46 lines
1.0 KiB
Zig
46 lines
1.0 KiB
Zig
const debug = @import("std").debug;
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const assert = debug.assert;
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var argv: [*]const [*]const u8 = undefined;
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test "const slice child" {
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const strs = ([][*]const u8){
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c"one",
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c"two",
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c"three",
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};
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// TODO this should implicitly cast
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argv = @ptrCast([*]const [*]const u8, &strs);
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bar(strs.len);
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}
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fn foo(args: [][]const u8) void {
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assert(args.len == 3);
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assert(streql(args[0], "one"));
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assert(streql(args[1], "two"));
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assert(streql(args[2], "three"));
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}
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fn bar(argc: usize) void {
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const args = debug.global_allocator.alloc([]const u8, argc) catch unreachable;
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for (args) |_, i| {
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const ptr = argv[i];
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args[i] = ptr[0..strlen(ptr)];
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}
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foo(args);
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}
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fn strlen(ptr: [*]const u8) usize {
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var count: usize = 0;
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while (ptr[count] != 0) : (count += 1) {}
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return count;
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}
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fn streql(a: []const u8, b: []const u8) bool {
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if (a.len != b.len) return false;
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for (a) |item, index| {
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if (b[index] != item) return false;
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}
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return true;
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}
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