598 lines
22 KiB
Rust
598 lines
22 KiB
Rust
// Copyright (c) 2017-2018 Emmanuel Gil Peyrot <linkmauve@linkmauve.fr>
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//
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// This Source Code Form is subject to the terms of the Mozilla Public
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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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macro_rules! get_attr {
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($elem:ident, $attr:tt, $type:tt) => {
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get_attr!($elem, $attr, $type, value, value.parse()?)
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};
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($elem:ident, $attr:tt, optional_empty, $value:ident, $func:expr) => {
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match $elem.attr($attr) {
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Some("") => None,
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Some($value) => Some($func),
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None => None,
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}
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};
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($elem:ident, $attr:tt, optional, $value:ident, $func:expr) => {
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match $elem.attr($attr) {
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Some($value) => Some($func),
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None => None,
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}
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};
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($elem:ident, $attr:tt, required, $value:ident, $func:expr) => {
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match $elem.attr($attr) {
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Some($value) => $func,
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None => {
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return Err(crate::util::error::Error::ParseError(concat!(
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"Required attribute '",
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$attr,
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"' missing."
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)));
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}
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}
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};
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($elem:ident, $attr:tt, default, $value:ident, $func:expr) => {
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match $elem.attr($attr) {
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Some($value) => $func,
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None => ::std::default::Default::default(),
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}
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};
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}
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macro_rules! generate_attribute {
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($(#[$meta:meta])* $elem:ident, $name:tt, {$($(#[$a_meta:meta])* $a:ident => $b:tt),+,}) => (
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generate_attribute!($(#[$meta])* $elem, $name, {$($(#[$a_meta])* $a => $b),+});
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);
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($(#[$meta:meta])* $elem:ident, $name:tt, {$($(#[$a_meta:meta])* $a:ident => $b:tt),+,}, Default = $default:ident) => (
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generate_attribute!($(#[$meta])* $elem, $name, {$($(#[$a_meta])* $a => $b),+}, Default = $default);
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);
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($(#[$meta:meta])* $elem:ident, $name:tt, {$($(#[$a_meta:meta])* $a:ident => $b:tt),+}) => (
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$(#[$meta])*
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#[derive(Debug, Clone, PartialEq)]
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pub enum $elem {
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$(
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$(#[$a_meta])*
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$a
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),+
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}
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impl ::std::str::FromStr for $elem {
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type Err = crate::util::error::Error;
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fn from_str(s: &str) -> Result<$elem, crate::util::error::Error> {
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Ok(match s {
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$($b => $elem::$a),+,
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_ => return Err(crate::util::error::Error::ParseError(concat!("Unknown value for '", $name, "' attribute."))),
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})
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}
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}
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impl ::minidom::IntoAttributeValue for $elem {
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fn into_attribute_value(self) -> Option<String> {
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Some(String::from(match self {
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$($elem::$a => $b),+
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}))
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}
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}
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);
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($(#[$meta:meta])* $elem:ident, $name:tt, {$($(#[$a_meta:meta])* $a:ident => $b:tt),+}, Default = $default:ident) => (
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$(#[$meta])*
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#[derive(Debug, Clone, PartialEq)]
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pub enum $elem {
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$(
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$(#[$a_meta])*
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$a
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),+
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}
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impl ::std::str::FromStr for $elem {
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type Err = crate::util::error::Error;
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fn from_str(s: &str) -> Result<$elem, crate::util::error::Error> {
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Ok(match s {
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$($b => $elem::$a),+,
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_ => return Err(crate::util::error::Error::ParseError(concat!("Unknown value for '", $name, "' attribute."))),
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})
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}
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}
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impl ::minidom::IntoAttributeValue for $elem {
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#[allow(unreachable_patterns)]
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fn into_attribute_value(self) -> Option<String> {
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Some(String::from(match self {
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$elem::$default => return None,
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$($elem::$a => $b),+
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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::$default
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}
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}
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);
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($(#[$meta:meta])* $elem:ident, $name:tt, ($(#[$meta_symbol:meta])* $symbol:ident => $value:tt)) => (
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$(#[$meta])*
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#[derive(Debug, Clone, PartialEq)]
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pub enum $elem {
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$(#[$meta_symbol])*
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$symbol,
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/// Value when absent.
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None,
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}
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impl ::std::str::FromStr for $elem {
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type Err = crate::util::error::Error;
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fn from_str(s: &str) -> Result<Self, crate::util::error::Error> {
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Ok(match s {
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$value => $elem::$symbol,
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_ => return Err(crate::util::error::Error::ParseError(concat!("Unknown value for '", $name, "' attribute."))),
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})
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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::$symbol => Some(String::from($value)),
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$elem::None => None
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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::None
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}
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}
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);
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($(#[$meta:meta])* $elem:ident, $name:tt, bool) => (
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$(#[$meta])*
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#[derive(Debug, Clone, PartialEq)]
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pub enum $elem {
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/// True value, represented by either 'true' or '1'.
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True,
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/// False value, represented by either 'false' or '0'.
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False,
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}
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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(match s {
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"true" | "1" => $elem::True,
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"false" | "0" => $elem::False,
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_ => return Err(crate::util::error::Error::ParseError(concat!("Unknown value for '", $name, "' attribute."))),
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})
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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::True => Some(String::from("true")),
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$elem::False => None
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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::False
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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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($(#[$meta:meta])* $elem:ident, $name:tt, $ns:ident, {$($(#[$enum_meta:meta])* $enum:ident => $enum_name:tt),+,}) => (
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generate_element_enum!($(#[$meta])* $elem, $name, $ns, {$($(#[$enum_meta])* $enum => $enum_name),+});
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);
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($(#[$meta:meta])* $elem:ident, $name:tt, $ns:ident, {$($(#[$enum_meta:meta])* $enum:ident => $enum_name:tt),+}) => (
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$(#[$meta])*
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#[derive(Debug, Clone, PartialEq)]
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pub enum $elem {
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$(
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$(#[$enum_meta])*
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$enum
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),+
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}
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impl ::try_from::TryFrom<::minidom::Element> for $elem {
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type Err = crate::util::error::Error;
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fn try_from(elem: ::minidom::Element) -> Result<$elem, crate::util::error::Error> {
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check_ns_only!(elem, $name, $ns);
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check_no_children!(elem, $name);
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check_no_attributes!(elem, $name);
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Ok(match elem.name() {
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$($enum_name => $elem::$enum,)+
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_ => return Err(crate::util::error::Error::ParseError(concat!("This is not a ", $name, " element."))),
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})
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}
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}
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impl From<$elem> for ::minidom::Element {
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fn from(elem: $elem) -> ::minidom::Element {
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::minidom::Element::builder(
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match elem {
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$($elem::$enum => $enum_name,)+
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}
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)
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.ns(crate::ns::$ns)
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.build()
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}
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}
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);
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}
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macro_rules! generate_attribute_enum {
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($(#[$meta:meta])* $elem:ident, $name:tt, $ns:ident, $attr:tt, {$($(#[$enum_meta:meta])* $enum:ident => $enum_name:tt),+,}) => (
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generate_attribute_enum!($(#[$meta])* $elem, $name, $ns, $attr, {$($(#[$enum_meta])* $enum => $enum_name),+});
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);
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($(#[$meta:meta])* $elem:ident, $name:tt, $ns:ident, $attr:tt, {$($(#[$enum_meta:meta])* $enum:ident => $enum_name:tt),+}) => (
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$(#[$meta])*
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#[derive(Debug, Clone, PartialEq)]
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pub enum $elem {
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$(
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$(#[$enum_meta])*
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$enum
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),+
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}
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impl ::try_from::TryFrom<::minidom::Element> for $elem {
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type Err = crate::util::error::Error;
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fn try_from(elem: ::minidom::Element) -> Result<$elem, crate::util::error::Error> {
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check_ns_only!(elem, $name, $ns);
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check_no_children!(elem, $name);
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check_no_unknown_attributes!(elem, $name, [$attr]);
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Ok(match get_attr!(elem, $attr, required) {
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$($enum_name => $elem::$enum,)+
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_ => return Err(crate::util::error::Error::ParseError(concat!("Invalid ", $name, " ", $attr, " value."))),
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})
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}
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}
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impl From<$elem> for ::minidom::Element {
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fn from(elem: $elem) -> ::minidom::Element {
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::minidom::Element::builder($name)
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.ns(crate::ns::$ns)
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.attr($attr, match elem {
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$($elem::$enum => $enum_name,)+
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})
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.build()
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}
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}
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);
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}
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macro_rules! check_self {
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($elem:ident, $name:tt, $ns:ident) => {
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check_self!($elem, $name, $ns, $name);
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};
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($elem:ident, $name:tt, $ns:ident, $pretty_name:tt) => {
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if !$elem.is($name, crate::ns::$ns) {
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return Err(crate::util::error::Error::ParseError(concat!(
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"This is not a ",
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$pretty_name,
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" element."
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)));
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}
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};
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}
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macro_rules! check_ns_only {
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($elem:ident, $name:tt, $ns:ident) => {
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if !$elem.has_ns(crate::ns::$ns) {
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return Err(crate::util::error::Error::ParseError(concat!(
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"This is not a ",
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$name,
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" element."
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)));
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}
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};
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}
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macro_rules! check_no_children {
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($elem:ident, $name:tt) => {
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#[cfg(not(feature = "disable-validation"))]
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for _ in $elem.children() {
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return Err(crate::util::error::Error::ParseError(concat!(
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"Unknown child in ",
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$name,
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" element."
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)));
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}
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};
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}
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macro_rules! check_no_attributes {
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($elem:ident, $name:tt) => {
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#[cfg(not(feature = "disable-validation"))]
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for _ in $elem.attrs() {
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return Err(crate::util::error::Error::ParseError(concat!(
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"Unknown attribute in ",
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$name,
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" element."
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)));
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}
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};
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}
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macro_rules! check_no_unknown_attributes {
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($elem:ident, $name:tt, [$($attr:tt),*]) => (
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#[cfg(not(feature = "disable-validation"))]
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for (_attr, _) in $elem.attrs() {
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$(
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if _attr == $attr {
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continue;
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}
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)*
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return Err(crate::util::error::Error::ParseError(concat!("Unknown attribute in ", $name, " element.")));
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}
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);
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}
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macro_rules! generate_empty_element {
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($(#[$meta:meta])* $elem:ident, $name:tt, $ns:ident) => (
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$(#[$meta])*
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#[derive(Debug, Clone)]
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pub struct $elem;
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impl ::try_from::TryFrom<::minidom::Element> for $elem {
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type Err = crate::util::error::Error;
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fn try_from(elem: ::minidom::Element) -> Result<$elem, crate::util::error::Error> {
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check_self!(elem, $name, $ns);
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check_no_children!(elem, $name);
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check_no_attributes!(elem, $name);
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Ok($elem)
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}
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}
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impl From<$elem> for ::minidom::Element {
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fn from(_: $elem) -> ::minidom::Element {
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::minidom::Element::builder($name)
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.ns(crate::ns::$ns)
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.build()
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}
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}
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);
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}
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macro_rules! generate_id {
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($(#[$meta:meta])* $elem:ident) => (
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$(#[$meta])*
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#[derive(Debug, Clone, PartialEq, Eq, Hash)]
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pub struct $elem(pub String);
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impl ::std::str::FromStr for $elem {
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type Err = crate::util::error::Error;
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fn from_str(s: &str) -> Result<$elem, crate::util::error::Error> {
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// TODO: add a way to parse that differently when needed.
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Ok($elem(String::from(s)))
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}
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}
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impl ::minidom::IntoAttributeValue for $elem {
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fn into_attribute_value(self) -> Option<String> {
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Some(self.0)
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}
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}
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);
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}
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macro_rules! generate_elem_id {
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($(#[$meta:meta])* $elem:ident, $name:tt, $ns:ident) => (
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$(#[$meta])*
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#[derive(Debug, Clone, PartialEq, Eq, Hash)]
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pub struct $elem(pub String);
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impl ::std::str::FromStr for $elem {
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type Err = crate::util::error::Error;
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fn from_str(s: &str) -> Result<$elem, crate::util::error::Error> {
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// TODO: add a way to parse that differently when needed.
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Ok($elem(String::from(s)))
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}
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}
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impl ::try_from::TryFrom<::minidom::Element> for $elem {
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type Err = crate::util::error::Error;
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fn try_from(elem: ::minidom::Element) -> Result<$elem, crate::util::error::Error> {
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check_self!(elem, $name, $ns);
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check_no_children!(elem, $name);
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check_no_attributes!(elem, $name);
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// TODO: add a way to parse that differently when needed.
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Ok($elem(elem.text()))
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}
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}
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impl From<$elem> for ::minidom::Element {
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fn from(elem: $elem) -> ::minidom::Element {
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::minidom::Element::builder($name)
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.ns(crate::ns::$ns)
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.append(elem.0)
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.build()
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}
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}
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);
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}
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macro_rules! start_decl {
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(Vec, $type:ty) => (
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Vec<$type>
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);
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(Option, $type:ty) => (
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Option<$type>
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);
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(Required, $type:ty) => (
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$type
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);
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}
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macro_rules! start_parse_elem {
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($temp:ident: Vec) => {
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let mut $temp = Vec::new();
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};
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($temp:ident: Option) => {
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let mut $temp = None;
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};
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($temp:ident: Required) => {
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let mut $temp = None;
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};
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}
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macro_rules! do_parse {
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($elem:ident, Element) => {
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$elem.clone()
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};
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($elem:ident, String) => {
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$elem.text()
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};
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($elem:ident, $constructor:ident) => {
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$constructor::try_from($elem.clone())?
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};
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}
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macro_rules! do_parse_elem {
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($temp:ident: Vec = $constructor:ident => $elem:ident, $name:tt, $parent_name:tt) => {
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$temp.push(do_parse!($elem, $constructor));
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};
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($temp:ident: Option = $constructor:ident => $elem:ident, $name:tt, $parent_name:tt) => {
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if $temp.is_some() {
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return Err(crate::util::error::Error::ParseError(concat!(
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"Element ",
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$parent_name,
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" must not have more than one ",
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$name,
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" child."
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)));
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}
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$temp = Some(do_parse!($elem, $constructor));
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};
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($temp:ident: Required = $constructor:ident => $elem:ident, $name:tt, $parent_name:tt) => {
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if $temp.is_some() {
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return Err(crate::util::error::Error::ParseError(concat!(
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"Element ",
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$parent_name,
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" must not have more than one ",
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$name,
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" child."
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)));
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}
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$temp = Some(do_parse!($elem, $constructor));
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};
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}
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macro_rules! finish_parse_elem {
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($temp:ident: Vec = $name:tt, $parent_name:tt) => {
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$temp
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};
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($temp:ident: Option = $name:tt, $parent_name:tt) => {
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$temp
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};
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($temp:ident: Required = $name:tt, $parent_name:tt) => {
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$temp.ok_or(crate::util::error::Error::ParseError(concat!(
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"Missing child ",
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$name,
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" in ",
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$parent_name,
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" element."
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)))?
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};
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}
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macro_rules! generate_serialiser {
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($parent:ident, $elem:ident, Required, String, ($name:tt, $ns:ident)) => {
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::minidom::Element::builder($name)
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.ns(crate::ns::$ns)
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.append($parent.$elem)
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.build()
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};
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($parent:ident, $elem:ident, Option, String, ($name:tt, $ns:ident)) => {
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|
$parent.$elem.map(|elem| {
|
|
::minidom::Element::builder($name)
|
|
.ns(crate::ns::$ns)
|
|
.append(elem)
|
|
.build()
|
|
})
|
|
};
|
|
($parent:ident, $elem:ident, $_:ident, $constructor:ident, ($name:tt, $ns:ident)) => {
|
|
$parent.$elem
|
|
};
|
|
}
|
|
|
|
macro_rules! generate_element {
|
|
($(#[$meta:meta])* $elem:ident, $name:tt, $ns:ident, attributes: [$($(#[$attr_meta:meta])* $attr:ident: $attr_type:ty = $attr_name:tt => $attr_action:tt),+,]) => (
|
|
generate_element!($(#[$meta])* $elem, $name, $ns, attributes: [$($(#[$attr_meta])* $attr: $attr_type = $attr_name => $attr_action),*], children: []);
|
|
);
|
|
($(#[$meta:meta])* $elem:ident, $name:tt, $ns:ident, attributes: [$($(#[$attr_meta:meta])* $attr:ident: $attr_type:ty = $attr_name:tt => $attr_action:tt),+]) => (
|
|
generate_element!($(#[$meta])* $elem, $name, $ns, attributes: [$($(#[$attr_meta])* $attr: $attr_type = $attr_name => $attr_action),*], children: []);
|
|
);
|
|
($(#[$meta:meta])* $elem:ident, $name:tt, $ns:ident, children: [$($(#[$child_meta:meta])* $child_ident:ident: $coucou:tt<$child_type:ty> = ($child_name:tt, $child_ns:ident) => $child_constructor:ident),*]) => (
|
|
generate_element!($(#[$meta])* $elem, $name, $ns, attributes: [], children: [$($(#[$child_meta])* $child_ident: $coucou<$child_type> = ($child_name, $child_ns) => $child_constructor),*]);
|
|
);
|
|
($(#[$meta:meta])* $elem:ident, $name:tt, $ns:ident, attributes: [$($(#[$attr_meta:meta])* $attr:ident: $attr_type:ty = $attr_name:tt => $attr_action:tt),*,], children: [$($(#[$child_meta:meta])* $child_ident:ident: $coucou:tt<$child_type:ty> = ($child_name:tt, $child_ns:ident) => $child_constructor:ident),*]) => (
|
|
generate_element!($(#[$meta])* $elem, $name, $ns, attributes: [$($(#[$attr_meta])* $attr: $attr_type = $attr_name => $attr_action),*], children: [$($(#[$child_meta])* $child_ident: $coucou<$child_type> = ($child_name, $child_ns) => $child_constructor),*]);
|
|
);
|
|
($(#[$meta:meta])* $elem:ident, $name:tt, $ns:ident, text: ($(#[$text_meta:meta])* $text_ident:ident: $codec:ident < $text_type:ty >)) => (
|
|
generate_element!($(#[$meta])* $elem, $name, $ns, attributes: [], children: [], text: ($(#[$text_meta])* $text_ident: $codec<$text_type>));
|
|
);
|
|
($(#[$meta:meta])* $elem:ident, $name:tt, $ns:ident, attributes: [$($(#[$attr_meta:meta])* $attr:ident: $attr_type:ty = $attr_name:tt => $attr_action:tt),+], text: ($(#[$text_meta:meta])* $text_ident:ident: $codec:ident < $text_type:ty >)) => (
|
|
generate_element!($(#[$meta])* $elem, $name, $ns, attributes: [$($(#[$attr_meta])* $attr: $attr_type = $attr_name => $attr_action),*], children: [], text: ($(#[$text_meta])* $text_ident: $codec<$text_type>));
|
|
);
|
|
($(#[$meta:meta])* $elem:ident, $name:tt, $ns:ident, attributes: [$($(#[$attr_meta:meta])* $attr:ident: $attr_type:ty = $attr_name:tt => $attr_action:tt),*], children: [$($(#[$child_meta:meta])* $child_ident:ident: $coucou:tt<$child_type:ty> = ($child_name:tt, $child_ns:ident) => $child_constructor:ident),*] $(, text: ($(#[$text_meta:meta])* $text_ident:ident: $codec:ident < $text_type:ty >))*) => (
|
|
$(#[$meta])*
|
|
#[derive(Debug, Clone)]
|
|
pub struct $elem {
|
|
$(
|
|
$(#[$attr_meta])*
|
|
pub $attr: $attr_type,
|
|
)*
|
|
$(
|
|
$(#[$child_meta])*
|
|
pub $child_ident: start_decl!($coucou, $child_type),
|
|
)*
|
|
$(
|
|
$(#[$text_meta])*
|
|
pub $text_ident: $text_type,
|
|
)*
|
|
}
|
|
|
|
impl ::try_from::TryFrom<::minidom::Element> for $elem {
|
|
type Err = crate::util::error::Error;
|
|
|
|
fn try_from(elem: ::minidom::Element) -> Result<$elem, crate::util::error::Error> {
|
|
check_self!(elem, $name, $ns);
|
|
check_no_unknown_attributes!(elem, $name, [$($attr_name),*]);
|
|
$(
|
|
start_parse_elem!($child_ident: $coucou);
|
|
)*
|
|
for _child in elem.children() {
|
|
$(
|
|
if _child.is($child_name, crate::ns::$child_ns) {
|
|
do_parse_elem!($child_ident: $coucou = $child_constructor => _child, $child_name, $name);
|
|
continue;
|
|
}
|
|
)*
|
|
return Err(crate::util::error::Error::ParseError(concat!("Unknown child in ", $name, " element.")));
|
|
}
|
|
Ok($elem {
|
|
$(
|
|
$attr: get_attr!(elem, $attr_name, $attr_action),
|
|
)*
|
|
$(
|
|
$child_ident: finish_parse_elem!($child_ident: $coucou = $child_name, $name),
|
|
)*
|
|
$(
|
|
$text_ident: $codec::decode(&elem.text())?,
|
|
)*
|
|
})
|
|
}
|
|
}
|
|
|
|
impl From<$elem> for ::minidom::Element {
|
|
fn from(elem: $elem) -> ::minidom::Element {
|
|
::minidom::Element::builder($name)
|
|
.ns(crate::ns::$ns)
|
|
$(
|
|
.attr($attr_name, elem.$attr)
|
|
)*
|
|
$(
|
|
.append(generate_serialiser!(elem, $child_ident, $coucou, $child_constructor, ($child_name, $child_ns)))
|
|
)*
|
|
$(
|
|
.append($codec::encode(&elem.$text_ident))
|
|
)*
|
|
.build()
|
|
}
|
|
}
|
|
);
|
|
}
|
|
|
|
#[cfg(test)]
|
|
macro_rules! assert_size (
|
|
($t:ty, $sz:expr) => (
|
|
assert_eq!(::std::mem::size_of::<$t>(), $sz);
|
|
);
|
|
);
|