85 lines
1.7 KiB
Rust
85 lines
1.7 KiB
Rust
use effers::program;
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#[program(MyCoolProgram =>
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Printer(print(&self) as p, available as printer_available),
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Logger(debug(&mut self), info(self))
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)]
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fn my_program(val: u8) -> u8 {
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if printer_available() {
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p("hey hi hello");
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}
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debug("this is a debug-level log");
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info("this is a info-level log");
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val + 3
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}
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#[program(Printer(print(&self) as p))]
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fn other_program() {
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p("hey hi hello");
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}
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fn main() {
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// call the first program twice
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let result: u8 = MyCoolProgram.add(IoPrinter).add(FileLogger).run(3);
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assert_eq!(result, 6);
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let other_result: u8 = MyCoolProgram
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.add(IoPrinter)
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.add(NetworkLogger {
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credentials: "secret password".to_string(),
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})
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.run(8);
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assert_eq!(other_result, 11);
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// other program
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OtherProgram.add(IoPrinter).run();
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}
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trait Printer {
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fn print(&self, s: &str);
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fn available() -> bool;
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}
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trait Logger {
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fn debug(&mut self, s: &str);
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fn info(self, s: &str);
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}
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struct IoPrinter;
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impl Printer for IoPrinter {
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fn print(&self, s: &str) {
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println!("{}", s)
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}
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fn available() -> bool {
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true
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}
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}
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struct FileLogger;
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impl Logger for FileLogger {
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fn debug(&mut self, s: &str) {
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println!("debug: {}", s)
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}
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fn info(self, s: &str) {
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println!("info: {}", s)
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}
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}
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struct NetworkLogger {
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credentials: String,
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}
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impl Logger for NetworkLogger {
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fn debug(&mut self, s: &str) {
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println!(
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"debug through network: {}; with password {}",
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s, self.credentials
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)
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}
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fn info(self, s: &str) {
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println!(
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"info through network: {}; with password {}",
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s, self.credentials
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)
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}
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}
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