From c282fe0177fcfc72398a09835977e81bedfeb7b8 Mon Sep 17 00:00:00 2001
From: Thorsten Riess <tr@scientific-wave.com>
Date: Sat, 22 May 2021 10:56:45 +0200
Subject: [PATCH 1/3] Extend struct tags with custom type and format

---
 parser.go | 10 ++++++++++
 1 file changed, 10 insertions(+)

diff --git a/parser.go b/parser.go
index 402eb57..3377bf2 100644
--- a/parser.go
+++ b/parser.go
@@ -1150,6 +1150,16 @@ astFieldsLoop:
 					fieldSchema.Deprecated = true
 					continue astFieldsLoop
 				}
+				if kv := strings.Split(v, "="); len(kv) == 2 {
+					switch kv[0] {
+					case "type":
+						fieldSchema.Type = kv[1]
+						fieldSchema.Ref = ""
+
+					case "format":
+						fieldSchema.Format = kv[1]
+					}
+				}
 			}
 
 			if tag := astFieldTag.Get("json"); tag != "" {

From e2e857a8219643840bfd3002c887854e6c0e6e31 Mon Sep 17 00:00:00 2001
From: Thorsten Riess <tr@scientific-wave.com>
Date: Thu, 27 May 2021 15:40:26 +0200
Subject: [PATCH 2/3] Also add the nullable property to the SchemaObject
 definition

---
 oas.go    | 2 +-
 parser.go | 3 +++
 2 files changed, 4 insertions(+), 1 deletion(-)

diff --git a/oas.go b/oas.go
index 94e1d34..0762ee6 100644
--- a/oas.go
+++ b/oas.go
@@ -144,6 +144,7 @@ type SchemaObject struct {
 	Items       *SchemaObject          `json:"items,omitempty"` // use ptr to prevent recursive error
 	Example     interface{}            `json:"example,omitempty"`
 	Deprecated  bool                   `json:"deprecated,omitempty"`
+	Nullable bool `json:"nullable,omitempty"`
 
 	// Ref is used when SchemaObject is as a ReferenceObject
 	Ref string `json:"$ref,omitempty"`
@@ -170,7 +171,6 @@ type SchemaObject struct {
 	// AdditionalProperties
 	// Description
 	// Default
-	// Nullable
 	// ReadOnly
 	// WriteOnly
 	// XML
diff --git a/parser.go b/parser.go
index 3377bf2..ad6ad0c 100644
--- a/parser.go
+++ b/parser.go
@@ -1158,6 +1158,9 @@ astFieldsLoop:
 
 					case "format":
 						fieldSchema.Format = kv[1]
+
+					case "nullable":
+						fieldSchema.Nullable, _ = strconv.ParseBool(kv[1])
 					}
 				}
 			}

From e6e1c730475e7b5fee92128ccddd969cc58f4fa9 Mon Sep 17 00:00:00 2001
From: Thorsten Riess <tr@scientific-wave.com>
Date: Thu, 27 May 2021 15:41:22 +0200
Subject: [PATCH 3/3] Fix indent

---
 oas.go | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/oas.go b/oas.go
index 0762ee6..c59226a 100644
--- a/oas.go
+++ b/oas.go
@@ -144,7 +144,7 @@ type SchemaObject struct {
 	Items       *SchemaObject          `json:"items,omitempty"` // use ptr to prevent recursive error
 	Example     interface{}            `json:"example,omitempty"`
 	Deprecated  bool                   `json:"deprecated,omitempty"`
-	Nullable bool `json:"nullable,omitempty"`
+	Nullable    bool                   `json:"nullable,omitempty"`
 
 	// Ref is used when SchemaObject is as a ReferenceObject
 	Ref string `json:"$ref,omitempty"`