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[dev.regabi] go/types: factor out sorting of methods

This is a port of CL 285993 to go/types.

Change-Id: I7560cf1176fea5de2c54786a086e547c73294a60
Reviewed-on: https://go-review.googlesource.com/c/go/+/289717
Trust: Robert Findley <rfindley@google.com>
Trust: Robert Griesemer <gri@golang.org>
Run-TryBot: Robert Findley <rfindley@google.com>
TryBot-Result: Go Bot <gobot@golang.org>
Reviewed-by: Robert Griesemer <gri@golang.org>
This commit is contained in:
Rob Findley 2021-02-04 12:10:02 -05:00 committed by Robert Findley
parent 11d15c171b
commit 813958f13c
3 changed files with 24 additions and 11 deletions

View File

@ -6,8 +6,6 @@
package types
import "sort"
func isNamed(typ Type) bool {
if _, ok := typ.(*Basic); ok {
return ok
@ -273,8 +271,8 @@ func (check *Checker) identical0(x, y Type, cmpTags bool, p *ifacePair) bool {
p = p.prev
}
if debug {
assert(sort.IsSorted(byUniqueMethodName(a)))
assert(sort.IsSorted(byUniqueMethodName(b)))
assertSortedMethods(a)
assertSortedMethods(b)
}
for i, f := range a {
g := b[i]

View File

@ -4,8 +4,6 @@
package types
import "sort"
// A Type represents a type of Go.
// All types implement the Type interface.
type Type interface {
@ -301,8 +299,8 @@ func NewInterfaceType(methods []*Func, embeddeds []Type) *Interface {
}
// sort for API stability
sort.Sort(byUniqueMethodName(methods))
sort.Stable(byUniqueTypeName(embeddeds))
sortMethods(methods)
sortTypes(embeddeds)
typ.methods = methods
typ.embeddeds = embeddeds
@ -396,7 +394,7 @@ func (t *Interface) Complete() *Interface {
}
if methods != nil {
sort.Sort(byUniqueMethodName(methods))
sortMethods(methods)
t.allMethods = methods
}

View File

@ -518,8 +518,8 @@ func (check *Checker) interfaceType(ityp *Interface, iface *ast.InterfaceType, d
}
// sort for API stability
sort.Sort(byUniqueMethodName(ityp.methods))
sort.Stable(byUniqueTypeName(ityp.embeddeds))
sortMethods(ityp.methods)
sortTypes(ityp.embeddeds)
check.later(func() { check.completeInterface(ityp) })
}
@ -613,6 +613,10 @@ func (check *Checker) completeInterface(ityp *Interface) {
}
}
func sortTypes(list []Type) {
sort.Stable(byUniqueTypeName(list))
}
// byUniqueTypeName named type lists can be sorted by their unique type names.
type byUniqueTypeName []Type
@ -627,6 +631,19 @@ func sortName(t Type) string {
return ""
}
func sortMethods(list []*Func) {
sort.Sort(byUniqueMethodName(list))
}
func assertSortedMethods(list []*Func) {
if !debug {
panic("internal error: assertSortedMethods called outside debug mode")
}
if !sort.IsSorted(byUniqueMethodName(list)) {
panic("internal error: methods not sorted")
}
}
// byUniqueMethodName method lists can be sorted by their unique method names.
type byUniqueMethodName []*Func