celestial_hub_compass/cli/
emit.rs

1use clap::Args;
2
3use crate::{ast::Statement, lexer::Lexer, parser::Parser};
4
5#[derive(Args)]
6pub struct EmitASTOptions {
7  /// The ETAC file to parse
8  #[arg(short = 'f')]
9  pub filepath: String,
10
11  /// Turn debugging information on
12  #[arg(short, long, action = clap::ArgAction::Count)]
13  debug: u8,
14}
15
16pub fn ast(
17  EmitASTOptions { filepath, debug }: &EmitASTOptions,
18) -> Result<Vec<Statement>, Box<dyn std::error::Error>> {
19  let source_code = std::fs::read_to_string(filepath)?;
20  let lexer = Lexer::new(&source_code[..], filepath).map_err(|e| e.to_string())?;
21
22  if *debug > 0 {
23    println!("{}", lexer);
24  }
25
26  let ast = Parser::new().parse(lexer)?;
27
28  if *debug > 0 {
29    println!("{:#?}", ast);
30  }
31
32  Ok(ast)
33}

celestial_hub_compass/cli/emit.rs

celestial_hub_compass/cli/
emit.rs