Move helper type to the only file that uses it now

Author: stroiman

code-gen/code_helpers.go

@@ -6,6 +6,48 @@ import (
 	"io"
 )
 
+func WriteHeader(b *builder) {
+	b.Printf("package scripting\n\n")
+	b.Printf("// This file is generated. Do not edit.\n\n")
+}
+
+type builder struct {
+	io.Writer
+	indentLvl int
+}
+
+func newBuilder(w io.Writer) *builder {
+	return &builder{w, 0}
+}
+
+func (b builder) Printf(format string, args ...interface{}) {
+	for i := 0; i < b.indentLvl; i++ {
+		fmt.Fprint(b.Writer, "\t")
+	}
+	fmt.Fprintf(b.Writer, format, args...)
+}
+
+func (b *builder) indent() {
+	b.indentLvl++
+}
+
+func (b *builder) indentF(format string, args ...interface{}) {
+	b.indent()
+	b.Printf(format, args...)
+}
+
+func (b *builder) unIndent() {
+	b.indentLvl--
+	if b.indentLvl < 0 {
+		panic("More unindentation than indentation")
+	}
+}
+
+func (b *builder) unIndentF(format string, args ...interface{}) {
+	b.unIndent()
+	b.Printf(format, args...)
+}
+
 func generateHtmlElements(writer io.Writer) error {
 	file := newBuilder(writer)
 	output := ElementsJSON{}