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container/vector: delete

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Slices are better:
http://code.google.com/p/go-wiki/wiki/SliceTricks

R=golang-dev, bradfitz, dsymonds
CC=golang-dev
https://golang.org/cl/5248060
This commit is contained in:
Rob Pike 2011-10-11 16:41:48 -07:00
parent 059c68bf0c
commit f4cb96b438
14 changed files with 3 additions and 1931 deletions
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2
src/cmd/goinstall/main.go
View File

@ -292,7 +292,7 @@ func install(pkg, parent string) {
}
}
// Is this a standard package path? strings container/vector etc.
// Is this a standard package path? strings container/list etc.
// Assume that if the first element has a dot, it's a domain name
// and is not the standard package path.
func isStandardPath(s string) bool {

2
src/pkg/Makefile
View File

@ -29,7 +29,6 @@ DIRS=\
container/heap\
container/list\
container/ring\
container/vector\
crypto\
crypto/aes\
crypto/blowfish\
@ -228,7 +227,6 @@ NOTEST+=\
../cmd/hgpatch\
NOBENCH+=\
container/vector\
# Disable tests that windows cannot run yet.
ifeq ($(GOOS),windows)

69
src/pkg/container/vector/Makefile
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@ -1,69 +0,0 @@
# Copyright 2009 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.
include ../../../Make.inc
TARG=container/vector
GOFILES=\
defs.go\
intvector.go\
stringvector.go\
vector.go\
include ../../../Make.pkg
generate: vector.go vector_test.go
< vector.go cat\
| gofmt -r='Vector -> IntVector'\
| gofmt -r='interface{} -> int'\
> intvector.go\
< vector.go cat\
| gofmt -r='Vector -> StringVector'\
| gofmt -r='interface{} -> string'\
> stringvector.go\
< vector_test.go cat\
| gofmt -r='Vector -> IntVector'\
| gofmt -r='zero -> intzero'\
| gofmt -r='elem2Value -> elem2IntValue'\
| gofmt -r='intf2Value -> intf2IntValue'\
| gofmt -r='int2Value -> int2IntValue'\
| gofmt -r='TestZeroLen -> TestIntZeroLen'\
| gofmt -r='TestResize -> TestIntResize'\
| gofmt -r='TestResize2 -> TestIntResize2'\
| gofmt -r='checkZero -> checkIntZero'\
| gofmt -r='TestTrailingElements -> TestIntTrailingElements'\
| gofmt -r='TestAccess -> TestIntAccess'\
| gofmt -r='TestInsertDeleteClear -> TestIntInsertDeleteClear'\
| gofmt -r='verify_slice -> verify_sliceInt'\
| gofmt -r='verify_pattern -> verify_patternInt'\
| gofmt -r='make_vector -> make_vectorInt'\
| gofmt -r='TestInsertVector -> TestIntInsertVector'\
| gofmt -r='TestDo -> TestIntDo'\
| gofmt -r='TestVectorCopy -> TestIntVectorCopy'\
| gofmt -r='interface{} -> int'\
> intvector_test.go\
< vector_test.go cat\
| gofmt -r='Vector -> StringVector'\
| gofmt -r='zero -> strzero'\
| gofmt -r='int2Value -> int2StrValue'\
| gofmt -r='intf2Value -> intf2StrValue'\
| gofmt -r='elem2Value -> elem2StrValue'\
| gofmt -r='TestZeroLen -> TestStrZeroLen'\
| gofmt -r='TestResize -> TestStrResize'\
| gofmt -r='TestResize2 -> TestStrResize2'\
| gofmt -r='checkZero -> checkStrZero'\
| gofmt -r='TestTrailingElements -> TestStrTrailingElements'\
| gofmt -r='TestAccess -> TestStrAccess'\
| gofmt -r='TestInsertDeleteClear -> TestStrInsertDeleteClear'\
| gofmt -r='verify_slice -> verify_sliceStr'\
| gofmt -r='verify_pattern -> verify_patternStr'\
| gofmt -r='make_vector -> make_vectorStr'\
| gofmt -r='TestInsertVector -> TestStrInsertVector'\
| gofmt -r='TestDo -> TestStrDo'\
| gofmt -r='TestVectorCopy -> TestStrVectorCopy'\
| gofmt -r='interface{} -> string'\
> stringvector_test.go

43
src/pkg/container/vector/defs.go
View File

@ -1,43 +0,0 @@
// Copyright 2009 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.
// Package vector implements containers for managing sequences of elements.
// Vectors grow and shrink dynamically as necessary.
package vector
// Vector is a container for numbered sequences of elements of type interface{}.
// A vector's length and capacity adjusts automatically as necessary.
// The zero value for Vector is an empty vector ready to use.
type Vector []interface{}
// IntVector is a container for numbered sequences of elements of type int.
// A vector's length and capacity adjusts automatically as necessary.
// The zero value for IntVector is an empty vector ready to use.
type IntVector []int
// StringVector is a container for numbered sequences of elements of type string.
// A vector's length and capacity adjusts automatically as necessary.
// The zero value for StringVector is an empty vector ready to use.
type StringVector []string
// Initial underlying array size
const initialSize = 8
// Partial sort.Interface support
// LessInterface provides partial support of the sort.Interface.
type LessInterface interface {
Less(y interface{}) bool
}
// Less returns a boolean denoting whether the i'th element is less than the j'th element.
func (p *Vector) Less(i, j int) bool { return (*p)[i].(LessInterface).Less((*p)[j]) }
// sort.Interface support
// Less returns a boolean denoting whether the i'th element is less than the j'th element.
func (p *IntVector) Less(i, j int) bool { return (*p)[i] < (*p)[j] }
// Less returns a boolean denoting whether the i'th element is less than the j'th element.
func (p *StringVector) Less(i, j int) bool { return (*p)[i] < (*p)[j] }

188
src/pkg/container/vector/intvector.go
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@ -1,188 +0,0 @@
// Copyright 2009 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.
// CAUTION: If this file is not vector.go, it was generated
// automatically from vector.go - DO NOT EDIT in that case!
package vector
func (p *IntVector) realloc(length, capacity int) (b []int) {
if capacity < initialSize {
capacity = initialSize
}
if capacity < length {
capacity = length
}
b = make(IntVector, length, capacity)
copy(b, *p)
*p = b
return
}
// Insert n elements at position i.
func (p *IntVector) Expand(i, n int) {
a := *p
// make sure we have enough space
len0 := len(a)
len1 := len0 + n
if len1 <= cap(a) {
// enough space - just expand
a = a[0:len1]
} else {
// not enough space - double capacity
capb := cap(a) * 2
if capb < len1 {
// still not enough - use required length
capb = len1
}
// capb >= len1
a = p.realloc(len1, capb)
}
// make a hole
for j := len0 - 1; j >= i; j-- {
a[j+n] = a[j]
}
*p = a
}
// Insert n elements at the end of a vector.
func (p *IntVector) Extend(n int) { p.Expand(len(*p), n) }
// Resize changes the length and capacity of a vector.
// If the new length is shorter than the current length, Resize discards
// trailing elements. If the new length is longer than the current length,
// Resize adds the respective zero values for the additional elements. The capacity
// parameter is ignored unless the new length or capacity is longer than the current
// capacity. The resized vector's capacity may be larger than the requested capacity.
func (p *IntVector) Resize(length, capacity int) *IntVector {
a := *p
if length > cap(a) || capacity > cap(a) {
// not enough space or larger capacity requested explicitly
a = p.realloc(length, capacity)
} else if length < len(a) {
// clear trailing elements
for i := range a[length:] {
var zero int
a[length+i] = zero
}
}
*p = a[0:length]
return p
}
// Len returns the number of elements in the vector.
// Same as len(*p).
func (p *IntVector) Len() int { return len(*p) }
// Cap returns the capacity of the vector; that is, the
// maximum length the vector can grow without resizing.
// Same as cap(*p).
func (p *IntVector) Cap() int { return cap(*p) }
// At returns the i'th element of the vector.
func (p *IntVector) At(i int) int { return (*p)[i] }
// Set sets the i'th element of the vector to value x.
func (p *IntVector) Set(i int, x int) { (*p)[i] = x }
// Last returns the element in the vector of highest index.
func (p *IntVector) Last() int { return (*p)[len(*p)-1] }
// Copy makes a copy of the vector and returns it.
func (p *IntVector) Copy() IntVector {
arr := make(IntVector, len(*p))
copy(arr, *p)
return arr
}
// Insert inserts into the vector an element of value x before
// the current element at index i.
func (p *IntVector) Insert(i int, x int) {
p.Expand(i, 1)
(*p)[i] = x
}
// Delete deletes the i'th element of the vector. The gap is closed so the old
// element at index i+1 has index i afterwards.
func (p *IntVector) Delete(i int) {
a := *p
n := len(a)
copy(a[i:n-1], a[i+1:n])
var zero int
a[n-1] = zero // support GC, zero out entry
*p = a[0 : n-1]
}
// InsertVector inserts into the vector the contents of the vector
// x such that the 0th element of x appears at index i after insertion.
func (p *IntVector) InsertVector(i int, x *IntVector) {
b := *x
p.Expand(i, len(b))
copy((*p)[i:i+len(b)], b)
}
// Cut deletes elements i through j-1, inclusive.
func (p *IntVector) Cut(i, j int) {
a := *p
n := len(a)
m := n - (j - i)
copy(a[i:m], a[j:n])
for k := m; k < n; k++ { //TODO(bflm) don't zero out the elements unless it's a Vector.
var zero int
a[k] = zero // support GC, zero out entries
}
*p = a[0:m]
}
// Slice returns a new sub-vector by slicing the old one to extract slice [i:j].
// The elements are copied. The original vector is unchanged.
func (p *IntVector) Slice(i, j int) *IntVector {
var s IntVector
s.realloc(j-i, 0) // will fail in Init() if j < i
copy(s, (*p)[i:j])
return &s
}
// Convenience wrappers
// Push appends x to the end of the vector.
func (p *IntVector) Push(x int) { p.Insert(len(*p), x) }
// Pop deletes the last element of the vector.
func (p *IntVector) Pop() int {
a := *p
i := len(a) - 1
x := a[i]
var zero int
a[i] = zero // support GC, zero out entry
*p = a[0:i]
return x
}
// AppendVector appends the entire vector x to the end of this vector.
func (p *IntVector) AppendVector(x *IntVector) { p.InsertVector(len(*p), x) }
// Swap exchanges the elements at indexes i and j.
func (p *IntVector) Swap(i, j int) {
a := *p
a[i], a[j] = a[j], a[i]
}
// Do calls function f for each element of the vector, in order.
// The behavior of Do is undefined if f changes *p.
func (p *IntVector) Do(f func(elem int)) {
for _, e := range *p {
f(e)
}
}

331
src/pkg/container/vector/intvector_test.go
View File

@ -1,331 +0,0 @@
// Copyright 2009 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.
// CAUTION: If this file is not vector_test.go, it was generated
// automatically from vector_test.go - DO NOT EDIT in that case!
package vector
import "testing"
func TestIntZeroLen(t *testing.T) {
a := new(IntVector)
if a.Len() != 0 {
t.Errorf("%T: B1) expected 0, got %d", a, a.Len())
}
if len(*a) != 0 {
t.Errorf("%T: B2) expected 0, got %d", a, len(*a))
}
var b IntVector
if b.Len() != 0 {
t.Errorf("%T: B3) expected 0, got %d", b, b.Len())
}
if len(b) != 0 {
t.Errorf("%T: B4) expected 0, got %d", b, len(b))
}
}
func TestIntResize(t *testing.T) {
var a IntVector
checkSize(t, &a, 0, 0)
checkSize(t, a.Resize(0, 5), 0, 5)
checkSize(t, a.Resize(1, 0), 1, 5)
checkSize(t, a.Resize(10, 0), 10, 10)
checkSize(t, a.Resize(5, 0), 5, 10)
checkSize(t, a.Resize(3, 8), 3, 10)
checkSize(t, a.Resize(0, 100), 0, 100)
checkSize(t, a.Resize(11, 100), 11, 100)
}
func TestIntResize2(t *testing.T) {
var a IntVector
checkSize(t, &a, 0, 0)
a.Push(int2IntValue(1))
a.Push(int2IntValue(2))
a.Push(int2IntValue(3))
a.Push(int2IntValue(4))
checkSize(t, &a, 4, 4)
checkSize(t, a.Resize(10, 0), 10, 10)
for i := 4; i < a.Len(); i++ {
if a.At(i) != intzero {
t.Errorf("%T: expected a.At(%d) == %v; found %v!", a, i, intzero, a.At(i))
}
}
for i := 4; i < len(a); i++ {
if a[i] != intzero {
t.Errorf("%T: expected a[%d] == %v; found %v", a, i, intzero, a[i])
}
}
}
func checkIntZero(t *testing.T, a *IntVector, i int) {
for j := 0; j < i; j++ {
if a.At(j) == intzero {
t.Errorf("%T: 1 expected a.At(%d) == %d; found %v", a, j, j, a.At(j))
}
if (*a)[j] == intzero {
t.Errorf("%T: 2 expected (*a)[%d] == %d; found %v", a, j, j, (*a)[j])
}
}
for ; i < a.Len(); i++ {
if a.At(i) != intzero {
t.Errorf("%T: 3 expected a.At(%d) == %v; found %v", a, i, intzero, a.At(i))
}
if (*a)[i] != intzero {
t.Errorf("%T: 4 expected (*a)[%d] == %v; found %v", a, i, intzero, (*a)[i])
}
}
}
func TestIntTrailingElements(t *testing.T) {
var a IntVector
for i := 0; i < 10; i++ {
a.Push(int2IntValue(i + 1))
}
checkIntZero(t, &a, 10)
checkSize(t, &a, 10, 16)
checkSize(t, a.Resize(5, 0), 5, 16)
checkSize(t, a.Resize(10, 0), 10, 16)
checkIntZero(t, &a, 5)
}
func TestIntAccess(t *testing.T) {
const n = 100
var a IntVector
a.Resize(n, 0)
for i := 0; i < n; i++ {
a.Set(i, int2IntValue(val(i)))
}
for i := 0; i < n; i++ {
if elem2IntValue(a.At(i)) != int2IntValue(val(i)) {
t.Error(i)
}
}
var b IntVector
b.Resize(n, 0)
for i := 0; i < n; i++ {
b[i] = int2IntValue(val(i))
}
for i := 0; i < n; i++ {
if elem2IntValue(b[i]) != int2IntValue(val(i)) {
t.Error(i)
}
}
}
func TestIntInsertDeleteClear(t *testing.T) {
const n = 100
var a IntVector
for i := 0; i < n; i++ {
if a.Len() != i {
t.Errorf("%T: A) wrong Len() %d (expected %d)", a, a.Len(), i)
}
if len(a) != i {
t.Errorf("%T: A) wrong len() %d (expected %d)", a, len(a), i)
}
a.Insert(0, int2IntValue(val(i)))
if elem2IntValue(a.Last()) != int2IntValue(val(0)) {
t.Errorf("%T: B", a)
}
}
for i := n - 1; i >= 0; i-- {
if elem2IntValue(a.Last()) != int2IntValue(val(0)) {
t.Errorf("%T: C", a)
}
if elem2IntValue(a.At(0)) != int2IntValue(val(i)) {
t.Errorf("%T: D", a)
}
if elem2IntValue(a[0]) != int2IntValue(val(i)) {
t.Errorf("%T: D2", a)
}
a.Delete(0)
if a.Len() != i {
t.Errorf("%T: E) wrong Len() %d (expected %d)", a, a.Len(), i)
}
if len(a) != i {
t.Errorf("%T: E) wrong len() %d (expected %d)", a, len(a), i)
}
}
if a.Len() != 0 {
t.Errorf("%T: F) wrong Len() %d (expected 0)", a, a.Len())
}
if len(a) != 0 {
t.Errorf("%T: F) wrong len() %d (expected 0)", a, len(a))
}
for i := 0; i < n; i++ {
a.Push(int2IntValue(val(i)))
if a.Len() != i+1 {
t.Errorf("%T: G) wrong Len() %d (expected %d)", a, a.Len(), i+1)
}
if len(a) != i+1 {
t.Errorf("%T: G) wrong len() %d (expected %d)", a, len(a), i+1)
}
if elem2IntValue(a.Last()) != int2IntValue(val(i)) {
t.Errorf("%T: H", a)
}
}
a.Resize(0, 0)
if a.Len() != 0 {
t.Errorf("%T: I wrong Len() %d (expected 0)", a, a.Len())
}
if len(a) != 0 {
t.Errorf("%T: I wrong len() %d (expected 0)", a, len(a))
}
const m = 5
for j := 0; j < m; j++ {
a.Push(int2IntValue(j))
for i := 0; i < n; i++ {
x := val(i)
a.Push(int2IntValue(x))
if elem2IntValue(a.Pop()) != int2IntValue(x) {
t.Errorf("%T: J", a)
}
if a.Len() != j+1 {
t.Errorf("%T: K) wrong Len() %d (expected %d)", a, a.Len(), j+1)
}
if len(a) != j+1 {
t.Errorf("%T: K) wrong len() %d (expected %d)", a, len(a), j+1)
}
}
}
if a.Len() != m {
t.Errorf("%T: L) wrong Len() %d (expected %d)", a, a.Len(), m)
}
if len(a) != m {
t.Errorf("%T: L) wrong len() %d (expected %d)", a, len(a), m)
}
}
func verify_sliceInt(t *testing.T, x *IntVector, elt, i, j int) {
for k := i; k < j; k++ {
if elem2IntValue(x.At(k)) != int2IntValue(elt) {
t.Errorf("%T: M) wrong [%d] element %v (expected %v)", x, k, elem2IntValue(x.At(k)), int2IntValue(elt))
}
}
s := x.Slice(i, j)
for k, n := 0, j-i; k < n; k++ {
if elem2IntValue(s.At(k)) != int2IntValue(elt) {
t.Errorf("%T: N) wrong [%d] element %v (expected %v)", x, k, elem2IntValue(x.At(k)), int2IntValue(elt))
}
}
}
func verify_patternInt(t *testing.T, x *IntVector, a, b, c int) {
n := a + b + c
if x.Len() != n {
t.Errorf("%T: O) wrong Len() %d (expected %d)", x, x.Len(), n)
}
if len(*x) != n {
t.Errorf("%T: O) wrong len() %d (expected %d)", x, len(*x), n)
}
verify_sliceInt(t, x, 0, 0, a)
verify_sliceInt(t, x, 1, a, a+b)
verify_sliceInt(t, x, 0, a+b, n)
}
func make_vectorInt(elt, len int) *IntVector {
x := new(IntVector).Resize(len, 0)
for i := 0; i < len; i++ {
x.Set(i, int2IntValue(elt))
}
return x
}
func TestIntInsertVector(t *testing.T) {
// 1
a := make_vectorInt(0, 0)
b := make_vectorInt(1, 10)
a.InsertVector(0, b)
verify_patternInt(t, a, 0, 10, 0)
// 2
a = make_vectorInt(0, 10)
b = make_vectorInt(1, 0)
a.InsertVector(5, b)
verify_patternInt(t, a, 5, 0, 5)
// 3
a = make_vectorInt(0, 10)
b = make_vectorInt(1, 3)
a.InsertVector(3, b)
verify_patternInt(t, a, 3, 3, 7)
// 4
a = make_vectorInt(0, 10)
b = make_vectorInt(1, 1000)
a.InsertVector(8, b)
verify_patternInt(t, a, 8, 1000, 2)
}
func TestIntDo(t *testing.T) {
const n = 25
const salt = 17
a := new(IntVector).Resize(n, 0)
for i := 0; i < n; i++ {
a.Set(i, int2IntValue(salt*i))
}
count := 0
a.Do(func(e int) {
i := intf2IntValue(e)
if i != int2IntValue(count*salt) {
t.Error(tname(a), "value at", count, "should be", count*salt, "not", i)
}
count++
})
if count != n {
t.Error(tname(a), "should visit", n, "values; did visit", count)
}
b := new(IntVector).Resize(n, 0)
for i := 0; i < n; i++ {
(*b)[i] = int2IntValue(salt * i)
}
count = 0
b.Do(func(e int) {
i := intf2IntValue(e)
if i != int2IntValue(count*salt) {
t.Error(tname(b), "b) value at", count, "should be", count*salt, "not", i)
}
count++
})
if count != n {
t.Error(tname(b), "b) should visit", n, "values; did visit", count)
}
var c IntVector
c.Resize(n, 0)
for i := 0; i < n; i++ {
c[i] = int2IntValue(salt * i)
}
count = 0
c.Do(func(e int) {
i := intf2IntValue(e)
if i != int2IntValue(count*salt) {
t.Error(tname(c), "c) value at", count, "should be", count*salt, "not", i)
}
count++
})
if count != n {
t.Error(tname(c), "c) should visit", n, "values; did visit", count)
}
}
func TestIntVectorCopy(t *testing.T) {
// verify Copy() returns a copy, not simply a slice of the original vector
const Len = 10
var src IntVector
for i := 0; i < Len; i++ {
src.Push(int2IntValue(i * i))
}
dest := src.Copy()
for i := 0; i < Len; i++ {
src[i] = int2IntValue(-1)
v := elem2IntValue(dest[i])
if v != int2IntValue(i*i) {
t.Error(tname(src), "expected", i*i, "got", v)
}
}
}

67
src/pkg/container/vector/nogen_test.go
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@ -1,67 +0,0 @@
// Copyright 2009 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.
package vector
import (
"fmt"
"sort"
"testing"
)
var (
zero interface{}
intzero int
strzero string
)
func int2Value(x int) int { return x }
func int2IntValue(x int) int { return x }
func int2StrValue(x int) string { return string(x) }
func elem2Value(x interface{}) int { return x.(int) }
func elem2IntValue(x int) int { return x }
func elem2StrValue(x string) string { return x }
func intf2Value(x interface{}) int { return x.(int) }
func intf2IntValue(x interface{}) int { return x.(int) }
func intf2StrValue(x interface{}) string { return x.(string) }
type VectorInterface interface {
Len() int
Cap() int
}
func checkSize(t *testing.T, v VectorInterface, len, cap int) {
if v.Len() != len {
t.Errorf("%T expected len = %d; found %d", v, len, v.Len())
}
if v.Cap() < cap {
t.Errorf("%T expected cap >= %d; found %d", v, cap, v.Cap())
}
}
func val(i int) int { return i*991 - 1234 }
func TestSorting(t *testing.T) {
const n = 100
a := new(IntVector).Resize(n, 0)
for i := n - 1; i >= 0; i-- {
a.Set(i, n-1-i)
}
if sort.IsSorted(a) {
t.Error("int vector not sorted")
}
b := new(StringVector).Resize(n, 0)
for i := n - 1; i >= 0; i-- {
b.Set(i, fmt.Sprint(n-1-i))
}
if sort.IsSorted(b) {
t.Error("string vector not sorted")
}
}
func tname(x interface{}) string { return fmt.Sprintf("%T: ", x) }

123
src/pkg/container/vector/numbers_test.go
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@ -1,123 +0,0 @@
// Copyright 2009 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.
package vector
import (
"fmt"
"runtime"
"strings"
"testing"
)
const memTestN = 1000000
func s(n uint64) string {
str := fmt.Sprintf("%d", n)
lens := len(str)
a := make([]string, (lens+2)/3)
start := lens
for i := range a {
start -= 3
if start < 0 {
start = 0
}
a[len(a)-i-1] = str[start:lens]
lens -= 3
}
return strings.Join(a, " ")
}
func TestVectorNums(t *testing.T) {
if testing.Short() {
return
}
var v Vector
c := int(0)
runtime.GC()
m0 := runtime.MemStats
v.Resize(memTestN, memTestN)
for i := 0; i < memTestN; i++ {
v.Set(i, c)
}
runtime.GC()
m := runtime.MemStats
v.Resize(0, 0)
runtime.GC()
n := m.Alloc - m0.Alloc
t.Logf("%T.Push(%#v), n = %s: Alloc/n = %.2f\n", v, c, s(memTestN), float64(n)/memTestN)
}
func TestIntVectorNums(t *testing.T) {
if testing.Short() {
return
}
var v IntVector
c := int(0)
runtime.GC()
m0 := runtime.MemStats
v.Resize(memTestN, memTestN)
for i := 0; i < memTestN; i++ {
v.Set(i, c)
}
runtime.GC()
m := runtime.MemStats
v.Resize(0, 0)
runtime.GC()
n := m.Alloc - m0.Alloc
t.Logf("%T.Push(%#v), n = %s: Alloc/n = %.2f\n", v, c, s(memTestN), float64(n)/memTestN)
}
func TestStringVectorNums(t *testing.T) {
if testing.Short() {
return
}
var v StringVector
c := ""
runtime.GC()
m0 := runtime.MemStats
v.Resize(memTestN, memTestN)
for i := 0; i < memTestN; i++ {
v.Set(i, c)
}
runtime.GC()
m := runtime.MemStats
v.Resize(0, 0)
runtime.GC()
n := m.Alloc - m0.Alloc
t.Logf("%T.Push(%#v), n = %s: Alloc/n = %.2f\n", v, c, s(memTestN), float64(n)/memTestN)
}
func BenchmarkVectorNums(b *testing.B) {
c := int(0)
var v Vector
b.StopTimer()
runtime.GC()
b.StartTimer()
for i := 0; i < b.N; i++ {
v.Push(c)
}
}
func BenchmarkIntVectorNums(b *testing.B) {
c := int(0)
var v IntVector
b.StopTimer()
runtime.GC()
b.StartTimer()
for i := 0; i < b.N; i++ {
v.Push(c)
}
}
func BenchmarkStringVectorNums(b *testing.B) {
c := ""
var v StringVector
b.StopTimer()
runtime.GC()
b.StartTimer()
for i := 0; i < b.N; i++ {
v.Push(c)
}
}

188
src/pkg/container/vector/stringvector.go
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@ -1,188 +0,0 @@
// Copyright 2009 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.
// CAUTION: If this file is not vector.go, it was generated
// automatically from vector.go - DO NOT EDIT in that case!
package vector
func (p *StringVector) realloc(length, capacity int) (b []string) {
if capacity < initialSize {
capacity = initialSize
}
if capacity < length {
capacity = length
}
b = make(StringVector, length, capacity)
copy(b, *p)
*p = b
return
}
// Insert n elements at position i.
func (p *StringVector) Expand(i, n int) {
a := *p
// make sure we have enough space
len0 := len(a)
len1 := len0 + n
if len1 <= cap(a) {
// enough space - just expand
a = a[0:len1]
} else {
// not enough space - double capacity
capb := cap(a) * 2
if capb < len1 {
// still not enough - use required length
capb = len1
}
// capb >= len1
a = p.realloc(len1, capb)
}
// make a hole
for j := len0 - 1; j >= i; j-- {
a[j+n] = a[j]
}
*p = a
}
// Insert n elements at the end of a vector.
func (p *StringVector) Extend(n int) { p.Expand(len(*p), n) }
// Resize changes the length and capacity of a vector.
// If the new length is shorter than the current length, Resize discards
// trailing elements. If the new length is longer than the current length,
// Resize adds the respective zero values for the additional elements. The capacity
// parameter is ignored unless the new length or capacity is longer than the current
// capacity. The resized vector's capacity may be larger than the requested capacity.
func (p *StringVector) Resize(length, capacity int) *StringVector {
a := *p
if length > cap(a) || capacity > cap(a) {
// not enough space or larger capacity requested explicitly
a = p.realloc(length, capacity)
} else if length < len(a) {
// clear trailing elements
for i := range a[length:] {
var zero string
a[length+i] = zero
}
}
*p = a[0:length]
return p
}
// Len returns the number of elements in the vector.
// Same as len(*p).
func (p *StringVector) Len() int { return len(*p) }
// Cap returns the capacity of the vector; that is, the
// maximum length the vector can grow without resizing.
// Same as cap(*p).
func (p *StringVector) Cap() int { return cap(*p) }
// At returns the i'th element of the vector.
func (p *StringVector) At(i int) string { return (*p)[i] }
// Set sets the i'th element of the vector to value x.
func (p *StringVector) Set(i int, x string) { (*p)[i] = x }
// Last returns the element in the vector of highest index.
func (p *StringVector) Last() string { return (*p)[len(*p)-1] }
// Copy makes a copy of the vector and returns it.
func (p *StringVector) Copy() StringVector {
arr := make(StringVector, len(*p))
copy(arr, *p)
return arr
}
// Insert inserts into the vector an element of value x before
// the current element at index i.
func (p *StringVector) Insert(i int, x string) {
p.Expand(i, 1)
(*p)[i] = x
}
// Delete deletes the i'th element of the vector. The gap is closed so the old
// element at index i+1 has index i afterwards.
func (p *StringVector) Delete(i int) {
a := *p
n := len(a)
copy(a[i:n-1], a[i+1:n])
var zero string
a[n-1] = zero // support GC, zero out entry
*p = a[0 : n-1]
}
// InsertVector inserts into the vector the contents of the vector
// x such that the 0th element of x appears at index i after insertion.
func (p *StringVector) InsertVector(i int, x *StringVector) {
b := *x
p.Expand(i, len(b))
copy((*p)[i:i+len(b)], b)
}
// Cut deletes elements i through j-1, inclusive.
func (p *StringVector) Cut(i, j int) {
a := *p
n := len(a)
m := n - (j - i)
copy(a[i:m], a[j:n])
for k := m; k < n; k++ { //TODO(bflm) don't zero out the elements unless it's a Vector.
var zero string
a[k] = zero // support GC, zero out entries
}
*p = a[0:m]
}
// Slice returns a new sub-vector by slicing the old one to extract slice [i:j].
// The elements are copied. The original vector is unchanged.
func (p *StringVector) Slice(i, j int) *StringVector {
var s StringVector
s.realloc(j-i, 0) // will fail in Init() if j < i
copy(s, (*p)[i:j])
return &s
}
// Convenience wrappers
// Push appends x to the end of the vector.
func (p *StringVector) Push(x string) { p.Insert(len(*p), x) }
// Pop deletes the last element of the vector.
func (p *StringVector) Pop() string {
a := *p
i := len(a) - 1
x := a[i]
var zero string
a[i] = zero // support GC, zero out entry
*p = a[0:i]
return x
}
// AppendVector appends the entire vector x to the end of this vector.
func (p *StringVector) AppendVector(x *StringVector) { p.InsertVector(len(*p), x) }
// Swap exchanges the elements at indexes i and j.
func (p *StringVector) Swap(i, j int) {
a := *p
a[i], a[j] = a[j], a[i]
}
// Do calls function f for each element of the vector, in order.
// The behavior of Do is undefined if f changes *p.
func (p *StringVector) Do(f func(elem string)) {
for _, e := range *p {
f(e)
}
}

331
src/pkg/container/vector/stringvector_test.go
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@ -1,331 +0,0 @@
// Copyright 2009 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.
// CAUTION: If this file is not vector_test.go, it was generated
// automatically from vector_test.go - DO NOT EDIT in that case!
package vector
import "testing"
func TestStrZeroLen(t *testing.T) {
a := new(StringVector)
if a.Len() != 0 {
t.Errorf("%T: B1) expected 0, got %d", a, a.Len())
}
if len(*a) != 0 {
t.Errorf("%T: B2) expected 0, got %d", a, len(*a))
}
var b StringVector
if b.Len() != 0 {
t.Errorf("%T: B3) expected 0, got %d", b, b.Len())
}
if len(b) != 0 {
t.Errorf("%T: B4) expected 0, got %d", b, len(b))
}
}
func TestStrResize(t *testing.T) {
var a StringVector
checkSize(t, &a, 0, 0)
checkSize(t, a.Resize(0, 5), 0, 5)
checkSize(t, a.Resize(1, 0), 1, 5)
checkSize(t, a.Resize(10, 0), 10, 10)
checkSize(t, a.Resize(5, 0), 5, 10)
checkSize(t, a.Resize(3, 8), 3, 10)
checkSize(t, a.Resize(0, 100), 0, 100)
checkSize(t, a.Resize(11, 100), 11, 100)
}
func TestStrResize2(t *testing.T) {
var a StringVector
checkSize(t, &a, 0, 0)
a.Push(int2StrValue(1))
a.Push(int2StrValue(2))
a.Push(int2StrValue(3))
a.Push(int2StrValue(4))
checkSize(t, &a, 4, 4)
checkSize(t, a.Resize(10, 0), 10, 10)
for i := 4; i < a.Len(); i++ {
if a.At(i) != strzero {
t.Errorf("%T: expected a.At(%d) == %v; found %v!", a, i, strzero, a.At(i))
}
}
for i := 4; i < len(a); i++ {
if a[i] != strzero {
t.Errorf("%T: expected a[%d] == %v; found %v", a, i, strzero, a[i])
}
}
}
func checkStrZero(t *testing.T, a *StringVector, i int) {
for j := 0; j < i; j++ {
if a.At(j) == strzero {
t.Errorf("%T: 1 expected a.At(%d) == %d; found %v", a, j, j, a.At(j))
}
if (*a)[j] == strzero {
t.Errorf("%T: 2 expected (*a)[%d] == %d; found %v", a, j, j, (*a)[j])
}
}
for ; i < a.Len(); i++ {
if a.At(i) != strzero {
t.Errorf("%T: 3 expected a.At(%d) == %v; found %v", a, i, strzero, a.At(i))
}
if (*a)[i] != strzero {
t.Errorf("%T: 4 expected (*a)[%d] == %v; found %v", a, i, strzero, (*a)[i])
}
}
}
func TestStrTrailingElements(t *testing.T) {
var a StringVector
for i := 0; i < 10; i++ {
a.Push(int2StrValue(i + 1))
}
checkStrZero(t, &a, 10)
checkSize(t, &a, 10, 16)
checkSize(t, a.Resize(5, 0), 5, 16)
checkSize(t, a.Resize(10, 0), 10, 16)
checkStrZero(t, &a, 5)
}
func TestStrAccess(t *testing.T) {
const n = 100
var a StringVector
a.Resize(n, 0)
for i := 0; i < n; i++ {
a.Set(i, int2StrValue(val(i)))
}
for i := 0; i < n; i++ {
if elem2StrValue(a.At(i)) != int2StrValue(val(i)) {
t.Error(i)
}
}
var b StringVector
b.Resize(n, 0)
for i := 0; i < n; i++ {
b[i] = int2StrValue(val(i))
}
for i := 0; i < n; i++ {
if elem2StrValue(b[i]) != int2StrValue(val(i)) {
t.Error(i)
}
}
}
func TestStrInsertDeleteClear(t *testing.T) {
const n = 100
var a StringVector
for i := 0; i < n; i++ {
if a.Len() != i {
t.Errorf("%T: A) wrong Len() %d (expected %d)", a, a.Len(), i)
}
if len(a) != i {
t.Errorf("%T: A) wrong len() %d (expected %d)", a, len(a), i)
}
a.Insert(0, int2StrValue(val(i)))
if elem2StrValue(a.Last()) != int2StrValue(val(0)) {
t.Errorf("%T: B", a)
}
}
for i := n - 1; i >= 0; i-- {
if elem2StrValue(a.Last()) != int2StrValue(val(0)) {
t.Errorf("%T: C", a)
}
if elem2StrValue(a.At(0)) != int2StrValue(val(i)) {
t.Errorf("%T: D", a)
}
if elem2StrValue(a[0]) != int2StrValue(val(i)) {
t.Errorf("%T: D2", a)
}
a.Delete(0)
if a.Len() != i {
t.Errorf("%T: E) wrong Len() %d (expected %d)", a, a.Len(), i)
}
if len(a) != i {
t.Errorf("%T: E) wrong len() %d (expected %d)", a, len(a), i)
}
}
if a.Len() != 0 {
t.Errorf("%T: F) wrong Len() %d (expected 0)", a, a.Len())
}
if len(a) != 0 {
t.Errorf("%T: F) wrong len() %d (expected 0)", a, len(a))
}
for i := 0; i < n; i++ {
a.Push(int2StrValue(val(i)))
if a.Len() != i+1 {
t.Errorf("%T: G) wrong Len() %d (expected %d)", a, a.Len(), i+1)
}
if len(a) != i+1 {
t.Errorf("%T: G) wrong len() %d (expected %d)", a, len(a), i+1)
}
if elem2StrValue(a.Last()) != int2StrValue(val(i)) {
t.Errorf("%T: H", a)
}
}
a.Resize(0, 0)
if a.Len() != 0 {
t.Errorf("%T: I wrong Len() %d (expected 0)", a, a.Len())
}
if len(a) != 0 {
t.Errorf("%T: I wrong len() %d (expected 0)", a, len(a))
}
const m = 5
for j := 0; j < m; j++ {
a.Push(int2StrValue(j))
for i := 0; i < n; i++ {
x := val(i)
a.Push(int2StrValue(x))
if elem2StrValue(a.Pop()) != int2StrValue(x) {
t.Errorf("%T: J", a)
}
if a.Len() != j+1 {
t.Errorf("%T: K) wrong Len() %d (expected %d)", a, a.Len(), j+1)
}
if len(a) != j+1 {
t.Errorf("%T: K) wrong len() %d (expected %d)", a, len(a), j+1)
}
}
}
if a.Len() != m {
t.Errorf("%T: L) wrong Len() %d (expected %d)", a, a.Len(), m)
}
if len(a) != m {
t.Errorf("%T: L) wrong len() %d (expected %d)", a, len(a), m)
}
}
func verify_sliceStr(t *testing.T, x *StringVector, elt, i, j int) {
for k := i; k < j; k++ {
if elem2StrValue(x.At(k)) != int2StrValue(elt) {
t.Errorf("%T: M) wrong [%d] element %v (expected %v)", x, k, elem2StrValue(x.At(k)), int2StrValue(elt))
}
}
s := x.Slice(i, j)
for k, n := 0, j-i; k < n; k++ {
if elem2StrValue(s.At(k)) != int2StrValue(elt) {
t.Errorf("%T: N) wrong [%d] element %v (expected %v)", x, k, elem2StrValue(x.At(k)), int2StrValue(elt))
}
}
}
func verify_patternStr(t *testing.T, x *StringVector, a, b, c int) {
n := a + b + c
if x.Len() != n {
t.Errorf("%T: O) wrong Len() %d (expected %d)", x, x.Len(), n)
}
if len(*x) != n {
t.Errorf("%T: O) wrong len() %d (expected %d)", x, len(*x), n)
}
verify_sliceStr(t, x, 0, 0, a)
verify_sliceStr(t, x, 1, a, a+b)
verify_sliceStr(t, x, 0, a+b, n)
}
func make_vectorStr(elt, len int) *StringVector {
x := new(StringVector).Resize(len, 0)
for i := 0; i < len; i++ {
x.Set(i, int2StrValue(elt))
}
return x
}
func TestStrInsertVector(t *testing.T) {
// 1
a := make_vectorStr(0, 0)
b := make_vectorStr(1, 10)
a.InsertVector(0, b)
verify_patternStr(t, a, 0, 10, 0)
// 2
a = make_vectorStr(0, 10)
b = make_vectorStr(1, 0)
a.InsertVector(5, b)
verify_patternStr(t, a, 5, 0, 5)
// 3
a = make_vectorStr(0, 10)
b = make_vectorStr(1, 3)
a.InsertVector(3, b)
verify_patternStr(t, a, 3, 3, 7)
// 4
a = make_vectorStr(0, 10)
b = make_vectorStr(1, 1000)
a.InsertVector(8, b)
verify_patternStr(t, a, 8, 1000, 2)
}
func TestStrDo(t *testing.T) {
const n = 25
const salt = 17
a := new(StringVector).Resize(n, 0)
for i := 0; i < n; i++ {
a.Set(i, int2StrValue(salt*i))
}
count := 0
a.Do(func(e string) {
i := intf2StrValue(e)
if i != int2StrValue(count*salt) {
t.Error(tname(a), "value at", count, "should be", count*salt, "not", i)
}
count++
})
if count != n {
t.Error(tname(a), "should visit", n, "values; did visit", count)
}
b := new(StringVector).Resize(n, 0)
for i := 0; i < n; i++ {
(*b)[i] = int2StrValue(salt * i)
}
count = 0
b.Do(func(e string) {
i := intf2StrValue(e)
if i != int2StrValue(count*salt) {
t.Error(tname(b), "b) value at", count, "should be", count*salt, "not", i)
}
count++
})
if count != n {
t.Error(tname(b), "b) should visit", n, "values; did visit", count)
}
var c StringVector
c.Resize(n, 0)
for i := 0; i < n; i++ {
c[i] = int2StrValue(salt * i)
}
count = 0
c.Do(func(e string) {
i := intf2StrValue(e)
if i != int2StrValue(count*salt) {
t.Error(tname(c), "c) value at", count, "should be", count*salt, "not", i)
}
count++
})
if count != n {
t.Error(tname(c), "c) should visit", n, "values; did visit", count)
}
}
func TestStrVectorCopy(t *testing.T) {
// verify Copy() returns a copy, not simply a slice of the original vector
const Len = 10
var src StringVector
for i := 0; i < Len; i++ {
src.Push(int2StrValue(i * i))
}
dest := src.Copy()
for i := 0; i < Len; i++ {
src[i] = int2StrValue(-1)
v := elem2StrValue(dest[i])
if v != int2StrValue(i*i) {
t.Error(tname(src), "expected", i*i, "got", v)
}
}
}

188
src/pkg/container/vector/vector.go
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@ -1,188 +0,0 @@
// Copyright 2009 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.
// CAUTION: If this file is not vector.go, it was generated
// automatically from vector.go - DO NOT EDIT in that case!
package vector
func (p *Vector) realloc(length, capacity int) (b []interface{}) {
if capacity < initialSize {
capacity = initialSize
}
if capacity < length {
capacity = length
}
b = make(Vector, length, capacity)
copy(b, *p)
*p = b
return
}
// Insert n elements at position i.
func (p *Vector) Expand(i, n int) {
a := *p
// make sure we have enough space
len0 := len(a)
len1 := len0 + n
if len1 <= cap(a) {
// enough space - just expand
a = a[0:len1]
} else {
// not enough space - double capacity
capb := cap(a) * 2
if capb < len1 {
// still not enough - use required length
capb = len1
}
// capb >= len1
a = p.realloc(len1, capb)
}
// make a hole
for j := len0 - 1; j >= i; j-- {
a[j+n] = a[j]
}
*p = a
}
// Insert n elements at the end of a vector.
func (p *Vector) Extend(n int) { p.Expand(len(*p), n) }
// Resize changes the length and capacity of a vector.
// If the new length is shorter than the current length, Resize discards
// trailing elements. If the new length is longer than the current length,
// Resize adds the respective zero values for the additional elements. The capacity
// parameter is ignored unless the new length or capacity is longer than the current
// capacity. The resized vector's capacity may be larger than the requested capacity.
func (p *Vector) Resize(length, capacity int) *Vector {
a := *p
if length > cap(a) || capacity > cap(a) {
// not enough space or larger capacity requested explicitly
a = p.realloc(length, capacity)
} else if length < len(a) {
// clear trailing elements
for i := range a[length:] {
var zero interface{}
a[length+i] = zero
}
}
*p = a[0:length]
return p
}
// Len returns the number of elements in the vector.
// Same as len(*p).
func (p *Vector) Len() int { return len(*p) }
// Cap returns the capacity of the vector; that is, the
// maximum length the vector can grow without resizing.
// Same as cap(*p).
func (p *Vector) Cap() int { return cap(*p) }
// At returns the i'th element of the vector.
func (p *Vector) At(i int) interface{} { return (*p)[i] }
// Set sets the i'th element of the vector to value x.
func (p *Vector) Set(i int, x interface{}) { (*p)[i] = x }
// Last returns the element in the vector of highest index.
func (p *Vector) Last() interface{} { return (*p)[len(*p)-1] }
// Copy makes a copy of the vector and returns it.
func (p *Vector) Copy() Vector {
arr := make(Vector, len(*p))
copy(arr, *p)
return arr
}
// Insert inserts into the vector an element of value x before
// the current element at index i.
func (p *Vector) Insert(i int, x interface{}) {
p.Expand(i, 1)
(*p)[i] = x
}
// Delete deletes the i'th element of the vector. The gap is closed so the old
// element at index i+1 has index i afterwards.
func (p *Vector) Delete(i int) {
a := *p
n := len(a)
copy(a[i:n-1], a[i+1:n])
var zero interface{}
a[n-1] = zero // support GC, zero out entry
*p = a[0 : n-1]
}
// InsertVector inserts into the vector the contents of the vector
// x such that the 0th element of x appears at index i after insertion.
func (p *Vector) InsertVector(i int, x *Vector) {
b := *x
p.Expand(i, len(b))
copy((*p)[i:i+len(b)], b)
}
// Cut deletes elements i through j-1, inclusive.
func (p *Vector) Cut(i, j int) {
a := *p
n := len(a)
m := n - (j - i)
copy(a[i:m], a[j:n])
for k := m; k < n; k++ { //TODO(bflm) don't zero out the elements unless it's a Vector.
var zero interface{}
a[k] = zero // support GC, zero out entries
}
*p = a[0:m]
}
// Slice returns a new sub-vector by slicing the old one to extract slice [i:j].
// The elements are copied. The original vector is unchanged.
func (p *Vector) Slice(i, j int) *Vector {
var s Vector
s.realloc(j-i, 0) // will fail in Init() if j < i
copy(s, (*p)[i:j])
return &s
}
// Convenience wrappers
// Push appends x to the end of the vector.
func (p *Vector) Push(x interface{}) { p.Insert(len(*p), x) }
// Pop deletes the last element of the vector.
func (p *Vector) Pop() interface{} {
a := *p
i := len(a) - 1
x := a[i]
var zero interface{}
a[i] = zero // support GC, zero out entry
*p = a[0:i]
return x
}
// AppendVector appends the entire vector x to the end of this vector.
func (p *Vector) AppendVector(x *Vector) { p.InsertVector(len(*p), x) }
// Swap exchanges the elements at indexes i and j.
func (p *Vector) Swap(i, j int) {
a := *p
a[i], a[j] = a[j], a[i]
}
// Do calls function f for each element of the vector, in order.
// The behavior of Do is undefined if f changes *p.
func (p *Vector) Do(f func(elem interface{})) {
for _, e := range *p {
f(e)
}
}

331
src/pkg/container/vector/vector_test.go
View File

@ -1,331 +0,0 @@
// Copyright 2009 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.
// CAUTION: If this file is not vector_test.go, it was generated
// automatically from vector_test.go - DO NOT EDIT in that case!
package vector
import "testing"
func TestZeroLen(t *testing.T) {
a := new(Vector)
if a.Len() != 0 {
t.Errorf("%T: B1) expected 0, got %d", a, a.Len())
}
if len(*a) != 0 {
t.Errorf("%T: B2) expected 0, got %d", a, len(*a))
}
var b Vector
if b.Len() != 0 {
t.Errorf("%T: B3) expected 0, got %d", b, b.Len())
}
if len(b) != 0 {
t.Errorf("%T: B4) expected 0, got %d", b, len(b))
}
}
func TestResize(t *testing.T) {
var a Vector
checkSize(t, &a, 0, 0)
checkSize(t, a.Resize(0, 5), 0, 5)
checkSize(t, a.Resize(1, 0), 1, 5)
checkSize(t, a.Resize(10, 0), 10, 10)
checkSize(t, a.Resize(5, 0), 5, 10)
checkSize(t, a.Resize(3, 8), 3, 10)
checkSize(t, a.Resize(0, 100), 0, 100)
checkSize(t, a.Resize(11, 100), 11, 100)
}
func TestResize2(t *testing.T) {
var a Vector
checkSize(t, &a, 0, 0)
a.Push(int2Value(1))
a.Push(int2Value(2))
a.Push(int2Value(3))
a.Push(int2Value(4))
checkSize(t, &a, 4, 4)
checkSize(t, a.Resize(10, 0), 10, 10)
for i := 4; i < a.Len(); i++ {
if a.At(i) != zero {
t.Errorf("%T: expected a.At(%d) == %v; found %v!", a, i, zero, a.At(i))
}
}
for i := 4; i < len(a); i++ {
if a[i] != zero {
t.Errorf("%T: expected a[%d] == %v; found %v", a, i, zero, a[i])
}
}
}
func checkZero(t *testing.T, a *Vector, i int) {
for j := 0; j < i; j++ {
if a.At(j) == zero {
t.Errorf("%T: 1 expected a.At(%d) == %d; found %v", a, j, j, a.At(j))
}
if (*a)[j] == zero {
t.Errorf("%T: 2 expected (*a)[%d] == %d; found %v", a, j, j, (*a)[j])
}
}
for ; i < a.Len(); i++ {
if a.At(i) != zero {
t.Errorf("%T: 3 expected a.At(%d) == %v; found %v", a, i, zero, a.At(i))
}
if (*a)[i] != zero {
t.Errorf("%T: 4 expected (*a)[%d] == %v; found %v", a, i, zero, (*a)[i])
}
}
}
func TestTrailingElements(t *testing.T) {
var a Vector
for i := 0; i < 10; i++ {
a.Push(int2Value(i + 1))
}
checkZero(t, &a, 10)
checkSize(t, &a, 10, 16)
checkSize(t, a.Resize(5, 0), 5, 16)
checkSize(t, a.Resize(10, 0), 10, 16)
checkZero(t, &a, 5)
}
func TestAccess(t *testing.T) {
const n = 100
var a Vector
a.Resize(n, 0)
for i := 0; i < n; i++ {
a.Set(i, int2Value(val(i)))
}
for i := 0; i < n; i++ {
if elem2Value(a.At(i)) != int2Value(val(i)) {
t.Error(i)
}
}
var b Vector
b.Resize(n, 0)
for i := 0; i < n; i++ {
b[i] = int2Value(val(i))
}
for i := 0; i < n; i++ {
if elem2Value(b[i]) != int2Value(val(i)) {
t.Error(i)
}
}
}
func TestInsertDeleteClear(t *testing.T) {
const n = 100
var a Vector
for i := 0; i < n; i++ {
if a.Len() != i {
t.Errorf("%T: A) wrong Len() %d (expected %d)", a, a.Len(), i)
}
if len(a) != i {
t.Errorf("%T: A) wrong len() %d (expected %d)", a, len(a), i)
}
a.Insert(0, int2Value(val(i)))
if elem2Value(a.Last()) != int2Value(val(0)) {
t.Errorf("%T: B", a)
}
}
for i := n - 1; i >= 0; i-- {
if elem2Value(a.Last()) != int2Value(val(0)) {
t.Errorf("%T: C", a)
}
if elem2Value(a.At(0)) != int2Value(val(i)) {
t.Errorf("%T: D", a)
}
if elem2Value(a[0]) != int2Value(val(i)) {
t.Errorf("%T: D2", a)
}
a.Delete(0)
if a.Len() != i {
t.Errorf("%T: E) wrong Len() %d (expected %d)", a, a.Len(), i)
}
if len(a) != i {
t.Errorf("%T: E) wrong len() %d (expected %d)", a, len(a), i)
}
}
if a.Len() != 0 {
t.Errorf("%T: F) wrong Len() %d (expected 0)", a, a.Len())
}
if len(a) != 0 {
t.Errorf("%T: F) wrong len() %d (expected 0)", a, len(a))
}
for i := 0; i < n; i++ {
a.Push(int2Value(val(i)))
if a.Len() != i+1 {
t.Errorf("%T: G) wrong Len() %d (expected %d)", a, a.Len(), i+1)
}
if len(a) != i+1 {
t.Errorf("%T: G) wrong len() %d (expected %d)", a, len(a), i+1)
}
if elem2Value(a.Last()) != int2Value(val(i)) {
t.Errorf("%T: H", a)
}
}
a.Resize(0, 0)
if a.Len() != 0 {
t.Errorf("%T: I wrong Len() %d (expected 0)", a, a.Len())
}
if len(a) != 0 {
t.Errorf("%T: I wrong len() %d (expected 0)", a, len(a))
}
const m = 5
for j := 0; j < m; j++ {
a.Push(int2Value(j))
for i := 0; i < n; i++ {
x := val(i)
a.Push(int2Value(x))
if elem2Value(a.Pop()) != int2Value(x) {
t.Errorf("%T: J", a)
}
if a.Len() != j+1 {
t.Errorf("%T: K) wrong Len() %d (expected %d)", a, a.Len(), j+1)
}
if len(a) != j+1 {
t.Errorf("%T: K) wrong len() %d (expected %d)", a, len(a), j+1)
}
}
}
if a.Len() != m {
t.Errorf("%T: L) wrong Len() %d (expected %d)", a, a.Len(), m)
}
if len(a) != m {
t.Errorf("%T: L) wrong len() %d (expected %d)", a, len(a), m)
}
}
func verify_slice(t *testing.T, x *Vector, elt, i, j int) {
for k := i; k < j; k++ {
if elem2Value(x.At(k)) != int2Value(elt) {
t.Errorf("%T: M) wrong [%d] element %v (expected %v)", x, k, elem2Value(x.At(k)), int2Value(elt))
}
}
s := x.Slice(i, j)
for k, n := 0, j-i; k < n; k++ {
if elem2Value(s.At(k)) != int2Value(elt) {
t.Errorf("%T: N) wrong [%d] element %v (expected %v)", x, k, elem2Value(x.At(k)), int2Value(elt))
}
}
}
func verify_pattern(t *testing.T, x *Vector, a, b, c int) {
n := a + b + c
if x.Len() != n {
t.Errorf("%T: O) wrong Len() %d (expected %d)", x, x.Len(), n)
}
if len(*x) != n {
t.Errorf("%T: O) wrong len() %d (expected %d)", x, len(*x), n)
}
verify_slice(t, x, 0, 0, a)
verify_slice(t, x, 1, a, a+b)
verify_slice(t, x, 0, a+b, n)
}
func make_vector(elt, len int) *Vector {
x := new(Vector).Resize(len, 0)
for i := 0; i < len; i++ {
x.Set(i, int2Value(elt))
}
return x
}
func TestInsertVector(t *testing.T) {
// 1
a := make_vector(0, 0)
b := make_vector(1, 10)
a.InsertVector(0, b)
verify_pattern(t, a, 0, 10, 0)
// 2
a = make_vector(0, 10)
b = make_vector(1, 0)
a.InsertVector(5, b)
verify_pattern(t, a, 5, 0, 5)
// 3
a = make_vector(0, 10)
b = make_vector(1, 3)
a.InsertVector(3, b)
verify_pattern(t, a, 3, 3, 7)
// 4
a = make_vector(0, 10)
b = make_vector(1, 1000)
a.InsertVector(8, b)
verify_pattern(t, a, 8, 1000, 2)
}
func TestDo(t *testing.T) {
const n = 25
const salt = 17
a := new(Vector).Resize(n, 0)
for i := 0; i < n; i++ {
a.Set(i, int2Value(salt*i))
}
count := 0
a.Do(func(e interface{}) {
i := intf2Value(e)
if i != int2Value(count*salt) {
t.Error(tname(a), "value at", count, "should be", count*salt, "not", i)
}
count++
})
if count != n {
t.Error(tname(a), "should visit", n, "values; did visit", count)
}
b := new(Vector).Resize(n, 0)
for i := 0; i < n; i++ {
(*b)[i] = int2Value(salt * i)
}
count = 0
b.Do(func(e interface{}) {
i := intf2Value(e)
if i != int2Value(count*salt) {
t.Error(tname(b), "b) value at", count, "should be", count*salt, "not", i)
}
count++
})
if count != n {
t.Error(tname(b), "b) should visit", n, "values; did visit", count)
}
var c Vector
c.Resize(n, 0)
for i := 0; i < n; i++ {
c[i] = int2Value(salt * i)
}
count = 0
c.Do(func(e interface{}) {
i := intf2Value(e)
if i != int2Value(count*salt) {
t.Error(tname(c), "c) value at", count, "should be", count*salt, "not", i)
}
count++
})
if count != n {
t.Error(tname(c), "c) should visit", n, "values; did visit", count)
}
}
func TestVectorCopy(t *testing.T) {
// verify Copy() returns a copy, not simply a slice of the original vector
const Len = 10
var src Vector
for i := 0; i < Len; i++ {
src.Push(int2Value(i * i))
}
dest := src.Copy()
for i := 0; i < Len; i++ {
src[i] = int2Value(-1)
v := elem2Value(dest[i])
if v != int2Value(i*i) {
t.Error(tname(src), "expected", i*i, "got", v)
}
}
}

7
src/pkg/old/template/template_test.go
View File

@ -6,7 +6,6 @@ package template
import (
"bytes"
"container/vector"
"fmt"
"io"
"io/ioutil"
@ -42,7 +41,7 @@ type S struct {
Empty []*T
Emptystring string
Null []*T
Vec *vector.Vector
Vec []interface{}
True bool
False bool
Mp map[string]string
@ -497,9 +496,7 @@ func testAll(t *testing.T, parseFunc func(*Test) (*Template, os.Error)) {
s.Pdata = []*T{&t1, &t2}
s.Empty = []*T{}
s.Null = nil
s.Vec = new(vector.Vector)
s.Vec.Push("elt1")
s.Vec.Push("elt2")
s.Vec = []interface{}{"elt1", "elt2"}
s.True = true
s.False = false
s.Mp = make(map[string]string)

64
test/vectors.go
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@ -1,64 +0,0 @@
// $G $F.go && $L $F.$A && ./$A.out
// Copyright 2009 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.
package main
import "container/vector"
type S struct {
val int
}
func (p *S) Init(val int) *S {
p.val = val
return p
}
func test0() {
v := new(vector.Vector)
if v.Len() != 0 {
print("len = ", v.Len(), "\n")
panic("fail")
}
}
func test1() {
var a [1000]*S
for i := 0; i < len(a); i++ {
a[i] = new(S).Init(i)
}
v := new(vector.Vector)
for i := 0; i < len(a); i++ {
v.Insert(0, a[i])
if v.Len() != i+1 {
print("len = ", v.Len(), "\n")
panic("fail")
}
}
for i := 0; i < v.Len(); i++ {
x := v.At(i).(*S)
if x.val != v.Len()-i-1 {
print("expected ", i, ", found ", x.val, "\n")
panic("fail")
}
}
for v.Len() > 10 {
v.Delete(10)
}
}
func main() {
test0()
test1()
}