Stop leaking identifiers in parser generator and use more DSLv2 types

crates/codegen/language/definition/src/model/terminals/keyword.rs

@@ -17,8 +17,9 @@ pub struct KeywordItem {
 #[derive_spanned_type(Clone, Debug, ParseInputTokens, WriteOutputTokens)]
 pub struct KeywordDefinition {
     pub enabled: Option<VersionSpecifier>,
+    /// When the keyword is reserved, i.e. can't be used in other position (e.g. as a name)
     pub reserved: Option<VersionSpecifier>,
-
+    // Underlying keyword scanner (i.e. identifier scanner)
     pub value: KeywordValue,
 }
 

crates/codegen/language/definition/src/model/utils/identifier.rs

@@ -1,3 +1,4 @@
+use std::fmt;
 use std::ops::Deref;
 
 use proc_macro2::{Literal, TokenStream};
@@ -81,3 +82,9 @@ impl WriteOutputTokens for Identifier {
         }
     }
 }
+
+impl quote::IdentFragment for Identifier {
+    fn fmt(&self, f: &mut fmt::Formatter<'_>) -> fmt::Result {
+        self.value.fmt(f)
+    }
+}

crates/codegen/runtime/generator/Cargo.toml

@@ -12,6 +12,7 @@ indexmap = { workspace = true }
 Inflector = { workspace = true }
 infra_utils = { workspace = true }
 itertools = { workspace = true }
+once_cell = { workspace = true }
 proc-macro2 = { workspace = true }
 quote = { workspace = true }
 semver = { workspace = true }