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jingle_rtp: Put Channel code into a macro, to generate it automatically.
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parent
a62b184d54
commit
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2 changed files with 28 additions and 31 deletions
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@ -4,10 +4,6 @@
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// License, v. 2.0. If a copy of the MPL was not distributed with this
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// file, You can obtain one at http://mozilla.org/MPL/2.0/.
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use std::num::ParseIntError;
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use std::str::FromStr;
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use minidom::IntoAttributeValue;
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generate_element!(
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/// Wrapper element describing an RTP session.
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Description, "description", JINGLE_RTP,
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@ -28,33 +24,10 @@ generate_element!(
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]
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);
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/// The number of channels.
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#[derive(Debug, Clone)]
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pub struct Channels(pub u8);
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impl Default for Channels {
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fn default() -> Channels {
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Channels(1)
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}
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}
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impl FromStr for Channels {
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type Err = ParseIntError;
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fn from_str(s: &str) -> Result<Channels, ParseIntError> {
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Ok(Channels(u8::from_str(s)?))
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}
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}
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impl IntoAttributeValue for Channels {
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fn into_attribute_value(self) -> Option<String> {
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if self.0 == 1 {
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None
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} else {
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Some(format!("{}", self.0))
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}
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}
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}
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generate_attribute!(
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/// The number of channels.
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Channels, "channels", u8, Default = 1
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);
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generate_element!(
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/// An encoding that can be used for an RTP stream.
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@ -191,6 +191,30 @@ macro_rules! generate_attribute {
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}
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}
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);
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($(#[$meta:meta])* $elem:ident, $name:tt, $type:tt, Default = $default:expr) => (
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$(#[$meta])*
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#[derive(Debug, Clone, PartialEq)]
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pub struct $elem(pub $type);
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impl ::std::str::FromStr for $elem {
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type Err = crate::util::error::Error;
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fn from_str(s: &str) -> Result<Self, crate::util::error::Error> {
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Ok($elem($type::from_str(s)?))
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}
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}
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impl ::minidom::IntoAttributeValue for $elem {
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fn into_attribute_value(self) -> Option<String> {
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match self {
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$elem($default) => None,
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$elem(value) => Some(format!("{}", value)),
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}
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}
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}
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impl ::std::default::Default for $elem {
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fn default() -> $elem {
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$elem($default)
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}
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}
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);
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}
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macro_rules! generate_element_enum {
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