mirror of
https://github.com/kanaka/mal.git
synced 2024-09-11 21:57:38 +03:00
- Reorder README to have implementation list after "learning tool" bullet. - This also moves tests/ and libs/ into impls. It would be preferrable to have these directories at the top level. However, this causes difficulties with the wasm implementations which need pre-open directories and have trouble with paths starting with "../../". So in lieu of that, symlink those directories to the top-level. - Move the run_argv_test.sh script into the tests directory for general hygiene.
40 lines
715 B
Scala
40 lines
715 B
Scala
import reader.tokenize
|
|
|
|
object step1_read_print {
|
|
// read
|
|
def READ(str: String): Any = {
|
|
reader.read_str(str)
|
|
}
|
|
|
|
// eval
|
|
def EVAL(ast: Any, env: String): Any = {
|
|
ast
|
|
}
|
|
|
|
// print
|
|
def PRINT(exp: Any): String = {
|
|
printer._pr_str(exp, true)
|
|
}
|
|
|
|
// repl
|
|
def main(args: Array[String]) = {
|
|
val REP = (str: String) => {
|
|
PRINT(EVAL(READ(str), ""))
|
|
}
|
|
|
|
var line:String = null
|
|
while ({line = readLine("user> "); line != null}) {
|
|
try {
|
|
println(REP(line))
|
|
} catch {
|
|
case e : Exception => {
|
|
println("Error: " + e.getMessage)
|
|
println(" " + e.getStackTrace.mkString("\n "))
|
|
}
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
// vim: ts=2:sw=2
|