Merge pull request #46 from typst/parser-ng

Next Generation Parser

1 files changed, 0 insertions, 85 deletions

diff --git a/src/syntax/ident.rs b/src/syntax/ident.rs
deleted file mode 100644
index 398e2ff9..00000000
--- a/src/syntax/ident.rs
+++ /dev/null
@@ -1,85 +0,0 @@
-use std::borrow::Borrow;
-use std::ops::Deref;
-
-use unicode_xid::UnicodeXID;
-
-use super::Span;
-use crate::util::EcoString;
-
-/// An unicode identifier with a few extra permissible characters.
-///
-/// In addition to what is specified in the [Unicode Standard][uax31], we allow:
-/// - `_` as a starting character,
-/// - `_` and `-` as continuing characters.
-///
-/// [uax31]: http://www.unicode.org/reports/tr31/
-#[derive(Debug, Clone, PartialEq)]
-pub struct Ident {
-    /// The source code location.
-    pub span: Span,
-    /// The identifier string.
-    pub string: EcoString,
-}
-
-impl Ident {
-    /// Create a new identifier from a string checking that it is a valid.
-    pub fn new(
-        string: impl AsRef<str> + Into<EcoString>,
-        span: impl Into<Span>,
-    ) -> Option<Self> {
-        if is_ident(string.as_ref()) {
-            Some(Self { span: span.into(), string: string.into() })
-        } else {
-            None
-        }
-    }
-
-    /// Return a reference to the underlying string.
-    pub fn as_str(&self) -> &str {
-        self
-    }
-}
-
-impl Deref for Ident {
-    type Target = str;
-
-    fn deref(&self) -> &Self::Target {
-        self.string.as_str()
-    }
-}
-
-impl AsRef<str> for Ident {
-    fn as_ref(&self) -> &str {
-        self
-    }
-}
-
-impl Borrow<str> for Ident {
-    fn borrow(&self) -> &str {
-        self
-    }
-}
-
-impl From<&Ident> for EcoString {
-    fn from(ident: &Ident) -> Self {
-        ident.string.clone()
-    }
-}
-
-/// Whether a string is a valid identifier.
-pub fn is_ident(string: &str) -> bool {
-    let mut chars = string.chars();
-    chars
-        .next()
-        .map_or(false, |c| is_id_start(c) && chars.all(is_id_continue))
-}
-
-/// Whether a character can start an identifier.
-pub fn is_id_start(c: char) -> bool {
-    c.is_xid_start() || c == '_'
-}
-
-/// Whether a character can continue an identifier.
-pub fn is_id_continue(c: char) -> bool {
-    c.is_xid_continue() || c == '_' || c == '-'
-}