re-organize project

Cargo.lock

@@ -10,6 +10,14 @@ dependencies = [
  "pest_derive",
 ]
 
+[[package]]
+name = "albireo-language"
+version = "0.1.0"
+dependencies = [
+ "albireo",
+ "executor",
+]
+
 [[package]]
 name = "block-buffer"
 version = "0.10.4"
@@ -54,6 +62,13 @@ dependencies = [
  "crypto-common",
 ]
 
+[[package]]
+name = "executor"
+version = "0.1.0"
+dependencies = [
+ "albireo",
+]
+
 [[package]]
 name = "generic-array"
 version = "0.14.7"
@@ -72,9 +87,9 @@ checksum = "9c198f91728a82281a64e1f4f9eeb25d82cb32a5de251c6bd1b5154d63a8e7bd"
 
 [[package]]
 name = "memchr"
-version = "2.7.1"
+version = "2.7.2"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "523dc4f511e55ab87b694dc30d0f820d60906ef06413f93d4d7a1385599cc149"
+checksum = "6c8640c5d730cb13ebd907d8d04b52f55ac9a2eec55b440c8892f40d56c76c1d"
 
 [[package]]
 name = "once_cell"
@@ -84,9 +99,9 @@ checksum = "3fdb12b2476b595f9358c5161aa467c2438859caa136dec86c26fdd2efe17b92"
 
 [[package]]
 name = "pest"
-version = "2.7.7"
+version = "2.7.8"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "219c0dcc30b6a27553f9cc242972b67f75b60eb0db71f0b5462f38b058c41546"
+checksum = "56f8023d0fb78c8e03784ea1c7f3fa36e68a723138990b8d5a47d916b651e7a8"
 dependencies = [
  "memchr",
  "thiserror",
@@ -95,9 +110,9 @@ dependencies = [
 
 [[package]]
 name = "pest_derive"
-version = "2.7.7"
+version = "2.7.8"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "22e1288dbd7786462961e69bfd4df7848c1e37e8b74303dbdab82c3a9cdd2809"
+checksum = "b0d24f72393fd16ab6ac5738bc33cdb6a9aa73f8b902e8fe29cf4e67d7dd1026"
 dependencies = [
  "pest",
  "pest_generator",
@@ -105,9 +120,9 @@ dependencies = [
 
 [[package]]
 name = "pest_generator"
-version = "2.7.7"
+version = "2.7.8"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "1381c29a877c6d34b8c176e734f35d7f7f5b3adaefe940cb4d1bb7af94678e2e"
+checksum = "fdc17e2a6c7d0a492f0158d7a4bd66cc17280308bbaff78d5bef566dca35ab80"
 dependencies = [
  "pest",
  "pest_meta",
@@ -118,9 +133,9 @@ dependencies = [
 
 [[package]]
 name = "pest_meta"
-version = "2.7.7"
+version = "2.7.8"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "d0934d6907f148c22a3acbda520c7eed243ad7487a30f51f6ce52b58b7077a8a"
+checksum = "934cd7631c050f4674352a6e835d5f6711ffbfb9345c2fc0107155ac495ae293"
 dependencies = [
  "once_cell",
  "pest",
@@ -129,9 +144,9 @@ dependencies = [
 
 [[package]]
 name = "proc-macro2"
-version = "1.0.78"
+version = "1.0.79"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "e2422ad645d89c99f8f3e6b88a9fdeca7fabeac836b1002371c4367c8f984aae"
+checksum = "e835ff2298f5721608eb1a980ecaee1aef2c132bf95ecc026a11b7bf3c01c02e"
 dependencies = [
  "unicode-ident",
 ]
@@ -158,9 +173,9 @@ dependencies = [
 
 [[package]]
 name = "syn"
-version = "2.0.48"
+version = "2.0.55"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "0f3531638e407dfc0814761abb7c00a5b54992b849452a0646b7f65c9f770f3f"
+checksum = "002a1b3dbf967edfafc32655d0f377ab0bb7b994aa1d32c8cc7e9b8bf3ebb8f0"
 dependencies = [
  "proc-macro2",
  "quote",
@@ -169,18 +184,18 @@ dependencies = [
 
 [[package]]
 name = "thiserror"
-version = "1.0.57"
+version = "1.0.58"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "1e45bcbe8ed29775f228095caf2cd67af7a4ccf756ebff23a306bf3e8b47b24b"
+checksum = "03468839009160513471e86a034bb2c5c0e4baae3b43f79ffc55c4a5427b3297"
 dependencies = [
  "thiserror-impl",
 ]
 
 [[package]]
 name = "thiserror-impl"
-version = "1.0.57"
+version = "1.0.58"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "a953cb265bef375dae3de6663da4d3804eee9682ea80d8e2542529b73c531c81"
+checksum = "c61f3ba182994efc43764a46c018c347bc492c79f024e705f46567b418f6d4f7"
 dependencies = [
  "proc-macro2",
  "quote",

Cargo.toml

@@ -1,10 +1,14 @@
 [package]
-name = "albireo"
+name = "albireo-language"
 version = "0.1.0"
 edition = "2021"
 
-# See more keys and their definitions at https://doc.rust-lang.org/cargo/reference/manifest.html
+[workspace]
+members = [
+  "albireo"
+, "executor"
+]
 
 [dependencies]
-pest = "2.7.6"
+albireo  = { path = "albireo" }
-pest_derive = "2.7.6"
+executor = { path = "executor" }

albireo/Cargo.toml

@@ -0,0 +1,12 @@
+[package]
+name = "albireo"
+version = "0.1.0"
+edition = "2021"
+
+[lib]
+path = "src/albireo.rs"
+
+[dependencies]
+pest = "2.7.6"
+pest_derive = "2.7.6"
+

albireo/src/albireo.pest

@@ -194,7 +194,7 @@ module_declare = {
 }
 
 program = {
-    SOI ~ module_declare ~ declaration*
+    SOI ~ module_declare ~ declaration* ~ EOI
 }
 
 WHITESPACE = _{ " " | NEWLINE }

albireo/src/albireo.rs

@@ -2,20 +2,23 @@
 #[grammar = "albireo.pest"]
 pub struct AlbireoParser;
 
+use pest::Parser;
 use pest::iterators::Pair;
 
-use std::vec::Vec;
+use std::path::Path;
+use std::error::Error;
+use std::fs;
 use std::collections::HashMap;
 
 #[derive(Clone, Debug, Eq, PartialEq, Hash)]
 pub struct Identifier {
-    name: String,
+    pub name: String,
 }
 
 #[derive(Clone, Debug)]
 pub struct Module {
-    module: ModuleInformation,
+    pub module: ModuleInformation,
-    declaration: Vec<Declaration>
+    pub declaration: HashMap<Identifier, Declaration>
 }
 
 #[derive(Clone, Debug)]
@@ -363,10 +366,16 @@ pub fn parse_module(parsed: Pair<Rule>) -> Option<Module> {
     let module = p.next()?;
     let module_info = parse_module_declaration(module)?;
 
-    let mut declaration_list = Vec::new();
+    let mut declaration_list = HashMap::new();
     while let Some(declaration) = p.next() {
+        if declaration.as_rule() == Rule::EOI {
+            continue
+        }
         let declare = parse_declaration(declaration);
-        declaration_list.push(declare);
+        match declare {
+            Declaration::Type(ref id, _) => declaration_list.insert(id.clone(), declare),
+            Declaration::Variable(ref id, _, _) => declaration_list.insert(id.clone(), declare),
+        };
     }
 
     Some(Module {
@@ -374,3 +383,16 @@ pub fn parse_module(parsed: Pair<Rule>) -> Option<Module> {
         declaration: declaration_list,
     })
 }
+
+pub fn parse_file<P: AsRef<Path>>(file: P) -> Result<Module, Box<dyn Error>> {
+    let input = fs::read_to_string(file).expect("cannot read file");
+
+    let parsed = AlbireoParser::parse(Rule::program, &input)
+        .expect("file format is wrong or the parser is wrong")
+        .next()
+        .expect("cannot parse input file as a Albireo program");
+
+    let module = parse_module(parsed)
+        .ok_or("Cannot parse module completely")?;
+    Ok(module)
+}

executor/Cargo.toml

@@ -0,0 +1,7 @@
+[package]
+name = "executor"
+version = "0.1.0"
+edition = "2021"
+
+[dependencies]
+albireo = { path = "../albireo" }

executor/src/errors.rs

@@ -0,0 +1,22 @@
+use std::fmt;
+
+pub type Result<T> = std::result::Result<T, ExecutionError>;
+
+#[derive(Debug)]
+pub enum ExecutionError {
+  MainNotFound,
+  MainSignatureIncorrect,
+}
+
+impl std::error::Error for ExecutionError {}
+
+impl fmt::Display for ExecutionError {
+  fn fmt(&self, f: &mut fmt::Formatter) -> fmt::Result {
+    match self {
+      ExecutionError::MainNotFound =>
+        write!(f, "main function not found"),
+      ExecutionError::MainSignatureIncorrect =>
+        write!(f, "main function signature is incorrect, expecting Fn([], T) for any output type T"),
+    }
+  }
+}

executor/src/lib.rs

@@ -0,0 +1,23 @@
+pub mod errors;
+
+use errors::{Result, ExecutionError};
+
+use albireo::{Expression, Type, Identifier, Module, Declaration};
+
+// TODO: accepting a module map not a module
+pub fn run_program(module: Module) -> Result<()> {
+    let main = module.declaration.get(&Identifier { name: "main".into() })
+        .ok_or(ExecutionError::MainNotFound)?;
+
+    // expecting main to be function receiving no parameter
+    if let Declaration::Variable(_, Type::Function(input, _), _) = main {
+        if input.len() != 0 {
+            return Err(ExecutionError::MainSignatureIncorrect)
+        }
+    } else {
+        return Err(ExecutionError::MainSignatureIncorrect)
+    };
+
+    println!("main {:?}", main);
+    Ok(())
+}

src/main.rs

@@ -1,18 +1,19 @@
-mod albireo;
+use albireo::parse_file;
+use executor::run_program;
 
-use crate::albireo::{AlbireoParser, Rule, parse_module};
+use std::error::Error;
 
-use std::fs;
+fn main() -> Result<(), Box<dyn Error>> {
-use pest::Parser;
+    let module = parse_file("test/simple/main.air")?;
-
-fn main() {
-    let input = fs::read_to_string("test/simple/main.air").expect("cannot read file");
-
-    let parsed = AlbireoParser::parse(Rule::program, &input)
-        .expect("file format is wrong or the parser is wrong")
-        .next()
-        .expect("cannot parse input file as a Albireo program");
-
-    let module = parse_module(parsed);
     println!("{:?}", module);
+    match run_program(module) {
+        Ok(_) => {
+            println!("program executed successfully");
+            Ok(())
+        },
+        Err(e) => {
+            println!("program executed with error: {}", e);
+            Err(Box::new(e))
+        }
+    }
 }

test/simple/main.air

@@ -54,3 +54,7 @@ bruh2 : fn bool => number = function cond is
   else
     function x is x + 2
   )(0)
+
+
+main : fn => number = function is
+  1