remove mutability/publicability

i may implement those in a better way, which isn't V's

src/ast.zig

@@ -29,7 +29,6 @@ pub const ParamDecl = struct {
 pub const MethodData = struct {
     variable: Token,
     typ: Token,
-    mutable: bool,
 };
 
 pub const FnDecl = struct {
@@ -288,10 +287,6 @@ pub const FieldList = std.ArrayList(StructField);
 pub const StructField = struct {
     name: Token,
     typ: Token,
-
-    mutable: bool = false,
-    public: bool = false,
-    mutable_outside: bool = false,
 };
 
 pub const Struct = struct {

src/ast_printer.zig

@@ -48,11 +48,7 @@ pub fn printNode(node: *const Node, ident: usize) void {
                 const vari = method.variable.lexeme;
                 const typ = method.typ.lexeme;
 
-                if (method.mutable) {
-                    warn("(method mut {} {} {} {} (", vari, typ, name, ret_type);
-                } else {
                 warn("(method {} {} {} {} (", vari, typ, name, ret_type);
-                }
             } else {
                 warn("(fn {} {} (", name, ret_type);
             }
@@ -112,22 +108,7 @@ pub fn printNode(node: *const Node, ident: usize) void {
         .Struct => |struc| {
             print(ident, "(struct {} (\n", struc.name.lexeme);
             for (struc.fields.toSlice()) |field| {
-                printIdent(ident + 1);
+                print(ident + 1, "({} {})\n", field.name.lexeme, field.typ.lexeme);
-                if (field.mutable) {
-                    std.debug.warn("(mut ");
-                } else {
-                    std.debug.warn("(");
-                }
-
-                if (field.public) {
-                    std.debug.warn("pub ");
-                }
-
-                if (field.mutable_outside) {
-                    std.debug.warn("MUT_OUT ");
-                }
-
-                std.debug.warn("{} {})\n", field.name.lexeme, field.typ.lexeme);
             }
             print(ident, "))\n");
         },

src/parsers.zig

@@ -23,12 +23,6 @@ const Stmt = ast.Stmt;
 
 const TokenList = std.ArrayList(Token);
 
-const FieldState = struct {
-    public: bool = false,
-    mutable: bool = false,
-    mutable_outside: bool = false,
-};
-
 const operator_tokens = [_][]const u8{
     "+", "-", "*", "/", "%", ">", ">=", "<", "<=", "==",
 };
@@ -511,19 +505,12 @@ pub const Parser = struct {
         );
     }
 
-    /// parse the (v [mut] T) part of the method (defined here
+    /// parse the (v T) part of the method (defined here
     /// as a premethod)
     fn parsePreMethod(self: *@This()) !?*ast.MethodData {
         _ = try self.consumeSingle(.LeftParen);
 
-        var mutable_ref: bool = false;
         const variable = try self.consumeSingle(.Identifier);
-
-        if (self.check(.Mut)) {
-            _ = try self.consumeSingle(.Mut);
-            mutable_ref = true;
-        }
-
         const typ = try self.consumeSingle(.Identifier);
 
         _ = try self.consumeSingle(.RightParen);
@@ -533,7 +520,6 @@ pub const Parser = struct {
         method.* = ast.MethodData{
             .variable = variable,
             .typ = typ,
-            .mutable = mutable_ref,
         };
 
         return method;
@@ -581,27 +567,14 @@ pub const Parser = struct {
 
         _ = try self.consumeSingle(.LeftBrace);
 
-        var field_state = FieldState{};
-
         while (!self.check(.RightBrace)) {
-            try self.parseFieldModifiers(&field_state);
-
             const field_name = try self.consumeSingle(.Identifier);
             self.setErrContext("struct {} field {}", name, field_name);
 
             const field_type = try self.consumeSingle(.Identifier);
-
-            // we could create a FieldState on the heap and copy our current
-            // field state into a StructField.state, but copying via this makes
-            // things so much nicer.
-
             try fields.append(ast.StructField{
                 .name = field_name,
                 .typ = field_type,
-
-                .mutable = field_state.mutable,
-                .public = field_state.public,
-                .mutable_outside = field_state.mutable_outside,
             });
         }
 
@@ -610,51 +583,6 @@ pub const Parser = struct {
         return Node.mkStructDecl(self.allocator, name, fields);
     }
 
-    fn parseFieldModifiers(self: *@This(), field_state: *FieldState) !void {
-
-        // there are five access modifiers:
-        //  - none (private immutable)
-        //  - mut (private mutable)
-        //  - pub (public immutable)
-        //  - pub mut (public mutable only in module)
-        //  - pub mut mut (public mutable everywhere)
-
-        // this function takes care of that by changing the current FieldState
-        // to what the modifiers dictate.
-        switch (self.peek().typ) {
-            .Mut => {
-                // There are no oher modifiers that start with mut, so we
-                // can just go the way of marking it as mutable
-                _ = try self.consumeSingle(.Mut);
-                _ = try self.consumeSingle(.Colon);
-
-                field_state.mutable = true;
-            },
-
-            // 'pub', 'pub mut', and 'pub mut mut' are all handled here
-            .Pub => {
-                _ = try self.consumeSingle(.Pub);
-                field_state.public = true;
-
-                if (self.check(.Mut)) {
-                    _ = try self.consumeSingle(.Mut);
-
-                    field_state.mutable = true;
-                    if (self.check(.Mut)) {
-                        _ = try self.consumeSingle(.Mut);
-                        field_state.mutable_outside = true;
-                    }
-                }
-
-                _ = try self.consumeSingle(.Colon);
-            },
-
-            // if it isn't mut or pub we're likely in an identifier, just
-            // ignore it.
-            else => return,
-        }
-    }
-
     fn parseEnumDecl(self: *@This()) !*Node {
         var fields = ast.TokenList.init(self.allocator);
         errdefer fields.deinit();
@@ -848,29 +776,22 @@ pub const Parser = struct {
         // there can be two assignments coming out of this function:
         //  - an assignment to a variable with =
         //  - an update to a variable with +=, -=
-
-        // one is a statement, other is an expression. since the normal result
-        // of this is an Expr, we wrap variable assignments in an Expr as well.
-        var mutable: bool = false;
-
-        if (self.check(.Mut)) {
-            _ = try self.consumeSingle(.Mut);
-            mutable = true;
-        }
-
         var expr = try self.parseOr();
 
         if (self.compareAnyOf(&[_]TokenType{
             .Equal,      .PlusEqual, .MinusEqual, .StarEqual,
             .SlashEqual,
         })) {
-            return try self.finishAssignment(expr, mutable);
+            return try self.finishAssignment(expr);
         }
 
         return expr;
     }
 
-    fn finishAssignment(self: *@This(), expr: *Expr, mutable: bool) !*Expr {
+    fn finishAssignment(
+        self: *@This(),
+        expr: *Expr,
+    ) !*Expr {
         var op_tok = self.peek();
         _ = try self.nextToken();