Fix checking for not gofmt-ed files.

Author: Denis Krivak

getters.go

@@ -1,11 +1,10 @@
 package godot
 
 import (
-	"bytes"
 	"fmt"
 	"go/ast"
-	"go/format"
 	"go/token"
+	"io/ioutil"
 	"strings"
 )
 
@@ -20,12 +19,14 @@ func getComments(file *ast.File, fset *token.FileSet, scope Scope) ([]comment, e
 		return nil, nil
 	}
 
-	// Render AST representation to a string
-	var buf bytes.Buffer
-	if err := format.Node(&buf, fset, file); err != nil {
-		return nil, fmt.Errorf("render file: %v", err)
+	// Read original file. This is necessary for making a replacements for
+	// inline comments. I couldn't find a better way to get original line
+	// with code and comment without reading the file. Function `Format`
+	// from "go/format" won't help here if the original file is not gofmt-ed.
+	lines, err := readFile(file, fset)
+	if err != nil {
+		return nil, fmt.Errorf("read file: %v", err)
 	}
-	lines := strings.Split(buf.String(), "\n")
 
 	// Check consistency to avoid checking index in each function
 	lastComment := file.Comments[len(file.Comments)-1]
@@ -188,6 +189,16 @@ func getText(comment *ast.CommentGroup) (s string) {
 	return s[:len(s)-1] // trim last "\n"
 }
 
+// readFile reads file and returns it's lines as strings.
+func readFile(file *ast.File, fset *token.FileSet) ([]string, error) {
+	fname := fset.File(file.Package)
+	f, err := ioutil.ReadFile(fname.Name())
+	if err != nil {
+		return nil, err
+	}
+	return strings.Split(string(f), "\n"), nil
+}
+
 // setDecl sets `decl` flag to comments which are declaration comments.
 func setDecl(comments, decl []comment) {
 	for _, d := range decl {

testdata/check/main.go

@@ -16,6 +16,14 @@ import (
 	"unsafe"
 )
 
+// Not gofmt-ed code [PASS].
+const (
+    one = 1
+
+        two = 2
+    
+)
+
 //args: tagged comment without period [PASS]
 
 // #tag hashtag comment without period [PASS]

testdata/get/main.go

@@ -4,6 +4,14 @@ package example
 // Import comment [DECL].
 import "fmt"
 
+// Not gofmt-ed code [DECL].
+const (
+    one = 1
+
+        two = 2
+    
+)
+
 // Top level one-line comment [TOP].
 
 // Top level