cl-repl: restructure for future improvements. Replaces temporary handrolled argument parser with external dependency argh.
TODO: Rewrite `argh` in Conlang :^P
This commit is contained in:
parent
c71f68eb55
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d7604ba039
@ -10,13 +10,13 @@ publish.workspace = true
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# See more keys and their definitions at https://doc.rust-lang.org/cargo/reference/manifest.html
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[dependencies]
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conlang = { path = "../libconlang" }
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cl-ast = { path = "../cl-ast" }
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cl-lexer = { path = "../cl-lexer" }
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cl-token = { path = "../cl-token" }
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cl-parser = { path = "../cl-parser" }
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cl-interpret = { path = "../cl-interpret" }
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crossterm = "0.27.0"
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argh = "0.1.12"
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[dev-dependencies]
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cl-structures = { path = "../cl-structures" }
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6
cl-repl/src/bin/conlang.rs
Normal file
6
cl-repl/src/bin/conlang.rs
Normal file
@ -0,0 +1,6 @@
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use cl_repl::cli::run;
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use std::error::Error;
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fn main() -> Result<(), Box<dyn Error>> {
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run(argh::from_env())
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}
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@ -5,66 +5,76 @@
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//! - [ ] Raw mode?
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#![warn(clippy::all)]
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pub mod ansi {
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// ANSI color escape sequences
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pub const ANSI_RED: &str = "\x1b[31m";
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// const ANSI_GREEN: &str = "\x1b[32m"; // the color of type checker mode
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pub const ANSI_CYAN: &str = "\x1b[36m";
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pub const ANSI_BRIGHT_GREEN: &str = "\x1b[92m";
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pub const ANSI_BRIGHT_BLUE: &str = "\x1b[94m";
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pub const ANSI_BRIGHT_MAGENTA: &str = "\x1b[95m";
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// const ANSI_BRIGHT_CYAN: &str = "\x1b[96m";
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pub const ANSI_RESET: &str = "\x1b[0m";
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pub const ANSI_OUTPUT: &str = "\x1b[38;5;117m";
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pub const ANSI_CLEAR_LINES: &str = "\x1b[G\x1b[J";
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}
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pub mod args {
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use crate::cli::Mode;
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use std::{
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io::{stdin, IsTerminal},
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ops::Deref,
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path::{Path, PathBuf},
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};
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use argh::FromArgs;
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use std::{path::PathBuf, str::FromStr};
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#[derive(Clone, Debug, PartialEq, Eq, PartialOrd, Ord)]
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/// The Conlang prototype debug interface
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#[derive(Clone, Debug, FromArgs, PartialEq, Eq, PartialOrd, Ord)]
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pub struct Args {
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pub path: Option<PathBuf>, // defaults None
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pub repl: bool, // defaults true if stdin is terminal
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pub mode: Mode, // defaults Interpret
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}
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const HELP: &str = "[( --repl | --no-repl )] [--mode (tokens | pretty | type | run)] [( -f | --file ) <filename>]";
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/// the main source file
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#[argh(positional)]
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pub file: Option<PathBuf>,
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impl Args {
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pub fn new() -> Self {
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Args { path: None, repl: stdin().is_terminal(), mode: Mode::Interpret }
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}
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pub fn parse(mut self) -> Option<Self> {
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let mut args = std::env::args();
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let name = args.next().unwrap_or_default();
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let mut unknown = false;
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while let Some(arg) = args.next() {
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match arg.deref() {
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"--repl" => self.repl = true,
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"--no-repl" => self.repl = false,
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"-f" | "--file" => self.path = args.next().map(PathBuf::from),
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"-m" | "--mode" => {
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self.mode = args.next().unwrap_or_default().parse().unwrap_or_default()
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}
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arg => {
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eprintln!("Unknown argument: {arg}");
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unknown = true;
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}
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}
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/// files to include
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#[argh(option, short = 'I')]
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pub include: Vec<PathBuf>,
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/// the Repl mode to start in
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#[argh(option, short = 'm', default = "Default::default()")]
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pub mode: Mode,
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/// whether to start the repl
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#[argh(switch, short = 'r')]
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pub no_repl: bool,
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}
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/// The CLI's operating mode
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#[derive(Clone, Copy, Debug, Default, PartialEq, Eq, PartialOrd, Ord)]
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pub enum Mode {
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Tokenize,
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Beautify,
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#[default]
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Interpret,
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}
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impl Mode {
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pub fn ansi_color(self) -> &'static str {
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use super::ansi::*;
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match self {
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Mode::Tokenize => ANSI_BRIGHT_BLUE,
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Mode::Beautify => ANSI_BRIGHT_MAGENTA,
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// Mode::Resolve => ANSI_GREEN,
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Mode::Interpret => ANSI_CYAN,
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}
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if unknown {
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println!("Usage: {name} {HELP}");
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None?
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}
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Some(self)
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}
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/// Returns the path to a file, if one was specified
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pub fn path(&self) -> Option<&Path> {
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self.path.as_deref()
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}
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/// Returns whether to start a REPL session or not
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pub fn repl(&self) -> bool {
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self.repl
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}
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/// Returns the repl Mode
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pub fn mode(&self) -> Mode {
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self.mode
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}
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}
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impl Default for Args {
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fn default() -> Self {
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Self::new()
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impl FromStr for Mode {
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type Err = &'static str;
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fn from_str(s: &str) -> Result<Self, &'static str> {
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Ok(match s {
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"i" | "interpret" | "r" | "run" => Mode::Interpret,
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"b" | "beautify" | "p" | "pretty" => Mode::Beautify,
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// "r" | "resolve" | "typecheck" | "type" => Mode::Resolve,
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"t" | "tokenize" | "token" => Mode::Tokenize,
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_ => Err("Recognized modes are: 'r' \"run\", 'p' \"pretty\", 't' \"token\"")?,
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})
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}
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}
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}
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@ -77,7 +87,7 @@ pub mod program {
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use cl_ast::{self as ast, ast_impl::format::Pretty};
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use cl_lexer::Lexer;
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use cl_parser::{error::PResult, Parser};
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use conlang::resolver::{error::TyResult, Resolver};
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// use conlang::resolver::{error::TyResult, Resolver};
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use std::{fmt::Display, io::Write};
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pub struct Parsable;
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@ -134,10 +144,6 @@ pub mod program {
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// println!("{self}")
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}
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pub fn resolve(&mut self, resolver: &mut Resolver) -> TyResult<()> {
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todo!("Program::resolve(\n{self},\n{resolver:?}\n)")
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}
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pub fn run(&self, env: &mut Environment) -> IResult<ConValue> {
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match &self.data {
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Parsed::File(v) => v.interpret(env),
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@ -153,18 +159,6 @@ pub mod program {
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// }
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// .map(|ty| println!("{ty}"))
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// }
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// /// Runs the [Program] in the specified [Environment]
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// pub fn run(&self, env: &mut Environment) -> IResult<()> {
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// println!(
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// "{}",
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// match &self.data {
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// Parsed::Program(start) => env.eval(start)?,
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// Parsed::Expr(expr) => env.eval(expr)?,
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// }
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// );
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// Ok(())
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// }
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}
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impl<'t> Display for Program<'t, Parsed> {
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@ -176,173 +170,102 @@ pub mod program {
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}
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}
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}
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// impl PrettyPrintable for Program<Parsed> {
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// fn visit<W: Write>(&self, p: &mut Printer<W>) -> IOResult<()> {
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// match &self.data {
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// Parsed::Program(value) => value.visit(p),
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// Parsed::Expr(value) => value.visit(p),
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// }
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// }
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// }
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}
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pub mod cli {
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//! Implement's the command line interface
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use crate::{
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args::Args,
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program::{Parsable, Parsed, Program},
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};
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use cl_interpret::env::Environment;
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use cl_token::Token;
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use conlang::resolver::Resolver;
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use std::{
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convert::Infallible,
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error::Error,
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path::{Path, PathBuf},
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str::FromStr,
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args::{Args, Mode},
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program::{Parsable, Program},
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repl::Repl,
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tools::print_token,
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};
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use cl_interpret::{env::Environment, temp_type_impl::ConValue};
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use cl_lexer::Lexer;
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use cl_parser::Parser;
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use std::{error::Error, path::Path};
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// ANSI color escape sequences
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const ANSI_RED: &str = "\x1b[31m";
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const ANSI_GREEN: &str = "\x1b[32m";
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const ANSI_CYAN: &str = "\x1b[36m";
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const ANSI_BRIGHT_BLUE: &str = "\x1b[94m";
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const ANSI_BRIGHT_MAGENTA: &str = "\x1b[95m";
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// const ANSI_BRIGHT_CYAN: &str = "\x1b[96m";
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const ANSI_RESET: &str = "\x1b[0m";
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const ANSI_OUTPUT: &str = "\x1b[38;5;117m";
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/// Run the command line interface
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pub fn run(args: Args) -> Result<(), Box<dyn Error>> {
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let Args { file, include, mode, no_repl } = args;
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const ANSI_CLEAR_LINES: &str = "\x1b[G\x1b[J";
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#[derive(Clone, Debug)]
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pub enum CLI {
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Repl(Repl),
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File { mode: Mode, path: PathBuf },
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Stdin { mode: Mode },
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}
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impl From<Args> for CLI {
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fn from(value: Args) -> Self {
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let Args { path, repl, mode } = value;
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match (repl, path) {
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(true, Some(path)) => {
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let prog = std::fs::read_to_string(path).unwrap();
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let code = cl_parser::Parser::new(cl_lexer::Lexer::new(&prog))
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.file()
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.unwrap();
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let mut env = cl_interpret::env::Environment::new();
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env.eval(&code).unwrap();
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env.call("dump", &[])
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.expect("calling dump in the environment shouldn't fail");
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Self::Repl(Repl { mode, env, ..Default::default() })
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}
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(_, Some(path)) => Self::File { mode, path },
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(true, None) => Self::Repl(Repl { mode, ..Default::default() }),
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(false, None) => Self::Stdin { mode },
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}
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let mut env = Environment::new();
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for path in include {
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load_file(&mut env, path)?;
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}
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}
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impl CLI {
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pub fn run(&mut self) -> Result<(), Box<dyn Error>> {
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use std::{fs, io};
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match self {
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CLI::Repl(repl) => repl.repl(),
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CLI::File { mode, ref path } => {
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// read file
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Self::no_repl(*mode, Some(path), &fs::read_to_string(path)?)
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}
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CLI::Stdin { mode } => {
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Self::no_repl(*mode, None, &io::read_to_string(io::stdin())?)
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}
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}
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Ok(())
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}
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fn no_repl(mode: Mode, path: Option<&Path>, code: &str) {
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let program = Program::new(code);
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if no_repl {
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let code = match &file {
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Some(file) => std::fs::read_to_string(file)?,
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None => std::io::read_to_string(std::io::stdin())?,
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};
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let code = Program::new(&code);
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match mode {
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Mode::Tokenize => {
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for token in program.lex() {
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if let Some(path) = path {
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print!("{}:", path.display());
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}
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match token {
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Ok(token) => print_token(&token),
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Err(e) => println!("{e}"),
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}
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}
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}
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Mode::Beautify => Self::beautify(program),
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Mode::Resolve => Self::resolve(program, Default::default()),
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Mode::Interpret => Self::interpret(program, Environment::new()),
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}
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}
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fn beautify(program: Program<Parsable>) {
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match program.parse() {
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Ok(program) => program.print(),
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Err(e) => eprintln!("{e}"),
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};
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}
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fn resolve(program: Program<Parsable>, mut resolver: Resolver) {
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let mut program = match program.parse() {
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Ok(program) => program,
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Err(e) => {
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eprintln!("{e}");
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return;
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}
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};
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if let Err(e) = program.resolve(&mut resolver) {
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eprintln!("{e}");
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}
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}
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fn interpret(program: Program<Parsable>, mut interpreter: Environment) {
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let program = match program.parse() {
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Ok(program) => program,
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Err(e) => {
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eprintln!("{e}");
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return;
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}
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};
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if let Err(e) = program.run(&mut interpreter) {
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eprintln!("{e}");
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return;
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}
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if let Err(e) = interpreter.call("main", &[]) {
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eprintln!("{e}");
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Mode::Tokenize => tokenize(code, file),
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Mode::Beautify => beautify(code),
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Mode::Interpret => interpret(code, &mut env),
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}?;
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} else {
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if let Some(file) = file {
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load_file(&mut env, file)?;
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}
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Repl::with_env(mode, env).repl()
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}
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Ok(())
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}
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/// The CLI's operating mode
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#[derive(Clone, Copy, Debug, Default, PartialEq, Eq, PartialOrd, Ord)]
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pub enum Mode {
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Tokenize,
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Beautify,
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Resolve,
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#[default]
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Interpret,
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fn load_file(
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env: &mut Environment,
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path: impl AsRef<Path>,
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) -> Result<ConValue, Box<dyn Error>> {
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let file = std::fs::read_to_string(path)?;
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let code = Parser::new(Lexer::new(&file)).file()?;
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env.eval(&code).map_err(Into::into)
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}
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impl Mode {
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pub fn ansi_color(self) -> &'static str {
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match self {
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Mode::Tokenize => ANSI_BRIGHT_BLUE,
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Mode::Beautify => ANSI_BRIGHT_MAGENTA,
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Mode::Resolve => ANSI_GREEN,
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Mode::Interpret => ANSI_CYAN,
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fn tokenize(
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code: Program<Parsable>,
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path: Option<impl AsRef<Path>>,
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) -> Result<(), Box<dyn Error>> {
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for token in code.lex() {
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if let Some(ref path) = path {
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print!("{}:", path.as_ref().display());
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}
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match token {
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Ok(token) => print_token(&token),
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Err(e) => println!("{e}"),
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}
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}
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Ok(())
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}
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impl FromStr for Mode {
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type Err = Infallible;
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fn from_str(s: &str) -> Result<Self, Infallible> {
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Ok(match s {
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"i" | "interpret" | "run" => Mode::Interpret,
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"b" | "beautify" | "p" | "pretty" => Mode::Beautify,
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"r" | "resolve" | "typecheck" | "type" => Mode::Resolve,
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"t" | "tokenize" | "tokens" => Mode::Tokenize,
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_ => Mode::Interpret,
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})
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fn beautify(code: Program<Parsable>) -> Result<(), Box<dyn Error>> {
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code.parse()?.print();
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Ok(())
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}
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fn interpret(code: Program<Parsable>, env: &mut Environment) -> Result<(), Box<dyn Error>> {
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match code.parse()?.run(env)? {
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ConValue::Empty => {}
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ret => println!("{ret}"),
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}
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if env.get("main").is_ok() {
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println!("-> {}", env.call("main", &[])?);
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}
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Ok(())
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}
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}
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pub mod repl {
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use crate::{
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ansi::*,
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args::Mode,
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program::{Parsable, Parsed, Program},
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tools::print_token,
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};
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use cl_interpret::{env::Environment, temp_type_impl::ConValue};
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use std::fmt::Display;
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/// Implements the interactive interpreter
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#[derive(Clone, Debug)]
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@ -350,8 +273,8 @@ pub mod cli {
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prompt_again: &'static str, // " ?>"
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prompt_begin: &'static str, // "cl>"
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prompt_error: &'static str, // "! >"
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prompt_succs: &'static str, // " ->"
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env: Environment,
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resolver: Resolver,
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mode: Mode,
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}
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@ -361,8 +284,8 @@ pub mod cli {
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prompt_begin: "cl>",
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prompt_again: " ?>",
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prompt_error: "! >",
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prompt_succs: " =>",
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env: Default::default(),
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resolver: Default::default(),
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mode: Default::default(),
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}
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}
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@ -370,9 +293,19 @@ pub mod cli {
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/// Prompt functions
|
||||
impl Repl {
|
||||
pub fn prompt_error(&self, err: &impl Error) {
|
||||
pub fn prompt_result<T: Display, E: Display>(&self, res: Result<T, E>) {
|
||||
match &res {
|
||||
Ok(v) => self.prompt_succs(v),
|
||||
Err(e) => self.prompt_error(e),
|
||||
}
|
||||
}
|
||||
pub fn prompt_error(&self, err: &impl Display) {
|
||||
let Self { prompt_error: prompt, .. } = self;
|
||||
println!("{ANSI_CLEAR_LINES}{ANSI_RED}{prompt} {err}{ANSI_RESET}",)
|
||||
println!("{ANSI_CLEAR_LINES}{ANSI_RED}{prompt} {err}{ANSI_RESET}")
|
||||
}
|
||||
pub fn prompt_succs(&self, value: &impl Display) {
|
||||
let Self { prompt_succs: prompt, .. } = self;
|
||||
println!("{ANSI_BRIGHT_GREEN}{prompt}{ANSI_RESET} {value}")
|
||||
}
|
||||
/// Resets the cursor to the start of the line, clears the terminal,
|
||||
/// and sets the output color
|
||||
@ -387,6 +320,10 @@ pub mod cli {
|
||||
pub fn new(mode: Mode) -> Self {
|
||||
Self { mode, ..Default::default() }
|
||||
}
|
||||
/// Constructs a new [Repl] with the provided [Mode] and [Environment]
|
||||
pub fn with_env(mode: Mode, env: Environment) -> Self {
|
||||
Self { mode, env, ..Default::default() }
|
||||
}
|
||||
/// Runs the main REPL loop
|
||||
pub fn repl(&mut self) {
|
||||
use crate::repline::{error::Error, Repline};
|
||||
@ -455,23 +392,26 @@ pub mod cli {
|
||||
);
|
||||
}
|
||||
fn command(&mut self, line: &str) -> bool {
|
||||
match line.trim() {
|
||||
"$pretty" => self.mode = Mode::Beautify,
|
||||
"$tokens" => self.mode = Mode::Tokenize,
|
||||
"$type" => self.mode = Mode::Resolve,
|
||||
"$run" => self.mode = Mode::Interpret,
|
||||
"$mode" => println!("{:?} Mode", self.mode),
|
||||
"$help" => self.help(),
|
||||
_ => return false,
|
||||
let Some(line) = line.trim().strip_prefix('$') else {
|
||||
return false;
|
||||
};
|
||||
if let Ok(mode) = line.parse() {
|
||||
self.mode = mode;
|
||||
} else {
|
||||
match line {
|
||||
"$run" => self.mode = Mode::Interpret,
|
||||
"mode" => println!("{:?} Mode", self.mode),
|
||||
"help" => self.help(),
|
||||
_ => return false,
|
||||
}
|
||||
}
|
||||
true
|
||||
}
|
||||
/// Dispatches calls to repl functions based on the program
|
||||
fn dispatch(&mut self, code: &mut Program<Parsed>) {
|
||||
match self.mode {
|
||||
Mode::Tokenize => (),
|
||||
Mode::Tokenize => {}
|
||||
Mode::Beautify => self.beautify(code),
|
||||
Mode::Resolve => self.typecheck(code),
|
||||
Mode::Interpret => self.interpret(code),
|
||||
}
|
||||
}
|
||||
@ -484,21 +424,20 @@ pub mod cli {
|
||||
}
|
||||
}
|
||||
fn interpret(&mut self, code: &Program<Parsed>) {
|
||||
if let Err(e) = code.run(&mut self.env) {
|
||||
self.prompt_error(&e)
|
||||
}
|
||||
}
|
||||
fn typecheck(&mut self, code: &mut Program<Parsed>) {
|
||||
if let Err(e) = code.resolve(&mut self.resolver) {
|
||||
self.prompt_error(&e)
|
||||
match code.run(&mut self.env) {
|
||||
Ok(ConValue::Empty) => {}
|
||||
res => self.prompt_result(res),
|
||||
}
|
||||
}
|
||||
fn beautify(&mut self, code: &Program<Parsed>) {
|
||||
code.print()
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
fn print_token(t: &Token) {
|
||||
pub mod tools {
|
||||
use cl_token::Token;
|
||||
pub fn print_token(t: &Token) {
|
||||
println!(
|
||||
"{:02}:{:02}: {:#19} │{}│",
|
||||
t.line(),
|
||||
|
||||
@ -1,6 +0,0 @@
|
||||
use cl_repl::{args::Args, cli::CLI};
|
||||
use std::error::Error;
|
||||
|
||||
fn main() -> Result<(), Box<dyn Error>> {
|
||||
CLI::from(Args::new().parse().unwrap_or_default()).run()
|
||||
}
|
||||
Loading…
Reference in New Issue
Block a user