mirror of
https://github.com/ziglang/zig.git
synced 2024-11-13 23:52:57 +00:00
d11bbde5f9
This commit reworks how anonymous struct literals and tuples work.
Previously, an untyped anonymous struct literal
(e.g. `const x = .{ .a = 123 }`) was given an "anonymous struct type",
which is a special kind of struct which coerces using structural
equivalence. This mechanism was a holdover from before we used
RLS / result types as the primary mechanism of type inference. This
commit changes the language so that the type assigned here is a "normal"
struct type. It uses a form of equivalence based on the AST node and the
type's structure, much like a reified (`@Type`) type.
Additionally, tuples have been simplified. The distinction between
"simple" and "complex" tuple types is eliminated. All tuples, even those
explicitly declared using `struct { ... }` syntax, use structural
equivalence, and do not undergo staged type resolution. Tuples are very
restricted: they cannot have non-`auto` layouts, cannot have aligned
fields, and cannot have default values with the exception of `comptime`
fields. Tuples currently do not have optimized layout, but this can be
changed in the future.
This change simplifies the language, and fixes some problematic
coercions through pointers which led to unintuitive behavior.
Resolves: #16865
548 lines
20 KiB
Zig
548 lines
20 KiB
Zig
const std = @import("std");
|
|
const os = std.os;
|
|
const tests = @import("tests.zig");
|
|
|
|
pub fn addCases(cases: *tests.CompareOutputContext) void {
|
|
cases.addC("hello world with libc",
|
|
\\const c = @cImport({
|
|
\\ // See https://github.com/ziglang/zig/issues/515
|
|
\\ @cDefine("_NO_CRT_STDIO_INLINE", "1");
|
|
\\ @cInclude("stdio.h");
|
|
\\});
|
|
\\pub export fn main(argc: c_int, argv: [*][*]u8) c_int {
|
|
\\ _ = argc;
|
|
\\ _ = argv;
|
|
\\ _ = c.puts("Hello, world!");
|
|
\\ return 0;
|
|
\\}
|
|
, "Hello, world!" ++ if (@import("builtin").os.tag == .windows) "\r\n" else "\n");
|
|
|
|
cases.add("hello world without libc",
|
|
\\const io = @import("std").io;
|
|
\\
|
|
\\pub fn main() void {
|
|
\\ const stdout = io.getStdOut().writer();
|
|
\\ stdout.print("Hello, world!\n{d:4} {x:3} {c}\n", .{@as(u32, 12), @as(u16, 0x12), @as(u8, 'a')}) catch unreachable;
|
|
\\}
|
|
, "Hello, world!\n 12 12 a\n");
|
|
|
|
cases.addC("number literals",
|
|
\\const std = @import("std");
|
|
\\const builtin = @import("builtin");
|
|
\\const is_windows = builtin.os.tag == .windows;
|
|
\\const c = @cImport({
|
|
\\ if (is_windows) {
|
|
\\ // See https://github.com/ziglang/zig/issues/515
|
|
\\ @cDefine("_NO_CRT_STDIO_INLINE", "1");
|
|
\\ @cInclude("io.h");
|
|
\\ @cInclude("fcntl.h");
|
|
\\ }
|
|
\\ @cInclude("stdio.h");
|
|
\\});
|
|
\\
|
|
\\pub export fn main(argc: c_int, argv: [*][*]u8) c_int {
|
|
\\ _ = argc;
|
|
\\ _ = argv;
|
|
\\ if (is_windows) {
|
|
\\ // we want actual \n, not \r\n
|
|
\\ _ = c._setmode(1, c._O_BINARY);
|
|
\\ }
|
|
\\ _ = c.printf("0: %llu\n",
|
|
\\ @as(u64, 0));
|
|
\\ _ = c.printf("320402575052271: %llu\n",
|
|
\\ @as(u64, 320402575052271));
|
|
\\ _ = c.printf("0x01236789abcdef: %llu\n",
|
|
\\ @as(u64, 0x01236789abcdef));
|
|
\\ _ = c.printf("0xffffffffffffffff: %llu\n",
|
|
\\ @as(u64, 0xffffffffffffffff));
|
|
\\ _ = c.printf("0x000000ffffffffffffffff: %llu\n",
|
|
\\ @as(u64, 0x000000ffffffffffffffff));
|
|
\\ _ = c.printf("0o1777777777777777777777: %llu\n",
|
|
\\ @as(u64, 0o1777777777777777777777));
|
|
\\ _ = c.printf("0o0000001777777777777777777777: %llu\n",
|
|
\\ @as(u64, 0o0000001777777777777777777777));
|
|
\\ _ = c.printf("0b1111111111111111111111111111111111111111111111111111111111111111: %llu\n",
|
|
\\ @as(u64, 0b1111111111111111111111111111111111111111111111111111111111111111));
|
|
\\ _ = c.printf("0b0000001111111111111111111111111111111111111111111111111111111111111111: %llu\n",
|
|
\\ @as(u64, 0b0000001111111111111111111111111111111111111111111111111111111111111111));
|
|
\\
|
|
\\ _ = c.printf("\n");
|
|
\\
|
|
\\ _ = c.printf("0.0: %.013a\n",
|
|
\\ @as(f64, 0.0));
|
|
\\ _ = c.printf("0e0: %.013a\n",
|
|
\\ @as(f64, 0e0));
|
|
\\ _ = c.printf("0.0e0: %.013a\n",
|
|
\\ @as(f64, 0.0e0));
|
|
\\ _ = c.printf("000000000000000000000000000000000000000000000000000000000.0e0: %.013a\n",
|
|
\\ @as(f64, 0.0e0));
|
|
\\ _ = c.printf("0.000000000000000000000000000000000000000000000000000000000e0: %.013a\n",
|
|
\\ @as(f64, 0.000000000000000000000000000000000000000000000000000000000e0));
|
|
\\ _ = c.printf("0.0e000000000000000000000000000000000000000000000000000000000: %.013a\n",
|
|
\\ @as(f64, 0.0e000000000000000000000000000000000000000000000000000000000));
|
|
\\ _ = c.printf("1.0: %.013a\n",
|
|
\\ @as(f64, 1.0));
|
|
\\ _ = c.printf("10.0: %.013a\n",
|
|
\\ @as(f64, 10.0));
|
|
\\ _ = c.printf("10.5: %.013a\n",
|
|
\\ @as(f64, 10.5));
|
|
\\ _ = c.printf("10.5e5: %.013a\n",
|
|
\\ @as(f64, 10.5e5));
|
|
\\ _ = c.printf("10.5e+5: %.013a\n",
|
|
\\ @as(f64, 10.5e+5));
|
|
\\ _ = c.printf("50.0e-2: %.013a\n",
|
|
\\ @as(f64, 50.0e-2));
|
|
\\ _ = c.printf("50e-2: %.013a\n",
|
|
\\ @as(f64, 50e-2));
|
|
\\
|
|
\\ _ = c.printf("\n");
|
|
\\
|
|
\\ _ = c.printf("0x1.0: %.013a\n",
|
|
\\ @as(f64, 0x1.0));
|
|
\\ _ = c.printf("0x10.0: %.013a\n",
|
|
\\ @as(f64, 0x10.0));
|
|
\\ _ = c.printf("0x100.0: %.013a\n",
|
|
\\ @as(f64, 0x100.0));
|
|
\\ _ = c.printf("0x103.0: %.013a\n",
|
|
\\ @as(f64, 0x103.0));
|
|
\\ _ = c.printf("0x103.7: %.013a\n",
|
|
\\ @as(f64, 0x103.7));
|
|
\\ _ = c.printf("0x103.70: %.013a\n",
|
|
\\ @as(f64, 0x103.70));
|
|
\\ _ = c.printf("0x103.70p4: %.013a\n",
|
|
\\ @as(f64, 0x103.70p4));
|
|
\\ _ = c.printf("0x103.70p5: %.013a\n",
|
|
\\ @as(f64, 0x103.70p5));
|
|
\\ _ = c.printf("0x103.70p+5: %.013a\n",
|
|
\\ @as(f64, 0x103.70p+5));
|
|
\\ _ = c.printf("0x103.70p-5: %.013a\n",
|
|
\\ @as(f64, 0x103.70p-5));
|
|
\\
|
|
\\ return 0;
|
|
\\}
|
|
,
|
|
\\0: 0
|
|
\\320402575052271: 320402575052271
|
|
\\0x01236789abcdef: 320402575052271
|
|
\\0xffffffffffffffff: 18446744073709551615
|
|
\\0x000000ffffffffffffffff: 18446744073709551615
|
|
\\0o1777777777777777777777: 18446744073709551615
|
|
\\0o0000001777777777777777777777: 18446744073709551615
|
|
\\0b1111111111111111111111111111111111111111111111111111111111111111: 18446744073709551615
|
|
\\0b0000001111111111111111111111111111111111111111111111111111111111111111: 18446744073709551615
|
|
\\
|
|
\\0.0: 0x0.0000000000000p+0
|
|
\\0e0: 0x0.0000000000000p+0
|
|
\\0.0e0: 0x0.0000000000000p+0
|
|
\\000000000000000000000000000000000000000000000000000000000.0e0: 0x0.0000000000000p+0
|
|
\\0.000000000000000000000000000000000000000000000000000000000e0: 0x0.0000000000000p+0
|
|
\\0.0e000000000000000000000000000000000000000000000000000000000: 0x0.0000000000000p+0
|
|
\\1.0: 0x1.0000000000000p+0
|
|
\\10.0: 0x1.4000000000000p+3
|
|
\\10.5: 0x1.5000000000000p+3
|
|
\\10.5e5: 0x1.0059000000000p+20
|
|
\\10.5e+5: 0x1.0059000000000p+20
|
|
\\50.0e-2: 0x1.0000000000000p-1
|
|
\\50e-2: 0x1.0000000000000p-1
|
|
\\
|
|
\\0x1.0: 0x1.0000000000000p+0
|
|
\\0x10.0: 0x1.0000000000000p+4
|
|
\\0x100.0: 0x1.0000000000000p+8
|
|
\\0x103.0: 0x1.0300000000000p+8
|
|
\\0x103.7: 0x1.0370000000000p+8
|
|
\\0x103.70: 0x1.0370000000000p+8
|
|
\\0x103.70p4: 0x1.0370000000000p+12
|
|
\\0x103.70p5: 0x1.0370000000000p+13
|
|
\\0x103.70p+5: 0x1.0370000000000p+13
|
|
\\0x103.70p-5: 0x1.0370000000000p+3
|
|
\\
|
|
);
|
|
|
|
cases.add("order-independent declarations",
|
|
\\const io = @import("std").io;
|
|
\\const z = io.stdin_fileno;
|
|
\\const x : @TypeOf(y) = 1234;
|
|
\\const y : u16 = 5678;
|
|
\\pub fn main() void {
|
|
\\ var x_local : i32 = print_ok(x);
|
|
\\ _ = &x_local;
|
|
\\}
|
|
\\fn print_ok(val: @TypeOf(x)) @TypeOf(foo) {
|
|
\\ _ = val;
|
|
\\ const stdout = io.getStdOut().writer();
|
|
\\ stdout.print("OK\n", .{}) catch unreachable;
|
|
\\ return 0;
|
|
\\}
|
|
\\const foo : i32 = 0;
|
|
, "OK\n");
|
|
|
|
cases.addC("expose function pointer to C land",
|
|
\\const c = @cImport(@cInclude("stdlib.h"));
|
|
\\
|
|
\\export fn compare_fn(a: ?*const anyopaque, b: ?*const anyopaque) c_int {
|
|
\\ const a_int: *const i32 = @ptrCast(@alignCast(a));
|
|
\\ const b_int: *const i32 = @ptrCast(@alignCast(b));
|
|
\\ if (a_int.* < b_int.*) {
|
|
\\ return -1;
|
|
\\ } else if (a_int.* > b_int.*) {
|
|
\\ return 1;
|
|
\\ } else {
|
|
\\ return 0;
|
|
\\ }
|
|
\\}
|
|
\\
|
|
\\pub export fn main() c_int {
|
|
\\ var array = [_]u32{ 1, 7, 3, 2, 0, 9, 4, 8, 6, 5 };
|
|
\\
|
|
\\ c.qsort(@ptrCast(&array), @intCast(array.len), @sizeOf(i32), compare_fn);
|
|
\\
|
|
\\ for (array, 0..) |item, i| {
|
|
\\ if (item != i) {
|
|
\\ c.abort();
|
|
\\ }
|
|
\\ }
|
|
\\
|
|
\\ return 0;
|
|
\\}
|
|
, "");
|
|
|
|
cases.addC("casting between float and integer types",
|
|
\\const std = @import("std");
|
|
\\const builtin = @import("builtin");
|
|
\\const is_windows = builtin.os.tag == .windows;
|
|
\\const c = @cImport({
|
|
\\ if (is_windows) {
|
|
\\ // See https://github.com/ziglang/zig/issues/515
|
|
\\ @cDefine("_NO_CRT_STDIO_INLINE", "1");
|
|
\\ @cInclude("io.h");
|
|
\\ @cInclude("fcntl.h");
|
|
\\ }
|
|
\\ @cInclude("stdio.h");
|
|
\\});
|
|
\\
|
|
\\pub export fn main(argc: c_int, argv: [*][*]u8) c_int {
|
|
\\ _ = argc;
|
|
\\ _ = argv;
|
|
\\ if (is_windows) {
|
|
\\ // we want actual \n, not \r\n
|
|
\\ _ = c._setmode(1, c._O_BINARY);
|
|
\\ }
|
|
\\ const small: f32 = 3.25;
|
|
\\ const x: f64 = small;
|
|
\\ const y: i32 = @intFromFloat(x);
|
|
\\ const z: f64 = @floatFromInt(y);
|
|
\\ _ = c.printf("%.2f\n%d\n%.2f\n%.2f\n", x, y, z, @as(f64, -0.4));
|
|
\\ return 0;
|
|
\\}
|
|
, "3.25\n3\n3.00\n-0.40\n");
|
|
|
|
cases.add("same named methods in incomplete struct",
|
|
\\const io = @import("std").io;
|
|
\\
|
|
\\const Foo = struct {
|
|
\\ field1: Bar,
|
|
\\
|
|
\\ fn method(a: *const Foo) bool {
|
|
\\ _ = a;
|
|
\\ return true;
|
|
\\ }
|
|
\\};
|
|
\\
|
|
\\const Bar = struct {
|
|
\\ field2: i32,
|
|
\\
|
|
\\ fn method(b: *const Bar) bool {
|
|
\\ _ = b;
|
|
\\ return true;
|
|
\\ }
|
|
\\};
|
|
\\
|
|
\\pub fn main() void {
|
|
\\ const bar = Bar {.field2 = 13,};
|
|
\\ const foo = Foo {.field1 = bar,};
|
|
\\ const stdout = io.getStdOut().writer();
|
|
\\ if (!foo.method()) {
|
|
\\ stdout.print("BAD\n", .{}) catch unreachable;
|
|
\\ }
|
|
\\ if (!bar.method()) {
|
|
\\ stdout.print("BAD\n", .{}) catch unreachable;
|
|
\\ }
|
|
\\ stdout.print("OK\n", .{}) catch unreachable;
|
|
\\}
|
|
, "OK\n");
|
|
|
|
cases.add("defer with only fallthrough",
|
|
\\const io = @import("std").io;
|
|
\\pub fn main() void {
|
|
\\ const stdout = io.getStdOut().writer();
|
|
\\ stdout.print("before\n", .{}) catch unreachable;
|
|
\\ defer stdout.print("defer1\n", .{}) catch unreachable;
|
|
\\ defer stdout.print("defer2\n", .{}) catch unreachable;
|
|
\\ defer stdout.print("defer3\n", .{}) catch unreachable;
|
|
\\ stdout.print("after\n", .{}) catch unreachable;
|
|
\\}
|
|
, "before\nafter\ndefer3\ndefer2\ndefer1\n");
|
|
|
|
cases.add("defer with return",
|
|
\\const io = @import("std").io;
|
|
\\const os = @import("std").os;
|
|
\\pub fn main() void {
|
|
\\ const stdout = io.getStdOut().writer();
|
|
\\ stdout.print("before\n", .{}) catch unreachable;
|
|
\\ defer stdout.print("defer1\n", .{}) catch unreachable;
|
|
\\ defer stdout.print("defer2\n", .{}) catch unreachable;
|
|
\\ var gpa: @import("std").heap.GeneralPurposeAllocator(.{}) = .init;
|
|
\\ defer _ = gpa.deinit();
|
|
\\ var arena = @import("std").heap.ArenaAllocator.init(gpa.allocator());
|
|
\\ defer arena.deinit();
|
|
\\ var args_it = @import("std").process.argsWithAllocator(arena.allocator()) catch unreachable;
|
|
\\ if (args_it.skip() and !args_it.skip()) return;
|
|
\\ defer stdout.print("defer3\n", .{}) catch unreachable;
|
|
\\ stdout.print("after\n", .{}) catch unreachable;
|
|
\\}
|
|
, "before\ndefer2\ndefer1\n");
|
|
|
|
cases.add("errdefer and it fails",
|
|
\\const io = @import("std").io;
|
|
\\pub fn main() void {
|
|
\\ do_test() catch return;
|
|
\\}
|
|
\\fn do_test() !void {
|
|
\\ const stdout = io.getStdOut().writer();
|
|
\\ stdout.print("before\n", .{}) catch unreachable;
|
|
\\ defer stdout.print("defer1\n", .{}) catch unreachable;
|
|
\\ errdefer stdout.print("deferErr\n", .{}) catch unreachable;
|
|
\\ try its_gonna_fail();
|
|
\\ defer stdout.print("defer3\n", .{}) catch unreachable;
|
|
\\ stdout.print("after\n", .{}) catch unreachable;
|
|
\\}
|
|
\\fn its_gonna_fail() !void {
|
|
\\ return error.IToldYouItWouldFail;
|
|
\\}
|
|
, "before\ndeferErr\ndefer1\n");
|
|
|
|
cases.add("errdefer and it passes",
|
|
\\const io = @import("std").io;
|
|
\\pub fn main() void {
|
|
\\ do_test() catch return;
|
|
\\}
|
|
\\fn do_test() !void {
|
|
\\ const stdout = io.getStdOut().writer();
|
|
\\ stdout.print("before\n", .{}) catch unreachable;
|
|
\\ defer stdout.print("defer1\n", .{}) catch unreachable;
|
|
\\ errdefer stdout.print("deferErr\n", .{}) catch unreachable;
|
|
\\ try its_gonna_pass();
|
|
\\ defer stdout.print("defer3\n", .{}) catch unreachable;
|
|
\\ stdout.print("after\n", .{}) catch unreachable;
|
|
\\}
|
|
\\fn its_gonna_pass() anyerror!void { }
|
|
, "before\nafter\ndefer3\ndefer1\n");
|
|
|
|
cases.addCase(x: {
|
|
var tc = cases.create("@embedFile",
|
|
\\const foo_txt = @embedFile("foo.txt");
|
|
\\const io = @import("std").io;
|
|
\\
|
|
\\pub fn main() void {
|
|
\\ const stdout = io.getStdOut().writer();
|
|
\\ stdout.print(foo_txt, .{}) catch unreachable;
|
|
\\}
|
|
, "1234\nabcd\n");
|
|
|
|
tc.addSourceFile("foo.txt", "1234\nabcd\n");
|
|
|
|
break :x tc;
|
|
});
|
|
|
|
cases.addCase(x: {
|
|
var tc = cases.create("parsing args",
|
|
\\const std = @import("std");
|
|
\\const io = std.io;
|
|
\\const os = std.os;
|
|
\\
|
|
\\pub fn main() !void {
|
|
\\ var gpa: std.heap.GeneralPurposeAllocator(.{}) = .init;
|
|
\\ defer _ = gpa.deinit();
|
|
\\ var arena = std.heap.ArenaAllocator.init(gpa.allocator());
|
|
\\ defer arena.deinit();
|
|
\\ var args_it = try std.process.argsWithAllocator(arena.allocator());
|
|
\\ const stdout = io.getStdOut().writer();
|
|
\\ var index: usize = 0;
|
|
\\ _ = args_it.skip();
|
|
\\ while (args_it.next()) |arg| : (index += 1) {
|
|
\\ try stdout.print("{}: {s}\n", .{index, arg});
|
|
\\ }
|
|
\\}
|
|
,
|
|
\\0: first arg
|
|
\\1: 'a' 'b' \
|
|
\\2: bare
|
|
\\3: ba""re
|
|
\\4: "
|
|
\\5: last arg
|
|
\\
|
|
);
|
|
|
|
tc.setCommandLineArgs(&[_][]const u8{
|
|
"first arg",
|
|
"'a' 'b' \\",
|
|
"bare",
|
|
"ba\"\"re",
|
|
"\"",
|
|
"last arg",
|
|
});
|
|
|
|
break :x tc;
|
|
});
|
|
|
|
cases.addCase(x: {
|
|
var tc = cases.create("parsing args new API",
|
|
\\const std = @import("std");
|
|
\\const io = std.io;
|
|
\\const os = std.os;
|
|
\\
|
|
\\pub fn main() !void {
|
|
\\ var gpa: std.heap.GeneralPurposeAllocator(.{}) = .init;
|
|
\\ defer _ = gpa.deinit();
|
|
\\ var arena = std.heap.ArenaAllocator.init(gpa.allocator());
|
|
\\ defer arena.deinit();
|
|
\\ var args_it = try std.process.argsWithAllocator(arena.allocator());
|
|
\\ const stdout = io.getStdOut().writer();
|
|
\\ var index: usize = 0;
|
|
\\ _ = args_it.skip();
|
|
\\ while (args_it.next()) |arg| : (index += 1) {
|
|
\\ try stdout.print("{}: {s}\n", .{index, arg});
|
|
\\ }
|
|
\\}
|
|
,
|
|
\\0: first arg
|
|
\\1: 'a' 'b' \
|
|
\\2: bare
|
|
\\3: ba""re
|
|
\\4: "
|
|
\\5: last arg
|
|
\\
|
|
);
|
|
|
|
tc.setCommandLineArgs(&[_][]const u8{
|
|
"first arg",
|
|
"'a' 'b' \\",
|
|
"bare",
|
|
"ba\"\"re",
|
|
"\"",
|
|
"last arg",
|
|
});
|
|
|
|
break :x tc;
|
|
});
|
|
|
|
// It is required to override the log function in order to print to stdout instead of stderr
|
|
cases.add("std.log per scope log level override",
|
|
\\const std = @import("std");
|
|
\\
|
|
\\pub const std_options: std.Options = .{
|
|
\\ .log_level = .debug,
|
|
\\
|
|
\\ .log_scope_levels = &.{
|
|
\\ .{ .scope = .a, .level = .warn },
|
|
\\ .{ .scope = .c, .level = .err },
|
|
\\ },
|
|
\\ .logFn = log,
|
|
\\};
|
|
\\
|
|
\\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 std_options: std.Options = .{
|
|
\\ .log_level = .debug,
|
|
\\ .logFn = log,
|
|
\\};
|
|
\\
|
|
\\pub fn main() !void {
|
|
\\ var allocator_buf: [10]u8 = undefined;
|
|
\\ const fba = std.heap.FixedBufferAllocator.init(&allocator_buf);
|
|
\\ var fba_wrapped = std.mem.validationWrap(fba);
|
|
\\ var logging_allocator = std.heap.loggingAllocator(fba_wrapped.allocator());
|
|
\\ const allocator = logging_allocator.allocator();
|
|
\\
|
|
\\ var a = try allocator.alloc(u8, 10);
|
|
\\ try std.testing.expect(allocator.resize(a, 5));
|
|
\\ a = a[0..5];
|
|
\\ try std.testing.expect(a.len == 5);
|
|
\\ try std.testing.expect(!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: 0
|
|
\\debug: shrink - success - 10 to 5, buf_align: 0
|
|
\\error: expand - failure - 5 to 20, buf_align: 0
|
|
\\debug: free - len: 5
|
|
\\
|
|
);
|
|
|
|
cases.add("valid carriage return example", "const io = @import(\"std\").io;\r\n" ++ // Testing CRLF line endings are valid
|
|
"\r\n" ++
|
|
"pub \r fn main() void {\r\n" ++ // Testing isolated carriage return as whitespace is valid
|
|
" const stdout = io.getStdOut().writer();\r\n" ++
|
|
" stdout.print(\\\\A Multiline\r\n" ++ // testing CRLF at end of multiline string line is valid and normalises to \n in the output
|
|
" \\\\String\r\n" ++
|
|
" , .{}) catch unreachable;\r\n" ++
|
|
"}\r\n", "A Multiline\nString");
|
|
}
|