retoor/orchid
1
0
Fork 0
forked from Orchid/orchid
Code Pull Requests 1 Activity

Added directfs

Browse Source 
Added a very rudimentary file I/O system suitable for experimenting
with the language further. A better one will be designed when we have
sensible error management.
This commit is contained in:
Lawrence Bethlenfalvy
2023-09-17 16:37:39 +01:00
parent 1078835e8b
commit 7396078304
84 changed files with 563 additions and 721 deletions
Download Patch File Download Diff File Expand all files Collapse all files

34
src/parse/lexer.rs
View File

@@ -25,10 +25,12 @@ pub struct Entry {
}
impl Entry {
/// Checks if the lexeme is a comment or line break
#[must_use]
pub fn is_filler(&self) -> bool {
matches!(self.lexeme, Lexeme::Comment(_) | Lexeme::BR)
}
#[must_use]
pub fn is_keyword(&self) -> bool {
matches!(
self.lexeme,
@@ -40,12 +42,15 @@ impl Entry {
)
}
#[must_use]
pub fn location(&self) -> Location { self.location.clone() }
#[must_use]
pub fn range(&self) -> Range<usize> {
self.location.range().expect("An Entry can only have a known location")
}
#[must_use]
pub fn file(&self) -> Rc<VName> {
self.location.file().expect("An Entry can only have a range location")
}
@@ -57,30 +62,6 @@ impl Display for Entry {
}
}
// impl From<Entry> for (Lexeme, Range<usize>) {
// fn from(ent: Entry) -> Self {
// (ent.lexeme.clone(), ent.range())
// }
// }
// impl Span for Entry {
// type Context = (Lexeme, Rc<Vec<String>>);
// type Offset = usize;
// fn context(&self) -> Self::Context {
// (self.lexeme.clone(), self.file())
// }
// fn start(&self) -> Self::Offset {
// self.range().start()
// }
// fn end(&self) -> Self::Offset {
// self.range().end()
// }
// fn new((lexeme, file): Self::Context, range: Range<Self::Offset>) -> Self {
// Self { lexeme, location: Location::Range { file, range } }
// }
// }
impl AsRef<Location> for Entry {
fn as_ref(&self) -> &Location { &self.location }
}
@@ -159,12 +140,14 @@ impl Display for Lexeme {
}
impl Lexeme {
#[must_use]
pub fn rule(prio: impl Into<f64>) -> Self {
Lexeme::Arrow(
NotNan::new(prio.into()).expect("Rule priority cannot be NaN"),
)
}
#[must_use]
pub fn parser<E: chumsky::Error<Entry>>(
self,
) -> impl Parser<Entry, Entry, Error = E> + Clone {
@@ -181,10 +164,12 @@ impl Display for LexedText {
}
}
#[must_use]
fn paren_parser(lp: char, rp: char) -> impl SimpleParser<char, Lexeme> {
just(lp).to(Lexeme::LP(lp)).or(just(rp).to(Lexeme::RP(lp)))
}
#[must_use]
pub fn literal_parser<'a>(
ctx: impl Context + 'a,
) -> impl SimpleParser<char, Literal> + 'a {
@@ -199,6 +184,7 @@ pub fn literal_parser<'a>(
pub static BASE_OPS: &[&str] = &[",", ".", "..", "...", "*"];
#[must_use]
pub fn lexer<'a>(
ctx: impl Context + 'a,
source: Rc<String>,