95 lines
2.7 KiB
Rust
95 lines
2.7 KiB
Rust
use std::fs::{self, File};
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use std::io::Write;
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use std::path::PathBuf;
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use std::process::ExitCode;
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use anyhow::Result;
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use clap::Parser;
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use codespan_reporting::diagnostic::{Diagnostic, Label};
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use codespan_reporting::files::SimpleFiles;
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use codespan_reporting::term::termcolor::{ColorChoice, StandardStream};
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use codespan_reporting::term::{self, Config as CodespanConfig};
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use e0::ast::typeck_bidi::TypeChecker;
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use e0::codegen::llvm_ir::LlvmIrCodegen;
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use e0::codegen::CodegenBackend;
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use e0::parser::ProgramParser;
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use lalrpop_util::ParseError;
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#[derive(Debug, Parser)]
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struct Opt {
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path: PathBuf,
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/// Path to output the bitcode to.
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#[clap(short = 'o', long = "out", name = "bitcode-out")]
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out_path: PathBuf,
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/// Path to output the AST to, if at all.
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#[clap(long = "emit-ast", name = "ast-out")]
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emit_ast: Option<PathBuf>,
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}
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fn main() -> Result<ExitCode> {
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let opts = Opt::parse();
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// Set up reporting
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let mut files = SimpleFiles::new();
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let writer = StandardStream::stderr(ColorChoice::Always);
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let config = CodespanConfig::default();
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let contents = fs::read_to_string(&opts.path)?;
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let file_id = files.add(opts.path.display().to_string(), &contents);
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let parser = ProgramParser::new();
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let ast = match parser.parse(&contents) {
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Ok(v) => v,
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Err(err) => {
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let loc = match err {
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ParseError::InvalidToken { location }
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| ParseError::UnrecognizedEOF { location, .. } => (location, location),
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ParseError::UnrecognizedToken { ref token, .. }
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| ParseError::ExtraToken { ref token } => (token.0, token.2),
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_ => todo!(),
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};
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let diagnostic = Diagnostic::error()
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.with_labels(vec![Label::primary(file_id, loc.0..loc.1)])
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.with_message(err.to_string());
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term::emit(&mut writer.lock(), &config, &files, &diagnostic)?;
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return Ok(ExitCode::FAILURE);
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}
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};
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let type_checker = TypeChecker::default();
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let typed_ast = match type_checker.convert(ast) {
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Ok(v) => v,
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Err(err) => {
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let diagnostic = Diagnostic::error().with_message(err.to_string());
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term::emit(&mut writer.lock(), &config, &files, &diagnostic)?;
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return Ok(ExitCode::FAILURE);
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}
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};
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if let Some(path) = opts.emit_ast {
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let mut file = File::create(&path)?;
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file.write(format!("{:#?}", typed_ast).as_bytes())?;
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}
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{
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let file = File::create(&opts.out_path)?;
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let mut codegen = LlvmIrCodegen::new(file);
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codegen.convert(typed_ast)?;
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}
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// let ctx = ast::cranelift::convert(
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// opts.path.display().to_string(),
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// typed_ast,
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// )?;
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// {
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// let file = File::create(&opts.out_path)?;
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// ctx.compile_and_emit();
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// println!("Emitted.");
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// }
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Ok(ExitCode::SUCCESS)
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}
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