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First attempt at an implementation of the new breadcrumbs for blocks/inline partials.

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This commit is contained in:
Tom Alexander
2020-05-25 19:11:14 -04:00
parent 83623897af
commit 6845df7f96
2 changed files with 125 additions and 27 deletions
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102
src/renderer/renderer.rs
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@@ -76,14 +76,18 @@ impl<'a> DustRenderer<'a> {
};
let extracted_inline_partials = extract_inline_partials(main_template);
let new_blocks = InlinePartialTreeElement::new(blocks, extracted_inline_partials);
self.render_body(&main_template.contents, breadcrumbs, &new_blocks)
let new_block_context = BlockContext {
breadcrumbs: breadcrumbs,
blocks: &new_blocks,
};
self.render_body(&main_template.contents, breadcrumbs, &new_block_context)
}
fn render_maybe_body(
&'a self,
body: &'a Option<Body>,
breadcrumbs: &Vec<&'a dyn ContextElement>,
blocks: &'a InlinePartialTreeElement<'a>,
blocks: &'a BlockContext<'a>,
) -> Result<String, RenderError> {
match body {
None => Ok("".to_owned()),
@@ -95,7 +99,7 @@ impl<'a> DustRenderer<'a> {
&'a self,
body: &'a Body,
breadcrumbs: &Vec<&'a dyn ContextElement>,
blocks: &'a InlinePartialTreeElement<'a>,
blocks: &'a BlockContext<'a>,
) -> Result<String, RenderError> {
let mut output = String::new();
for elem in &body.elements {
@@ -115,7 +119,7 @@ impl<'a> DustRenderer<'a> {
&'a self,
body: &'a Vec<PartialNameElement>,
breadcrumbs: &Vec<&'a dyn ContextElement>,
blocks: &'a InlinePartialTreeElement<'a>,
blocks: &'a BlockContext<'a>,
) -> Result<String, RenderError> {
let converted_to_template_elements: Vec<TemplateElement<'a>> =
body.into_iter().map(|e| e.into()).collect();
@@ -132,7 +136,7 @@ impl<'a> DustRenderer<'a> {
&'a self,
tag: &'a DustTag,
breadcrumbs: &Vec<&'a dyn ContextElement>,
blocks: &'a InlinePartialTreeElement<'a>,
blocks: &'a BlockContext<'a>,
) -> Result<String, RenderError> {
match tag {
DustTag::DTComment(_comment) => (),
@@ -165,6 +169,7 @@ impl<'a> DustRenderer<'a> {
match val {
Err(WalkError::CantWalk) => {
let new_breadcrumbs = Self::new_breadcrumbs(
breadcrumbs,
breadcrumbs,
None,
&container.explicit_context,
@@ -190,6 +195,7 @@ impl<'a> DustRenderer<'a> {
if loop_elements.is_empty() {
// Scalar value
let new_breadcrumbs = Self::new_breadcrumbs(
breadcrumbs,
breadcrumbs,
None,
&container.explicit_context,
@@ -211,6 +217,7 @@ impl<'a> DustRenderer<'a> {
let injected_context =
IterationContext::new(i, total_length);
let new_breadcrumbs = Self::new_breadcrumbs(
breadcrumbs,
breadcrumbs,
Some(&injected_context),
&container.explicit_context,
@@ -236,6 +243,7 @@ impl<'a> DustRenderer<'a> {
// original context before walking the path as
// the context for rendering the else block
let new_breadcrumbs = Self::new_breadcrumbs(
breadcrumbs,
breadcrumbs,
None,
&container.explicit_context,
@@ -251,8 +259,13 @@ impl<'a> DustRenderer<'a> {
}
}
DustTag::DTExists(container) => {
let new_breadcrumbs =
Self::new_breadcrumbs(breadcrumbs, None, &container.explicit_context, None);
let new_breadcrumbs = Self::new_breadcrumbs(
breadcrumbs,
breadcrumbs,
None,
&container.explicit_context,
None,
);
let val = walk_path(breadcrumbs, &container.path.keys);
return if val.map(|v| v.is_truthy()).unwrap_or(false) {
self.render_maybe_body(
@@ -269,8 +282,13 @@ impl<'a> DustRenderer<'a> {
};
}
DustTag::DTNotExists(container) => {
let new_breadcrumbs =
Self::new_breadcrumbs(breadcrumbs, None, &container.explicit_context, None);
let new_breadcrumbs = Self::new_breadcrumbs(
breadcrumbs,
breadcrumbs,
None,
&container.explicit_context,
None,
);
let val = walk_path(breadcrumbs, &container.path.keys);
return if !val.map(|v| v.is_truthy()).unwrap_or(false) {
self.render_maybe_body(
@@ -289,17 +307,23 @@ impl<'a> DustRenderer<'a> {
DustTag::DTPartial(partial) => {
let partial_name = self.render_partial_name(&partial.name, breadcrumbs, blocks)?;
if partial.params.is_empty() {
let new_breadcrumbs =
Self::new_breadcrumbs(breadcrumbs, None, &partial.explicit_context, None);
let new_breadcrumbs = Self::new_breadcrumbs(
breadcrumbs,
breadcrumbs,
None,
&partial.explicit_context,
None,
);
let rendered_content = self.render_template(
&partial_name,
new_breadcrumbs.as_ref().unwrap_or(breadcrumbs),
Some(blocks),
Some(blocks.blocks),
)?;
return Ok(rendered_content);
} else {
let injected_context = ParametersContext::new(breadcrumbs, &partial.params);
let new_breadcrumbs = Self::new_breadcrumbs(
breadcrumbs,
breadcrumbs,
Some(&injected_context),
&partial.explicit_context,
@@ -308,7 +332,7 @@ impl<'a> DustRenderer<'a> {
let rendered_content = self.render_template(
&partial_name,
new_breadcrumbs.as_ref().unwrap_or(breadcrumbs),
Some(blocks),
Some(blocks.blocks),
)?;
return Ok(rendered_content);
}
@@ -319,13 +343,35 @@ impl<'a> DustRenderer<'a> {
return Ok("".to_owned());
}
DustTag::DTBlock(named_block) => {
return match blocks.get_block(named_block.name) {
None => self.render_maybe_body(&named_block.contents, breadcrumbs, blocks),
Some(interior) => self.render_maybe_body(interior, breadcrumbs, blocks),
let new_breadcrumbs = blocks
.blocks
.get_explicit_context(named_block.name)
.map(|explicit_context| {
Self::new_breadcrumbs(
breadcrumbs,
blocks.breadcrumbs,
None,
explicit_context,
None,
)
})
.flatten();
return match blocks.blocks.get_block(named_block.name) {
None => self.render_maybe_body(
&named_block.contents,
new_breadcrumbs.as_ref().unwrap_or(breadcrumbs),
blocks,
),
Some(interior) => self.render_maybe_body(
interior,
new_breadcrumbs.as_ref().unwrap_or(breadcrumbs),
blocks,
),
};
}
DustTag::DTHelperEquals(parameterized_block) => {
let new_breadcrumbs = Self::new_breadcrumbs(
breadcrumbs,
breadcrumbs,
None,
&parameterized_block.explicit_context,
@@ -376,6 +422,7 @@ impl<'a> DustRenderer<'a> {
}
DustTag::DTHelperNotEquals(parameterized_block) => {
let new_breadcrumbs = Self::new_breadcrumbs(
breadcrumbs,
breadcrumbs,
None,
&parameterized_block.explicit_context,
@@ -425,6 +472,7 @@ impl<'a> DustRenderer<'a> {
}
DustTag::DTHelperGreaterThan(parameterized_block) => {
let new_breadcrumbs = Self::new_breadcrumbs(
breadcrumbs,
breadcrumbs,
None,
&parameterized_block.explicit_context,
@@ -467,6 +515,7 @@ impl<'a> DustRenderer<'a> {
}
DustTag::DTHelperGreaterThanOrEquals(parameterized_block) => {
let new_breadcrumbs = Self::new_breadcrumbs(
breadcrumbs,
breadcrumbs,
None,
&parameterized_block.explicit_context,
@@ -509,6 +558,7 @@ impl<'a> DustRenderer<'a> {
}
DustTag::DTHelperLessThan(parameterized_block) => {
let new_breadcrumbs = Self::new_breadcrumbs(
breadcrumbs,
breadcrumbs,
None,
&parameterized_block.explicit_context,
@@ -551,6 +601,7 @@ impl<'a> DustRenderer<'a> {
}
DustTag::DTHelperLessThanOrEquals(parameterized_block) => {
let new_breadcrumbs = Self::new_breadcrumbs(
breadcrumbs,
breadcrumbs,
None,
&parameterized_block.explicit_context,
@@ -662,6 +713,16 @@ impl<'a> DustRenderer<'a> {
/// This function generates a new breadcrumbs object based on the
/// new context information provided.
///
/// breadcrumbs are the breadcrumbs that will be used in the final
/// breadcrumbs (unless omitted due to an explicit context)
///
/// explicit_context_breadcrumbs are the breadcrumbs used to
/// evaluate an explicit context path. Most of the time the two
/// breadcrumbs parameters will be identical, but for
/// blocks/inline partials the explicit_context_breadcrumbs will
/// be the breadcrumbs from the start of the partial containing
/// the block.
///
/// explicit_context is for contexts specified with a `:path`
/// inside a dust tag.
///
@@ -692,6 +753,7 @@ impl<'a> DustRenderer<'a> {
/// ```
fn new_breadcrumbs<'b>(
breadcrumbs: &'b Vec<&'b dyn ContextElement>,
explicit_context_breadcrumbs: &'b Vec<&'b dyn ContextElement>,
injected_context: Option<&'b dyn ContextElement>,
explicit_context: &Option<Path<'b>>,
new_context_element: Option<&'b dyn ContextElement>,
@@ -721,7 +783,7 @@ impl<'a> DustRenderer<'a> {
}
});
explicit_context.as_ref().map(|path| {
walk_path(breadcrumbs, &path.keys).map(|val| {
walk_path(explicit_context_breadcrumbs, &path.keys).map(|val| {
if val.is_truthy() {
new_stack.push(val)
}
@@ -732,6 +794,12 @@ impl<'a> DustRenderer<'a> {
}
}
struct BlockContext<'a> {
/// The breadcrumbs at the time of entering the current partial
breadcrumbs: &'a Vec<&'a dyn ContextElement>,
blocks: &'a InlinePartialTreeElement<'a>,
}
#[cfg(test)]
mod tests {
use super::*;