Add a cargo run command

This currently only supports executing the `src/main.rs` convention, no other.

Close #149

Makefile

@@ -22,6 +22,7 @@ BINS = cargo \
 	     cargo-verify-project \
 	     cargo-git-checkout \
 		 cargo-test \
+		 cargo-run
 
 SRC = $(shell find src -name '*.rs' -not -path 'src/bin*')
 

src/bin/cargo-build.rs

@@ -56,7 +56,7 @@ fn execute(options: Options, shell: &mut MultiShell) -> CliResult<Option<()>> {
         "compile"
     };
 
-    let opts = CompileOptions {
+    let mut opts = CompileOptions {
         update: options.update_remotes,
         env: env,
         shell: shell,
@@ -64,7 +64,7 @@ fn execute(options: Options, shell: &mut MultiShell) -> CliResult<Option<()>> {
         target: options.target.as_ref().map(|t| t.as_slice()),
     };
 
-    ops::compile(&root, opts).map(|_| None).map_err(|err| {
+    ops::compile(&root, &mut opts).map(|_| None).map_err(|err| {
         CliError::from_boxed(err, 101)
     })
 }

src/bin/cargo-run.rs

@@ -0,0 +1,69 @@
+#![crate_name = "cargo-run"]
+#![feature(phase)]
+
+#[phase(plugin, link)]
+extern crate cargo;
+extern crate serialize;
+
+#[phase(plugin, link)]
+extern crate hammer;
+
+use std::os;
+use std::io::process::ExitStatus;
+
+use cargo::ops;
+use cargo::{execute_main_without_stdin};
+use cargo::core::{MultiShell};
+use cargo::util::{CliResult, CliError};
+use cargo::util::important_paths::find_project_manifest;
+
+#[deriving(PartialEq,Clone,Decodable)]
+struct Options {
+    manifest_path: Option<String>,
+    jobs: Option<uint>,
+    update: bool,
+    rest: Vec<String>,
+}
+
+hammer_config!(Options "Run the package's main executable", |c| {
+    c.short("jobs", 'j').short("update", 'u')
+})
+
+fn main() {
+    execute_main_without_stdin(execute);
+}
+
+fn execute(options: Options, shell: &mut MultiShell) -> CliResult<Option<()>> {
+    let root = match options.manifest_path {
+        Some(path) => Path::new(path),
+        None => try!(find_project_manifest(&os::getcwd(), "Cargo.toml")
+                    .map_err(|_| {
+                        CliError::new("Could not find Cargo.toml in this \
+                                       directory or any parent directory",
+                                      102)
+                    }))
+    };
+
+    let mut compile_opts = ops::CompileOptions {
+        update: options.update,
+        env: "compile",
+        shell: shell,
+        jobs: options.jobs,
+        target: None,
+    };
+
+    let err = try!(ops::run(&root, &mut compile_opts,
+                            options.rest.as_slice()).map_err(|err| {
+        CliError::from_boxed(err, 101)
+    }));
+    match err {
+        None => Ok(None),
+        Some(err) => {
+            Err(match err.exit {
+                Some(ExitStatus(i)) => CliError::from_boxed(box err, i as uint),
+                _ => CliError::from_boxed(box err, 101),
+            })
+        }
+    }
+}
+

src/bin/cargo-test.rs

@@ -44,7 +44,7 @@ fn execute(options: Options, shell: &mut MultiShell) -> CliResult<Option<()>> {
                     }))
     };
 
-    let compile_opts = ops::CompileOptions {
+    let mut compile_opts = ops::CompileOptions {
         update: options.update,
         env: "test",
         shell: shell,
@@ -52,7 +52,8 @@ fn execute(options: Options, shell: &mut MultiShell) -> CliResult<Option<()>> {
         target: None,
     };
 
-    let test_executables = try!(ops::compile(&root, compile_opts).map_err(|err| {
+    let test_executables = try!(ops::compile(&root,
+                                             &mut compile_opts).map_err(|err| {
         CliError::from_boxed(err, 101)
     }));
 

src/bin/cargo.rs

@@ -51,7 +51,9 @@ fn execute() {
             println!("Commands:");
             println!("  build          # compile the current project");
             println!("  test           # run the tests");
-            println!("  clean          # remove the target directory\n");
+            println!("  clean          # remove the target directory");
+            println!("  run            # build and execute src/main.rs");
+            println!("");
 
 
             let (_, options) = hammer::usage::<GlobalFlags>(false);

src/cargo/ops/cargo_compile.rs

@@ -38,8 +38,9 @@ pub struct CompileOptions<'a> {
     pub target: Option<&'a str>,
 }
 
-pub fn compile(manifest_path: &Path, options: CompileOptions) -> CargoResult<Vec<String>> {
+pub fn compile(manifest_path: &Path,
-    let CompileOptions { update, env, shell, jobs, target } = options;
+               options: &mut CompileOptions) -> CargoResult<Vec<String>> {
+    let CompileOptions { update, env, ref mut shell, jobs, target } = *options;
     let target = target.map(|s| s.to_string());
 
     log!(4, "compile; manifest-path={}", manifest_path.display());
@@ -60,7 +61,7 @@ pub fn compile(manifest_path: &Path, options: CompileOptions) -> CargoResult<Vec
     let source_ids = package.get_source_ids();
 
     let (packages, resolve) = {
-        let mut config = try!(Config::new(shell, update, jobs, target.clone()));
+        let mut config = try!(Config::new(*shell, update, jobs, target.clone()));
 
         let mut registry =
             try!(PackageRegistry::new(source_ids, override_ids, &mut config));
@@ -83,7 +84,7 @@ pub fn compile(manifest_path: &Path, options: CompileOptions) -> CargoResult<Vec
         target.get_profile().get_env() == env
     }).collect::<Vec<&Target>>();
 
-    let mut config = try!(Config::new(shell, update, jobs, target));
+    let mut config = try!(Config::new(*shell, update, jobs, target));
 
     try!(ops::compile_targets(env.as_slice(), targets.as_slice(), &package,
          &PackageSet::new(packages.as_slice()), &resolve, &mut config));

src/cargo/ops/cargo_run.rs

@@ -0,0 +1,23 @@
+use std::os;
+
+use ops;
+use util::{CargoResult, human, process, ProcessError};
+
+pub fn run(manifest_path: &Path,
+           options: &mut ops::CompileOptions,
+           args: &[String]) -> CargoResult<Option<ProcessError>> {
+    if !manifest_path.dir_path().join("src").join("main.rs").exists() {
+        return Err(human("`src/main.rs` must be present for `cargo run`"))
+    }
+
+    try!(ops::compile(manifest_path, options));
+    let exe = manifest_path.dir_path().join("target/main");
+    let exe = match exe.path_relative_from(&os::getcwd()) {
+        Some(path) => path,
+        None => exe,
+    };
+    let process = process(exe).args(args);
+
+    try!(options.shell.status("Running", process.to_string()));
+    Ok(process.exec().err())
+}

src/cargo/ops/mod.rs

@@ -2,8 +2,10 @@ pub use self::cargo_clean::clean;
 pub use self::cargo_compile::{compile, CompileOptions};
 pub use self::cargo_read_manifest::{read_manifest,read_package,read_packages};
 pub use self::cargo_rustc::compile_targets;
+pub use self::cargo_run::run;
 
 mod cargo_clean;
 mod cargo_compile;
 mod cargo_read_manifest;
 mod cargo_rustc;
+mod cargo_run;

tests/test_cargo_run.rs

@@ -0,0 +1,84 @@
+use std::path;
+
+use support::{project, execs};
+use support::{COMPILING, RUNNING};
+use hamcrest::{assert_that, existing_file};
+
+fn setup() {
+}
+
+test!(simple {
+    let p = project("foo")
+        .file("Cargo.toml", r#"
+            [project]
+            name = "foo"
+            version = "0.0.1"
+            authors = []
+        "#)
+        .file("src/main.rs", r#"
+            fn main() { println!("hello"); }
+        "#);
+
+    assert_that(p.cargo_process("cargo-run"),
+                execs().with_status(0).with_stdout(format!("\
+{compiling} foo v0.0.1 (file:{dir})
+{running} `target{sep}main`
+hello
+",
+        compiling = COMPILING,
+        running = RUNNING,
+        dir = p.root().display(),
+        sep = path::SEP).as_slice()));
+    assert_that(&p.bin("main"), existing_file());
+})
+
+test!(simple_with_args {
+    let p = project("foo")
+        .file("Cargo.toml", r#"
+            [project]
+            name = "foo"
+            version = "0.0.1"
+            authors = []
+        "#)
+        .file("src/main.rs", r#"
+            fn main() {
+                assert_eq!(std::os::args().get(1).as_slice(), "hello");
+                assert_eq!(std::os::args().get(2).as_slice(), "world");
+            }
+        "#);
+
+    assert_that(p.cargo_process("cargo-run").arg("hello").arg("world"),
+                execs().with_status(0));
+})
+
+test!(exit_code {
+    let p = project("foo")
+        .file("Cargo.toml", r#"
+            [project]
+            name = "foo"
+            version = "0.0.1"
+            authors = []
+        "#)
+        .file("src/main.rs", r#"
+            fn main() { std::os::set_exit_status(2); }
+        "#);
+
+    assert_that(p.cargo_process("cargo-run"),
+                execs().with_status(2));
+})
+
+test!(no_main_file {
+    let p = project("foo")
+        .file("Cargo.toml", r#"
+            [project]
+            name = "foo"
+            version = "0.0.1"
+            authors = []
+        "#)
+        .file("src/lib.rs", "");
+
+    assert_that(p.cargo_process("cargo-run"),
+                execs().with_status(101)
+                       .with_stderr("`src/main.rs` must be present for \
+                                     `cargo run`\n"));
+})

tests/tests.rs

@@ -27,3 +27,4 @@ mod test_cargo_compile_path_deps;
 mod test_cargo_test;
 mod test_shell;
 mod test_cargo_cross_compile;
+mod test_cargo_run;