use crate::diagnostic::Diagnostic;
use crate::diagnostic_factories::symbol_already_declared;
use crate::diagnostics_result;
use crate::symbol::Symbol;
use crate::symbol_table::SymbolTable;

pub fn try_insert_symbol_into(
    symbol: Symbol,
    symbol_table: &mut SymbolTable,
) -> Result<(), Diagnostic> {
    let maybe_already_inserted = symbol_table.get_symbol(symbol.scope_id(), symbol.declared_name());
    if let Some(already_inserted) = maybe_already_inserted {
        Err(symbol_already_declared(&already_inserted, &symbol))
    } else {
        symbol_table.insert_symbol(symbol);
        Ok(())
    }
}

pub fn try_insert_symbols_into(
    symbols: Vec<Symbol>,
    symbol_table: &mut SymbolTable,
) -> Result<(), Vec<Diagnostic>> {
    let diagnostics: Vec<Diagnostic> = symbols
        .into_iter()
        .map(|symbol| try_insert_symbol_into(symbol, symbol_table))
        .filter_map(Result::err)
        .collect();
    diagnostics_result!(diagnostics)
}