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26 lines
1 KiB
Elixir
26 lines
1 KiB
Elixir
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defmodule Textile.ParserHelpers do
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defmacro attribute_parser(name, open_token, close_token, open_tag, close_tag) do
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quote do
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defp unquote(name)(parser, [{unquote(open_token), open} | r_tokens]) do
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with {:ok, tree, [{unquote(close_token), _close} | r2_tokens]} <- well_formed(parser, r_tokens) do
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{:ok, [markup: unquote(open_tag)] ++ tree ++ [markup: unquote(close_tag)], r2_tokens}
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else
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_ ->
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{:ok, [text: escape_html(open)], r_tokens}
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end
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end
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defp unquote(name)(parser, [{unquote(:"b_#{open_token}"), open} | r_tokens]) do
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with {:ok, tree, [{unquote(:"b_#{close_token}"), _close} | r2_tokens]} <- well_formed(parser, r_tokens) do
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{:ok, [markup: unquote(open_tag)] ++ tree ++ [markup: unquote(close_tag)], r2_tokens}
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else
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_ ->
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{:ok, [text: escape_html(open)], r_tokens}
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end
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end
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defp unquote(name)(_parser, _tokens),
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do: {:error, "Expected #{unquote(name)} tag"}
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end
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end
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end
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