2020-04-10 20:27:27 -04:00
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use crate::parser::template;
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2020-05-31 21:18:54 -04:00
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use crate::parser::Body;
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use crate::parser::DustTag;
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use crate::parser::Filter;
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use crate::parser::KVPair;
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use crate::parser::PartialNameElement;
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use crate::parser::Path;
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use crate::parser::RValue;
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use crate::parser::Special;
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2020-04-10 20:27:27 -04:00
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use crate::parser::Template;
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use crate::parser::TemplateElement;
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use crate::renderer::breadcrumb_tree::BreadcrumbTreeElement;
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use crate::renderer::context_element::ContextElement;
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use crate::renderer::context_element::IntoContextElement;
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use crate::renderer::context_element::Walkable;
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use crate::renderer::errors::CompileError;
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use crate::renderer::errors::RenderError;
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use crate::renderer::errors::WalkError;
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use crate::renderer::inline_partial_tree::extract_inline_partials;
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use crate::renderer::inline_partial_tree::InlinePartialTreeElement;
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use crate::renderer::iteration_context::IterationContext;
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use crate::renderer::parameters_context::ParametersContext;
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use crate::renderer::tree_walking::walk_path;
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use std::borrow::Borrow;
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use std::collections::HashMap;
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use std::rc::Rc;
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2020-04-10 20:27:27 -04:00
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2020-04-10 20:55:44 -04:00
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#[derive(Clone, Debug)]
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pub struct DustRenderer<'a> {
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templates: HashMap<String, &'a Template<'a>>,
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}
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2020-05-31 19:01:51 -04:00
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pub fn compile_template<'a>(source: &'a str) -> Result<Template<'a>, CompileError> {
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let (_remaining, parsed_template) = template(source).map_err(|err| CompileError {
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message: "Failed to compile template".to_owned(),
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})?;
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Ok(parsed_template)
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}
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impl<'a> DustRenderer<'a> {
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pub fn new() -> DustRenderer<'a> {
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DustRenderer {
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templates: HashMap::new(),
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}
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}
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2020-05-31 19:01:51 -04:00
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pub fn load_source(&mut self, template: &'a Template, name: String) {
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self.templates.insert(name, template);
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}
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pub fn render<C>(&'a self, name: &str, context: Option<&C>) -> Result<String, RenderError>
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where
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C: IntoContextElement,
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{
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let breadcrumbs = context
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.map(|ctx| vec![BreadcrumbTreeElement::from_borrowed(ctx)])
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.unwrap_or(Vec::new());
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self.render_template(name, breadcrumbs.as_ref(), None)
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}
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pub fn render_template(
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&'a self,
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name: &str,
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breadcrumbs: &'a Vec<BreadcrumbTreeElement<'a>>,
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blocks: Option<&'a InlinePartialTreeElement<'a>>,
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) -> Result<String, RenderError> {
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let main_template = match self.templates.get(name) {
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Some(tmpl) => tmpl,
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None => {
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return Err(RenderError::TemplateNotFound(name.to_owned()));
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}
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};
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let extracted_inline_partials = extract_inline_partials(main_template);
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let new_blocks = InlinePartialTreeElement::new(blocks, extracted_inline_partials);
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let new_block_context = BlockContext {
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breadcrumbs: breadcrumbs,
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blocks: &new_blocks,
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};
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self.render_body(&main_template.contents, breadcrumbs, &new_block_context)
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}
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fn render_maybe_body(
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&'a self,
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body: &'a Option<Body>,
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breadcrumbs: &'a Vec<BreadcrumbTreeElement<'a>>,
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blocks: &'a BlockContext<'a>,
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) -> Result<String, RenderError> {
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match body {
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None => Ok("".to_owned()),
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Some(body) => Ok(self.render_body(body, breadcrumbs, blocks)?),
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}
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}
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fn render_body(
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&'a self,
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body: &'a Body,
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breadcrumbs: &'a Vec<BreadcrumbTreeElement<'a>>,
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blocks: &'a BlockContext<'a>,
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) -> Result<String, RenderError> {
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let mut output = String::new();
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for elem in &body.elements {
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match elem {
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TemplateElement::TEIgnoredWhitespace(_) => {}
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TemplateElement::TESpan(span) => output.push_str(span.contents),
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TemplateElement::TETag(dt) => {
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output.push_str(&self.render_tag(dt, breadcrumbs, blocks)?);
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}
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}
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}
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Ok(output)
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}
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/// For rendering a dynamic partial's name or an rvalue template
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pub fn render_partial_name(
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&'a self,
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body: &'a Vec<PartialNameElement>,
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breadcrumbs: &'a Vec<BreadcrumbTreeElement<'a>>,
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) -> Result<String, RenderError> {
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let converted_to_template_elements: Vec<TemplateElement<'a>> =
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body.into_iter().map(|e| e.into()).collect();
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// Simple templates like partial names and reference rvalues
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// cannot contain blocks or inline partials, so we use a blank
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// BlockContext.
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let empty_block_context = BlockContext {
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breadcrumbs: &Vec::new(),
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blocks: &InlinePartialTreeElement::new(None, HashMap::new()),
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};
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self.render_body(
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&Body {
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elements: converted_to_template_elements,
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},
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breadcrumbs,
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&empty_block_context,
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)
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}
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fn render_tag(
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&'a self,
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tag: &'a DustTag,
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breadcrumbs: &'a Vec<BreadcrumbTreeElement<'a>>,
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blocks: &'a BlockContext<'a>,
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) -> Result<String, RenderError> {
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match tag {
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DustTag::DTComment(_comment) => (),
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DustTag::DTSpecial(special) => {
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return Ok(match special {
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Special::Space => " ",
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Special::NewLine => "\n",
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Special::CarriageReturn => "\r",
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Special::LeftCurlyBrace => "{",
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Special::RightCurlyBrace => "}",
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}
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.to_owned())
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}
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DustTag::DTLiteralStringBlock(literal) => return Ok((*literal).to_owned()),
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DustTag::DTReference(reference) => {
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let val = walk_path(breadcrumbs, &reference.path.keys)
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.map(|ice| ice.into_context_element(self, breadcrumbs));
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match val {
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2020-05-31 22:17:58 -04:00
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Err(WalkError::CantWalk) | Ok(None) => return Ok("".to_owned()),
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Ok(Some(final_val)) => {
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2020-05-31 23:47:20 -04:00
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return if final_val.get_context_element_reference().is_truthy() {
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final_val
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.get_context_element_reference()
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.render(&Self::preprocess_filters(&reference.filters))
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} else {
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Ok("".to_owned())
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};
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}
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}
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}
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2020-05-31 21:30:36 -04:00
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DustTag::DTSection(container) => {
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let injected_context = ParametersContext::new(self, breadcrumbs, &container.params);
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2020-05-31 21:30:36 -04:00
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let val = walk_path(breadcrumbs, &container.path.keys)
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.map(|ice| ice.into_context_element(self, breadcrumbs));
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match val {
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2020-06-06 23:08:21 -04:00
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Err(WalkError::CantWalk) | Ok(None) => {
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2020-06-06 20:48:29 -04:00
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let new_breadcrumbs = self.new_breadcrumbs_section(
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breadcrumbs,
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None,
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Some(&injected_context),
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&container.explicit_context,
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None,
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);
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2020-06-06 23:08:21 -04:00
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return self.render_maybe_body(
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&container.else_contents,
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new_breadcrumbs.as_ref().unwrap_or(breadcrumbs),
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blocks,
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);
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}
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Ok(Some(final_val)) => {
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let context_element = final_val.get_context_element_reference();
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return if context_element.is_truthy() {
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match &container.contents {
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None => Ok("".to_owned()),
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Some(body) => {
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let loop_elements: Vec<&dyn ContextElement> =
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context_element.get_loop_elements();
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if loop_elements.is_empty() {
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// Scalar value
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let new_breadcrumbs = self.new_breadcrumbs_section(
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breadcrumbs,
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None,
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Some(&injected_context),
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&container.explicit_context,
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Some(context_element),
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);
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self.render_body(
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body,
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new_breadcrumbs.as_ref().unwrap_or(breadcrumbs),
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blocks,
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)
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} else {
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// Array-like value
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let total_length = loop_elements.len();
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let rendered_results: Result<Vec<String>, RenderError> =
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loop_elements
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.into_iter()
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.enumerate()
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.map(|(i, array_elem)| {
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let index_context =
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IterationContext::new(i, total_length);
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let new_breadcrumbs = self
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.new_breadcrumbs_section(
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breadcrumbs,
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Some(&index_context),
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Some(&injected_context),
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&container.explicit_context,
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Some(array_elem),
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);
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self.render_body(
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&body,
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new_breadcrumbs
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.as_ref()
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.unwrap_or(breadcrumbs),
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blocks,
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)
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})
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.collect();
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let rendered_slice: &[String] = &rendered_results?;
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return Ok(rendered_slice.join(""));
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}
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}
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}
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} else {
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// Oddly enough if the value is falsey (like
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// an empty array or null), Dust uses the
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// original context before walking the path as
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// the context for rendering the else block
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let new_breadcrumbs = self.new_breadcrumbs_section(
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breadcrumbs,
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None,
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Some(&injected_context),
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&container.explicit_context,
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None,
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);
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self.render_maybe_body(
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&container.else_contents,
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new_breadcrumbs.as_ref().unwrap_or(breadcrumbs),
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blocks,
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)
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};
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2020-05-31 21:30:36 -04:00
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}
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}
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}
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2020-06-06 23:15:12 -04:00
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DustTag::DTExists(container) => {
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let new_breadcrumbs = self.new_breadcrumbs_partial(
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breadcrumbs,
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breadcrumbs,
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None,
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&container.explicit_context,
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);
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let val = walk_path(breadcrumbs, &container.path.keys)
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.map(|ice| ice.into_context_element(self, breadcrumbs));
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return match val {
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Ok(Some(v)) if v.get_context_element_reference().is_truthy() => self
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.render_maybe_body(
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&container.contents,
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new_breadcrumbs.as_ref().unwrap_or(breadcrumbs),
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blocks,
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),
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_ => self.render_maybe_body(
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&container.else_contents,
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new_breadcrumbs.as_ref().unwrap_or(breadcrumbs),
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blocks,
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),
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};
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}
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DustTag::DTNotExists(container) => {
|
|
|
|
|
let new_breadcrumbs = self.new_breadcrumbs_partial(
|
|
|
|
|
breadcrumbs,
|
|
|
|
|
breadcrumbs,
|
|
|
|
|
None,
|
|
|
|
|
&container.explicit_context,
|
|
|
|
|
);
|
|
|
|
|
let val = walk_path(breadcrumbs, &container.path.keys)
|
|
|
|
|
.map(|ice| ice.into_context_element(self, breadcrumbs));
|
|
|
|
|
return match val {
|
|
|
|
|
Ok(Some(v)) if v.get_context_element_reference().is_truthy() => self
|
|
|
|
|
.render_maybe_body(
|
|
|
|
|
&container.else_contents,
|
|
|
|
|
new_breadcrumbs.as_ref().unwrap_or(breadcrumbs),
|
|
|
|
|
blocks,
|
|
|
|
|
),
|
|
|
|
|
_ => self.render_maybe_body(
|
|
|
|
|
&container.contents,
|
|
|
|
|
new_breadcrumbs.as_ref().unwrap_or(breadcrumbs),
|
|
|
|
|
blocks,
|
|
|
|
|
),
|
|
|
|
|
};
|
|
|
|
|
}
|
2020-06-06 23:17:50 -04:00
|
|
|
DustTag::DTPartial(partial) => {
|
|
|
|
|
let partial_name = self.render_partial_name(&partial.name, breadcrumbs)?;
|
|
|
|
|
if partial.params.is_empty() {
|
|
|
|
|
let new_breadcrumbs = self.new_breadcrumbs_partial(
|
|
|
|
|
breadcrumbs,
|
|
|
|
|
breadcrumbs,
|
|
|
|
|
None,
|
|
|
|
|
&partial.explicit_context,
|
|
|
|
|
);
|
|
|
|
|
let rendered_content = self.render_template(
|
|
|
|
|
&partial_name,
|
|
|
|
|
new_breadcrumbs.as_ref().unwrap_or(breadcrumbs),
|
|
|
|
|
Some(blocks.blocks),
|
|
|
|
|
)?;
|
|
|
|
|
return Ok(rendered_content);
|
|
|
|
|
} else {
|
|
|
|
|
let injected_context =
|
|
|
|
|
ParametersContext::new(self, breadcrumbs, &partial.params);
|
|
|
|
|
let new_breadcrumbs = self.new_breadcrumbs_partial(
|
|
|
|
|
breadcrumbs,
|
|
|
|
|
breadcrumbs,
|
|
|
|
|
Some(&injected_context),
|
|
|
|
|
&partial.explicit_context,
|
|
|
|
|
);
|
|
|
|
|
let rendered_content = self.render_template(
|
|
|
|
|
&partial_name,
|
|
|
|
|
new_breadcrumbs.as_ref().unwrap_or(breadcrumbs),
|
|
|
|
|
Some(blocks.blocks),
|
|
|
|
|
)?;
|
|
|
|
|
return Ok(rendered_content);
|
|
|
|
|
}
|
|
|
|
|
}
|
2020-06-06 23:18:28 -04:00
|
|
|
DustTag::DTInlinePartial(_named_block) => {
|
|
|
|
|
// Inline partials are blank during rendering (they get injected into blocks)
|
|
|
|
|
return Ok("".to_owned());
|
|
|
|
|
}
|
|
|
|
|
DustTag::DTBlock(named_block) => {
|
|
|
|
|
let new_breadcrumbs = self.new_breadcrumbs_partial(
|
|
|
|
|
breadcrumbs,
|
|
|
|
|
blocks.breadcrumbs,
|
|
|
|
|
None,
|
|
|
|
|
&named_block.explicit_context,
|
|
|
|
|
);
|
|
|
|
|
return match blocks.blocks.get_block(named_block.path.keys[0]) {
|
|
|
|
|
None => self.render_maybe_body(
|
|
|
|
|
&named_block.contents,
|
|
|
|
|
new_breadcrumbs.as_ref().unwrap_or(breadcrumbs),
|
|
|
|
|
blocks,
|
|
|
|
|
),
|
|
|
|
|
Some(inline_partial) => self.render_maybe_body(
|
|
|
|
|
inline_partial,
|
|
|
|
|
new_breadcrumbs.as_ref().unwrap_or(breadcrumbs),
|
|
|
|
|
blocks,
|
|
|
|
|
),
|
|
|
|
|
};
|
|
|
|
|
}
|
2020-06-07 00:03:51 -04:00
|
|
|
DustTag::DTHelperEquals(parameterized_block) => {
|
|
|
|
|
let new_breadcrumbs = self.new_breadcrumbs_partial(
|
|
|
|
|
breadcrumbs,
|
|
|
|
|
breadcrumbs,
|
|
|
|
|
None,
|
|
|
|
|
¶meterized_block.explicit_context,
|
|
|
|
|
);
|
|
|
|
|
|
|
|
|
|
let param_map =
|
|
|
|
|
ParametersContext::new(self, breadcrumbs, ¶meterized_block.params);
|
|
|
|
|
|
|
|
|
|
// Special case: when comparing two RVPaths, if the
|
|
|
|
|
// path is equal then dust assumes the values are
|
|
|
|
|
// equal (otherwise, non-scalar values are
|
|
|
|
|
// automatically not equal)
|
|
|
|
|
if Self::are_paths_identical(¶m_map, "key", "value") {
|
|
|
|
|
return match ¶meterized_block.contents {
|
|
|
|
|
None => Ok("".to_owned()),
|
|
|
|
|
Some(body) => {
|
|
|
|
|
let rendered_content = self.render_body(
|
|
|
|
|
body,
|
|
|
|
|
new_breadcrumbs.as_ref().unwrap_or(breadcrumbs),
|
|
|
|
|
blocks,
|
|
|
|
|
)?;
|
|
|
|
|
Ok(rendered_content)
|
|
|
|
|
}
|
|
|
|
|
};
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
let left_side = match param_map
|
|
|
|
|
.walk("key")
|
|
|
|
|
.map(|ice| ice.into_context_element(self, breadcrumbs))
|
|
|
|
|
{
|
|
|
|
|
Err(WalkError::CantWalk) | Ok(None) => return Ok("".to_owned()),
|
|
|
|
|
Ok(Some(res)) => res,
|
|
|
|
|
};
|
|
|
|
|
let right_side = param_map
|
|
|
|
|
.walk("value")
|
|
|
|
|
.map(|ice| ice.into_context_element(self, breadcrumbs));
|
|
|
|
|
if Ok(Some(left_side.get_context_element_reference()))
|
|
|
|
|
== right_side.as_ref().map(|maybe_ice| {
|
|
|
|
|
maybe_ice
|
|
|
|
|
.as_ref()
|
|
|
|
|
.map(|ice| ice.get_context_element_reference())
|
|
|
|
|
})
|
|
|
|
|
{
|
|
|
|
|
return self.render_maybe_body(
|
|
|
|
|
¶meterized_block.contents,
|
|
|
|
|
new_breadcrumbs.as_ref().unwrap_or(breadcrumbs),
|
|
|
|
|
blocks,
|
|
|
|
|
);
|
|
|
|
|
} else {
|
|
|
|
|
return self.render_maybe_body(
|
|
|
|
|
¶meterized_block.else_contents,
|
|
|
|
|
new_breadcrumbs.as_ref().unwrap_or(breadcrumbs),
|
|
|
|
|
blocks,
|
|
|
|
|
);
|
|
|
|
|
}
|
|
|
|
|
}
|
|
|
|
|
DustTag::DTHelperNotEquals(parameterized_block) => {
|
|
|
|
|
let new_breadcrumbs = self.new_breadcrumbs_partial(
|
|
|
|
|
breadcrumbs,
|
|
|
|
|
breadcrumbs,
|
|
|
|
|
None,
|
|
|
|
|
¶meterized_block.explicit_context,
|
|
|
|
|
);
|
|
|
|
|
|
|
|
|
|
let param_map =
|
|
|
|
|
ParametersContext::new(self, breadcrumbs, ¶meterized_block.params);
|
|
|
|
|
|
|
|
|
|
// Special case: when comparing two RVPaths, if the
|
|
|
|
|
// path is equal then dust assumes the values are
|
|
|
|
|
// equal (otherwise, non-scalar values are
|
|
|
|
|
// automatically not equal)
|
|
|
|
|
if Self::are_paths_identical(¶m_map, "key", "value") {
|
|
|
|
|
return match ¶meterized_block.else_contents {
|
|
|
|
|
None => Ok("".to_owned()),
|
|
|
|
|
Some(body) => {
|
|
|
|
|
let rendered_content = self.render_body(
|
|
|
|
|
body,
|
|
|
|
|
new_breadcrumbs.as_ref().unwrap_or(breadcrumbs),
|
|
|
|
|
blocks,
|
|
|
|
|
)?;
|
|
|
|
|
Ok(rendered_content)
|
|
|
|
|
}
|
|
|
|
|
};
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
let left_side = match param_map
|
|
|
|
|
.walk("key")
|
|
|
|
|
.map(|ice| ice.into_context_element(self, breadcrumbs))
|
|
|
|
|
{
|
|
|
|
|
Err(WalkError::CantWalk) | Ok(None) => return Ok("".to_owned()),
|
|
|
|
|
Ok(Some(res)) => res,
|
|
|
|
|
};
|
|
|
|
|
let right_side = param_map
|
|
|
|
|
.walk("value")
|
|
|
|
|
.map(|ice| ice.into_context_element(self, breadcrumbs));
|
|
|
|
|
if Ok(Some(left_side.get_context_element_reference()))
|
|
|
|
|
!= right_side.as_ref().map(|maybe_ice| {
|
|
|
|
|
maybe_ice
|
|
|
|
|
.as_ref()
|
|
|
|
|
.map(|ice| ice.get_context_element_reference())
|
|
|
|
|
})
|
|
|
|
|
{
|
|
|
|
|
return self.render_maybe_body(
|
|
|
|
|
¶meterized_block.contents,
|
|
|
|
|
new_breadcrumbs.as_ref().unwrap_or(breadcrumbs),
|
|
|
|
|
blocks,
|
|
|
|
|
);
|
|
|
|
|
} else {
|
|
|
|
|
return self.render_maybe_body(
|
|
|
|
|
¶meterized_block.else_contents,
|
|
|
|
|
new_breadcrumbs.as_ref().unwrap_or(breadcrumbs),
|
|
|
|
|
blocks,
|
|
|
|
|
);
|
|
|
|
|
}
|
|
|
|
|
}
|
2020-06-07 00:12:01 -04:00
|
|
|
DustTag::DTHelperGreaterThan(parameterized_block) => {
|
|
|
|
|
let new_breadcrumbs = self.new_breadcrumbs_partial(
|
|
|
|
|
breadcrumbs,
|
|
|
|
|
breadcrumbs,
|
|
|
|
|
None,
|
|
|
|
|
¶meterized_block.explicit_context,
|
|
|
|
|
);
|
|
|
|
|
|
|
|
|
|
let param_map =
|
|
|
|
|
ParametersContext::new(self, breadcrumbs, ¶meterized_block.params);
|
|
|
|
|
let left_side = match param_map
|
|
|
|
|
.walk("key")
|
|
|
|
|
.map(|ice| ice.into_context_element(self, breadcrumbs))
|
|
|
|
|
{
|
|
|
|
|
Err(WalkError::CantWalk) | Ok(None) => return Ok("".to_owned()),
|
|
|
|
|
Ok(Some(res)) => res,
|
|
|
|
|
};
|
|
|
|
|
let right_side = param_map
|
|
|
|
|
.walk("value")
|
|
|
|
|
.map(|ice| ice.into_context_element(self, breadcrumbs));
|
|
|
|
|
match (right_side) {
|
|
|
|
|
Ok(Some(right_side_unwrapped)) => {
|
|
|
|
|
if left_side.get_context_element_reference()
|
|
|
|
|
> right_side_unwrapped.get_context_element_reference()
|
|
|
|
|
{
|
|
|
|
|
return self.render_maybe_body(
|
|
|
|
|
¶meterized_block.contents,
|
|
|
|
|
new_breadcrumbs.as_ref().unwrap_or(breadcrumbs),
|
|
|
|
|
blocks,
|
|
|
|
|
);
|
|
|
|
|
} else {
|
|
|
|
|
return self.render_maybe_body(
|
|
|
|
|
¶meterized_block.else_contents,
|
|
|
|
|
new_breadcrumbs.as_ref().unwrap_or(breadcrumbs),
|
|
|
|
|
blocks,
|
|
|
|
|
);
|
|
|
|
|
}
|
|
|
|
|
}
|
|
|
|
|
_ => {
|
|
|
|
|
return self.render_maybe_body(
|
|
|
|
|
¶meterized_block.else_contents,
|
|
|
|
|
new_breadcrumbs.as_ref().unwrap_or(breadcrumbs),
|
|
|
|
|
blocks,
|
|
|
|
|
)
|
|
|
|
|
}
|
|
|
|
|
}
|
|
|
|
|
}
|
|
|
|
|
DustTag::DTHelperGreaterThanOrEquals(parameterized_block) => {
|
|
|
|
|
let new_breadcrumbs = self.new_breadcrumbs_partial(
|
|
|
|
|
breadcrumbs,
|
|
|
|
|
breadcrumbs,
|
|
|
|
|
None,
|
|
|
|
|
¶meterized_block.explicit_context,
|
|
|
|
|
);
|
|
|
|
|
|
|
|
|
|
let param_map =
|
|
|
|
|
ParametersContext::new(self, breadcrumbs, ¶meterized_block.params);
|
|
|
|
|
let left_side = match param_map
|
|
|
|
|
.walk("key")
|
|
|
|
|
.map(|ice| ice.into_context_element(self, breadcrumbs))
|
|
|
|
|
{
|
|
|
|
|
Err(WalkError::CantWalk) | Ok(None) => return Ok("".to_owned()),
|
|
|
|
|
Ok(Some(res)) => res,
|
|
|
|
|
};
|
|
|
|
|
let right_side = param_map
|
|
|
|
|
.walk("value")
|
|
|
|
|
.map(|ice| ice.into_context_element(self, breadcrumbs));
|
|
|
|
|
match (right_side) {
|
|
|
|
|
Ok(Some(right_side_unwrapped)) => {
|
|
|
|
|
if left_side.get_context_element_reference()
|
|
|
|
|
>= right_side_unwrapped.get_context_element_reference()
|
|
|
|
|
{
|
|
|
|
|
return self.render_maybe_body(
|
|
|
|
|
¶meterized_block.contents,
|
|
|
|
|
new_breadcrumbs.as_ref().unwrap_or(breadcrumbs),
|
|
|
|
|
blocks,
|
|
|
|
|
);
|
|
|
|
|
} else {
|
|
|
|
|
return self.render_maybe_body(
|
|
|
|
|
¶meterized_block.else_contents,
|
|
|
|
|
new_breadcrumbs.as_ref().unwrap_or(breadcrumbs),
|
|
|
|
|
blocks,
|
|
|
|
|
);
|
|
|
|
|
}
|
|
|
|
|
}
|
|
|
|
|
_ => {
|
|
|
|
|
return self.render_maybe_body(
|
|
|
|
|
¶meterized_block.else_contents,
|
|
|
|
|
new_breadcrumbs.as_ref().unwrap_or(breadcrumbs),
|
|
|
|
|
blocks,
|
|
|
|
|
)
|
|
|
|
|
}
|
|
|
|
|
}
|
|
|
|
|
}
|
|
|
|
|
DustTag::DTHelperLessThan(parameterized_block) => {
|
|
|
|
|
let new_breadcrumbs = self.new_breadcrumbs_partial(
|
|
|
|
|
breadcrumbs,
|
|
|
|
|
breadcrumbs,
|
|
|
|
|
None,
|
|
|
|
|
¶meterized_block.explicit_context,
|
|
|
|
|
);
|
|
|
|
|
|
|
|
|
|
let param_map =
|
|
|
|
|
ParametersContext::new(self, breadcrumbs, ¶meterized_block.params);
|
|
|
|
|
let left_side = match param_map
|
|
|
|
|
.walk("key")
|
|
|
|
|
.map(|ice| ice.into_context_element(self, breadcrumbs))
|
|
|
|
|
{
|
|
|
|
|
Err(WalkError::CantWalk) | Ok(None) => return Ok("".to_owned()),
|
|
|
|
|
Ok(Some(res)) => res,
|
|
|
|
|
};
|
|
|
|
|
let right_side = param_map
|
|
|
|
|
.walk("value")
|
|
|
|
|
.map(|ice| ice.into_context_element(self, breadcrumbs));
|
|
|
|
|
match (right_side) {
|
|
|
|
|
Ok(Some(right_side_unwrapped)) => {
|
|
|
|
|
if left_side.get_context_element_reference()
|
|
|
|
|
< right_side_unwrapped.get_context_element_reference()
|
|
|
|
|
{
|
|
|
|
|
return self.render_maybe_body(
|
|
|
|
|
¶meterized_block.contents,
|
|
|
|
|
new_breadcrumbs.as_ref().unwrap_or(breadcrumbs),
|
|
|
|
|
blocks,
|
|
|
|
|
);
|
|
|
|
|
} else {
|
|
|
|
|
return self.render_maybe_body(
|
|
|
|
|
¶meterized_block.else_contents,
|
|
|
|
|
new_breadcrumbs.as_ref().unwrap_or(breadcrumbs),
|
|
|
|
|
blocks,
|
|
|
|
|
);
|
|
|
|
|
}
|
|
|
|
|
}
|
|
|
|
|
_ => {
|
|
|
|
|
return self.render_maybe_body(
|
|
|
|
|
¶meterized_block.else_contents,
|
|
|
|
|
new_breadcrumbs.as_ref().unwrap_or(breadcrumbs),
|
|
|
|
|
blocks,
|
|
|
|
|
)
|
|
|
|
|
}
|
|
|
|
|
}
|
|
|
|
|
}
|
|
|
|
|
DustTag::DTHelperLessThanOrEquals(parameterized_block) => {
|
|
|
|
|
let new_breadcrumbs = self.new_breadcrumbs_partial(
|
|
|
|
|
breadcrumbs,
|
|
|
|
|
breadcrumbs,
|
|
|
|
|
None,
|
|
|
|
|
¶meterized_block.explicit_context,
|
|
|
|
|
);
|
|
|
|
|
|
|
|
|
|
let param_map =
|
|
|
|
|
ParametersContext::new(self, breadcrumbs, ¶meterized_block.params);
|
|
|
|
|
let left_side = match param_map
|
|
|
|
|
.walk("key")
|
|
|
|
|
.map(|ice| ice.into_context_element(self, breadcrumbs))
|
|
|
|
|
{
|
|
|
|
|
Err(WalkError::CantWalk) | Ok(None) => return Ok("".to_owned()),
|
|
|
|
|
Ok(Some(res)) => res,
|
|
|
|
|
};
|
|
|
|
|
let right_side = param_map
|
|
|
|
|
.walk("value")
|
|
|
|
|
.map(|ice| ice.into_context_element(self, breadcrumbs));
|
|
|
|
|
match (right_side) {
|
|
|
|
|
Ok(Some(right_side_unwrapped)) => {
|
|
|
|
|
if left_side.get_context_element_reference()
|
|
|
|
|
<= right_side_unwrapped.get_context_element_reference()
|
|
|
|
|
{
|
|
|
|
|
return self.render_maybe_body(
|
|
|
|
|
¶meterized_block.contents,
|
|
|
|
|
new_breadcrumbs.as_ref().unwrap_or(breadcrumbs),
|
|
|
|
|
blocks,
|
|
|
|
|
);
|
|
|
|
|
} else {
|
|
|
|
|
return self.render_maybe_body(
|
|
|
|
|
¶meterized_block.else_contents,
|
|
|
|
|
new_breadcrumbs.as_ref().unwrap_or(breadcrumbs),
|
|
|
|
|
blocks,
|
|
|
|
|
);
|
|
|
|
|
}
|
|
|
|
|
}
|
|
|
|
|
_ => {
|
|
|
|
|
return self.render_maybe_body(
|
|
|
|
|
¶meterized_block.else_contents,
|
|
|
|
|
new_breadcrumbs.as_ref().unwrap_or(breadcrumbs),
|
|
|
|
|
blocks,
|
|
|
|
|
)
|
|
|
|
|
}
|
|
|
|
|
}
|
|
|
|
|
}
|
2020-05-31 21:18:54 -04:00
|
|
|
_ => panic!("Unsupported tag"),
|
|
|
|
|
}
|
2020-06-07 00:12:01 -04:00
|
|
|
|
2020-05-31 21:18:54 -04:00
|
|
|
Ok("".to_owned())
|
|
|
|
|
}
|
|
|
|
|
|
2020-05-25 22:50:10 -04:00
|
|
|
fn new_breadcrumbs_section<'b>(
|
2020-05-31 21:18:54 -04:00
|
|
|
&'b self,
|
2020-06-06 22:37:29 -04:00
|
|
|
breadcrumbs: &'b Vec<BreadcrumbTreeElement<'b>>,
|
2020-05-30 17:50:27 -04:00
|
|
|
index_context: Option<&'b dyn IntoContextElement>,
|
|
|
|
|
injected_context: Option<&'b dyn IntoContextElement>,
|
2020-05-25 22:50:10 -04:00
|
|
|
explicit_context: &Option<Path<'b>>,
|
|
|
|
|
new_context_element: Option<&'b dyn ContextElement>,
|
2020-06-06 22:37:29 -04:00
|
|
|
) -> Option<Vec<BreadcrumbTreeElement<'b>>> {
|
2020-05-25 22:50:10 -04:00
|
|
|
// If none of the additional contexts are present, return None
|
|
|
|
|
// to signal that the original breadcrumbs should be used
|
|
|
|
|
// rather than incurring a copy here.
|
|
|
|
|
match (
|
|
|
|
|
index_context,
|
|
|
|
|
injected_context,
|
|
|
|
|
explicit_context,
|
|
|
|
|
new_context_element,
|
|
|
|
|
) {
|
|
|
|
|
(None, None, None, None) => return None,
|
|
|
|
|
_ => (),
|
|
|
|
|
}
|
|
|
|
|
|
2020-05-31 18:18:21 -04:00
|
|
|
// If there is an explicit context, then drop all the current
|
|
|
|
|
// context
|
2020-06-06 22:37:29 -04:00
|
|
|
let mut new_stack = match explicit_context {
|
|
|
|
|
Some(_) => Vec::with_capacity(4),
|
|
|
|
|
None => breadcrumbs.clone(),
|
2020-05-25 22:50:10 -04:00
|
|
|
};
|
2020-05-31 18:18:21 -04:00
|
|
|
|
2020-06-06 17:52:46 -04:00
|
|
|
explicit_context.as_ref().map(|path| {
|
2020-06-06 22:37:29 -04:00
|
|
|
walk_path(breadcrumbs, &path.keys)
|
|
|
|
|
.map(|ice| ice.into_context_element(self, breadcrumbs))
|
2020-05-31 22:17:58 -04:00
|
|
|
.ok()
|
|
|
|
|
.flatten()
|
2020-05-31 18:27:55 -04:00
|
|
|
.map(|val| {
|
2020-05-31 23:47:20 -04:00
|
|
|
if val.get_context_element_reference().is_truthy() {
|
2020-06-06 22:37:29 -04:00
|
|
|
new_stack.push(std::convert::From::from(val))
|
2020-05-31 18:27:55 -04:00
|
|
|
}
|
|
|
|
|
});
|
2020-06-06 17:52:46 -04:00
|
|
|
});
|
2020-06-06 22:37:29 -04:00
|
|
|
injected_context.map(|ctx| new_stack.push(BreadcrumbTreeElement::from_borrowed(ctx)));
|
2020-06-06 20:24:01 -04:00
|
|
|
new_context_element.map(|ctx| {
|
2020-06-06 22:37:29 -04:00
|
|
|
new_stack.push(BreadcrumbTreeElement::from_borrowed(
|
2020-06-06 20:24:01 -04:00
|
|
|
ctx.from_context_element(),
|
|
|
|
|
))
|
|
|
|
|
});
|
2020-06-06 22:37:29 -04:00
|
|
|
index_context.map(|ctx| new_stack.push(BreadcrumbTreeElement::from_borrowed(ctx)));
|
2020-05-31 18:18:21 -04:00
|
|
|
|
2020-06-06 22:37:29 -04:00
|
|
|
Some(new_stack)
|
2020-05-05 20:22:25 -04:00
|
|
|
}
|
2020-05-31 20:41:27 -04:00
|
|
|
|
|
|
|
|
fn new_breadcrumbs_partial<'b>(
|
2020-05-31 20:43:07 -04:00
|
|
|
&'b self,
|
2020-06-06 22:45:58 -04:00
|
|
|
breadcrumbs: &'b Vec<BreadcrumbTreeElement<'b>>,
|
|
|
|
|
explicit_context_breadcrumbs: &'a Vec<BreadcrumbTreeElement<'a>>,
|
2020-05-31 20:41:27 -04:00
|
|
|
injected_context: Option<&'b dyn IntoContextElement>,
|
|
|
|
|
explicit_context: &Option<Path<'b>>,
|
2020-06-06 22:45:58 -04:00
|
|
|
) -> Option<Vec<BreadcrumbTreeElement<'b>>> {
|
2020-05-31 20:41:27 -04:00
|
|
|
// If none of the additional contexts are present, return None
|
|
|
|
|
// to signal that the original breadcrumbs should be used
|
|
|
|
|
// rather than incurring a copy here.
|
|
|
|
|
match (injected_context, explicit_context) {
|
|
|
|
|
(None, None) => return None,
|
|
|
|
|
_ => (),
|
|
|
|
|
};
|
|
|
|
|
|
|
|
|
|
// If there is an explicit context, then drop all the current
|
|
|
|
|
// context
|
2020-06-06 22:45:58 -04:00
|
|
|
let mut new_stack = match explicit_context {
|
|
|
|
|
Some(_) => Vec::with_capacity(3),
|
|
|
|
|
None => breadcrumbs.clone(),
|
2020-05-31 20:41:27 -04:00
|
|
|
};
|
|
|
|
|
|
|
|
|
|
injected_context.map(|ctx| {
|
|
|
|
|
// Special case: when there is no explicit context, the
|
|
|
|
|
// injected context gets inserted 1 spot behind the
|
|
|
|
|
// current context. Otherwise, the injected context gets
|
|
|
|
|
// added after the current context but before the explicit
|
|
|
|
|
// context.
|
|
|
|
|
match explicit_context {
|
2020-06-06 23:08:21 -04:00
|
|
|
None => new_stack.insert(
|
|
|
|
|
Self::get_index_of_first_non_pseudo_element(&new_stack).unwrap_or(0),
|
|
|
|
|
BreadcrumbTreeElement::from_borrowed(ctx),
|
|
|
|
|
),
|
|
|
|
|
_ => new_stack.push(BreadcrumbTreeElement::from_borrowed(ctx)),
|
2020-05-31 20:41:27 -04:00
|
|
|
}
|
|
|
|
|
});
|
2020-06-06 22:45:58 -04:00
|
|
|
|
2020-06-06 17:52:46 -04:00
|
|
|
explicit_context.as_ref().map(|path| {
|
2020-05-31 20:41:27 -04:00
|
|
|
// TODO: should resolving the value here use
|
|
|
|
|
// explicit_context_maybe_breadcrumbs or
|
|
|
|
|
// maybe_breadcrumbs?
|
2020-06-06 22:45:58 -04:00
|
|
|
walk_path(explicit_context_breadcrumbs, &path.keys)
|
|
|
|
|
.map(|ice| ice.into_context_element(self, breadcrumbs))
|
2020-05-31 22:17:58 -04:00
|
|
|
.ok()
|
|
|
|
|
.flatten()
|
2020-05-31 20:41:27 -04:00
|
|
|
.map(|val| {
|
2020-06-06 15:20:43 -04:00
|
|
|
if val.get_context_element_reference().is_truthy() {
|
2020-06-06 22:45:58 -04:00
|
|
|
new_stack.push(std::convert::From::from(val));
|
2020-05-31 20:41:27 -04:00
|
|
|
}
|
|
|
|
|
});
|
2020-06-06 17:52:46 -04:00
|
|
|
});
|
2020-05-31 20:41:27 -04:00
|
|
|
|
2020-06-06 22:45:58 -04:00
|
|
|
Some(new_stack)
|
2020-05-31 20:41:27 -04:00
|
|
|
}
|
2020-05-31 21:26:31 -04:00
|
|
|
|
2020-06-07 00:03:51 -04:00
|
|
|
fn are_paths_identical<'b>(
|
|
|
|
|
param_map: &ParametersContext<'b>,
|
|
|
|
|
left_key: &str,
|
|
|
|
|
right_key: &str,
|
|
|
|
|
) -> bool {
|
|
|
|
|
match (
|
|
|
|
|
param_map.get_original_rvalue(left_key),
|
|
|
|
|
param_map.get_original_rvalue(right_key),
|
|
|
|
|
) {
|
|
|
|
|
(None, _) => false,
|
|
|
|
|
(_, None) => false,
|
|
|
|
|
(Some(key_rval), Some(value_rval)) => match (key_rval, value_rval) {
|
|
|
|
|
(RValue::RVPath(key_path), RValue::RVPath(value_path)) => {
|
|
|
|
|
key_path.keys == value_path.keys
|
|
|
|
|
}
|
|
|
|
|
_ => false,
|
|
|
|
|
},
|
|
|
|
|
}
|
|
|
|
|
}
|
|
|
|
|
|
2020-05-31 21:26:31 -04:00
|
|
|
fn preprocess_filters(filters: &Vec<Filter>) -> Vec<Filter> {
|
|
|
|
|
let mut final_filters: Vec<Filter> = filters
|
|
|
|
|
.into_iter()
|
|
|
|
|
.filter(|f| f != &&Filter::DisableHtmlEncode)
|
|
|
|
|
.map(|f| f.clone())
|
|
|
|
|
.collect();
|
|
|
|
|
|
|
|
|
|
// If the user has not specified any escaping filter (|s or
|
|
|
|
|
// |h), automatically add an html escape filter
|
|
|
|
|
if !filters.iter().any(|f| f == &Filter::DisableHtmlEncode) {
|
|
|
|
|
final_filters.push(Filter::HtmlEncode);
|
|
|
|
|
}
|
|
|
|
|
final_filters
|
|
|
|
|
}
|
2020-06-06 22:45:58 -04:00
|
|
|
|
2020-06-06 23:08:21 -04:00
|
|
|
fn get_index_of_first_non_pseudo_element<'b>(
|
|
|
|
|
breadcrumbs: &'b Vec<BreadcrumbTreeElement<'b>>,
|
|
|
|
|
) -> Option<usize> {
|
|
|
|
|
breadcrumbs.iter().rposition(|b| {
|
2020-06-07 00:37:47 -04:00
|
|
|
!std::borrow::Borrow::<dyn IntoContextElement + 'b>::borrow(b).is_pseudo_element()
|
2020-06-06 23:08:21 -04:00
|
|
|
})
|
2020-06-06 22:45:58 -04:00
|
|
|
}
|
2020-04-11 20:31:44 -04:00
|
|
|
}
|
2020-05-31 21:18:54 -04:00
|
|
|
|
|
|
|
|
struct BlockContext<'a> {
|
|
|
|
|
/// The breadcrumbs at the time of entering the current partial
|
2020-06-06 22:24:27 -04:00
|
|
|
breadcrumbs: &'a Vec<BreadcrumbTreeElement<'a>>,
|
2020-05-31 21:18:54 -04:00
|
|
|
blocks: &'a InlinePartialTreeElement<'a>,
|
|
|
|
|
}
|
