modernc.org/gc@v1.0.1-0.20240304020402-f0dba7c97c2b/testdata/errchk/test/ddd.go (about)

     1  // run
     2  
     3  // Copyright 2010 The Go Authors. All rights reserved.
     4  // Use of this source code is governed by a BSD-style
     5  // license that can be found in the LICENSE file.
     6  
     7  // Test variadic functions and calls (dot-dot-dot).
     8  
     9  package main
    10  
    11  func sum(args ...int) int {
    12  	s := 0
    13  	for _, v := range args {
    14  		s += v
    15  	}
    16  	return s
    17  }
    18  
    19  func sumC(args ...int) int { return func() int { return sum(args...) }() }
    20  
    21  var sumD = func(args ...int) int { return sum(args...) }
    22  
    23  var sumE = func() func(...int) int { return func(args ...int) int { return sum(args...) } }()
    24  
    25  var sumF = func(args ...int) func() int { return func() int { return sum(args...) } }
    26  
    27  func sumA(args []int) int {
    28  	s := 0
    29  	for _, v := range args {
    30  		s += v
    31  	}
    32  	return s
    33  }
    34  
    35  func sumB(args []int) int { return sum(args...) }
    36  
    37  func sum2(args ...int) int { return 2 * sum(args...) }
    38  
    39  func sum3(args ...int) int { return 3 * sumA(args) }
    40  
    41  func sum4(args ...int) int { return 4 * sumB(args) }
    42  
    43  func intersum(args ...interface{}) int {
    44  	s := 0
    45  	for _, v := range args {
    46  		s += v.(int)
    47  	}
    48  	return s
    49  }
    50  
    51  type T []T
    52  
    53  func ln(args ...T) int { return len(args) }
    54  
    55  func ln2(args ...T) int { return 2 * ln(args...) }
    56  
    57  func (*T) Sum(args ...int) int { return sum(args...) }
    58  
    59  type U struct {
    60  	*T
    61  }
    62  
    63  type I interface {
    64  	Sum(...int) int
    65  }
    66  
    67  func main() {
    68  	if x := sum(1, 2, 3); x != 6 {
    69  		println("sum 6", x)
    70  		panic("fail")
    71  	}
    72  	if x := sum(); x != 0 {
    73  		println("sum 0", x)
    74  		panic("fail")
    75  	}
    76  	if x := sum(10); x != 10 {
    77  		println("sum 10", x)
    78  		panic("fail")
    79  	}
    80  	if x := sum(1, 8); x != 9 {
    81  		println("sum 9", x)
    82  		panic("fail")
    83  	}
    84  	if x := sumC(4, 5, 6); x != 15 {
    85  		println("sumC 15", x)
    86  		panic("fail")
    87  	}
    88  	if x := sumD(4, 5, 7); x != 16 {
    89  		println("sumD 16", x)
    90  		panic("fail")
    91  	}
    92  	if x := sumE(4, 5, 8); x != 17 {
    93  		println("sumE 17", x)
    94  		panic("fail")
    95  	}
    96  	if x := sumF(4, 5, 9)(); x != 18 {
    97  		println("sumF 18", x)
    98  		panic("fail")
    99  	}
   100  	if x := sum2(1, 2, 3); x != 2*6 {
   101  		println("sum 6", x)
   102  		panic("fail")
   103  	}
   104  	if x := sum2(); x != 2*0 {
   105  		println("sum 0", x)
   106  		panic("fail")
   107  	}
   108  	if x := sum2(10); x != 2*10 {
   109  		println("sum 10", x)
   110  		panic("fail")
   111  	}
   112  	if x := sum2(1, 8); x != 2*9 {
   113  		println("sum 9", x)
   114  		panic("fail")
   115  	}
   116  	if x := sum3(1, 2, 3); x != 3*6 {
   117  		println("sum 6", x)
   118  		panic("fail")
   119  	}
   120  	if x := sum3(); x != 3*0 {
   121  		println("sum 0", x)
   122  		panic("fail")
   123  	}
   124  	if x := sum3(10); x != 3*10 {
   125  		println("sum 10", x)
   126  		panic("fail")
   127  	}
   128  	if x := sum3(1, 8); x != 3*9 {
   129  		println("sum 9", x)
   130  		panic("fail")
   131  	}
   132  	if x := sum4(1, 2, 3); x != 4*6 {
   133  		println("sum 6", x)
   134  		panic("fail")
   135  	}
   136  	if x := sum4(); x != 4*0 {
   137  		println("sum 0", x)
   138  		panic("fail")
   139  	}
   140  	if x := sum4(10); x != 4*10 {
   141  		println("sum 10", x)
   142  		panic("fail")
   143  	}
   144  	if x := sum4(1, 8); x != 4*9 {
   145  		println("sum 9", x)
   146  		panic("fail")
   147  	}
   148  	if x := intersum(1, 2, 3); x != 6 {
   149  		println("intersum 6", x)
   150  		panic("fail")
   151  	}
   152  	if x := intersum(); x != 0 {
   153  		println("intersum 0", x)
   154  		panic("fail")
   155  	}
   156  	if x := intersum(10); x != 10 {
   157  		println("intersum 10", x)
   158  		panic("fail")
   159  	}
   160  	if x := intersum(1, 8); x != 9 {
   161  		println("intersum 9", x)
   162  		panic("fail")
   163  	}
   164  
   165  	if x := ln(nil, nil, nil); x != 3 {
   166  		println("ln 3", x)
   167  		panic("fail")
   168  	}
   169  	if x := ln([]T{}); x != 1 {
   170  		println("ln 1", x)
   171  		panic("fail")
   172  	}
   173  	if x := ln2(nil, nil, nil); x != 2*3 {
   174  		println("ln2 3", x)
   175  		panic("fail")
   176  	}
   177  	if x := ln2([]T{}); x != 2*1 {
   178  		println("ln2 1", x)
   179  		panic("fail")
   180  	}
   181  	if x := ((*T)(nil)).Sum(1, 3, 5, 7); x != 16 {
   182  		println("(*T)(nil).Sum", x)
   183  		panic("fail")
   184  	}
   185  	if x := (*T).Sum(nil, 1, 3, 5, 6); x != 15 {
   186  		println("(*T).Sum", x)
   187  		panic("fail")
   188  	}
   189  	if x := (&U{}).Sum(1, 3, 5, 5); x != 14 {
   190  		println("(&U{}).Sum", x)
   191  		panic("fail")
   192  	}
   193  	var u U
   194  	if x := u.Sum(1, 3, 5, 4); x != 13 {
   195  		println("u.Sum", x)
   196  		panic("fail")
   197  	}
   198  	if x := (&u).Sum(1, 3, 5, 3); x != 12 {
   199  		println("(&u).Sum", x)
   200  		panic("fail")
   201  	}
   202  	var i interface {
   203  		Sum(...int) int
   204  	} = &u
   205  	if x := i.Sum(2, 3, 5, 7); x != 17 {
   206  		println("i(=&u).Sum", x)
   207  		panic("fail")
   208  	}
   209  	i = u
   210  	if x := i.Sum(2, 3, 5, 6); x != 16 {
   211  		println("i(=u).Sum", x)
   212  		panic("fail")
   213  	}
   214  	var s struct {
   215  		I
   216  	}
   217  	s.I = &u
   218  	if x := s.Sum(2, 3, 5, 8); x != 18 {
   219  		println("s{&u}.Sum", x)
   220  		panic("fail")
   221  	}
   222  	if x := (*U).Sum(&U{}, 1, 3, 5, 2); x != 11 {
   223  		println("(*U).Sum", x)
   224  		panic("fail")
   225  	}
   226  	if x := U.Sum(U{}, 1, 3, 5, 1); x != 10 {
   227  		println("U.Sum", x)
   228  		panic("fail")
   229  	}
   230  }