Improve clarity of `ast.rs` for newcomers to the codebase (#5784)

Co-authored-by: PgBiel <9021226+PgBiel@users.noreply.github.com>
Co-authored-by: T0mstone <39707032+T0mstone@users.noreply.github.com>

1 files changed, 0 insertions, 21 deletions

diff --git a/crates/typst-syntax/src/node.rs b/crates/typst-syntax/src/node.rs
index fde2eaca..948657ca 100644
--- a/crates/typst-syntax/src/node.rs
+++ b/crates/typst-syntax/src/node.rs
@@ -5,7 +5,6 @@ use std::sync::Arc;
 
 use ecow::{eco_format, eco_vec, EcoString, EcoVec};
 
-use crate::ast::AstNode;
 use crate::{FileId, Span, SyntaxKind};
 
 /// A node in the untyped syntax tree.
@@ -119,26 +118,6 @@ impl SyntaxNode {
         }
     }
 
-    /// Whether the node can be cast to the given AST node.
-    pub fn is<'a, T: AstNode<'a>>(&'a self) -> bool {
-        self.cast::<T>().is_some()
-    }
-
-    /// Try to convert the node to a typed AST node.
-    pub fn cast<'a, T: AstNode<'a>>(&'a self) -> Option<T> {
-        T::from_untyped(self)
-    }
-
-    /// Cast the first child that can cast to the AST type `T`.
-    pub fn cast_first_match<'a, T: AstNode<'a>>(&'a self) -> Option<T> {
-        self.children().find_map(Self::cast)
-    }
-
-    /// Cast the last child that can cast to the AST type `T`.
-    pub fn cast_last_match<'a, T: AstNode<'a>>(&'a self) -> Option<T> {
-        self.children().rev().find_map(Self::cast)
-    }
-
     /// Whether the node or its children contain an error.
     pub fn erroneous(&self) -> bool {
         match &self.0 {