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path: root/vendor/golang.org/x/tools/go/loader/util.go
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-rw-r--r--vendor/golang.org/x/tools/go/loader/util.go124
1 files changed, 0 insertions, 124 deletions
diff --git a/vendor/golang.org/x/tools/go/loader/util.go b/vendor/golang.org/x/tools/go/loader/util.go
deleted file mode 100644
index 7f38dd7..0000000
--- a/vendor/golang.org/x/tools/go/loader/util.go
+++ /dev/null
@@ -1,124 +0,0 @@
-// Copyright 2013 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 loader
-
-import (
- "go/ast"
- "go/build"
- "go/parser"
- "go/token"
- "io"
- "os"
- "strconv"
- "sync"
-
- "golang.org/x/tools/go/buildutil"
-)
-
-// We use a counting semaphore to limit
-// the number of parallel I/O calls per process.
-var ioLimit = make(chan bool, 10)
-
-// parseFiles parses the Go source files within directory dir and
-// returns the ASTs of the ones that could be at least partially parsed,
-// along with a list of I/O and parse errors encountered.
-//
-// I/O is done via ctxt, which may specify a virtual file system.
-// displayPath is used to transform the filenames attached to the ASTs.
-//
-func parseFiles(fset *token.FileSet, ctxt *build.Context, displayPath func(string) string, dir string, files []string, mode parser.Mode) ([]*ast.File, []error) {
- if displayPath == nil {
- displayPath = func(path string) string { return path }
- }
- var wg sync.WaitGroup
- n := len(files)
- parsed := make([]*ast.File, n)
- errors := make([]error, n)
- for i, file := range files {
- if !buildutil.IsAbsPath(ctxt, file) {
- file = buildutil.JoinPath(ctxt, dir, file)
- }
- wg.Add(1)
- go func(i int, file string) {
- ioLimit <- true // wait
- defer func() {
- wg.Done()
- <-ioLimit // signal
- }()
- var rd io.ReadCloser
- var err error
- if ctxt.OpenFile != nil {
- rd, err = ctxt.OpenFile(file)
- } else {
- rd, err = os.Open(file)
- }
- if err != nil {
- errors[i] = err // open failed
- return
- }
-
- // ParseFile may return both an AST and an error.
- parsed[i], errors[i] = parser.ParseFile(fset, displayPath(file), rd, mode)
- rd.Close()
- }(i, file)
- }
- wg.Wait()
-
- // Eliminate nils, preserving order.
- var o int
- for _, f := range parsed {
- if f != nil {
- parsed[o] = f
- o++
- }
- }
- parsed = parsed[:o]
-
- o = 0
- for _, err := range errors {
- if err != nil {
- errors[o] = err
- o++
- }
- }
- errors = errors[:o]
-
- return parsed, errors
-}
-
-// scanImports returns the set of all import paths from all
-// import specs in the specified files.
-func scanImports(files []*ast.File) map[string]bool {
- imports := make(map[string]bool)
- for _, f := range files {
- for _, decl := range f.Decls {
- if decl, ok := decl.(*ast.GenDecl); ok && decl.Tok == token.IMPORT {
- for _, spec := range decl.Specs {
- spec := spec.(*ast.ImportSpec)
-
- // NB: do not assume the program is well-formed!
- path, err := strconv.Unquote(spec.Path.Value)
- if err != nil {
- continue // quietly ignore the error
- }
- if path == "C" {
- continue // skip pseudopackage
- }
- imports[path] = true
- }
- }
- }
- }
- return imports
-}
-
-// ---------- Internal helpers ----------
-
-// TODO(adonovan): make this a method: func (*token.File) Contains(token.Pos)
-func tokenFileContainsPos(f *token.File, pos token.Pos) bool {
- p := int(pos)
- base := f.Base()
- return base <= p && p < base+f.Size()
-}