mirror of
https://github.com/TxtDot/dalet-rs.git
synced 2024-11-05 17:33:58 +03:00
refactor(lexer): make functions for specific tokens
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commit
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4 changed files with 136 additions and 106 deletions
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@ -1,12 +1,12 @@
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use ariadne::{Color, Label, Report, ReportKind, Source};
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use chumsky::Parser;
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use dalet::daleth::{format::format, lexer::lexer};
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use dalet::daleth::{format::format, lexer::full_lexer};
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fn main() {
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let src_file = "daleth.dlth";
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let src = include_str!("./daleth.dlth");
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let parsed = lexer().parse(src);
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let parsed = full_lexer().parse(src);
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match parsed.into_result() {
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Ok(t) => {
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@ -4,7 +4,36 @@ pub mod types;
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pub fn lexer<'src>(
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) -> impl Parser<'src, &'src str, Vec<Spanned<Token<'src>>>, extra::Err<Rich<'src, char, Span>>> {
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let tag = choice((
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let token = choice((symbol(), tag(), argument(), textual()));
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token
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.padded()
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.padded_by(comment())
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.map_with(|t, e| (t, e.span()))
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.repeated()
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.collect()
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}
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pub fn full_lexer<'src>(
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) -> impl Parser<'src, &'src str, Vec<Spanned<Token<'src>>>, extra::Err<Rich<'src, char, Span>>> {
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let token = choice((
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empty_line(),
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comment(),
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symbol(),
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tag(),
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argument(),
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textual(),
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));
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token
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.padded_by(text::whitespace().and_is(empty_line().not()).or_not())
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.map_with(|t, e| (t, e.span()))
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.repeated()
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.collect()
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}
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fn tag<'src>() -> impl Parser<'src, &'src str, Token<'src>, extra::Err<Rich<'src, char, Span>>> {
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choice((
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just("el").to(Token::El),
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just("h").to(Token::H),
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just("p").to(Token::P),
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@ -39,108 +68,109 @@ pub fn lexer<'src>(
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just("pre").to(Token::Pre),
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just("meta").to(Token::Meta),
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)))
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.labelled("Tag");
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.labelled("Tag")
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}
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let symbol = choice((
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fn symbol<'src>() -> impl Parser<'src, &'src str, Token<'src>, extra::Err<Rich<'src, char, Span>>> {
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choice((
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just("[[").to(Token::ElOpen).labelled("[["),
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just("]]").to(Token::ElClose).labelled("]]"),
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just("[").to(Token::LSquare).labelled("["),
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just("]").to(Token::RSquare).labelled("]"),
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));
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let argument = {
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let arg_escape = just('\\')
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.ignore_then(just('"'))
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.labelled("Escape sequence for argument");
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let number = text::int(10)
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.from_str()
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.unwrapped()
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.map(Token::NumberArgument)
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.labelled("Number argument");
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let text_argument = none_of("\"\n\\")
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.or(arg_escape)
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.repeated()
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.to_slice()
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.delimited_by(just('"'), just('"'))
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.map(Token::TextArgument)
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.labelled("Text argument");
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choice((number, text_argument))
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};
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let textual = {
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let escape = just('\\')
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.ignore_then(just('}'))
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.labelled("Multi-line escape sequence");
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let text = none_of("\n")
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.repeated()
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.to_slice()
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.padded_by(text::inline_whitespace());
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let text_body = just(':')
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.ignore_then(text)
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.map(Token::TextBody)
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.labelled("One line text body");
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let text_tag = text
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.then_ignore(just('\n'))
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.map(Token::TextTag)
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.labelled("Text tag");
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let multiline_text_body = none_of("}\\")
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.or(escape)
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.repeated()
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.to_slice()
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.labelled("Body of multiline text");
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let paragraph = multiline_text_body
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.clone()
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.delimited_by(just("{-"), just("}"))
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.map(Token::Paragraph)
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.labelled("Paragraph syntax");
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let mltext = multiline_text_body
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.clone()
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.delimited_by(just('{'), just('}'))
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.map(Token::MLText)
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.labelled("Multiline text");
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let mlmstext = {
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let mlms_n = just("{~")
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.ignore_then(text::int(10).from_str().unwrapped())
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.labelled("Minimum spaces number");
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mlms_n
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.then(multiline_text_body.clone())
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.then_ignore(just("}"))
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.map(|(n, t)| Token::MLMSText(n, t))
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.labelled("Multi line text with min spaces")
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};
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let rmltext = multiline_text_body
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.delimited_by(just("{#"), just('}'))
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.map(Token::RMLText)
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.labelled("Raw multiline text");
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choice((paragraph, mlmstext, rmltext, mltext, text_body, text_tag))
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};
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let comment = just('#')
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.ignore_then(none_of("\n").repeated().to_slice())
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.map(Token::Comment);
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let empty_line = text::inline_whitespace()
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.delimited_by(text::newline(), text::newline())
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.to(Token::EmptyLine);
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let token = choice((empty_line.clone(), comment, symbol, tag, argument, textual));
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token
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.padded_by(text::whitespace().and_is(empty_line.not()).or_not())
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.map_with(|t, e| (t, e.span()))
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.repeated()
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.collect()
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))
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}
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fn argument<'src>() -> impl Parser<'src, &'src str, Token<'src>, extra::Err<Rich<'src, char, Span>>>
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{
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let arg_escape = just('\\')
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.ignore_then(just('"'))
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.labelled("Escape sequence for argument");
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let number = text::int(10)
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.from_str()
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.unwrapped()
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.map(Token::NumberArgument)
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.labelled("Number argument");
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let text_argument = none_of("\"\n\\")
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.or(arg_escape)
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.repeated()
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.to_slice()
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.delimited_by(just('"'), just('"'))
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.map(Token::TextArgument)
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.labelled("Text argument");
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choice((number, text_argument))
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}
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fn textual<'src>() -> impl Parser<'src, &'src str, Token<'src>, extra::Err<Rich<'src, char, Span>>>
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{
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let escape = just('\\')
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.ignore_then(just('}'))
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.labelled("Multi-line escape sequence");
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let text = none_of("\n")
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.repeated()
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.to_slice()
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.padded_by(text::inline_whitespace());
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let text_body = just(':')
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.ignore_then(text)
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.map(Token::TextBody)
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.labelled("One line text body");
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let text_tag = text
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.then_ignore(just('\n'))
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.map(Token::TextTag)
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.labelled("Text tag");
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let multiline_text_body = none_of("}\\")
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.or(escape)
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.repeated()
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.to_slice()
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.labelled("Body of multiline text");
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let paragraph = multiline_text_body
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.clone()
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.delimited_by(just("{-"), just("}"))
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.map(Token::Paragraph)
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.labelled("Paragraph syntax");
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let mltext = multiline_text_body
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.clone()
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.delimited_by(just('{'), just('}'))
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.map(Token::MLText)
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.labelled("Multiline text");
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let mlmstext = {
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let mlms_n = just("{~")
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.ignore_then(text::int(10).from_str().unwrapped())
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.labelled("Minimum spaces number");
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mlms_n
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.then(multiline_text_body.clone())
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.then_ignore(just("}"))
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.map(|(n, t)| Token::MLMSText(n, t))
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.labelled("Multi line text with min spaces")
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};
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let rmltext = multiline_text_body
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.delimited_by(just("{#"), just('}'))
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.map(Token::RMLText)
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.labelled("Raw multiline text");
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choice((paragraph, mlmstext, rmltext, mltext, text_body, text_tag))
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}
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fn comment<'src>() -> impl Parser<'src, &'src str, Token<'src>, extra::Err<Rich<'src, char, Span>>>
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{
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just('#')
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.ignore_then(none_of("\n").repeated().to_slice())
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.map(Token::Comment)
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}
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fn empty_line<'src>(
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) -> impl Parser<'src, &'src str, Token<'src>, extra::Err<Rich<'src, char, Span>>> {
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text::inline_whitespace()
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.delimited_by(text::newline(), text::newline())
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.to(Token::EmptyLine)
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}
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@ -28,11 +28,11 @@ pub enum Token<'src> {
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/// Raw Multi line text
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RMLText(&'src str),
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/// Special
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// Special
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TextTag(&'src str),
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Paragraph(&'src str),
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/// Special removed before parse
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// Special for formatting, ignored for parse
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Comment(&'src str),
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EmptyLine,
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@ -4,7 +4,7 @@ use ariadne::{Color, Label, Report, ReportKind, Source};
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use chumsky::Parser;
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use clap::Parser as ClapParser;
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use commands::{Cli, Commands::*};
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use dalet::daleth::{format::format, lexer::lexer};
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use dalet::daleth::{format::format, lexer::full_lexer};
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use std::fs;
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fn main() {
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@ -16,7 +16,7 @@ fn main() {
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let src_file = &path.to_string_lossy().to_string();
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let src = fs::read_to_string(src_file).unwrap();
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let parsed = lexer().parse(&src);
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let parsed = full_lexer().parse(&src);
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match parsed.into_result() {
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Ok(t) => {
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