ochna 0.3.2

A structural code graph indexing and analysis CLI using Tree-sitter and SQLite
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//! Unresolved-reference storage and specifier-based lookups for re-resolution.

use super::{split_callee_name, UnresolvedRef};
use rusqlite::Connection;

/// Insert an unresolved reference (a call whose target symbol is not indexed).
pub fn insert_unresolved_ref(conn: &Connection, r: &UnresolvedRef) -> rusqlite::Result<()> {
    conn.execute(
        "INSERT INTO unresolved_refs (source_nid, specifier, kind, line, column)
         SELECT nid, ?2, ?3, ?4, ?5 FROM nodes WHERE id = ?1",
        (&r.source_id, &r.specifier, &r.kind, r.line, r.column),
    )?;
    Ok(())
}

pub fn delete_unresolved_refs_for_source_id(
    conn: &Connection,
    source_id: &str,
) -> rusqlite::Result<()> {
    conn.execute(
        "DELETE FROM unresolved_refs WHERE source_nid = (SELECT nid FROM nodes WHERE id = ?)",
        [source_id],
    )?;
    Ok(())
}

pub fn get_unresolved_source_ids_by_specifier_simple(
    conn: &Connection,
    specifier_simple: &str,
) -> rusqlite::Result<Vec<String>> {
    let like_pattern = format!("%::{}", specifier_simple);
    let mut stmt = conn.prepare(
        "SELECT DISTINCT n.id, u.specifier FROM unresolved_refs u
         JOIN nodes n ON n.nid = u.source_nid
         WHERE u.specifier = ? OR u.specifier LIKE ?",
    )?;
    let rows = stmt.query_map([specifier_simple, &like_pattern], |row| {
        Ok((row.get::<_, String>(0)?, row.get::<_, String>(1)?))
    })?;
    let mut source_ids = Vec::new();
    for row in rows {
        let (source_id, specifier) = row?;
        if split_callee_name(&specifier).1 == specifier_simple {
            source_ids.push(source_id);
        }
    }
    source_ids.sort();
    source_ids.dedup();
    Ok(source_ids)
}

/// Classify an unresolved endpoint without discarding a framework-qualified
/// declaration. An unrelated method sharing the final name does not make a
/// missing `grpc::Service::method` endpoint ambiguous.
pub fn unresolved_reason(
    conn: &Connection,
    specifier: &str,
    kind: &str,
) -> rusqlite::Result<String> {
    if matches!(kind, "macro_or_function" | "indirect_call") {
        return Ok(kind.to_string());
    }
    let framework_qualified = kind != "calls" && specifier.contains("::");
    let candidates: i64 = if framework_qualified {
        conn.query_row(
            "SELECT COUNT(*) FROM nodes WHERE qualified_name = ?1",
            [specifier],
            |row| row.get(0),
        )?
    } else {
        let simple = specifier.rsplit("::").next().unwrap_or(specifier);
        conn.query_row(
            "SELECT COUNT(*) FROM nodes WHERE name = ?1",
            [simple],
            |row| row.get(0),
        )?
    };
    Ok(if candidates > 0 {
        "ambiguous_target".to_string()
    } else {
        "missing_target".to_string()
    })
}