schala-lang/language/src/ast/mod.rs

@@ -196,7 +196,6 @@ pub enum ExpressionKind {
     WhileExpression { condition: Option<Box<Expression>>, body: Block },
     ForExpression { enumerators: Vec<Enumerator>, body: Box<ForBody> },
     Lambda { params: Vec<FormalParam>, type_anno: Option<TypeIdentifier>, body: Block },
-    Access { name: Rc<String>, expr: Box<Expression> },
     ListLiteral(Vec<Expression>),
 }
 

schala-lang/language/src/ast/visitor.rs

@@ -128,9 +128,6 @@ pub fn walk_expression<V: ASTVisitor>(v: &mut V, expr: &Expression) {
             Lambda { params: _, type_anno: _, body } => {
                 walk_block(v, body);
             }
-            Access { name: _, expr } => {
-                walk_expression(v, expr);
-            }
             ListLiteral(exprs) =>
                 for expr in exprs {
                     walk_expression(v, expr);

schala-lang/language/src/ast/visualize.rs

@@ -120,7 +120,6 @@ fn render_expression(expr: &Expression, indent: usize, buf: &mut String) {
             newline(buf);
             do_indent(indent, buf);
         }
-        Access { .. } => buf.push_str("<access-expr>"),
         ListLiteral(..) => buf.push_str("<list-literal>"),
     }
     buf.push(')');

schala-lang/language/src/parsing/mod.rs

@@ -166,28 +166,29 @@
 //!
 //! module := 'module' IDENTIFIER '{' statement* '}'
 //! ```
-mod new_tests;
 mod test;
+mod new_tests;
 
 use std::rc::Rc;
 
-use crate::{
+use crate::tokenizing::*;
-    ast::*,
+use crate::tokenizing::Kw::*;
-    identifier::IdStore,
+use crate::tokenizing::TokenKind::*;
-    tokenizing::{Kw::*, Location, TokenKind::*, *},
+use crate::tokenizing::Location;
-};
+
+use crate::ast::*;
+use crate::identifier::IdStore;
 
 /// Represents a parsing error
 #[derive(Debug)]
 pub struct ParseError {
   pub production_name: Option<String>,
   pub msg: String,
-    pub token: Token,
+  pub token: Token
 }
 
 impl ParseError {
-    fn new_with_token<T, M>(msg: M, token: Token) -> ParseResult<T>
+  fn new_with_token<T, M>(msg: M, token: Token) -> ParseResult<T> where M: Into<String> {
-    where M: Into<String> {
     Err(ParseError { msg: msg.into(), token, production_name: None })
   }
 }
@@ -211,14 +212,15 @@ pub struct Parser {
   id_store: IdStore<ASTItem>,
 }
 
+
 struct ParserRestrictions {
-    no_struct_literal: bool,
+  no_struct_literal: bool
 }
 
 struct TokenHandler {
   tokens: Vec<Token>,
   idx: usize,
-    end_of_file: Location,
+  end_of_file: Location
 }
 
 impl TokenHandler {
@@ -238,24 +240,15 @@ impl TokenHandler {
     self.peek_n(n).kind
   }
   fn peek(&mut self) -> Token {
-        self.tokens
+    self.tokens.get(self.idx).cloned().unwrap_or(Token { kind: TokenKind::EOF, location: self.end_of_file })
-            .get(self.idx)
-            .cloned()
-            .unwrap_or(Token { kind: TokenKind::EOF, location: self.end_of_file })
   }
   /// calling peek_n(0) is the same thing as peek()
   fn peek_n(&mut self, n: usize) -> Token {
-        self.tokens
+    self.tokens.get(self.idx + n).cloned().unwrap_or(Token { kind: TokenKind::EOF, location: self.end_of_file })
-            .get(self.idx + n)
-            .cloned()
-            .unwrap_or(Token { kind: TokenKind::EOF, location: self.end_of_file })
   }
   fn next(&mut self) -> Token {
     self.idx += 1;
-        self.tokens
+    self.tokens.get(self.idx - 1).cloned().unwrap_or(Token { kind: TokenKind::EOF, location: self.end_of_file })
-            .get(self.idx - 1)
-            .cloned()
-            .unwrap_or(Token { kind: TokenKind::EOF, location: self.end_of_file })
   }
 }
 
@@ -303,9 +296,7 @@ impl Parser {
 }
 
 macro_rules! print_token_pattern {
-    ($tokenpattern:pat) => {
+  ($tokenpattern:pat) => { stringify!($tokenpattern) }
-        stringify!($tokenpattern)
-    };
 }
 
 macro_rules! expect {
@@ -331,7 +322,8 @@ macro_rules! delimited {
   ($self:expr, $start:pat, $parse_fn:ident, $delim:pat, $end:pat) => {
     delimited!($self, $start, $parse_fn, $delim, $end, true)
   };
-    ($self:expr, $start:pat, $parse_fn:ident, $delim:pat, $end:pat, $strictness:expr) => {{
+  ($self:expr, $start:pat, $parse_fn:ident, $delim:pat, $end:pat, $strictness:expr) => {
+    {
       expect!($self, $start);
       let mut acc = vec![];
       loop {
@@ -339,34 +331,29 @@ macro_rules! delimited {
         match peek.get_kind() {
           $end | EOF => break,
           Newline | Semicolon => {
-                    $self.token_handler.next();
+              $self.token_handler.next(); continue;
-                    continue;
+          },
-                }
           _ => (),
         }
         if !$strictness {
           match peek.get_kind() {
-                    $delim => {
+            $delim => { $self.token_handler.next(); continue },
-                        $self.token_handler.next();
+            _ => ()
-                        continue;
-                    }
-                    _ => (),
           }
         }
         acc.push($self.$parse_fn()?);
         match $self.token_handler.peek().get_kind() {
-                $delim => {
+          $delim => { $self.token_handler.next(); continue },
-                    $self.token_handler.next();
-                    continue;
-                }
           _ if $strictness => break,
           _ => continue,
         };
       }
       expect!($self, $end);
       acc
-    }};
     }
+  };
+}
+
 
 impl Parser {
   /// `program := (statement delimiter)* EOF`
@@ -380,8 +367,10 @@ impl Parser {
         Newline | Semicolon => {
           self.token_handler.next();
           continue;
-                }
+        },
-                _ => statements.push(self.statement()?),
+        _ => statements.push(
+          self.statement()?
+        ),
       }
     }
     Ok(AST { id: self.id_store.fresh(), statements: statements.into() })
@@ -394,19 +383,20 @@ impl Parser {
     let tok = self.token_handler.peek();
     let kind = match tok.get_kind() {
       AtSign => self.annotation().map(StatementKind::Declaration),
-            Keyword(Type) => self.type_declaration().map(|decl| StatementKind::Declaration(decl)),
+      Keyword(Type) => self.type_declaration().map(|decl| { StatementKind::Declaration(decl) }),
-            Keyword(Func) => self.func_declaration().map(|func| StatementKind::Declaration(func)),
+      Keyword(Func)=> self.func_declaration().map(|func| { StatementKind::Declaration(func) }),
       Keyword(Let) => self.binding_declaration().map(StatementKind::Declaration),
       Keyword(Interface) => self.interface_declaration().map(StatementKind::Declaration),
       Keyword(Impl) => self.impl_declaration().map(StatementKind::Declaration),
       Keyword(Import) => self.import_declaration().map(StatementKind::Import),
       Keyword(Module) => self.module_declaration().map(StatementKind::Module),
-            _ => self.expression().map(|expr| StatementKind::Expression(expr)),
+      _ => self.expression().map(|expr| { StatementKind::Expression(expr) } ),
     }?;
     let id = self.id_store.fresh();
     Ok(Statement { kind, id, location: tok.location })
   }
 
+
   #[recursive_descent_method]
   fn annotation(&mut self) -> ParseResult<Declaration> {
       expect!(self, AtSign);
@@ -417,7 +407,10 @@ impl Parser {
           vec![]
       };
 
-        Ok(Declaration::Annotation { name, arguments })
+      Ok(Declaration::Annotation {
+          name,
+          arguments,
+      })
   }
 
   #[recursive_descent_method]
@@ -470,16 +463,19 @@ impl Parser {
       LParen => {
         let tuple_members = delimited!(self, LParen, type_name, Comma, RParen);
         VariantKind::TupleStruct(tuple_members)
-            }
+      },
       LCurlyBrace => {
           println!("ARAH");
-                let typed_identifier_list =
+        let typed_identifier_list = delimited!(self, LCurlyBrace, typed_identifier, Comma, RCurlyBrace);
-                    delimited!(self, LCurlyBrace, typed_identifier, Comma, RCurlyBrace);
         VariantKind::Record(typed_identifier_list)
-            }
+      },
-            _ => VariantKind::UnitStruct,
+      _ => VariantKind::UnitStruct
     };
-        Ok(Variant { id: self.id_store.fresh(), name, kind })
+    Ok(Variant {
+        id: self.id_store.fresh(),
+        name,
+        kind
+    })
   }
 
   #[recursive_descent_method]
@@ -509,8 +505,8 @@ impl Parser {
         let name = s;
         self.token_handler.next();
         (name, true)
-            }
+      },
-            _ => (self.identifier()?, false),
+      _ => (self.identifier()?, false)
     };
     let params = self.formal_param_list()?;
     let type_anno = match self.token_handler.peek_kind() {
@@ -522,8 +518,7 @@ impl Parser {
 
   #[recursive_descent_method]
   fn nonempty_func_body(&mut self) -> ParseResult<Vec<Statement>> {
-        let statements =
+    let statements = delimited!(self, LCurlyBrace, statement, Newline | Semicolon, RCurlyBrace, nonstrict);
-            delimited!(self, LCurlyBrace, statement, Newline | Semicolon, RCurlyBrace, nonstrict);
     Ok(statements)
   }
 
@@ -537,14 +532,14 @@ impl Parser {
     let name = self.identifier()?;
     let anno = match self.token_handler.peek_kind() {
       Colon => Some(self.type_anno()?),
-            _ => None,
+      _ => None
     };
     let default = match self.token_handler.peek_kind() {
       Equals => {
         self.token_handler.next();
         Some(self.expression()?)
-            }
+      },
-            _ => None,
+      _ => None
     };
     Ok(FormalParam { name, anno, default })
   }
@@ -557,11 +552,14 @@ impl Parser {
         self.token_handler.next();
         false 
       }
-            _ => true,
+      _ => true
     };
     let name = self.identifier()?;
-        let type_anno =
+    let type_anno = if let Colon = self.token_handler.peek_kind() {
-            if let Colon = self.token_handler.peek_kind() { Some(self.type_anno()?) } else { None };
+      Some(self.type_anno()?)
+    } else {
+      None
+    };
 
     expect!(self, Equals);
     let expr = self.expression()?;
@@ -597,11 +595,8 @@ impl Parser {
     Ok(match (first, second) {
       (interface_name, Some(type_name)) =>
         Declaration::Impl { type_name, interface_name: Some(interface_name), block },
-            (type_singleton_name, None) => Declaration::Impl {
+      (type_singleton_name, None) =>
-                type_name: TypeIdentifier::Singleton(type_singleton_name),
+        Declaration::Impl { type_name: TypeIdentifier::Singleton(type_singleton_name), interface_name: None, block }
-                interface_name: None,
-                block,
-            },
     })
   }
 
@@ -615,7 +610,7 @@ impl Parser {
     let mut expr_body = self.precedence_expr(BinOp::min_precedence())?;
     let type_anno = match self.token_handler.peek_kind() {
       Colon => Some(self.type_anno()?),
-            _ => None,
+      _ => None
     };
     if expr_body.type_anno.is_some() {
       return ParseError::new_with_token("Bad parse state encountered", self.token_handler.peek());
@@ -646,7 +641,7 @@ impl Parser {
       params: match self.token_handler.peek_kind() {
         LAngleBracket => delimited!(self, LAngleBracket, type_name, Comma, RAngleBracket),
         _ => vec![],
-            },
+      }
     })
   }
 
@@ -675,13 +670,10 @@ impl Parser {
       let operation = match BinOp::from_sigil_token(&next_tok.kind) {
         Some(sigil) => sigil,
         //TODO I think I can fix this unreachable
-                None => unreachable!(),
+        None => unreachable!()
       };
       let rhs = self.precedence_expr(new_precedence)?;
-            lhs = Expression::new(
+      lhs = Expression::new(self.id_store.fresh(), ExpressionKind::BinExp(operation, Box::new(lhs), Box::new(rhs)));
-                self.id_store.fresh(),
-                ExpressionKind::BinExp(operation, Box::new(lhs), Box::new(rhs)),
-            );
     }
     self.parse_level -= 1;
     Ok(lhs)
@@ -699,10 +691,10 @@ impl Parser {
         let prefix_op = PrefixOp::from_sigil(sigil.as_str());
         Ok(Expression::new(
           self.id_store.fresh(),
-                    ExpressionKind::PrefixExp(prefix_op, Box::new(expr)),
+          ExpressionKind::PrefixExp(prefix_op, Box::new(expr))
         ))
-            }
+      },
-            _ => self.extended_expr(),
+      _ => self.extended_expr()
     }
   }
 
@@ -713,34 +705,24 @@ impl Parser {
           //TODO need a next non whitespace
           let next = self.token_handler.peek_kind();
           match next {
-                Period => {
+              Period => unimplemented!(),
-                    self.token_handler.next();
-                    let name = self.identifier()?;
-                    expression = Expression::new(
-                        self.id_store.fresh(),
-                        ExpressionKind::Access { name, expr: Box::new(expression) },
-                    );
-                }
               LSquareBracket => {
                   let indexers = delimited!(self, LSquareBracket, expression, Comma, RSquareBracket);
                   if indexers.is_empty() {
-                        return ParseError::new_with_token(
+                      return ParseError::new_with_token("Empty index expressions are not allowed", self.token_handler.peek());
-                            "Empty index expressions are not allowed",
-                            self.token_handler.peek(),
-                        );
-                    }
-                    expression = Expression::new(
-                        self.id_store.fresh(),
-                        ExpressionKind::Index { indexee: Box::new(expression), indexers },
-                    );
                   }
+                  expression = Expression::new(self.id_store.fresh(), ExpressionKind::Index {
+                      indexee: Box::new(expression),
+                      indexers,
+                  });
+              },
               LParen => {
                   let arguments = delimited!(self, LParen, invocation_argument, Comma, RParen);
-                    expression = Expression::new(
+                  expression = Expression::new(self.id_store.fresh(), ExpressionKind::Call {
-                        self.id_store.fresh(),
+                      f: Box::new(expression),
-                        ExpressionKind::Call { f: Box::new(expression), arguments },
+                      arguments,
-                    );
+                  });
-                }
+              },
               _ => break,
           }
       }
@@ -753,20 +735,22 @@ impl Parser {
       Underscore => {
         self.token_handler.next();
         InvocationArgument::Ignored
-            }
+      },
-            Identifier(s) => match self.token_handler.peek_kind_n(1) {
+      Identifier(s) => {
+        match self.token_handler.peek_kind_n(1) {
           Equals => {
             self.token_handler.next();
             self.token_handler.next();
             let expr = self.expression()?;
             InvocationArgument::Keyword { name: s, expr }
-                }
+          },
           _ => {
             let expr = self.expression()?;
             InvocationArgument::Positional(expr)
           }
+        }
       },
-            _ => InvocationArgument::Positional(self.expression()?),
+      _ => InvocationArgument::Positional(self.expression()?)
     })
   }
 
@@ -776,18 +760,12 @@ impl Parser {
     Ok(if let LSquareBracket = self.token_handler.peek_kind() {
       let indexers = delimited!(self, LSquareBracket, expression, Comma, RSquareBracket);
       if indexers.is_empty() {
-                return ParseError::new_with_token(
+        return ParseError::new_with_token("Empty index expressions are not allowed", self.token_handler.peek());
-                    "Empty index expressions are not allowed",
-                    self.token_handler.peek(),
-                );
       }
-            Expression::new(
+      Expression::new(self.id_store.fresh(), ExpressionKind::Index {
-                self.id_store.fresh(),
-                ExpressionKind::Index {
         indexee: Box::new(Expression::new(self.id_store.fresh(), primary.kind)),
         indexers,
-                },
+      })
-            )
     } else {
       primary
     })
@@ -828,8 +806,7 @@ impl Parser {
       _ => None,
     };
     let body = self.nonempty_func_body()?.into();
-        Ok(Expression::new(self.id_store.fresh(), ExpressionKind::Lambda { params, type_anno, body }))
+    Ok(Expression::new(self.id_store.fresh(), ExpressionKind::Lambda { params, type_anno, body })) //TODO need to handle types somehow
-        //TODO need to handle types somehow
   }
 
   #[recursive_descent_method]
@@ -852,7 +829,7 @@ impl Parser {
       match inner.len() {
         0 => Ok(Expression::new(self.id_store.fresh(), TupleLiteral(vec![]))),
         1 => Ok(inner.pop().unwrap()),
-                _ => Ok(Expression::new(self.id_store.fresh(), TupleLiteral(inner))),
+        _ => Ok(Expression::new(self.id_store.fresh(), TupleLiteral(inner)))
       }
     };
     self.restrictions.no_struct_literal = old_struct_value;
@@ -868,8 +845,8 @@ impl Parser {
       LCurlyBrace if !self.restrictions.no_struct_literal => {
         let fields = self.record_block()?;
         Expression::new(self.id_store.fresh(), NamedStruct { name: qualified_identifier, fields })
-            }
+      },
-            _ => Expression::new(self.id_store.fresh(), Value(qualified_identifier)),
+      _ => Expression::new(self.id_store.fresh(), Value(qualified_identifier))
     })
   }
 
@@ -957,17 +934,11 @@ impl Parser {
     loop {
       match self.token_handler.peek_kind() {
         RCurlyBrace | EOF => break,
-                Semicolon | Newline => {
+        Semicolon | Newline => { self.token_handler.next(); continue},
-                    self.token_handler.next();
-                    continue;
-                }
         _ => {
           cond_arms.push(self.cond_arm()?);
           match self.token_handler.peek_kind() {
-                        Comma | Semicolon | Newline => {
+            Comma | Semicolon | Newline => { self.token_handler.next(); continue; },
-                            self.token_handler.next();
-                            continue;
-                        }
             _ => break,
           }
         }
@@ -998,13 +969,15 @@ impl Parser {
       Keyword(Kw::Is) => {
         self.token_handler.next();
         Condition::Pattern(self.pattern()?)
-            }
+      },
       ref tok if BinOp::from_sigil_token(tok).is_some() => {
         let op = BinOp::from_sigil_token(&self.token_handler.next().kind).unwrap();
         let expr = self.expression()?;
         Condition::TruncatedOp(op, expr)
-            }
+      },
-            _ => Condition::Expression(self.expression()?),
+      _ => {
+        Condition::Expression(self.expression()?)
+      },
     })
   }
 
@@ -1014,8 +987,8 @@ impl Parser {
       Keyword(Kw::If) => {
         self.token_handler.next();
         Some(self.expression()?)
-            }
+      },
-            _ => None,
+      _ => None
     })
   }
 
@@ -1039,15 +1012,17 @@ impl Parser {
           LCurlyBrace => {
             let members = delimited!(self, LCurlyBrace, record_pattern_entry, Comma, RCurlyBrace);
             Pattern::Record(qualified_identifier, members)
-                    }
+          },
           LParen => {
             let members = delimited!(self, LParen, pattern, Comma, RParen);
             Pattern::TupleStruct(qualified_identifier, members)
+          },
+          _ => {
+            Pattern::VarOrName(qualified_identifier)
+          },
         }
-                    _ => Pattern::VarOrName(qualified_identifier),
+      },
-                }
+      _ => self.pattern_literal()?
-            }
-            _ => self.pattern_literal()?,
     })
   }
 
@@ -1058,22 +1033,22 @@ impl Parser {
       Keyword(Kw::True) => {
         self.token_handler.next();
         Pattern::Literal(PatternLiteral::BoolPattern(true))
-            }
+      },
       Keyword(Kw::False) => {
         self.token_handler.next();
         Pattern::Literal(PatternLiteral::BoolPattern(false))
-            }
+      },
       StrLiteral { s, .. } => {
         self.token_handler.next();
         Pattern::Literal(PatternLiteral::StringPattern(s))
-            }
+      },
       DigitGroup(_) | HexLiteral(_) | BinNumberSigil | Period => self.signed_number_literal()?,
       Operator(ref op) if **op == "-" => self.signed_number_literal()?,
       Underscore => {
         self.token_handler.next();
         Pattern::Ignored
-            }
+      },
-            other => return ParseError::new_with_token(format!("{:?} is not a valid Pattern", other), tok),
+      other => return ParseError::new_with_token(format!("{:?} is not a valid Pattern", other), tok)
     })
   }
 
@@ -1083,8 +1058,8 @@ impl Parser {
       Operator(ref op) if **op == "-" => {
         self.token_handler.next();
         true
-            }
+      },
-            _ => false,
+      _ => false
     };
     let Expression { kind, .. } = self.number_literal()?;
     Ok(Pattern::Literal(PatternLiteral::NumPattern { neg, num: kind }))
@@ -1098,8 +1073,8 @@ impl Parser {
         expect!(self, Colon);
         let pat = self.pattern()?;
         (name, pat)
-            }
+      },
-            _ => (name.clone(), Pattern::Literal(PatternLiteral::StringPattern(name))),
+      _ => (name.clone(), Pattern::Literal(PatternLiteral::StringPattern(name)))
     })
   }
 
@@ -1116,11 +1091,7 @@ impl Parser {
       LCurlyBrace => self.block(),
       _ => {
         let expr = self.expression()?;
-                let s = Statement {
+        let s = Statement { id: self.id_store.fresh(), location: tok.location, kind: StatementKind::Expression(expr) };
-                    id: self.id_store.fresh(),
-                    location: tok.location,
-                    kind: StatementKind::Expression(expr),
-                };
         Ok(s.into())
       }
     }
@@ -1180,14 +1151,13 @@ impl Parser {
     let tok = self.token_handler.peek();
     Ok(match tok.get_kind() {
       LCurlyBrace => {
-                let statements =
+        let statements = delimited!(self, LCurlyBrace, statement, Newline | Semicolon, RCurlyBrace, nonstrict);
-                    delimited!(self, LCurlyBrace, statement, Newline | Semicolon, RCurlyBrace, nonstrict);
         StatementBlock(statements.into())
-            }
+      },
       Keyword(Kw::Return) => {
         self.token_handler.next();
         MonadicReturn(self.expression()?)
-            }
+      },
       _ => return ParseError::new_with_token("for expressions must end in a block or 'return'", tok),
     })
   }
@@ -1212,12 +1182,12 @@ impl Parser {
         self.token_handler.next();
         let id = self.id_store.fresh();
         Ok(Expression::new(id, BoolLiteral(true)))
-            }
+      },
       Keyword(Kw::False) => {
         self.token_handler.next();
         let id = self.id_store.fresh();
         Ok(Expression::new(id, BoolLiteral(false)))
-            }
+      },
       StrLiteral {s, ..} => {
         self.token_handler.next();
         let id = self.id_store.fresh();
@@ -1244,12 +1214,12 @@ impl Parser {
         let digits = self.digits()?;
         let n = parse_binary(digits, tok)?;
         Ok(Expression::new(self.id_store.fresh(), NatLiteral(n)))
-            }
+      },
       HexLiteral(text) => {
         let digits: String = text.chars().filter(|c| c.is_digit(16)).collect();
         let n = parse_hex(digits, tok)?;
         Ok(Expression::new(self.id_store.fresh(), NatLiteral(n)))
-            }
+      },
       _ => return ParseError::new_with_token("Expected '0x' or '0b'", tok),
     }
   }
@@ -1266,12 +1236,12 @@ impl Parser {
       match digits.parse::<f64>() {
         Ok(f) => Ok(Expression::new(self.id_store.fresh(), FloatLiteral(f))),
         Err(e) => ParseError::new_with_token(format!("Float failed to parse with error: {}", e), tok),
+
       }
     } else {
       match digits.parse::<u64>() {
         Ok(d) => Ok(Expression::new(self.id_store.fresh(), NatLiteral(d))),
-                Err(e) =>
+        Err(e) => ParseError::new_with_token(format!("Integer failed to parse with error: {}", e), tok),
-                    ParseError::new_with_token(format!("Integer failed to parse with error: {}", e), tok),
       }
     }
   }
@@ -1281,14 +1251,8 @@ impl Parser {
     let mut ds = String::new();
     loop {
       match self.token_handler.peek_kind() {
-                Underscore => {
+        Underscore => { self.token_handler.next(); continue; },
-                    self.token_handler.next();
+        DigitGroup(ref s) => { self.token_handler.next(); ds.push_str(s)},
-                    continue;
-                }
-                DigitGroup(ref s) => {
-                    self.token_handler.next();
-                    ds.push_str(s)
-                }
         _ => break,
       }
     }
@@ -1314,15 +1278,19 @@ impl Parser {
       LCurlyBrace => {
         let names = delimited!(self, LCurlyBrace, identifier, Comma, RCurlyBrace);
         ImportedNames::List(names)
-            }
+      },
       Operator(ref s) if **s == "*" => {
         self.token_handler.next();
         ImportedNames::All
-            }
+      },
-            _ => ImportedNames::LastOfPath,
+      _ => ImportedNames::LastOfPath
     };
 
-        Ok(ImportSpecifier { id: self.id_store.fresh(), path_components, imported_names })
+    Ok(ImportSpecifier {
+      id: self.id_store.fresh(),
+      path_components,
+      imported_names
+    })
   }
 
   #[recursive_descent_method]
@@ -1331,11 +1299,11 @@ impl Parser {
       Operator(ref s) if **s == "*" => {
         self.token_handler.next();
         ImportedNames::All
-            }
+      },
       LCurlyBrace => {
         let names = delimited!(self, LCurlyBrace, identifier, Comma, RCurlyBrace);
         ImportedNames::List(names)
-            }
+      },
       _ => return ParseError::new_with_token("Expected '{{' or '*'", self.token_handler.peek()),
     })
   }
@@ -1356,15 +1324,11 @@ fn parse_binary(digits: String, tok: Token) -> ParseResult<u64> {
     match d {
       '1' => result += multiplier,
       '0' => (),
-            _ =>
+      _ => return ParseError::new_with_token("Encountered a character not '1' or '0 while parsing a binary literal", tok),
-                return ParseError::new_with_token(
-                    "Encountered a character not '1' or '0 while parsing a binary literal",
-                    tok,
-                ),
     }
     multiplier = match multiplier.checked_mul(2) {
       Some(m) => m,
-            None => return ParseError::new_with_token("This binary expression will overflow", tok),
+      None => return ParseError::new_with_token("This binary expression will overflow", tok)
     }
   }
   Ok(result)
@@ -1380,8 +1344,9 @@ fn parse_hex(digits: String, tok: Token) -> ParseResult<u64> {
     }
     multiplier = match multiplier.checked_mul(16) {
       Some(m) => m,
-            None => return ParseError::new_with_token("This hex expression will overflow", tok),
+      None => return ParseError::new_with_token("This hex expression will overflow", tok)
     }
   }
   Ok(result)
 }
+

schala-lang/language/src/parsing/new_tests.rs

@@ -203,36 +203,11 @@ fn operators() {
 
 #[test]
 fn accessors() {
-    use ExpressionKind::*;
+    /*
-
+    assert_expr!("a.b");
-    assert_expr!("a.b", expr(Access { name: rc("b"), expr: bx(expr(Value(qn!(a)))) }));
+    assert_expr!("a.b.c.d()");
-    assert_expr!(
+    assert_expr!("a.b().c.d()");
-        "a.b.c",
+    */
-        expr(Access {
-            name: rc("c"),
-            expr: bx(expr(Access { name: rc("b"), expr: bx(expr(Value(qn!(a)))) }))
-        })
-    );
-    assert_expr!(
-        "a.b.c(3)",
-        expr(Call {
-            f: bx(expr(Access {
-                name: rc("c"),
-                expr: bx(expr(Access { name: rc("b"), expr: bx(expr(Value(qn!(a)))) }))
-            })),
-            arguments: vec![InvocationArgument::Positional(expr(NatLiteral(3)))],
-        })
-    );
-    assert_expr!(
-        "a.b().c",
-        expr(Access {
-            name: rc("c"),
-            expr: bx(expr(Call {
-                f: bx(expr(Access { name: rc("b"), expr: bx(expr(Value(qn!(a)))) })),
-                arguments: vec![]
-            }))
-        })
-    );
 }
 
 #[test]

schala-lang/language/src/reduced_ir/mod.rs

@@ -4,7 +4,7 @@ use crate::{
     ast,
     builtin::Builtin,
     symbol_table::{DefId, SymbolSpec, SymbolTable},
-    type_inference::{TypeContext, TypeId},
+    type_inference::TypeContext,
 };
 
 mod test;
@@ -135,14 +135,23 @@ impl<'a, 'b> Reducer<'a, 'b> {
             }),
             NamedStruct { name, fields } => {
                 self.symbol_table.debug();
-                println!("Namedstruct name {} id: {}", name, name.id);
                 let symbol = self.symbol_table.lookup_symbol(&name.id).unwrap();
                 let (tag, type_id) = match symbol.spec() {
                     SymbolSpec::RecordConstructor { tag, members: _, type_id } => (tag, type_id),
                     e => return Expression::ReductionError(format!("Bad symbol for NamedStruct: {:?}", e)),
                 };
 
-                let field_order = compute_field_orderings(&self.type_context, &type_id, tag).unwrap();
+                // Eventually, the ReducedIR should decide what field ordering is optimal.
+                // For now, just do it alphabetically.
+                let mut field_order: Vec<String> = self
+                    .type_context
+                    .lookup_record_members(&type_id, tag)
+                    .unwrap()
+                    .iter()
+                    .map(|(field, _type_id)| field)
+                    .cloned()
+                    .collect();
+                field_order.sort_unstable();
 
                 let mut field_map = HashMap::new();
                 for (name, expr) in fields.iter() {
@@ -170,8 +179,6 @@ impl<'a, 'b> Reducer<'a, 'b> {
             WhileExpression { .. } => Expression::ReductionError("While expr not implemented".to_string()),
             ForExpression { .. } => Expression::ReductionError("For expr not implemented".to_string()),
             ListLiteral { .. } => Expression::ReductionError("ListLiteral expr not implemented".to_string()),
-            Access { name, expr } =>
-                Expression::Access { name: name.as_ref().to_string(), expr: Box::new(self.expression(expr)) },
         }
     }
 
@@ -381,21 +388,3 @@ impl ast::Pattern {
         })
     }
 }
-
-/// Given the type context and a variant, compute what order the fields on it were stored.
-/// This needs to be public until type-checking is fully implemented because the type information
-/// is only available at runtime.
-pub fn compute_field_orderings(
-    type_context: &TypeContext,
-    type_id: &TypeId,
-    tag: u32,
-) -> Option<Vec<String>> {
-    // Eventually, the ReducedIR should decide what field ordering is optimal.
-    // For now, just do it alphabetically.
-
-    let record_members = type_context.lookup_record_members(type_id, tag)?;
-    let mut field_order: Vec<String> =
-        record_members.iter().map(|(field, _type_id)| field).cloned().collect();
-    field_order.sort_unstable();
-    Some(field_order)
-}

schala-lang/language/src/reduced_ir/types.rs

@@ -50,7 +50,6 @@ pub enum Expression {
     Tuple(Vec<Expression>),
     Lookup(Lookup),
     Assign { lval: DefId, rval: Box<Expression> },
-    Access { name: String, expr: Box<Expression> },
     Callable(Callable),
     Call { f: Box<Expression>, args: Vec<Expression> },
     Conditional { cond: Box<Expression>, then_clause: Vec<Statement>, else_clause: Vec<Statement> },

schala-lang/language/src/tree_walk_eval/evaluator.rs

@@ -126,28 +126,6 @@ impl<'a, 'b> Evaluator<'a, 'b> {
             Expression::CaseMatch { box cond, alternatives } =>
                 self.case_match_expression(cond, alternatives)?,
             Expression::ReductionError(e) => return Err(e.into()),
-            Expression::Access { name, box expr } => {
-                let expr = self.expression(expr)?;
-                match expr {
-                    Primitive::Object { items, ordered_fields: Some(ordered_fields), .. } => {
-                        let idx = match ordered_fields.iter().position(|s| s == &name) {
-                            Some(idx) => idx,
-                            None => return Err(format!("Field `{}` not found", name).into()),
-                        };
-
-                        let item = match items.get(idx) {
-                            Some(item) => item,
-                            None => return Err(format!("Field lookup `{}` failed", name).into()),
-                        };
-
-                        item.clone()
-                    }
-                    e =>
-                        return Err(
-                            format!("Trying to do a field lookup on a non-object value: {:?}", e).into()
-                        ),
-                }
-            }
         })
     }
 

schala-lang/language/src/tree_walk_eval/test.rs

@@ -1,6 +1,6 @@
 #![cfg(test)]
-use pretty_assertions::assert_eq;
 use test_case::test_case;
+use pretty_assertions::assert_eq;
 
 use crate::{
     symbol_table::SymbolTable,
@@ -367,14 +367,3 @@ import Option::*
 let x = Some(9); if x is Some(q) then { q } else { 0 }"#;
     eval_assert(source, "9");
 }
-
-#[test]
-fn accessors() {
-    let source = r#"
-type Klewos = Klewos { a: Int, b: String }
-let value = Klewos::Klewos { a: 50, b: "nah" }
-(value.a, value.b)
-    "#;
-
-    eval_assert(source, r#"(50, "nah")"#);
-}