diff --git a/src/ast.rs b/src/ast.rs
index de220e6..bac3b71 100644
--- a/src/ast.rs
+++ b/src/ast.rs
@@ -46,6 +46,12 @@ pub struct GlobalBlock {
     statements: Vec<Box<dyn Statement>>,
 }
 
+impl GlobalBlock {
+    pub fn push_node(&mut self, node: Box<dyn Statement>) {
+        self.statements.push(node);
+    }
+}
+
 impl ToString for GlobalBlock {
     fn to_string(&self) -> String {
         let mut s = String::new();
@@ -64,6 +70,12 @@ pub struct Block {
     statements: Vec<Box<dyn Statement>>,
 }
 
+impl Block {
+    pub fn push_node(&mut self, node: Box<dyn Statement>) {
+        self.statements.push(node);
+    }
+}
+
 impl ToString for Block {
     fn to_string(&self) -> String {
         let mut s = String::from("{ ");