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https://forge.katzen.cafe/katzen-cafe/iowo.git
synced 2024-11-05 15:26:24 +01:00
lang: start working on parser that parses to events
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@ -3,7 +3,10 @@ use std::{fs, path::PathBuf};
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use clap::Parser;
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use lang::{
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err_reporting::ErrorCollector,
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parser::ast::lossless::{lex, parser},
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parser::ast::lossless::{
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lex,
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parser::{self, parser_to_events::to_events},
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},
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};
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#[derive(Parser)]
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@ -17,8 +20,11 @@ fn main() {
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let n = args.file.clone();
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let f = fs::read_to_string(n.clone()).expect("failed to read file");
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println!("toks: {:?}", lex::lex(&f));
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let parse_res = parser::parse(&f);
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println!("parse: {:?}", parse_res);
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println!("evs: {:?}", to_events(&f));
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// let parse_res = parser::parse(&f);
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// println!("parse: {:?}", parse_res);
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// dbg!(lex::lex(&f));
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// let mut err_collector = ErrorCollector::new(vec![(n.to_str().unwrap(), &f)]);
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@ -11,20 +11,37 @@ use crate::parser::{
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use super::lex::{self, SyntaxKind};
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mod parsers {
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use rowan::GreenNode;
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pub mod parser_to_events {
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use chumsky::Parser;
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use crate::parser::ast::lossless::lex::SyntaxKind;
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use crate::parser::ast::lossless::lex::SyntaxKind::{self, *};
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use super::SyntaxError;
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struct ParseResult {
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green_node: GreenNode,
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errors: Vec<SyntaxError>,
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#[derive(Debug, PartialEq, Eq)]
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pub(super) enum Event {
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StartNode,
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StartErr(SyntaxError),
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EatToken,
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FinishNode,
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FinishErr,
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}
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trait Parser {
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fn parse<'src>(input: &[(SyntaxKind, &'src str)]) -> ParseResult;
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#[derive(Debug, PartialEq, Eq)]
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enum SyntaxError {
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Expected(SyntaxKind),
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AttrExpectedValue,
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/// guessed if there's a newline and attr on next line without comma
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/// should then suggest comma after attr
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ExpectedCommaBetweenAttrs,
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}
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pub fn to_events(src: &str) -> Vec<Event> {
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let mut tokens = lex::lex(src);
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parser().parse(tokens)
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}
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pub fn parser() -> impl Parser<'static, SyntaxKind, Vec<Event>> {
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let whitespace = just(WHITESPACE).or(NEWLINE).repeated().collect::<Vec<_>>();
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whitespace
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}
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}
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