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)))
}
}
func builtinLoad(context *runtime.FunctionCallContext) (*runtime.Value, error) {
if err := runtime.ValidateArguments(context, runtime.StringValue); err != nil {
return nil, err
}
file, err := util.NewFile(context.Args[0].Str)
if err != nil {
return nil, err
}
l := lexer.NewLexer(lexer.NewSourceFromFile(file))
util.ReportError(l.Lex(), false)
p := parser.NewParser(l.Tokens)
util.ReportError(p.Parse(), false)
b := runtime.NewBlock(p.Nodes, runtime.NewScope(context.Block.Scope))
result, err := b.Eval()
if err != nil {
return nil, err
}
for key, value := range b.Scope.Symbols {
if value.Exported {
if value.Value.Type == runtime.FunctionValue {
value.Value.Function.CustomScope = b.Scope
}
context.Block.Scope.SetSymbol(b.SymbolName(key), value)
}
}
return result, nil
}