diff --git a/.gitignore b/.gitignore index 32fc6a5..0b01ec6 100644 --- a/.gitignore +++ b/.gitignore @@ -1,5 +1,6 @@ /target - +node_modules +*.wasm #Added by cargo # diff --git a/Cargo.lock b/Cargo.lock index fe72258..089e9cd 100644 --- a/Cargo.lock +++ b/Cargo.lock @@ -39,6 +39,12 @@ version = "1.4.0" source = "registry+https://github.com/rust-lang/crates.io-index" checksum = "e2abad23fbc42b3700f2f279844dc832adb2b2eb069b2df918f455c4e18cc646" +[[package]] +name = "leb128" +version = "0.2.4" +source = "registry+https://github.com/rust-lang/crates.io-index" +checksum = "3576a87f2ba00f6f106fdfcd16db1d698d648a26ad8e0573cad8537c3c362d2a" + [[package]] name = "lexical-core" version = "0.7.4" @@ -77,6 +83,7 @@ dependencies = [ "regex", "ron", "serde", + "wat", ] [[package]] @@ -189,3 +196,21 @@ name = "version_check" version = "0.9.2" source = "registry+https://github.com/rust-lang/crates.io-index" checksum = "b5a972e5669d67ba988ce3dc826706fb0a8b01471c088cb0b6110b805cc36aed" + +[[package]] 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self.subnodes[1].emit(f)?; - write!(f, "i64.add\n") + write!(f, "i32.add\n") } Program => { write!(f, "(module\n")?; + let mut exported = vec![]; for node in &self.subnodes { node.emit(f)?; + if node.kind == FunctionDefinition { + exported.push(node.value.clone()); + } + } + for export in exported { + write!(f, "(export \"{0}\" (func ${0}))\n", export)?; } write!(f, ")") } + FunctionDefinition => { + write!(f, "(func ${}", self.value)?; + // let body = self.subnodes[0]; + for a in &self.subnodes[1..] { + write!(f, " (param ${} i32)", a.value)?; + } + write!(f, " (result i32)\n")?; + self.subnodes[0].emit(f)?; + write!(f, ")\n") + } + Block => { + for node in &self.subnodes { + node.emit(f)?; + } + write!(f, "") + } + FunctionReturn => self.subnodes[0].emit(f), _ => Ok(()), } } diff --git a/src/main.rs b/src/main.rs index d875eef..ad6dd90 100644 --- a/src/main.rs +++ b/src/main.rs @@ -1,5 +1,16 @@ -fn main() { - let src = r#"function add(left, right) { return 5; }"#; +extern crate wat; + +use std::fs::File; +use std::io::prelude::*; + +fn main() -> std::io::Result<()> { + let src = r#"function add(left, right) { return left + right; }"#; let ast = pivot::parse(src); - println!("{}", ast); + // println!("{}", ast); + let mut code = String::new(); + ast.emit(&mut code); + println!("{}", code); + let binary = wat::parse_str(code).unwrap(); + let mut file = File::create("out.wasm")?.write_all(&binary)?; + Ok(()) } diff --git a/src/parse/mod.rs b/src/parse/mod.rs index 76c02c8..3c96e34 100644 --- a/src/parse/mod.rs +++ b/src/parse/mod.rs @@ -153,21 +153,35 @@ fn parse_statement(src: String) -> Result<(String, String), String> { .and(IDENTIFIER.clone()) .and( LEFT_PAREN.clone().ignore() - .and(args.clone()) + .and(args.clone().optional()) .and(RIGHT_PAREN.clone().ignore()) ) .and(block_statement.clone()) .map(|matched| { let data = from_str::>(&matched)?; + for d in &data { + println!("{}", d); + } let body = from_str::(&data[1])?; + println!("body: {}", body); let data = from_str::>(&data[0])?; + for d in &data { + println!("{}", d); + } let name = from_str::(&data[0])?.value; + println!("name: {}", name); let params = from_str::>(&data[1])?; let mut parameters = vec![]; - for p in params { + for p in from_str::>(¶ms[0])? { parameters.push(from_str::(&p)?); } + println!("{:?}", parameters); Ok(to_string(&AstNode::function_definition(name, parameters, body))?) + }) + .map(|matched| { + let function_definition = from_str::(&matched)?; + println!("{}", function_definition); + Ok(matched) }); return_statement.clone() .or(if_statement.clone()) diff --git a/test.js b/test.js new file mode 100644 index 0000000..8d19271 --- /dev/null +++ b/test.js @@ -0,0 +1,5 @@ +require("webassembly") + .load("out.wasm") + .then(module => { + console.log("2 + 2 is " + module.exports.add(2, 2)); + });