private static IObject EvalBlockStatement(Ast.BlockStatement block, Environment env)
{
IObject result = null;
foreach (var s in block.Statements)
{
result = Eval(s, env);
if (result == null)
{
continue;
}
var rt = result.getType();
if (rt == Type.Return | rt == Type.Error)
{
return(result);
}
}
return(result);
}
private Ast.BlockStatement ParseBlockStatement()
{
var block = new Ast.BlockStatement
{
Token = _curToken,
Statements = new List <Ast.IStatement>()
};
NextToken();
while (!CurTokenIs(TokenType.Rbrace) && !CurTokenIs(TokenType.Eof))
{
var statement = ParseStatement();
if (statement != null)
{
block.Statements.Add(statement);
}
NextToken();
}
return(block);
}