go-tdlib/codegen/type.go

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package codegen
import (
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"bytes"
"fmt"
"github.com/zelenin/go-tdlib/tlparser"
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)
func GenerateTypes(schema *tlparser.Schema, packageName string) []byte {
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buf := bytes.NewBufferString("")
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buf.WriteString(fmt.Sprintf("%s\n\npackage %s\n\n", header, packageName))
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buf.WriteString(`import (
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"encoding/json"
)
`)
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buf.WriteString("const (\n")
for _, entity := range schema.Classes {
tdlibClass := TdlibClass(entity.Name, schema)
buf.WriteString(fmt.Sprintf(" %s = %q\n", tdlibClass.ToClassConst(), entity.Name))
}
for _, entity := range schema.Types {
tdlibType := TdlibType(entity.Name, schema)
if tdlibType.IsInternal() || tdlibType.HasClass() {
continue
}
buf.WriteString(fmt.Sprintf(" %s = %q\n", tdlibType.ToClassConst(), entity.Class))
}
buf.WriteString(")")
buf.WriteString("\n\n")
buf.WriteString("const (\n")
for _, entity := range schema.Types {
tdlibType := TdlibType(entity.Name, schema)
if tdlibType.IsInternal() {
continue
}
buf.WriteString(fmt.Sprintf(" %s = %q\n", tdlibType.ToTypeConst(), entity.Name))
}
buf.WriteString(")")
buf.WriteString("\n\n")
for _, class := range schema.Classes {
tdlibClass := TdlibClass(class.Name, schema)
buf.WriteString(fmt.Sprintf(`// %s
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type %s interface {
%sType() string
}
`, class.Description, tdlibClass.ToGoType(), tdlibClass.ToGoType()))
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}
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for _, typ := range schema.Types {
tdlibType := TdlibType(typ.Name, schema)
if tdlibType.IsInternal() {
continue
}
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buf.WriteString("// " + typ.Description + "\n")
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if len(typ.Properties) > 0 {
buf.WriteString(`type ` + tdlibType.ToGoType() + ` struct {
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meta
`)
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for _, property := range typ.Properties {
tdlibTypeProperty := TdlibTypeProperty(property.Name, property.Type, schema)
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buf.WriteString(fmt.Sprintf(" // %s\n", property.Description))
buf.WriteString(fmt.Sprintf(" %s %s `json:\"%s\"`\n", tdlibTypeProperty.ToGoName(), tdlibTypeProperty.ToGoType(), property.Name))
}
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buf.WriteString("}\n\n")
} else {
buf.WriteString(`type ` + tdlibType.ToGoType() + ` struct{
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meta
}
`)
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}
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buf.WriteString(fmt.Sprintf(`func (entity *%s) MarshalJSON() ([]byte, error) {
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entity.meta.Type = entity.GetType()
type stub %s
return json.Marshal((*stub)(entity))
}
`, tdlibType.ToGoType(), tdlibType.ToGoType()))
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buf.WriteString(fmt.Sprintf(`func (*%s) GetClass() string {
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return %s
}
func (*%s) GetType() string {
return %s
}
`, tdlibType.ToGoType(), tdlibType.ToClassConst(), tdlibType.ToGoType(), tdlibType.ToTypeConst()))
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if tdlibType.HasClass() {
tdlibClass := TdlibClass(tdlibType.GetClass().Name, schema)
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buf.WriteString(fmt.Sprintf(`func (*%s) %sType() string {
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return %s
}
`, tdlibType.ToGoType(), tdlibClass.ToGoType(), tdlibType.ToTypeConst()))
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}
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if tdlibType.HasClassProperties() {
buf.WriteString(fmt.Sprintf(`func (%s *%s) UnmarshalJSON(data []byte) error {
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var tmp struct {
`, typ.Name, tdlibType.ToGoType()))
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var countSimpleProperties int
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for _, property := range typ.Properties {
tdlibTypeProperty := TdlibTypeProperty(property.Name, property.Type, schema)
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if !tdlibTypeProperty.IsClass() {
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buf.WriteString(fmt.Sprintf(" %s %s `json:\"%s\"`\n", tdlibTypeProperty.ToGoName(), tdlibTypeProperty.ToGoType(), property.Name))
countSimpleProperties++
} else {
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if tdlibTypeProperty.IsList() {
buf.WriteString(fmt.Sprintf(" %s %s `json:\"%s\"`\n", tdlibTypeProperty.ToGoName(), "[]json.RawMessage", property.Name))
} else {
buf.WriteString(fmt.Sprintf(" %s %s `json:\"%s\"`\n", tdlibTypeProperty.ToGoName(), "json.RawMessage", property.Name))
}
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}
}
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buf.WriteString(` }
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err := json.Unmarshal(data, &tmp)
if err != nil {
return err
}
`)
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for _, property := range typ.Properties {
tdlibTypeProperty := TdlibTypeProperty(property.Name, property.Type, schema)
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if !tdlibTypeProperty.IsClass() {
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buf.WriteString(fmt.Sprintf(" %s.%s = tmp.%s\n", typ.Name, tdlibTypeProperty.ToGoName(), tdlibTypeProperty.ToGoName()))
}
}
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if countSimpleProperties > 0 {
buf.WriteString("\n")
}
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for _, property := range typ.Properties {
tdlibTypeProperty := TdlibTypeProperty(property.Name, property.Type, schema)
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if tdlibTypeProperty.IsClass() && !tdlibTypeProperty.IsList() {
buf.WriteString(fmt.Sprintf(` field%s, _ := Unmarshal%s(tmp.%s)
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%s.%s = field%s
`, tdlibTypeProperty.ToGoName(), tdlibTypeProperty.ToGoType(), tdlibTypeProperty.ToGoName(), typ.Name, tdlibTypeProperty.ToGoName(), tdlibTypeProperty.ToGoName()))
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}
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if tdlibTypeProperty.IsClass() && tdlibTypeProperty.IsList() {
buf.WriteString(fmt.Sprintf(` field%s, _ := UnmarshalListOf%s(tmp.%s)
%s.%s = field%s
`, tdlibTypeProperty.ToGoName(), tdlibTypeProperty.GetClass().ToGoType(), tdlibTypeProperty.ToGoName(), typ.Name, tdlibTypeProperty.ToGoName(), tdlibTypeProperty.ToGoName()))
}
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}
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buf.WriteString(` return nil
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}
`)
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}
}
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return buf.Bytes()
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}