cl-parser: Move parser into its own crate

Cargo.toml

@@ -6,6 +6,7 @@ members = [
     "cl-structures",
     "cl-token",
     "cl-ast",
+    "cl-parser",
 ]
 resolver = "2"
 

cl-ast/src/lib.rs

@@ -1,5 +1,5 @@
 //! # The Abstract Syntax Tree
-//! Contains definitions of AST Nodes, to be derived by a [parser](super::parser).
+//! Contains definitions of Conlang AST Nodes.
 //!
 //! # Notable nodes
 //! - [Item] and [ItemKind]: Top-level constructs

cl-interpret/Cargo.toml

@@ -8,6 +8,10 @@ license.workspace = true
 publish.workspace = true
 
 [dependencies]
-conlang = { path = "../libconlang" }
 cl-ast = { path = "../cl-ast" }
 cl-structures = { path = "../cl-structures" }
+
+
+[dev-dependencies]
+conlang = { path = "../libconlang" }
+cl-parser = { path = "../cl-parser" }

cl-interpret/src/tests.rs

@@ -1,7 +1,8 @@
 #![allow(unused_imports)]
 use crate::{env::Environment, temp_type_impl::ConValue, Interpret};
 use cl_ast::*;
-use conlang::{lexer::Lexer, parser::Parser};
+use cl_parser::Parser;
+use conlang::lexer::Lexer;
 pub use macros::*;
 
 mod macros {

cl-parser/Cargo.toml

@@ -0,0 +1,14 @@
+[package]
+name = "cl-parser"
+repository.workspace = true
+version.workspace = true
+authors.workspace = true
+edition.workspace = true
+license.workspace = true
+publish.workspace = true
+
+[dependencies]
+cl-ast = { path = "../cl-ast" }
+cl-token = { path = "../cl-token" }
+cl-structures = { path = "../cl-structures" }
+conlang = { path = "../libconlang" }

cl-parser/src/lib.rs

@@ -1,23 +1,26 @@
-//! Parses [tokens](super::token) into an [AST](super::ast)
+//! Parses [tokens](cl_token::token) into an [AST](cl_ast)
 //!
 //! For the full grammar, see [grammar.ebnf][1]
 //!
 //! [1]: https://git.soft.fish/j/Conlang/src/branch/main/grammar.ebnf
+#![feature(decl_macro)]
 
-use self::error::{
+use cl_structures::span::*;
+use cl_token::*;
+
+use crate::error::{
     Error,
     ErrorKind::{self, *},
     PResult, Parsing,
 };
-use crate::lexer::{error::Error as LexError, Lexer};
 use cl_ast::*;
-use cl_structures::span::*;
-use cl_token::*;
+use conlang::lexer::Lexer;
 
 pub mod error {
-    use std::fmt::Display;
-
     use super::*;
+
+    use conlang::lexer::error::{Error as LexError, Reason};
+    use std::fmt::Display;
     pub type PResult<T> = Result<T, Error>;
 
     /// Contains information about [Parser] errors
@@ -49,7 +52,6 @@ pub mod error {
     }
     impl From<LexError> for ErrorKind {
         fn from(value: LexError) -> Self {
-            use crate::lexer::error::Reason;
             match value.reason() {
                 Reason::EndOfFile => Self::EndOfInput,
                 _ => Self::Lexical(value),
@@ -130,9 +132,9 @@ pub mod error {
             let Self { reason, while_parsing, loc } = self;
             match reason {
                 // TODO entries are debug-printed
-                Todo => write!(f, "{loc} {reason} {while_parsing:?}"),
+                ErrorKind::Todo => write!(f, "{loc} {reason} {while_parsing:?}"),
                 // lexical errors print their own higher-resolution loc info
-                Lexical(e) => write!(f, "{e} (while parsing {while_parsing})"),
+                ErrorKind::Lexical(e) => write!(f, "{e} (while parsing {while_parsing})"),
                 _ => write!(f, "{loc} {reason} while parsing {while_parsing}"),
             }
         }
@@ -226,6 +228,8 @@ pub mod error {
     }
 }
 
+
+/// Parses a sequence of [Tokens](Token) into an [AST](cl_ast)
 pub struct Parser<'t> {
     /// Lazy tokenizer
     lexer: Lexer<'t>,

cl-repl/Cargo.toml

@@ -12,8 +12,9 @@ publish.workspace = true
 [dependencies]
 conlang = { path = "../libconlang" }
 cl-ast = { path = "../cl-ast" }
-cl-interpret = { path = "../cl-interpret" }
 cl-token = { path = "../cl-token" }
+cl-parser = { path = "../cl-parser" }
+cl-interpret = { path = "../cl-interpret" }
 crossterm = "0.27.0"
 
 [dev-dependencies]

cl-repl/examples/collect-identifiers.rs

@@ -1,8 +1,9 @@
 //! Collects identifiers into a list
 
+use cl_parser::Parser;
 use cl_repl::repline::Repline;
 use cl_structures::span::Loc;
-use conlang::{lexer::Lexer, parser::Parser};
+use conlang::lexer::Lexer;
 use std::{
     collections::HashMap,
     error::Error,

cl-repl/src/lib.rs

@@ -74,10 +74,10 @@ pub mod program {
     };
 
     use cl_ast::{self as ast, ast_impl::format::Pretty};
+    use cl_parser::{error::PResult, Parser};
     use conlang::{
         // pretty_printer::{PrettyPrintable, Printer},
         lexer::Lexer,
-        parser::{error::PResult, Parser},
         resolver::{error::TyResult, Resolver},
     };
     use std::{fmt::Display, io::Write};
@@ -228,7 +228,7 @@ pub mod cli {
             match (repl, path) {
                 (true, Some(path)) => {
                     let prog = std::fs::read_to_string(path).unwrap();
-                    let code = conlang::parser::Parser::new(conlang::lexer::Lexer::new(&prog))
+                    let code = cl_parser::Parser::new(conlang::lexer::Lexer::new(&prog))
                         .file()
                         .unwrap();
                     let mut env = cl_interpret::env::Environment::new();

libconlang/Cargo.toml

@@ -14,5 +14,5 @@ repository.workspace = true
 [dependencies]
 unicode-xid = "0.2.4"
 cl-ast = { path = "../cl-ast" }
-cl-structures = { path = "../cl-structures" }
 cl-token = { path = "../cl-token" }
+cl-structures = { path = "../cl-structures" }

libconlang/src/lib.rs

@@ -4,8 +4,6 @@
 
 pub mod lexer;
 
-pub mod parser;
-
 pub mod resolver;
 
 #[cfg(test)]