|
1 | | -use flowy_ast::{ASTContainer, ASTResult}; |
| 1 | +use flowy_ast::{ASTContainer, ASTField, ASTResult}; |
2 | 2 | use proc_macro2::TokenStream; |
3 | 3 |
|
4 | 4 | pub fn expand_derive(input: &syn::DeriveInput) -> Result<TokenStream, Vec<syn::Error>> { |
5 | 5 | let ast_result = ASTResult::new(); |
6 | | - // let cont = match ASTContainer::from_ast(&ast_result, input) { |
7 | | - // Some(cont) => cont, |
8 | | - // None => return Err(ast_result.check().unwrap_err()), |
9 | | - // }; |
| 6 | + let cont = match ASTContainer::from_ast(&ast_result, input) { |
| 7 | + Some(cont) => cont, |
| 8 | + None => return Err(ast_result.check().unwrap_err()), |
| 9 | + }; |
10 | 10 |
|
11 | 11 | let mut token_stream: TokenStream = TokenStream::default(); |
| 12 | + token_stream.extend(make_to_node_data_token_stream(&cont)); |
| 13 | + |
| 14 | + if let Some(get_value_token_stream) = make_get_set_value_token_steam(&cont) { |
| 15 | + token_stream.extend(get_value_token_stream); |
| 16 | + } |
| 17 | + |
12 | 18 | ast_result.check()?; |
13 | 19 | Ok(token_stream) |
14 | 20 | } |
| 21 | + |
| 22 | +pub fn make_alter_children_token_stream(ast: &ASTContainer) -> TokenStream { |
| 23 | + let mut token_streams = TokenStream::default(); |
| 24 | + |
| 25 | + token_streams |
| 26 | +} |
| 27 | + |
| 28 | +pub fn make_to_node_data_token_stream(ast: &ASTContainer) -> TokenStream { |
| 29 | + let struct_ident = &ast.ident; |
| 30 | + let mut token_streams = TokenStream::default(); |
| 31 | + let node_type = ast |
| 32 | + .node_type |
| 33 | + .as_ref() |
| 34 | + .expect("Define the type of the node by using #[node_type = \"xx\" in the struct"); |
| 35 | + let set_key_values = ast |
| 36 | + .data |
| 37 | + .all_fields() |
| 38 | + .filter(|field| !field.node_attrs.is_children) |
| 39 | + .flat_map(|field| { |
| 40 | + let mut field_name = field.name().expect("the name of the field should not be empty"); |
| 41 | + let original_field_name = field.name().expect("the name of the field should not be empty"); |
| 42 | + if let Some(rename) = &field.node_attrs.rename { |
| 43 | + field_name = format_ident!("{}", rename.value()); |
| 44 | + } |
| 45 | + let field_name_str = field_name.to_string(); |
| 46 | + quote! { |
| 47 | + .insert_attribute(#field_name_str, self.#original_field_name.clone()) |
| 48 | + } |
| 49 | + }); |
| 50 | + |
| 51 | + let children_fields = ast |
| 52 | + .data |
| 53 | + .all_fields() |
| 54 | + .filter(|field| field.node_attrs.is_children) |
| 55 | + .collect::<Vec<&ASTField>>(); |
| 56 | + |
| 57 | + let childrens_token_streams = match children_fields.is_empty() { |
| 58 | + true => { |
| 59 | + quote! { |
| 60 | + let children = vec![]; |
| 61 | + } |
| 62 | + } |
| 63 | + false => { |
| 64 | + let children_field = children_fields.first().unwrap(); |
| 65 | + let original_field_name = children_field |
| 66 | + .name() |
| 67 | + .expect("the name of the field should not be empty"); |
| 68 | + quote! { |
| 69 | + let children = self.#original_field_name.iter().map(|value| value.to_node_data()).collect::<Vec<NodeData>>(); |
| 70 | + } |
| 71 | + } |
| 72 | + }; |
| 73 | + |
| 74 | + token_streams.extend(quote! { |
| 75 | + impl #struct_ident { |
| 76 | + pub fn to_node_data(&self) -> NodeData { |
| 77 | + #childrens_token_streams |
| 78 | + |
| 79 | + let builder = NodeDataBuilder::new(#node_type) |
| 80 | + #(#set_key_values)* |
| 81 | + .extend_node_data(children); |
| 82 | + |
| 83 | + builder.build() |
| 84 | + } |
| 85 | + } |
| 86 | + }); |
| 87 | + |
| 88 | + token_streams |
| 89 | +} |
| 90 | + |
| 91 | +pub fn make_get_set_value_token_steam(ast: &ASTContainer) -> Option<TokenStream> { |
| 92 | + let struct_ident = &ast.ident; |
| 93 | + let mut token_streams = TokenStream::default(); |
| 94 | + |
| 95 | + let tree = format_ident!("tree"); |
| 96 | + for field in ast.data.all_fields() { |
| 97 | + if field.node_attrs.is_children { |
| 98 | + continue; |
| 99 | + } |
| 100 | + |
| 101 | + let mut field_name = field.name().expect("the name of the field should not be empty"); |
| 102 | + if let Some(rename) = &field.node_attrs.rename { |
| 103 | + field_name = format_ident!("{}", rename.value()); |
| 104 | + } |
| 105 | + |
| 106 | + let field_name_str = field_name.to_string(); |
| 107 | + let get_func_name = format_ident!("get_{}", field_name); |
| 108 | + let set_func_name = format_ident!("set_{}", field_name); |
| 109 | + let get_value_return_ty = field.ty; |
| 110 | + let set_value_input_ty = field.ty; |
| 111 | + |
| 112 | + if let Some(get_value_with_fn) = field.node_attrs.get_node_value_with() { |
| 113 | + token_streams.extend(quote! { |
| 114 | + impl #struct_ident { |
| 115 | + pub fn #get_func_name(&self) -> Option<#get_value_return_ty> { |
| 116 | + #get_value_with_fn(self.#tree.clone(), &self.path, #field_name_str) |
| 117 | + } |
| 118 | + } |
| 119 | + }); |
| 120 | + } |
| 121 | + |
| 122 | + if let Some(set_value_with_fn) = field.node_attrs.set_node_value_with() { |
| 123 | + token_streams.extend(quote! { |
| 124 | + impl #struct_ident { |
| 125 | + pub fn #set_func_name(&self, value: #set_value_input_ty) { |
| 126 | + let _ = #set_value_with_fn(self.#tree.clone(), &self.path, #field_name_str, value); |
| 127 | + } |
| 128 | + } |
| 129 | + }); |
| 130 | + } |
| 131 | + } |
| 132 | + ast.data.all_fields().for_each(|field| {}); |
| 133 | + Some(token_streams) |
| 134 | +} |
0 commit comments