just-lsp 0.2.8

A language server for just
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use super::*;

/// Reports expressions that reference variables or parameters which are not
/// defined and aren’t builtins.
pub struct UndefinedIdentifierRule;

impl Rule for UndefinedIdentifierRule {
  fn display_name(&self) -> &'static str {
    "Undefined Identifiers"
  }

  fn id(&self) -> &'static str {
    "undefined-identifiers"
  }

  fn run(&self, context: &RuleContext<'_>) -> Vec<lsp::Diagnostic> {
    let mut diagnostics = Vec::new();

    for unresolved in context.unresolved_identifiers() {
      diagnostics.push(self.diagnostic(lsp::Diagnostic {
        range: unresolved.range,
        severity: Some(lsp::DiagnosticSeverity::ERROR),
        message: format!("Variable `{}` not found", unresolved.name),
        ..Default::default()
      }));
    }

    diagnostics
  }
}