some deletions

[dotfiles/.git] / .config / coc / extensions / coc-go-data / tools / pkg / mod / golang.org / x / tools@v0.0.0-20201028153306-37f0764111ff / internal / span / utf16.go

diff --git a/.config/coc/extensions/coc-go-data/tools/pkg/mod/golang.org/x/tools@v0.0.0-20201028153306-37f0764111ff/internal/span/utf16.go b/.config/coc/extensions/coc-go-data/tools/pkg/mod/golang.org/x/tools@v0.0.0-20201028153306-37f0764111ff/internal/span/utf16.go
deleted file mode 100644 (file)
index f06a246..0000000
--- a/.config/coc/extensions/coc-go-data/tools/pkg/mod/golang.org/x/tools@v0.0.0-20201028153306-37f0764111ff/internal/span/utf16.go
+++ /dev/null
@@ -1,91 +0,0 @@
-// Copyright 2019 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 span
-
-import (
-       "fmt"
-       "unicode/utf16"
-       "unicode/utf8"
-)
-
-// ToUTF16Column calculates the utf16 column expressed by the point given the
-// supplied file contents.
-// This is used to convert from the native (always in bytes) column
-// representation and the utf16 counts used by some editors.
-func ToUTF16Column(p Point, content []byte) (int, error) {
-       if !p.HasPosition() {
-               return -1, fmt.Errorf("ToUTF16Column: point is missing position")
-       }
-       if !p.HasOffset() {
-               return -1, fmt.Errorf("ToUTF16Column: point is missing offset")
-       }
-       offset := p.Offset()      // 0-based
-       colZero := p.Column() - 1 // 0-based
-       if colZero == 0 {
-               // 0-based column 0, so it must be chr 1
-               return 1, nil
-       } else if colZero < 0 {
-               return -1, fmt.Errorf("ToUTF16Column: column is invalid (%v)", colZero)
-       }
-       // work out the offset at the start of the line using the column
-       lineOffset := offset - colZero
-       if lineOffset < 0 || offset > len(content) {
-               return -1, fmt.Errorf("ToUTF16Column: offsets %v-%v outside file contents (%v)", lineOffset, offset, len(content))
-       }
-       // Use the offset to pick out the line start.
-       // This cannot panic: offset > len(content) and lineOffset < offset.
-       start := content[lineOffset:]
-
-       // Now, truncate down to the supplied column.
-       start = start[:colZero]
-
-       // and count the number of utf16 characters
-       // in theory we could do this by hand more efficiently...
-       return len(utf16.Encode([]rune(string(start)))) + 1, nil
-}
-
-// FromUTF16Column advances the point by the utf16 character offset given the
-// supplied line contents.
-// This is used to convert from the utf16 counts used by some editors to the
-// native (always in bytes) column representation.
-func FromUTF16Column(p Point, chr int, content []byte) (Point, error) {
-       if !p.HasOffset() {
-               return Point{}, fmt.Errorf("FromUTF16Column: point is missing offset")
-       }
-       // if chr is 1 then no adjustment needed
-       if chr <= 1 {
-               return p, nil
-       }
-       if p.Offset() >= len(content) {
-               return p, fmt.Errorf("FromUTF16Column: offset (%v) greater than length of content (%v)", p.Offset(), len(content))
-       }
-       remains := content[p.Offset():]
-       // scan forward the specified number of characters
-       for count := 1; count < chr; count++ {
-               if len(remains) <= 0 {
-                       return Point{}, fmt.Errorf("FromUTF16Column: chr goes beyond the content")
-               }
-               r, w := utf8.DecodeRune(remains)
-               if r == '\n' {
-                       // Per the LSP spec:
-                       //
-                       // > If the character value is greater than the line length it
-                       // > defaults back to the line length.
-                       break
-               }
-               remains = remains[w:]
-               if r >= 0x10000 {
-                       // a two point rune
-                       count++
-                       // if we finished in a two point rune, do not advance past the first
-                       if count >= chr {
-                               break
-                       }
-               }
-               p.v.Column += w
-               p.v.Offset += w
-       }
-       return p, nil
-}