|  | // Copyright 2012 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. | 
|  |  | 
|  | // Test method expressions with arguments. | 
|  |  | 
|  | package main | 
|  |  | 
|  | import "./method4a" | 
|  |  | 
|  | type T1 int | 
|  |  | 
|  | type T2 struct { | 
|  | f int | 
|  | } | 
|  |  | 
|  | type I1 interface { | 
|  | Sum([]int, int) int | 
|  | } | 
|  |  | 
|  | type I2 interface { | 
|  | Sum(a []int, b int) int | 
|  | } | 
|  |  | 
|  | func (i T1) Sum(a []int, b int) int { | 
|  | r := int(i) + b | 
|  | for _, v := range a { | 
|  | r += v | 
|  | } | 
|  | return r | 
|  | } | 
|  |  | 
|  | func (p *T2) Sum(a []int, b int) int { | 
|  | r := p.f + b | 
|  | for _, v := range a { | 
|  | r += v | 
|  | } | 
|  | return r | 
|  | } | 
|  |  | 
|  | func eq(v1, v2 int) { | 
|  | if v1 != v2 { | 
|  | panic(0) | 
|  | } | 
|  | } | 
|  |  | 
|  | func main() { | 
|  | a := []int{1, 2, 3} | 
|  | t1 := T1(4) | 
|  | t2 := &T2{4} | 
|  |  | 
|  | eq(t1.Sum(a, 5), 15) | 
|  | eq(t2.Sum(a, 6), 16) | 
|  |  | 
|  | eq(T1.Sum(t1, a, 7), 17) | 
|  | eq((*T2).Sum(t2, a, 8), 18) | 
|  |  | 
|  | f1 := T1.Sum | 
|  | eq(f1(t1, a, 9), 19) | 
|  | f2 := (*T2).Sum | 
|  | eq(f2(t2, a, 10), 20) | 
|  |  | 
|  | eq(I1.Sum(t1, a, 11), 21) | 
|  | eq(I1.Sum(t2, a, 12), 22) | 
|  |  | 
|  | f3 := I1.Sum | 
|  | eq(f3(t1, a, 13), 23) | 
|  | eq(f3(t2, a, 14), 24) | 
|  |  | 
|  | eq(I2.Sum(t1, a, 15), 25) | 
|  | eq(I2.Sum(t2, a, 16), 26) | 
|  |  | 
|  | f4 := I2.Sum | 
|  | eq(f4(t1, a, 17), 27) | 
|  | eq(f4(t2, a, 18), 28) | 
|  |  | 
|  | // issue 6723 | 
|  | f5 := (interface { | 
|  | I2 | 
|  | }).Sum | 
|  | eq(f5(t1, a, 19), 29) | 
|  | eq(f5(t2, a, 20), 30) | 
|  |  | 
|  | mt1 := method4a.T1(4) | 
|  | mt2 := &method4a.T2{4} | 
|  |  | 
|  | eq(mt1.Sum(a, 30), 40) | 
|  | eq(mt2.Sum(a, 31), 41) | 
|  |  | 
|  | eq(method4a.T1.Sum(mt1, a, 32), 42) | 
|  | eq((*method4a.T2).Sum(mt2, a, 33), 43) | 
|  |  | 
|  | g1 := method4a.T1.Sum | 
|  | eq(g1(mt1, a, 34), 44) | 
|  | g2 := (*method4a.T2).Sum | 
|  | eq(g2(mt2, a, 35), 45) | 
|  |  | 
|  | eq(method4a.I1.Sum(mt1, a, 36), 46) | 
|  | eq(method4a.I1.Sum(mt2, a, 37), 47) | 
|  |  | 
|  | g3 := method4a.I1.Sum | 
|  | eq(g3(mt1, a, 38), 48) | 
|  | eq(g3(mt2, a, 39), 49) | 
|  |  | 
|  | eq(method4a.I2.Sum(mt1, a, 40), 50) | 
|  | eq(method4a.I2.Sum(mt2, a, 41), 51) | 
|  |  | 
|  | g4 := method4a.I2.Sum | 
|  | eq(g4(mt1, a, 42), 52) | 
|  | eq(g4(mt2, a, 43), 53) | 
|  | } |