1 files changed, 158 insertions, 0 deletions
diff --git a/macros/src/lib.rs b/macros/src/lib.rs
new file mode 100644
index 0000000..222f14d
--- /dev/null
+++ b/macros/src/lib.rs
@@ -0,0 +1,158 @@
+extern crate proc_macro;
+use proc_macro::TokenStream;
+use proc_macro2::{Ident, Span};
+use quote::quote;
+
+use syn::parse_macro_input;
+
+mod macro_types;
+
+use macro_types::*;
+
+fn generate_help(items: &Items) -> proc_macro2::TokenStream {
+    let command_help = items.inner.iter().filter_map(|x| {
+        if let Item::Command(command) = x {
+            let help = command.help();
+            Some(quote! {
+                bot.send_notice(target, #help).unwrap();
+            })
+        } else {
+            None
+        }
+    });
+
+    let matcher_help = items.inner.iter().filter_map(|x| {
+        if let Item::Matcher(matcher) = x {
+            let help = matcher.help();
+            Some(quote! {
+                bot.send_notice(target, #help).unwrap();
+            })
+        } else {
+            None
+        }
+    });
+
+    let hook_help = items.inner.iter().filter_map(|x| {
+        if let Item::Hook(hook) = x {
+            let help = hook.help();
+            Some(quote! {
+                bot.send_notice(target, #help).unwrap();
+            })
+        } else {
+            None
+        }
+    });
+
+    let gen = quote! {
+        let target = message.source_nickname().unwrap();
+
+        bot.send_notice(target, "COMMANDS:").unwrap();
+        #(#command_help)*
+
+        bot.send_notice(target, "MATCHERS:").unwrap();
+        #(#matcher_help)*
+
+        bot.send_notice(target, "HOOKS:").unwrap();
+        #(#hook_help)*
+    };
+    gen.into()
+}
+
+#[proc_macro]
+pub fn catinator(tokens: TokenStream) -> TokenStream {
+    let items = parse_macro_input!(tokens as Items);
+
+    let hooks = items.inner.iter().filter_map(|x| {
+        if let Item::Hook(hook) = x {
+            Some(hook.to_call())
+        } else {
+            None
+        }
+    });
+
+    let commands = items.inner.iter().filter_map(|x| {
+        if let Item::Command(command) = x {
+            Some(command.to_call())
+        } else {
+            None
+        }
+    });
+
+    let matchers = items.inner.iter().filter_map(|x| {
+        if let Item::Matcher(command) = x {
+            Some(command.to_call())
+        } else {
+            None
+        }
+    });
+
+    let matchers_regex = items.inner.iter().filter_map(|x| {
+        if let Item::Matcher(matcher) = x {
+            let name = &matcher.name;
+            let regex = &matcher.matcher;
+
+            let ident = Ident::new(&name.value(), Span::call_site());
+
+            Some(quote! {
+                let #ident = regex::Regex::new(#regex).unwrap();
+            })
+        } else {
+            None
+        }
+    });
+
+    let help = generate_help(&items);
+
+    let gen = quote! {
+        use std::env;
+
+        use futures::prelude::*;
+        use tracing::{info, debug, trace};
+
+        use irc::client::prelude::*;
+        use catinator::Bot;
+
+        let config_path = env::var("CATINATOR_CONFIG").unwrap_or("config.toml".to_string());
+        info!("starting bot with config file {}", config_path);
+        let mut bot = Bot::new(&config_path).await.unwrap();
+
+        if bot.config.server.sasl {
+            info!("initializing sasl");
+            bot.sasl_init().await.unwrap()
+        }
+
+        #(#matchers_regex)*
+
+        info!("starting main event loop");
+        let mut stream = bot.irc_client.stream().unwrap();
+
+        while let Some(message) = stream.next().await.transpose().unwrap() {
+            trace!("{:?}", message);
+
+            let command = message.clone().command;
+
+            #(#hooks)*
+
+            match &command {
+                Command::PRIVMSG(_target, text) => {
+                    let mut word = text.split_ascii_whitespace().next().unwrap().chars();
+                    let prefix = word.next().unwrap();
+                    let rest: String = word.collect();
+
+                    if prefix == bot.config.settings.prefix {
+                        if "help" == rest {
+                            #help
+                        }
+
+                        #(#commands)*
+                    } else {
+                        #(#matchers)*
+                    }
+                }
+                _ => (),
+            }
+        }
+    };
+
+    return gen.into();
+}