Code cleanup.

Reviewed-on: #2

README.md

@@ -32,15 +32,29 @@ cd demo
 raven run main.Main
 ```
 
+## Raven commands
+Usage: raven <COMMAND>
+
+Commands:
+  new    Create a new raven project
+  init   Create a new raven project in an existing directory
+  build  Compile the current project
+  run    Run the current project
+  test   !!! BORKED !!! Run the tests
+  clean  Remove the target directory and caching
+  help   Print this message or the help of the given subcommand(s)
+
+Options:
+  -h, --help     Print help
+  -V, --version  Print version
+
 ## Future plans
 
-- [ ] Fix `raven test`. Totally borked.
-- [ ] Make `nest run` fall back to an entry point specified in Nest.toml, when
+- [ ] Make `raven run` fall back to an entry point specified in Nest.toml, when
     none provided.
 - [ ] Fix project structure, eliminate inter-dependencies.
   - [ ] Separate out `java.rs` into a dedicated wrapper library.
-- [ ] Possibly add support for pulling remote packages via `nest add`. This
+- [ ] Possibly add support for pulling remote packages via `raven add`. This
     will be implemented should there arise a need.
 - [ ] Wrap errors properly, instead of hap-hazardly using `anyhow`
 - [ ] Maybe proper logging?
-- [ ] Fix using hashes to avoid unnesscesary recompilation.

assets/src/main/Main.java

@@ -1,5 +1,3 @@
-package main;
-
 public class Main {
 
     public static void main(String[] args) {

assets/src/test/MainTest.java

@@ -1,12 +1,10 @@
-package test;
-
-public class Main {
+public class MainTest {
 
     public static void main(String[] args) {
         testAdd();
     }
 
     public static void testAdd() {
-        assert main.Main.add(2, 2) == 4;
+        assert Main.add(2, 2) == 4;
     }
 }

src/java.rs

@@ -17,11 +17,15 @@ pub struct JVMBuilder {
     monitor: bool,
     ram_min: Option<ByteSize>,
     ram_max: Option<ByteSize>,
+    class_path: PathBuf,
 }
 
 impl JVMBuilder {
-    pub fn new() -> Self {
-        Self::default()
+    pub fn new<P: AsRef<Path>>(class_path: P) -> Self {
+        Self {
+            class_path: class_path.as_ref().to_path_buf(),
+            ..Default::default()
+        }
     }
 
     pub fn assertions(&mut self, assertions: bool) -> &mut Self {
@@ -46,7 +50,9 @@ impl JVMBuilder {
     }
 
     pub fn build(&self) -> JVM {
-        let mut flags = vec![];
+        let mut flags = vec![VMFlag::Classpath {
+            path: self.class_path.to_owned(),
+        }];
 
         if self.assertions {
             flags.push(VMFlag::EnableAssert);
@@ -85,7 +91,8 @@ impl JVM {
                 .into_iter()
                 .flat_map(|f| Into::<Vec<String>>::into(f)),
         );
-        cmd.push(entry_point.as_ref().display().to_string());
+
+        cmd.push(entry_point.as_ref().to_path_buf().display().to_string());
 
         let result = crate::io::run_process(cmd.as_slice());
 
@@ -110,6 +117,7 @@ impl JVM {
 
 #[derive(Debug, Clone)]
 pub enum VMFlag {
+    Classpath { path: PathBuf },
     EnableAssert,
     HeapMax { size: ByteSize },
     HeapMin { size: ByteSize },
@@ -118,12 +126,10 @@ pub enum VMFlag {
 
 impl Into<Vec<String>> for VMFlag {
     fn into(self) -> Vec<String> {
-        match self {
-            Self::EnableAssert => vec![String::from("-ea")],
-            Self::HeapMax { size } => vec![format!("Xmx{}", size)],
-            Self::HeapMin { size } => vec![format!("Xms{}", size)],
-            Self::Version => vec![String::from("--version")],
-        }
+        self.to_string()
+            .split_ascii_whitespace()
+            .map(|s| s.to_string())
+            .collect()
     }
 }
 
@@ -135,9 +141,10 @@ impl fmt::Display for VMFlag {
             f,
             "-{}",
             match self {
+                Self::Classpath { path } => format!("classpath {}", path.display()),
                 Self::EnableAssert => String::from("ea"),
-                Self::HeapMax { size } => format!("Xmx{}", size),
-                Self::HeapMin { size } => format!("Xms{}", size),
+                Self::HeapMax { size } => format!("Xmx{}", size.as_u64()),
+                Self::HeapMin { size } => format!("Xms{}", size.as_u64()),
                 Self::Version => String::from("-version"), // --version
             }
         )
@@ -213,14 +220,14 @@ impl Compiler {
 
 #[derive(Debug, Clone)]
 pub enum CompilerFlag {
-    Destination { path: PathBuf },
     Classpath { path: PathBuf },
+    Destination { path: PathBuf },
 }
 
 impl Into<Vec<String>> for CompilerFlag {
     fn into(self) -> Vec<String> {
         match self {
-            Self::Classpath { path } => vec!["-cp".to_string(), path.display().to_string()],
+            Self::Classpath { path } => vec!["-classpath".to_string(), path.display().to_string()],
             Self::Destination { path } => vec!["-d".to_string(), path.display().to_string()],
         }
     }

src/main.rs

@@ -140,14 +140,14 @@ fn init() -> anyhow::Result<()> {
         f.write_all(include_bytes!("../assets/src/main/Main.java"))?;
     }
 
-    // Make src/test/Main.java
+    // Make src/test/MainTest.java
     if let Result::Ok(mut f) = OpenOptions::new().write(true).create_new(is_empty).open(
         DIR_TEST
             .clone()
-            .join("Main")
+            .join("MainTest")
             .with_extension(JAVA_EXT_SOURCE),
     ) {
-        f.write_all(include_bytes!("../assets/src/test/Main.java"))?;
+        f.write_all(include_bytes!("../assets/src/test/MainTest.java"))?;
     }
 
     // git init .
@@ -164,7 +164,7 @@ fn init() -> anyhow::Result<()> {
         f.read_to_string(&mut buf)?;
 
         for ignored in [
-            DIR_TARGET.as_path().display().to_string(),
+            format!("{}/", DIR_TARGET.file_name().unwrap().display()),
             format!("*.{}", JAVA_EXT_CLASS),
         ] {
             if !buf.contains(&ignored) {
@@ -240,7 +240,7 @@ fn run<P: AsRef<Path>>(
     // JRE pathing will be messed up without this.
     crate::env::set_cwd(DIR_TARGET.as_path())?;
 
-    java::JVMBuilder::new()
+    java::JVMBuilder::new(DIR_TARGET.as_path())
         .assertions(assertions)
         .monitor(true)
         .build()
@@ -257,13 +257,13 @@ fn test(assertions: bool) -> anyhow::Result<(Option<String>, Option<String>)> {
     // Change cwd to avoid Java pathing issues.
     crate::env::set_cwd(DIR_TARGET.as_path())?;
 
-    java::JVMBuilder::new()
+    java::JVMBuilder::new(DIR_TARGET.as_path())
         .assertions(assertions)
         .ram_min(ByteSize::mib(128))
         .ram_max(ByteSize::mib(512))
         .monitor(true)
         .build()
-        .run(DIR_TEST.as_path())
+        .run(DIR_TARGET.as_path())
 }
 
 fn clean() {