mirror of
https://github.com/vlang/v.git
synced 2023-08-10 21:13:21 +03:00
193 lines
3.2 KiB
V
193 lines
3.2 KiB
V
struct A{
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mut:
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val int
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nums []int
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}
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struct B{
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mut:
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a A
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}
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struct C {
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mut:
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b B
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nums []int
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aarr []A
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num int
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}
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struct User {
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name string
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age int
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}
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struct Foo {
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@type string
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}
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//We need to make sure that this compiles with all the reserved names.
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struct ReservedKeywords {
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delete int
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exit int
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unix int
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error int
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malloc int
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calloc int
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free int
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panic int
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auto int
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char int
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do int
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double int
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extern int
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float int
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inline int
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long int
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register int
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restrict int
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short int
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signed int
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typedef int
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unsigned int
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void int
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volatile int
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while int
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}
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fn test_struct_levels() {
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mut c := C{}
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assert c.nums.len == 0
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c.nums << 3
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assert c.nums.len == 1
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assert c.nums[0] == 3
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c.nums[0] = 4
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assert c.nums[0] == 4
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c.b.a.val = 34
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assert c.b.a.val == 34
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c.b.a.nums = [0].repeat(0)
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c.b.a.nums << 0
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c.b.a.nums << 2
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assert c.b.a.nums.len == 2
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assert c.b.a.nums[0] == 0
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assert c.b.a.nums[1] == 2
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c.b.a.nums [0] = 7
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assert c.b.a.nums[0] == 7
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c.aarr << A{val:8}
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assert c.aarr.len == 1
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assert c.aarr[0].val == 8
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c.num = 20
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assert c.num == 20
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c.aarr[0].val = 10
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assert c.aarr[0].val == 10
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}
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fn test_struct_str() {
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u := User{'Bob', 30}
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println(u) // make sure the struct is printable
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// assert u.str() == '{name:"Bob", age:30}' // TODO
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}
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fn test_at() {
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foo := Foo{ @type: 'test' }
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println(foo.@type)
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}
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fn test_reserved_keywords() {
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//Make sure we can initialize them correctly using full syntax.
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rk_holder := ReservedKeywords{0, 0, 5, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 3}
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//Test a few as it'll take too long to test all. If it's initialized
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//correctly, other fields are also probably valid.
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assert rk_holder.unix == 5
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assert rk_holder.while == 3
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rk_holder2 := ReservedKeywords{inline: 9, volatile: 11}
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//Make sure partial initialization works too.
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assert rk_holder2.inline == 9
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assert rk_holder2.volatile == 11
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assert rk_holder2.while == 0 //Zero value as not specified.
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}
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struct User2 {
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mut:
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name string
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}
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fn test_mutable_fields() {
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mut u := User2{}
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u.name = 'Peter'
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assert u.name == 'Peter'
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}
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struct Def {
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a int
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b int = 7
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}
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fn test_default_vals() {
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d := Def{}
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assert d.a == 0
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assert d.b == 7
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d2 := Def{10, 20}
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assert d2.a == 10
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assert d2.b == 20
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}
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fn test_assoc_with_vars() {
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def2 := Def { a: 12 }
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merged := { def2 | a: 42 }
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assert merged.a == 42
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assert merged.b == 7
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}
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const (
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const_def = Def { a: 100 }
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)
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fn test_assoc_with_constants() {
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merged := { const_def | a: 42 }
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assert merged.a == 42
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assert merged.b == 7
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again := { const_def | b: 22 }
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assert again.a == 100
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assert again.b == 22
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}
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struct AttrTest{
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a int // private immutable (default)
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mut:
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b int // private mutable
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c int // (you can list multiple fields with the same access modifier)
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pub:
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d int // public immmutable (readonly)
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pub mut:
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e int // public, but mutable only in parent module
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//__global:
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f int // public and mutable both inside and outside parent module
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}
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/*
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[typedef]
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struct C.fixed {
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points [10]C.point
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}
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[typedef]
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struct C.point {
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x int
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y int
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}
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fn test_fixed_field() {
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f := &C.fixed{}
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p := f.points[0]
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//f.nums[0] = 10
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//println(f.nums[0])
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println(p.x)
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//nums: [10]int
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//}
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}
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*/
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