generate: Add option type to parser

generate/parse.go

@@ -214,12 +214,19 @@ func (this *parser) parseField(doc string) (uint16, Field, error) {
 	name := this.Value()
 	err = this.Next()
 	if err != nil { return 0, Field { }, err }
+	option := false
+	if this.Kind() == TokenOption {
+		option = true
+		err = this.Next()
+		if err != nil { return 0, Field { }, err }
+	}
 	typ, err := this.parseType()
 	if err != nil { return 0, Field { }, err }
 	return uint16(key), Field {
-		Name: name,
-		Doc:  doc,
-		Type: typ,
+		Name:   name,
+		Doc:    doc,
+		Type:   typ,
+		Option: option,
 	}, nil
 }
 

generate/parse_test.go

@@ -34,6 +34,7 @@ func TestParse(test *testing.T) {
 				0x0001: Field { Name: "Bio",       Type: TypeString { } },
 				0x0002: Field { Name: "Followers", Type: TypeInt { Bits: 32 } },
 				0x0003: Field { Name: "Bouncy",    Type: TypeBool { } },
+				0x0004: Field { Name: "Wings",     Type: TypeInt { Bits: 32 } },
 			},
 		},
 	}
@@ -63,6 +64,7 @@ func TestParse(test *testing.T) {
 		0001 Bio       String,
 		0002 Followers U32,
 		0003 Bouncy    Bool,
+		0004 Wings     ?U32,
 	}
 
 	Anything Any