func (p *parser) readFieldOptions(f *ast.Field) *parseError {
if err := p.readToken("["); err != nil {
return err
}
for !p.done {
tok := p.next()
if tok.err != nil {
return tok.err
}
// TODO: support more options than just default and packed
switch tok.value {
case "default":
f.HasDefault = true
if err := p.readToken("="); err != nil {
return err
}
tok := p.next()
if tok.err != nil {
return tok.err
}
// TODO: check type
switch f.TypeName {
case "string":
f.Default = tok.unquoted
default:
f.Default = tok.value
}
case "packed":
f.HasPacked = true
if err := p.readToken("="); err != nil {
return err
}
packed, err := p.readBool()
if err != nil {
return err
}
f.Packed = packed
default:
return p.errorf(`got %q, want "default" or "packed"`, tok.value)
}
// next should be a comma or ]
tok = p.next()
if tok.err != nil {
return tok.err
}
if tok.value == "," {
continue
}
if tok.value == "]" {
return nil
}
return p.errorf(`got %q, want "," or "]"`, tok.value)
}
return p.errorf("unexpected EOF while parsing field options")
}
