Add stdlib

examples/playground.sb

@@ -1,5 +1,5 @@
 fn main() {
     let x = 10
     x = 5
-    _printf("Hello World!\n")
+    print("Hello World!")
 }

src/builtin/mod.rs

@@ -1,5 +0,0 @@
-use rust_embed::RustEmbed;
-
-#[derive(RustEmbed)]
-#[folder = "src/builtin/"]
-pub struct Builtins;

src/generator/js.rs

@@ -22,8 +22,8 @@ impl Generator for JsGenerator {
     fn generate(prog: Program) -> String {
         let mut code = String::new();
 
-        let raw_builtins = crate::builtin::Builtins::get("builtin.js")
-            .expect("Could not locate builtin functions");
+        let raw_builtins =
+            crate::Builtins::get("builtin.js").expect("Could not locate builtin functions");
         code += std::str::from_utf8(raw_builtins.as_ref())
             .expect("Unable to interpret builtin functions");
         let funcs: String = prog
@@ -34,8 +34,7 @@ impl Generator for JsGenerator {
 
         code += &funcs;
 
-        // Until we have a stdlib, it should suffice to print the result of main to stdout
-        code += "console.log(main())";
+        code += "main();";
 
         return code;
     }

src/main.rs

@@ -24,11 +24,19 @@ use std::io::Write;
 use std::path::PathBuf;
 use structopt::StructOpt;
 
-mod builtin;
 mod generator;
 mod lexer;
 mod parser;
 mod util;
+use rust_embed::RustEmbed;
+
+#[derive(RustEmbed)]
+#[folder = "lib/"]
+pub struct Lib;
+
+#[derive(RustEmbed)]
+#[folder = "builtin/"]
+pub struct Builtins;
 
 #[derive(StructOpt, Debug)]
 enum Opt {
@@ -49,19 +57,29 @@ fn main() -> Result<(), String> {
     };
     let mut file = File::open(in_file).expect("Could not open file");
     let mut contents = String::new();
+
+    contents = append_stdlib(contents);
+
     file.read_to_string(&mut contents)
         .expect("Could not read file");
 
     let tokens = lexer::tokenize(&contents);
-    // let ast = parser::parse(tokens.into_iter());
-
     let program = parser::parse(tokens, Some(contents))?;
 
-    dbg!(":#?", &program);
-
     let output = generator::js::JsGenerator::generate(program);
     let mut file = std::fs::File::create(out_file).expect("create failed");
     file.write_all(output.as_bytes()).expect("write failed");
     file.flush().expect("Could not flush file");
     Ok(())
 }
+
+fn append_stdlib(mut buffer: String) -> String {
+    buffer += "// START stdlib\n\n";
+
+    let stdlib = Lib::get("stdio.sb").expect("Standard library not found. This should not occur.");
+    buffer += std::str::from_utf8(&stdlib).expect("Could not interpret standard library.");
+
+    buffer += "\n// END stdlib\n\n";
+
+    buffer
+}

src/parser/rules.rs

@@ -42,7 +42,6 @@ impl Parser {
 
         while let Err(_) = self.peek_token(TokenKind::CurlyBracesClose) {
             let statement = self.parse_statement()?;
-            dbg!("{:?}", &statement);
             statements.push(statement);
         }