feat: rueidis.Incomplete represents an incomplete Redis command

cmds.go

@@ -5,6 +5,9 @@ import "github.com/redis/rueidis/internal/cmds"
 // Builder represents a command builder. It should only be created from the client.B() method.
 type Builder = cmds.Builder
 
+// Incomplete represents an incomplete Redis command. It should then be completed by calling the Build().
+type Incomplete = cmds.Incomplete
+
 // Completed represents a completed Redis command. It should only be created from the Build() of a command builder.
 type Completed = cmds.Completed
 

hack/cmds/gen.go

@@ -568,7 +568,7 @@ func generate(f io.Writer, structs map[string]goStruct) {
 	for _, name := range names {
 		s := structs[name]
 
-		fmt.Fprintf(f, "type %s Completed\n\n", s.FullName)
+		fmt.Fprintf(f, "type %s Incomplete\n\n", s.FullName)
 
 		if s.Node.Root {
 			printRootBuilder(f, s)
@@ -666,7 +666,7 @@ func printRootBuilder(w io.Writer, root goStruct) {
 	}
 
 	if tag := rootCf(root); tag != "" {
-		fmt.Fprintf(w, "\tc = %s{cs: get(), ks: b.ks, cf: %s}\n", root.FullName, tag)
+		fmt.Fprintf(w, "\tc = %s{cs: get(), ks: b.ks, cf: int16(%s)}\n", root.FullName, tag)
 	} else {
 		fmt.Fprintf(w, "\tc = %s{cs: get(), ks: b.ks}\n", root.FullName)
 	}
@@ -714,7 +714,7 @@ func rootCf(root goStruct) (tag string) {
 func printFinalBuilder(w io.Writer, parent goStruct, method, ss string) {
 	fmt.Fprintf(w, "func (c %s) %s() %s {\n", parent.FullName, method, ss)
 	fmt.Fprintf(w, "\tc.cs.Build()\n")
-	fmt.Fprintf(w, "\treturn %s(c)\n", ss)
+	fmt.Fprintf(w, "\treturn %s{cs: c.cs, cf: uint16(c.cf), ks: c.ks}\n", ss)
 	fmt.Fprintf(w, "}\n\n")
 }
 
@@ -766,7 +766,7 @@ func printBuilder(w io.Writer, parent, next goStruct) {
 
 	for _, cmd := range next.BuildDef.Command {
 		if cmd == "BLOCK" {
-			fmt.Fprintf(w, "\tc.cf = blockTag\n")
+			fmt.Fprintf(w, "\tc.cf = int16(blockTag)\n")
 			break
 		}
 	}

internal/cmds/cmds.go

@@ -81,6 +81,13 @@ func ToBlock(c *Completed) {
 	c.cf |= blockTag
 }
 
+// Incomplete represents an incomplete Redis command. It should then be completed by calling the Build().
+type Incomplete struct {
+	cs *CommandSlice
+	cf int16 // use int16 instead of uint16 to make a difference with Completed
+	ks uint16
+}
+
 // Completed represents a completed Redis command, should be created by the Build() of command builder.
 type Completed struct {
 	cs *CommandSlice