1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175 176 177 178 179 180 181 182 183 184 185 186 187 188 189 190 191 192 193 194 195 196 197 198 199 200 201 202 203 204 205 206 207 208 209 210 211 212 213 214 215 216 217 218 219 220 221 222 223 224 225 226 227 228 229 230 231 232 233 234 235 236 237 238 239 240 241 242 243 244 245 246 247 248 249 250 251 252 253 254 255 256 257 258 259 260 261 262 263 264 265 266 267 268 269 270 271 272 273
use proc_macro::TokenStream; use syn::{parse_macro_input, AttributeArgs}; #[cfg(feature = "global_function")] mod global_function; #[cfg(any(feature = "nonvisualobject", feature = "visualobject"))] mod object; /// 生成全局函数 /// /// # Parameters /// - `name`: 映射的PB函数名 (默认为Rust函数名) /// /// # Examples /// ```no_run /// #[global_function(name = "gf_bitor")] /// fn bit_or(session: Session, a: pblong, b: pblong) -> pblong { a | b } /// ``` #[cfg(feature = "global_function")] #[proc_macro_attribute] pub fn global_function(args: TokenStream, input: TokenStream) -> TokenStream { match global_function::gen(parse_macro_input!(args as AttributeArgs), input) { Ok(stream) => stream, Err(e) => e.to_compile_error().into() } } /// 生成不可视对象 /// /// # Parameters /// /// - `name`: 映射的PB对象类名 (默认为Rust对象名) /// - `inherit`: 继承的对象 (此对象的字段) /// /// # Notice /// /// 继承模式不支持覆盖(override)方法实现,并且在PB端需要将父类的方法声明在子类中重新声明 /// /// # Examples /// /// - PowerBuilder /// /// ```vbscript /// /* 父类声明 */ /// forward /// global type n_parent from nonvisualobject /// end type /// end forward /// /// global type n_parent from nonvisualobject native "pbrs.dll" /// public function string of_hello (string world) /// end type /// global n_parent n_parent /// /// type variables /// end variables /// /// on n_parent.create /// call super::create /// TriggerEvent( this, "constructor" ) /// end on /// /// on n_parent.destroy /// TriggerEvent( this, "destructor" ) /// call super::destroy /// end on /// /// /* 子类声明 */ /// forward /// global type n_child from n_parent /// end type /// end forward /// /// global type n_child from n_parent native "pbrs.dll" /// // 重新声明父类方法 /// public function string of_hello (string world) /// // 声明子类私有的方法 /// public function string of_foo (string bar) /// end type /// global n_child n_child /// /// type variables /// end variables /// /// on n_child.create /// call super::create /// TriggerEvent( this, "constructor" ) /// end on /// /// on n_child.destroy /// TriggerEvent( this, "destructor" ) /// call super::destroy /// end on /// ``` /// /// - Rust(pbni-rs) /// /// ```no_run /// struct RustObject { /// session: Session, /// ctx: ContextObject /// } /// /// #[nonvisualobject(name = "n_pbni")] /// impl RustObject { /// #[constructor] /// fn new(session: Session, ctx: ContextObject) -> RustObject { /// RustObject { /// session, /// ctx /// } /// } /// #[method(name="of_Hello")] /// fn hello(&self, world: String) -> String { /// format!("hello {}!",world) /// } /// } /// /// struct RustChildObject { /// parent: RustObject /// } /// /// #[nonvisualobject(name = "n_pbni_child", inherit = "parent")] /// impl RustChildObject { /// #[constructor] /// fn new(session: Session, ctx: ContextObject) -> RustChildObject { /// RustChildObject { /// parent : RustObject { /// session, /// ctx /// } /// } /// } /// #[method(name="of_Foo")] /// fn foo(&self, bar: String) -> String { /// format!("foo {}!",bar) /// } /// } /// ``` #[cfg(feature = "nonvisualobject")] #[proc_macro_attribute] pub fn nonvisualobject(args: TokenStream, input: TokenStream) -> TokenStream { match object::gen_nvo(parse_macro_input!(args as AttributeArgs), input) { Ok(stream) => stream, Err(e) => e.to_compile_error().into() } } /// 生成可视对象 /// /// # Parameters /// /// - `name`: 映射的PB对象类名 (默认为Rust对象名) /// - `inherit`: 继承的对象 (此对象的字段) /// /// # Notice /// /// 继承模式不支持覆盖(override)方法实现,并且在PB端需要将父类的方法声明在子类中重新声明,参见[`nonvisualobject`]说明 /// /// [`nonvisualobject`]: macro@nonvisualobject /// /// # Examples /// /// ```no_run /// struct RustObject { /// session: Session, /// ctx: ContextObject /// } /// /// #[visualobject(name = "u_canvas")] /// impl RustObject { /// #[constructor] /// fn new(session: Session, ctx: ContextObject) -> RustObject { /// RustObject { /// session, /// ctx /// } /// } /// #[method(name="of_Hello")] /// fn hello(&self, world: String) -> String { /// format!("hello {}!",world) /// } /// } /// ``` #[cfg(feature = "visualobject")] #[proc_macro_attribute] pub fn visualobject(args: TokenStream, input: TokenStream) -> TokenStream { match object::gen_vo(parse_macro_input!(args as AttributeArgs), input) { Ok(stream) => stream, Err(e) => e.to_compile_error().into() } } /// 标记对象的构造函数 /// /// # Examples /// /// ```no_run /// #[constructor] /// fn new(session: Session, ctx: ContextObject) -> RustObject { /// RustObject { /// session, /// ctx /// } /// } /// ``` #[cfg(any(feature = "nonvisualobject", feature = "visualobject"))] #[proc_macro_attribute] pub fn constructor(_: TokenStream, input: TokenStream) -> TokenStream { input } /// 标记对象函数 /// /// # Parameters /// /// - `name`: 映射的PB函数类名 (默认为Rust函数名) /// - `overload`: 重载次数 (默认0,意为没有重载) /// /// # Examples /// /// ```no_run /// #[method(name="of_Hello")] /// fn hello(&self, world: String) -> String { /// format!("hello {}!",world) /// } /// ``` #[cfg(any(feature = "nonvisualobject", feature = "visualobject"))] #[proc_macro_attribute] pub fn method(_: TokenStream, input: TokenStream) -> TokenStream { input } /// 标记对象事件,如果方法体没有代码,则自动生成对应的调用代码 /// /// # Parameters /// /// - `name`: 映射的PB事件名 (默认为Rust函数名) /// /// # Required /// /// 自动生成事件代码,需要对象实现`context_mut`方法: /// /// # Examples /// /// ```no_run /// struct RustObject { /// session: Session, /// ctx: ContextObject /// } /// /// impl RustObject { /// fn context_mut(&mut self) -> &mut ContextObject { &mut self.ctx } /// } /// /// #[nonvisualobject(name = "n_pbni")] /// impl RustObject { /// #[constructor] /// fn new(session: Session, ctx: ContextObject) -> RustObject { /// RustObject { /// session, /// ctx /// } /// } /// #[event(name="onFire")] /// fn on_fire(&mut self) {} /// } /// ``` #[cfg(any(feature = "nonvisualobject", feature = "visualobject"))] #[proc_macro_attribute] pub fn event(args: TokenStream, input: TokenStream) -> TokenStream { match object::gen_event(parse_macro_input!(args as AttributeArgs), input) { Ok(stream) => stream, Err(e) => e.to_compile_error().into() } }