1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
|
const std = @import("std");
const Character = @import("character.zig").Character;
const Self = @This();
charset: [256]bool = std.mem.zeroes([256]bool),
pub inline fn is_set(self: *const Self, c: usize) bool {
return self.charset[c];
}
pub inline fn set(self: *Self, c: usize) void {
self.charset[c] = true;
}
pub inline fn reset(self: *Self, c: usize) void {
self.charset[c] = false;
}
pub inline fn set_if(self: *Self, c: usize, flag: bool) void {
self.charset[c] = self.charset[c] or flag;
}
pub fn format(
self: *const Self,
comptime fmt: []const u8,
options: std.fmt.FormatOptions,
writer: anytype,
) !void {
_ = fmt;
_ = options;
try writer.print("{{ ", .{});
for (self.charset, 0..) |is_first, index| {
if (is_first) {
if (index == Character.EPSILON) {
try writer.print("{} ", .{Character { .epsilon = void{} }});
} else if (index == Character.END) {
try writer.print("$ ", .{});
} else {
try writer.print("'{c}' ", .{@as(u8, @truncate(index))});
}
}
}
try writer.print("}}", .{});
}
pub fn expect(self: *const Self, expected: []const u8) !void {
var matrix = std.mem.zeroes([255]bool);
for (expected) |c| {
matrix[c] = true;
}
for (matrix, 0..) |contained, index| {
if (self.is_set(index) != contained) {
std.debug.print("expected {{ ", .{});
for (expected) |c| {
if (c == Character.EPSILON) {
std.debug.print("{} ", .{Character { .epsilon = void{} }});
} else if (c == Character.END) {
std.debug.print("$ ", .{});
} else {
std.debug.print("'{c}' ", .{c});
}
}
std.debug.print("}} but got {} (", .{self});
if (index == Character.EPSILON) {
std.debug.print("{}", .{Character { .epsilon = void{} }});
} else if (index == Character.END) {
std.debug.print("$", .{});
} else {
std.debug.print("'{c}'", .{@as(u8, @truncate(index))});
}
if (contained) {
std.debug.print(" missing)\n", .{});
} else {
std.debug.print(" not expected)\n", .{});
}
return error.ExpectEqualError;
}
}
}
|
