not_colored.zig

not_colored.zig

// for testing purposes only, a mock of the c stdlib that provides calloc and malloc backed by the
// testing allocator.  Stores last length in a global: Definitely not threadsafe.
var test_allocator_total_length: usize = undefined;

const MockedLibC = struct {
    pub fn calloc(count: usize, size: usize) ?[*]u8 {
        test_allocator_total_length = count * size;
        var slice = std.testing.allocator.alloc(u8, test_allocator_total_length) catch return null;
        const result_pointer = @ptrCast([*]u8, slice.ptr);
        @memset(result_pointer, 0, test_allocator_total_length);
        return result_pointer;
    }

    pub fn malloc(byte_length: usize) ?[*]u8 {
        test_allocator_total_length = byte_length;
        var slice = std.testing.allocator.alloc(u8, test_allocator_total_length) catch return null;
        return @ptrCast([*]u8, slice.ptr);
    }

    pub fn free(memory: [*]u8) void {
        std.testing.allocator.free(memory[0..test_allocator_total_length]);
        test_allocator_total_length = undefined;
    }
};