remove enums

src/codegen_x86_64.rs

@@ -514,9 +514,6 @@ _builtin_environ:
             Stmt::Struct { .. } => {
                 // handled in SymbolTable
             }
-            Stmt::Enum { .. } => {
-                // handled in SymbolTable
-            }
         }
         Ok(())
     }

src/parser.rs

@@ -77,10 +77,6 @@ pub enum Stmt {
         name: Token,
         fields: Vec<Param>,
     },
-    Enum {
-        name: Token,
-        variants: Vec<Token>,
-    },
 }
 
 pub static NEXT_EXPR_ID: AtomicUsize = AtomicUsize::new(0);
@@ -195,9 +191,6 @@ impl Parser {
             if self.match_token(&[TokenType::KeywordStruct]) {
                 return self.struct_declaration();
             }
-            if self.match_token(&[TokenType::KeywordEnum]) {
-                return self.enum_declaration();
-            }
             return error!(
                 self.peek().loc,
                 "statements not allowed outside function body"
@@ -281,21 +274,6 @@ impl Parser {
         Ok(Stmt::Struct { name, fields })
     }
 
-    fn enum_declaration(&mut self) -> Result<Stmt, ZernError> {
-        let name = self.consume(TokenType::Identifier, "expected enum name")?;
-
-        self.consume(TokenType::Indent, "expected indent after enum name")?;
-
-        let mut variants = vec![];
-        while !self.eof() && !self.check(&TokenType::Dedent) {
-            variants.push(self.consume(TokenType::Identifier, "expected variant name")?);
-        }
-
-        self.consume(TokenType::Dedent, "expected dedent after enum variants")?;
-
-        Ok(Stmt::Enum { name, variants })
-    }
-
     fn const_declaration(&mut self) -> Result<Stmt, ZernError> {
         let name = self.consume(TokenType::Identifier, "expected const name")?;
         self.consume(TokenType::Equal, "expected '=' after const name")?;

src/symbol_table.rs

@@ -144,16 +144,6 @@ impl SymbolTable {
 
                 self.structs.insert(name.lexeme.clone(), fields_map);
             }
-            Stmt::Enum { name, variants } => {
-                // TODO: distinct enum types
-                for (i, v) in variants.iter().enumerate() {
-                    let variant = format!("{}.{}", name.lexeme, v.lexeme);
-                    if self.is_name_defined(&variant) {
-                        return error!(name.loc, format!("tried to redefine '{}'", variant));
-                    }
-                    self.constants.insert(variant, i as i64);
-                }
-            }
             _ => {}
         }
         Ok(())

src/tokenizer.rs

@@ -58,7 +58,6 @@ pub enum TokenType {
     KeywordStruct,
     KeywordNew,
     KeywordAs,
-    KeywordEnum,
 
     Indent,
     Dedent,
@@ -395,7 +394,6 @@ impl Tokenizer {
             "struct" => TokenType::KeywordStruct,
             "new" => TokenType::KeywordNew,
             "as" => TokenType::KeywordAs,
-            "enum" => TokenType::KeywordEnum,
             "true" => TokenType::True,
             "false" => TokenType::False,
             _ => TokenType::Identifier,

src/typechecker.rs

@@ -361,7 +361,6 @@ impl<'a> TypeChecker<'a> {
                     }
                 }
             }
-            Stmt::Enum { .. } => {}
         }
         Ok(())
     }