parse lv2 commands' split/index automatically
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1 changed files with 47 additions and 18 deletions
65
src/lang.zig
65
src/lang.zig
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@ -366,28 +366,57 @@ pub const Lang = struct {
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) !void {
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// Based on the command struct fields, we can parse the arguments.
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var cmd = try self.allocator.create(command_struct);
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const is_lv2_command = switch (command_struct.base_tag) {
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.noop, .load, .quicksave, .runqs => false,
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else => command_struct.command_type == .lv2_command,
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};
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inline for (@typeInfo(command_struct).Struct.fields) |cmd_field| {
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comptime {
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if (std.mem.eql(u8, cmd_field.name, "base")) {
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continue;
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}
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// TODO: crash when no arguments are left but we still need
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// arguments...
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if (is_lv2_command) {
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cmd.split = try std.fmt.parseInt(usize, tok_it.next().?, 10);
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cmd.index = try std.fmt.parseInt(usize, tok_it.next().?, 10);
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inline for (@typeInfo(@typeOf(command_struct.parameters)).Struct.fields) |cmd_field| {
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const arg = tok_it.next().?;
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const argument_value = switch (cmd_field.field_type) {
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f32 => try std.fmt.parseFloat(f32, arg),
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else => @compileError("LV2 parameter struct can only have f32 fields"),
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};
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std.debug.warn("parsing {}, arg of type {} => {}\n", .{
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@typeName(command_struct),
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@typeName(@TypeOf(argument_value)),
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argument_value,
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});
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@field(cmd.params, cmd_field.name) = argument_value;
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}
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} else {
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inline for (@typeInfo(command_struct).Struct.fields) |cmd_field| {
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comptime {
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if (std.mem.eql(u8, cmd_field.name, "base")) {
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continue;
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}
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}
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const arg = tok_it.next().?;
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const argument_value = switch (cmd_field.field_type) {
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usize => try std.fmt.parseInt(usize, arg, 10),
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i32 => try std.fmt.parseInt(i32, arg, 10),
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f32 => try std.fmt.parseFloat(f32, arg),
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[]const u8 => try self.allocator.dupe(u8, arg),
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else => @panic("Invalid parameter type (" ++ @typeName(cmd_field.field_type) ++ ") left on command struct " ++ @typeName(command_struct) ++ "."),
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};
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// TODO: crash when no arguments are left but we still need
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// arguments...
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const arg = tok_it.next().?;
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const argument_value = switch (cmd_field.field_type) {
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usize => try std.fmt.parseInt(usize, arg, 10),
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i32 => try std.fmt.parseInt(i32, arg, 10),
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f32 => try std.fmt.parseFloat(f32, arg),
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[]const u8 => try self.allocator.dupe(u8, arg),
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else => @panic("Invalid parameter type (" ++ @typeName(cmd_field.field_type) ++ ") left on command struct " ++ @typeName(command_struct) ++ "."),
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};
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std.debug.warn("parsing {}, arg of type {} => {}\n", .{
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@typeName(command_struct),
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@typeName(@TypeOf(argument_value)),
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argument_value,
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});
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std.debug.warn("parsing {}, arg of type {} => {}\n", .{ @typeName(command_struct), @typeName(@TypeOf(argument_value)), argument_value });
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@field(cmd, cmd_field.name) = argument_value;
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@field(cmd.params, cmd_field.name) = argument_value;
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}
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}
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cmd.base.tag = command_struct.base_tag;
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