feat: add support for variadic parameters

Signed-off-by: azjezz <azjezz@protonmail.com>

Author: azjezz

src/parameter.rs

@@ -14,6 +14,7 @@ pub struct Parameter {
     pub default: Option<Value>,
     pub modifiers: Vec<Modifier>,
     pub visibility: Option<VisibilityModifier>,
+    pub variadic: bool,
 }
 
 impl Parameter {
@@ -25,6 +26,7 @@ impl Parameter {
             modifiers: vec![],
             attributes: vec![],
             visibility: None,
+            variadic: false,
         }
     }
 
@@ -40,6 +42,12 @@ impl Parameter {
         self
     }
 
+    pub fn variadic(mut self) -> Self {
+        self.variadic = true;
+
+        self
+    }
+
     pub fn default<T: Into<Value>>(mut self, default: T) -> Self {
         self.default = Some(default.into());
 
@@ -109,6 +117,10 @@ impl Generator for Parameter {
             code.push_str(&format!("{} ", data_type.generate(indentation, level)));
         }
 
+        if self.variadic {
+            code.push_str("...");
+        }
+
         code.push_str(&format!("${}", &self.name));
 
         if let Some(default) = &self.default {