Allow digits in identifiers in simplexpr

crates/simplexpr/src/parser/lexer.rs

@@ -99,7 +99,7 @@ regex_rules! {
     r"[ \n\n\f]+" => |_| Token::Skip,
     r";.*"=> |_| Token::Comment,
 
-    r"[a-zA-Z_-]+" => |x| Token::Ident(x.to_string()),
+    r"[a-zA-Z_][a-zA-Z0-9_-]*" => |x| Token::Ident(x.to_string()),
     r"[+-]?(?:[0-9]+[.])?[0-9]+" => |x| Token::NumLit(x.to_string())
 }
 
@@ -278,6 +278,8 @@ mod test {
 
     snapshot_string! {
         basic                 => v!(r#"bar "foo""#),
+        digit                 => v!(r#"12"#),
+        number_in_ident       => v!(r#"foo_1_bar"#),
         interpolation_1       => v!(r#" "foo ${2 * 2} bar" "#),
         interpolation_nested  => v!(r#" "foo ${(2 * 2) + "${5 + 5}"} bar" "#),
         escaping              => v!(r#" "a\"b\{}" "#),

crates/simplexpr/src/parser/snapshots/simplexpr__parser__lexer__test__digit.snap

@@ -0,0 +1,6 @@
+---
+source: crates/simplexpr/src/parser/lexer.rs
+expression: "v!(r#\"12\"#)"
+
+---
+(0, NumLit("12"), 2)

crates/simplexpr/src/parser/snapshots/simplexpr__parser__lexer__test__number_in_ident.snap

@@ -0,0 +1,6 @@
+---
+source: crates/simplexpr/src/parser/lexer.rs
+expression: "v!(r#\"foo_1_bar\"#)"
+
+---
+(0, Ident("foo_1_bar"), 9)

crates/yuck/examples/errors.rs

@@ -4,6 +4,7 @@
 //};
 
 fn main() {
+    println!("hi");
     // let mut files = codespan_reporting::files::SimpleFiles::new();
 
     // let input = r#"

crates/yuck/src/config/file_provider.rs

@@ -69,7 +69,7 @@ impl YuckFiles {
 }
 
 impl YuckFiles {
-    fn get_file(&self, id: usize) -> Result<&YuckFile, codespan_reporting::files::Error> {
+    pub fn get_file(&self, id: usize) -> Result<&YuckFile, codespan_reporting::files::Error> {
         self.files.get(&id).ok_or(codespan_reporting::files::Error::FileMissing)
     }