mirror of
https://github.com/vlang/v.git
synced 2023-08-10 21:13:21 +03:00
167 lines
2.2 KiB
V
167 lines
2.2 KiB
V
// 1 line comment
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/* 1 line comment */
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/*
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multi line comment (1)
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multi line comment (2)
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multi line comment (3)
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*/
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/*
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multi line comment (1)
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/*
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nested comment
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*/
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/*nested comment*/
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/*nested comment
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*/
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/* nested comment */
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/* /* nested comment */ */
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multi line comment (2)
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*/
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type myfn fn (int) string
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type myfn2 fn (a int, b int) int
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type myfn3 fn (int, int)
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fn myfn4(string)
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fn foobar()
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fn slopediv(num u32, den u32) int
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type f1 fn ()
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type f2 fn (voidptr)
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type f3 fn (voidptr, voidptr)
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type f4 fn (voidptr) int
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type f5 fn (int, int) int
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type f6 fn (int, int)
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fn C.atoi(byteptr) int
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fn foo() {
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}
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type actionf_v fn ()
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type actionf_p1 fn (voidptr)
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type actionf_p2 fn (voidptr, voidptr)
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// TODO
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fn modify_array(a mut []int) {
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a[0] = 10
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for i in 0..a.len {
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a[i] = a[i] * 2
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}
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//a << 888
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}
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fn test_mut_array() {
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mut nums := [1, 2, 3]
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modify_array(mut nums)
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//assert nums.len == 4
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// println(nums)
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assert nums[0] == 20
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assert nums[1] == 4
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assert nums[2] == 6
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//assert nums[3] == 888
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// workaround for // [91, 32, -33686272] windows bug
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println(nums.clone())
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}
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fn mod_struct(user mut User) {
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user.age++
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}
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struct User {
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mut:
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age int
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}
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fn test_mut_struct() {
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mut user := User{18}
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mod_struct(mut user)
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assert user.age == 19
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}
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fn mod_ptr(buf mut byteptr) {
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buf[0] = 77
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}
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fn test_mut_ptr() {
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buf := malloc(10)
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mod_ptr(mut buf)
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assert buf[0] == 77
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}
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fn high_fn(f fn(int) int) {
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}
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fn high_fn_array(f fn(a []int) []int) {
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}
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fn high_fn_multi_return(a int, b fn (c []int, d []string) ([]int, []string)) {
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}
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fn sqr(x int) int {
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return x * x
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}
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fn test_fns() {
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// no asserts for now, just test function declarations above
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high_fn(sqr)
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}
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fn test_anon_fn() {
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/*
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high_fn(fn (x int) int {
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println('hello')
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return x + 1
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})
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*/
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}
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fn assert_in_bool_fn(v int) bool {
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assert v < 3
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return true
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}
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fn test_assert_in_bool_fn() {
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assert_in_bool_fn(2)
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}
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type MyFn fn (int) int
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fn test(n int) int {
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return n + 1000
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}
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struct MySt {
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f MyFn
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}
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fn test_fn_type_call() {
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mut arr := []MyFn
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arr << MyFn(test)
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assert arr[0](10) == 1010
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st := MySt{f:test}
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assert st.f(10) == 1010
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st1 := &MySt{f:test}
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assert st1.f(10) == 1010
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}
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