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"integrity": "sha1-x+sXyT4RLLEIb6bY5R+wZnt5pfk=", - "requires": { - "buffer-crc32": "~0.2.3", - "fd-slicer": "~1.1.0" - } - }, - "zip-stream": { - "version": "1.2.0", - "resolved": "https://registry.npmjs.org/zip-stream/-/zip-stream-1.2.0.tgz", - "integrity": "sha1-qLxF9MG0lpnGuQGYuqyqzbzUugQ=", - "requires": { - "archiver-utils": "^1.3.0", - "compress-commons": "^1.2.0", - "lodash": "^4.8.0", - "readable-stream": "^2.0.0" + "bindings": "^1.5.0" } } } diff --git a/package.json b/package.json index 4941151..baa9f3d 100644 --- a/package.json +++ b/package.json @@ -4,7 +4,7 @@ "description": "Pivot is a new programming language built with Rust by Garen Tyler. Pivot is currently in the alpha stage of development.", "main": "test.js", "dependencies": { - "webassembly": "^0.11.0" + "wasi": "0.0.6" }, "devDependencies": {}, "scripts": { diff --git a/src/ast.rs b/src/ast.rs index 0d40b92..85f4b44 100644 --- a/src/ast.rs +++ b/src/ast.rs @@ -26,6 +26,8 @@ pub enum AstNodeKind { VariableDefinition, VariableDeclaration, Assign, + // Import + Import, // Blank node Null, } @@ -191,6 +193,16 @@ impl AstNode { subnodes: vec![value], } } + // Import + pub fn import(num_args: AstNode, returns_value: AstNode, mut fn_path: Vec) -> AstNode { + let mut data = vec![num_args, returns_value]; + data.append(&mut fn_path); + AstNode { + kind: AstNodeKind::Import, + value: "import".into(), + subnodes: data, + } + } // Blank node pub fn null() -> AstNode { AstNode { diff --git a/src/codegen.rs b/src/codegen.rs index cad51b5..9c578a8 100644 --- a/src/codegen.rs +++ b/src/codegen.rs @@ -154,6 +154,30 @@ impl Wasm for AstNode { } VariableDeclaration => format!("(local ${} i32)", self.value), Assign => format!("(set_local ${} {})", self.value, self.subnodes[0].emit(s)), + // Import + Import => { + r#"(import "console" "log" (func $log (param i32)))"#.into() + // let mut out = String::new(); + // out += "(import"; + // let num_args = self.subnodes[0].clone().value.parse::().unwrap(); + // let returns_value = self.subnodes[1].clone().value.parse::().unwrap() > 0; + // // (import "console" "log" (func $log (param i32))) + // out += &format!(" \"{}\"", self.subnodes[2].value.clone()); + // let mut combined_name = self.subnodes[2].value.clone(); + // for path in self.subnodes[3..].iter() { + // out += &format!(" \"{}\"", path.value.clone()); + // combined_name += &format!("_{}", path.value.clone()); + // } + // out += &format!(" (func ${}", combined_name); + // for _ in 0..num_args { + // out += " (param i32)"; + // } + // if returns_value { + // out += " (result i32)"; + // } + // out += "))"; + // out + } // Blank node / other Null | _ => "".into(), } diff --git a/src/lib.rs b/src/lib.rs index 4fae7e6..cc4005a 100644 --- a/src/lib.rs +++ b/src/lib.rs @@ -12,5 +12,9 @@ pub fn compile>(src: T) -> Vec { pub fn compile_wat>(src: T) -> String { let mut s = SymbolGenerator::new(); - parse::parse(src).emit(&mut s) + let ast = parse::parse(src); + println!("{}", ast); + let wasm = ast.emit(&mut s); + println!("{}", wasm); + wasm } diff --git a/src/parse/mod.rs b/src/parse/mod.rs index 55c3c3b..7bffbe6 100644 --- a/src/parse/mod.rs +++ b/src/parse/mod.rs @@ -45,13 +45,53 @@ fn parse_statement(src: String) -> Result<(String, String), String> { let right_brace = token(r"[}]"); let while_token = token(r"while\b"); let var = token(r"var\b"); + let number = token(r"[0-9]+").map(|matched| { + Ok(to_string(&AstNode::integer( + matched.parse::().unwrap(), + ))?) + }); let identifier = token(r"[a-zA-Z_][a-zA-Z0-9_]*") .map(|matched| Ok(to_string(&AstNode::identifier(matched))?)); let assign = token(r"=").map(|_matched| Ok(to_string(&AstNode::assign("".into(), AstNode::null()))?)); let comma = token(r"[,]"); + let period = token(r"[.]"); let expression = Parser::custom(parse_expression); let statement = Parser::custom(parse_statement); + let import = token(r"import\b"); + // Statement parsers. + let import_statement = import + .clone() + .ignore() + .and(identifier.clone()) + .and( + period + .clone() + .ignore() + .and(identifier.clone()) + .repeat_range(0..usize::MAX), + ) + .and(number.clone()) + .and(number.clone()) + .and(semicolon.clone().ignore()) + .map(|matched| { + let data = from_str::>(&matched)?; + let import_fn_returns_value = from_str::(&data[1])?; + let data = from_str::>(&data[0])?; + let num_import_fn_args = from_str::(&data[1])?; + let data = from_str::>(&data[0])?; + let mut import_fn_path = vec![]; + import_fn_path.push(from_str::(&data[0])?); + let data = from_str::>(&data[1])?; + for d in data { + import_fn_path.push(from_str::(&d)?); + } + Ok(to_string(&AstNode::import( + num_import_fn_args, + import_fn_returns_value, + import_fn_path, + ))?) + }); let return_statement = return_token .clone() .ignore() @@ -216,6 +256,7 @@ fn parse_statement(src: String) -> Result<(String, String), String> { }); return_statement .clone() + .or(import_statement.clone()) .or(if_statement.clone()) .or(while_statement.clone()) .or(var_statement.clone()) @@ -276,9 +317,8 @@ fn parse_expression(src: String) -> Result<(String, String), String> { AstNode::null(), ))?) }); - // Expression parser. + // Expression parsers. let expression = Parser::custom(parse_expression); - // Call parser. let args = expression .clone() .and( @@ -316,7 +356,6 @@ fn parse_expression(src: String) -> Result<(String, String), String> { } Ok(to_string(&AstNode::function_call(callee, ast_args))?) }); - // Atom parser. let atom = call .clone() .or(identifier.clone()) @@ -326,7 +365,6 @@ fn parse_expression(src: String) -> Result<(String, String), String> { .ignore() .and(expression.clone()) .and(right_paren.clone().ignore())); - // Unary operator parsers. let unary = not.clone().optional().and(atom.clone()).map(|matched| { let data = from_str::>(&matched)?; let atom_data = from_str::(&data[1])?; @@ -335,7 +373,6 @@ fn parse_expression(src: String) -> Result<(String, String), String> { _ => atom_data, })?) }); - // Infix operator parsers. let infix = |operator_parser: Parser, term_parser: Parser| { term_parser .clone() diff --git a/test.js b/test.js index 661418f..293b306 100644 --- a/test.js +++ b/test.js @@ -1,5 +1,21 @@ -require("webassembly") - .load("out.wasm") - .then(module => { - console.log("3 + 2 is " + module.exports.main()); - }); +'use strict'; +const fs = require('fs'); +const WASI = require('wasi'); +const wasi = new WASI({ + args: process.argv, + env: process.env, + preopens: { + '/sandbox': __dirname + } +}); +const importObject = { + wasi_snapshot_preview1: wasi.wasiImport, + console, +}; + +(async () => { + const wasm = await WebAssembly.compile(fs.readFileSync('./out.wasm')); + const instance = await WebAssembly.instantiate(wasm, importObject); + + instance.exports.main(); +})(); diff --git a/test.pvt b/test.pvt index 192dbee..688f5cc 100644 --- a/test.pvt +++ b/test.pvt @@ -1,5 +1,4 @@ +import log 1 0; function main() { - var num1 = 5; - var num2 = 4; - return num1 * num2; + log(3); }