schala/schala-repl/src/lib.rs

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#![feature(link_args)]
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#![feature(slice_patterns, box_patterns, box_syntax, proc_macro_hygiene, decl_macro)]
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#![feature(plugin)]
extern crate getopts;
extern crate linefeed;
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extern crate itertools;
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extern crate colored;
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#[macro_use]
extern crate serde_derive;
extern crate serde_json;
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#[macro_use]
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extern crate rocket;
extern crate rocket_contrib;
extern crate includedir;
extern crate phf;
use std::path::Path;
use std::fs::File;
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use std::io::Read;
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use std::process::exit;
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mod repl;
mod language;
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mod webapp;
pub use language::{ProgrammingLanguageInterface, ComputationRequest, ComputationResponse, LangMetaRequest, LangMetaResponse, GlobalOutputStats};
include!(concat!(env!("OUT_DIR"), "/static.rs"));
const VERSION_STRING: &'static str = "0.1.0";
pub fn start_repl(langs: Vec<Box<dyn ProgrammingLanguageInterface>>) {
let options = command_line_options().parse(std::env::args()).unwrap_or_else(|e| {
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println!("{:?}", e);
exit(1);
});
if options.opt_present("help") {
println!("{}", command_line_options().usage("Schala metainterpreter"));
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exit(0);
}
match options.free[..] {
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[] | [_] => {
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let mut repl = repl::Repl::new(langs);
repl.run_repl();
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}
[_, ref filename, _..] => {
run_noninteractive(filename, langs);
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}
};
}
fn run_noninteractive(filename: &str, languages: Vec<Box<ProgrammingLanguageInterface>>) {
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let path = Path::new(filename);
let ext = path.extension().and_then(|e| e.to_str()).unwrap_or_else(|| {
println!("Source file lacks extension");
exit(1);
});
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let language = Box::new(languages.into_iter().find(|lang| lang.get_source_file_suffix() == ext)
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.unwrap_or_else(|| {
println!("Extension .{} not recognized", ext);
exit(1);
}));
let mut source_file = File::open(path).unwrap();
let mut buffer = String::new();
source_file.read_to_string(&mut buffer).unwrap();
println!("NON-INTERACTIVE OUTPUT DOESN'T WORK YET");
panic!();
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}
fn command_line_options() -> getopts::Options {
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let mut options = getopts::Options::new();
options.optflag("h",
"help",
"Show help text");
options.optflag("w",
"webapp",
"Start up web interpreter");
options
}