1 files changed, 0 insertions, 236 deletions
diff --git a/vendor/golang.org/x/text/internal/colltab/numeric.go b/vendor/golang.org/x/text/internal/colltab/numeric.go
deleted file mode 100644
index 38c255c..0000000
--- a/vendor/golang.org/x/text/internal/colltab/numeric.go
+++ /dev/null
@@ -1,236 +0,0 @@
-// Copyright 2014 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 colltab
-
-import (
-	"unicode"
-	"unicode/utf8"
-)
-
-// NewNumericWeighter wraps w to replace individual digits to sort based on their
-// numeric value.
-//
-// Weighter w must have a free primary weight after the primary weight for 9.
-// If this is not the case, numeric value will sort at the same primary level
-// as the first primary sorting after 9.
-func NewNumericWeighter(w Weighter) Weighter {
-	getElem := func(s string) Elem {
-		elems, _ := w.AppendNextString(nil, s)
-		return elems[0]
-	}
-	nine := getElem("9")
-
-	// Numbers should order before zero, but the DUCET has no room for this.
-	// TODO: move before zero once we use fractional collation elements.
-	ns, _ := MakeElem(nine.Primary()+1, nine.Secondary(), int(nine.Tertiary()), 0)
-
-	return &numericWeighter{
-		Weighter: w,
-
-		// We assume that w sorts digits of different kinds in order of numeric
-		// value and that the tertiary weight order is preserved.
-		//
-		// TODO: evaluate whether it is worth basing the ranges on the Elem
-		// encoding itself once the move to fractional weights is complete.
-		zero:          getElem("0"),
-		zeroSpecialLo: getElem("０"), // U+FF10 FULLWIDTH DIGIT ZERO
-		zeroSpecialHi: getElem("₀"), // U+2080 SUBSCRIPT ZERO
-		nine:          nine,
-		nineSpecialHi: getElem("₉"), // U+2089 SUBSCRIPT NINE
-		numberStart:   ns,
-	}
-}
-
-// A numericWeighter translates a stream of digits into a stream of weights
-// representing the numeric value.
-type numericWeighter struct {
-	Weighter
-
-	// The Elems below all demarcate boundaries of specific ranges. With the
-	// current element encoding digits are in two ranges: normal (default
-	// tertiary value) and special. For most languages, digits have collation
-	// elements in the normal range.
-	//
-	// Note: the range tests are very specific for the element encoding used by
-	// this implementation. The tests in collate_test.go are designed to fail
-	// if this code is not updated when an encoding has changed.
-
-	zero          Elem // normal digit zero
-	zeroSpecialLo Elem // special digit zero, low tertiary value
-	zeroSpecialHi Elem // special digit zero, high tertiary value
-	nine          Elem // normal digit nine
-	nineSpecialHi Elem // special digit nine
-	numberStart   Elem
-}
-
-// AppendNext calls the namesake of the underlying weigher, but replaces single
-// digits with weights representing their value.
-func (nw *numericWeighter) AppendNext(buf []Elem, s []byte) (ce []Elem, n int) {
-	ce, n = nw.Weighter.AppendNext(buf, s)
-	nc := numberConverter{
-		elems: buf,
-		w:     nw,
-		b:     s,
-	}
-	isZero, ok := nc.checkNextDigit(ce)
-	if !ok {
-		return ce, n
-	}
-	// ce might have been grown already, so take it instead of buf.
-	nc.init(ce, len(buf), isZero)
-	for n < len(s) {
-		ce, sz := nw.Weighter.AppendNext(nc.elems, s[n:])
-		nc.b = s
-		n += sz
-		if !nc.update(ce) {
-			break
-		}
-	}
-	return nc.result(), n
-}
-
-// AppendNextString calls the namesake of the underlying weigher, but replaces
-// single digits with weights representing their value.
-func (nw *numericWeighter) AppendNextString(buf []Elem, s string) (ce []Elem, n int) {
-	ce, n = nw.Weighter.AppendNextString(buf, s)
-	nc := numberConverter{
-		elems: buf,
-		w:     nw,
-		s:     s,
-	}
-	isZero, ok := nc.checkNextDigit(ce)
-	if !ok {
-		return ce, n
-	}
-	nc.init(ce, len(buf), isZero)
-	for n < len(s) {
-		ce, sz := nw.Weighter.AppendNextString(nc.elems, s[n:])
-		nc.s = s
-		n += sz
-		if !nc.update(ce) {
-			break
-		}
-	}
-	return nc.result(), n
-}
-
-type numberConverter struct {
-	w *numericWeighter
-
-	elems    []Elem
-	nDigits  int
-	lenIndex int
-
-	s string // set if the input was of type string
-	b []byte // set if the input was of type []byte
-}
-
-// init completes initialization of a numberConverter and prepares it for adding
-// more digits. elems is assumed to have a digit starting at oldLen.
-func (nc *numberConverter) init(elems []Elem, oldLen int, isZero bool) {
-	// Insert a marker indicating the start of a number and and a placeholder
-	// for the number of digits.
-	if isZero {
-		elems = append(elems[:oldLen], nc.w.numberStart, 0)
-	} else {
-		elems = append(elems, 0, 0)
-		copy(elems[oldLen+2:], elems[oldLen:])
-		elems[oldLen] = nc.w.numberStart
-		elems[oldLen+1] = 0
-
-		nc.nDigits = 1
-	}
-	nc.elems = elems
-	nc.lenIndex = oldLen + 1
-}
-
-// checkNextDigit reports whether bufNew adds a single digit relative to the old
-// buffer. If it does, it also reports whether this digit is zero.
-func (nc *numberConverter) checkNextDigit(bufNew []Elem) (isZero, ok bool) {
-	if len(nc.elems) >= len(bufNew) {
-		return false, false
-	}
-	e := bufNew[len(nc.elems)]
-	if e < nc.w.zeroSpecialLo || nc.w.nine < e {
-		// Not a number.
-		return false, false
-	}
-	if e < nc.w.zero {
-		if e > nc.w.nineSpecialHi {
-			// Not a number.
-			return false, false
-		}
-		if !nc.isDigit() {
-			return false, false
-		}
-		isZero = e <= nc.w.zeroSpecialHi
-	} else {
-		// This is the common case if we encounter a digit.
-		isZero = e == nc.w.zero
-	}
-	// Test the remaining added collation elements have a zero primary value.
-	if n := len(bufNew) - len(nc.elems); n > 1 {
-		for i := len(nc.elems) + 1; i < len(bufNew); i++ {
-			if bufNew[i].Primary() != 0 {
-				return false, false
-			}
-		}
-		// In some rare cases, collation elements will encode runes in
-		// unicode.No as a digit. For example Ethiopic digits (U+1369 - U+1371)
-		// are not in Nd. Also some digits that clearly belong in unicode.No,
-		// like U+0C78 TELUGU FRACTION DIGIT ZERO FOR ODD POWERS OF FOUR, have
-		// collation elements indistinguishable from normal digits.
-		// Unfortunately, this means we need to make this check for nearly all
-		// non-Latin digits.
-		//
-		// TODO: check the performance impact and find something better if it is
-		// an issue.
-		if !nc.isDigit() {
-			return false, false
-		}
-	}
-	return isZero, true
-}
-
-func (nc *numberConverter) isDigit() bool {
-	if nc.b != nil {
-		r, _ := utf8.DecodeRune(nc.b)
-		return unicode.In(r, unicode.Nd)
-	}
-	r, _ := utf8.DecodeRuneInString(nc.s)
-	return unicode.In(r, unicode.Nd)
-}
-
-// We currently support a maximum of about 2M digits (the number of primary
-// values). Such numbers will compare correctly against small numbers, but their
-// comparison against other large numbers is undefined.
-//
-// TODO: define a proper fallback, such as comparing large numbers textually or
-// actually allowing numbers of unlimited length.
-//
-// TODO: cap this to a lower number (like 100) and maybe allow a larger number
-// in an option?
-const maxDigits = 1<<maxPrimaryBits - 1
-
-func (nc *numberConverter) update(elems []Elem) bool {
-	isZero, ok := nc.checkNextDigit(elems)
-	if nc.nDigits == 0 && isZero {
-		return true
-	}
-	nc.elems = elems
-	if !ok {
-		return false
-	}
-	nc.nDigits++
-	return nc.nDigits < maxDigits
-}
-
-// result fills in the length element for the digit sequence and returns the
-// completed collation elements.
-func (nc *numberConverter) result() []Elem {
-	e, _ := MakeElem(nc.nDigits, defaultSecondary, defaultTertiary, 0)
-	nc.elems[nc.lenIndex] = e
-	return nc.elems
-}