Add unspecified Size variant

This commit adds an unspecified variant for the Size enum, which
serializes to an empty string

Author: russcam

api_generator/src/api_generator/code_gen/params.rs

@@ -5,11 +5,9 @@ use quote::Tokens;
 use regex::Regex;
 
 pub fn generate(api: &Api) -> Result<String, failure::Error> {
-    let mut tokens = quote::Tokens::new();
-    let header = quote!(
+    let mut tokens = quote!(
         use serde::{Serialize, Deserialize};
     );
-    tokens.append(header);
     for e in &api.enums {
         generate_param(&mut tokens, &e);
     }
@@ -22,9 +20,11 @@ fn generate_param(tokens: &mut Tokens, e: &ApiEnum) {
     let (renames, variants): (Vec<String>, Vec<syn::Ident>) = e
         .values
         .iter()
-        .filter(|v| !v.is_empty())
         .map(|v| {
-            if !v.contains('(') {
+            if v.is_empty() {
+                (v.to_owned(), syn::Ident::from("Unspecified"))
+            }
+            else if !v.contains('(') {
                 (v.to_owned(), syn::Ident::from(v.to_pascal_case()))
             } else {
                 lazy_static! {

elasticsearch/src/generated/params.rs

@@ -128,6 +128,8 @@ pub enum SearchType {
 #[derive(Debug, PartialEq, Deserialize, Serialize, Clone, Copy)]
 #[doc = "The multiplier in which to display values"]
 pub enum Size {
+    #[serde(rename = "")]
+    Unspecified,
     #[serde(rename = "k")]
     K,
     #[serde(rename = "m")]