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use base_db::{Document, DocumentData, Workspace};
use rowan::{ast::AstNode, TextRange};
use syntax::bibtex::{self, HasDelims, HasEq, HasName, HasType, HasValue};
use crate::{
types::{BibError, DiagnosticData},
util::SimpleDiagnosticSource,
Diagnostic, DiagnosticBuilder, DiagnosticSource,
};
#[derive(Default)]
pub struct BibSyntaxErrors(SimpleDiagnosticSource);
impl DiagnosticSource for BibSyntaxErrors {
fn update(&mut self, _workspace: &Workspace, document: &Document) {
let mut analyzer = Analyzer {
document,
diagnostics: Vec::new(),
};
analyzer.analyze_root();
self.0
.errors
.insert(document.uri.clone(), analyzer.diagnostics);
}
fn publish<'db>(
&'db mut self,
workspace: &'db Workspace,
builder: &mut DiagnosticBuilder<'db>,
) {
self.0.publish(workspace, builder);
}
}
struct Analyzer<'a> {
document: &'a Document,
diagnostics: Vec<Diagnostic>,
}
impl<'a> Analyzer<'a> {
fn analyze_root(&mut self) {
let DocumentData::Bib(data) = &self.document.data else { return };
for node in bibtex::SyntaxNode::new_root(data.green.clone()).descendants() {
if let Some(entry) = bibtex::Entry::cast(node.clone()) {
self.analyze_entry(entry);
} else if let Some(field) = bibtex::Field::cast(node.clone()) {
self.analyze_field(field);
}
}
}
fn analyze_entry(&mut self, entry: bibtex::Entry) {
if entry.left_delim_token().is_none() {
let offset = entry.type_token().unwrap().text_range().end();
self.diagnostics.push(Diagnostic {
range: TextRange::empty(offset),
data: DiagnosticData::Bib(BibError::ExpectingLCurly),
});
return;
}
if entry.name_token().is_none() {
let offset = entry.left_delim_token().unwrap().text_range().end();
self.diagnostics.push(Diagnostic {
range: TextRange::empty(offset),
data: DiagnosticData::Bib(BibError::ExpectingKey),
});
return;
}
if entry.right_delim_token().is_none() {
let offset = entry.syntax().text_range().end();
self.diagnostics.push(Diagnostic {
range: TextRange::empty(offset),
data: DiagnosticData::Bib(BibError::ExpectingRCurly),
});
}
}
fn analyze_field(&mut self, field: bibtex::Field) {
if field.eq_token().is_none() {
let offset = field.name_token().unwrap().text_range().end();
self.diagnostics.push(Diagnostic {
range: TextRange::empty(offset),
data: DiagnosticData::Bib(BibError::ExpectingEq),
});
return;
}
if field.value().is_none() {
let offset = field.eq_token().unwrap().text_range().end();
self.diagnostics.push(Diagnostic {
range: TextRange::empty(offset),
data: DiagnosticData::Bib(BibError::ExpectingFieldValue),
});
}
}
}
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