func run(source lexer.Source) {
l := lexer.NewLexer(source)
util.Timed("lexing", *debug, func() {
util.ReportError(l.Lex(), false)
})
p := parser.NewParser(l.Tokens)
util.Timed("parsing", *debug, func() {
util.ReportError(p.Parse(), false)
})
if *ast {
bytes, _ := json.MarshalIndent(p, "", " ")
fmt.Println(string(bytes))
} else {
b := apply(runtime.NewBlock(p.Nodes, runtime.NewScope(nil)))
util.Timed("runtime", *debug, func() {
_, err := b.Eval()
if err != nil {
util.ReportError(err, false)
}
})
}
}
func main() {
flag.Usage = usage
flag.Parse()
if len(flag.Args()) > 0 {
var file *util.File
util.Timed("file reading", *debug, func() {
os.Chdir(filepath.Dir(flag.Arg(0)))
f, err := util.NewFile(filepath.Base(flag.Arg(0)))
if err != nil {
util.ReportError(err, false)
}
file = f
})
run(lexer.NewSourceFromFile(file))
} else if *runRepl {
s := repl.NewReplSession(apply(runtime.NewBlock(nil, runtime.NewScope(nil))))
s.Run()
} else {
bytes, err := ioutil.ReadAll(os.Stdin)
if err != nil {
util.ReportError(err, false)
}
run(lexer.NewSourceFromString("<stdin>", string(bytes)))
}
}