func primStr(e Env, head ast.Node, args []ast.Node) ast.Node {
var buffer bytes.Buffer
// TODO replace below with calls to .FriendlyString()
for _, arg := range args {
buffer.WriteString(arg.FriendlyString())
}
return ast.NewStr(buffer.String())
}
func primReadableString(e Env, head ast.Node, args []ast.Node) ast.Node {
return ast.NewStr(args[0].String())
}
func primReadLine(e Env, head ast.Node, args []ast.Node) ast.Node {
s := readLine() // TODO: uses a global variable :(
trimmed := strings.TrimSuffix(s, "\n")
return ast.NewStr(trimmed)
}