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FEATURE: Initial xml export via a DSL.

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This commit is contained in:
Jeremy Wall 2018-12-11 17:35:12 -06:00
parent b91fe1550b
commit 3d017a76da
2 changed files with 54 additions and 6 deletions
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26
examples/test_xml.ucg Normal file
View File

@ -0,0 +1,26 @@
let make_element = macro(name, attrs, children) => {
name = name,
attrs = attrs,
children = children,
};
let doc = {
root = make_element(
"top",
{id = "foo"},
[
make_element(
"child1",
{ attr1 = "value1", attr2 = "value2"},
[
"inner text content",
make_element(
"grandchild",
{},
[{
text = "Another text node",
}]),
])]),
};
out xml doc;

34
src/convert/xml.rs
View File

@ -1,3 +1,17 @@
// Copyright 2018 Jeremy Wall <jeremy@marzhillstudios.com>
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
// http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
use std;
use std::error::Error;
use std::io::Write;
@ -72,14 +86,20 @@ impl XmlConverter {
//}
if field.val == "attrs" {
// This should be a tuple.
attrs = Some(Self::get_tuple_val(val.as_ref())?);
if !val.is_empty() {
attrs = Some(Self::get_tuple_val(val.as_ref())?);
}
}
if field.val == "children" {
// This should be a list of tuples.
children = Some(Self::get_list_val(val.as_ref())?);
if !val.is_empty() {
children = Some(Self::get_list_val(val.as_ref())?);
}
}
if field.val == "text" {
text = Some(Self::get_str_val(val.as_ref())?);
if !val.is_empty() {
text = Some(Self::get_str_val(val.as_ref())?);
}
}
}
if name.is_some() && text.is_some() {
@ -93,6 +113,9 @@ impl XmlConverter {
let mut start = XmlEvent::start_element(name.unwrap());
if attrs.is_some() {
for (ref name, ref val) in attrs.unwrap().iter() {
if val.is_empty() {
continue;
}
start = start.attr(name.val.as_ref(), Self::get_str_val(val.as_ref())?);
}
}
@ -107,8 +130,7 @@ impl XmlConverter {
if text.is_some() {
w.write(XmlEvent::characters(text.unwrap()))?;
}
}
if let Val::Str(ref s) = v {
} else if let Val::Str(ref s) = v {
w.write(XmlEvent::characters(s.as_ref()))?;
} else {
return Err(Box::new(BuildError::new(
@ -127,7 +149,7 @@ impl XmlConverter {
let mut standalone: Option<bool> = None;
let mut root: Option<Rc<Val>> = None;
for &(ref name, ref val) in fs.iter() {
if name.val == "versin" {
if name.val == "version" {
version = Some(Self::get_str_val(val)?);
}
if name.val == "encoding" {