refactor: split project into multiple crates

Cargo.toml

@@ -1,34 +1,13 @@
-[package]
+[workspace]
-name = "lilac"
+resolver = "3"
+members = [
+  "lila",
+  "lila-ast",
+  "lila-checking",
+  "lila-cli",
+  "lila-jit",
+  "lila-parsing",
+]
+
+[workspace.package]
 version = "0.0.1"
-edition = "2021"
-
-[features]
-default = ["pest"]
-pest = ["dep:pest", "dep:pest_derive"]
-tree-sitter = ["dep:tree-sitter", "dep:tree-sitter-lila"]
-
-[dependencies]
-clap = { version = "4.5.7", features = ["derive"] }
-cranelift = "0.109.0"
-cranelift-jit = "0.109.0"
-cranelift-module = "0.109.0"
-cranelift-native = "0.109.0"
-lazy_static = "1.4.0"
-pest = { version = "2.7.4", optional = true }
-pest_derive = { version = "2.7.4", optional = true }
-tree-sitter = { version = "0.22", optional = true }
-ariadne = "0.4.1"
-anyhow = "1.0.86"
-
-[dependencies.tree-sitter-lila]
-version = "0.0.1"
-optional = true
-git = "https://git.sr.ht/~rpqt/tree-sitter-lila"
-branch = "main"
-
-[dev-dependencies]
-pretty_assertions = "1.4.0"
-
-[build-dependencies]
-cc = "*"

flake.nix

@@ -26,10 +26,15 @@
         let
           craneLib = crane.mkLib pkgs;
 
-          pestFilter = path: _type: (builtins.match ".*\.pest$" path) != null;
+          sourceFilter =
-          sourceFilter = path: type: (craneLib.filterCargoSources path type) || (pestFilter path type);
+            path: type:
+            builtins.any (suffix: lib.hasSuffix suffix path) [
+              ".pest"
+            ]
+            || (craneLib.filterCargoSources path type);
 
           lilac-crate = craneLib.buildPackage ({
+            pname = "lilac";
             src = lib.cleanSourceWith {
               src = ./.;
               filter = sourceFilter;

lila-ast/Cargo.toml

@@ -0,0 +1,10 @@
+[package]
+name = "lila-ast"
+version = "0.0.1"
+edition = "2021"
+
+[features]
+ariadne = [ "dep:ariadne" ]
+
+[dependencies]
+ariadne = { version = "0.4.1", optional = true }

lila-ast/src/expr.rs

@@ -1,5 +1,5 @@
-use crate::ast::*;
 use crate::typing::Type;
+use crate::*;
 
 #[derive(Debug, PartialEq)]
 pub struct SExpr {

lila-ast/src/lib.rs

@@ -1,10 +1,10 @@
 pub mod expr;
+pub mod typing;
 
 pub use expr::{BinaryExpression, Expr, SExpr};
 
 use crate::typing::Type;
 
-use ariadne;
 use std::{fmt::Display, path::Path};
 
 #[derive(Debug, PartialEq, Clone)]
@@ -54,6 +54,7 @@ pub struct Span {
     pub end: usize,
 }
 
+#[cfg(feature = "ariadne")]
 impl ariadne::Span for Span {
     type SourceId = SourceId;
 

lila-ast/src/typing/error.rs

@@ -0,0 +1,56 @@
+use std::fmt::Debug;
+
+use crate::{BinaryOperator, Identifier, ModulePath, Span, Type, UnaryOperator};
+
+#[derive(Debug, PartialEq)]
+pub struct TypeError {
+    pub file: Option<std::path::PathBuf>,
+    pub module: ModulePath,
+    pub function: Option<String>,
+    pub kind: TypeErrorKind,
+}
+
+#[derive(PartialEq, Debug)]
+pub struct TypeAndSpan {
+    pub ty: Type,
+    pub span: Span,
+}
+
+#[derive(PartialEq, Debug)]
+pub struct BinOpAndSpan {
+    pub op: BinaryOperator,
+    pub span: Span,
+}
+
+#[derive(Debug, PartialEq)]
+pub enum TypeErrorKind {
+    InvalidBinaryOperator {
+        operator: BinOpAndSpan,
+        lhs: TypeAndSpan,
+        rhs: TypeAndSpan,
+    },
+    BlockTypeDoesNotMatchFunctionType {
+        block_type: Type,
+    },
+    ReturnTypeDoesNotMatchFunctionType {
+        return_expr: Option<TypeAndSpan>,
+        return_stmt: TypeAndSpan,
+    },
+    UnknownIdentifier {
+        identifier: String,
+    },
+    AssignmentMismatch {
+        lht: Type,
+        rht: Type,
+    },
+    AssignUndeclared,
+    VariableRedeclaration,
+    UnknownFunctionCalled(Identifier),
+    WrongFunctionArguments,
+    ConditionIsNotBool,
+    IfElseMismatch,
+    InvalidUnaryOperator {
+        operator: UnaryOperator,
+        inner: Type,
+    },
+}

lila-ast/src/typing/mod.rs

@@ -0,0 +1,73 @@
+pub mod error;
+
+use crate::{FunctionDefinition, Identifier};
+use std::fmt::Display;
+
+#[derive(Debug, PartialEq, Clone)]
+pub enum Type {
+    /// Not a real type, used for parsing pass
+    Undefined,
+    Bool,
+    Int,
+    Float,
+    Unit,
+    Str,
+    Function {
+        params: Vec<Type>,
+        returns: Box<Type>,
+    },
+    Custom(Identifier),
+}
+
+impl Display for Type {
+    fn fmt(&self, f: &mut std::fmt::Formatter<'_>) -> std::fmt::Result {
+        match self {
+            Type::Undefined => f.write_str("UNDEFINED"),
+            Type::Bool => f.write_str("Bool"),
+            Type::Int => f.write_str("Int"),
+            Type::Float => f.write_str("Float"),
+            Type::Unit => f.write_str("Unit"),
+            Type::Str => f.write_str("Str"),
+            Type::Custom(identifier) => f.write_str(identifier),
+            Type::Function { params, returns } => {
+                f.write_str("Fn(")?;
+                for param in params {
+                    f.write_fmt(format_args!("{param}, "))?;
+                }
+                f.write_str(") -> ")?;
+                f.write_fmt(format_args!("{returns}"))
+            }
+        }
+    }
+}
+
+impl From<&str> for Type {
+    fn from(value: &str) -> Self {
+        match value {
+            "int" => Type::Int,
+            "float" => Type::Float,
+            "bool" => Type::Bool,
+            _ => Type::Custom(Identifier::from(value)),
+        }
+    }
+}
+
+#[derive(Debug, PartialEq, Clone)]
+pub struct Signature(pub Vec<Type>, pub Type);
+
+impl From<Signature> for Type {
+    fn from(val: Signature) -> Self {
+        Type::Function {
+            params: val.0,
+            returns: Box::new(val.1),
+        }
+    }
+}
+
+impl FunctionDefinition {
+    pub fn signature(&self) -> Signature {
+        let return_type = self.return_type.clone().unwrap_or(Type::Unit);
+        let params_types = self.parameters.iter().map(|p| p.typ.clone()).collect();
+        Signature(params_types, return_type)
+    }
+}

lila-checking/Cargo.toml

@@ -0,0 +1,11 @@
+[package]
+name = "lila-checking"
+version = "0.0.1"
+edition = "2021"
+
+[dependencies]
+lila-ast = { path = "../lila-ast" }
+
+[dev-dependencies]
+lila-parsing = { path = "../lila-parsing" }
+pretty_assertions = "1.4.0"

lila-checking/src/lib.rs

@@ -1,87 +1,21 @@
-mod error;
-
-use crate::ast::*;
-use crate::typing::error::{TypeAndSpan, TypeError, TypeErrorKind};
 use std::collections::HashMap;
-use std::fmt::Display;
+
+use lila_ast::typing::error::{BinOpAndSpan, TypeAndSpan, TypeError, TypeErrorKind};
+use lila_ast::typing::{Signature, Type};
+use lila_ast::*;
 
 #[cfg(test)]
 mod tests;
 
-#[derive(Debug, PartialEq, Clone)]
-pub enum Type {
-    /// Not a real type, used for parsing pass
-    Undefined,
-    Bool,
-    Int,
-    Float,
-    Unit,
-    Str,
-    Function {
-        params: Vec<Type>,
-        returns: Box<Type>,
-    },
-    Custom(Identifier),
-}
-
-impl Display for Type {
-    fn fmt(&self, f: &mut std::fmt::Formatter<'_>) -> std::fmt::Result {
-        match self {
-            Type::Undefined => f.write_str("UNDEFINED"),
-            Type::Bool => f.write_str("Bool"),
-            Type::Int => f.write_str("Int"),
-            Type::Float => f.write_str("Float"),
-            Type::Unit => f.write_str("Unit"),
-            Type::Str => f.write_str("Str"),
-            Type::Custom(identifier) => f.write_str(identifier),
-            Type::Function { params, returns } => {
-                f.write_str("Fn(")?;
-                for param in params {
-                    f.write_fmt(format_args!("{}, ", param))?;
-                }
-                f.write_str(") -> ")?;
-                f.write_fmt(format_args!("{}", returns))
-            }
-        }
-    }
-}
-
-impl From<&str> for Type {
-    fn from(value: &str) -> Self {
-        match value {
-            "int" => Type::Int,
-            "float" => Type::Float,
-            "bool" => Type::Bool,
-            _ => Type::Custom(Identifier::from(value)),
-        }
-    }
-}
-
-#[derive(Debug, PartialEq, Clone)]
-pub struct Signature(Vec<Type>, Type);
-
-impl From<Signature> for Type {
-    fn from(val: Signature) -> Self {
-        Type::Function {
-            params: val.0,
-            returns: Box::new(val.1),
-        }
-    }
-}
-
-impl FunctionDefinition {
-    fn signature(&self) -> Signature {
-        let return_type = self.return_type.clone().unwrap_or(Type::Unit);
-        let params_types = self.parameters.iter().map(|p| p.typ.clone()).collect();
-        Signature(params_types, return_type)
-    }
-}
-
 #[derive(Debug, PartialEq)]
 pub struct CheckedModule(pub Module);
 
-impl Module {
+pub trait TypeCheckModule {
-    pub fn type_check(&mut self) -> Result<(), Vec<TypeError>> {
+    fn type_check(&mut self) -> Result<(), Vec<TypeError>>;
+}
+
+impl TypeCheckModule for Module {
+    fn type_check(&mut self) -> Result<(), Vec<TypeError>> {
         let mut ctx = TypingContext::new(self.path.clone());
         ctx.file.clone_from(&self.file);
 
@@ -325,7 +259,7 @@ impl TypeCheck for Expr {
                 typ,
                 op_span,
             }) => {
-                let operator = error::BinOpAndSpan {
+                let operator = BinOpAndSpan {
                     op: op.clone(),
                     span: *op_span,
                 };

lila-checking/src/tests.rs

@@ -1,11 +1,7 @@
-use crate::{
+use crate::TypeCheckModule;
-    ast::ModulePath,
+use lila_ast::typing::{error::*, Type};
-    parsing::{DefaultParser, Parser},
+use lila_ast::ModulePath;
-    typing::error::*,
+use lila_parsing::{DefaultParser, Parser};
-    typing::*,
-};
-
-#[cfg(test)]
 use pretty_assertions::assert_eq;
 
 #[test]

lila-cli/Cargo.toml

@@ -0,0 +1,22 @@
+[package]
+name = "lila-cli"
+version = "0.0.1"
+edition = "2021"
+
+[dependencies]
+anyhow = "1.0.86"
+ariadne = "0.4.1"
+clap = { version = "4.5.7", features = ["derive"] }
+lila = { path = "../lila" }
+lila-ast = { path = "../lila-ast", features = ["ariadne"] }
+lila-checking = { path = "../lila-checking" }
+lila-jit = { path = "../lila-jit" }
+lila-parsing = { path = "../lila-parsing" }
+
+[dev-dependencies]
+pretty_assertions = "1.4.0"
+
+[[bin]]
+name = "lilac"
+path = "src/main.rs"
+

lila-cli/src/main.rs

@@ -1,18 +1,15 @@
-pub mod ast;
-pub mod jit;
-pub mod parsing;
-pub mod source;
-pub mod typing;
-
 use std::default::Default;
 use std::io::Write as _;
 use std::path::PathBuf;
 
 use clap::{Parser as ClapParser, Subcommand};
 
-use crate::ast::Module;
+use lila::report::ToReport;
-use crate::parsing::Parser;
+use lila::source::SourceCache;
-use crate::source::SourceCache;
+use lila_ast::Module;
+use lila_checking::TypeCheckModule;
+use lila_jit as jit;
+use lila_parsing::{DefaultParser as LilaParser, Parser as _};
 
 /// Experimental compiler for lila
 #[derive(ClapParser, Debug)]
@@ -59,13 +56,13 @@ enum Commands {
 }
 
 fn parse(files: &[String]) -> Vec<Module> {
-    let mut parser = parsing::DefaultParser::default();
+    let mut parser = LilaParser::default();
     let paths = files.iter().map(std::path::Path::new);
     paths
         .enumerate()
         .map(|(i, path)| match parser.parse_file(path, i as u32) {
             Ok(module) => module,
-            Err(e) => panic!("Parsing error: {:#?}", e),
+            Err(e) => panic!("Parsing error: {e:#?}"),
         })
         .collect()
 }

lila-jit/Cargo.toml

@@ -0,0 +1,15 @@
+[package]
+name = "lila-jit"
+version = "0.0.1"
+edition = "2021"
+
+[dependencies]
+ariadne = "0.4.1" # TODO: use ariadne only in CLI
+cranelift = "0.109.0"
+cranelift-jit = "0.109.0"
+cranelift-module = "0.109.0"
+cranelift-native = "0.109.0"
+lila = { path = "../lila" }
+lila-ast = { path = "../lila-ast", features = ["ariadne"] } # TODO: don't include ariadne feature
+lila-checking = { path = "../lila-checking" }
+lila-parsing = { path = "../lila-parsing" }

lila-jit/src/lib.rs

@@ -1,16 +1,17 @@
-use crate::{
-    ast::{
-        self, expr::BinaryExpression, BinaryOperator, Expr, FunctionDefinition, ModulePath,
-        ReturnStatement, SourceId, Statement, UnaryOperator,
-    },
-    parsing::{DefaultParser, Parser},
-    typing::Type,
-    SourceCache,
-};
 use ariadne::Cache as _;
 use cranelift::{codegen::ir::UserFuncName, prelude::*};
 use cranelift_jit::{JITBuilder, JITModule};
 use cranelift_module::{DataDescription, FuncId, FuncOrDataId, Linkage, Module};
+use lila::report::ToReport as _;
+use lila::source::SourceCache;
+use lila_ast as ast;
+use lila_ast::typing::{self, Type};
+use lila_ast::{
+    expr::BinaryExpression, BinaryOperator, Expr, FunctionDefinition, ModulePath, ReturnStatement,
+    SourceId, Statement, UnaryOperator,
+};
+use lila_checking::TypeCheckModule as _;
+use lila_parsing::{DefaultParser, Parser};
 use std::collections::HashMap;
 
 /// The basic JIT class.
@@ -44,7 +45,7 @@ impl Default for JIT {
         flag_builder.set("is_pic", "false").unwrap();
 
         let isa_builder = cranelift_native::builder().unwrap_or_else(|msg| {
-            panic!("host machine is not supported: {}", msg);
+            panic!("host machine is not supported: {msg}");
         });
 
         let isa = isa_builder
@@ -137,12 +138,12 @@ impl JIT {
 
             for param in &func.parameters {
                 assert_ne!(param.typ, Type::Unit);
-                sig.params.append(&mut Vec::from(&param.typ));
+                sig.params.append(&mut to_abi_params(&param.typ));
             }
 
             if let Some(return_type) = &func.return_type {
                 if *return_type != Type::Unit {
-                    sig.returns = return_type.into();
+                    sig.returns = to_abi_params(return_type);
                 }
             };
 
@@ -235,15 +236,13 @@ impl JIT {
     }
 }
 
-impl From<&Type> for Vec<AbiParam> {
+fn to_abi_params(value: &Type) -> Vec<AbiParam> {
-    fn from(value: &Type) -> Self {
     match value {
         Type::Bool => vec![AbiParam::new(types::I8)],
         Type::Int => vec![AbiParam::new(types::I32)],
         Type::Float => vec![AbiParam::new(types::F32)],
         _ => unimplemented!(),
     }
-    }
 }
 
 /// A collection of state used for translating from AST nodes

lila-parsing/Cargo.toml

@@ -0,0 +1,29 @@
+[package]
+name = "lila-parsing"
+version = "0.0.1"
+edition = "2021"
+
+[features]
+default = ["pest"]
+pest = ["dep:pest", "dep:pest_derive", "dep:lazy_static"]
+tree-sitter = ["dep:tree-sitter", "dep:tree-sitter-lila"]
+
+[dependencies]
+anyhow = "1.0.86"
+lazy_static = { version = "1.4.0", optional = true }
+lila-ast = { path = "../lila-ast" }
+pest = { version = "2.7.4", optional = true }
+pest_derive = { version = "2.7.4", optional = true }
+tree-sitter = { version = "0.22", optional = true }
+
+[dependencies.tree-sitter-lila]
+version = "0.0.1"
+optional = true
+git = "https://git.sr.ht/~rpqt/tree-sitter-lila"
+branch = "main"
+
+[build-dependencies]
+cc = "*"
+
+[dev-dependencies]
+pretty_assertions = "1.4.0"

lila-parsing/src/backend/pest/mod.rs

@@ -1,14 +1,12 @@
-use expr::BinaryExpression;
+use lila_ast::typing::Type;
 use pest::iterators::Pair;
 use pest::pratt_parser::PrattParser;
 use pest::Parser as PestParser;
-use ReturnStatement;
 
-use crate::ast::*;
+use lila_ast::*;
-use crate::typing::Type;
 
 #[derive(pest_derive::Parser)]
-#[grammar = "parsing/backend/pest/grammar.pest"]
+#[grammar = "src/backend/pest/grammar.pest"]
 struct LilaParser;
 
 use lazy_static;
@@ -34,7 +32,7 @@ pub struct Parser {
     source: SourceId,
 }
 
-impl crate::parsing::Parser for Parser {
+impl crate::Parser for Parser {
     fn parse_as_module(
         &mut self,
         source: &str,

lila-parsing/src/lib.rs

@@ -1,7 +1,7 @@
 mod backend;
 mod tests;
 
-use crate::ast::{Module, ModulePath, SourceId};
+use lila_ast::{Module, ModulePath, SourceId};
 
 pub trait Parser: Default {
     fn parse_file(&mut self, path: &std::path::Path, id: SourceId) -> anyhow::Result<Module> {

lila-parsing/src/tests.rs

@@ -3,9 +3,9 @@ use pretty_assertions::assert_eq;
 
 #[test]
 fn test_addition_function() {
-    use crate::ast::*;
+    use crate::*;
-    use crate::parsing::*;
+    use lila_ast::typing::*;
-    use crate::typing::*;
+    use lila_ast::*;
 
     let source = "fn add(a: int, b: int) int { a + b }";
     let path = ModulePath::from("test");

lila/Cargo.toml

@@ -0,0 +1,8 @@
+[package]
+name = "lila"
+version = "0.0.1"
+edition = "2021"
+
+[dependencies]
+ariadne = "0.4.1" # TODO: only CLI should use ariadne
+lila-ast = { path = "../lila-ast" }

lila/src/lib.rs

@@ -0,0 +1,2 @@
+pub mod report;
+pub mod source;

lila/src/report.rs

@@ -1,64 +1,14 @@
 use ariadne::{ColorGenerator, Fmt, Label, Report, ReportKind, Span as _};
-use std::fmt::Debug;
+use lila_ast::typing::error::{TypeError, TypeErrorKind};
+use lila_ast::typing::Type;
+use lila_ast::{Module, Span};
 
-use super::{Span, UnaryOperator};
+pub trait ToReport {
-use crate::typing::{BinaryOperator, Identifier, ModulePath, Type};
+    fn to_report(&self, ast: &Module) -> Report<Span>;
-
-#[derive(Debug, PartialEq)]
-pub struct TypeError {
-    pub file: Option<std::path::PathBuf>,
-    pub module: ModulePath,
-    pub function: Option<String>,
-    pub kind: TypeErrorKind,
 }
 
-#[derive(PartialEq, Debug)]
+impl ToReport for TypeError {
-pub struct TypeAndSpan {
+    fn to_report(&self, ast: &Module) -> Report<Span> {
-    pub ty: Type,
-    pub span: Span,
-}
-
-#[derive(PartialEq, Debug)]
-pub struct BinOpAndSpan {
-    pub op: BinaryOperator,
-    pub span: Span,
-}
-
-#[derive(Debug, PartialEq)]
-pub enum TypeErrorKind {
-    InvalidBinaryOperator {
-        operator: BinOpAndSpan,
-        lhs: TypeAndSpan,
-        rhs: TypeAndSpan,
-    },
-    BlockTypeDoesNotMatchFunctionType {
-        block_type: Type,
-    },
-    ReturnTypeDoesNotMatchFunctionType {
-        return_expr: Option<TypeAndSpan>,
-        return_stmt: TypeAndSpan,
-    },
-    UnknownIdentifier {
-        identifier: String,
-    },
-    AssignmentMismatch {
-        lht: Type,
-        rht: Type,
-    },
-    AssignUndeclared,
-    VariableRedeclaration,
-    UnknownFunctionCalled(Identifier),
-    WrongFunctionArguments,
-    ConditionIsNotBool,
-    IfElseMismatch,
-    InvalidUnaryOperator {
-        operator: UnaryOperator,
-        inner: Type,
-    },
-}
-
-impl TypeError {
-    pub fn to_report(&self, ast: &crate::ast::Module) -> Report<Span> {
         let mut colors = ColorGenerator::new();
         let c0 = colors.next();
         let c1 = colors.next();
@@ -85,6 +35,7 @@ impl TypeError {
                             .with_color(c2)
                             .with_order(1),
                     ])
+                    // TODO: add hint for conversion
                     .finish()
             }
 
@@ -129,7 +80,7 @@ impl TypeError {
                 if let Some(span) = function.return_type_span {
                     report.add_label(
                         Label::new(span)
-                            .with_message(format!("The signature shows {}", func_return_type_text))
+                            .with_message(format!("The signature shows {func_return_type_text}"))
                             .with_color(signature_color),
                     );
                 }

lila/src/source.rs

@@ -1,5 +1,5 @@
-use crate::ast::SourceId;
 use ariadne::FileCache;
+use lila_ast::SourceId;
 
 pub struct SourceCache {
     pub paths: Vec<std::path::PathBuf>,