fix tab in gen

hooks/sql/gen.go

@@ -67,10 +67,9 @@ func main() {
 		}
 		h := getHash(ifaces)
 		b.WriteString(fmt.Sprintf("\tif _, ok := dc.(wrapConn%04d_%s); ok {\n", n, h))
-		b.WriteString("\treturn struct {\n")
+		b.WriteString("\t\treturn struct {\n")
-		b.WriteString("\t\tdriver.Conn\n")
+		b.WriteString(strings.Join(append([]string{"\t\t\tdriver.Conn"}, ifaces...), "\n\t\t\t"))
-		b.WriteString(fmt.Sprintf("\t\t\t%s", strings.Join(ifaces, "\n\t\t\t")))
+		b.WriteString("\n\t\t}{")
-		b.WriteString("\t\t\n}{")
 		for idx := range ifaces {
 			if idx > 0 {
 				b.WriteString(", ")
@@ -82,10 +81,10 @@ func main() {
 			}
 		}
 		b.WriteString(", c}\n")
-		b.WriteString("}\n\n")
+		b.WriteString("\t}\n\n")
 	}
-	b.WriteString("return c\n")
+	b.WriteString("\treturn c\n")
-	b.WriteString("}\n")
+	b.WriteString("}\n\n")
 
 	for idx := len(comboConn) - 1; idx >= 0; idx-- {
 		ifaces := comboConn[idx]
@@ -113,10 +112,9 @@ func main() {
 		}
 		h := getHash(ifaces)
 		b.WriteString(fmt.Sprintf("\tif _, ok := stmt.(wrapStmt%04d_%s); ok {\n", n, h))
-		b.WriteString("\treturn struct {\n")
+		b.WriteString("\t\treturn struct {\n")
-		b.WriteString("\t\tdriver.Stmt\n")
+		b.WriteString(strings.Join(append([]string{"\t\t\tdriver.Stmt"}, ifaces...), "\n\t\t\t"))
-		b.WriteString(fmt.Sprintf("\t\t\t%s", strings.Join(ifaces, "\n\t\t\t")))
+		b.WriteString("\n\t\t}{")
-		b.WriteString("\t\t\n}{")
 		for idx := range ifaces {
 			if idx > 0 {
 				b.WriteString(", ")
@@ -128,9 +126,9 @@ func main() {
 			}
 		}
 		b.WriteString(", c}\n")
-		b.WriteString("}\n\n")
+		b.WriteString("\t}\n\n")
 	}
-	b.WriteString("return c\n")
+	b.WriteString("\treturn c\n")
 	b.WriteString("}\n")
 
 	for idx := len(comboStmt) - 1; idx >= 0; idx-- {
@@ -140,15 +138,15 @@ func main() {
 			continue
 		}
 		h := getHash(ifaces)
-		b.WriteString(fmt.Sprintf("// %s\n", strings.Join(ifaces, "|")))
+		b.WriteString(fmt.Sprintf("\n// %s\n", strings.Join(ifaces, "|")))
 		b.WriteString(fmt.Sprintf("type wrapStmt%04d_%s interface {\n", n, h))
 		for _, iface := range ifaces {
 			b.WriteString(fmt.Sprintf("\t%s\n", iface))
 		}
-		b.WriteString("}\n\n")
+		b.WriteString("}\n")
 	}
 
-	fmt.Printf("%s\n", b.String())
+	fmt.Printf("%s", b.String())
 }
 
 // all returns all combinations for a given string array.