diff options
Diffstat (limited to 'vendor/github.com/golang/protobuf/protoc-gen-go/generator/internal/remap/remap.go')
| -rw-r--r-- | vendor/github.com/golang/protobuf/protoc-gen-go/generator/internal/remap/remap.go | 117 |
1 files changed, 0 insertions, 117 deletions
diff --git a/vendor/github.com/golang/protobuf/protoc-gen-go/generator/internal/remap/remap.go b/vendor/github.com/golang/protobuf/protoc-gen-go/generator/internal/remap/remap.go deleted file mode 100644 index a9b6103..0000000 --- a/vendor/github.com/golang/protobuf/protoc-gen-go/generator/internal/remap/remap.go +++ /dev/null @@ -1,117 +0,0 @@ -// Go support for Protocol Buffers - Google's data interchange format -// -// Copyright 2017 The Go Authors. All rights reserved. -// https://github.com/golang/protobuf -// -// Redistribution and use in source and binary forms, with or without -// modification, are permitted provided that the following conditions are -// met: -// -// * Redistributions of source code must retain the above copyright -// notice, this list of conditions and the following disclaimer. -// * Redistributions in binary form must reproduce the above -// copyright notice, this list of conditions and the following disclaimer -// in the documentation and/or other materials provided with the -// distribution. -// * Neither the name of Google Inc. nor the names of its -// contributors may be used to endorse or promote products derived from -// this software without specific prior written permission. -// -// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS -// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT -// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR -// A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT -// OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, -// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT -// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, -// DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY -// THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT -// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE -// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. - -/* -Package remap handles tracking the locations of Go tokens in a source text -across a rewrite by the Go formatter. -*/ -package remap - -import ( - "fmt" - "go/scanner" - "go/token" -) - -// A Location represents a span of byte offsets in the source text. -type Location struct { - Pos, End int // End is exclusive -} - -// A Map represents a mapping between token locations in an input source text -// and locations in the correspnding output text. -type Map map[Location]Location - -// Find reports whether the specified span is recorded by m, and if so returns -// the new location it was mapped to. If the input span was not found, the -// returned location is the same as the input. -func (m Map) Find(pos, end int) (Location, bool) { - key := Location{ - Pos: pos, - End: end, - } - if loc, ok := m[key]; ok { - return loc, true - } - return key, false -} - -func (m Map) add(opos, oend, npos, nend int) { - m[Location{Pos: opos, End: oend}] = Location{Pos: npos, End: nend} -} - -// Compute constructs a location mapping from input to output. An error is -// reported if any of the tokens of output cannot be mapped. -func Compute(input, output []byte) (Map, error) { - itok := tokenize(input) - otok := tokenize(output) - if len(itok) != len(otok) { - return nil, fmt.Errorf("wrong number of tokens, %d ≠ %d", len(itok), len(otok)) - } - m := make(Map) - for i, ti := range itok { - to := otok[i] - if ti.Token != to.Token { - return nil, fmt.Errorf("token %d type mismatch: %s ≠ %s", i+1, ti, to) - } - m.add(ti.pos, ti.end, to.pos, to.end) - } - return m, nil -} - -// tokinfo records the span and type of a source token. -type tokinfo struct { - pos, end int - token.Token -} - -func tokenize(src []byte) []tokinfo { - fs := token.NewFileSet() - var s scanner.Scanner - s.Init(fs.AddFile("src", fs.Base(), len(src)), src, nil, scanner.ScanComments) - var info []tokinfo - for { - pos, next, lit := s.Scan() - switch next { - case token.SEMICOLON: - continue - } - info = append(info, tokinfo{ - pos: int(pos - 1), - end: int(pos + token.Pos(len(lit)) - 1), - Token: next, - }) - if next == token.EOF { - break - } - } - return info -} |