132 lines
1.6 KiB
V
132 lines
1.6 KiB
V
// usage test: v ast path_to_v/cmd/tools/vast/test/demo.v
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// will generate demo.json
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// comment for module
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module main
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// import module
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import os
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import math
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import time { Time, now }
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// const decl
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const (
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a = 1
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b = 3
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c = 'c'
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)
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// struct decl
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struct Point {
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x int
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mut:
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y int
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pub:
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z int
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pub mut:
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name string
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}
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// method of Point
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pub fn (p Point) get_x() int {
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return p.x
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}
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// embed struct
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struct MyPoint {
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Point
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title string
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}
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// enum type
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enum Color {
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red
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green
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blue
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}
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// type alias
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type Myint = int
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// sum type
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type MySumType = bool | int | string
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// function type
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type Myfn = fn (int) int
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// interface type
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interface Myinterfacer {
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add(int, int) int
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sub(int, int) int
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}
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// main funciton
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fn main() {
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add(1, 3)
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println(add(1, 2))
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println('ok') // comment println
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arr := [1, 3, 5, 7]
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for a in arr {
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println(a)
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add(1, 3)
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}
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color := Color.red
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println(color)
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println(os.args)
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m := math.max(1, 3)
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println(m)
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println(now())
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t := Time{}
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println(t)
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p := Point{
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x: 1
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y: 2
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z: 3
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}
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println(p)
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my_point := MyPoint{
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// x: 1
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// y: 3
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// z: 5
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}
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println(my_point.get_x())
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}
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// normal function
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fn add(x int, y int) int {
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return x + y
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}
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// function with defer stmt
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fn defer_fn() {
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mut x := 1
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println('start fn')
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defer {
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println('in defer block')
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println(x)
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}
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println('end fn')
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}
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// generic function
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fn g_fn<T>(p T) T {
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return p
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}
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// generic struct
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struct GenericStruct<T> {
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point Point
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mut:
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model T
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}
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// generic interface
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interface Gettable<T> {
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get() T
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}
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// generic sumtype
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struct None {}
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type MyOption<T> = Error | None | T
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