mirror of
https://github.com/ziglang/zig.git
synced 2024-11-27 07:32:44 +00:00
f7b090d707
Over the last year of using std.log in practice, it has become clear to me that having the current 8 distinct log levels does more harm than good. It is too subjective which level a given message should have which makes filtering based on log level weaker as not all messages will have been assigned the log level one might expect. Instead, more granular filtering should be achieved by leveraging the logging scope feature. Filtering based on a combination of scope and log level should be sufficiently powerful for all use-cases. Note that the self hosted compiler has already limited itself to 4 distinct log levels for many months and implemented granular filtering based on both log scope and level. This has worked very well in practice while working on the self hosted compiler.
522 lines
19 KiB
Zig
522 lines
19 KiB
Zig
const std = @import("std");
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const os = std.os;
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const tests = @import("tests.zig");
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pub fn addCases(cases: *tests.CompareOutputContext) void {
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cases.addC("hello world with libc",
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\\const c = @cImport({
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\\ // See https://github.com/ziglang/zig/issues/515
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\\ @cDefine("_NO_CRT_STDIO_INLINE", "1");
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\\ @cInclude("stdio.h");
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\\});
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\\pub export fn main(argc: c_int, argv: [*][*]u8) c_int {
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\\ _ = argc;
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\\ _ = argv;
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\\ _ = c.puts("Hello, world!");
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\\ return 0;
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\\}
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, "Hello, world!" ++ std.cstr.line_sep);
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cases.add("hello world without libc",
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\\const io = @import("std").io;
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\\
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\\pub fn main() void {
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\\ const stdout = io.getStdOut().writer();
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\\ stdout.print("Hello, world!\n{d:4} {x:3} {c}\n", .{@as(u32, 12), @as(u16, 0x12), @as(u8, 'a')}) catch unreachable;
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\\}
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, "Hello, world!\n 12 12 a\n");
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cases.addC("number literals",
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\\const std = @import("std");
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\\const builtin = @import("builtin");
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\\const is_windows = builtin.os.tag == .windows;
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\\const c = @cImport({
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\\ if (is_windows) {
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\\ // See https://github.com/ziglang/zig/issues/515
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\\ @cDefine("_NO_CRT_STDIO_INLINE", "1");
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\\ @cInclude("io.h");
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\\ @cInclude("fcntl.h");
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\\ }
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\\ @cInclude("stdio.h");
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\\});
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\\
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\\pub export fn main(argc: c_int, argv: [*][*]u8) c_int {
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\\ _ = argc;
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\\ _ = argv;
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\\ if (is_windows) {
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\\ // we want actual \n, not \r\n
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\\ _ = c._setmode(1, c._O_BINARY);
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\\ }
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\\ _ = c.printf("0: %llu\n",
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\\ @as(u64, 0));
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\\ _ = c.printf("320402575052271: %llu\n",
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\\ @as(u64, 320402575052271));
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\\ _ = c.printf("0x01236789abcdef: %llu\n",
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\\ @as(u64, 0x01236789abcdef));
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\\ _ = c.printf("0xffffffffffffffff: %llu\n",
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\\ @as(u64, 0xffffffffffffffff));
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\\ _ = c.printf("0x000000ffffffffffffffff: %llu\n",
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\\ @as(u64, 0x000000ffffffffffffffff));
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\\ _ = c.printf("0o1777777777777777777777: %llu\n",
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\\ @as(u64, 0o1777777777777777777777));
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\\ _ = c.printf("0o0000001777777777777777777777: %llu\n",
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\\ @as(u64, 0o0000001777777777777777777777));
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\\ _ = c.printf("0b1111111111111111111111111111111111111111111111111111111111111111: %llu\n",
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\\ @as(u64, 0b1111111111111111111111111111111111111111111111111111111111111111));
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\\ _ = c.printf("0b0000001111111111111111111111111111111111111111111111111111111111111111: %llu\n",
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\\ @as(u64, 0b0000001111111111111111111111111111111111111111111111111111111111111111));
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\\
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\\ _ = c.printf("\n");
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\\
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\\ _ = c.printf("0.0: %.013a\n",
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\\ @as(f64, 0.0));
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\\ _ = c.printf("0e0: %.013a\n",
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\\ @as(f64, 0e0));
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\\ _ = c.printf("0.0e0: %.013a\n",
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\\ @as(f64, 0.0e0));
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\\ _ = c.printf("000000000000000000000000000000000000000000000000000000000.0e0: %.013a\n",
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\\ @as(f64, 000000000000000000000000000000000000000000000000000000000.0e0));
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\\ _ = c.printf("0.000000000000000000000000000000000000000000000000000000000e0: %.013a\n",
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\\ @as(f64, 0.000000000000000000000000000000000000000000000000000000000e0));
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\\ _ = c.printf("0.0e000000000000000000000000000000000000000000000000000000000: %.013a\n",
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\\ @as(f64, 0.0e000000000000000000000000000000000000000000000000000000000));
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\\ _ = c.printf("1.0: %.013a\n",
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\\ @as(f64, 1.0));
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\\ _ = c.printf("10.0: %.013a\n",
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\\ @as(f64, 10.0));
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\\ _ = c.printf("10.5: %.013a\n",
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\\ @as(f64, 10.5));
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\\ _ = c.printf("10.5e5: %.013a\n",
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\\ @as(f64, 10.5e5));
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\\ _ = c.printf("10.5e+5: %.013a\n",
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\\ @as(f64, 10.5e+5));
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\\ _ = c.printf("50.0e-2: %.013a\n",
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\\ @as(f64, 50.0e-2));
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\\ _ = c.printf("50e-2: %.013a\n",
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\\ @as(f64, 50e-2));
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\\
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\\ _ = c.printf("\n");
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\\
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\\ _ = c.printf("0x1.0: %.013a\n",
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\\ @as(f64, 0x1.0));
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\\ _ = c.printf("0x10.0: %.013a\n",
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\\ @as(f64, 0x10.0));
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\\ _ = c.printf("0x100.0: %.013a\n",
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\\ @as(f64, 0x100.0));
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\\ _ = c.printf("0x103.0: %.013a\n",
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\\ @as(f64, 0x103.0));
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\\ _ = c.printf("0x103.7: %.013a\n",
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\\ @as(f64, 0x103.7));
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\\ _ = c.printf("0x103.70: %.013a\n",
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\\ @as(f64, 0x103.70));
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\\ _ = c.printf("0x103.70p4: %.013a\n",
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\\ @as(f64, 0x103.70p4));
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\\ _ = c.printf("0x103.70p5: %.013a\n",
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\\ @as(f64, 0x103.70p5));
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\\ _ = c.printf("0x103.70p+5: %.013a\n",
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\\ @as(f64, 0x103.70p+5));
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\\ _ = c.printf("0x103.70p-5: %.013a\n",
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\\ @as(f64, 0x103.70p-5));
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\\
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\\ return 0;
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\\}
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,
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\\0: 0
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\\320402575052271: 320402575052271
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\\0x01236789abcdef: 320402575052271
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\\0xffffffffffffffff: 18446744073709551615
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\\0x000000ffffffffffffffff: 18446744073709551615
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\\0o1777777777777777777777: 18446744073709551615
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\\0o0000001777777777777777777777: 18446744073709551615
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\\0b1111111111111111111111111111111111111111111111111111111111111111: 18446744073709551615
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\\0b0000001111111111111111111111111111111111111111111111111111111111111111: 18446744073709551615
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\\
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\\0.0: 0x0.0000000000000p+0
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\\0e0: 0x0.0000000000000p+0
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\\0.0e0: 0x0.0000000000000p+0
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\\000000000000000000000000000000000000000000000000000000000.0e0: 0x0.0000000000000p+0
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\\0.000000000000000000000000000000000000000000000000000000000e0: 0x0.0000000000000p+0
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\\0.0e000000000000000000000000000000000000000000000000000000000: 0x0.0000000000000p+0
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\\1.0: 0x1.0000000000000p+0
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\\10.0: 0x1.4000000000000p+3
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\\10.5: 0x1.5000000000000p+3
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\\10.5e5: 0x1.0059000000000p+20
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\\10.5e+5: 0x1.0059000000000p+20
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\\50.0e-2: 0x1.0000000000000p-1
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\\50e-2: 0x1.0000000000000p-1
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\\
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\\0x1.0: 0x1.0000000000000p+0
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\\0x10.0: 0x1.0000000000000p+4
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\\0x100.0: 0x1.0000000000000p+8
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\\0x103.0: 0x1.0300000000000p+8
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\\0x103.7: 0x1.0370000000000p+8
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\\0x103.70: 0x1.0370000000000p+8
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\\0x103.70p4: 0x1.0370000000000p+12
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\\0x103.70p5: 0x1.0370000000000p+13
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\\0x103.70p+5: 0x1.0370000000000p+13
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\\0x103.70p-5: 0x1.0370000000000p+3
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\\
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);
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cases.add("order-independent declarations",
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\\const io = @import("std").io;
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\\const z = io.stdin_fileno;
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\\const x : @TypeOf(y) = 1234;
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\\const y : u16 = 5678;
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\\pub fn main() void {
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\\ var x_local : i32 = print_ok(x);
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\\ _ = x_local;
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\\}
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\\fn print_ok(val: @TypeOf(x)) @TypeOf(foo) {
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\\ _ = val;
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\\ const stdout = io.getStdOut().writer();
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\\ stdout.print("OK\n", .{}) catch unreachable;
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\\ return 0;
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\\}
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\\const foo : i32 = 0;
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, "OK\n");
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cases.addC("expose function pointer to C land",
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\\const c = @cImport(@cInclude("stdlib.h"));
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\\
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\\export fn compare_fn(a: ?*const c_void, b: ?*const c_void) c_int {
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\\ const a_int = @ptrCast(*const i32, @alignCast(@alignOf(i32), a));
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\\ const b_int = @ptrCast(*const i32, @alignCast(@alignOf(i32), b));
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\\ if (a_int.* < b_int.*) {
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\\ return -1;
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\\ } else if (a_int.* > b_int.*) {
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\\ return 1;
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\\ } else {
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\\ return 0;
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\\ }
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\\}
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\\
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\\pub export fn main() c_int {
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\\ var array = [_]u32{ 1, 7, 3, 2, 0, 9, 4, 8, 6, 5 };
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\\
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\\ c.qsort(@ptrCast(?*c_void, &array), @intCast(c_ulong, array.len), @sizeOf(i32), compare_fn);
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\\
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\\ for (array) |item, i| {
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\\ if (item != i) {
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\\ c.abort();
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\\ }
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\\ }
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\\
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\\ return 0;
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\\}
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, "");
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cases.addC("casting between float and integer types",
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\\const std = @import("std");
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\\const builtin = @import("builtin");
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\\const is_windows = builtin.os.tag == .windows;
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\\const c = @cImport({
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\\ if (is_windows) {
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\\ // See https://github.com/ziglang/zig/issues/515
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\\ @cDefine("_NO_CRT_STDIO_INLINE", "1");
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\\ @cInclude("io.h");
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\\ @cInclude("fcntl.h");
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\\ }
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\\ @cInclude("stdio.h");
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\\});
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\\
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\\pub export fn main(argc: c_int, argv: [*][*]u8) c_int {
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\\ _ = argc;
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\\ _ = argv;
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\\ if (is_windows) {
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\\ // we want actual \n, not \r\n
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\\ _ = c._setmode(1, c._O_BINARY);
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\\ }
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\\ const small: f32 = 3.25;
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\\ const x: f64 = small;
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\\ const y = @floatToInt(i32, x);
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\\ const z = @intToFloat(f64, y);
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\\ _ = c.printf("%.2f\n%d\n%.2f\n%.2f\n", x, y, z, @as(f64, -0.4));
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\\ return 0;
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\\}
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, "3.25\n3\n3.00\n-0.40\n");
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cases.add("same named methods in incomplete struct",
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\\const io = @import("std").io;
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\\
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\\const Foo = struct {
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\\ field1: Bar,
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\\
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\\ fn method(a: *const Foo) bool {
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\\ _ = a;
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\\ return true;
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\\ }
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\\};
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\\
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\\const Bar = struct {
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\\ field2: i32,
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\\
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\\ fn method(b: *const Bar) bool {
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\\ _ = b;
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\\ return true;
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\\ }
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\\};
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\\
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\\pub fn main() void {
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\\ const bar = Bar {.field2 = 13,};
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\\ const foo = Foo {.field1 = bar,};
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\\ const stdout = io.getStdOut().writer();
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\\ if (!foo.method()) {
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\\ stdout.print("BAD\n", .{}) catch unreachable;
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\\ }
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\\ if (!bar.method()) {
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\\ stdout.print("BAD\n", .{}) catch unreachable;
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\\ }
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\\ stdout.print("OK\n", .{}) catch unreachable;
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\\}
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, "OK\n");
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cases.add("defer with only fallthrough",
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\\const io = @import("std").io;
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\\pub fn main() void {
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\\ const stdout = io.getStdOut().writer();
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\\ stdout.print("before\n", .{}) catch unreachable;
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\\ defer stdout.print("defer1\n", .{}) catch unreachable;
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\\ defer stdout.print("defer2\n", .{}) catch unreachable;
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\\ defer stdout.print("defer3\n", .{}) catch unreachable;
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\\ stdout.print("after\n", .{}) catch unreachable;
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\\}
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, "before\nafter\ndefer3\ndefer2\ndefer1\n");
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cases.add("defer with return",
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\\const io = @import("std").io;
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\\const os = @import("std").os;
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\\pub fn main() void {
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\\ const stdout = io.getStdOut().writer();
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\\ stdout.print("before\n", .{}) catch unreachable;
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\\ defer stdout.print("defer1\n", .{}) catch unreachable;
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\\ defer stdout.print("defer2\n", .{}) catch unreachable;
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\\ var args_it = @import("std").process.args();
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\\ if (args_it.skip() and !args_it.skip()) return;
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\\ defer stdout.print("defer3\n", .{}) catch unreachable;
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\\ stdout.print("after\n", .{}) catch unreachable;
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\\}
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, "before\ndefer2\ndefer1\n");
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cases.add("errdefer and it fails",
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\\const io = @import("std").io;
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\\pub fn main() void {
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\\ do_test() catch return;
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\\}
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\\fn do_test() !void {
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\\ const stdout = io.getStdOut().writer();
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\\ stdout.print("before\n", .{}) catch unreachable;
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\\ defer stdout.print("defer1\n", .{}) catch unreachable;
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\\ errdefer stdout.print("deferErr\n", .{}) catch unreachable;
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\\ try its_gonna_fail();
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\\ defer stdout.print("defer3\n", .{}) catch unreachable;
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\\ stdout.print("after\n", .{}) catch unreachable;
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\\}
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\\fn its_gonna_fail() !void {
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\\ return error.IToldYouItWouldFail;
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\\}
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, "before\ndeferErr\ndefer1\n");
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cases.add("errdefer and it passes",
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\\const io = @import("std").io;
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\\pub fn main() void {
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\\ do_test() catch return;
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\\}
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\\fn do_test() !void {
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\\ const stdout = io.getStdOut().writer();
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\\ stdout.print("before\n", .{}) catch unreachable;
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\\ defer stdout.print("defer1\n", .{}) catch unreachable;
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\\ errdefer stdout.print("deferErr\n", .{}) catch unreachable;
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\\ try its_gonna_pass();
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\\ defer stdout.print("defer3\n", .{}) catch unreachable;
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\\ stdout.print("after\n", .{}) catch unreachable;
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\\}
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\\fn its_gonna_pass() anyerror!void { }
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, "before\nafter\ndefer3\ndefer1\n");
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cases.addCase(x: {
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var tc = cases.create("@embedFile",
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\\const foo_txt = @embedFile("foo.txt");
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\\const io = @import("std").io;
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\\
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\\pub fn main() void {
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\\ const stdout = io.getStdOut().writer();
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\\ stdout.print(foo_txt, .{}) catch unreachable;
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\\}
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, "1234\nabcd\n");
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tc.addSourceFile("foo.txt", "1234\nabcd\n");
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break :x tc;
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});
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cases.addCase(x: {
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var tc = cases.create("parsing args",
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\\const std = @import("std");
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\\const io = std.io;
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\\const os = std.os;
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\\const allocator = std.testing.allocator;
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\\
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\\pub fn main() !void {
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\\ var args_it = std.process.args();
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\\ const stdout = io.getStdOut().writer();
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\\ var index: usize = 0;
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\\ _ = args_it.skip();
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\\ while (args_it.next(allocator)) |arg_or_err| : (index += 1) {
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\\ const arg = try arg_or_err;
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\\ try stdout.print("{}: {s}\n", .{index, arg});
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\\ }
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\\}
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,
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\\0: first arg
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\\1: 'a' 'b' \
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\\2: bare
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\\3: ba""re
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\\4: "
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\\5: last arg
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\\
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);
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tc.setCommandLineArgs(&[_][]const u8{
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"first arg",
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"'a' 'b' \\",
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"bare",
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"ba\"\"re",
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"\"",
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"last arg",
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});
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break :x tc;
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});
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cases.addCase(x: {
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var tc = cases.create("parsing args new API",
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\\const std = @import("std");
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\\const io = std.io;
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\\const os = std.os;
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\\const allocator = std.testing.allocator;
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\\
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\\pub fn main() !void {
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\\ var args_it = std.process.args();
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\\ const stdout = io.getStdOut().writer();
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\\ var index: usize = 0;
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\\ _ = args_it.skip();
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\\ while (args_it.next(allocator)) |arg_or_err| : (index += 1) {
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\\ const arg = try arg_or_err;
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\\ try stdout.print("{}: {s}\n", .{index, arg});
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\\ }
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\\}
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,
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\\0: first arg
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\\1: 'a' 'b' \
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\\2: bare
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\\3: ba""re
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\\4: "
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\\5: last arg
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\\
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);
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tc.setCommandLineArgs(&[_][]const u8{
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"first arg",
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"'a' 'b' \\",
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"bare",
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"ba\"\"re",
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"\"",
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"last arg",
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});
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break :x tc;
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});
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// It is required to override the log function in order to print to stdout instead of stderr
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|
cases.add("std.log per scope log level override",
|
|
\\const std = @import("std");
|
|
\\
|
|
\\pub const log_level: std.log.Level = .debug;
|
|
\\
|
|
\\pub const scope_levels = [_]std.log.ScopeLevel{
|
|
\\ .{ .scope = .a, .level = .warn },
|
|
\\ .{ .scope = .c, .level = .err },
|
|
\\};
|
|
\\
|
|
\\const loga = std.log.scoped(.a);
|
|
\\const logb = std.log.scoped(.b);
|
|
\\const logc = std.log.scoped(.c);
|
|
\\
|
|
\\pub fn main() !void {
|
|
\\ loga.debug("", .{});
|
|
\\ logb.debug("", .{});
|
|
\\ logc.debug("", .{});
|
|
\\
|
|
\\ loga.info("", .{});
|
|
\\ logb.info("", .{});
|
|
\\ logc.info("", .{});
|
|
\\
|
|
\\ loga.warn("", .{});
|
|
\\ logb.warn("", .{});
|
|
\\ logc.warn("", .{});
|
|
\\
|
|
\\ loga.err("", .{});
|
|
\\ logb.err("", .{});
|
|
\\ logc.err("", .{});
|
|
\\}
|
|
\\pub fn log(
|
|
\\ comptime level: std.log.Level,
|
|
\\ comptime scope: @TypeOf(.EnumLiteral),
|
|
\\ comptime format: []const u8,
|
|
\\ args: anytype,
|
|
\\) void {
|
|
\\ const level_txt = comptime level.asText();
|
|
\\ const prefix2 = if (scope == .default) ": " else "(" ++ @tagName(scope) ++ "):";
|
|
\\ const stdout = std.io.getStdOut().writer();
|
|
\\ nosuspend stdout.print(level_txt ++ prefix2 ++ format ++ "\n", args) catch return;
|
|
\\}
|
|
,
|
|
\\debug(b):
|
|
\\info(b):
|
|
\\warning(a):
|
|
\\warning(b):
|
|
\\error(a):
|
|
\\error(b):
|
|
\\error(c):
|
|
\\
|
|
);
|
|
|
|
// It is required to override the log function in order to print to stdout instead of stderr
|
|
cases.add("std.heap.LoggingAllocator logs to std.log",
|
|
\\const std = @import("std");
|
|
\\
|
|
\\pub const log_level: std.log.Level = .debug;
|
|
\\
|
|
\\pub fn main() !void {
|
|
\\ var allocator_buf: [10]u8 = undefined;
|
|
\\ var fixedBufferAllocator = std.mem.validationWrap(std.heap.FixedBufferAllocator.init(&allocator_buf));
|
|
\\ const allocator = &std.heap.loggingAllocator(&fixedBufferAllocator.allocator).allocator;
|
|
\\
|
|
\\ var a = try allocator.alloc(u8, 10);
|
|
\\ a = allocator.shrink(a, 5);
|
|
\\ try std.testing.expect(a.len == 5);
|
|
\\ try std.testing.expectError(error.OutOfMemory, allocator.resize(a, 20));
|
|
\\ allocator.free(a);
|
|
\\}
|
|
\\
|
|
\\pub fn log(
|
|
\\ comptime level: std.log.Level,
|
|
\\ comptime scope: @TypeOf(.EnumLiteral),
|
|
\\ comptime format: []const u8,
|
|
\\ args: anytype,
|
|
\\) void {
|
|
\\ const level_txt = comptime level.asText();
|
|
\\ const prefix2 = if (scope == .default) ": " else "(" ++ @tagName(scope) ++ "): ";
|
|
\\ const stdout = std.io.getStdOut().writer();
|
|
\\ nosuspend stdout.print(level_txt ++ prefix2 ++ format ++ "\n", args) catch return;
|
|
\\}
|
|
,
|
|
\\debug: alloc - success - len: 10, ptr_align: 1, len_align: 0
|
|
\\debug: shrink - success - 10 to 5, len_align: 0, buf_align: 1
|
|
\\error: expand - failure: OutOfMemory - 5 to 20, len_align: 0, buf_align: 1
|
|
\\debug: free - success - len: 5
|
|
\\
|
|
);
|
|
}
|