Implementing --deps flag

- Adding a ModuleId type alias to specify original url or local file of
dependency
- Modifying ModuleMetaData class to contain ModuleId
- Adding a --deps flag

3 files changed, 8 insertions, 3 deletions

diff --git a/src/flags.rs b/src/flags.rs
index 1b6299e3c..13f065735 100644
--- a/src/flags.rs
+++ b/src/flags.rs
@@ -21,12 +21,12 @@ pub struct DenoFlags {
   pub allow_write: bool,
   pub allow_net: bool,
   pub allow_env: bool,
+  pub deps_flag: bool,
 }
 
 pub fn print_usage() {
   println!(
     "Usage: deno script.ts
-
 --allow-write      Allow file system write access.
 --allow-net        Allow network access.
 --allow-env        Allow environment access.
@@ -34,7 +34,8 @@ pub fn print_usage() {
 -r or --reload     Reload cached remote resources.
 -D or --log-debug  Log debug output.
 -h or --help       Print this message.
---v8-options       Print V8 command line options."
+--v8-options       Print V8 command line options.
+--deps             Print module dependencies."
   );
 }
 
@@ -54,6 +55,7 @@ pub fn set_flags(args: Vec<String>) -> (DenoFlags, Vec<String>) {
         "--allow-write" => flags.allow_write = true,
         "--allow-net" => flags.allow_net = true,
         "--allow-env" => flags.allow_env = true,
+        "--deps" => flags.deps_flag = true,
         "--" => break,
         _ => unimplemented!(),
       }
@@ -108,13 +110,14 @@ fn test_set_flags_2() {
 #[test]
 fn test_set_flags_3() {
   let (flags, rest) =
-    set_flags(svec!["deno", "-r", "script.ts", "--allow-write"]);
+    set_flags(svec!["deno", "-r", "--deps", "script.ts", "--allow-write"]);
   assert_eq!(rest, svec!["deno", "script.ts"]);
   assert_eq!(
     flags,
     DenoFlags {
       reload: true,
       allow_write: true,
+      deps_flag: true,
       ..DenoFlags::default()
     }
   );
diff --git a/src/handlers.rs b/src/handlers.rs
index 3e6623e3d..0cd5b7367 100644
--- a/src/handlers.rs
+++ b/src/handlers.rs
@@ -116,6 +116,7 @@ fn handle_start(
       cwd: Some(cwd_off),
       argv: Some(argv_off),
       debug_flag: deno.flags.log_debug,
+      deps_flag: deno.flags.deps_flag,
       ..Default::default()
     },
   );
diff --git a/src/msg.fbs b/src/msg.fbs
index be9b07af7..e28e5559b 100644
--- a/src/msg.fbs
+++ b/src/msg.fbs
@@ -87,6 +87,7 @@ table StartRes {
   cwd: string;
   argv: [string];
   debug_flag: bool;
+  deps_flag: bool;
 }
 
 table CodeFetch {