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// Copyright 2011 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 main
import "go/ast"
func init() {
register(mathFix)
}
var mathFix = fix{
"math",
"2011-09-29",
math,
`Remove the leading F from math functions such as Fabs.
http://codereview.appspot.com/5158043
`,
}
var mathRenames = []struct{ in, out string }{
{"Fabs", "Abs"},
{"Fdim", "Dim"},
{"Fmax", "Max"},
{"Fmin", "Min"},
{"Fmod", "Mod"},
}
func math(f *ast.File) bool {
if !imports(f, "math") {
return false
}
fixed := false
walk(f, func(n interface{}) {
// Rename functions.
if expr, ok := n.(ast.Expr); ok {
for _, s := range mathRenames {
if isPkgDot(expr, "math", s.in) {
expr.(*ast.SelectorExpr).Sel.Name = s.out
fixed = true
return
}
}
}
})
return fixed
}
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