revive/defaultrule/utils.go

package defaultrule

import (
	"go/ast"
	"strings"

	"github.com/mgechev/revive/file"
)

const styleGuideBase = "https://golang.org/wiki/CodeReviewComments"

// isBlank returns whether id is the blank identifier "_".
// If id == nil, the answer is false.
func isBlank(id *ast.Ident) bool { return id != nil && id.Name == "_" }

func isTest(f *file.File) bool {
	return strings.HasSuffix(f.Name, "_test.go")
}

var commonMethods = map[string]bool{
	"Error":     true,
	"Read":      true,
	"ServeHTTP": true,
	"String":    true,
	"Write":     true,
}

func receiverType(fn *ast.FuncDecl) string {
	switch e := fn.Recv.List[0].Type.(type) {
	case *ast.Ident:
		return e.Name
	case *ast.StarExpr:
		if id, ok := e.X.(*ast.Ident); ok {
			return id.Name
		}
	}
	// The parser accepts much more than just the legal forms.
	return "invalid-type"
}