aldrin_parser/error/
keyword_as_ident.rs

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use super::Error;
use crate::ast::Ident;
use crate::diag::{Diagnostic, DiagnosticKind, Formatted, Formatter};
use crate::validate::Validate;
use crate::Parsed;

const KEYWORDS: &[&str] = &[
    "import", "struct", "enum", "service", "fn", "event", "const",
];

#[derive(Debug)]
pub struct KeywordAsIdent {
    schema_name: String,
    ident: Ident,
}

impl KeywordAsIdent {
    pub(crate) fn validate(ident: &Ident, validate: &mut Validate) {
        if !KEYWORDS.contains(&ident.value()) {
            return;
        }

        validate.add_error(Self {
            schema_name: validate.schema_name().to_owned(),
            ident: ident.clone(),
        });
    }

    pub fn ident(&self) -> &Ident {
        &self.ident
    }
}

impl Diagnostic for KeywordAsIdent {
    fn kind(&self) -> DiagnosticKind {
        DiagnosticKind::Error
    }

    fn schema_name(&self) -> &str {
        &self.schema_name
    }

    fn format<'a>(&'a self, parsed: &'a Parsed) -> Formatted<'a> {
        let mut fmt = Formatter::new(
            self,
            format!(
                "expected identifier, found keyword `{}`",
                self.ident.value()
            ),
        );

        if let Some(schema) = parsed.get_schema(&self.schema_name) {
            fmt.main_block(schema, self.ident.span().from, self.ident.span(), "");
        }

        fmt.format()
    }
}

impl From<KeywordAsIdent> for Error {
    fn from(e: KeywordAsIdent) -> Self {
        Self::KeywordAsIdent(e)
    }
}