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Add basic CLI

github-actions
Garrit Franke 2 years ago
parent
commit
d13d46ec99
  1. 217
      Cargo.lock
  2. 1
      Cargo.toml
  3. 25
      src/main.rs

217
Cargo.lock generated

@ -1,6 +1,223 @@
# This file is automatically @generated by Cargo.
# It is not intended for manual editing.
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1
Cargo.toml

@ -7,3 +7,4 @@ edition = "2018"
# See more keys and their definitions at https://doc.rust-lang.org/cargo/reference/manifest.html
[dependencies]
structopt = "0.3.21"

25
src/main.rs

@ -1,15 +1,36 @@
extern crate structopt;
use crate::generator::Generator;
use crate::Opt::Build;
use std::fs::File;
use std::io::Read;
use std::io::Write;
use std::path::PathBuf;
use structopt::StructOpt;
mod generator;
mod lexer;
mod parser;
mod util;
#[derive(StructOpt, Debug)]
enum Opt {
#[structopt()]
Build {
#[structopt(default_value = "./examples/playground.sb")]
in_file: PathBuf,
#[structopt(short, long, default_value = "./examples_out/playground.js")]
out_file: PathBuf,
},
}
fn main() -> Result<(), String> {
let mut file = File::open("examples/playground.sb").expect("Could not open file");
let opts = Opt::from_args();
let (in_file, out_file) = match opts {
Build { in_file, out_file } => (in_file, out_file),
};
let mut file = File::open(in_file).expect("Could not open file");
let mut contents = String::new();
file.read_to_string(&mut contents)
.expect("Could not read file");
@ -22,7 +43,7 @@ fn main() -> Result<(), String> {
dbg!(":#?", &program);
let output = generator::js::JsGenerator::generate(program);
let mut file = std::fs::File::create("examples_out/out.js").expect("create failed");
let mut file = std::fs::File::create(out_file).expect("create failed");
file.write_all(output.as_bytes()).expect("write failed");
file.flush().expect("Could not flush file");
Ok(())

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