mirror of
https://github.com/golang/go
synced 2024-11-19 04:24:39 -07:00
8cdf1f1cb1
Extracted Builder.findMethod function to handle
methodset/receiver logic common to
function calls (Builder.setCall) and
bound method closure creation (Builder.selector).
Capture: added explicit Name, Type fields to Capture instead
of relying on Outer field, which is now un-exported since its
only purpose is to let Builder.expr(case *ast.FuncLit) know
which values to put in the closure; it is nilled immediately
after.
Simplified Function.lookup() logic: there's no need to walk
the Outer chain each time to set Alloc.Heap=true, as it's
already set during creation of the outermost
Capture{outer:*Alloc}.
Added interp/testdata/boundmeth.go test.
Cosmetic changes:
- add support for bound method thunks to Function.FullName().
- Simplified {Literal,Global,Builtin,Function}.String()
- doc: Captures are no longer necessarily addresses.
- added yet another missing pair of "()" (go/types accessors).
- print "Synthetic" not "Declared at -" for synthetic functions.
- use '$' not center-dot in synthetic identifiers (easier to type).
R=gri
CC=golang-dev
https://golang.org/cl/9654043
89 lines
1.1 KiB
Go
89 lines
1.1 KiB
Go
// Tests of bound method closures.
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package main
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func assert(b bool) {
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if !b {
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panic("oops")
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}
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}
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type I int
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func (i I) add(x int) int {
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return int(i) + x
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}
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func valueReceiver() {
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var three I = 3
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assert(three.add(5) == 8)
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var add3 func(int) int = three.add
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assert(add3(5) == 8)
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}
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type S struct{ x int }
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func (s *S) incr() {
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s.x++
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}
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func (s *S) get() int {
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return s.x
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}
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func pointerReceiver() {
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ps := new(S)
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incr := ps.incr
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get := ps.get
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assert(get() == 0)
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incr()
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incr()
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incr()
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assert(get() == 3)
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}
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func addressibleValuePointerReceiver() {
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var s S
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incr := s.incr
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get := s.get
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assert(get() == 0)
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incr()
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incr()
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incr()
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assert(get() == 3)
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}
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type S2 struct {
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S
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}
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func promotedReceiver() {
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var s2 S2
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incr := s2.incr
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get := s2.get
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assert(get() == 0)
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incr()
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incr()
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incr()
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assert(get() == 3)
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}
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func anonStruct() {
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var s struct{ S }
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incr := s.incr
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get := s.get
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assert(get() == 0)
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incr()
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incr()
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incr()
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assert(get() == 3)
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}
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func main() {
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valueReceiver()
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pointerReceiver()
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addressibleValuePointerReceiver()
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promotedReceiver()
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anonStruct()
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}
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