Created Bool type

internal/codegen/codegen.go

@@ -21,7 +21,6 @@ func identifier(s string) string {
 
 type AttribTypeInfo struct {
 	Template string
-	Imports  []string
 }
 
 func simpleTemplate(paramType, convertExpr string) string {
@@ -56,8 +55,7 @@ var attribTypes = map[string]AttribTypeInfo{
 		`,
 	},
 	"explicit bool": {
-		Template: simpleTemplate("bool", "strconv.FormatBool(%s)"),
-		Imports:  []string{"strconv"},
+		Template: simpleTemplate("bool", "Bool(%s).String()"),
 	},
 	"int": {
 		Template: simpleTemplate("int", "Int(%s).String()"),
@@ -75,8 +73,7 @@ var attribTypes = map[string]AttribTypeInfo{
 
 // Def represents a top-level definition and its required imports.
 type Def struct {
-	Source  string
-	Imports []string
+	Source string
 }
 
 type Spec interface {
@@ -94,8 +91,7 @@ func (spec AttribSpec) Generate() Def {
 	comment := fmt.Sprintf("// %s creates a \"%s\" attribute\n", ident, name)
 	template := attribTypes[spec.Type].Template
 	return Def{
-		Source:  comment + fmt.Sprintf(template, ident, name),
-		Imports: attribTypes[spec.Type].Imports,
+		Source: comment + fmt.Sprintf(template, ident, name),
 	}
 }
 
@@ -149,17 +145,6 @@ func Render(defs []Def, pkgName string) ([]byte, error) {
 	buf.WriteString(`import "gitlab.codemonkeysoftware.net/b/hatmill"
 	`)
 
-	// Print each import only once.
-	imports := make(map[string]struct{})
-	for _, def := range defs {
-		for _, imp := range def.Imports {
-			imports[imp] = struct{}{}
-		}
-	}
-	for imp := range imports {
-		fmt.Fprintf(buf, "import \"%s\"\n", imp)
-	}
-
 	for _, def := range defs {
 		buf.WriteString(def.Source)
 	}