Example #1
0
func ExampleFprint() {
	// Parse source file and extract the AST without comments for
	// this function, with position information referring to the
	// file set fset.
	funcAST, fset := parseFunc("example_test.go", "ExampleFprint")

	// Print the function body into buffer buf.
	// The file set is provided to the printer so that it knows
	// about the original source formatting and can add additional
	// line breaks where they were present in the source.
	var buf bytes.Buffer
	printer.Fprint(&buf, fset, funcAST.Body)

	// Remove braces {} enclosing the function body, unindent,
	// and trim leading and trailing white space.
	s := buf.String()
	s = s[1 : len(s)-1]
	s = strings.TrimSpace(strings.Replace(s, "\n\t", "\n", -1))

	// Print the cleaned-up body text to stdout.
	fmt.Println(s)

	// output:
	// funcAST, fset := parseFunc("example_test.go", "ExampleFprint")
	//
	// var buf bytes.Buffer
	// printer.Fprint(&buf, fset, funcAST.Body)
	//
	// s := buf.String()
	// s = s[1 : len(s)-1]
	// s = strings.TrimSpace(strings.Replace(s, "\n\t", "\n", -1))
	//
	// fmt.Println(s)
}
Example #2
0
func nodeFmt(node interface{}, fset *token.FileSet) string {
	var buf bytes.Buffer
	printer.Fprint(&buf, fset, node)
	return strings.Replace(strings.TrimSpace(buf.String()), "\n", "\n\t", -1)
}