use std::path::PathBuf; use swc_common::{ comments::SingleThreadedComments, errors::{DiagnosticBuilder, Handler}, input::SourceFileInput, BytePos, Span, }; use swc_ecma_ast::*; use swc_ecma_parser::{lexer::Lexer, EsConfig, Parser, Syntax, TsConfig}; use swc_ecma_visit::{Visit, VisitWith}; use testing::{fixture, Tester}; #[fixture("tests/comments/**/input.js")] fn test(input: PathBuf) { let ext = input.extension().unwrap(); let ext = ext.to_string_lossy(); let output_file = PathBuf::from(format!("{}.swc-stderr", input.display())); let output = Tester::new() .print_errors(|cm, handler| -> Result<(), _> { // let fm = cm.load_file(&input).unwrap(); let syntax = match &*ext { "js" => Syntax::Es(EsConfig { jsx: false, fn_bind: false, decorators: true, decorators_before_export: false, export_default_from: true, import_attributes: true, ..Default::default() }), "ts" | "tsx" => Syntax::Typescript(TsConfig { tsx: ext == "tsx", decorators: true, no_early_errors: true, ..Default::default() }), _ => { unreachable!() } }; let comments = SingleThreadedComments::default(); let lexer = Lexer::new( syntax, EsVersion::latest(), SourceFileInput::from(&*fm), Some(&comments), ); let mut parser = Parser::new_from(lexer); let module = parser.parse_module(); let module = match module { Ok(v) => v, Err(err) => { panic!("{:?}", err) } }; module.visit_with(&mut CommentPrinter { handler: &handler, comments, }); Err(()) }) .unwrap_err(); if output.trim().is_empty() { panic!("Comments have incorrect position") } output.compare_to_file(output_file).unwrap(); } struct CommentPrinter<'a> { handler: &'a Handler, comments: SingleThreadedComments, } impl Visit for CommentPrinter<'_> { fn visit_span(&mut self, n: &Span) { self.comments.with_leading(n.lo, |comments| { for c in comments { DiagnosticBuilder::new( self.handler, swc_common::errors::Level::Note, "Leading (lo)", ) .span_note(Span::new(n.lo, n.lo, Default::default()), &c.text) .emit(); } }); self.comments.with_trailing(n.lo, |comments| { for c in comments { DiagnosticBuilder::new( self.handler, swc_common::errors::Level::Note, "Trailing (lo)", ) .span_note(Span::new(n.lo, n.lo, Default::default()), &c.text) .emit(); } }); self.comments.with_leading(n.hi - BytePos(1), |comments| { for c in comments { DiagnosticBuilder::new( self.handler, swc_common::errors::Level::Note, "Leading (hi)", ) .span_note( Span::new(n.hi - BytePos(1), n.hi - BytePos(1), Default::default()), &c.text, ) .emit(); } }); self.comments.with_trailing(n.hi, |comments| { for c in comments { DiagnosticBuilder::new( self.handler, swc_common::errors::Level::Note, "Trailing (hi)", ) .span_note(Span::new(n.hi, n.hi, Default::default()), &c.text) .emit(); } }); } }