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exp/locale/collate: Added skeleton for the higher-level types to provide

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context for change lists of lower-level types. The public APIs are defined
in builder.go and collate.go. Type table is the glue between the lower and
higher level code and might be a good starting point for understanding the
collation code.

R=r, r
CC=golang-dev
https://golang.org/cl/5999053
This commit is contained in:
Marcel van Lohuizen 2012-04-25 13:19:00 +02:00
parent bcf48c7971
commit 52f0afe0db
6 changed files with 759 additions and 0 deletions
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109
src/pkg/exp/locale/collate/build/table.go Normal file
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// 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.
package build
import (
"fmt"
"io"
"reflect"
)
// table is an intermediate structure that roughly resembles the table in collate.
// It implements the non-exported interface collate.tableInitializer
type table struct {
index trie // main trie
// expansion info
expandElem []uint32
// contraction info
contractTries contractTrieSet
contractElem []uint32
maxContractLen int
}
func (t *table) TrieIndex() []uint16 {
return t.index.index
}
func (t *table) TrieValues() []uint32 {
return t.index.values
}
func (t *table) ExpandElems() []uint32 {
return t.expandElem
}
func (t *table) ContractTries() []struct{ l, h, n, i uint8 } {
return t.contractTries
}
func (t *table) ContractElems() []uint32 {
return t.contractElem
}
func (t *table) MaxContractLen() int {
return t.maxContractLen
}
// print writes the table as Go compilable code to w. It prefixes the
// variable names with name. It returns the number of bytes written
// and the size of the resulting table.
func (t *table) print(w io.Writer, name string) (n, size int, err error) {
update := func(nn, sz int, e error) {
n += nn
if err == nil {
err = e
}
size += sz
}
p := func(f string, a ...interface{}) {
nn, e := fmt.Fprintf(w, f, a...)
update(nn, 0, e)
}
// Write main table.
size += int(reflect.TypeOf(*t).Size())
p("var %sTable = table{\n", name)
update(t.index.printStruct(w, name))
p(",\n")
p("%sExpandElem[:],\n", name)
update(t.contractTries.printStruct(w, name))
p(",\n")
p("%sContractElem[:],\n", name)
p("}\n\n")
// Write arrays needed for the structure.
update(printColElems(w, t.expandElem, name+"ExpandElem"))
update(printColElems(w, t.contractElem, name+"ContractElem"))
update(t.index.printArrays(w, name))
update(t.contractTries.printArray(w, name))
p("// Total size of %sTable is %d bytes\n", name, size)
return
}
func printColElems(w io.Writer, a []uint32, name string) (n, sz int, err error) {
p := func(f string, a ...interface{}) {
nn, e := fmt.Fprintf(w, f, a...)
n += nn
if err == nil {
err = e
}
}
sz = len(a) * int(reflect.TypeOf(uint32(0)).Size())
p("// %s: %d entries, %d bytes\n", name, len(a), sz)
p("var %s = [%d]uint32 {", name, len(a))
for i, c := range a {
switch {
case i%64 == 0:
p("\n\t// Block %d, offset 0x%x\n", i/64, i)
case (i%64)%6 == 0:
p("\n\t")
}
p("0x%.8X, ", c)
}
p("\n}\n\n")
return
}

157
src/pkg/exp/locale/collate/collate.go Normal file
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// 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.
// Package collate contains types for comparing and sorting Unicode strings
// according to a given collation order. Package locale provides a high-level
// interface to collation. Users should typically use that package instead.
package collate
import (
"exp/norm"
)
// Level identifies the collation comparison level.
// The primary level corresponds to the basic sorting of text.
// The secondary level corresponds to accents and related linguistic elements.
// The tertiary level corresponds to casing and related concepts.
// The quaternary level is derived from the other levels by the
// various algorithms for handling variable elements.
type Level int
const (
Primary Level = iota
Secondary
Tertiary
Quaternary
Identity
)
// AlternateHandling identifies the various ways in which variables are handled.
// A rune with a primary weight lower than the variable top is considered a
// variable.
// See http://www.unicode.org/reports/tr10/#Variable_Weighting for details.
type AlternateHandling int
const (
// AltShifted sets variables to be ignorable for levels one through three and
// adds a fourth level based on the values of the ignored levels.
AltShifted AlternateHandling = iota
// AltNonIgnorable turns off special handling of variables.
AltNonIgnorable
// AltBlanked sets variables and all subsequent primary ignorables to be
// ignorable at all levels. This is identical to removing all variables
// and subsequent primary ignorables from the input.
AltBlanked
// AltShiftTrimmed is a slight variant of AltShifted that is used to
// emulate POSIX.
AltShiftTrimmed
)
// Collator provides functionality for comparing strings for a given
// collation order.
type Collator struct {
// See SetVariableTop.
variableTop uint32
// Strength sets the maximum level to use in comparison.
Strength Level
// Alternate specifies an alternative handling of variables.
Alternate AlternateHandling
// Backwards specifies the order of sorting at the secondary level.
// This option exists predominantly to support reverse sorting of accents in French.
Backwards bool
// With HiraganaQuaternary enabled, Hiragana codepoints will get lower values
// than all the other non-variable code points. Strength must be greater or
// equal to Quaternary for this to take effect.
HiraganaQuaternary bool
// If CaseLevel is true, a level consisting only of case characteristics will
// be inserted in front of the tertiary level. To ignore accents but take
// cases into account, set Strength to Primary and CaseLevel to true.
CaseLevel bool
// If Numeric is true, any sequence of decimal digits (category is Nd) is sorted
// at a primary level with its numeric value. For example, "A-21" < "A-123".
Numeric bool
f norm.Form
t *table
}
// SetVariableTop sets all runes with primary strength less than the primary
// strength of r to be variable and thus affected by alternate handling.
func (c *Collator) SetVariableTop(r rune) {
// TODO: implement
}
var (
Root = Collator{}
)
// Buffer holds reusable buffers that can be used during collation.
// Reusing a Buffer for the various calls that accept it may avoid
// unnecessary memory allocations.
type Buffer struct {
// TODO: try various parameters and techniques, such as using
// a chan of buffers for a pool.
ba [4096]byte
wa [512]weights
key []byte
ce []weights
}
func (b *Buffer) init() {
if b.ce == nil {
b.ce = b.wa[:0]
b.key = b.ba[:0]
} else {
b.ce = b.ce[:0]
}
}
// ResetKeys clears the buffer used for generated keys. Calling ResetKeys
// invalidates keys previously obtained from Key or KeyFromString.
func (b *Buffer) ResetKeys() {
b.ce = b.ce[:0]
b.key = b.key[:0]
}
// Compare returns an integer comparing the two byte slices.
// The result will be 0 if a==b, -1 if a < b, and +1 if a > b.
func (c *Collator) Compare(buf *Buffer, a, b []byte) int {
// TODO: implement
return 0
}
// CompareString returns an integer comparing the two strings.
// The result will be 0 if a==b, -1 if a < b, and +1 if a > b.
func (c *Collator) CompareString(buf *Buffer, a, b string) int {
// TODO: implement
return 0
}
// Key returns the collation key for str.
// Passing the buffer buf may avoid memory allocations.
// The returned slice will point to an allocation in Buffer and will retain
// valid until the next call to buf.ResetKeys().
func (c *Collator) Key(buf *Buffer, str []byte) []byte {
// TODO: implement
return nil
}
// KeyFromString returns the collation key for str.
// Passing the buffer buf may avoid memory allocations.
// The returned slice will point to an allocation in Buffer and will retain
// valid until the next call to buf.ResetKeys().
func (c *Collator) KeyFromString(buf *Buffer, str string) []byte {
// TODO: implement
return nil
}

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src/pkg/exp/locale/collate/export.go Normal file
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// 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.
package collate
// Init is used by type Builder in exp/locale/collate/build/
// to create Collator instances. It is for internal use only.
func Init(data interface{}) *Collator {
init, ok := data.(tableInitializer)
if !ok {
return nil
}
t := &table{}
t.index.index = init.TrieIndex()
t.index.values = init.TrieValues()
t.expandElem = init.ExpandElems()
t.contractTries = init.ContractTries()
t.contractElem = init.ContractElems()
t.maxContractLen = init.MaxContractLen()
return &Collator{t: t}
}
type tableInitializer interface {
TrieIndex() []uint16
TrieValues() []uint32
ExpandElems() []uint32
ContractTries() []struct{ l, h, n, i uint8 }
ContractElems() []uint32
MaxContractLen() int
}

49
src/pkg/exp/locale/collate/export_test.go Normal file
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// 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.
package collate
// Export for testing.
import "fmt"
type Weights struct {
Primary, Secondary, Tertiary int
}
func W(ce ...int) Weights {
w := Weights{ce[0], defaultSecondary, defaultTertiary}
if len(ce) > 1 {
w.Secondary = ce[1]
}
if len(ce) > 2 {
w.Tertiary = ce[2]
}
return w
}
func (w Weights) String() string {
return fmt.Sprintf("[%d.%d.%d]", w.Primary, w.Secondary, w.Tertiary)
}
type Table struct {
t *table
w []weights
}
func GetTable(c *Collator) *Table {
return &Table{c.t, nil}
}
func convertWeights(ws []weights) []Weights {
out := make([]Weights, len(ws))
for i, w := range ws {
out[i] = Weights{int(w.primary), int(w.secondary), int(w.tertiary)}
}
return out
}
func (t *Table) AppendNext(s []byte) ([]Weights, int) {
w, n := t.t.appendNext(nil, s)
return convertWeights(w), n
}

135
src/pkg/exp/locale/collate/table.go Normal file
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// 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.
package collate
import (
"exp/norm"
"unicode/utf8"
)
// table holds all collation data for a given collation ordering.
type table struct {
index trie // main trie
// expansion info
expandElem []uint32
// contraction info
contractTries contractTrieSet
contractElem []uint32
maxContractLen int
}
// appendNext appends the weights corresponding to the next rune or
// contraction in s. If a contraction is matched to a discontinuous
// sequence of runes, the weights for the interstitial runes are
// appended as well. It returns a new slice that includes the appended
// weights and the number of bytes consumed from s.
func (t *table) appendNext(w []weights, s []byte) ([]weights, int) {
v, sz := t.index.lookup(s)
ce := colElem(v)
tp := ce.ctype()
if tp == ceNormal {
w = append(w, getWeights(ce, s))
} else if tp == ceExpansionIndex {
w = t.appendExpansion(w, ce)
} else if tp == ceContractionIndex {
n := 0
w, n = t.matchContraction(w, ce, s[sz:])
sz += n
} else if tp == ceDecompose {
// Decompose using NFCK and replace tertiary weights.
t1, t2 := splitDecompose(ce)
i := len(w)
nfkd := norm.NFKD.Properties(s).Decomposition()
for p := 0; len(nfkd) > 0; nfkd = nfkd[p:] {
w, p = t.appendNext(w, nfkd)
}
w[i].tertiary = t1
if i++; i < len(w) {
w[i].tertiary = t2
for i++; i < len(w); i++ {
w[i].tertiary = maxTertiary
}
}
}
return w, sz
}
func getWeights(ce colElem, s []byte) weights {
if ce == 0 { // implicit
r, _ := utf8.DecodeRune(s)
return weights{
primary: uint32(implicitPrimary(r)),
secondary: defaultSecondary,
tertiary: defaultTertiary,
}
}
return splitCE(ce)
}
func (t *table) appendExpansion(w []weights, ce colElem) []weights {
i := splitExpandIndex(ce)
n := int(t.expandElem[i])
i++
for _, ce := range t.expandElem[i : i+n] {
w = append(w, splitCE(colElem(ce)))
}
return w
}
func (t *table) matchContraction(w []weights, ce colElem, suffix []byte) ([]weights, int) {
index, n, offset := splitContractIndex(ce)
scan := t.contractTries.scanner(index, n, suffix)
buf := [norm.MaxSegmentSize]byte{}
bufp := 0
p := scan.scan(0)
if !scan.done && p < len(suffix) && suffix[p] >= utf8.RuneSelf {
// By now we should have filtered most cases.
p0 := p
bufn := 0
rune := norm.NFC.Properties(suffix[p:])
p += rune.Size()
if prevCC := rune.TrailCCC(); prevCC != 0 {
// A gap may only occur in the last normalization segment.
// This also ensures that len(scan.s) < norm.MaxSegmentSize.
if end := norm.NFC.FirstBoundary(suffix[p:]); end != -1 {
scan.s = suffix[:p+end]
}
for p < len(suffix) && !scan.done && suffix[p] >= utf8.RuneSelf {
rune = norm.NFC.Properties(suffix[p:])
if ccc := rune.LeadCCC(); ccc == 0 || prevCC >= ccc {
break
}
prevCC = rune.TrailCCC()
if pp := scan.scan(p); pp != p {
// Copy the interstitial runes for later processing.
bufn += copy(buf[bufn:], suffix[p0:p])
if scan.pindex == pp {
bufp = bufn
}
p, p0 = pp, pp
} else {
p += rune.Size()
}
}
}
}
// Append weights for the matched contraction, which may be an expansion.
i, n := scan.result()
ce = colElem(t.contractElem[i+offset])
if ce.ctype() == ceNormal {
w = append(w, splitCE(ce))
} else {
w = t.appendExpansion(w, ce)
}
// Append weights for the runes in the segment not part of the contraction.
for b, p := buf[:bufp], 0; len(b) > 0; b = b[p:] {
w, p = t.appendNext(w, b)
}
return w, n
}

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// 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.
package collate_test
import (
"exp/locale/collate"
"exp/locale/collate/build"
"exp/norm"
"testing"
)
type Weights struct {
collate.Weights
}
type input struct {
str string
ces [][]int
}
type check struct {
in string
n int
out []Weights
}
type tableTest struct {
in []input
chk []check
}
func w(ce ...int) Weights {
return Weights{collate.W(ce...)}
}
var defaults = w(0)
func pt(p, t int) []int {
return []int{p, defaults.Secondary, t}
}
func makeTable(in []input) (*collate.Collator, error) {
b := build.NewBuilder()
for _, r := range in {
b.Add([]rune(r.str), r.ces)
}
return b.Build("")
}
// modSeq holds a seqeunce of modifiers in increasing order of CCC long enough
// to cause a segment overflow if not handled correctly. The last rune in this
// list has a CCC of 214.
var modSeq = []rune{
0x05B1, 0x05B2, 0x05B3, 0x05B4, 0x05B5, 0x05B6, 0x05B7, 0x05B8, 0x05B9, 0x05BB,
0x05BC, 0x05BD, 0x05BF, 0x05C1, 0x05C2, 0xFB1E, 0x064B, 0x064C, 0x064D, 0x064E,
0x064F, 0x0650, 0x0651, 0x0652, 0x0670, 0x0711, 0x0C55, 0x0C56, 0x0E38, 0x0E48,
0x0EB8, 0x0EC8, 0x0F71, 0x0F72, 0x0F74, 0x0321, 0x1DCE,
}
var mods []input
var modW = func() []Weights {
ws := []Weights{}
for _, r := range modSeq {
rune := norm.NFC.PropertiesString(string(r))
ws = append(ws, w(0, int(rune.CCC())))
mods = append(mods, input{string(r), [][]int{{0, int(rune.CCC())}}})
}
return ws
}()
var appendNextTests = []tableTest{
{ // test getWeights
[]input{
{"a", [][]int{{100}}},
{"b", [][]int{{105}}},
{"c", [][]int{{110}}},
{"ß", [][]int{{120}}},
},
[]check{
{"a", 1, []Weights{w(100)}},
{"b", 1, []Weights{w(105)}},
{"c", 1, []Weights{w(110)}},
{"d", 1, []Weights{w(0x4FBA4)}},
{"ab", 1, []Weights{w(100)}},
{"bc", 1, []Weights{w(105)}},
{"dd", 1, []Weights{w(0x4FBA4)}},
{"ß", 2, []Weights{w(120)}},
},
},
{ // test expansion
[]input{
{"u", [][]int{{100}}},
{"U", [][]int{{100}, {0, 25}}},
{"w", [][]int{{100}, {100}}},
{"W", [][]int{{100}, {0, 25}, {100}, {0, 25}}},
},
[]check{
{"u", 1, []Weights{w(100)}},
{"U", 1, []Weights{w(100), w(0, 25)}},
{"w", 1, []Weights{w(100), w(100)}},
{"W", 1, []Weights{w(100), w(0, 25), w(100), w(0, 25)}},
},
},
{ // test decompose
[]input{
{"D", [][]int{pt(104, 8)}},
{"z", [][]int{pt(130, 8)}},
{"\u030C", [][]int{{0, 40}}}, // Caron
{"\u01C5", [][]int{pt(104, 9), pt(130, 4), {0, 40, 0x1F}}}, // Dž = D+z+caron
},
[]check{
{"\u01C5", 2, []Weights{w(pt(104, 9)...), w(pt(130, 4)...), w(0, 40, 0x1F)}},
},
},
{ // test basic contraction
[]input{
{"a", [][]int{{100}}},
{"ab", [][]int{{101}}},
{"aab", [][]int{{101}, {101}}},
{"abc", [][]int{{102}}},
{"b", [][]int{{200}}},
{"c", [][]int{{300}}},
{"d", [][]int{{400}}},
},
[]check{
{"a", 1, []Weights{w(100)}},
{"aa", 1, []Weights{w(100)}},
{"aac", 1, []Weights{w(100)}},
{"ab", 2, []Weights{w(101)}},
{"abb", 2, []Weights{w(101)}},
{"aab", 3, []Weights{w(101), w(101)}},
{"aaba", 3, []Weights{w(101), w(101)}},
{"abc", 3, []Weights{w(102)}},
{"abcd", 3, []Weights{w(102)}},
{"d", 1, []Weights{w(400)}},
},
},
{ // test discontinuous contraction
append(mods, []input{
// modifiers; secondary weight equals ccc
{"\u0316", [][]int{{0, 220}}},
{"\u0317", [][]int{{0, 220}, {0, 220}}},
{"\u302D", [][]int{{0, 222}}},
{"\u302E", [][]int{{0, 224}}}, // used as starter
{"\u302F", [][]int{{0, 224}}}, // used as starter
{"\u18A9", [][]int{{0, 228}}},
{"\u0300", [][]int{{0, 230}}},
{"\u0301", [][]int{{0, 230}}},
{"\u0315", [][]int{{0, 232}}},
{"\u031A", [][]int{{0, 232}}},
{"\u035C", [][]int{{0, 233}}},
{"\u035F", [][]int{{0, 233}}},
{"\u035D", [][]int{{0, 234}}},
{"\u035E", [][]int{{0, 234}}},
{"\u0345", [][]int{{0, 240}}},
// starters
{"a", [][]int{{100}}},
{"b", [][]int{{200}}},
{"c", [][]int{{300}}},
{"\u03B1", [][]int{{900}}},
// contractions
{"a\u0300", [][]int{{101}}},
{"a\u0301", [][]int{{102}}},
{"a\u035E", [][]int{{110}}},
{"a\u035Eb\u035E", [][]int{{115}}},
{"ac\u035Eaca\u035E", [][]int{{116}}},
{"a\u035Db\u035D", [][]int{{117}}},
{"a\u0301\u035Db", [][]int{{120}}},
{"a\u0301\u035F", [][]int{{121}}},
{"a\u0301\u035Fb", [][]int{{122}}},
{"\u03B1\u0345", [][]int{{901}, {902}}},
{"\u302E\u18A9", [][]int{{0, 131}, {0, 132}}},
{"\u302F\u18A9", [][]int{{0, 130}}},
}...),
[]check{
{"ab", 1, []Weights{w(100)}}, // closing segment
{"a\u0316\u0300b", 5, []Weights{w(101), w(0, 220)}}, // closing segment
{"a\u0316\u0300", 5, []Weights{w(101), w(0, 220)}}, // no closing segment
{"a\u0316\u0300\u035Cb", 5, []Weights{w(101), w(0, 220)}}, // completes before segment end
{"a\u0316\u0300\u035C", 5, []Weights{w(101), w(0, 220)}}, // completes before segment end
{"a\u0316\u0301b", 5, []Weights{w(102), w(0, 220)}}, // closing segment
{"a\u0316\u0301", 5, []Weights{w(102), w(0, 220)}}, // no closing segment
{"a\u0316\u0301\u035Cb", 5, []Weights{w(102), w(0, 220)}}, // completes before segment end
{"a\u0316\u0301\u035C", 5, []Weights{w(102), w(0, 220)}}, // completes before segment end
// match blocked by modifier with same ccc
{"a\u0301\u0315\u031A\u035Fb", 3, []Weights{w(102)}},
// multiple gaps
{"a\u0301\u035Db", 6, []Weights{w(120)}},
{"a\u0301\u035F", 5, []Weights{w(121)}},
{"a\u0301\u035Fb", 6, []Weights{w(122)}},
{"a\u0316\u0301\u035F", 7, []Weights{w(121), w(0, 220)}},
{"a\u0301\u0315\u035Fb", 7, []Weights{w(121), w(0, 232)}},
{"a\u0316\u0301\u0315\u035Db", 5, []Weights{w(102), w(0, 220)}},
{"a\u0316\u0301\u0315\u035F", 9, []Weights{w(121), w(0, 220), w(0, 232)}},
{"a\u0316\u0301\u0315\u035Fb", 9, []Weights{w(121), w(0, 220), w(0, 232)}},
{"a\u0316\u0301\u0315\u035F\u035D", 9, []Weights{w(121), w(0, 220), w(0, 232)}},
{"a\u0316\u0301\u0315\u035F\u035Db", 9, []Weights{w(121), w(0, 220), w(0, 232)}},
// handling of segment overflow
{ // just fits within segment
"a" + string(modSeq[:30]) + "\u0301",
3 + len(string(modSeq[:30])),
append([]Weights{w(102)}, modW[:30]...),
},
{"a" + string(modSeq[:31]) + "\u0301", 1, []Weights{w(100)}}, // overflow
{"a" + string(modSeq) + "\u0301", 1, []Weights{w(100)}},
{ // just fits within segment with two interstitial runes
"a" + string(modSeq[:28]) + "\u0301\u0315\u035F",
7 + len(string(modSeq[:28])),
append(append([]Weights{w(121)}, modW[:28]...), w(0, 232)),
},
{ // second half does not fit within segment
"a" + string(modSeq[:29]) + "\u0301\u0315\u035F",
3 + len(string(modSeq[:29])),
append([]Weights{w(102)}, modW[:29]...),
},
// discontinuity can only occur in last normalization segment
{"a\u035Eb\u035E", 6, []Weights{w(115)}},
{"a\u0316\u035Eb\u035E", 5, []Weights{w(110), w(0, 220)}},
{"a\u035Db\u035D", 6, []Weights{w(117)}},
{"a\u0316\u035Db\u035D", 1, []Weights{w(100)}},
{"a\u035Eb\u0316\u035E", 8, []Weights{w(115), w(0, 220)}},
{"a\u035Db\u0316\u035D", 8, []Weights{w(117), w(0, 220)}},
{"ac\u035Eaca\u035E", 9, []Weights{w(116)}},
{"a\u0316c\u035Eaca\u035E", 1, []Weights{w(100)}},
{"ac\u035Eac\u0316a\u035E", 1, []Weights{w(100)}},
// expanding contraction
{"\u03B1\u0345", 4, []Weights{w(901), w(902)}},
// Theoretical possibilities
// contraction within a gap
{"a\u302F\u18A9\u0301", 9, []Weights{w(102), w(0, 130)}},
// expansion within a gap
{"a\u0317\u0301", 5, []Weights{w(102), w(0, 220), w(0, 220)}},
{"a\u302E\u18A9\u0301", 9, []Weights{w(102), w(0, 131), w(0, 132)}},
{
"a\u0317\u302E\u18A9\u0301",
11,
[]Weights{w(102), w(0, 220), w(0, 220), w(0, 131), w(0, 132)},
},
},
},
}
func TestAppendNext(t *testing.T) {
for i, tt := range appendNextTests {
c, err := makeTable(tt.in)
if err != nil {
t.Errorf("%d: error creating table: %v", i, err)
continue
}
ct := collate.GetTable(c)
for j, chk := range tt.chk {
ws, n := ct.AppendNext([]byte(chk.in))
if n != chk.n {
t.Errorf("%d:%d: bytes consumed was %d; want %d", i, j, n, chk.n)
}
if len(ws) != len(chk.out) {
t.Errorf("%d:%d: len(ws) was %d; want %d (%v vs %v)\n%X", i, j, len(ws), len(chk.out), ws, chk.out, chk.in)
continue
}
for k, w := range ws {
if w != chk.out[k].Weights {
t.Errorf("%d:%d: Weights %d was %v; want %v", i, j, k, w, chk.out[k])
}
}
}
}
}