From c4c325ef653126a5d0150a3aff03f9cef03a6d6e Mon Sep 17 00:00:00 2001
From: Sharad Chand
Date: Sun, 18 Mar 2018 09:16:59 +0545
Subject: Optional validator params and wraping for Option<Option<T>>

---
 validator_derive/src/quoting.rs | 11 +++++++++--
 1 file changed, 9 insertions(+), 2 deletions(-)

(limited to 'validator_derive/src')

diff --git a/validator_derive/src/quoting.rs b/validator_derive/src/quoting.rs
index bf2a531..2ffade8 100644
--- a/validator_derive/src/quoting.rs
+++ b/validator_derive/src/quoting.rs
@@ -40,7 +40,8 @@ impl FieldQuoter {
 
     pub fn get_optional_validator_param(&self) -> quote::Tokens {
         let ident = &self.ident;
-        if self._type.starts_with("Option<&") || NUMBER_TYPES.contains(&self._type.as_ref()) {
+        if self._type.starts_with("Option<&") || self._type.starts_with("Option<Option<&")
+            || NUMBER_TYPES.contains(&self._type.as_ref()) {
           quote!(#ident)
         } else {
           quote!(ref #ident)
@@ -52,7 +53,13 @@ impl FieldQuoter {
     pub fn wrap_if_option(&self, tokens: quote::Tokens) -> quote::Tokens {
         let field_ident = &self.ident;
         let optional_pattern_matched = self.get_optional_validator_param();
-        if self._type.starts_with("Option<") {
+        if self._type.starts_with("Option<Option<") {
+            return quote!(
+                if let Some(Some(#optional_pattern_matched)) = self.#field_ident {
+                    #tokens
+                }
+            )
+        } else if self._type.starts_with("Option<") {
             return quote!(
                 if let Some(#optional_pattern_matched) = self.#field_ident {
                     #tokens
-- 
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