make

README

Go Make

Makefile parsing and utilities in Go

Usage

Reading

The make.Parser is the primary way to read Makefiles.

f := os.Open("Makefile")
p := make.NewParser(f, nil)

m, err := p.ParseFile()

fmt.Println(m.Rules)

The more primitive make.Scanner and make.ScanTokens used by make.Parser can be used individually.

Using make.ScanTokens with a bufio.Scanner

f := os.Open("Makefile")
s := bufio.NewScanner(f)
s.Split(make.ScanTokens)

for s.Scan() {
  s.Bytes() // The current token byte slice i.e. []byte(":=")
  s.Text() // The current token as a string i.e. ":="
}

Using make.Scanner

f := os.Open("Makefile")
s := make.NewScanner(f, nil)

for pos, tok, lit := s.Scan(); tok != token.EOF; {
  fmt.Println(pos) // The position of tok
  fmt.Println(tok) // The current token.Token i.e. token.SIMPLE_ASSIGN
  fmt.Println(lit) // Literal tokens as a string i.e. "identifier"
}

if err := s.Err(); err != nil {
  fmt.Println(err)
}

Writing

Use make.Fprint to write ast nodes.

var file *ast.File

err := make.Fprint(os.Stdout, file)

Documentation

Index

• Variables

Variables

var (
	Fprint     = printer.Fprint
	NewParser  = parser.New
	NewScanner = scanner.New
	NewWriter  = writer.New
	ScanTokens = scanner.ScanTokens
)