Function CreateMarshalJSON

inception/encoder.go:483–544

(ic *Inception, si *StructInfo)

}

func CreateMarshalJSON(ic *Inception, si *StructInfo) error {
	conditionalWrites := lastConditional(si.Fields)
	out := ""

	out += "// MarshalJSON marshal bytes to json - template\n"
	out += `func (j *` + si.Name + `) MarshalJSON() ([]byte, error) {` + "\n"
	out += `var buf fflib.Buffer` + "\n"

	out += `if j == nil {` + "\n"
	out += `  buf.WriteString("null")` + "\n"
	out += "  return buf.Bytes(), nil" + "\n"
	out += `}` + "\n"

	out += `err := j.MarshalJSONBuf(&buf)` + "\n"
	out += `if err != nil {` + "\n"
	out += "  return nil, err" + "\n"
	out += `}` + "\n"
	out += `return buf.Bytes(), nil` + "\n"
	out += `}` + "\n"

	out += "// MarshalJSONBuf marshal buff to json - template\n"
	out += `func (j *` + si.Name + `) MarshalJSONBuf(buf fflib.EncodingBuffer) (error) {` + "\n"
	out += `  if j == nil {` + "\n"
	out += `    buf.WriteString("null")` + "\n"
	out += "    return nil" + "\n"
	out += `  }` + "\n"

	out += `var err error` + "\n"
	out += `var obj []byte` + "\n"
	out += `_ = obj` + "\n"
	out += `_ = err` + "\n"

	ic.q.Write("{")

	// The extra space is inserted here.
	// If nothing is written to the field this will be deleted
	// instead of the last comma.
	if conditionalWrites || len(si.Fields) == 0 {
		ic.q.Write(" ")
	}

	for _, f := range si.Fields {
		out += getField(ic, f, "j.")
	}

	// Handling the last comma is tricky.
	// If the last field has omitempty, conditionalWrites is set.
	// If something has been written, we delete the last comma,
	// by backing up the buffer, otherwise it will delete a space.
	if conditionalWrites {
		out += ic.q.Flush()
		out += `buf.Rewind(1)` + "\n"
	} else {
		ic.q.DeleteLast()
	}

	out += ic.q.WriteFlush("}")
	out += `return nil` + "\n"