| 57 | } |
| 58 | |
| 59 | pub fn collect_modifiers(field: &syn::Field) -> Vec<Modifier> { |
| 60 | let mut modifiers = vec![]; |
| 61 | for attr in &field.attrs { |
| 62 | // Nest validified fields |
| 63 | if attr.path().is_ident(VALIDIFY) { |
| 64 | modifiers.push(Modifier::Nested); |
| 65 | continue; |
| 66 | } |
| 67 | |
| 68 | if !attr.path().is_ident(MODIFY) { |
| 69 | continue; |
| 70 | } |
| 71 | |
| 72 | attr.parse_nested_meta(|meta| { |
| 73 | if meta.path.is_ident(CUSTOM_MODIFIER) { |
| 74 | let content; |
| 75 | parenthesized!(content in meta.input); |
| 76 | let path: syn::Path = content.parse()?; |
| 77 | modifiers.push(Modifier::Custom { function: path }); |
| 78 | return Ok(()); |
| 79 | } |
| 80 | |
| 81 | if meta.path.is_ident(TRIM_MODIFIER) { |
| 82 | modifiers.push(Modifier::Trim); |
| 83 | return Ok(()); |
| 84 | } |
| 85 | |
| 86 | if meta.path.is_ident(LOWERCASE_MODIFIER) { |
| 87 | modifiers.push(Modifier::Lowercase); |
| 88 | return Ok(()); |
| 89 | } |
| 90 | |
| 91 | if meta.path.is_ident(UPPERCASE_MODIFIER) { |
| 92 | modifiers.push(Modifier::Uppercase); |
| 93 | return Ok(()); |
| 94 | } |
| 95 | |
| 96 | if meta.path.is_ident(CAPITALIZE_MODIFIER) { |
| 97 | modifiers.push(Modifier::Capitalize); |
| 98 | return Ok(()); |
| 99 | } |
| 100 | |
| 101 | Err(meta.error("Unrecognized modify parameter")) |
| 102 | }) |
| 103 | .unwrap_or_else(|e| abort!(e.span(), e)); |
| 104 | } |
| 105 | modifiers |
| 106 | } |