Example #1
0
File: parse.go Project: 8l/leaf
func mainParse(args []string) {
	fset := flag.NewFlagSet("leaf-parse", flag.ExitOnError)
	astFlag := fset.Bool("ast", false, "print AST instead of token tree")

	fset.Parse(args)

	files := fset.Args()

	if len(files) == 0 {
		fmt.Fprintln(os.Stderr, "no input file.")
		return
	}

	for _, f := range files {
		fmt.Printf("[%s]\n", f)

		if *astFlag {
			res, errs := parser.Parse(f)
			printErrors(errs)
			if res != nil {
				p := prt.New(os.Stdout)
				p.Indent = "    "
				ast.Print(p, res)
			}
		} else {
			tree, errs := parser.ParseTree(f)
			printErrors(errs)
			if tree != nil { // might be nil when the file does not exist
				tree.PrintTree(os.Stdout)
			}
		}
	}
}
Example #2
0
File: build.go Project: 8l/leaf
func mainBuild(args []string) {
	build := ir.NewBuild()

	pname := "test"
	gen := codegen.NewGen(pname, build)
	files := args

	for _, f := range files {
		astree, errs := parser.Parse(f)
		if len(errs) > 0 {
			printErrors(errs)
			os.Exit(-1)
		}

		gen.AddFile(astree)
	}

	errs := gen.Gen()
	if len(errs) > 0 {
		printErrors(errs)
		os.Exit(1)
	}

	// build.Print()

	fout, e := os.Create("out.e8")
	if e != nil {
		printError(e)
		os.Exit(1)
	}

	errs = build.Build(pname, fout)
	if len(errs) > 0 {
		printErrors(errs)
		os.Exit(1)
	}

	e = fout.Close()
	if e != nil {
		printError(e)
		os.Exit(1)
	}
}