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remove unused code off parser

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Luna 2020-05-31 16:57:12 -03:00
parent 94c9695110
commit b21960d372
1 changed files with 1 additions and 92 deletions
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93
src/lang.zig
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@ -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 {
self.keywords.deinit();
}
pub fn deinit(self: *Lang) void {}
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);