dolphin: Add ENUM() support (#676)

* dolphin: Add ENUM() support

* codegen: Only print warnings in debug mode

* dolphin: Unify enum names

Author: kyleconroy

examples/booktest/mysql/models.go

@@ -5,6 +5,8 @@ import (
 
 	"github.com/kyleconroy/sqlc/internal/compiler"
 	"github.com/kyleconroy/sqlc/internal/config"
+	"github.com/kyleconroy/sqlc/internal/debug"
+	"github.com/kyleconroy/sqlc/internal/sql/catalog"
 )
 
 func mysqlType(r *compiler.Result, col *compiler.Column, settings config.CombinedSettings) string {
@@ -69,7 +71,22 @@ func mysqlType(r *compiler.Result, col *compiler.Column, settings config.Combine
 		return "interface{}"
 
 	default:
-		log.Printf("unknown MySQL type: %s\n", columnType)
+		for _, schema := range r.Catalog.Schemas {
+			for _, typ := range schema.Types {
+				switch t := typ.(type) {
+				case *catalog.Enum:
+					if t.Name == columnType {
+						if schema.Name == r.Catalog.DefaultSchema {
+							return StructName(t.Name, settings)
+						}
+						return StructName(schema.Name+"_"+t.Name, settings)
+					}
+				}
+			}
+		}
+		if debug.Active {
+			log.Printf("Unknown MySQL type: %s\n", columnType)
+		}
 		return "interface{}"
 
 	}

examples/booktest/mysql/query.sql.go

@@ -5,6 +5,7 @@ import (
 
 	"github.com/kyleconroy/sqlc/internal/compiler"
 	"github.com/kyleconroy/sqlc/internal/config"
+	"github.com/kyleconroy/sqlc/internal/debug"
 	"github.com/kyleconroy/sqlc/internal/sql/catalog"
 )
 
@@ -166,8 +167,9 @@ func postgresType(r *compiler.Result, col *compiler.Column, settings config.Comb
 				}
 			}
 		}
-
-		log.Printf("unknown PostgreSQL type: %s\n", columnType)
+		if debug.Active {
+			log.Printf("unknown PostgreSQL type: %s\n", columnType)
+		}
 		return "interface{}"
 	}
 }

internal/codegen/golang/mysql_type.go

@@ -0,0 +1,2 @@
+/* name: ListFoo :many */
+SELECT * FROM foo;

internal/codegen/golang/postgresql_type.go

@@ -0,0 +1,3 @@
+CREATE TABLE foo (
+    foobar ENUM ('foo-a', 'foo_b', 'foo:c', 'foo/d', 'foo@e', 'foo+f', 'foo!g') NOT NULL
+);

internal/endtoend/testdata/enums/go/db.go renamed to internal/endtoend/testdata/ddl_create_enum/mysql/go/db.go

@@ -0,0 +1,12 @@
+{
+  "version": "1",
+  "packages": [
+    {
+      "path": "go",
+      "engine": "mysql:beta",
+      "name": "querytest",
+      "schema": "schema.sql",
+      "queries": "query.sql"
+    }
+  ]
+}