ref: d0ba03240de4d5e3cc9943ab25771b46311c4dab
dir: /lib/std/test/fmt.myr/
use std
type blah
type blah = struct
a : byte[:]
b : int
;;
type u = union
`First
`Second int
`Third byte[:]
;;
type pair = struct
x : int16
y : int32
;;
const check = {expected, fmt, args : ...
var buf : byte[2048]
var sl, ap
ap = std.vastart(&args)
sl = std.bfmtv(buf[:], fmt, &ap)
if !std.sleq(expected, sl)
std.fatal("mismatched fmt: got \"{}\", expected \"{}\"\n", sl, expected)
;;
}
type aligncheck = union
`Foo
`Bar int64
;;
const main = {
builtins()
installed()
}
const builtins = {
var s : blah
var m : u
/* basic types */
check(" abcd", "{w=10}", "abcd")
check("00000bdcae", "{p=0,w=10}", "bdcae")
check("abcdefghijkl", "{p=0,w=10}", "abcdefghijkl")
check("a", "{w=0,p=1}", "a")
check(" 10", "{w=10}", 10)
check("0000000010", "{p=0,w=10}", 10)
check("4294967295", "{p=0,w=10}", (-1 : uint))
check("-000000001", "{p=0,w=10}", -1)
check("xxxxxxxx-1", "{p=x,w=10}", -1)
check(" -1", "{w=10}", -1)
check("100000" , "{w=3}", 100000)
check("foobarbaz", "{}bar{}", "foo", "baz")
check("\\n\\r\\xff", "{e}", "\n\r\xff")
check("{}barbaz", "{{}}bar{}", "baz")
check("{barbaz}", "{{bar{}}}", "baz")
check("abcd", "{}", "abcd")
check("123", "{}", 123)
check("7b", "{x}", 123)
check("0x7b", "0x{x}", 123)
check("0.0", "{}", 0.0)
check("0.3", "{}", 0.3)
check("1.0", "{}", 1.0)
check("100.0", "{}", 100.0)
check("666.91972", "{}", 666.91972)
check("1.0001", "{}", 1.0001)
check("0.000101323461002", "{}", 0.000101323461002)
check("(1, `Bar 123, `Foo )", "{}", (1, `Bar 123, `Foo))
/* tricky cases: min values for integers */
check("-128", "{}", (-128 : int8))
check("-32768", "{}", (-32768 : int16))
check("-2147483648", "{}", (-2147483648 : int32))
check("-9223372036854775808", "{}", -9223372036854775808l)
/*
compound types, followed by single value to make
sure we consume the right byte count.
*/
check("(1, 2) true", "{} {}", (1, 2), true)
check("(1,) true", "{} {}", (1,), true)
s = [.a="foo true", .b=123]
/*check("[.a=foo, .b=123] true", "{} {}", s, true) BUSTED */
m = `First
check("`First true", "{} {}", m, true)
m = `Second 123
check("`Second 123 true", "{} {}", m, true)
m = `Third "foo"
check("`Third foo true", "{} {}", m, true)
check("[1, 2, 3] true", "{} {}", [1,2,3], true)
check("[1, 2, 3] true", "{} {}", [1,2,3][:], true)
check("1:2:3 true", "{j=:} {}", [1,2,3][:], true)
check("1... 2... 3 true", "{j=... } {}", [1,2,3][:], true)
}
const installed = {
var x : int
var p : pair
x = 0
p = [.x=0, .y=0]
std.fmtinstall(std.typeof(x), intfmt, [][:])
std.fmtinstall(std.typeof(p), pairfmt, [
("x", true),
("y", false)
][:])
/* single value */
check("formatted an int: 0", "{}", 0)
check("formatted an int: -10", "{}", -10)
/* multiple values */
check("formatted an int: 0, formatted an int: 10", "{}, {}", 0, 10)
check("formatted an int: -10, formatted an int: 20", "{}, {}", -10, 20)
/* single value, no options */
p = [.x=0, .y=0]
check("formatted a pair: [0, 0]", "{}", p)
/* single value, option combos */
p = [.x=-10, .y=-10]
check("formatted a pair: [-10, -10]", "{}", p)
check("formatted a pair: [-10, -10] x=foo", "{x=foo}", p)
check("formatted a pair: [-10, -10] y present", "{y}", p)
check("formatted a pair: [-10, -10] x=bar y present", "{x=bar,y}", p)
check("formatted a pair: [-10, -10] x=bar y present", "{x=bar,y}", p)
/* multiple values */
check("formatted a pair: [-10, -10], formatted a pair: [-10, -10]", "{}, {}", p, p)
/* multiple values of different types */
check("11, formatted a pair: [-10, -10], formatted an int: 111", "{}, {}, {}", (11 : byte), p, 111)
/* in aggregates */
check("[formatted a pair: [-10, -10]]", "{}", [p])
check("[formatted a pair: [-10, -10]]", "{}", [p][:])
}
const intfmt = {sb, ap, opts
var x : int
std.assert(opts.len == 0, "options passed where none should be")
x = std.vanext(ap)
/* cast to other int type so we don't recurse */
std.sbfmt(sb, "formatted an int: {}", (x : int32))
}
const pairfmt = {sb, ap, opts
var x : pair
x = std.vanext(ap)
std.sbfmt(sb, "formatted a pair: [{}, {}]", x.x, x.y)
for opt in opts
std.sbputc(sb, ' ')
match opt
| ("x", val): std.sbfmt(sb, "x={}", val)
| ("y", ""): std.sbfmt(sb, "y present")
| _: std.fatal("unknown option")
;;
;;
}