// license that can be found in the LICENSE file.

package main

type xyz struct {
    ch chan
} // ERROR "unexpected .*}.* in channel type|missing channel element type"

func Foo(y chan) { // ERROR "unexpected .*\).* in channel type|missing channel element type"
}

func Bar(x chan, y int) { // ERROR "unexpected comma in channel type|missing channel element type"

// errorcheck

// Copyright 2010 The Go Authors. All rights reserved.
// Use of this source code is governed by a BSD-style
// license that can be found in the LICENSE file.

package main

var c chan int
var v int

func main() {
	if c <- v { // ERROR "cannot use c <- v as value|send statement used as value"
	}
}

	dataqsiz uint           // size of the circular queue
	buf      unsafe.Pointer // points to an array of dataqsiz elements
	elemsize uint16
	closed   uint32
	timer    *timer // timer feeding this chan
	elemtype *_type // element type
	sendx    uint   // send index
	recvx    uint   // receive index
	recvq    waitq  // list of recv waiters
	sendq    waitq  // list of send waiters

}

func CrashDumpsAllThreads() {
	const count = 4
	runtime.GOMAXPROCS(count + 1)

	chans := make([]chan bool, count)
	for i := range chans {
		chans[i] = make(chan bool)
		go crashDumpsAllThreadsLoop(i, chans[i])
	}

	// Wait for all the goroutines to start executing.
	for _, c := range chans {
		<-c
	}

	// Tell our parent that all the goroutines are executing.

	}
}

// Keep the channels visible from Go.
var chans [4]chan bool

// Double return value is just for testing.
//
//export GoStart
func GoStart(i, xdim, ydim, xstart, xend, ystart, yend C.int, a *C.int, n *C.int) (int, int) {
	c := make(chan bool, int(C.MYCONST))
	go func() {
		C.DoStep(xdim, ydim, xstart, xend, ystart, yend, a, n)
		c <- true
	}()
	chans[i] = c
	return int(i), int(i + 100)
}

//export GoWait

	}
}

// Keep the channels visible from Go.
var chans [4]chan bool

// Double return value is just for testing.
//
//export GoStart
func GoStart(i, xdim, ydim, xstart, xend, ystart, yend C.int, a *C.int, n *C.int) (int, int) {
	c := make(chan bool, int(C.MYCONST))
	go func() {
		C.DoStep(xdim, ydim, xstart, xend, ystart, yend, a, n)
		c <- true
	}()
	chans[i] = c
	return int(i), int(i + 100)
}

//export GoWait

// results when they are ready.
func (g *Group) DoChan(key string, fn func() (any, error)) <-chan Result {
	ch := make(chan Result, 1)
	g.mu.Lock()
	if g.m == nil {
		g.m = make(map[string]*call)
	}
	if c, ok := g.m[key]; ok {
		c.dups++
		c.chans = append(c.chans, ch)
		g.mu.Unlock()
		return ch
	}
	c := &call{chans: []chan<- Result{ch}}
	c.wg.Add(1)
	g.m[key] = c
	g.mu.Unlock()

	go g.doCall(c, key, fn)

	case a.mapT == nil:
		return errors.New(a.name + " missing mapT")
	case a.mapPointerKeyT == nil:
		return errors.New(a.name + " missing mapPointerKeyT")
	case a.chanT == nil:
		return errors.New(a.name + " missing chanT")
	case a.interfaceT == nil:
		return errors.New(a.name + " missing interfaceT")
	default:
		return nil
	}
}

var types = []modifier{
	modifier{
		name: "bool",

		return U
	}
	ch, ok := U.(*types.Chan)
	if !ok {
		return nil // no core type as identical < len(terms) and U is not a channel.
	}
	// https://go.dev/ref/spec#Core_types
	// "the type chan E if T contains only bidirectional channels, or the type chan<- E or
	// <-chan E depending on the direction of the directional channels present."
	for chans := identical; chans < len(terms); chans++ {

// license that can be found in the LICENSE file.

// Test simple type switches, including chans, maps etc.

package main

import "os"

const (
	Bool = iota
	Int
	Float
	String
	Struct
	Chan
	Array
	Map
	Func
	Last
)

type S struct {
	a int
}

var s S = S{1234}

var c = make(chan int)

var a = []int{0, 1, 2, 3}

var m = make(map[string]int)