summaryrefslogtreecommitdiff
path: root/vendor/golang.org/x/tools/internal/tokeninternal/tokeninternal.go
diff options
context:
space:
mode:
authorLibravatar dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>2023-03-06 08:09:17 +0000
committerLibravatar GitHub <noreply@github.com>2023-03-06 08:09:17 +0000
commit06524ac25965b171d156c81ec7e480fb812d986b (patch)
tree2cead7c39fb986a608f483461762aea2bf1df857 /vendor/golang.org/x/tools/internal/tokeninternal/tokeninternal.go
parent[chore] Print human readable config (#1589) (diff)
downloadgotosocial-06524ac25965b171d156c81ec7e480fb812d986b.tar.xz
[chore]: Bump golang.org/x/text from 0.7.0 to 0.8.0 (#1594)
Bumps [golang.org/x/text](https://github.com/golang/text) from 0.7.0 to 0.8.0. - [Release notes](https://github.com/golang/text/releases) - [Commits](https://github.com/golang/text/compare/v0.7.0...v0.8.0) --- updated-dependencies: - dependency-name: golang.org/x/text dependency-type: direct:production update-type: version-update:semver-minor ... Signed-off-by: dependabot[bot] <support@github.com> Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>
Diffstat (limited to 'vendor/golang.org/x/tools/internal/tokeninternal/tokeninternal.go')
-rw-r--r--vendor/golang.org/x/tools/internal/tokeninternal/tokeninternal.go59
1 files changed, 59 insertions, 0 deletions
diff --git a/vendor/golang.org/x/tools/internal/tokeninternal/tokeninternal.go b/vendor/golang.org/x/tools/internal/tokeninternal/tokeninternal.go
new file mode 100644
index 000000000..a3fb2d4f2
--- /dev/null
+++ b/vendor/golang.org/x/tools/internal/tokeninternal/tokeninternal.go
@@ -0,0 +1,59 @@
+// Copyright 2023 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 tokeninternal provides access to some internal features of the token
+// package.
+package tokeninternal
+
+import (
+ "go/token"
+ "sync"
+ "unsafe"
+)
+
+// GetLines returns the table of line-start offsets from a token.File.
+func GetLines(file *token.File) []int {
+ // token.File has a Lines method on Go 1.21 and later.
+ if file, ok := (interface{})(file).(interface{ Lines() []int }); ok {
+ return file.Lines()
+ }
+
+ // This declaration must match that of token.File.
+ // This creates a risk of dependency skew.
+ // For now we check that the size of the two
+ // declarations is the same, on the (fragile) assumption
+ // that future changes would add fields.
+ type tokenFile119 struct {
+ _ string
+ _ int
+ _ int
+ mu sync.Mutex // we're not complete monsters
+ lines []int
+ _ []struct{}
+ }
+ type tokenFile118 struct {
+ _ *token.FileSet // deleted in go1.19
+ tokenFile119
+ }
+
+ type uP = unsafe.Pointer
+ switch unsafe.Sizeof(*file) {
+ case unsafe.Sizeof(tokenFile118{}):
+ var ptr *tokenFile118
+ *(*uP)(uP(&ptr)) = uP(file)
+ ptr.mu.Lock()
+ defer ptr.mu.Unlock()
+ return ptr.lines
+
+ case unsafe.Sizeof(tokenFile119{}):
+ var ptr *tokenFile119
+ *(*uP)(uP(&ptr)) = uP(file)
+ ptr.mu.Lock()
+ defer ptr.mu.Unlock()
+ return ptr.lines
+
+ default:
+ panic("unexpected token.File size")
+ }
+}