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use bibtex_utils::field::text::TextFieldData;
use itertools::Itertools;
use rowan::{ast::AstNode, TextRange};
use syntax::bibtex::{self, HasName, HasType, HasValue};
use rustc_hash::FxHashMap;
use crate::data::{BibtexEntryType, BibtexEntryTypeCategory};
use super::Span;
#[derive(Debug, Clone, Default)]
pub struct Semantics {
pub entries: Vec<Entry>,
pub strings: Vec<StringDef>,
/// Map from string definition keys to their expanded values.
pub expanded_defs: FxHashMap<String, String>,
}
impl Semantics {
pub fn process_root(&mut self, root: &bibtex::SyntaxNode) {
for node in root.children() {
if let Some(entry) = bibtex::Entry::cast(node.clone()) {
self.process_entry(entry);
} else if let Some(string) = bibtex::StringDef::cast(node) {
self.process_string_def(string);
}
}
}
fn process_entry(&mut self, entry: bibtex::Entry) {
if let Some(name) = entry.name_token() {
let type_token = entry.type_token().unwrap();
let category = BibtexEntryType::find(type_token.text())
.map_or(BibtexEntryTypeCategory::Misc, |ty| ty.category);
let field_values = entry
.fields()
.filter_map(|field| Some(TextFieldData::parse(&field.value()?, &self.expanded_defs)?.text));
let keywords = [name.text().into(), type_token.text().into()]
.into_iter()
.chain(field_values)
.join(" ");
self.entries.push(Entry {
name: Span {
range: name.text_range(),
text: name.text().into(),
},
full_range: entry.syntax().text_range(),
category,
keywords,
});
}
}
fn process_string_def(&mut self, string: bibtex::StringDef) {
if let Some(name) = string.name_token() {
self.strings.push(StringDef {
name: Span {
range: name.text_range(),
text: name.text().into(),
},
full_range: string.syntax().text_range(),
});
if let Some(value) = string.value() {
if let Some(data) = TextFieldData::parse(&value, &self.expanded_defs) {
self.expanded_defs.insert(name.text().into(), data.text);
}
}
}
}
}
#[derive(Debug, PartialEq, Eq, Clone)]
pub struct Entry {
pub name: Span,
pub full_range: TextRange,
pub keywords: String,
pub category: BibtexEntryTypeCategory,
}
#[derive(Debug, Clone)]
pub struct StringDef {
pub name: Span,
pub full_range: TextRange,
}
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