } } else { @import("std").mem.doNotOptimizeAway(@import("std").posix.write(__fd, __b) catch @as(usize, 0)); } } fn __kw(comptime __f: []const u8, __a: anytype) void { var __kb: [65536]u8 = undefined; const __ks = @import("std").fmt.bufPrint(&__kb, __f, __a) catch __kb[0..0]; __kout(1, __ks); } }).__kw("FAIL-match\n", .{});
 }
    }
    }
    // >>> FLOW: tests/regression/320_CONTROL_FLOW/320_147_optional_string_equality/input.k:27  ~input:src()
    pub fn flow1() void {
        const b = main_module.src_event.handler(.{ .name = "other.wav" });
        
    if (!(blk: { const __koru_l = b; const __koru_r = "clip.wav"; const __koru_ln = if (@typeInfo(@TypeOf(__koru_l)) == .optional) __koru_l == null else false; const __koru_rn = if (@typeInfo(@TypeOf(__koru_r)) == .optional) __koru_r == null else false; break :blk (__koru_ln == __koru_rn) and (__koru_ln or @import("std").mem.eql(u8, if (@typeInfo(@TypeOf(__koru_l)) == .optional) __koru_l.? else __koru_l, if (@typeInfo(@TypeOf(__koru_r)) == .optional) __koru_r.? else __koru_r)); })) {
        {         (struct { fn __kout(__fd: i32, __b: []const u8) void { if (@import("builtin").os.tag == .freestanding) { const __kc = struct { extern var stdout: ?*anyopaque; extern var stderr: ?*anyopaque; extern fn fputs(__s: [*:0]const u8, __st: ?*anyopaque) c_int; }; var __kt: [4096]u8 = undefined; for (0..(__b.len + __kt.len - 2) / (__kt.len - 1)) |__ki| { const __kn = @min(__kt.len - 1, __b.len - __ki * (__kt.len - 1)); @memcpy(__kt[0..__kn], __b[__ki * (__kt.len - 1)..][0..__kn]); __kt[__kn] = 0; @import("std").mem.doNotOptimizeAway(__kc.fputs(@as([*:0]const u8, @ptrCast(&__kt)), if (__fd == 2) __kc.stderr else __kc.stdout)); } } else { @import("std").mem.doNotOptimizeAway(@import("std").posix.write(__fd, __b) catch @as(usize, 0)); } } fn __kw(comptime __f: []const u8, __a: anytype) void { var __kb: [65536]u8 = undefined; const __ks = @import("std").fmt.bufPrint(&__kb, __f, __a) catch __kb[0..0]; __kout(1, __ks); } }).__kw("mismatch\n", .{});
 }
    } else {
        {         (struct { fn __kout(__fd: i32, __b: []const u8) void { if (@import("builtin").os.tag == .freestanding) { const __kc = struct { extern var stdout: ?*anyopaque; extern var stderr: ?*anyopaque; extern fn fputs(__s: [*:0]const u8, __st: ?*anyopaque) c_int; }; var __kt: [4096]u8 = undefined; for (0..(__b.len + __kt.len - 2) / (__kt.len - 1)) |__ki| { const __kn = @min(__kt.len - 1, __b.len - __ki * (__kt.len - 1)); @memcpy(__kt[0..__kn], __b[__ki * (__kt.len - 1)..][0..__kn]); __kt[__kn] = 0; @import("std").mem.doNotOptimizeAway(__kc.fputs(@as([*:0]const u8, @ptrCast(&__kt)), if (__fd == 2) __kc.stderr else __kc.stdout)); } } else { @import("std").mem.doNotOptimizeAway(@import("std").posix.write(__fd, __b) catch @as(usize, 0)); } } fn __kw(comptime __f: []const u8, __a: anytype) void { var __kb: [65536]u8 = undefined; const __ks = @import("std").fmt.bufPrint(&__kb, __f, __a) catch __kb[0..0]; __kout(1, __ks); } }).__kw("FAIL-mismatch\n", .{});
 }
    }
    }
    // >>> FLOW: tests/regression/320_CONTROL_FLOW/320_147_optional_string_equality/input.k:32  ~input:none()
    pub fn flow2() void {
        const c = main_module.none_event.handler(.{  });
        
    if (!(blk: { const __koru_l = c; const __koru_r = "clip.wav"; const __koru_ln = if (@typeInfo(@TypeOf(__koru_l)) == .optional) __koru_l == null else false; const __koru_rn = if (@typeInfo(@TypeOf(__koru_r)) == .optional) __koru_r == null else false; break :blk (__koru_ln == __koru_rn) and (__koru_ln or @import("std").mem.eql(u8, if (@typeInfo(@TypeOf(__koru_l)) == .optional) __koru_l.? else __koru_l, if (@typeInfo(@TypeOf(__koru_r)) == .optional) __koru_r.? else __koru_r)); })) {
        {         (struct { fn __kout(__fd: i32, __b: []const u8) void { if (@import("builtin").os.tag == .freestanding) { const __kc = struct { extern var stdout: ?*anyopaque; extern var stderr: ?*anyopaque; extern fn fputs(__s: [*:0]const u8, __st: ?*anyopaque) c_int; }; var __kt: [4096]u8 = undefined; for (0..(__b.len + __kt.len - 2) / (__kt.len - 1)) |__ki| { const __kn = @min(__kt.len - 1, __b.len - __ki * (__kt.len - 1)); @memcpy(__kt[0..__kn], __b[__ki * (__kt.len - 1)..][0..__kn]); __kt[__kn] = 0; @import("std").mem.doNotOptimizeAway(__kc.fputs(@as([*:0]const u8, @ptrCast(&__kt)), if (__fd == 2) __kc.stderr else __kc.stdout)); } } else { @import("std").mem.doNotOptimizeAway(@import("std").posix.write(__fd, __b) catch @as(usize, 0)); } } fn __kw(comptime __f: []const u8, __a: anytype) void { var __kb: [65536]u8 = undefined; const __ks = @import("std").fmt.bufPrint(&__kb, __f, __a) catch __kb[0..0]; __kout(1, __ks); } }).__kw("null-nomatch\n", .{});
 }
    } else {
        {         (struct { fn __kout(__fd: i32, __b: []const u8) void { if (@import("builtin").os.tag == .freestanding) { const __kc = struct { extern var stdout: ?*anyopaque; extern var stderr: ?*anyopaque; extern fn fputs(__s: [*:0]const u8, __st: ?*anyopaque) c_int; }; var __kt: [4096]u8 = undefined; for (0..(__b.len + __kt.len - 2) / (__kt.len - 1)) |__ki| { const __kn = @min(__kt.len - 1, __b.len - __ki * (__kt.len - 1)); @memcpy(__kt[0..__kn], __b[__ki * (__kt.len - 1)..][0..__kn]); __kt[__kn] = 0; @import("std").mem.doNotOptimizeAway(__kc.fputs(@as([*:0]const u8, @ptrCast(&__kt)), if (__fd == 2) __kc.stderr else __kc.stdout)); } } else { @import("std").mem.doNotOptimizeAway(@import("std").posix.write(__fd, __b) catch @as(usize, 0)); } } fn __kw(comptime __f: []const u8, __a: anytype) void { var __kb: [65536]u8 = undefined; const __ks = @import("std").fmt.bufPrint(&__kb, __f, __a) catch __kb[0..0]; __kout(1, __ks); } }).__kw("FAIL-null\n", .{});
 }
    }
    }
    // >>> FLOW: tests/regression/320_CONTROL_FLOW/320_147_optional_string_equality/input.k:37  ~input:none()
    pub fn flow3() void {
        const d = main_module.none_event.handler(.{  });
        
    if ((blk: { const __koru_l = d; const __koru_r = "clip.wav"; const __koru_ln = if (@typeInfo(@TypeOf(__koru_l)) == .optional) __koru_l == null else false; const __koru_rn = if (@typeInfo(@TypeOf(__koru_r)) == .optional) __koru_r == null else false; break :blk (__koru_ln == __koru_rn) and (__koru_ln or @import("std").mem.eql(u8, if (@typeInfo(@TypeOf(__koru_l)) == .optional) __koru_l.? else __koru_l, if (@typeInfo(@TypeOf(__koru_r)) == .optional) __koru_r.? else __koru_r)); })) {
        {         (struct { fn __kout(__fd: i32, __b: []const u8) void { if (@import("builtin").os.tag == .freestanding) { const __kc = struct { extern var stdout: ?*anyopaque; extern var stderr: ?*anyopaque; extern fn fputs(__s: [*:0]const u8, __st: ?*anyopaque) c_int; }; var __kt: [4096]u8 = undefined; for (0..(__b.len + __kt.len - 2) / (__kt.len - 1)) |__ki| { const __kn = @min(__kt.len - 1, __b.len - __ki * (__kt.len - 1)); @memcpy(__kt[0..__kn], __b[__ki * (__kt.len - 1)..][0..__kn]); __kt[__kn] = 0; @import("std").mem.doNotOptimizeAway(__kc.fputs(@as([*:0]const u8, @ptrCast(&__kt)), if (__fd == 2) __kc.stderr else __kc.stdout)); } } else { @import("std").mem.doNotOptimizeAway(@import("std").posix.write(__fd, __b) catch @as(usize, 0)); } } fn __kw(comptime __f: []const u8, __a: anytype) void { var __kb: [65536]u8 = undefined; const __ks = @import("std").fmt.bufPrint(&__kb, __f, __a) catch __kb[0..0]; __kout(1, __ks); } }).__kw("FAIL-null-eq\n", .{});
 }
    } else {
        {         (struct { fn __kout(__fd: i32, __b: []const u8) void { if (@import("builtin").os.tag == .freestanding) { const __kc = struct { extern var stdout: ?*anyopaque; extern var stderr: ?*anyopaque; extern fn fputs(__s: [*:0]const u8, __st: ?*anyopaque) c_int; }; var __kt: [4096]u8 = undefined; for (0..(__b.len + __kt.len - 2) / (__kt.len - 1)) |__ki| { const __kn = @min(__kt.len - 1, __b.len - __ki * (__kt.len - 1)); @memcpy(__kt[0..__kn], __b[__ki * (__kt.len - 1)..][0..__kn]); __kt[__kn] = 0; @import("std").mem.doNotOptimizeAway(__kc.fputs(@as([*:0]const u8, @ptrCast(&__kt)), if (__fd == 2) __kc.stderr else __kc.stdout)); } } else { @import("std").mem.doNotOptimizeAway(@import("std").posix.write(__fd, __b) catch @as(usize, 0)); } } fn __kw(comptime __f: []const u8, __a: anytype) void { var __kb: [65536]u8 = undefined; const __ks = @import("std").fmt.bufPrint(&__kb, __f, __a) catch __kb[0..0]; __kout(1, __ks); } }).__kw("null-false\n", .{});
 }
    }
    }
    // >>> FLOW: tests/regression/320_CONTROL_FLOW/320_147_optional_string_equality/input.k:42  ~input:word()
    pub fn flow4() void {
        const s1 = main_module.word_event.handler(.{ .w = "x" });
        const s2 = main_module.word_event.handler(.{ .w = "x" });
        _ = &s2;
        
    if ((blk: { const __koru_l = s1; const __koru_r = s2; const __koru_lo = @typeInfo(@TypeOf(__koru_l)) == .optional; const __koru_ro = @typeInfo(@TypeOf(__koru_r)) == .optional; const __koru_lp = if (__koru_lo) @typeInfo(@TypeOf(__koru_l)).optional.child else @TypeOf(__koru_l); const __koru_rp = if (__koru_ro) @typeInfo(@TypeOf(__koru_r)).optional.child else @TypeOf(__koru_r); const __koru_ls = __koru_str: { const __koru_ty = @typeInfo(__koru_lp); if (__koru_ty == .array) break :__koru_str __koru_ty.array.child == u8; if (__koru_ty == .pointer) { const __koru_ptr = __koru_ty.pointer; if (__koru_ptr.size == .slice and __koru_ptr.child == u8) break :__koru_str true; break :__koru_str __koru_ptr.size == .one and @typeInfo(__koru_ptr.child) == .array and @typeInfo(__koru_ptr.child).array.child == u8; } break :__koru_str false; }; const __koru_rs = __koru_str: { const __koru_ty = @typeInfo(__koru_rp); if (__koru_ty == .array) break :__koru_str __koru_ty.array.child == u8; if (__koru_ty == .pointer) { const __koru_ptr = __koru_ty.pointer; if (__koru_ptr.size == .slice and __koru_ptr.child == u8) break :__koru_str true; break :__koru_str __koru_ptr.size == .one and @typeInfo(__koru_ptr.child) == .array and @typeInfo(__koru_ptr.child).array.child == u8; } break :__koru_str false; }; if (__koru_ls and __koru_rs) { const __koru_ln = if (__koru_lo) __koru_l == null else false; const __koru_rn = if (__koru_ro) __koru_r == null else false; break :blk (__koru_ln == __koru_rn) and (__koru_ln or @import("std").mem.eql(u8, if (__koru_lo) __koru_l.? else __koru_l, if (__koru_ro) __koru_r.? else __koru_r)); } else break :blk __koru_l == __koru_r; })) {
        {         (struct { fn __kout(__fd: i32, __b: []const u8) void { if (@import("builtin").os.tag == .freestanding) { const __kc = struct { extern var stdout: ?*anyopaque; extern var stderr: ?*anyopaque; extern fn fputs(__s: [*:0]const u8, __st: ?*anyopaque) c_int; }; var __kt: [4096]u8 = undefined; for (0..(__b.len + __kt.len - 2) / (__kt.len - 1)) |__ki| { const __kn = @min(__kt.len - 1, __b.len - __ki * (__kt

... [truncated - 37KB total]

Emitted C# source

static class main_module {
  public static void __koru_stdout_write(object s) => global::System.Console.Out.Write(s);
  public static void __koru_stderr_write(object s) => global::System.Console.Error.Write(s);
  // The mutable handle carrier — `*String`-style resources are
  // `new __KoruBox { data = … }` because C# anonymous types are
  // read-only: `s.data = …` (std/string append/clear, handle
  // mutation generally) needs a settable member. `object`, not
  // `dynamic`: the field is storage — every `x.data` read reaches
  // it through a dynamic-typed handle (`*T` Input fields, the
  // `dynamic` borrow locals below), so the member itself only
  // needs to hold the value, and `object` keeps the DLR out of
  // the store/load path.
  public class __KoruBox { public object data; }
  // Textification for `{{ … }}` operands: C# bool ToStrings as
  // `True` where Koru prints `true`, and the operand's static type
  // is unknown at this boundary — a `(x) is bool` inline test would
  // be a compile error on statically-typed operands instead. Generic
  // on purpose: `dynamic` boxed every value-type operand — measured
  // ~1s/10M elements on 012_threat_scanner — while T specializes to
  // the operand's own ToString() with no box.
  public static string __koru_str<T>(T v) => v is bool b ? (b ? "true" : "false") : v?.ToString();
  public static class src_event {
    public struct Input {
      public string name;
    }
    public static dynamic handler(Input __koru_input) {
      var name = __koru_input.name;
      return name;

      return default;

    }
  }
  public static class none_event {
    public struct Input {
    }
    public static dynamic handler(Input __koru_input) {
      return null;

      return default;

    }
  }
  public static class word_event {
    public struct Input {
      public string w;
    }
    public static string handler(Input __koru_input) {
      var w = __koru_input.w;
      return w;

      return default;

    }
  }
  public static class num_event {
    public struct Input {
      public long n;
    }
    public static long handler(Input __koru_input) {
      var n = __koru_input.n;
      return n;

      return default;

    }
  }
  public static class std_control_if_event {
    public struct Input {
      public string expr;
    }
    public struct Output {
      public string tag;
      public object then;
      public object @else;
    }
    public static Output handler(Input __koru_input) {
      var expr = __koru_input.expr;
      throw new global::System.Exception("if: |template| proc is inlined at call sites and must never be called");
    }
  }
  public static class koru_start_event {
    public struct Input {
    }
    public struct Output {
      public string tag;
      public object done;
    }
    public static Output handler(Input __koru_input) => new Output { tag = "done" };
  }
  public static class koru_end_event {
    public struct Input {
    }
    public struct Output {
      public string tag;
      public object done;
    }
    public static Output handler(Input __koru_input) => new Output { tag = "done" };
  }
  public static void flow0() {
    var a = main_module.src_event.handler(new src_event.Input { name = (string)("clip.wav")});
if (a == "clip.wav") {
        { __koru_stdout_write("match" + "\n");
 }
    } else {
        { __koru_stdout_write("FAIL-match" + "\n");
 }
    }
  }
  public static void flow1() {
    var b = main_module.src_event.handler(new src_event.Input { name = (string)("other.wav")});
if (b != "clip.wav") {
        { __koru_stdout_write("mismatch" + "\n");
 }
    } else {
        { __koru_stdout_write("FAIL-mismatch" + "\n");
 }
    }
  }
  public static void flow2() {
    var c = main_module.none_event.handler(new none_event.Input { });
if (c != "clip.wav") {
        { __koru_stdout_write("null-nomatch" + "\n");
 }
    } else {
        { __koru_stdout_write("FAIL-null" + "\n");
 }
    }
  }
  public static void flow3() {
    var d = main_module.none_event.handler(new none_event.Input { });
if (d == "clip.wav") {
        { __koru_stdout_write("FAIL-null-eq" + "\n");
 }
    } else {
        { __koru_stdout_write("null-false" + "\n");
 }
    }
  }
  public static void flow4() {
    var s1 = main_module.word_event.handler(new word_event.Input { w = (string)("x")});
    var s2 = main_module.word_event.handler(new word_event.Input { w = (string)("x")});
if (s1 == s2) {
        { __koru_stdout_write("ident-eq" + "\n");
 }
    } else {
        { __koru_stdout_write("FAIL-ident-eq" + "\n");
 }
    }
  }
  public static void flow5() {
    var s3 = main_module.word_event.handler(new word_event.Input { w = (string)("x")});
    var s4 = main_module.word_event.handler(new word_event.Input { w = (string)("y")});
if (s3 != s4) {
        { __koru_stdout_write("ident-ne" + "\n");
 }
    } else {
        { __koru_stdout_write("FAIL-ident-ne" + "\n");
 }
    }
  }
  public static void flow6() {
    var n1 = main_module.num_event.handler(new num_event.Input { n = (long)(3)});
    var n2 = main_module.num_event.handler(new num_event.Input { n = (long)(3)});
if (n1 == n2) {
        { __koru_stdout_write("int-eq" + "\n");
 }
    } else {
        { __koru_stdout_write("FAIL-int-eq" + "\n");
 }
    }
  }
  public static void flow7() {
    var o1 = main_module.src_event.handler(new src_event.Input { name = (string)("x")});
    var s5 = main_module.word_event.handler(new word_event.Input { w = (string)("x")});
if (o1 == s5) {
        { __koru_stdout_write("opt-str-eq" + "\n");
 }
    } else {
        { __koru_stdout_write("FAIL-opt-str" + "\n");
 }
    }
  }
  public static void flow8() {
    var e = main_module.src_event.handler(new src_event.Input { name = (string)("clip.wav")});
if (e == "clip.wav" && e == "clip.wav") {
        { __koru_stdout_write("unwrap-eq" + "\n");
 }
    } else {
        { __koru_stdout_write("FAIL-unwrap" + "\n");
 }
    }
  }
  public static void flow9() {
    main_module.koru_start_event.handler(new koru_start_event.Input { });
  }
  public static void flow10() {
    main_module.koru_end_event.handler(new koru_end_event.Input { });
  }
}

static class Program {
  static void Main() {
    main_module.flow9();
    main_module.flow0();
    main_module.flow1();
    main_module.flow2();
    main_module.flow3();
    main_module.flow4();
    main_module.flow5();
    main_module.flow6();
    main_module.flow7();
    main_module.flow8();
    main_module.flow10();
  }
}

147 optional string equality

Code

Supporting Files

Actual

Expected output

Flows

Test Configuration