remove unused code off parser

src/lang.zig

@@ -335,7 +335,6 @@ pub const KeywordMap = std.StringHashMap(CommandType);
 /// A parser.
 pub const Lang = struct {
     allocator: *std.mem.Allocator,
-    keywords: KeywordMap,
 
     has_error: bool = false,
     line: usize = 0,
@@ -343,105 +342,15 @@ pub const Lang = struct {
     pub fn init(allocator: *std.mem.Allocator) Lang {
         return Lang{
             .allocator = allocator,
-            .keywords = KeywordMap.init(allocator),
         };
     }
 
-    pub fn deinit(self: *Lang) void {
+    pub fn deinit(self: *Lang) void {}
-        self.keywords.deinit();
-    }
 
     pub fn reset(self: *Lang) void {
         self.has_error = false;
         self.line = 0;
     }
-
-    fn fillKeywords(self: *Lang) !void {
-        inline for (@typeInfo(NewCommand).Struct.decls) |cmd_struct_decl| {
-            switch (cmd_struct_decl.data) {
-                .Type => |typ| switch (@typeInfo(typ)) {
-                    .Struct => {},
-                    else => continue,
-                },
-                else => continue,
-            }
-
-            const struct_name = cmd_struct_decl.name;
-
-            comptime var lowered_command_name = [_]u8{0} ** struct_name.len;
-            comptime {
-                for (struct_name) |c, i| {
-                    lowered_command_name[i] = std.ascii.toLower(c);
-                }
-            }
-
-            _ = try self.keywords.put(&lowered_command_name, @field(CommandType, struct_name));
-        }
-    }
-
-    pub fn getCommand(self: *Lang, stmt: []const u8) ?CommandType {
-        var kv_opt = self.keywords.get(stmt);
-
-        if (kv_opt) |kv| {
-            return kv.value;
-        } else {
-            return null;
-        }
-    }
-
-    fn expectAny(self: *Lang, count: usize, args: ArgList) !void {
-        if (args.items.len != count) {
-            self.doError("expected {} arguments, found {}", .{ count, args.items.len });
-            return error.ArgRequired;
-        }
-    }
-
-    fn expectSingle(self: *Lang, args: ArgList) !void {
-        return try self.expectAny(1, args);
-    }
-
-    fn expectFloat(self: *Lang, count: usize, args: ArgList) !void {
-        var i: usize = 0;
-
-        if (args.items.len != count) {
-            self.doError("expected {} arguments, found {}", .{ count, args.items.len });
-            return error.ArgRequired;
-        }
-
-        while (i < count) : (i += 1) {
-            var arg = args.items[i];
-            _ = std.fmt.parseFloat(f32, arg) catch |err| {
-                std.debug.warn("failed to parse f32: {}\n", .{err});
-                return error.FloatParseFail;
-            };
-        }
-    }
-
-    fn validateCommand(self: *Lang, cmd: Command) !void {
-        switch (cmd.command) {
-            .Quicksave, .Noop => {},
-            .Load, .RunQS => try self.expectSingle(cmd.args),
-            .Amp => try self.expectFloat(3, cmd.args),
-            .RFlanger => try self.expectFloat(4, cmd.args),
-            .Eq => try self.expectFloat(5, cmd.args),
-            .Phaser => try self.expectFloat(6, cmd.args),
-            .Mbeq => try self.expectFloat(17, cmd.args),
-            .Chorus => try self.expectFloat(8, cmd.args),
-            .PitchScaler => try self.expectFloat(3, cmd.args),
-            .Reverb => try self.expectFloat(12, cmd.args),
-            .Highpass => try self.expectFloat(5, cmd.args),
-            .Delay => try self.expectFloat(12, cmd.args),
-            .Vinyl => try self.expectFloat(7, cmd.args),
-            .RevDelay => try self.expectFloat(7, cmd.args),
-            .Noise => try self.expectFloat(4, cmd.args),
-            .WildNoise => try self.expectFloat(4, cmd.args),
-            .Write => try self.expectFloat(3, cmd.args),
-            .Rotate => try self.expectAny(2, cmd.args),
-            .Embed => try self.expectAny(3, cmd.args),
-            else => std.debug.warn("WARN unchecked command {}\n", .{cmd.command}),
-        }
-    }
-
     fn doError(self: *Lang, comptime fmt: []const u8, args: var) void {
         std.debug.warn("error at line {}: ", .{self.line});
         std.debug.warn(fmt, args);