include

src/ast/types.rs

@@ -2,6 +2,22 @@
 
 use std::collections::BTreeMap;
 
+/// A Program.
+#[derive(PartialEq, PartialOrd, Debug, Clone)]
+pub struct Program {
+    pub defs: Vec<Definition>,
+}
+
+#[derive(PartialEq, PartialOrd, Debug, Clone)]
+pub struct File(pub String);
+
+#[derive(PartialEq, PartialOrd, Debug, Clone)]
+pub struct Definition {
+    pub mutable: bool,
+    pub name: Name,
+    pub expr: Expr,
+}
+
 /// An expression.
 #[derive(PartialEq, PartialOrd, Debug, Clone)]
 pub enum Expr {
@@ -77,13 +93,6 @@ pub enum Statement {
     Break,
 }
 
-#[derive(PartialEq, PartialOrd, Debug, Clone)]
-pub struct Definition {
-    pub mutable: bool,
-    pub name: Name,
-    pub expr: Expr,
-}
-
 /// A reduced value.
 #[derive(PartialEq, PartialOrd, Debug, Clone)]
 pub enum Value {
@@ -136,10 +145,6 @@ pub struct Record(pub BTreeMap<Label, Ref>);
 #[derive(PartialEq, PartialOrd, Debug, Clone)]
 pub struct Vector(pub Vec<Ref>);
 
-/// A Program.
-#[derive(PartialEq, PartialOrd, Debug, Clone)]
-pub struct Program(pub Vec<Definition>);
-
 // ----- //
 // Impls //
 // ----- //
@@ -225,7 +230,7 @@ impl From<bool> for Expr {
 
 impl From<Vec<Definition>> for Program {
     fn from(defs: Vec<Definition>) -> Program {
-        Program(defs)
+        Program { defs }
     }
 }
 

src/interpret/interpret.rs

@@ -13,7 +13,7 @@ pub fn global_env_name() -> ast::EnvName {
 pub fn setup(program: ast::Program, prim_funcs: PrimitiveFuncs) -> Result<State, Error> {
     let mut state = State::new(global_env_name().0.clone(), prim_funcs);
 
-    defs_to_env(program.0, &global_env_name(), &mut state)?;
+    defs_to_env(program.defs, &global_env_name(), &mut state)?;
     Ok(state)
 }
 

src/parser/parser.rs

@@ -15,7 +15,30 @@ pub fn parse<T>(tokens: &mut Tokens, parser: Parser<T>) -> Result<T, Error> {
 }
 
 pub fn parse_program(tokens: &mut Tokens) -> ParseResult<ast::Program> {
-    Ok(parse_definitions(tokens)?.map(ast::Program))
+    Ok(parse_definitions(tokens)?.map(|defs| ast::Program { defs }))
+}
+
+fn parse_includes(tokens: &mut Tokens) -> ParseResult<Vec<ast::File>> {
+    tokens.many(parse_include)
+}
+
+fn parse_include(tokens: &mut Tokens) -> ParseResult<ast::File> {
+    if let Some(_) = tokens.next_if(&Token::Include) {
+        if let Some(LocatedToken {
+            token: Token::String(string),
+            ..
+        }) = tokens.next_if(&Token::String("".into()))
+        {
+            Ok(Some(ast::File(string)))
+        } else {
+            Err(Error::UnexpectedToken {
+                expected: Token::String("".into()),
+                got: tokens.next(),
+            })
+        }
+    } else {
+        Ok(None)
+    }
 }
 
 fn parse_definitions(tokens: &mut Tokens) -> ParseResult<Vec<ast::Definition>> {

src/parser/scanner.rs

@@ -304,6 +304,7 @@ pub fn scan(source: String) -> Tokens {
                             "if" => Token::If,
                             "else" => Token::Else,
                             "return" => Token::Return,
+                            "include" => Token::Include,
                             "loop" => Token::Loop,
                             "break" => Token::Break,
                             "true" => Token::True,

src/parser/snapshots/ayin__parser__parser__tests__let_loop_count.snap

@@ -3,8 +3,8 @@ source: src/parser/parser.rs
 expression: result
 ---
 Ok(
-    Program(
-        [
+    Program {
+        defs: [
             Definition {
                 mutable: false,
                 name: Name(
@@ -124,5 +124,5 @@ Ok(
                 ),
             },
         ],
-    ),
+    },
 )

src/parser/types.rs

@@ -24,6 +24,7 @@ pub enum Token {
     If,
     Else,
     Return,
+    Include,
     OpenParen,
     CloseParen,
     OpenBracket,

src/runtime/runtime.rs

@@ -136,7 +136,7 @@ pub fn fetch_events(state: &mut State) -> Input {
     input.gamepad1.dpad.up = is_key_down(KeyCode::Up);
     input.gamepad1.dpad.down = is_key_down(KeyCode::Down);
 
-    for gamepad in state.gamepads.all() {
+    if let Some(gamepad) = state.gamepads.all().next() {
         //println!("{:#?}", gamepad.all_currently_pressed().collect::<Vec<_>>());
         // action buttons
         input.gamepad1.buttons.a = gamepad.is_currently_pressed(gamepads::Button::ActionRight);
@@ -165,7 +165,6 @@ pub fn fetch_events(state: &mut State) -> Input {
 
         input.gamepad1.right_stick.x = gamepad.right_stick_x();
         input.gamepad1.right_stick.y = gamepad.right_stick_y();
-        break;
     }
     input
 }