From 1a7aebb5cf7e087e2db9fa4b132c35434ded099d Mon Sep 17 00:00:00 2001
From: Gleb Koval <gleb@koval.net>
Date: Fri, 31 Jan 2025 16:29:30 +0000
Subject: [PATCH] feat: use cli parsing library and return randomly 0, 100 or
200
---
project.scala | 1 +
src/main/wacc/Main.scala | 42 +++++++++++++++++++++++++++++-----------
2 files changed, 32 insertions(+), 11 deletions(-)
diff --git a/project.scala b/project.scala
index 7cf3277..7a42a9c 100644
--- a/project.scala
+++ b/project.scala
@@ -4,6 +4,7 @@
// dependencies
//> using dep com.github.j-mie6::parsley::5.0.0-M10
//> using dep com.lihaoyi::os-lib::0.11.3
+//> using dep com.github.scopt::scopt::4.1.0
//> using test.dep org.scalatest::scalatest::3.2.19
// these are all sensible defaults to catch annoying issues
diff --git a/src/main/wacc/Main.scala b/src/main/wacc/Main.scala
index a4c9fd7..1aa3eb3 100644
--- a/src/main/wacc/Main.scala
+++ b/src/main/wacc/Main.scala
@@ -1,16 +1,36 @@
package wacc
-import parsley.{Success, Failure}
+import scopt.OParser
+import java.io.File
-def main(args: Array[String]): Unit = {
- println("hello WACC!")
+case class CliConfig(
+ file: File = new File(".")
+)
- args.headOption match {
- case Some(expr) =>
- parser.parse(expr) match {
- case Success(x) => println(s"$expr = $x")
- case Failure(msg) => println(msg)
- }
- case None => println("please enter an expression")
- }
+val cliBuilder = OParser.builder[CliConfig]
+val cliParser = {
+ import cliBuilder._
+ OParser.sequence(
+ programName("wacc-compiler"),
+ help('h', "help")
+ .text("Prints this help message"),
+ arg[File]("<file>")
+ .text("Input WACC source file")
+ .required()
+ .action((f, c) => c.copy(file = f))
+ .validate(f =>
+ if (!f.exists) failure("File does not exist")
+ else if (!f.isFile) failure("File must be a regular file")
+ else if (!f.getName.endsWith(".wacc"))
+ failure("File must have .wacc extension")
+ else success
+ )
+ )
}
+
+def main(args: Array[String]): Unit =
+ OParser.parse(cliParser, args, CliConfig()) match {
+ case Some(config) =>
+ System.exit(scala.util.Random.between(0, 3) * 100)
+ case None =>
+ }