Restructure and compartmentalize the project

Cargo.toml

@@ -1,8 +1,7 @@
 [workspace]
 members = [
-	"codegen-luajit",
-	"codegen-luau",
+	"codegen/luajit",
+	"codegen/luau",
 	"dev-test",
-	"wasm-ast",
-	"wasm-synth"
+	"wasm-ast"
 ]

codegen-luau/src/lib.rs

@@ -1,12 +0,0 @@
-pub static RUNTIME: &str = concat!(
-	"local I64 = (function() ",
-	include_str!("../runtime/numeric.lua"),
-	" end)()\n",
-	include_str!("../runtime/runtime.lua")
-);
-
-pub use translator::{from_inst_list, from_module_typed, from_module_untyped};
-
-mod analyzer;
-mod backend;
-mod translator;

codegen/luajit/Cargo.toml

@@ -4,8 +4,11 @@ version = "0.8.0"
 edition = "2021"
 
 [dependencies.wasm-ast]
-path = "../wasm-ast"
+path = "../../wasm-ast"
 
 [dependencies.parity-wasm]
 git = "https://github.com/paritytech/parity-wasm.git"
 features = ["multi_value", "sign_ext"]
+
+[[bin]]
+name = "wasm2luajit"

codegen/luajit/src/bin/wasm2luajit.rs

@@ -0,0 +1,34 @@
+use std::io::{Result, Write};
+
+use parity_wasm::{deserialize_file, elements::Module};
+
+fn load_module(name: &str) -> Module {
+	deserialize_file(name)
+		.expect("Failed to parse WebAssembly file")
+		.parse_names()
+		.unwrap_or_else(|v| v.1)
+}
+
+fn do_runtime(lock: &mut dyn Write) -> Result<()> {
+	let runtime = codegen_luajit::RUNTIME;
+
+	writeln!(lock, "local rt = (function()")?;
+	writeln!(lock, "{runtime}")?;
+	writeln!(lock, "end)()")
+}
+
+fn main() -> Result<()> {
+	let wasm = match std::env::args().nth(1) {
+		Some(name) => load_module(&name),
+		None => {
+			eprintln!("usage: wasm2luajit <file>");
+
+			return Ok(());
+		}
+	};
+
+	let lock = &mut std::io::stdout().lock();
+
+	do_runtime(lock)?;
+	codegen_luajit::from_module_untyped(&wasm, lock)
+}

codegen/luau/Cargo.toml

@@ -4,8 +4,11 @@ version = "0.5.0"
 edition = "2021"
 
 [dependencies.wasm-ast]
-path = "../wasm-ast"
+path = "../../wasm-ast"
 
 [dependencies.parity-wasm]
 git = "https://github.com/paritytech/parity-wasm.git"
 features = ["multi_value", "sign_ext"]
+
+[[bin]]
+name = "wasm2luau"

codegen/luau/src/bin/wasm2luau.rs

@@ -0,0 +1,38 @@
+use std::io::{Result, Write};
+
+use parity_wasm::{deserialize_file, elements::Module};
+
+fn load_module(name: &str) -> Module {
+	deserialize_file(name)
+		.expect("Failed to parse WebAssembly file")
+		.parse_names()
+		.unwrap_or_else(|v| v.1)
+}
+
+fn do_runtime(lock: &mut dyn Write) -> Result<()> {
+	let runtime = codegen_luau::RUNTIME;
+	let numeric = codegen_luau::NUMERIC;
+
+	writeln!(lock, "local rt = (function()")?;
+	writeln!(lock, "local I64 = (function()")?;
+	writeln!(lock, "{numeric}")?;
+	writeln!(lock, "end)()")?;
+	writeln!(lock, "{runtime}")?;
+	writeln!(lock, "end)()")
+}
+
+fn main() -> Result<()> {
+	let wasm = match std::env::args().nth(1) {
+		Some(name) => load_module(&name),
+		None => {
+			eprintln!("usage: wasm2luau <file>");
+
+			return Ok(());
+		}
+	};
+
+	let lock = &mut std::io::stdout().lock();
+
+	do_runtime(lock)?;
+	codegen_luau::from_module_untyped(&wasm, lock)
+}

codegen/luau/src/lib.rs

@@ -0,0 +1,8 @@
+pub static RUNTIME: &str = include_str!("../runtime/runtime.lua");
+pub static NUMERIC: &str = include_str!("../runtime/numeric.lua");
+
+pub use translator::{from_inst_list, from_module_typed, from_module_untyped};
+
+mod analyzer;
+mod backend;
+mod translator;

dev-test/Cargo.toml

@@ -10,8 +10,8 @@ cargo-fuzz = true
 [dependencies]
 libfuzzer-sys = "0.4"
 wasm-smith = "0.8.0"
-codegen-luajit = { path = "../codegen-luajit" }
-codegen-luau = { path = "../codegen-luau" }
+codegen-luajit = { path = "../codegen/luajit" }
+codegen-luau = { path = "../codegen/luau" }
 
 [dependencies.parity-wasm]
 git = "https://github.com/paritytech/parity-wasm.git"

dev-test/tests/luajit_translate.rs

@@ -134,7 +134,10 @@ impl Target for LuaJIT {
 	fn write_runtime(w: &mut dyn Write) -> Result<()> {
 		let runtime = codegen_luajit::RUNTIME;
 
-		writeln!(w, "local rt = (function() {runtime} end)()")?;
+		writeln!(w, "local rt = (function()")?;
+		writeln!(w, "{runtime}")?;
+		writeln!(w, "end)()")?;
+
 		writeln!(w, "{ASSERTION}")
 	}
 

dev-test/tests/luau_translate.rs

@@ -146,8 +146,15 @@ impl Target for Luau {
 
 	fn write_runtime(w: &mut dyn Write) -> Result<()> {
 		let runtime = codegen_luau::RUNTIME;
+		let numeric = codegen_luau::NUMERIC;
+
+		writeln!(w, "local rt = (function()")?;
+		writeln!(w, "local I64 = (function()")?;
+		writeln!(w, "{numeric}")?;
+		writeln!(w, "end)()")?;
+		writeln!(w, "{runtime}")?;
+		writeln!(w, "end)()")?;
 
-		writeln!(w, "local rt = (function() {runtime} end)()")?;
 		writeln!(w, "{ASSERTION}")
 	}
 

wasm-synth/Cargo.toml

@@ -1,14 +0,0 @@
-[package]
-name = "wasm-synth"
-version = "0.5.0"
-edition = "2021"
-
-[dependencies.parity-wasm]
-git = "https://github.com/paritytech/parity-wasm.git"
-features = ["multi_value", "sign_ext"]
-
-[dependencies.codegen-luajit]
-path = "../codegen-luajit"
-
-[dependencies.codegen-luau]
-path = "../codegen-luau"

wasm-synth/src/main.rs

@@ -1,57 +0,0 @@
-use std::io::{Result, Write};
-
-use parity_wasm::{deserialize_file, elements::Module};
-
-type FromUntyped = fn(&Module, &mut dyn Write) -> Result<()>;
-
-fn run_with(file: &str, runtime: &str, from_untyped: FromUntyped) -> Result<()> {
-	let wasm = deserialize_file(file)
-		.expect("Failed to parse Wasm file")
-		.parse_names()
-		.unwrap_or_else(|v| v.1);
-
-	let lock = &mut std::io::stdout().lock();
-
-	write!(lock, "local rt = (function() {runtime} end)() ")?;
-	from_untyped(&wasm, lock)
-}
-
-fn do_translate(lang: &str, file: &str) {
-	let result = match lang.to_lowercase().as_str() {
-		"luajit" => run_with(
-			file,
-			codegen_luajit::RUNTIME,
-			codegen_luajit::from_module_untyped,
-		),
-		"luau" => run_with(
-			file,
-			codegen_luau::RUNTIME,
-			codegen_luau::from_module_untyped,
-		),
-		_ => panic!("Bad language: {lang}"),
-	};
-
-	result.expect("Failed to translate file");
-}
-
-fn do_help() {
-	println!("usage: program to <lang> <file>");
-	println!("  or:  program help");
-}
-
-fn main() {
-	let mut args = std::env::args().skip(1);
-
-	match args.next().as_deref().unwrap_or("help") {
-		"help" => do_help(),
-		"to" => {
-			let lang = args.next().expect("No language specified");
-			let file = args.next().expect("No file specified");
-
-			do_translate(&lang, &file);
-		}
-		bad => {
-			eprintln!("Bad action `{bad}`; try `help`");
-		}
-	}
-}