Golang code-google-com-p-go-tools-go-types.Chan类(方法)实例源码

func (tm *TypeMap) chanRuntimeType(c *types.Chan) (global, ptr llvm.Value) {
	rtype := tm.makeRtype(c, reflect.Chan)
	chanType := llvm.ConstNull(tm.runtime.chanType.llvm)
	chanType = llvm.ConstInsertValue(chanType, rtype, []uint32{0})
	chanType = llvm.ConstInsertValue(chanType, tm.ToRuntime(c.Elem()), []uint32{1})

	// go/ast and reflect disagree on values for direction.
	var dir reflect.ChanDir
	switch c.Dir() {
	case types.SendOnly:
		dir = reflect.SendDir
	case types.RecvOnly:
		dir = reflect.RecvDir
	case types.SendRecv:
		dir = reflect.SendDir | reflect.RecvDir
	}
	uintptrdir := llvm.ConstInt(tm.target.IntPtrType(), uint64(dir), false)
	chanType = llvm.ConstInsertValue(chanType, uintptrdir, []uint32{2})
	return tm.makeRuntimeTypeGlobal(chanType, typeString(c))
}

func (tm *TypeMap) chanRuntimeType(c *types.Chan) (global, ptr llvm.Value) {
	rtype := tm.makeRtype(c, reflect.Chan)
	chanType := llvm.ConstNull(tm.runtimeChanType)
	chanType = llvm.ConstInsertValue(chanType, rtype, []uint32{0})
	chanType = llvm.ConstInsertValue(chanType, tm.ToRuntime(c.Elem()), []uint32{1})

	// go/ast and reflect disagree on values for direction.
	var dir reflect.ChanDir
	if c.Dir()&ast.SEND != 0 {
		dir = reflect.SendDir
	}
	if c.Dir()&ast.RECV != 0 {
		dir |= reflect.RecvDir
	}
	uintptrdir := llvm.ConstInt(tm.target.IntPtrType(), uint64(dir), false)
	chanType = llvm.ConstInsertValue(chanType, uintptrdir, []uint32{2})
	return tm.makeRuntimeTypeGlobal(chanType)
}