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)
}
}
}
}
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)
}
}