mirror of https://github.com/odrling/Aegisub
79 lines
2.5 KiB
Plaintext
79 lines
2.5 KiB
Plaintext
|
-- Copyright (c) 2014, Thomas Goyne <plorkyeran@aegisub.org>
|
||
|
|
--
|
||
|
|
-- Permission to use, copy, modify, and distribute this software for any
|
||
|
|
-- purpose with or without fee is hereby granted, provided that the above
|
||
|
|
-- copyright notice and this permission notice appear in all copies.
|
||
|
|
--
|
||
|
|
-- THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
|
||
|
|
-- WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
|
||
|
|
-- MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
|
||
|
|
-- ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
|
||
|
|
-- WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
|
||
|
|
-- ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
|
||
|
|
-- OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
|
||
|
|
--
|
||
|
|
-- Aegisub Project http://www.aegisub.org/
|
||
|
|
|
||
|
|
assert = assert
|
||
|
|
error = error
|
||
|
|
select = select
|
||
|
|
tostring = tostring
|
||
|
|
type = type
|
||
|
|
|
||
|
|
is_type = (v, ty, expected) ->
|
||
|
|
ty == expected or (ty == 'table' and v.__class and v.__class.__name == expected)
|
||
|
|
|
||
|
|
(argfmt) ->
|
||
|
|
assert type(argfmt) == 'string'
|
||
|
|
min_args = 0
|
||
|
|
max_args = 0
|
||
|
|
checks = {}
|
||
|
|
for arg in argfmt\gmatch '[^ ]+'
|
||
|
|
if arg == '...'
|
||
|
|
max_args = nil
|
||
|
|
break
|
||
|
|
|
||
|
|
max_args += 1
|
||
|
|
|
||
|
|
optional = arg\sub(1, 1) == '?'
|
||
|
|
if optional
|
||
|
|
arg = arg\sub 2
|
||
|
|
else
|
||
|
|
min_args += 1
|
||
|
|
|
||
|
|
if arg\find '|'
|
||
|
|
types = [ty for ty in arg\gmatch '[^|]+']
|
||
|
|
checks[max_args] = (i, v) ->
|
||
|
|
if v == nil
|
||
|
|
return if optional
|
||
|
|
error "Argument ##{i} should be a #{arg}, is nil", 4
|
||
|
|
ty = type v
|
||
|
|
for argtype in *types
|
||
|
|
return if is_type v, ty, argtype
|
||
|
|
error "Argument ##{i} should be a #{arg}, is #{ty} (#{v})", 3
|
||
|
|
else
|
||
|
|
checks[max_args] = (i, v) ->
|
||
|
|
if v == nil
|
||
|
|
return if optional
|
||
|
|
error "Argument ##{i} should be a #{arg}, is nil", 4
|
||
|
|
ty = type v
|
||
|
|
return if is_type v, ty, arg
|
||
|
|
error "Argument ##{i} should be a #{arg}, is #{ty} (#{v})", 3
|
||
|
|
|
||
|
|
(fn) -> (...) ->
|
||
|
|
arg_count = select '#', ...
|
||
|
|
if arg_count < min_args or (max_args and arg_count > max_args)
|
||
|
|
if min_args == max_args
|
||
|
|
error "Expected #{min_args} arguments, got #{arg_count}", 3
|
||
|
|
else if max_args
|
||
|
|
error "Expected #{min_args}-#{max_args} arguments, got #{arg_count}", 3
|
||
|
|
else
|
||
|
|
error "Expected at least #{min_args} arguments, got #{arg_count}", 3
|
||
|
|
|
||
|
|
for i=1,arg_count
|
||
|
|
if not checks[i] then break
|
||
|
|
checks[i] i, select i, ...
|
||
|
|
|
||
|
|
fn ...
|
||
|
|
|