X-Git-Url: https://git.josue.xyz/?a=blobdiff_plain;f=.config%2Fcoc%2Fextensions%2Fcoc-go-data%2Ftools%2Fpkg%2Fmod%2Fgolang.org%2Fx%2Ftools%40v0.0.0-20201105173854-bc9fc8d8c4bc%2Fgo%2Fanalysis%2Fpasses%2Fnilfunc%2Fnilfunc.go;fp=.config%2Fcoc%2Fextensions%2Fcoc-go-data%2Ftools%2Fpkg%2Fmod%2Fgolang.org%2Fx%2Ftools%40v0.0.0-20201105173854-bc9fc8d8c4bc%2Fgo%2Fanalysis%2Fpasses%2Fnilfunc%2Fnilfunc.go;h=cd42c9897f2d4bfe30999296e22ae0b0936b4f40;hb=4d07c77cf4d78cab8639e13ddc3c22495e585b0b;hp=0000000000000000000000000000000000000000;hpb=b3950616b54221c40a7dab9099bda675007e5b6e;p=dotfiles%2F.git

diff --git a/.config/coc/extensions/coc-go-data/tools/pkg/mod/golang.org/x/tools@v0.0.0-20201105173854-bc9fc8d8c4bc/go/analysis/passes/nilfunc/nilfunc.go b/.config/coc/extensions/coc-go-data/tools/pkg/mod/golang.org/x/tools@v0.0.0-20201105173854-bc9fc8d8c4bc/go/analysis/passes/nilfunc/nilfunc.go
new file mode 100644
index 00000000..cd42c989
--- /dev/null
+++ b/.config/coc/extensions/coc-go-data/tools/pkg/mod/golang.org/x/tools@v0.0.0-20201105173854-bc9fc8d8c4bc/go/analysis/passes/nilfunc/nilfunc.go
@@ -0,0 +1,74 @@
+// 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 nilfunc defines an Analyzer that checks for useless
+// comparisons against nil.
+package nilfunc
+
+import (
+	"go/ast"
+	"go/token"
+	"go/types"
+
+	"golang.org/x/tools/go/analysis"
+	"golang.org/x/tools/go/analysis/passes/inspect"
+	"golang.org/x/tools/go/ast/inspector"
+)
+
+const Doc = `check for useless comparisons between functions and nil
+
+A useless comparison is one like f == nil as opposed to f() == nil.`
+
+var Analyzer = &analysis.Analyzer{
+	Name:     "nilfunc",
+	Doc:      Doc,
+	Requires: []*analysis.Analyzer{inspect.Analyzer},
+	Run:      run,
+}
+
+func run(pass *analysis.Pass) (interface{}, error) {
+	inspect := pass.ResultOf[inspect.Analyzer].(*inspector.Inspector)
+
+	nodeFilter := []ast.Node{
+		(*ast.BinaryExpr)(nil),
+	}
+	inspect.Preorder(nodeFilter, func(n ast.Node) {
+		e := n.(*ast.BinaryExpr)
+
+		// Only want == or != comparisons.
+		if e.Op != token.EQL && e.Op != token.NEQ {
+			return
+		}
+
+		// Only want comparisons with a nil identifier on one side.
+		var e2 ast.Expr
+		switch {
+		case pass.TypesInfo.Types[e.X].IsNil():
+			e2 = e.Y
+		case pass.TypesInfo.Types[e.Y].IsNil():
+			e2 = e.X
+		default:
+			return
+		}
+
+		// Only want identifiers or selector expressions.
+		var obj types.Object
+		switch v := e2.(type) {
+		case *ast.Ident:
+			obj = pass.TypesInfo.Uses[v]
+		case *ast.SelectorExpr:
+			obj = pass.TypesInfo.Uses[v.Sel]
+		default:
+			return
+		}
+
+		// Only want functions.
+		if _, ok := obj.(*types.Func); !ok {
+			return
+		}
+
+		pass.ReportRangef(e, "comparison of function %v %v nil is always %v", obj.Name(), e.Op, e.Op == token.NEQ)
+	})
+	return nil, nil
+}