code review 7531045: cmd/vet: add assembly checker

src/cmd/vet/main.go

 // Copyright 2010 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.
 
 // Vet is a simple checker for static errors in Go source code.
 // See doc.go for more information.
 package main
 
 import (
         "bytes"
@@ skipping 223 matching lines @@
                 return err
         }
         // One package per directory. Ignore the files themselves.
         if !f.IsDir() {
                 return nil
         }
         doPackageDir(path)
         return nil
 }
 
+func (pkg *Package) hasFileWithSuffix(suffix string) bool {
+        for _, f := range pkg.files {
+                if strings.HasSuffix(f.name, suffix) {
+                        return true
+                }
+        }
+        return false
+}
+
 // walkDir recursively walks the tree looking for Go packages.
 func walkDir(root string) {
         filepath.Walk(root, visit)
 }
 
 // errorf formats the error to standard error, adding program
 // identification and a newline, and exits.
 func errorf(format string, args ...interface{}) {
         fmt.Fprintf(os.Stderr, "vet: "+format+"\n", args...)
         os.Exit(2)
@@ skipping 143 matching lines @@
 func (f *File) walkRangeStmt(n *ast.RangeStmt) {
         checkRangeLoop(f, n)
 }
 
 // gofmt returns a string representation of the expression.
 func (f *File) gofmt(x ast.Expr) string {
         f.b.Reset()
         printer.Fprint(&f.b, f.fset, x)
         return f.b.String()
 }