https://github.com/nishanths/predeclared
Find declarations in Go source code that shadow predeclared identifiers
https://github.com/nishanths/predeclared
ast go lint
Last synced: 7 days ago
JSON representation
Find declarations in Go source code that shadow predeclared identifiers
- Host: GitHub
- URL: https://github.com/nishanths/predeclared
- Owner: nishanths
- License: bsd-3-clause
- Created: 2017-12-10T03:37:52.000Z (over 7 years ago)
- Default Branch: master
- Last Pushed: 2025-03-31T09:55:53.000Z (about 2 months ago)
- Last Synced: 2025-04-12T11:58:34.712Z (about 1 month ago)
- Topics: ast, go, lint
- Language: Go
- Homepage: https://godoc.org/github.com/nishanths/predeclared
- Size: 53.7 KB
- Stars: 30
- Watchers: 4
- Forks: 5
- Open Issues: 0
-
Metadata Files:
- Readme: README.md
- License: LICENSE
Awesome Lists containing this project
README
# predeclared [](https://travis-ci.org/nishanths/predeclared) [](http://godoc.org/github.com/nishanths/predeclared)
Find code that overrides one of Go's predeclared identifiers (`new`, `make`, `append` `uint`, etc.).
The list of predeclared identifiers can be found in the [spec](https://golang.org/ref/spec#Predeclared_identifiers).
```
go get github.com/nishanths/predeclared
```
See [godoc](https://godoc.org/github.com/nishanths/predeclared) or run `predeclared` without arguments to print usage.
## Test
```
cd passes/predeclared && go test
```
## Examples
Given a package with the file:
```go
package pkg // import "example.org/foo/pkg"
func copy() {}
func print() {}
func foo() string {
string := "x"
return string
}
type int struct{}
```
running:
```
predeclared example.org/foo/pkg
```
prints:
```
example.go:3:6: function "copy" has same name as predeclared identifier
example.go:4:6: function "print" has same name as predeclared identifier
example.go:7:2: variable "string" has same name as predeclared identifier
example.go:11:6: type "int" has same name as predeclared identifier
```
Running the program on the standard library's `text` package and subpackages produces:
```sh
$ predeclared text/...
/usr/local/go/src/text/template/parse/node.go:554:33: param "true" has same name as predeclared identifier
/usr/local/go/src/text/template/parse/node.go:599:3: variable "rune" has same name as predeclared identifier
/usr/local/go/src/text/template/funcs.go:164:36: param "cap" has same name as predeclared identifier
/usr/local/go/src/text/template/funcs.go:233:3: variable "cap" has same name as predeclared identifier
/usr/local/go/src/text/template/template.go:218:30: param "new" has same name as predeclared identifier
/usr/local/go/src/text/template/exec_test.go:232:21: param "error" has same name as predeclared identifier
```