diff --git a/parser/src/grammar_builder.rs b/parser/src/grammar_builder.rs
index 8dac71f..4c844e9 100644
--- a/parser/src/grammar_builder.rs
+++ b/parser/src/grammar_builder.rs
@@ -3,8 +3,8 @@ use std::{collections::HashMap, sync::atomic::AtomicU32};
 use anyhow::{ensure, Result};
 
 use crate::api::{
-    GenGrammarOptions, GrammarId, GrammarWithLexer, Node, NodeId, NodeProps, RegexId, RegexNode,
-    RegexSpec, TopLevelGrammar,
+    GenGrammarOptions, GenOptions, GrammarId, GrammarWithLexer, Node, NodeId, NodeProps, RegexId,
+    RegexNode, RegexSpec, TopLevelGrammar,
 };
 
 #[derive(Clone, Copy, PartialEq, Eq, Debug, Hash)]
@@ -211,6 +211,23 @@ impl GrammarBuilder {
         })
     }
 
+    pub fn gen_rx(&mut self, regex: &str, stop_regex: &str) -> NodeRef {
+        self.gen(GenOptions {
+            body_rx: RegexSpec::Regex(regex.to_string()),
+            stop_rx: RegexSpec::Regex(stop_regex.to_string()),
+            stop_capture_name: None,
+            lazy: None,
+            temperature: None,
+        })
+    }
+
+    pub fn gen(&mut self, data: GenOptions) -> NodeRef {
+        self.add_node(Node::Gen {
+            data,
+            props: NodeProps::default(),
+        })
+    }
+
     pub fn lexeme(&mut self, rx: RegexSpec, json_quoted: bool) -> NodeRef {
         self.add_node(Node::Lexeme {
             rx,