Implement reptr parse <file> CLI command

reptr/src/commands.rs

@@ -1,3 +1,5 @@
+pub mod parse_file;
 pub mod scan_dir;
 
+pub use parse_file::parse_file;
 pub use scan_dir::scan_dir;

reptr/src/commands/parse_file.rs

@@ -0,0 +1,16 @@
+use std::{io, path::PathBuf};
+
+use crate::common::try_load;
+
+pub fn parse_file(file_path: PathBuf) -> io::Result<()> {
+    let source = try_load(&file_path)?;
+    match dart_parser::parse(&source) {
+        Ok(ast) => {
+            println!("{ast:#?}");
+        }
+        Err(e) => {
+            println!("Error parsing file at path {file_path:?}\n\n{e}");
+        }
+    }
+    Ok(())
+}

reptr/src/commands/scan_dir.rs

@@ -7,14 +7,14 @@ pub struct Options {
     pub quiet: bool,
 }
 
-pub fn scan_dir(dir: Option<std::path::PathBuf>, options: Options) -> io::Result<()> {
+pub fn scan_dir(dir_path: Option<std::path::PathBuf>, options: Options) -> io::Result<()> {
     let println = move |s: String| {
         if !options.quiet {
             println!("{s}");
         }
     };
 
-    let dir = dir.map_or_else(env::current_dir, Ok)?;
+    let dir = dir_path.map_or_else(env::current_dir, Ok)?;
 
     let read_dir_ext = ReadDirExt::new(
         dir.clone(),

reptr/src/main.rs

@@ -1,5 +1,5 @@
 use clap::Parser;
-use commands::scan_dir;
+use commands::{parse_file, scan_dir};
 use std::io;
 
 mod commands;
@@ -18,7 +18,7 @@ fn main() -> io::Result<()> {
 
     match cmd {
         RunCmd::Scan { dir, quiet } => scan_dir(dir, scan_dir::Options { quiet })?,
-        RunCmd::Parse { file: _ } => todo!(),
+        RunCmd::Parse { file } => parse_file(file)?,
     }
 
     Ok(())